cpython-lru_cache-weakref: Modules/itertoolsmodule.c annotate

annotate Modules/itertoolsmodule.c @ 71583:cdff35544530 2.7

Minor doc addition for clarity

author	Éric Araujo <merwok@netwok.org>
date	Fri, 27 May 2011 04:42:47 +0200
parents	b36cb4602e21
children	5a1cb8506cea

rev	line source
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2 #include "Python.h"
33779 c66e6c9ffc2d some platforms still need offsetof() from structmember.h Fred Drake <fdrake@acm.org> parents: 33777 diff changeset	3 #include "structmember.h"
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	5 /* Itertools module written and maintained
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	6 by Raymond D. Hettinger <python@rcn.com>
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	7 Copyright (c) 2003 Python Software Foundation.
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	8 All rights reserved.
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	9 */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	10
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	11
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	12 /* groupby object ***********************************************************/
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	13
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	14 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	15 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	16 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	17 PyObject *keyfunc;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	18 PyObject *tgtkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	19 PyObject *currkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	20 PyObject *currvalue;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	21 } groupbyobject;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	22
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	23 static PyTypeObject groupby_type;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	24 static PyObject _grouper_create(groupbyobject , PyObject *);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	25
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	26 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	27 groupby_new(PyTypeObject type, PyObject args, PyObject *kwds)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	28 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	29 static char *kwargs[] = {"iterable", "key", NULL};
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	30 groupbyobject *gbo;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	31 PyObject it, keyfunc = Py_None;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	32
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	33 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O\|O:groupby", kwargs,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	34 &it, &keyfunc))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	35 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	36
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	37 gbo = (groupbyobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	38 if (gbo == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	39 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	40 gbo->tgtkey = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	41 gbo->currkey = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	42 gbo->currvalue = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	43 gbo->keyfunc = keyfunc;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	44 Py_INCREF(keyfunc);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	45 gbo->it = PyObject_GetIter(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	46 if (gbo->it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	47 Py_DECREF(gbo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	48 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	49 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	50 return (PyObject *)gbo;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	51 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	52
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	53 static void
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	54 groupby_dealloc(groupbyobject *gbo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	55 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	56 PyObject_GC_UnTrack(gbo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	57 Py_XDECREF(gbo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	58 Py_XDECREF(gbo->keyfunc);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	59 Py_XDECREF(gbo->tgtkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	60 Py_XDECREF(gbo->currkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	61 Py_XDECREF(gbo->currvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	62 Py_TYPE(gbo)->tp_free(gbo);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	63 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	64
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	65 static int
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	66 groupby_traverse(groupbyobject gbo, visitproc visit, void arg)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	67 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	68 Py_VISIT(gbo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	69 Py_VISIT(gbo->keyfunc);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	70 Py_VISIT(gbo->tgtkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	71 Py_VISIT(gbo->currkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	72 Py_VISIT(gbo->currvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	73 return 0;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	74 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	75
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	76 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	77 groupby_next(groupbyobject *gbo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	78 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	79 PyObject newvalue, newkey, r, grouper, *tmp;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	80
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	81 /* skip to next iteration group */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	82 for (;;) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	83 if (gbo->currkey == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	84 /* pass */;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	85 else if (gbo->tgtkey == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	86 break;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	87 else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	88 int rcmp;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	89
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	90 rcmp = PyObject_RichCompareBool(gbo->tgtkey,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	91 gbo->currkey, Py_EQ);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	92 if (rcmp == -1)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	93 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	94 else if (rcmp == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	95 break;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	96 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	97
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	98 newvalue = PyIter_Next(gbo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	99 if (newvalue == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	100 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	101
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	102 if (gbo->keyfunc == Py_None) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	103 newkey = newvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	104 Py_INCREF(newvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	105 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	106 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	107 newvalue, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	108 if (newkey == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	109 Py_DECREF(newvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	110 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	111 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	112 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	113
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	114 tmp = gbo->currkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	115 gbo->currkey = newkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	116 Py_XDECREF(tmp);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	117
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	118 tmp = gbo->currvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	119 gbo->currvalue = newvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	120 Py_XDECREF(tmp);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	121 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	122
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	123 Py_INCREF(gbo->currkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	124 tmp = gbo->tgtkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	125 gbo->tgtkey = gbo->currkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	126 Py_XDECREF(tmp);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	127
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	128 grouper = _grouper_create(gbo, gbo->tgtkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	129 if (grouper == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	130 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	131
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	132 r = PyTuple_Pack(2, gbo->currkey, grouper);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	133 Py_DECREF(grouper);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	134 return r;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	135 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	136
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	137 PyDoc_STRVAR(groupby_doc,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	138 "groupby(iterable[, keyfunc]) -> create an iterator which returns\n\
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	139 (key, sub-iterator) grouped by each value of key(value).\n");
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	140
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	141 static PyTypeObject groupby_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	142 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	143 "itertools.groupby", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	144 sizeof(groupbyobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	145 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	146 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	147 (destructor)groupby_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	148 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	149 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	150 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	151 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	152 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	153 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	154 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	155 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	156 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	157 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	158 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	159 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	160 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	161 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	162 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	163 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	164 groupby_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	165 (traverseproc)groupby_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	166 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	167 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	168 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	169 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	170 (iternextfunc)groupby_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	171 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	172 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	173 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	174 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	175 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	176 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	177 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	178 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	179 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	180 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	181 groupby_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	182 PyObject_GC_Del, /* tp_free */
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	183 };
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	184
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	185
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	186 /* _grouper object (internal) ************************************************/
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	187
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	188 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	189 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	190 PyObject *parent;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	191 PyObject *tgtkey;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	192 } _grouperobject;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	193
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	194 static PyTypeObject _grouper_type;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	195
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	196 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	197 _grouper_create(groupbyobject parent, PyObject tgtkey)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	198 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	199 _grouperobject *igo;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	200
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	201 igo = PyObject_GC_New(_grouperobject, &_grouper_type);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	202 if (igo == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	203 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	204 igo->parent = (PyObject *)parent;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	205 Py_INCREF(parent);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	206 igo->tgtkey = tgtkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	207 Py_INCREF(tgtkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	208
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	209 PyObject_GC_Track(igo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	210 return (PyObject *)igo;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	211 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	212
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	213 static void
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	214 _grouper_dealloc(_grouperobject *igo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	215 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	216 PyObject_GC_UnTrack(igo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	217 Py_DECREF(igo->parent);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	218 Py_DECREF(igo->tgtkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	219 PyObject_GC_Del(igo);
45700 7122fa65697b Backport r61286 adding GC to the grouper for itertools.groupby() fixing Issue 2246. Raymond Hettinger <python@rcn.com> parents: 41637 diff changeset	220 }
7122fa65697b Backport r61286 adding GC to the grouper for itertools.groupby() fixing Issue 2246. Raymond Hettinger <python@rcn.com> parents: 41637 diff changeset	221
7122fa65697b Backport r61286 adding GC to the grouper for itertools.groupby() fixing Issue 2246. Raymond Hettinger <python@rcn.com> parents: 41637 diff changeset	222 static int
7122fa65697b Backport r61286 adding GC to the grouper for itertools.groupby() fixing Issue 2246. Raymond Hettinger <python@rcn.com> parents: 41637 diff changeset	223 _grouper_traverse(_grouperobject igo, visitproc visit, void arg)
7122fa65697b Backport r61286 adding GC to the grouper for itertools.groupby() fixing Issue 2246. Raymond Hettinger <python@rcn.com> parents: 41637 diff changeset	224 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	225 Py_VISIT(igo->parent);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	226 Py_VISIT(igo->tgtkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	227 return 0;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	228 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	229
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	230 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	231 _grouper_next(_grouperobject *igo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	232 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	233 groupbyobject gbo = (groupbyobject )igo->parent;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	234 PyObject newvalue, newkey, *r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	235 int rcmp;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	236
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	237 if (gbo->currvalue == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	238 newvalue = PyIter_Next(gbo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	239 if (newvalue == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	240 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	241
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	242 if (gbo->keyfunc == Py_None) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	243 newkey = newvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	244 Py_INCREF(newvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	245 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	246 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	247 newvalue, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	248 if (newkey == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	249 Py_DECREF(newvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	250 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	251 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	252 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	253
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	254 assert(gbo->currkey == NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	255 gbo->currkey = newkey;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	256 gbo->currvalue = newvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	257 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	258
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	259 assert(gbo->currkey != NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	260 rcmp = PyObject_RichCompareBool(igo->tgtkey, gbo->currkey, Py_EQ);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	261 if (rcmp <= 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	262 /* got any error or current group is end */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	263 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	264
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	265 r = gbo->currvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	266 gbo->currvalue = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	267 Py_CLEAR(gbo->currkey);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	268
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	269 return r;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	270 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	271
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	272 static PyTypeObject _grouper_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	273 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	274 "itertools._grouper", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	275 sizeof(_grouperobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	276 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	277 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	278 (destructor)_grouper_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	279 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	280 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	281 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	282 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	283 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	284 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	285 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	286 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	287 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	288 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	289 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	290 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	291 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	292 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	293 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	294 0, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	295 (traverseproc)_grouper_traverse,/* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	296 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	297 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	298 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	299 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	300 (iternextfunc)_grouper_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	301 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	302 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	303 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	304 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	305 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	306 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	307 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	308 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	309 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	310 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	311 0, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	312 PyObject_GC_Del, /* tp_free */
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	313 };
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	314
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	315
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	316
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	317 /* tee object and with supporting function and objects ***************/
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	318
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	319 /* The teedataobject pre-allocates space for LINKCELLS number of objects.
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	320 To help the object fit neatly inside cache lines (space for 16 to 32
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	321 pointers), the value should be a multiple of 16 minus space for
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	322 the other structure members including PyHEAD overhead. The larger the
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	323 value, the less memory overhead per object and the less time spent
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	324 allocating/deallocating new links. The smaller the number, the less
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	325 wasted space and the more rapid freeing of older data.
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	326 */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	327 #define LINKCELLS 57
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	328
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	329 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	330 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	331 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	332 int numread;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	333 PyObject *nextlink;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	334 PyObject *(values[LINKCELLS]);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	335 } teedataobject;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	336
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	337 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	338 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	339 teedataobject *dataobj;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	340 int index;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	341 PyObject *weakreflist;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	342 } teeobject;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	343
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	344 static PyTypeObject teedataobject_type;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	345
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	346 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	347 teedataobject_new(PyObject *it)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	348 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	349 teedataobject *tdo;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	350
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	351 tdo = PyObject_GC_New(teedataobject, &teedataobject_type);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	352 if (tdo == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	353 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	354
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	355 tdo->numread = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	356 tdo->nextlink = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	357 Py_INCREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	358 tdo->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	359 PyObject_GC_Track(tdo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	360 return (PyObject *)tdo;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	361 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	362
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	363 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	364 teedataobject_jumplink(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	365 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	366 if (tdo->nextlink == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	367 tdo->nextlink = teedataobject_new(tdo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	368 Py_XINCREF(tdo->nextlink);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	369 return tdo->nextlink;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	370 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	371
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	372 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	373 teedataobject_getitem(teedataobject *tdo, int i)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	374 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	375 PyObject *value;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	376
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	377 assert(i < LINKCELLS);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	378 if (i < tdo->numread)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	379 value = tdo->values[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	380 else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	381 /* this is the lead iterator, so fetch more data */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	382 assert(i == tdo->numread);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	383 value = PyIter_Next(tdo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	384 if (value == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	385 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	386 tdo->numread++;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	387 tdo->values[i] = value;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	388 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	389 Py_INCREF(value);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	390 return value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	391 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	392
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	393 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	394 teedataobject_traverse(teedataobject tdo, visitproc visit, void arg)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	395 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	396 int i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	397 Py_VISIT(tdo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	398 for (i = 0; i < tdo->numread; i++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	399 Py_VISIT(tdo->values[i]);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	400 Py_VISIT(tdo->nextlink);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	401 return 0;
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	402 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	403
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	404 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	405 teedataobject_clear(teedataobject *tdo)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	406 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	407 int i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	408 Py_CLEAR(tdo->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	409 for (i=0 ; i<tdo->numread ; i++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	410 Py_CLEAR(tdo->values[i]);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	411 Py_CLEAR(tdo->nextlink);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	412 return 0;
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	413 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	414
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	415 static void
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	416 teedataobject_dealloc(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	417 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	418 PyObject_GC_UnTrack(tdo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	419 teedataobject_clear(tdo);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	420 PyObject_GC_Del(tdo);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	421 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	422
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	423 PyDoc_STRVAR(teedataobject_doc, "Data container common to multiple tee objects.");
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	424
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	425 static PyTypeObject teedataobject_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	426 PyVarObject_HEAD_INIT(0, 0) /* Must fill in type value later */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	427 "itertools.tee_dataobject", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	428 sizeof(teedataobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	429 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	430 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	431 (destructor)teedataobject_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	432 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	433 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	434 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	435 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	436 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	437 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	438 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	439 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	440 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	441 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	442 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	443 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	444 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	445 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	446 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	447 teedataobject_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	448 (traverseproc)teedataobject_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	449 (inquiry)teedataobject_clear, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	450 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	451 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	452 0, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	453 0, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	454 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	455 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	456 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	457 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	458 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	459 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	460 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	461 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	462 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	463 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	464 0, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	465 PyObject_GC_Del, /* tp_free */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	466 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	467
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	468
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	469 static PyTypeObject tee_type;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	470
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	471 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	472 tee_next(teeobject *to)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	473 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	474 PyObject value, link;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	475
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	476 if (to->index >= LINKCELLS) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	477 link = teedataobject_jumplink(to->dataobj);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	478 Py_DECREF(to->dataobj);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	479 to->dataobj = (teedataobject *)link;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	480 to->index = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	481 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	482 value = teedataobject_getitem(to->dataobj, to->index);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	483 if (value == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	484 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	485 to->index++;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	486 return value;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	487 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	488
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	489 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	490 tee_traverse(teeobject to, visitproc visit, void arg)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	491 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	492 Py_VISIT((PyObject *)to->dataobj);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	493 return 0;
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	494 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	495
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	496 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	497 tee_copy(teeobject *to)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	498 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	499 teeobject *newto;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	500
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	501 newto = PyObject_GC_New(teeobject, &tee_type);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	502 if (newto == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	503 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	504 Py_INCREF(to->dataobj);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	505 newto->dataobj = to->dataobj;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	506 newto->index = to->index;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	507 newto->weakreflist = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	508 PyObject_GC_Track(newto);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	509 return (PyObject *)newto;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	510 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	511
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	512 PyDoc_STRVAR(teecopy_doc, "Returns an independent iterator.");
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	513
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	514 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	515 tee_fromiterable(PyObject *iterable)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	516 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	517 teeobject *to;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	518 PyObject *it = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	519
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	520 it = PyObject_GetIter(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	521 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	522 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	523 if (PyObject_TypeCheck(it, &tee_type)) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	524 to = (teeobject )tee_copy((teeobject )it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	525 goto done;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	526 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	527
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	528 to = PyObject_GC_New(teeobject, &tee_type);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	529 if (to == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	530 goto done;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	531 to->dataobj = (teedataobject *)teedataobject_new(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	532 if (!to->dataobj) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	533 PyObject_GC_Del(to);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	534 to = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	535 goto done;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	536 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	537
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	538 to->index = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	539 to->weakreflist = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	540 PyObject_GC_Track(to);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	541 done:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	542 Py_XDECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	543 return (PyObject *)to;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	544 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	545
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	546 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	547 tee_new(PyTypeObject type, PyObject args, PyObject *kw)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	548 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	549 PyObject *iterable;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	550
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	551 if (!PyArg_UnpackTuple(args, "tee", 1, 1, &iterable))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	552 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	553 return tee_fromiterable(iterable);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	554 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	555
