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

annotate Modules/itertoolsmodule.c @ 39496:352ffe77b71d legacy-trunk

Patch #1535500: fix segfault in BZ2File.writelines and make sure it raises the correct exceptions.

author	Georg Brandl <georg@python.org>
date	Mon, 14 Aug 2006 21:42:55 +0000
parents	e9773fc27e9b
children	1352ad9afcc0

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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	5 /* Itertools module written and maintained
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 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	15 PyObject_HEAD
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	16 PyObject *it;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	17 PyObject *keyfunc;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	18 PyObject *tgtkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	19 PyObject *currkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	20 PyObject *currvalue;
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 {
36684 0bebeb393045 More unconsting. Martin v. Löwis <martin@v.loewis.de> parents: 36518 diff changeset	29 static char *kwargs[] = {"iterable", "key", NULL};
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	30 groupbyobject *gbo;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	31 PyObject it, keyfunc = Py_None;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	32
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	33 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O\|O:groupby", kwargs,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	34 &it, &keyfunc))
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	35 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	36
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	37 gbo = (groupbyobject *)type->tp_alloc(type, 0);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	38 if (gbo == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	39 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	40 gbo->tgtkey = NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	41 gbo->currkey = NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	42 gbo->currvalue = NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	43 gbo->keyfunc = keyfunc;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	44 Py_INCREF(keyfunc);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	45 gbo->it = PyObject_GetIter(it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	46 if (gbo->it == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	47 Py_DECREF(gbo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	48 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	49 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	50 return (PyObject *)gbo;
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 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	56 PyObject_GC_UnTrack(gbo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	57 Py_XDECREF(gbo->it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	58 Py_XDECREF(gbo->keyfunc);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	59 Py_XDECREF(gbo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	60 Py_XDECREF(gbo->currkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	61 Py_XDECREF(gbo->currvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	62 gbo->ob_type->tp_free(gbo);
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 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	68 Py_VISIT(gbo->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	69 Py_VISIT(gbo->keyfunc);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	70 Py_VISIT(gbo->tgtkey);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	71 Py_VISIT(gbo->currkey);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	72 Py_VISIT(gbo->currvalue);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	73 return 0;
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 {
33616 31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	79 PyObject newvalue, newkey, r, grouper, *tmp;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	80
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	81 /* skip to next iteration group */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	82 for (;;) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	83 if (gbo->currkey == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	84 /* pass */;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	85 else if (gbo->tgtkey == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	86 break;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	87 else {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	88 int rcmp;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	89
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	90 rcmp = PyObject_RichCompareBool(gbo->tgtkey,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	91 gbo->currkey, Py_EQ);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	92 if (rcmp == -1)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	93 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	94 else if (rcmp == 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	95 break;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	96 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	97
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	98 newvalue = PyIter_Next(gbo->it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	99 if (newvalue == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	100 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	101
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	102 if (gbo->keyfunc == Py_None) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	103 newkey = newvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	104 Py_INCREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	105 } else {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	106 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	107 newvalue, NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	108 if (newkey == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	109 Py_DECREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	110 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	111 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	112 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	113
33616 31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	114 tmp = gbo->currkey;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	115 gbo->currkey = newkey;
33616 31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	116 Py_XDECREF(tmp);
31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	117
31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	118 tmp = gbo->currvalue;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	119 gbo->currvalue = newvalue;
33616 31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	120 Py_XDECREF(tmp);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	121 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	122
33616 31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	123 Py_INCREF(gbo->currkey);
31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	124 tmp = gbo->tgtkey;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	125 gbo->tgtkey = gbo->currkey;
33616 31b08670ebdd * Increase test coverage. Raymond Hettinger <python@rcn.com> parents: 33386 diff changeset	126 Py_XDECREF(tmp);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	127
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	128 grouper = _grouper_create(gbo, gbo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	129 if (grouper == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	130 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	131
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	132 r = PyTuple_Pack(2, gbo->currkey, grouper);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	133 Py_DECREF(grouper);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	134 return r;
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 = {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	142 PyObject_HEAD_INIT(NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	143 0, /* ob_size */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	144 "itertools.groupby", /* tp_name */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	145 sizeof(groupbyobject), /* tp_basicsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	146 0, /* tp_itemsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	147 /* methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	148 (destructor)groupby_dealloc, /* tp_dealloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	149 0, /* tp_print */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	150 0, /* tp_getattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	151 0, /* tp_setattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	152 0, /* tp_compare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	153 0, /* tp_repr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	154 0, /* tp_as_number */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	155 0, /* tp_as_sequence */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	156 0, /* tp_as_mapping */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	157 0, /* tp_hash */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	158 0, /* tp_call */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	159 0, /* tp_str */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	160 PyObject_GenericGetAttr, /* tp_getattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	161 0, /* tp_setattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	162 0, /* tp_as_buffer */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	163 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	164 Py_TPFLAGS_BASETYPE, /* tp_flags */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	165 groupby_doc, /* tp_doc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	166 (traverseproc)groupby_traverse, /* tp_traverse */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	167 0, /* tp_clear */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	168 0, /* tp_richcompare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	169 0, /* tp_weaklistoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	170 PyObject_SelfIter, /* tp_iter */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	171 (iternextfunc)groupby_next, /* tp_iternext */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	172 0, /* tp_methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	173 0, /* tp_members */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	174 0, /* tp_getset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	175 0, /* tp_base */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	176 0, /* tp_dict */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	177 0, /* tp_descr_get */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	178 0, /* tp_descr_set */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	179 0, /* tp_dictoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	180 0, /* tp_init */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	181 0, /* tp_alloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	182 groupby_new, /* tp_new */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	183 PyObject_GC_Del, /* tp_free */