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	556 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	557 tee_clear(teeobject *to)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	558 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	559 if (to->weakreflist != NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	560 PyObject_ClearWeakRefs((PyObject *) to);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	561 Py_CLEAR(to->dataobj);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	562 return 0;
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	563 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	564
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	565 static void
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	566 tee_dealloc(teeobject *to)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	567 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	568 PyObject_GC_UnTrack(to);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	569 tee_clear(to);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	570 PyObject_GC_Del(to);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	571 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	572
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	573 PyDoc_STRVAR(teeobject_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	574 "Iterator wrapped to make it copyable");
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	575
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	576 static PyMethodDef tee_methods[] = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	577 {"__copy__", (PyCFunction)tee_copy, METH_NOARGS, teecopy_doc},
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	578 {NULL, NULL} /* sentinel */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	579 };
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	580
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	581 static PyTypeObject tee_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	582 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	583 "itertools.tee", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	584 sizeof(teeobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	585 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	586 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	587 (destructor)tee_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	588 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	589 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	590 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	591 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	592 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	593 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	594 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	595 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	596 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	597 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	598 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	599 0, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	600 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	601 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	602 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	603 teeobject_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	604 (traverseproc)tee_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	605 (inquiry)tee_clear, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	606 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	607 offsetof(teeobject, weakreflist), /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	608 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	609 (iternextfunc)tee_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	610 tee_methods, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	611 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	612 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	613 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	614 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	615 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	616 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	617 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	618 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	619 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	620 tee_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	621 PyObject_GC_Del, /* tp_free */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	622 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	623
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	624 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	625 tee(PyObject self, PyObject args)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	626 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	627 Py_ssize_t i, n=2;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	628 PyObject it, iterable, copyable, result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	629
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	630 if (!PyArg_ParseTuple(args, "O\|n", &iterable, &n))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	631 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	632 if (n < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	633 PyErr_SetString(PyExc_ValueError, "n must be >= 0");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	634 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	635 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	636 result = PyTuple_New(n);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	637 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	638 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	639 if (n == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	640 return result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	641 it = PyObject_GetIter(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	642 if (it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	643 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	644 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	645 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	646 if (!PyObject_HasAttrString(it, "__copy__")) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	647 copyable = tee_fromiterable(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	648 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	649 if (copyable == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	650 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	651 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	652 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	653 } else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	654 copyable = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	655 PyTuple_SET_ITEM(result, 0, copyable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	656 for (i=1 ; i<n ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	657 copyable = PyObject_CallMethod(copyable, "__copy__", NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	658 if (copyable == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	659 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	660 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	661 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	662 PyTuple_SET_ITEM(result, i, copyable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	663 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	664 return result;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	665 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	666
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	667 PyDoc_STRVAR(tee_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	668 "tee(iterable, n=2) --> tuple of n independent iterators.");
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	669
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	670
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	671 /* cycle object **********************************************************/
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	672
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	673 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	674 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	675 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	676 PyObject *saved;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	677 int firstpass;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	678 } cycleobject;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	679
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	680 static PyTypeObject cycle_type;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	681
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	682 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	683 cycle_new(PyTypeObject type, PyObject args, PyObject *kwds)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	684 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	685 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	686 PyObject *iterable;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	687 PyObject *saved;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	688 cycleobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	689
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	690 if (type == &cycle_type && !_PyArg_NoKeywords("cycle()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	691 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	692
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	693 if (!PyArg_UnpackTuple(args, "cycle", 1, 1, &iterable))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	694 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	695
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	696 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	697 it = PyObject_GetIter(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	698 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	699 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	700
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	701 saved = PyList_New(0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	702 if (saved == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	703 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	704 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	705 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	706
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	707 /* create cycleobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	708 lz = (cycleobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	709 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	710 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	711 Py_DECREF(saved);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	712 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	713 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	714 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	715 lz->saved = saved;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	716 lz->firstpass = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	717
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	718 return (PyObject *)lz;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	719 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	720
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	721 static void
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	722 cycle_dealloc(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	723 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	724 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	725 Py_XDECREF(lz->saved);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	726 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	727 Py_TYPE(lz)->tp_free(lz);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	728 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	729
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	730 static int
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	731 cycle_traverse(cycleobject lz, visitproc visit, void arg)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	732 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	733 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	734 Py_VISIT(lz->saved);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	735 return 0;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	736 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	737
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	738 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	739 cycle_next(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	740 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	741 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	742 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	743 PyObject *tmp;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	744
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	745 while (1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	746 item = PyIter_Next(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	747 if (item != NULL) {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	748 if (!lz->firstpass && PyList_Append(lz->saved, item)) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	749 Py_DECREF(item);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	750 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	751 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	752 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	753 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	754 if (PyErr_Occurred()) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	755 if (PyErr_ExceptionMatches(PyExc_StopIteration))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	756 PyErr_Clear();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	757 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	758 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	759 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	760 if (PyList_Size(lz->saved) == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	761 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	762 it = PyObject_GetIter(lz->saved);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	763 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	764 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	765 tmp = lz->it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	766 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	767 lz->firstpass = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	768 Py_DECREF(tmp);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	769 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	770 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	771
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	772 PyDoc_STRVAR(cycle_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	773 "cycle(iterable) --> cycle object\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	774 \n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	775 Return elements from the iterable until it is exhausted.\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	776 Then repeat the sequence indefinitely.");
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	777
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	778 static PyTypeObject cycle_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	779 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	780 "itertools.cycle", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	781 sizeof(cycleobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	782 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	783 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	784 (destructor)cycle_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	785 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	786 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	787 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	788 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	789 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	790 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	791 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	792 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	793 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	794 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	795 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	796 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	797 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	798 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	799 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	800 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	801 cycle_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	802 (traverseproc)cycle_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	803 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	804 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	805 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	806 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	807 (iternextfunc)cycle_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	808 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	809 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	810 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	811 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	812 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	813 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	814 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	815 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	816 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	817 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	818 cycle_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	819 PyObject_GC_Del, /* tp_free */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	820 };
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	821
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	822
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	823 /* dropwhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	824
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	825 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	826 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	827 PyObject *func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	828 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	829 long start;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	830 } dropwhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	831
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	832 static PyTypeObject dropwhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	833
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	834 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	835 dropwhile_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	836 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	837 PyObject func, seq;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	838 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	839 dropwhileobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	840
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	841 if (type == &dropwhile_type && !_PyArg_NoKeywords("dropwhile()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	842 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	843
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	844 if (!PyArg_UnpackTuple(args, "dropwhile", 2, 2, &func, &seq))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	845 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	846
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	847 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	848 it = PyObject_GetIter(seq);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	849 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	850 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	851
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	852 /* create dropwhileobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	853 lz = (dropwhileobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	854 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	855 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	856 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	857 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	858 Py_INCREF(func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	859 lz->func = func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	860 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	861 lz->start = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	862
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	863 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	864 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	865
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	866 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	867 dropwhile_dealloc(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	868 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	869 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	870 Py_XDECREF(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	871 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	872 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	873 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	874
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	875 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	876 dropwhile_traverse(dropwhileobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	877 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	878 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	879 Py_VISIT(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	880 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	881 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	882
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	883 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	884 dropwhile_next(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	885 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	886 PyObject item, good;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	887 PyObject *it = lz->it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	888 long ok;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	889 PyObject (iternext)(PyObject *);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	890
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	891 iternext = *Py_TYPE(it)->tp_iternext;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	892 for (;;) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	893 item = iternext(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	894 if (item == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	895 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	896 if (lz->start == 1)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	897 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	898
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	899 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	900 if (good == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	901 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	902 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	903 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	904 ok = PyObject_IsTrue(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	905 Py_DECREF(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	906 if (!ok) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	907 lz->start = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	908 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	909 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	910 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	911 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	912 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	913
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	914 PyDoc_STRVAR(dropwhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	915 "dropwhile(predicate, iterable) --> dropwhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	916 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	917 Drop items from the iterable while predicate(item) is true.\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	918 Afterwards, return every element until the iterable is exhausted.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	919
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	920 static PyTypeObject dropwhile_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	921 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	922 "itertools.dropwhile", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	923 sizeof(dropwhileobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	924 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	925 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	926 (destructor)dropwhile_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	927 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	928 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	929 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	930 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	931 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	932 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	933 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	934 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	935 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	936 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	937 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	938 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	939 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	940 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	941 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	942 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	943 dropwhile_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	944 (traverseproc)dropwhile_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	945 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	946 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	947 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	948 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	949 (iternextfunc)dropwhile_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	950 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	951 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	952 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	953 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	954 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	955 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	956 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	957 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	958 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	959 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	960 dropwhile_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	961 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	962 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	963
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	964
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	965 /* takewhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	966
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	967 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	968 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	969 PyObject *func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	970 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	971 long stop;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	972 } takewhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	973
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	974 static PyTypeObject takewhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	975
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	976 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	977 takewhile_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	978 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	979 PyObject func, seq;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	980 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	981 takewhileobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	982
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	983 if (type == &takewhile_type && !_PyArg_NoKeywords("takewhile()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	984 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	985
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	986 if (!PyArg_UnpackTuple(args, "takewhile", 2, 2, &func, &seq))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	987 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	988
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	989 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	990 it = PyObject_GetIter(seq);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	991 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	992 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	993
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	994 /* create takewhileobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	995 lz = (takewhileobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	996 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	997 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	998 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	999 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1000 Py_INCREF(func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1001 lz->func = func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1002 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1003 lz->stop = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1004
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1005 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1006 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1007
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1008 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1009 takewhile_dealloc(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1010 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1011 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1012 Py_XDECREF(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1013 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1014 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1015 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1016
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1017 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1018 takewhile_traverse(takewhileobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1019 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1020 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1021 Py_VISIT(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1022 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1023 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1024
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1025 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1026 takewhile_next(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1027 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1028 PyObject item, good;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1029 PyObject *it = lz->it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1030 long ok;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1031
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1032 if (lz->stop == 1)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1033 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1034
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1035 item = (*Py_TYPE(it)->tp_iternext)(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1036 if (item == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1037 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1038
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1039 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1040 if (good == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1041 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1042 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1043 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1044 ok = PyObject_IsTrue(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1045 Py_DECREF(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1046 if (ok)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1047 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1048 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1049 lz->stop = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1050 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1051 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1052
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1053 PyDoc_STRVAR(takewhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1054 "takewhile(predicate, iterable) --> takewhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1055 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1056 Return successive entries from an iterable as long as the \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1057 predicate evaluates to true for each entry.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1058
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1059 static PyTypeObject takewhile_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1060 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1061 "itertools.takewhile", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1062 sizeof(takewhileobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1063 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1064 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1065 (destructor)takewhile_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1066 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1067 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1068 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1069 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1070 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1071 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1072 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1073 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1074 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1075 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1076 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1077 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1078 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1079 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1080 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1081 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1082 takewhile_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1083 (traverseproc)takewhile_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1084 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1085 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1086 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1087 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1088 (iternextfunc)takewhile_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1089 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1090 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1091 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1092 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1093 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1094 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1095 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1096 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1097 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1098 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1099 takewhile_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1100 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1101 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1102
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1103
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1104 /* islice object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1105
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1106 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1107 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1108 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1109 Py_ssize_t next;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1110 Py_ssize_t stop;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1111 Py_ssize_t step;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1112 Py_ssize_t cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1113 } isliceobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1114
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1115 static PyTypeObject islice_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1116
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1117 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1118 islice_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1119 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1120 PyObject *seq;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1121 Py_ssize_t start=0, stop=-1, step=1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1122 PyObject it, a1=NULL, a2=NULL, a3=NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1123 Py_ssize_t numargs;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1124 isliceobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1125
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1126 if (type == &islice_type && !_PyArg_NoKeywords("islice()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1127 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1128
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1129 if (!PyArg_UnpackTuple(args, "islice", 2, 4, &seq, &a1, &a2, &a3))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1130 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1131
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1132 numargs = PyTuple_Size(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1133 if (numargs == 2) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1134 if (a1 != Py_None) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1135 stop = PyInt_AsSsize_t(a1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1136 if (stop == -1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1137 if (PyErr_Occurred())
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1138 PyErr_Clear();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1139 PyErr_SetString(PyExc_ValueError,
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	1140 "Stop argument for islice() must be None or an integer: 0 <= x <= maxint.");
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1141 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1142 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1143 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1144 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1145 if (a1 != Py_None)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1146 start = PyInt_AsSsize_t(a1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1147 if (start == -1 && PyErr_Occurred())
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1148 PyErr_Clear();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1149 if (a2 != Py_None) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1150 stop = PyInt_AsSsize_t(a2);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1151 if (stop == -1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1152 if (PyErr_Occurred())
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1153 PyErr_Clear();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1154 PyErr_SetString(PyExc_ValueError,
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	1155 "Stop argument for islice() must be None or an integer: 0 <= x <= maxint.");
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1156 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1157 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1158 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1159 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1160 if (start<0 \|\| stop<-1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1161 PyErr_SetString(PyExc_ValueError,
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	1162 "Indices for islice() must be None or an integer: 0 <= x <= maxint.");
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1163 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1164 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1165
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1166 if (a3 != NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1167 if (a3 != Py_None)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1168 step = PyInt_AsSsize_t(a3);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1169 if (step == -1 && PyErr_Occurred())
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1170 PyErr_Clear();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1171 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1172 if (step<1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1173 PyErr_SetString(PyExc_ValueError,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1174 "Step for islice() must be a positive integer or None.");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1175 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1176 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1177
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1178 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1179 it = PyObject_GetIter(seq);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1180 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1181 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1182
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1183 /* create isliceobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1184 lz = (isliceobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1185 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1186 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1187 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1188 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1189 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1190 lz->next = start;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1191 lz->stop = stop;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1192 lz->step = step;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1193 lz->cnt = 0L;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1194
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1195 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1196 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1197
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1198 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1199 islice_dealloc(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1200 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1201 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1202 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1203 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1204 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1205
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1206 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1207 islice_traverse(isliceobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1208 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1209 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1210 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1211 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1212
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1213 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1214 islice_next(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1215 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1216 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1217 PyObject *it = lz->it;
66549 ed4bfb75d28d Issue #10323: Predictable final state for slice(). Raymond Hettinger <python@rcn.com> parents: 62237 diff changeset	1218 Py_ssize_t stop = lz->stop;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1219 Py_ssize_t oldnext;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1220 PyObject (iternext)(PyObject *);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1221
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1222 iternext = *Py_TYPE(it)->tp_iternext;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1223 while (lz->cnt < lz->next) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1224 item = iternext(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1225 if (item == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1226 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1227 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1228 lz->cnt++;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1229 }
66549 ed4bfb75d28d Issue #10323: Predictable final state for slice(). Raymond Hettinger <python@rcn.com> parents: 62237 diff changeset	1230 if (stop != -1 && lz->cnt >= stop)
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1231 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1232 item = iternext(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1233 if (item == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1234 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1235 lz->cnt++;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1236 oldnext = lz->next;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1237 lz->next += lz->step;
66549 ed4bfb75d28d Issue #10323: Predictable final state for slice(). Raymond Hettinger <python@rcn.com> parents: 62237 diff changeset	1238 if (lz->next < oldnext \|\| (stop != -1 && lz->next > stop))
ed4bfb75d28d Issue #10323: Predictable final state for slice(). Raymond Hettinger <python@rcn.com> parents: 62237 diff changeset	1239 lz->next = stop;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1240 return item;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1241 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1242
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1243 PyDoc_STRVAR(islice_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1244 "islice(iterable, [start,] stop [, step]) --> islice object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1245 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1246 Return an iterator whose next() method returns selected values from an\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1247 iterable. If start is specified, will skip all preceding elements;\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1248 otherwise, start defaults to zero. Step defaults to one. If\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1249 specified as another value, step determines how many values are \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1250 skipped between successive calls. Works like a slice() on a list\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1251 but returns an iterator.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1252
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1253 static PyTypeObject islice_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1254 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1255 "itertools.islice", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1256 sizeof(isliceobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1257 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1258 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1259 (destructor)islice_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1260 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1261 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1262 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1263 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1264 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1265 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1266 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1267 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1268 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1269 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1270 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1271 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1272 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1273 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1274 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1275 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1276 islice_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1277 (traverseproc)islice_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1278 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1279 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1280 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1281 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1282 (iternextfunc)islice_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1283 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1284 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1285 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1286 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1287 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1288 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1289 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1290 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1291 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1292 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1293 islice_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1294 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1295 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1296
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1297
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1298 /* starmap object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1299
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1300 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1301 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1302 PyObject *func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1303 PyObject *it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1304 } starmapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1305
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1306 static PyTypeObject starmap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1307
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1308 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1309 starmap_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1310 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1311 PyObject func, seq;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1312 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1313 starmapobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1314
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1315 if (type == &starmap_type && !_PyArg_NoKeywords("starmap()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1316 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1317
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1318 if (!PyArg_UnpackTuple(args, "starmap", 2, 2, &func, &seq))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1319 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1320
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1321 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1322 it = PyObject_GetIter(seq);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1323 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1324 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1325
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1326 /* create starmapobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1327 lz = (starmapobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1328 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1329 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1330 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1331 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1332 Py_INCREF(func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1333 lz->func = func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1334 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1335
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1336 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1337 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1338
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1339 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1340 starmap_dealloc(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1341 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1342 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1343 Py_XDECREF(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1344 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1345 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1346 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1347
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1348 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1349 starmap_traverse(starmapobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1350 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1351 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1352 Py_VISIT(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1353 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1354 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1355
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1356 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1357 starmap_next(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1358 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1359 PyObject *args;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1360 PyObject *result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1361 PyObject *it = lz->it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1362
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1363 args = (*Py_TYPE(it)->tp_iternext)(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1364 if (args == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1365 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1366 if (!PyTuple_CheckExact(args)) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1367 PyObject *newargs = PySequence_Tuple(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1368 Py_DECREF(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1369 if (newargs == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1370 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1371 args = newargs;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1372 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1373 result = PyObject_Call(lz->func, args, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1374 Py_DECREF(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1375 return result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1376 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1377
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1378 PyDoc_STRVAR(starmap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1379 "starmap(function, sequence) --> starmap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1380 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1381 Return an iterator whose values are returned from the function evaluated\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1382 with a argument tuple taken from the given sequence.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1383
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1384 static PyTypeObject starmap_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1385 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1386 "itertools.starmap", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1387 sizeof(starmapobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1388 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1389 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1390 (destructor)starmap_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1391 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1392 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1393 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1394 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1395 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1396 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1397 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1398 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1399 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1400 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1401 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1402 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1403 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1404 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1405 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1406 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1407 starmap_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1408 (traverseproc)starmap_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1409 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1410 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1411 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1412 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1413 (iternextfunc)starmap_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1414 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1415 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1416 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1417 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1418 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1419 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1420 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1421 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1422 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1423 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1424 starmap_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1425 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1426 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1427
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1428
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1429 /* imap object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1430
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1431 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1432 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1433 PyObject *iters;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1434 PyObject *func;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1435 } imapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1436
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1437 static PyTypeObject imap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1438
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1439 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1440 imap_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1441 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1442 PyObject it, iters, *func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1443 imapobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1444 Py_ssize_t numargs, i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1445
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1446 if (type == &imap_type && !_PyArg_NoKeywords("imap()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1447 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1448
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1449 numargs = PyTuple_Size(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1450 if (numargs < 2) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1451 PyErr_SetString(PyExc_TypeError,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1452 "imap() must have at least two arguments.");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1453 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1454 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1455
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1456 iters = PyTuple_New(numargs-1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1457 if (iters == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1458 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1459
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1460 for (i=1 ; i<numargs ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1461 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1462 it = PyObject_GetIter(PyTuple_GET_ITEM(args, i));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1463 if (it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1464 Py_DECREF(iters);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1465 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1466 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1467 PyTuple_SET_ITEM(iters, i-1, it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1468 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1469
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1470 /* create imapobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1471 lz = (imapobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1472 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1473 Py_DECREF(iters);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1474 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1475 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1476 lz->iters = iters;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1477 func = PyTuple_GET_ITEM(args, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1478 Py_INCREF(func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1479 lz->func = func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1480
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1481 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1482 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1483
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1484 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1485 imap_dealloc(imapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1486 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1487 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1488 Py_XDECREF(lz->iters);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1489 Py_XDECREF(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1490 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1491 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1492
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1493 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1494 imap_traverse(imapobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1495 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1496 Py_VISIT(lz->iters);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1497 Py_VISIT(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1498 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1499 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1500
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1501 /*
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1502 imap() is an iterator version of __builtins__.map() except that it does
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1503 not have the None fill-in feature. That was intentionally left out for
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1504 the following reasons:
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1505
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1506 1) Itertools are designed to be easily combined and chained together.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1507 Having all tools stop with the shortest input is a unifying principle
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1508 that makes it easier to combine finite iterators (supplying data) with
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1509 infinite iterators like count() and repeat() (for supplying sequential
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1510 or constant arguments to a function).
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1511
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1512 2) In typical use cases for combining itertools, having one finite data
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1513 supplier run out before another is likely to be an error condition which
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1514 should not pass silently by automatically supplying None.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1515
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1516 3) The use cases for automatic None fill-in are rare -- not many functions
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1517 do something useful when a parameter suddenly switches type and becomes
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1518 None.
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1519
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1520 4) If a need does arise, it can be met by __builtins__.map() or by
29535 c64687cd5b37 Minor updates: Raymond Hettinger <python@rcn.com> parents: 29522 diff changeset	1521 writing: chain(iterable, repeat(None)).
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1522
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1523 5) Similar toolsets in Haskell and SML do not have automatic None fill-in.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1524 */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1525
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1526 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1527 imap_next(imapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1528 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1529 PyObject *val;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1530 PyObject *argtuple;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1531 PyObject *result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1532 Py_ssize_t numargs, i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1533
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1534 numargs = PyTuple_Size(lz->iters);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1535 argtuple = PyTuple_New(numargs);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1536 if (argtuple == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1537 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1538
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1539 for (i=0 ; i<numargs ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1540 val = PyIter_Next(PyTuple_GET_ITEM(lz->iters, i));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1541 if (val == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1542 Py_DECREF(argtuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1543 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1544 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1545 PyTuple_SET_ITEM(argtuple, i, val);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1546 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1547 if (lz->func == Py_None)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1548 return argtuple;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1549 result = PyObject_Call(lz->func, argtuple, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1550 Py_DECREF(argtuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1551 return result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1552 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1553
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1554 PyDoc_STRVAR(imap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1555 "imap(func, *iterables) --> imap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1556 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1557 Make an iterator that computes the function using arguments from\n\
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1558 each of the iterables. Like map() except that it returns\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1559 an iterator instead of a list and that it stops when the shortest\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1560 iterable is exhausted instead of filling in None for shorter\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1561 iterables.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1562
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1563 static PyTypeObject imap_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1564 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1565 "itertools.imap", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1566 sizeof(imapobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1567 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1568 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1569 (destructor)imap_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1570 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1571 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1572 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1573 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1574 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1575 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1576 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1577 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1578 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1579 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1580 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1581 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1582 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1583 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1584 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1585 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1586 imap_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1587 (traverseproc)imap_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1588 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1589 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1590 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1591 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1592 (iternextfunc)imap_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1593 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1594 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1595 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1596 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1597 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1598 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1599 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1600 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1601 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1602 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1603 imap_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1604 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1605 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1606
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1607
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1608 /* chain object ************************************************************/
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1609
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1610 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1611 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1612 PyObject source; / Iterator over input iterables */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1613 PyObject active; / Currently running input iterator */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1614 } chainobject;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1615
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1616 static PyTypeObject chain_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1617
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1618 static PyObject *
45562 43e084847e53 Have itertools.chain() consume its inputs lazily instead of building a tuple of iterators at the outset. Raymond Hettinger <python@rcn.com> parents: 45547 diff changeset	1619 chain_new_internal(PyTypeObject type, PyObject source)
43e084847e53 Have itertools.chain() consume its inputs lazily instead of building a tuple of iterators at the outset. Raymond Hettinger <python@rcn.com> parents: 45547 diff changeset	1620 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1621 chainobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1622
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1623 lz = (chainobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1624 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1625 Py_DECREF(source);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1626 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1627 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1628
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1629 lz->source = source;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1630 lz->active = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1631 return (PyObject *)lz;
45562 43e084847e53 Have itertools.chain() consume its inputs lazily instead of building a tuple of iterators at the outset. Raymond Hettinger <python@rcn.com> parents: 45547 diff changeset	1632 }
43e084847e53 Have itertools.chain() consume its inputs lazily instead of building a tuple of iterators at the outset. Raymond Hettinger <python@rcn.com> parents: 45547 diff changeset	1633
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1634 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1635 chain_new(PyTypeObject type, PyObject args, PyObject *kwds)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1636 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1637 PyObject *source;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1638
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1639 if (type == &chain_type && !_PyArg_NoKeywords("chain()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1640 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1641
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1642 source = PyObject_GetIter(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1643 if (source == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1644 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1645
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1646 return chain_new_internal(type, source);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1647 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1648
45563 7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1649 static PyObject *
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1650 chain_new_from_iterable(PyTypeObject type, PyObject arg)
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1651 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1652 PyObject *source;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1653
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1654 source = PyObject_GetIter(arg);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1655 if (source == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1656 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1657
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1658 return chain_new_internal(type, source);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1659 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1660
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1661 static void
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1662 chain_dealloc(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1663 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1664 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1665 Py_XDECREF(lz->active);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1666 Py_XDECREF(lz->source);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1667 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1668 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1669
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1670 static int
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1671 chain_traverse(chainobject lz, visitproc visit, void arg)
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1672 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1673 Py_VISIT(lz->source);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1674 Py_VISIT(lz->active);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1675 return 0;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1676 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1677
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1678 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1679 chain_next(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1680 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1681 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1682
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1683 if (lz->source == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1684 return NULL; /* already stopped */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1685
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1686 if (lz->active == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1687 PyObject *iterable = PyIter_Next(lz->source);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1688 if (iterable == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1689 Py_CLEAR(lz->source);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1690 return NULL; /* no more input sources */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1691 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1692 lz->active = PyObject_GetIter(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1693 Py_DECREF(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1694 if (lz->active == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1695 Py_CLEAR(lz->source);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1696 return NULL; /* input not iterable */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1697 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1698 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1699 item = PyIter_Next(lz->active);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1700 if (item != NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1701 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1702 if (PyErr_Occurred()) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1703 if (PyErr_ExceptionMatches(PyExc_StopIteration))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1704 PyErr_Clear();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1705 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1706 return NULL; /* input raised an exception */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1707 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1708 Py_CLEAR(lz->active);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1709 return chain_next(lz); /* recurse and use next active */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1710 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1711
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1712 PyDoc_STRVAR(chain_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1713 "chain(*iterables) --> chain object\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1714 \n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1715 Return a chain object whose .next() method returns elements from the\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1716 first iterable until it is exhausted, then elements from the next\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1717 iterable, until all of the iterables are exhausted.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1718
45563 7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1719 PyDoc_STRVAR(chain_from_iterable_doc,