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
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	187 /* _grouper object (internal) ************************************************/
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	188
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	189 typedef struct {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	190 PyObject_HEAD
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	191 PyObject *parent;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	192 PyObject *tgtkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	193 } _grouperobject;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	194
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	195 static PyTypeObject _grouper_type;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	196
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	197 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	198 _grouper_create(groupbyobject parent, PyObject tgtkey)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	199 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	200 _grouperobject *igo;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	201
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	202 igo = PyObject_New(_grouperobject, &_grouper_type);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	203 if (igo == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	204 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	205 igo->parent = (PyObject *)parent;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	206 Py_INCREF(parent);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	207 igo->tgtkey = tgtkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	208 Py_INCREF(tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	209
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	210 return (PyObject *)igo;
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 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	216 Py_DECREF(igo->parent);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	217 Py_DECREF(igo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	218 PyObject_Del(igo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	219 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	220
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	221 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	222 _grouper_next(_grouperobject *igo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	223 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	224 groupbyobject gbo = (groupbyobject )igo->parent;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	225 PyObject newvalue, newkey, *r;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	226 int rcmp;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	227
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	228 if (gbo->currvalue == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	229 newvalue = PyIter_Next(gbo->it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	230 if (newvalue == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	231 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	232
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	233 if (gbo->keyfunc == Py_None) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	234 newkey = newvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	235 Py_INCREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	236 } else {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	237 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	238 newvalue, NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	239 if (newkey == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	240 Py_DECREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	241 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	242 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	243 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	244
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	245 assert(gbo->currkey == NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	246 gbo->currkey = newkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	247 gbo->currvalue = newvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	248 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	249
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	250 assert(gbo->currkey != NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	251 rcmp = PyObject_RichCompareBool(igo->tgtkey, gbo->currkey, Py_EQ);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	252 if (rcmp <= 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	253 /* got any error or current group is end */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	254 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	255
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	256 r = gbo->currvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	257 gbo->currvalue = NULL;
33386 c2c49ee727d0 SF patch #1020188: Use Py_CLEAR where necessary to avoid crashes Raymond Hettinger <python@rcn.com> parents: 32682 diff changeset	258 Py_CLEAR(gbo->currkey);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	259
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	260 return r;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	261 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	262
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	263 static PyTypeObject _grouper_type = {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	264 PyObject_HEAD_INIT(NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	265 0, /* ob_size */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	266 "itertools._grouper", /* tp_name */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	267 sizeof(_grouperobject), /* tp_basicsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	268 0, /* tp_itemsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	269 /* methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	270 (destructor)_grouper_dealloc, /* tp_dealloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	271 0, /* tp_print */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	272 0, /* tp_getattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	273 0, /* tp_setattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	274 0, /* tp_compare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	275 0, /* tp_repr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	276 0, /* tp_as_number */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	277 0, /* tp_as_sequence */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	278 0, /* tp_as_mapping */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	279 0, /* tp_hash */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	280 0, /* tp_call */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	281 0, /* tp_str */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	282 PyObject_GenericGetAttr, /* tp_getattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	283 0, /* tp_setattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	284 0, /* tp_as_buffer */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	285 Py_TPFLAGS_DEFAULT, /* tp_flags */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	286 0, /* tp_doc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	287 0, /* tp_traverse */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	288 0, /* tp_clear */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	289 0, /* tp_richcompare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	290 0, /* tp_weaklistoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	291 PyObject_SelfIter, /* tp_iter */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	292 (iternextfunc)_grouper_next, /* tp_iternext */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	293 0, /* tp_methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	294 0, /* tp_members */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	295 0, /* tp_getset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	296 0, /* tp_base */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	297 0, /* tp_dict */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	298 0, /* tp_descr_get */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	299 0, /* tp_descr_set */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	300 0, /* tp_dictoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	301 0, /* tp_init */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	302 0, /* tp_alloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	303 0, /* tp_new */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	304 PyObject_Del, /* tp_free */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	305 };
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	306
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	307
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	308
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	309 /* tee object and with supporting function and objects ***************/
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	310
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	311 /* 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	312 To help the object fit neatly inside cache lines (space for 16 to 32
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	313 pointers), the value should be a multiple of 16 minus space for
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	314 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	315 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	316 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	317 wasted space and the more rapid freeing of older data.