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1720 "chain.from_iterable(iterable) --> chain object\n\
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1721 \n\
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1722 Alternate chain() contructor taking a single iterable argument\n\
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1723 that evaluates lazily.");
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1724
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1725 static PyMethodDef chain_methods[] = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1726 {"from_iterable", (PyCFunction) chain_new_from_iterable, METH_O \| METH_CLASS,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1727 chain_from_iterable_doc},
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1728 {NULL, NULL} /* sentinel */
45563 7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1729 };
7da36b49c9e5 Add alternate constructor for itertools.chain(). Raymond Hettinger <python@rcn.com> parents: 45562 diff changeset	1730
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1731 static PyTypeObject chain_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1732 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1733 "itertools.chain", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1734 sizeof(chainobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1735 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1736 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1737 (destructor)chain_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1738 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1739 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1740 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1741 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1742 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1743 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1744 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1745 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1746 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1747 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1748 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1749 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1750 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1751 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1752 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1753 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1754 chain_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1755 (traverseproc)chain_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1756 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1757 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1758 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1759 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1760 (iternextfunc)chain_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1761 chain_methods, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1762 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1763 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1764 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1765 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1766 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1767 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1768 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1769 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1770 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1771 chain_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1772 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1773 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1774
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1775
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1776 /* product object ************************************************************/
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1777
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1778 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1779 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1780 PyObject pools; / tuple of pool tuples */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1781 Py_ssize_t indices; / one index per pool */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1782 PyObject result; / most recently returned result tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1783 int stopped; /* set to 1 when the product iterator is exhausted */
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1784 } productobject;
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1785
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1786 static PyTypeObject product_type;
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1787
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1788 static PyObject *
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1789 product_new(PyTypeObject type, PyObject args, PyObject *kwds)
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1790 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1791 productobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1792 Py_ssize_t nargs, npools, repeat=1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1793 PyObject *pools = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1794 Py_ssize_t *indices = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1795 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1796
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1797 if (kwds != NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1798 char *kwlist[] = {"repeat", 0};
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1799 PyObject *tmpargs = PyTuple_New(0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1800 if (tmpargs == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1801 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1802 if (!PyArg_ParseTupleAndKeywords(tmpargs, kwds, "\|n:product", kwlist, &repeat)) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1803 Py_DECREF(tmpargs);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1804 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1805 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1806 Py_DECREF(tmpargs);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1807 if (repeat < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1808 PyErr_SetString(PyExc_ValueError,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1809 "repeat argument cannot be negative");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1810 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1811 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1812 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1813
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1814 assert(PyTuple_Check(args));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1815 nargs = (repeat == 0) ? 0 : PyTuple_GET_SIZE(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1816 npools = nargs * repeat;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1817
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1818 indices = PyMem_Malloc(npools * sizeof(Py_ssize_t));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1819 if (indices == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1820 PyErr_NoMemory();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1821 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1822 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1823
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1824 pools = PyTuple_New(npools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1825 if (pools == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1826 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1827
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1828 for (i=0; i < nargs ; ++i) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1829 PyObject *item = PyTuple_GET_ITEM(args, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1830 PyObject *pool = PySequence_Tuple(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1831 if (pool == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1832 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1833 PyTuple_SET_ITEM(pools, i, pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1834 indices[i] = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1835 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1836 for ( ; i < npools; ++i) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1837 PyObject *pool = PyTuple_GET_ITEM(pools, i - nargs);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1838 Py_INCREF(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1839 PyTuple_SET_ITEM(pools, i, pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1840 indices[i] = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1841 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1842
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1843 /* create productobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1844 lz = (productobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1845 if (lz == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1846 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1847
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1848 lz->pools = pools;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1849 lz->indices = indices;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1850 lz->result = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1851 lz->stopped = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1852
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1853 return (PyObject *)lz;
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1854
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1855 error:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1856 if (indices != NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1857 PyMem_Free(indices);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1858 Py_XDECREF(pools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1859 return NULL;
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1860 }
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1861
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1862 static void
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1863 product_dealloc(productobject *lz)
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1864 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1865 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1866 Py_XDECREF(lz->pools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1867 Py_XDECREF(lz->result);
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	1868 if (lz->indices != NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	1869 PyMem_Free(lz->indices);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1870 Py_TYPE(lz)->tp_free(lz);
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1871 }
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1872
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1873 static int
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1874 product_traverse(productobject lz, visitproc visit, void arg)
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1875 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1876 Py_VISIT(lz->pools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1877 Py_VISIT(lz->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1878 return 0;
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1879 }
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1880
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1881 static PyObject *
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1882 product_next(productobject *lz)
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1883 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1884 PyObject *pool;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1885 PyObject *elem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1886 PyObject *oldelem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1887 PyObject *pools = lz->pools;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1888 PyObject *result = lz->result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1889 Py_ssize_t npools = PyTuple_GET_SIZE(pools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1890 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1891
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1892 if (lz->stopped)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1893 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1894
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1895 if (result == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1896 /* On the first pass, return an initial tuple filled with the
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1897 first element from each pool. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1898 result = PyTuple_New(npools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1899 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1900 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1901 lz->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1902 for (i=0; i < npools; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1903 pool = PyTuple_GET_ITEM(pools, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1904 if (PyTuple_GET_SIZE(pool) == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1905 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1906 elem = PyTuple_GET_ITEM(pool, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1907 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1908 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1909 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1910 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1911 Py_ssize_t *indices = lz->indices;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1912
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1913 /* Copy the previous result tuple or re-use it if available */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1914 if (Py_REFCNT(result) > 1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1915 PyObject *old_result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1916 result = PyTuple_New(npools);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1917 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1918 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1919 lz->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1920 for (i=0; i < npools; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1921 elem = PyTuple_GET_ITEM(old_result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1922 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1923 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1924 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1925 Py_DECREF(old_result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1926 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1927 /* Now, we've got the only copy so we can update it in-place */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1928 assert (npools==0 \|\| Py_REFCNT(result) == 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1929
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1930 /* Update the pool indices right-to-left. Only advance to the
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1931 next pool when the previous one rolls-over */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1932 for (i=npools-1 ; i >= 0 ; i--) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1933 pool = PyTuple_GET_ITEM(pools, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1934 indices[i]++;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1935 if (indices[i] == PyTuple_GET_SIZE(pool)) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1936 /* Roll-over and advance to next pool */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1937 indices[i] = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1938 elem = PyTuple_GET_ITEM(pool, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1939 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1940 oldelem = PyTuple_GET_ITEM(result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1941 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1942 Py_DECREF(oldelem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1943 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1944 /* No rollover. Just increment and stop here. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1945 elem = PyTuple_GET_ITEM(pool, indices[i]);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1946 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1947 oldelem = PyTuple_GET_ITEM(result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1948 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1949 Py_DECREF(oldelem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1950 break;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1951 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1952 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1953
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1954 /* If i is negative, then the indices have all rolled-over
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1955 and we're done. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1956 if (i < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1957 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1958 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1959
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1960 Py_INCREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1961 return result;
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1962
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1963 empty:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1964 lz->stopped = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1965 return NULL;
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1966 }
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1967
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1968 PyDoc_STRVAR(product_doc,
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1969 "product(*iterables) --> product object\n\
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1970 \n\
45438 11a73fbbf86f Improve the implementation of itertools.product() Raymond Hettinger <python@rcn.com> parents: 45425 diff changeset	1971 Cartesian product of input iterables. Equivalent to nested for-loops.\n\n\
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1972 For example, product(A, B) returns the same as: ((x,y) for x in A for y in B).\n\
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1973 The leftmost iterators are in the outermost for-loop, so the output tuples\n\
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1974 cycle in a manner similar to an odometer (with the rightmost element changing\n\
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1975 on every iteration).\n\n\
51486 154e7c474aad Issue 5171: itertools.product docstring missing 'repeat' argument Raymond Hettinger <python@rcn.com> parents: 51164 diff changeset	1976 To compute the product of an iterable with itself, specify the number\n\
154e7c474aad Issue 5171: itertools.product docstring missing 'repeat' argument Raymond Hettinger <python@rcn.com> parents: 51164 diff changeset	1977 of repetitions with the optional repeat keyword argument. For example,\n\
154e7c474aad Issue 5171: itertools.product docstring missing 'repeat' argument Raymond Hettinger <python@rcn.com> parents: 51164 diff changeset	1978 product(A, repeat=4) means the same as product(A, A, A, A).\n\n\
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1979 product('ab', range(3)) --> ('a',0) ('a',1) ('a',2) ('b',0) ('b',1) ('b',2)\n\
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1980 product((0,1), (0,1), (0,1)) --> (0,0,0) (0,0,1) (0,1,0) (0,1,1) (1,0,0) ...");
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1981
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	1982 static PyTypeObject product_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1983 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1984 "itertools.product", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1985 sizeof(productobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1986 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1987 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1988 (destructor)product_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1989 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1990 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1991 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1992 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1993 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1994 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1995 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1996 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1997 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1998 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	1999 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2000 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2001 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2002 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2003 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2004 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2005 product_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2006 (traverseproc)product_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2007 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2008 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2009 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2010 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2011 (iternextfunc)product_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2012 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2013 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2014 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2015 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2016 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2017 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2018 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2019 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2020 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2021 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2022 product_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2023 PyObject_GC_Del, /* tp_free */
45425 3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	2024 };
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	2025
3cc57fd87d0e First draft for itertools.product(). Docs and other updates forthcoming. Raymond Hettinger <python@rcn.com> parents: 44717 diff changeset	2026
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2027 /* combinations object ************************************************************/
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2028
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2029 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2030 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2031 PyObject pool; / input converted to a tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2032 Py_ssize_t indices; / one index per result element */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2033 PyObject result; / most recently returned result tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2034 Py_ssize_t r; /* size of result tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2035 int stopped; /* set to 1 when the combinations iterator is exhausted */
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2036 } combinationsobject;
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2037
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2038 static PyTypeObject combinations_type;
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2039
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2040 static PyObject *
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2041 combinations_new(PyTypeObject type, PyObject args, PyObject *kwds)
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2042 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2043 combinationsobject *co;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2044 Py_ssize_t n;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2045 Py_ssize_t r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2046 PyObject *pool = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2047 PyObject *iterable = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2048 Py_ssize_t *indices = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2049 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2050 static char *kwargs[] = {"iterable", "r", NULL};
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2051
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2052 if (!PyArg_ParseTupleAndKeywords(args, kwds, "On:combinations", kwargs,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2053 &iterable, &r))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2054 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2055
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2056 pool = PySequence_Tuple(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2057 if (pool == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2058 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2059 n = PyTuple_GET_SIZE(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2060 if (r < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2061 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2062 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2063 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2064
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2065 indices = PyMem_Malloc(r * sizeof(Py_ssize_t));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2066 if (indices == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2067 PyErr_NoMemory();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2068 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2069 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2070
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2071 for (i=0 ; i<r ; i++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2072 indices[i] = i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2073
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2074 /* create combinationsobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2075 co = (combinationsobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2076 if (co == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2077 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2078
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2079 co->pool = pool;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2080 co->indices = indices;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2081 co->result = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2082 co->r = r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2083 co->stopped = r > n ? 1 : 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2084
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2085 return (PyObject *)co;
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2086
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2087 error:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2088 if (indices != NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2089 PyMem_Free(indices);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2090 Py_XDECREF(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2091 return NULL;
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2092 }
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2093
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2094 static void
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2095 combinations_dealloc(combinationsobject *co)
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2096 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2097 PyObject_GC_UnTrack(co);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2098 Py_XDECREF(co->pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2099 Py_XDECREF(co->result);
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2100 if (co->indices != NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2101 PyMem_Free(co->indices);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2102 Py_TYPE(co)->tp_free(co);
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2103 }
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2104
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2105 static int
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2106 combinations_traverse(combinationsobject co, visitproc visit, void arg)
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2107 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2108 Py_VISIT(co->pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2109 Py_VISIT(co->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2110 return 0;
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2111 }
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2112
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2113 static PyObject *
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2114 combinations_next(combinationsobject *co)
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2115 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2116 PyObject *elem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2117 PyObject *oldelem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2118 PyObject *pool = co->pool;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2119 Py_ssize_t *indices = co->indices;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2120 PyObject *result = co->result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2121 Py_ssize_t n = PyTuple_GET_SIZE(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2122 Py_ssize_t r = co->r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2123 Py_ssize_t i, j, index;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2124
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2125 if (co->stopped)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2126 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2127
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2128 if (result == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2129 /* On the first pass, initialize result tuple using the indices */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2130 result = PyTuple_New(r);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2131 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2132 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2133 co->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2134 for (i=0; i<r ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2135 index = indices[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2136 elem = PyTuple_GET_ITEM(pool, index);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2137 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2138 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2139 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2140 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2141 /* Copy the previous result tuple or re-use it if available */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2142 if (Py_REFCNT(result) > 1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2143 PyObject *old_result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2144 result = PyTuple_New(r);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2145 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2146 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2147 co->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2148 for (i=0; i<r ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2149 elem = PyTuple_GET_ITEM(old_result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2150 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2151 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2152 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2153 Py_DECREF(old_result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2154 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2155 /* Now, we've got the only copy so we can update it in-place
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2156 * CPython's empty tuple is a singleton and cached in
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2157 * PyTuple's freelist.
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2158 */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2159 assert(r == 0 \|\| Py_REFCNT(result) == 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2160
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2161 /* Scan indices right-to-left until finding one that is not
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2162 at its maximum (i + n - r). */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2163 for (i=r-1 ; i >= 0 && indices[i] == i+n-r ; i--)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2164 ;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2165
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2166 /* If i is negative, then the indices are all at
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2167 their maximum value and we're done. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2168 if (i < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2169 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2170
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2171 /* Increment the current index which we know is not at its
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2172 maximum. Then move back to the right setting each index
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2173 to its lowest possible value (one higher than the index
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2174 to its left -- this maintains the sort order invariant). */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2175 indices[i]++;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2176 for (j=i+1 ; j<r ; j++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2177 indices[j] = indices[j-1] + 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2178
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2179 /* Update the result tuple for the new indices
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2180 starting with i, the leftmost index that changed */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2181 for ( ; i<r ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2182 index = indices[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2183 elem = PyTuple_GET_ITEM(pool, index);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2184 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2185 oldelem = PyTuple_GET_ITEM(result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2186 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2187 Py_DECREF(oldelem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2188 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2189 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2190
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2191 Py_INCREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2192 return result;
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2193
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2194 empty:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2195 co->stopped = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2196 return NULL;
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2197 }
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2198
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2199 PyDoc_STRVAR(combinations_doc,
57345 f73d137cfbd0 Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57036 diff changeset	2200 "combinations(iterable, r) --> combinations object\n\
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2201 \n\
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2202 Return successive r-length combinations of elements in the iterable.\n\n\
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2203 combinations(range(4), 3) --> (0,1,2), (0,1,3), (0,2,3), (1,2,3)");
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2204
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2205 static PyTypeObject combinations_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2206 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2207 "itertools.combinations", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2208 sizeof(combinationsobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2209 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2210 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2211 (destructor)combinations_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2212 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2213 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2214 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2215 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2216 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2217 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2218 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2219 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2220 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2221 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2222 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2223 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2224 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2225 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2226 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2227 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2228 combinations_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2229 (traverseproc)combinations_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2230 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2231 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2232 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2233 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2234 (iternextfunc)combinations_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2235 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2236 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2237 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2238 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2239 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2240 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2241 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2242 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2243 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2244 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2245 combinations_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2246 PyObject_GC_Del, /* tp_free */
45539 ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2247 };
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2248
ca45eb71f2d2 Add itertools.combinations(). Raymond Hettinger <python@rcn.com> parents: 45526 diff changeset	2249
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2250 /* combinations with replacement object *******************************************/
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2251
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2252 /* Equivalent to:
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2253
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2254 def combinations_with_replacement(iterable, r):
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2255 "combinations_with_replacement('ABC', 2) --> AA AB AC BB BC CC"
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2256 # number items returned: (n+r-1)! / r! / (n-1)!
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2257 pool = tuple(iterable)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2258 n = len(pool)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2259 indices = [0] * r
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2260 yield tuple(pool[i] for i in indices)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2261 while 1:
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2262 for i in reversed(range(r)):
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2263 if indices[i] != n - 1:
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2264 break
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2265 else:
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2266 return
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2267 indices[i:] = [indices[i] + 1] * (r - i)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2268 yield tuple(pool[i] for i in indices)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2269
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2270 def combinations_with_replacement2(iterable, r):
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2271 'Alternate version that filters from product()'
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2272 pool = tuple(iterable)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2273 n = len(pool)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2274 for indices in product(range(n), repeat=r):
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2275 if sorted(indices) == list(indices):
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2276 yield tuple(pool[i] for i in indices)
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2277 */
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2278 typedef struct {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2279 PyObject_HEAD
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2280 PyObject pool; / input converted to a tuple */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2281 Py_ssize_t indices; / one index per result element */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2282 PyObject result; / most recently returned result tuple */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2283 Py_ssize_t r; /* size of result tuple */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2284 int stopped; /* set to 1 when the cwr iterator is exhausted */
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2285 } cwrobject;
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2286
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2287 static PyTypeObject cwr_type;
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2288
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2289 static PyObject *
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2290 cwr_new(PyTypeObject type, PyObject args, PyObject *kwds)
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2291 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2292 cwrobject *co;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2293 Py_ssize_t n;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2294 Py_ssize_t r;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2295 PyObject *pool = NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2296 PyObject *iterable = NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2297 Py_ssize_t *indices = NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2298 Py_ssize_t i;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2299 static char *kwargs[] = {"iterable", "r", NULL};
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2300
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2301 if (!PyArg_ParseTupleAndKeywords(args, kwds, "On:combinations_with_replacement", kwargs,
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2302 &iterable, &r))
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2303 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2304
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2305 pool = PySequence_Tuple(iterable);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2306 if (pool == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2307 goto error;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2308 n = PyTuple_GET_SIZE(pool);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2309 if (r < 0) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2310 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2311 goto error;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2312 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2313
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2314 indices = PyMem_Malloc(r * sizeof(Py_ssize_t));
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2315 if (indices == NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2316 PyErr_NoMemory();
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2317 goto error;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2318 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2319
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2320 for (i=0 ; i<r ; i++)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2321 indices[i] = 0;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2322
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2323 /* create cwrobject structure */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2324 co = (cwrobject *)type->tp_alloc(type, 0);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2325 if (co == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2326 goto error;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2327
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2328 co->pool = pool;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2329 co->indices = indices;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2330 co->result = NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2331 co->r = r;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2332 co->stopped = !n && r;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2333
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2334 return (PyObject *)co;
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2335
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2336 error:
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2337 if (indices != NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2338 PyMem_Free(indices);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2339 Py_XDECREF(pool);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2340 return NULL;
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2341 }
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2342
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2343 static void
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2344 cwr_dealloc(cwrobject *co)
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2345 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2346 PyObject_GC_UnTrack(co);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2347 Py_XDECREF(co->pool);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2348 Py_XDECREF(co->result);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2349 if (co->indices != NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2350 PyMem_Free(co->indices);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2351 Py_TYPE(co)->tp_free(co);
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2352 }
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2353
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2354 static int
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2355 cwr_traverse(cwrobject co, visitproc visit, void arg)
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2356 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2357 Py_VISIT(co->pool);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2358 Py_VISIT(co->result);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2359 return 0;
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2360 }
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2361
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2362 static PyObject *
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2363 cwr_next(cwrobject *co)
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2364 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2365 PyObject *elem;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2366 PyObject *oldelem;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2367 PyObject *pool = co->pool;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2368 Py_ssize_t *indices = co->indices;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2369 PyObject *result = co->result;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2370 Py_ssize_t n = PyTuple_GET_SIZE(pool);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2371 Py_ssize_t r = co->r;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2372 Py_ssize_t i, j, index;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2373
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2374 if (co->stopped)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2375 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2376
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2377 if (result == NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2378 /* On the first pass, initialize result tuple using the indices */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2379 result = PyTuple_New(r);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2380 if (result == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2381 goto empty;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2382 co->result = result;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2383 for (i=0; i<r ; i++) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2384 index = indices[i];
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2385 elem = PyTuple_GET_ITEM(pool, index);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2386 Py_INCREF(elem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2387 PyTuple_SET_ITEM(result, i, elem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2388 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2389 } else {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2390 /* Copy the previous result tuple or re-use it if available */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2391 if (Py_REFCNT(result) > 1) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2392 PyObject *old_result = result;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2393 result = PyTuple_New(r);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2394 if (result == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2395 goto empty;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2396 co->result = result;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2397 for (i=0; i<r ; i++) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2398 elem = PyTuple_GET_ITEM(old_result, i);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2399 Py_INCREF(elem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2400 PyTuple_SET_ITEM(result, i, elem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2401 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2402 Py_DECREF(old_result);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2403 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2404 /* Now, we've got the only copy so we can update it in-place CPython's
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2405 empty tuple is a singleton and cached in PyTuple's freelist. */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2406 assert(r == 0 \|\| Py_REFCNT(result) == 1);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2407
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2408 /* Scan indices right-to-left until finding one that is not
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2409 * at its maximum (n-1). */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2410 for (i=r-1 ; i >= 0 && indices[i] == n-1; i--)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2411 ;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2412
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2413 /* If i is negative, then the indices are all at
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2414 their maximum value and we're done. */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2415 if (i < 0)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2416 goto empty;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2417
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2418 /* Increment the current index which we know is not at its
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2419 maximum. Then set all to the right to the same value. */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2420 indices[i]++;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2421 for (j=i+1 ; j<r ; j++)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2422 indices[j] = indices[j-1];
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2423
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2424 /* Update the result tuple for the new indices
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2425 starting with i, the leftmost index that changed */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2426 for ( ; i<r ; i++) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2427 index = indices[i];
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2428 elem = PyTuple_GET_ITEM(pool, index);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2429 Py_INCREF(elem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2430 oldelem = PyTuple_GET_ITEM(result, i);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2431 PyTuple_SET_ITEM(result, i, elem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2432 Py_DECREF(oldelem);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2433 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2434 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2435
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2436 Py_INCREF(result);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2437 return result;
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2438
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2439 empty:
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2440 co->stopped = 1;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2441 return NULL;
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2442 }
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2443
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2444 PyDoc_STRVAR(cwr_doc,
57343 f152667200ae Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57040 diff changeset	2445 "combinations_with_replacement(iterable, r) --> combinations_with_replacement object\n\
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2446 \n\
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2447 Return successive r-length combinations of elements in the iterable\n\
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2448 allowing individual elements to have successive repeats.\n\
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2449 combinations_with_replacement('ABC', 2) --> AA AB AC BB BC CC");
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2450
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2451 static PyTypeObject cwr_type = {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2452 PyVarObject_HEAD_INIT(NULL, 0)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2453 "itertools.combinations_with_replacement", /* tp_name */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2454 sizeof(cwrobject), /* tp_basicsize */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2455 0, /* tp_itemsize */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2456 /* methods */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2457 (destructor)cwr_dealloc, /* tp_dealloc */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2458 0, /* tp_print */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2459 0, /* tp_getattr */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2460 0, /* tp_setattr */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2461 0, /* tp_compare */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2462 0, /* tp_repr */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2463 0, /* tp_as_number */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2464 0, /* tp_as_sequence */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2465 0, /* tp_as_mapping */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2466 0, /* tp_hash */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2467 0, /* tp_call */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2468 0, /* tp_str */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2469 PyObject_GenericGetAttr, /* tp_getattro */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2470 0, /* tp_setattro */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2471 0, /* tp_as_buffer */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2472 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2473 Py_TPFLAGS_BASETYPE, /* tp_flags */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2474 cwr_doc, /* tp_doc */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2475 (traverseproc)cwr_traverse, /* tp_traverse */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2476 0, /* tp_clear */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2477 0, /* tp_richcompare */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2478 0, /* tp_weaklistoffset */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2479 PyObject_SelfIter, /* tp_iter */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2480 (iternextfunc)cwr_next, /* tp_iternext */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2481 0, /* tp_methods */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2482 0, /* tp_members */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2483 0, /* tp_getset */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2484 0, /* tp_base */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2485 0, /* tp_dict */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2486 0, /* tp_descr_get */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2487 0, /* tp_descr_set */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2488 0, /* tp_dictoffset */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2489 0, /* tp_init */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2490 0, /* tp_alloc */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2491 cwr_new, /* tp_new */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2492 PyObject_GC_Del, /* tp_free */
51097 b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2493 };
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2494
b7ce675febb9 Promote combinations_with_replacement() from a recipe to a regular itertool. Raymond Hettinger <python@rcn.com> parents: 51045 diff changeset	2495
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2496 /* permutations object ************************************************************
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2497
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2498 def permutations(iterable, r=None):
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2499 'permutations(range(3), 2) --> (0,1) (0,2) (1,0) (1,2) (2,0) (2,1)'
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2500 pool = tuple(iterable)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2501 n = len(pool)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2502 r = n if r is None else r
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2503 indices = range(n)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2504 cycles = range(n-r+1, n+1)[::-1]
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2505 yield tuple(pool[i] for i in indices[:r])
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2506 while n:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2507 for i in reversed(range(r)):
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2508 cycles[i] -= 1
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2509 if cycles[i] == 0:
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2510 indices[i:] = indices[i+1:] + indices[i:i+1]
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2511 cycles[i] = n - i
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2512 else:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2513 j = cycles[i]
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2514 indices[i], indices[-j] = indices[-j], indices[i]
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2515 yield tuple(pool[i] for i in indices[:r])
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2516 break
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2517 else:
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2518 return
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2519 */
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2520
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2521 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2522 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2523 PyObject pool; / input converted to a tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2524 Py_ssize_t indices; / one index per element in the pool */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2525 Py_ssize_t cycles; / one rollover counter per element in the result */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2526 PyObject result; / most recently returned result tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2527 Py_ssize_t r; /* size of result tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2528 int stopped; /* set to 1 when the permutations iterator is exhausted */
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2529 } permutationsobject;
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2530
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2531 static PyTypeObject permutations_type;
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2532
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2533 static PyObject *
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2534 permutations_new(PyTypeObject type, PyObject args, PyObject *kwds)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2535 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2536 permutationsobject *po;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2537 Py_ssize_t n;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2538 Py_ssize_t r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2539 PyObject *robj = Py_None;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2540 PyObject *pool = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2541 PyObject *iterable = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2542 Py_ssize_t *indices = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2543 Py_ssize_t *cycles = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2544 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2545 static char *kwargs[] = {"iterable", "r", NULL};
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2546
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2547 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O\|O:permutations", kwargs,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2548 &iterable, &robj))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2549 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2550
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2551 pool = PySequence_Tuple(iterable);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2552 if (pool == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2553 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2554 n = PyTuple_GET_SIZE(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2555
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2556 r = n;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2557 if (robj != Py_None) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2558 r = PyInt_AsSsize_t(robj);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2559 if (r == -1 && PyErr_Occurred())
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2560 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2561 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2562 if (r < 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2563 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2564 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2565 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2566
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2567 indices = PyMem_Malloc(n * sizeof(Py_ssize_t));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2568 cycles = PyMem_Malloc(r * sizeof(Py_ssize_t));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2569 if (indices == NULL \|\| cycles == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2570 PyErr_NoMemory();
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2571 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2572 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2573
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2574 for (i=0 ; i<n ; i++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2575 indices[i] = i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2576 for (i=0 ; i<r ; i++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2577 cycles[i] = n - i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2578
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2579 /* create permutationsobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2580 po = (permutationsobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2581 if (po == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2582 goto error;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2583
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2584 po->pool = pool;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2585 po->indices = indices;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2586 po->cycles = cycles;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2587 po->result = NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2588 po->r = r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2589 po->stopped = r > n ? 1 : 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2590
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2591 return (PyObject *)po;
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2592
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2593 error:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2594 if (indices != NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2595 PyMem_Free(indices);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2596 if (cycles != NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2597 PyMem_Free(cycles);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2598 Py_XDECREF(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2599 return NULL;
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2600 }
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2601
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2602 static void
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2603 permutations_dealloc(permutationsobject *po)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2604 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2605 PyObject_GC_UnTrack(po);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2606 Py_XDECREF(po->pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2607 Py_XDECREF(po->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2608 PyMem_Free(po->indices);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2609 PyMem_Free(po->cycles);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2610 Py_TYPE(po)->tp_free(po);
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2611 }
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2612
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2613 static int
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2614 permutations_traverse(permutationsobject po, visitproc visit, void arg)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2615 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2616 Py_VISIT(po->pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2617 Py_VISIT(po->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2618 return 0;
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2619 }
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2620
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2621 static PyObject *
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2622 permutations_next(permutationsobject *po)
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2623 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2624 PyObject *elem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2625 PyObject *oldelem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2626 PyObject *pool = po->pool;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2627 Py_ssize_t *indices = po->indices;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2628 Py_ssize_t *cycles = po->cycles;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2629 PyObject *result = po->result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2630 Py_ssize_t n = PyTuple_GET_SIZE(pool);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2631 Py_ssize_t r = po->r;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2632 Py_ssize_t i, j, k, index;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2633
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2634 if (po->stopped)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2635 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2636
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2637 if (result == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2638 /* On the first pass, initialize result tuple using the indices */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2639 result = PyTuple_New(r);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2640 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2641 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2642 po->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2643 for (i=0; i<r ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2644 index = indices[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2645 elem = PyTuple_GET_ITEM(pool, index);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2646 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2647 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2648 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2649 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2650 if (n == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2651 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2652
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2653 /* Copy the previous result tuple or re-use it if available */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2654 if (Py_REFCNT(result) > 1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2655 PyObject *old_result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2656 result = PyTuple_New(r);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2657 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2658 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2659 po->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2660 for (i=0; i<r ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2661 elem = PyTuple_GET_ITEM(old_result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2662 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2663 PyTuple_SET_ITEM(result, i, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2664 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2665 Py_DECREF(old_result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2666 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2667 /* Now, we've got the only copy so we can update it in-place */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2668 assert(r == 0 \|\| Py_REFCNT(result) == 1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2669
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2670 /* Decrement rightmost cycle, moving leftward upon zero rollover */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2671 for (i=r-1 ; i>=0 ; i--) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2672 cycles[i] -= 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2673 if (cycles[i] == 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2674 /* rotatation: indices[i:] = indices[i+1:] + indices[i:i+1] */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2675 index = indices[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2676 for (j=i ; j<n-1 ; j++)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2677 indices[j] = indices[j+1];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2678 indices[n-1] = index;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2679 cycles[i] = n - i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2680 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2681 j = cycles[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2682 index = indices[i];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2683 indices[i] = indices[n-j];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2684 indices[n-j] = index;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2685
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2686 for (k=i; k<r ; k++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2687 /* start with i, the leftmost element that changed */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2688 /* yield tuple(pool[k] for k in indices[:r]) */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2689 index = indices[k];
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2690 elem = PyTuple_GET_ITEM(pool, index);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2691 Py_INCREF(elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2692 oldelem = PyTuple_GET_ITEM(result, k);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2693 PyTuple_SET_ITEM(result, k, elem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2694 Py_DECREF(oldelem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2695 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2696 break;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2697 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2698 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2699 /* If i is negative, then the cycles have all
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2700 rolled-over and we're done. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2701 if (i < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2702 goto empty;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2703 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2704 Py_INCREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2705 return result;
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2706
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2707 empty:
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2708 po->stopped = 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2709 return NULL;
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2710 }
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2711
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2712 PyDoc_STRVAR(permutations_doc,
47544 f4989516b4d6 #2536: fix itertools.permutations and itertools.combinations docstrings. Georg Brandl <georg@python.org> parents: 47527 diff changeset	2713 "permutations(iterable[, r]) --> permutations object\n\
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2714 \n\
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2715 Return successive r-length permutations of elements in the iterable.\n\n\
47544 f4989516b4d6 #2536: fix itertools.permutations and itertools.combinations docstrings. Georg Brandl <georg@python.org> parents: 47527 diff changeset	2716 permutations(range(3), 2) --> (0,1), (0,2), (1,0), (1,2), (2,0), (2,1)");
45675 c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2717
c197e18449b4 C implementation of itertools.permutations(). Raymond Hettinger <python@rcn.com> parents: 45658 diff changeset	2718 static PyTypeObject permutations_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2719 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2720 "itertools.permutations", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2721 sizeof(permutationsobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2722 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2723 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2724 (destructor)permutations_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2725 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2726 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2727 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2728 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2729 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2730 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2731 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2732 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2733 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2734 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2735 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2736 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2737 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2738 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2739 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2740 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2741 permutations_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2742 (traverseproc)permutations_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2743 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2744 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2745 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2746 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2747 (iternextfunc)permutations_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2748 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2749 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2750 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2751 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2752 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2753 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2754 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2755 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2756 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2757 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2758 permutations_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2759 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2760 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2761
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2762
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2763 /* compress object ************************************************************/
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2764
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2765 /* Equivalent to:
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2766
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2767 def compress(data, selectors):
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2768 "compress('ABCDEF', [1,0,1,0,1,1]) --> A C E F"
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2769 return (d for d, s in izip(data, selectors) if s)
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2770 */
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2771
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2772 typedef struct {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2773 PyObject_HEAD
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2774 PyObject *data;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2775 PyObject *selectors;
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2776 } compressobject;
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2777
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2778 static PyTypeObject compress_type;
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2779
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2780 static PyObject *
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2781 compress_new(PyTypeObject type, PyObject args, PyObject *kwds)
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2782 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2783 PyObject seq1, seq2;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2784 PyObject data=NULL, selectors=NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2785 compressobject *lz;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2786 static char *kwargs[] = {"data", "selectors", NULL};
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2787
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2788 if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO:compress", kwargs, &seq1, &seq2))
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2789 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2790
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2791 data = PyObject_GetIter(seq1);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2792 if (data == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2793 goto fail;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2794 selectors = PyObject_GetIter(seq2);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2795 if (selectors == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2796 goto fail;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2797
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2798 /* create compressobject structure */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2799 lz = (compressobject *)type->tp_alloc(type, 0);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2800 if (lz == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2801 goto fail;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2802 lz->data = data;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2803 lz->selectors = selectors;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2804 return (PyObject *)lz;
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2805
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2806 fail:
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2807 Py_XDECREF(data);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2808 Py_XDECREF(selectors);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2809 return NULL;
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2810 }
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2811
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2812 static void
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2813 compress_dealloc(compressobject *lz)
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2814 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2815 PyObject_GC_UnTrack(lz);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2816 Py_XDECREF(lz->data);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2817 Py_XDECREF(lz->selectors);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2818 Py_TYPE(lz)->tp_free(lz);
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2819 }
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2820
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2821 static int
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2822 compress_traverse(compressobject lz, visitproc visit, void arg)
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2823 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2824 Py_VISIT(lz->data);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2825 Py_VISIT(lz->selectors);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2826 return 0;
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2827 }
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2828
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2829 static PyObject *
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2830 compress_next(compressobject *lz)
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2831 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2832 PyObject data = lz->data, selectors = lz->selectors;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2833 PyObject datum, selector;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2834 PyObject (datanext)(PyObject ) = Py_TYPE(data)->tp_iternext;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2835 PyObject (selectornext)(PyObject ) = Py_TYPE(selectors)->tp_iternext;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2836 int ok;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2837
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2838 while (1) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2839 /* Steps: get datum, get selector, evaluate selector.
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2840 Order is important (to match the pure python version
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2841 in terms of which input gets a chance to raise an
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2842 exception first).
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2843 */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2844
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2845 datum = datanext(data);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2846 if (datum == NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2847 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2848
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2849 selector = selectornext(selectors);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2850 if (selector == NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2851 Py_DECREF(datum);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2852 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2853 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2854
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2855 ok = PyObject_IsTrue(selector);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2856 Py_DECREF(selector);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2857 if (ok == 1)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2858 return datum;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2859 Py_DECREF(datum);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2860 if (ok == -1)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2861 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2862 }
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2863 }
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2864
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2865 PyDoc_STRVAR(compress_doc,
51715 748dfe9bb857 Add keyword arg support to itertools.compress(). Raymond Hettinger <python@rcn.com> parents: 51665 diff changeset	2866 "compress(data, selectors) --> iterator over selected data\n\
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2867 \n\
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2868 Return data elements corresponding to true selector elements.\n\
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2869 Forms a shorter iterator from selected data elements using the\n\
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2870 selectors to choose the data elements.");
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2871
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2872 static PyTypeObject compress_type = {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2873 PyVarObject_HEAD_INIT(NULL, 0)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2874 "itertools.compress", /* tp_name */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2875 sizeof(compressobject), /* tp_basicsize */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2876 0, /* tp_itemsize */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2877 /* methods */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2878 (destructor)compress_dealloc, /* tp_dealloc */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2879 0, /* tp_print */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2880 0, /* tp_getattr */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2881 0, /* tp_setattr */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2882 0, /* tp_compare */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2883 0, /* tp_repr */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2884 0, /* tp_as_number */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2885 0, /* tp_as_sequence */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2886 0, /* tp_as_mapping */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2887 0, /* tp_hash */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2888 0, /* tp_call */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2889 0, /* tp_str */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2890 PyObject_GenericGetAttr, /* tp_getattro */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2891 0, /* tp_setattro */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2892 0, /* tp_as_buffer */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2893 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2894 Py_TPFLAGS_BASETYPE, /* tp_flags */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2895 compress_doc, /* tp_doc */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2896 (traverseproc)compress_traverse, /* tp_traverse */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2897 0, /* tp_clear */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2898 0, /* tp_richcompare */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2899 0, /* tp_weaklistoffset */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2900 PyObject_SelfIter, /* tp_iter */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2901 (iternextfunc)compress_next, /* tp_iternext */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2902 0, /* tp_methods */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2903 0, /* tp_members */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2904 0, /* tp_getset */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2905 0, /* tp_base */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2906 0, /* tp_dict */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2907 0, /* tp_descr_get */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2908 0, /* tp_descr_set */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2909 0, /* tp_dictoffset */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2910 0, /* tp_init */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2911 0, /* tp_alloc */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2912 compress_new, /* tp_new */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	2913 PyObject_GC_Del, /* tp_free */
51045 14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2914 };
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2915
14ace205447b Promote compress() from a recipe to being a regular itertool. Raymond Hettinger <python@rcn.com> parents: 50754 diff changeset	2916
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2917 /* ifilter object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2918
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2919 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2920 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2921 PyObject *func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2922 PyObject *it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2923 } ifilterobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2924
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2925 static PyTypeObject ifilter_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2926
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2927 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2928 ifilter_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2929 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2930 PyObject func, seq;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2931 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2932 ifilterobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2933
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2934 if (type == &ifilter_type && !_PyArg_NoKeywords("ifilter()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2935 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2936
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2937 if (!PyArg_UnpackTuple(args, "ifilter", 2, 2, &func, &seq))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2938 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2939
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2940 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2941 it = PyObject_GetIter(seq);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2942 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2943 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2944
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2945 /* create ifilterobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2946 lz = (ifilterobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2947 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2948 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2949 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2950 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2951 Py_INCREF(func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2952 lz->func = func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2953 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2954
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2955 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2956 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2957
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2958 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2959 ifilter_dealloc(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2960 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2961 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2962 Py_XDECREF(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2963 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2964 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2965 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2966
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2967 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2968 ifilter_traverse(ifilterobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2969 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2970 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2971 Py_VISIT(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2972 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2973 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2974
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2975 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2976 ifilter_next(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2977 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2978 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2979 PyObject *it = lz->it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2980 long ok;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2981 PyObject (iternext)(PyObject *);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2982
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2983 iternext = *Py_TYPE(it)->tp_iternext;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2984 for (;;) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2985 item = iternext(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2986 if (item == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2987 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2988
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2989 if (lz->func == Py_None \|\| lz->func == (PyObject *)&PyBool_Type) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2990 ok = PyObject_IsTrue(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2991 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2992 PyObject *good;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2993 good = PyObject_CallFunctionObjArgs(lz->func,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2994 item, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2995 if (good == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2996 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2997 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2998 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	2999 ok = PyObject_IsTrue(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3000 Py_DECREF(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3001 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3002 if (ok)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3003 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3004 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3005 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3006 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3007
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3008 PyDoc_STRVAR(ifilter_doc,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3009 "ifilter(function or None, sequence) --> ifilter object\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3010 \n\
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3011 Return those items of sequence for which function(item) is true.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3012 If function is None, return the items that are true.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3013
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3014 static PyTypeObject ifilter_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3015 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3016 "itertools.ifilter", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3017 sizeof(ifilterobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3018 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3019 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3020 (destructor)ifilter_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3021 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3022 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3023 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3024 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3025 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3026 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3027 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3028 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3029 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3030 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3031 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3032 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3033 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3034 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3035 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3036 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3037 ifilter_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3038 (traverseproc)ifilter_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3039 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3040 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3041 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3042 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3043 (iternextfunc)ifilter_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3044 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3045 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3046 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3047 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3048 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3049 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3050 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3051 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3052 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3053 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3054 ifilter_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3055 PyObject_GC_Del, /* tp_free */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3056 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3057
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3058
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3059 /* ifilterfalse object ************************************************************/
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3060
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3061 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3062 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3063 PyObject *func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3064 PyObject *it;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3065 } ifilterfalseobject;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3066
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3067 static PyTypeObject ifilterfalse_type;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3068
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3069 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3070 ifilterfalse_new(PyTypeObject type, PyObject args, PyObject *kwds)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3071 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3072 PyObject func, seq;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3073 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3074 ifilterfalseobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3075
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3076 if (type == &ifilterfalse_type &&
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3077 !_PyArg_NoKeywords("ifilterfalse()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3078 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3079
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3080 if (!PyArg_UnpackTuple(args, "ifilterfalse", 2, 2, &func, &seq))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3081 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3082
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3083 /* Get iterator. */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3084 it = PyObject_GetIter(seq);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3085 if (it == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3086 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3087
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3088 /* create ifilterfalseobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3089 lz = (ifilterfalseobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3090 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3091 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3092 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3093 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3094 Py_INCREF(func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3095 lz->func = func;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3096 lz->it = it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3097
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3098 return (PyObject *)lz;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3099 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3100
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3101 static void
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3102 ifilterfalse_dealloc(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3103 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3104 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3105 Py_XDECREF(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3106 Py_XDECREF(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3107 Py_TYPE(lz)->tp_free(lz);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3108 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3109
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3110 static int
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3111 ifilterfalse_traverse(ifilterfalseobject lz, visitproc visit, void arg)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3112 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3113 Py_VISIT(lz->it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3114 Py_VISIT(lz->func);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3115 return 0;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3116 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3117
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3118 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3119 ifilterfalse_next(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3120 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3121 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3122 PyObject *it = lz->it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3123 long ok;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3124 PyObject (iternext)(PyObject *);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3125
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3126 iternext = *Py_TYPE(it)->tp_iternext;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3127 for (;;) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3128 item = iternext(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3129 if (item == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3130 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3131
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3132 if (lz->func == Py_None \|\| lz->func == (PyObject *)&PyBool_Type) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3133 ok = PyObject_IsTrue(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3134 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3135 PyObject *good;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3136 good = PyObject_CallFunctionObjArgs(lz->func,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3137 item, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3138 if (good == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3139 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3140 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3141 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3142 ok = PyObject_IsTrue(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3143 Py_DECREF(good);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3144 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3145 if (!ok)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3146 return item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3147 Py_DECREF(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3148 }
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3149 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3150
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3151 PyDoc_STRVAR(ifilterfalse_doc,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3152 "ifilterfalse(function or None, sequence) --> ifilterfalse object\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3153 \n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3154 Return those items of sequence for which function(item) is false.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3155 If function is None, return the items that are false.");
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	3156
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3157 static PyTypeObject ifilterfalse_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3158 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3159 "itertools.ifilterfalse", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3160 sizeof(ifilterfalseobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3161 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3162 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3163 (destructor)ifilterfalse_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3164 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3165 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3166 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3167 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3168 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3169 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3170 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3171 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3172 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3173 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3174 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3175 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3176 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3177 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3178 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3179 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3180 ifilterfalse_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3181 (traverseproc)ifilterfalse_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3182 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3183 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3184 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3185 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3186 (iternextfunc)ifilterfalse_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3187 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3188 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3189 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3190 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3191 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3192 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3193 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3194 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3195 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3196 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3197 ifilterfalse_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3198 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3199 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3200
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3201
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3202 /* count object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3203
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3204 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3205 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3206 Py_ssize_t cnt;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3207 PyObject *long_cnt;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3208 PyObject *long_step;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3209 } countobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3210
51541 cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3211 /* Counting logic and invariants:
cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3212
51772 3e27d606d625 Fix keyword arguments for itertools.count(). Raymond Hettinger <python@rcn.com> parents: 51718 diff changeset	3213 fast_mode: when cnt an integer < PY_SSIZE_T_MAX and no step is specified.
51541 cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3214
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3215 assert(cnt != PY_SSIZE_T_MAX && long_cnt == NULL && long_step==PyInt(1));
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3216 Advances with: cnt += 1
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3217 When count hits Y_SSIZE_T_MAX, switch to slow_mode.
51772 3e27d606d625 Fix keyword arguments for itertools.count(). Raymond Hettinger <python@rcn.com> parents: 51718 diff changeset	3218
3e27d606d625 Fix keyword arguments for itertools.count(). Raymond Hettinger <python@rcn.com> parents: 51718 diff changeset	3219 slow_mode: when cnt == PY_SSIZE_T_MAX, step is not int(1), or cnt is a float.
51541 cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3220
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3221 assert(cnt == PY_SSIZE_T_MAX && long_cnt != NULL && long_step != NULL);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3222 All counting is done with python objects (no overflows or underflows).
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3223 Advances with: long_cnt += long_step
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3224 Step may be zero -- effectively a slow version of repeat(cnt).
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3225 Either long_cnt or long_step may be a float, Fraction, or Decimal.
51541 cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3226 */
cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3227
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3228 static PyTypeObject count_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3229
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3230 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3231 count_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3232 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3233 countobject *lz;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3234 int slow_mode = 0;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3235 Py_ssize_t cnt = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3236 PyObject *long_cnt = NULL;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3237 PyObject *long_step = NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3238 static char *kwlist[] = {"start", "step", 0};
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3239
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3240 if (!PyArg_ParseTupleAndKeywords(args, kwds, "\|OO:count",
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3241 kwlist, &long_cnt, &long_step))
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3242 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3243
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3244 if ((long_cnt != NULL && !PyNumber_Check(long_cnt)) \|\|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3245 (long_step != NULL && !PyNumber_Check(long_step))) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3246 PyErr_SetString(PyExc_TypeError, "a number is required");
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3247 return NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3248 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3249
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3250 if (long_cnt != NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3251 cnt = PyInt_AsSsize_t(long_cnt);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3252 if ((cnt == -1 && PyErr_Occurred()) \|\| !PyInt_Check(long_cnt)) {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3253 PyErr_Clear();
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3254 slow_mode = 1;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3255 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3256 Py_INCREF(long_cnt);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3257 } else {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3258 cnt = 0;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3259 long_cnt = PyInt_FromLong(0);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3260 }
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3261
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3262 /* If not specified, step defaults to 1 */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3263 if (long_step == NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3264 long_step = PyInt_FromLong(1);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3265 if (long_step == NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3266 Py_DECREF(long_cnt);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3267 return NULL;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3268 }
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3269 } else
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3270 Py_INCREF(long_step);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3271
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3272 assert(long_cnt != NULL && long_step != NULL);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3273
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3274 /* Fast mode only works when the step is 1 */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3275 if (!PyInt_Check(long_step) \|\|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3276 PyInt_AS_LONG(long_step) != 1) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3277 slow_mode = 1;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3278 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3279
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3280 if (slow_mode)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3281 cnt = PY_SSIZE_T_MAX;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3282 else
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3283 Py_CLEAR(long_cnt);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3284
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3285 assert((cnt != PY_SSIZE_T_MAX && long_cnt == NULL && !slow_mode) \|\|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3286 (cnt == PY_SSIZE_T_MAX && long_cnt != NULL && slow_mode));
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3287 assert(slow_mode \|\|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3288 (PyInt_Check(long_step) && PyInt_AS_LONG(long_step) == 1));
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3289
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3290 /* create countobject structure */
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3291 lz = (countobject *)type->tp_alloc(type, 0);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3292 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3293 Py_XDECREF(long_cnt);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3294 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3295 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3296 lz->cnt = cnt;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3297 lz->long_cnt = long_cnt;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3298 lz->long_step = long_step;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3299
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3300 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3301 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3302
43458 333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3303 static void
333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3304 count_dealloc(countobject *lz)
333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3305 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3306 PyObject_GC_UnTrack(lz);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3307 Py_XDECREF(lz->long_cnt);
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3308 Py_XDECREF(lz->long_step);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3309 Py_TYPE(lz)->tp_free(lz);
51660 0ebbcf5988db Add GC support to count() objects. Backport candidate. Raymond Hettinger <python@rcn.com> parents: 51622 diff changeset	3310 }
0ebbcf5988db Add GC support to count() objects. Backport candidate. Raymond Hettinger <python@rcn.com> parents: 51622 diff changeset	3311
51663 27d43d66bd09 fix compiler warnings Benjamin Peterson <benjamin@python.org> parents: 51660 diff changeset	3312 static int
51660 0ebbcf5988db Add GC support to count() objects. Backport candidate. Raymond Hettinger <python@rcn.com> parents: 51622 diff changeset	3313 count_traverse(countobject lz, visitproc visit, void arg)
0ebbcf5988db Add GC support to count() objects. Backport candidate. Raymond Hettinger <python@rcn.com> parents: 51622 diff changeset	3314 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3315 Py_VISIT(lz->long_cnt);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3316 Py_VISIT(lz->long_step);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3317 return 0;
43458 333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3318 }
333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3319
333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3320 static PyObject *
333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3321 count_nextlong(countobject *lz)
333b052e9da9 itertools.count() no longer limited to sys.maxint. Raymond Hettinger <python@rcn.com> parents: 42333 diff changeset	3322 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3323 PyObject *long_cnt;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3324 PyObject *stepped_up;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3325
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3326 long_cnt = lz->long_cnt;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3327 if (long_cnt == NULL) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3328 /* Switch to slow_mode */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3329 long_cnt = PyInt_FromSsize_t(PY_SSIZE_T_MAX);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3330 if (long_cnt == NULL)
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3331 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3332 }
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3333 assert(lz->cnt == PY_SSIZE_T_MAX && long_cnt != NULL);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3334
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3335 stepped_up = PyNumber_Add(long_cnt, lz->long_step);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3336 if (stepped_up == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3337 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3338 lz->long_cnt = stepped_up;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3339 return long_cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3340 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3341
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3342 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3343 count_next(countobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3344 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3345 if (lz->cnt == PY_SSIZE_T_MAX)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3346 return count_nextlong(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3347 return PyInt_FromSsize_t(lz->cnt++);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3348 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3349
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3350 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3351 count_repr(countobject *lz)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3352 {
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3353 PyObject cnt_repr, step_repr = NULL;
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3354 PyObject *result = NULL;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3355
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3356 if (lz->cnt != PY_SSIZE_T_MAX)
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3357 return PyString_FromFormat("count(%zd)", lz->cnt);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3358
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3359 cnt_repr = PyObject_Repr(lz->long_cnt);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3360 if (cnt_repr == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3361 return NULL;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3362
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3363 if (PyInt_Check(lz->long_step) && PyInt_AS_LONG(lz->long_step) == 1) {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3364 /* Don't display step when it is an integer equal to 1 */
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3365 result = PyString_FromFormat("count(%s)",
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3366 PyString_AS_STRING(cnt_repr));
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3367 } else {
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3368 step_repr = PyObject_Repr(lz->long_step);
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3369 if (step_repr != NULL)
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3370 result = PyString_FromFormat("count(%s, %s)",
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3371 PyString_AS_STRING(cnt_repr),
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3372 PyString_AS_STRING(step_repr));
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3373 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3374 Py_DECREF(cnt_repr);
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3375 Py_XDECREF(step_repr);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3376 return result;
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3377 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3378
57517 1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3379 static PyObject *
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3380 count_reduce(countobject *lz)
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3381 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3382 if (lz->cnt == PY_SSIZE_T_MAX)
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3383 return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->long_cnt, lz->long_step);
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3384 return Py_BuildValue("O(n)", Py_TYPE(lz), lz->cnt);
57517 1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3385 }
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3386
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3387 PyDoc_STRVAR(count_reduce_doc, "Return state information for pickling.");
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3388
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3389 static PyMethodDef count_methods[] = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3390 {"__reduce__", (PyCFunction)count_reduce, METH_NOARGS,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3391 count_reduce_doc},
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3392 {NULL, NULL} /* sentinel */
57517 1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3393 };
1ff2c3edc13c Issue #7410: deepcopy of itertools.count() erroneously reset the count. Raymond Hettinger <python@rcn.com> parents: 57345 diff changeset	3394
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3395 PyDoc_STRVAR(count_doc,
62237 7ef46a61dc97 Remove extra ] from itertools.count docstring. Ezio Melotti <ezio.melotti@gmail.com> parents: 61463 diff changeset	3396 "count(start=0, step=1) --> count object\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3397 \n\
51772 3e27d606d625 Fix keyword arguments for itertools.count(). Raymond Hettinger <python@rcn.com> parents: 51718 diff changeset	3398 Return a count object whose .next() method returns consecutive values.\n\
3e27d606d625 Fix keyword arguments for itertools.count(). Raymond Hettinger <python@rcn.com> parents: 51718 diff changeset	3399 Equivalent to:\n\n\
51541 cbd53ff49557 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments. Raymond Hettinger <python@rcn.com> parents: 51486 diff changeset	3400 def count(firstval=0, step=1):\n\
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3401 x = firstval\n\
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3402 while 1:\n\
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3403 yield x\n\
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3404 x += step\n");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3405
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3406 static PyTypeObject count_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3407 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3408 "itertools.count", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3409 sizeof(countobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3410 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3411 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3412 (destructor)count_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3413 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3414 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3415 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3416 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3417 (reprfunc)count_repr, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3418 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3419 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3420 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3421 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3422 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3423 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3424 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3425 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3426 0, /* tp_as_buffer */
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3427 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3428 Py_TPFLAGS_BASETYPE, /* tp_flags */
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3429 count_doc, /* tp_doc */
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3430 (traverseproc)count_traverse, /* tp_traverse */
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3431 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3432 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3433 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3434 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3435 (iternextfunc)count_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3436 count_methods, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3437 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3438 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3439 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3440 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3441 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3442 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3443 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3444 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3445 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3446 count_new, /* tp_new */
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3447 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3448 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3449
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3450
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3451 /* izip object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3452
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3453 #include "Python.h"
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3454
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3455 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3456 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3457 Py_ssize_t tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3458 PyObject ittuple; / tuple of iterators */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3459 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3460 } izipobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3461
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3462 static PyTypeObject izip_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3463
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3464 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3465 izip_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3466 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3467 izipobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3468 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3469 PyObject ittuple; / tuple of iterators */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3470 PyObject *result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3471 Py_ssize_t tuplesize = PySequence_Length(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3472
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3473 if (type == &izip_type && !_PyArg_NoKeywords("izip()", kwds))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3474 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3475
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3476 /* args must be a tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3477 assert(PyTuple_Check(args));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3478
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3479 /* obtain iterators */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3480 ittuple = PyTuple_New(tuplesize);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3481 if (ittuple == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3482 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3483 for (i=0; i < tuplesize; ++i) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3484 PyObject *item = PyTuple_GET_ITEM(args, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3485 PyObject *it = PyObject_GetIter(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3486 if (it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3487 if (PyErr_ExceptionMatches(PyExc_TypeError))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3488 PyErr_Format(PyExc_TypeError,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3489 "izip argument #%zd must support iteration",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3490 i+1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3491 Py_DECREF(ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3492 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3493 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3494 PyTuple_SET_ITEM(ittuple, i, it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3495 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3496
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3497 /* create a result holder */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3498 result = PyTuple_New(tuplesize);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3499 if (result == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3500 Py_DECREF(ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3501 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3502 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3503 for (i=0 ; i < tuplesize ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3504 Py_INCREF(Py_None);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3505 PyTuple_SET_ITEM(result, i, Py_None);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3506 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3507
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3508 /* create izipobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3509 lz = (izipobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3510 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3511 Py_DECREF(ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3512 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3513 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3514 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3515 lz->ittuple = ittuple;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3516 lz->tuplesize = tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3517 lz->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3518
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3519 return (PyObject *)lz;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3520 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3521
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3522 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3523 izip_dealloc(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3524 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3525 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3526 Py_XDECREF(lz->ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3527 Py_XDECREF(lz->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3528 Py_TYPE(lz)->tp_free(lz);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3529 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3530
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3531 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3532 izip_traverse(izipobject lz, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3533 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3534 Py_VISIT(lz->ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3535 Py_VISIT(lz->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3536 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3537 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3538
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3539 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3540 izip_next(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3541 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3542 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3543 Py_ssize_t tuplesize = lz->tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3544 PyObject *result = lz->result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3545 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3546 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3547 PyObject *olditem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3548
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3549 if (tuplesize == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3550 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3551 if (Py_REFCNT(result) == 1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3552 Py_INCREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3553 for (i=0 ; i < tuplesize ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3554 it = PyTuple_GET_ITEM(lz->ittuple, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3555 item = (*Py_TYPE(it)->tp_iternext)(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3556 if (item == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3557 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3558 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3559 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3560 olditem = PyTuple_GET_ITEM(result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3561 PyTuple_SET_ITEM(result, i, item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3562 Py_DECREF(olditem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3563 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3564 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3565 result = PyTuple_New(tuplesize);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3566 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3567 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3568 for (i=0 ; i < tuplesize ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3569 it = PyTuple_GET_ITEM(lz->ittuple, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3570 item = (*Py_TYPE(it)->tp_iternext)(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3571 if (item == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3572 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3573 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3574 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3575 PyTuple_SET_ITEM(result, i, item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3576 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3577 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3578 return result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3579 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3580
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3581 PyDoc_STRVAR(izip_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3582 "izip(iter1 [,iter2 [...]]) --> izip object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3583 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3584 Return a izip object whose .next() method returns a tuple where\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3585 the i-th element comes from the i-th iterable argument. The .next()\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3586 method continues until the shortest iterable in the argument sequence\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3587 is exhausted and then it raises StopIteration. Works like the zip()\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3588 function but consumes less memory by returning an iterator instead of\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3589 a list.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3590
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3591 static PyTypeObject izip_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3592 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3593 "itertools.izip", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3594 sizeof(izipobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3595 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3596 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3597 (destructor)izip_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3598 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3599 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3600 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3601 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3602 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3603 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3604 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3605 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3606 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3607 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3608 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3609 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3610 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3611 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3612 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3613 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3614 izip_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3615 (traverseproc)izip_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3616 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3617 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3618 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3619 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3620 (iternextfunc)izip_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3621 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3622 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3623 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3624 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3625 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3626 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3627 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3628 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3629 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3630 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3631 izip_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3632 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3633 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3634
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3635
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3636 /* repeat object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3637
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3638 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3639 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3640 PyObject *element;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3641 Py_ssize_t cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3642 } repeatobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3643
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3644 static PyTypeObject repeat_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3645
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3646 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3647 repeat_new(PyTypeObject type, PyObject args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3648 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3649 repeatobject *ro;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3650 PyObject *element;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3651 Py_ssize_t cnt = -1;
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3652 static char *kwargs[] = {"object", "times", NULL};
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3653
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3654 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O\|n:repeat", kwargs,
fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	3655 &element, &cnt))
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3656 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3657
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3658 if (PyTuple_Size(args) == 2 && cnt < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3659 cnt = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3660
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3661 ro = (repeatobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3662 if (ro == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3663 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3664 Py_INCREF(element);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3665 ro->element = element;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3666 ro->cnt = cnt;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3667 return (PyObject *)ro;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3668 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3669
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3670 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3671 repeat_dealloc(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3672 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3673 PyObject_GC_UnTrack(ro);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3674 Py_XDECREF(ro->element);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3675 Py_TYPE(ro)->tp_free(ro);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3676 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3677
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3678 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3679 repeat_traverse(repeatobject ro, visitproc visit, void arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3680 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3681 Py_VISIT(ro->element);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3682 return 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3683 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3684
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3685 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3686 repeat_next(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3687 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3688 if (ro->cnt == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3689 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3690 if (ro->cnt > 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3691 ro->cnt--;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3692 Py_INCREF(ro->element);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3693 return ro->element;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3694 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3695
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3696 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3697 repeat_repr(repeatobject *ro)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3698 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3699 PyObject result, objrepr;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3700
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3701 objrepr = PyObject_Repr(ro->element);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3702 if (objrepr == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3703 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3704
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3705 if (ro->cnt == -1)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3706 result = PyString_FromFormat("repeat(%s)",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3707 PyString_AS_STRING(objrepr));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3708 else
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3709 result = PyString_FromFormat("repeat(%s, %zd)",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3710 PyString_AS_STRING(objrepr), ro->cnt);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3711 Py_DECREF(objrepr);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3712 return result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3713 }
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	3714
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	3715 static PyObject *
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	3716 repeat_len(repeatobject *ro)
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	3717 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3718 if (ro->cnt == -1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3719 PyErr_SetString(PyExc_TypeError, "len() of unsized object");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3720 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3721 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3722 return PyInt_FromSize_t(ro->cnt);
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	3723 }
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	3724
36484 20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See: Armin Rigo <arigo@tunes.org> parents: 36324 diff changeset	3725 PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	3726
e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	3727 static PyMethodDef repeat_methods[] = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3728 {"__length_hint__", (PyCFunction)repeat_len, METH_NOARGS, length_hint_doc},
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3729 {NULL, NULL} /* sentinel */
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	3730 };
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	3731
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3732 PyDoc_STRVAR(repeat_doc,
51718 d25fc0209295 Add keyword arg support to itertools.repeat(). Raymond Hettinger <python@rcn.com> parents: 51715 diff changeset	3733 "repeat(object [,times]) -> create an iterator which returns the object\n\
d25fc0209295 Add keyword arg support to itertools.repeat(). Raymond Hettinger <python@rcn.com> parents: 51715 diff changeset	3734 for the specified number of times. If not specified, returns the object\n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	3735 endlessly.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3736
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	3737 static PyTypeObject repeat_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3738 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3739 "itertools.repeat", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3740 sizeof(repeatobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3741 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3742 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3743 (destructor)repeat_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3744 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3745 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3746 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3747 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3748 (reprfunc)repeat_repr, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3749 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3750 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3751 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3752 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3753 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3754 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3755 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3756 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3757 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3758 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3759 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3760 repeat_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3761 (traverseproc)repeat_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3762 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3763 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3764 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3765 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3766 (iternextfunc)repeat_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3767 repeat_methods, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3768 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3769 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3770 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3771 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3772 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3773 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3774 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3775 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3776 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3777 repeat_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3778 PyObject_GC_Del, /* tp_free */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3779 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3780
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3781 /* iziplongest object ************************************************************/
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3782
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3783 #include "Python.h"
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3784
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3785 typedef struct {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3786 PyObject_HEAD
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3787 Py_ssize_t tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3788 Py_ssize_t numactive;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3789 PyObject ittuple; / tuple of iterators */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3790 PyObject *result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3791 PyObject *fillvalue;
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3792 } iziplongestobject;
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3793
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3794 static PyTypeObject iziplongest_type;
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3795
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3796 static PyObject *
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3797 izip_longest_new(PyTypeObject type, PyObject args, PyObject *kwds)
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3798 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3799 iziplongestobject *lz;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3800 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3801 PyObject ittuple; / tuple of iterators */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3802 PyObject *result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3803 PyObject *fillvalue = Py_None;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3804 Py_ssize_t tuplesize = PySequence_Length(args);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3805
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3806 if (kwds != NULL && PyDict_CheckExact(kwds) && PyDict_Size(kwds) > 0) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3807 fillvalue = PyDict_GetItemString(kwds, "fillvalue");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3808 if (fillvalue == NULL \|\| PyDict_Size(kwds) > 1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3809 PyErr_SetString(PyExc_TypeError,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3810 "izip_longest() got an unexpected keyword argument");
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3811 return NULL;
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3812 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3813 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3814
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3815 /* args must be a tuple */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3816 assert(PyTuple_Check(args));
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3817
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3818 /* obtain iterators */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3819 ittuple = PyTuple_New(tuplesize);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3820 if (ittuple == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3821 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3822 for (i=0; i < tuplesize; ++i) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3823 PyObject *item = PyTuple_GET_ITEM(args, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3824 PyObject *it = PyObject_GetIter(item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3825 if (it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3826 if (PyErr_ExceptionMatches(PyExc_TypeError))
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3827 PyErr_Format(PyExc_TypeError,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3828 "izip_longest argument #%zd must support iteration",
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3829 i+1);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3830 Py_DECREF(ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3831 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3832 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3833 PyTuple_SET_ITEM(ittuple, i, it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3834 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3835
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3836 /* create a result holder */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3837 result = PyTuple_New(tuplesize);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3838 if (result == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3839 Py_DECREF(ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3840 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3841 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3842 for (i=0 ; i < tuplesize ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3843 Py_INCREF(Py_None);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3844 PyTuple_SET_ITEM(result, i, Py_None);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3845 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3846
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3847 /* create iziplongestobject structure */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3848 lz = (iziplongestobject *)type->tp_alloc(type, 0);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3849 if (lz == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3850 Py_DECREF(ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3851 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3852 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3853 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3854 lz->ittuple = ittuple;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3855 lz->tuplesize = tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3856 lz->numactive = tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3857 lz->result = result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3858 Py_INCREF(fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3859 lz->fillvalue = fillvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3860 return (PyObject *)lz;
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3861 }
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3862
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3863 static void
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3864 izip_longest_dealloc(iziplongestobject *lz)
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3865 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3866 PyObject_GC_UnTrack(lz);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3867 Py_XDECREF(lz->ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3868 Py_XDECREF(lz->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3869 Py_XDECREF(lz->fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3870 Py_TYPE(lz)->tp_free(lz);
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3871 }
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3872
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3873 static int
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3874 izip_longest_traverse(iziplongestobject lz, visitproc visit, void arg)
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3875 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3876 Py_VISIT(lz->ittuple);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3877 Py_VISIT(lz->result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3878 Py_VISIT(lz->fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3879 return 0;
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3880 }
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3881
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3882 static PyObject *
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3883 izip_longest_next(iziplongestobject *lz)
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3884 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3885 Py_ssize_t i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3886 Py_ssize_t tuplesize = lz->tuplesize;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3887 PyObject *result = lz->result;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3888 PyObject *it;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3889 PyObject *item;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3890 PyObject *olditem;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3891
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3892 if (tuplesize == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3893 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3894 if (lz->numactive == 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3895 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3896 if (Py_REFCNT(result) == 1) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3897 Py_INCREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3898 for (i=0 ; i < tuplesize ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3899 it = PyTuple_GET_ITEM(lz->ittuple, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3900 if (it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3901 Py_INCREF(lz->fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3902 item = lz->fillvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3903 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3904 item = PyIter_Next(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3905 if (item == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3906 lz->numactive -= 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3907 if (lz->numactive == 0 \|\| PyErr_Occurred()) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3908 lz->numactive = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3909 Py_DECREF(result);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3910 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3911 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3912 Py_INCREF(lz->fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3913 item = lz->fillvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3914 PyTuple_SET_ITEM(lz->ittuple, i, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3915 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3916 }
57033 ed166ff7d952 Issue 7244: Fix indentation in C code. Fix test to not sent output to stdout. Raymond Hettinger <python@rcn.com> parents: 57022 diff changeset	3917 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3918 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3919 olditem = PyTuple_GET_ITEM(result, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3920 PyTuple_SET_ITEM(result, i, item);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3921 Py_DECREF(olditem);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3922 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3923 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3924 result = PyTuple_New(tuplesize);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3925 if (result == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3926 return NULL;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3927 for (i=0 ; i < tuplesize ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3928 it = PyTuple_GET_ITEM(lz->ittuple, i);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3929 if (it == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3930 Py_INCREF(lz->fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3931 item = lz->fillvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3932 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3933 item = PyIter_Next(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3934 if (item == NULL) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3935 lz->numactive -= 1;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3936 if (lz->numactive == 0 \|\| PyErr_Occurred()) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3937 lz->numactive = 0;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3938 Py_DECREF(result);
57033 ed166ff7d952 Issue 7244: Fix indentation in C code. Fix test to not sent output to stdout. Raymond Hettinger <python@rcn.com> parents: 57022 diff changeset	3939 return NULL;
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3940 } else {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3941 Py_INCREF(lz->fillvalue);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3942 item = lz->fillvalue;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3943 PyTuple_SET_ITEM(lz->ittuple, i, NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3944 Py_DECREF(it);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3945 }
57033 ed166ff7d952 Issue 7244: Fix indentation in C code. Fix test to not sent output to stdout. Raymond Hettinger <python@rcn.com> parents: 57022 diff changeset	3946 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3947 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3948 PyTuple_SET_ITEM(result, i, item);
57036 da6ad98d5dae Fix space/tabs issue. Raymond Hettinger <python@rcn.com> parents: 57033 diff changeset	3949 }
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3950 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3951 return result;
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3952 }
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3953
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3954 PyDoc_STRVAR(izip_longest_doc,
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3955 "izip_longest(iter1 [,iter2 [...]], [fillvalue=None]) --> izip_longest object\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3956 \n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3957 Return an izip_longest object whose .next() method returns a tuple where\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3958 the i-th element comes from the i-th iterable argument. The .next()\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3959 method continues until the longest iterable in the argument sequence\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3960 is exhausted and then it raises StopIteration. When the shorter iterables\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3961 are exhausted, the fillvalue is substituted in their place. The fillvalue\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3962 defaults to None or can be specified by a keyword argument.\n\
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3963 ");
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3964
6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	3965 static PyTypeObject iziplongest_type = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3966 PyVarObject_HEAD_INIT(NULL, 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3967 "itertools.izip_longest", /* tp_name */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3968 sizeof(iziplongestobject), /* tp_basicsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3969 0, /* tp_itemsize */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3970 /* methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3971 (destructor)izip_longest_dealloc, /* tp_dealloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3972 0, /* tp_print */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3973 0, /* tp_getattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3974 0, /* tp_setattr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3975 0, /* tp_compare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3976 0, /* tp_repr */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3977 0, /* tp_as_number */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3978 0, /* tp_as_sequence */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3979 0, /* tp_as_mapping */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3980 0, /* tp_hash */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3981 0, /* tp_call */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3982 0, /* tp_str */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3983 PyObject_GenericGetAttr, /* tp_getattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3984 0, /* tp_setattro */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3985 0, /* tp_as_buffer */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3986 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3987 Py_TPFLAGS_BASETYPE, /* tp_flags */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3988 izip_longest_doc, /* tp_doc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3989 (traverseproc)izip_longest_traverse, /* tp_traverse */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3990 0, /* tp_clear */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3991 0, /* tp_richcompare */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3992 0, /* tp_weaklistoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3993 PyObject_SelfIter, /* tp_iter */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3994 (iternextfunc)izip_longest_next, /* tp_iternext */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3995 0, /* tp_methods */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3996 0, /* tp_members */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3997 0, /* tp_getset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3998 0, /* tp_base */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	3999 0, /* tp_dict */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4000 0, /* tp_descr_get */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4001 0, /* tp_descr_set */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4002 0, /* tp_dictoffset */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4003 0, /* tp_init */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4004 0, /* tp_alloc */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4005 izip_longest_new, /* tp_new */
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4006 PyObject_GC_Del, /* tp_free */
40877 6fa0d682e1e5 Add itertools.izip_longest(). Raymond Hettinger <python@rcn.com> parents: 40766 diff changeset	4007 };
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4008
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4009 /* module level code ********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4010
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4011 PyDoc_STRVAR(module_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4012 "Functional tools for creating and using iterators.\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4013 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4014 Infinite iterators:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4015 count([n]) --> n, n+1, n+2, ...\n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	4016 cycle(p) --> p0, p1, ... plast, p0, p1, ...\n\
28601 58db5fbd9c28 Fix docstring typo Andrew M. Kuchling <amk@amk.ca> parents: 28320 diff changeset	4017 repeat(elem [,n]) --> elem, elem, elem, ... endlessly or up to n times\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4018 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4019 Iterators terminating on the shortest input sequence:\n\
51162 07ff281be02c Update itertools.__doc__ to include all tools. Raymond Hettinger <python@rcn.com> parents: 51097 diff changeset	4020 chain(p, q, ...) --> p0, p1, ... plast, q0, q1, ... \n\
51164 7cb351c9cf40 Fix typo. Raymond Hettinger <python@rcn.com> parents: 51162 diff changeset	4021 compress(data, selectors) --> (d[0] if s[0]), (d[1] if s[1]), ...\n\
51162 07ff281be02c Update itertools.__doc__ to include all tools. Raymond Hettinger <python@rcn.com> parents: 51097 diff changeset	4022 dropwhile(pred, seq) --> seq[n], seq[n+1], starting when pred fails\n\
07ff281be02c Update itertools.__doc__ to include all tools. Raymond Hettinger <python@rcn.com> parents: 51097 diff changeset	4023 groupby(iterable[, keyfunc]) --> sub-iterators grouped by value of keyfunc(v)\n\
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	4024 ifilter(pred, seq) --> elements of seq where pred(elem) is True\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	4025 ifilterfalse(pred, seq) --> elements of seq where pred(elem) is False\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4026 islice(seq, [start,] stop [, step]) --> elements from\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4027 seq[start:stop:step]\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4028 imap(fun, p, q, ...) --> fun(p0, q0), fun(p1, q1), ...\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4029 starmap(fun, seq) --> fun(seq[0]), fun(seq[1]), ...\n\
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	4030 tee(it, n=2) --> (it1, it2 , ... itn) splits one iterator into n\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4031 takewhile(pred, seq) --> seq[0], seq[1], until pred fails\n\
51162 07ff281be02c Update itertools.__doc__ to include all tools. Raymond Hettinger <python@rcn.com> parents: 51097 diff changeset	4032 izip(p, q, ...) --> (p[0], q[0]), (p[1], q[1]), ... \n\
07ff281be02c Update itertools.__doc__ to include all tools. Raymond Hettinger <python@rcn.com> parents: 51097 diff changeset	4033 izip_longest(p, q, ...) --> (p[0], q[0]), (p[1], q[1]), ... \n\
57345 f73d137cfbd0 Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57036 diff changeset	4034 \n\
f73d137cfbd0 Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57036 diff changeset	4035 Combinatoric generators:\n\
f73d137cfbd0 Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57036 diff changeset	4036 product(p, q, ... [repeat=1]) --> cartesian product\n\
f73d137cfbd0 Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57036 diff changeset	4037 permutations(p[, r])\n\
f73d137cfbd0 Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57036 diff changeset	4038 combinations(p, r)\n\
57343 f152667200ae Fix docstrings for itertools combinatoric functions. Raymond Hettinger <python@rcn.com> parents: 57040 diff changeset	4039 combinations_with_replacement(p, r)\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4040 ");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4041
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4042
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	4043 static PyMethodDef module_methods[] = {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4044 {"tee", (PyCFunction)tee, METH_VARARGS, tee_doc},
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4045 {NULL, NULL} /* sentinel */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	4046 };
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	4047
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4048 PyMODINIT_FUNC
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4049 inititertools(void)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4050 {
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4051 int i;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4052 PyObject *m;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4053 char *name;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4054 PyTypeObject *typelist[] = {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4055 &combinations_type,
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	4056 &cwr_type,
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4057 &cycle_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4058 &dropwhile_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4059 &takewhile_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4060 &islice_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4061 &starmap_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4062 &imap_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4063 &chain_type,
61463 fd25030223b0 Untabify C files. Will watch buildbots. Antoine Pitrou <solipsis@pitrou.net> parents: 57519 diff changeset	4064 &compress_type,
61465 e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4065 &ifilter_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4066 &ifilterfalse_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4067 &count_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4068 &izip_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4069 &iziplongest_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4070 &permutations_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4071 &product_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4072 &repeat_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4073 &groupby_type,
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4074 NULL
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4075 };
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4076
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4077 Py_TYPE(&teedataobject_type) = &PyType_Type;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4078 m = Py_InitModule3("itertools", module_methods, module_doc);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4079 if (m == NULL)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4080 return;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4081
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4082 for (i=0 ; typelist[i] != NULL ; i++) {
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4083 if (PyType_Ready(typelist[i]) < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4084 return;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4085 name = strchr(typelist[i]->tp_name, '.');
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4086 assert (name != NULL);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4087 Py_INCREF(typelist[i]);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4088 PyModule_AddObject(m, name+1, (PyObject *)typelist[i]);
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4089 }
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4090
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4091 if (PyType_Ready(&teedataobject_type) < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4092 return;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4093 if (PyType_Ready(&tee_type) < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4094 return;
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4095 if (PyType_Ready(&_grouper_type) < 0)
e38335d4df91 Recorded merge of revisions 81029 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 57521 diff changeset	4096 return;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4097 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/itertoolsmodule.c @ 71583:cdff35544530 2.7