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 #define LINKCELLS 57
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	320
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	321 typedef struct {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	322 PyObject_HEAD
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	323 PyObject *it;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	324 int numread;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	325 PyObject *nextlink;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	326 PyObject *(values[LINKCELLS]);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	327 } teedataobject;
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 {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	330 PyObject_HEAD
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	331 teedataobject *dataobj;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	332 int index;
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	333 PyObject *weakreflist;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	334 } teeobject;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	335
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	336 static PyTypeObject teedataobject_type;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	337
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	338 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	339 teedataobject_new(PyObject *it)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	340 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	341 teedataobject *tdo;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	342
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	343 tdo = PyObject_GC_New(teedataobject, &teedataobject_type);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	344 if (tdo == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	345 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	346
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	347 tdo->numread = 0;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	348 tdo->nextlink = NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	349 Py_INCREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	350 tdo->it = it;
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	351 PyObject_GC_Track(tdo);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	352 return (PyObject *)tdo;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	353 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	354
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	355 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	356 teedataobject_jumplink(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	357 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	358 if (tdo->nextlink == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	359 tdo->nextlink = teedataobject_new(tdo->it);
39144 e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	360 Py_XINCREF(tdo->nextlink);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	361 return tdo->nextlink;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	362 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	363
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	364 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	365 teedataobject_getitem(teedataobject *tdo, int i)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	366 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	367 PyObject *value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	368
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	369 assert(i < LINKCELLS);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	370 if (i < tdo->numread)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	371 value = tdo->values[i];
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	372 else {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	373 /* this is the lead iterator, so fetch more data */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	374 assert(i == tdo->numread);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	375 value = PyIter_Next(tdo->it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	376 if (value == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	377 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	378 tdo->numread++;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	379 tdo->values[i] = value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	380 }
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	381 Py_INCREF(value);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	382 return value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	383 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	384
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	385 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	386 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	387 {
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	388 int i;
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	389 Py_VISIT(tdo->it);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	390 for (i = 0; i < tdo->numread; i++)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	391 Py_VISIT(tdo->values[i]);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	392 Py_VISIT(tdo->nextlink);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	393 return 0;
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	394 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	395
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	396 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	397 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	398 {
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	399 int i;
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	400 Py_CLEAR(tdo->it);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	401 for (i=0 ; i<tdo->numread ; i++)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	402 Py_CLEAR(tdo->values[i]);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	403 Py_CLEAR(tdo->nextlink);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	404 return 0;
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	405 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	406
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	407 static void
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	408 teedataobject_dealloc(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	409 {
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	410 PyObject_GC_UnTrack(tdo);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	411 teedataobject_clear(tdo);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	412 PyObject_GC_Del(tdo);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	413 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	414
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	415 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	416
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	417 static PyTypeObject teedataobject_type = {
31508 71864820402d need to initialize ob_type slot at run-time, at least on cygwin Skip Montanaro <skip@pobox.com> parents: 31501 diff changeset	418 PyObject_HEAD_INIT(0) /* Must fill in type value later */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	419 0, /* ob_size */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	420 "itertools.tee_dataobject", /* tp_name */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	421 sizeof(teedataobject), /* tp_basicsize */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	422 0, /* tp_itemsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	423 /* methods */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	424 (destructor)teedataobject_dealloc, /* tp_dealloc */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	425 0, /* tp_print */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	426 0, /* tp_getattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	427 0, /* tp_setattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	428 0, /* tp_compare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	429 0, /* tp_repr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	430 0, /* tp_as_number */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	431 0, /* tp_as_sequence */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	432 0, /* tp_as_mapping */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	433 0, /* tp_hash */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	434 0, /* tp_call */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	435 0, /* tp_str */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	436 PyObject_GenericGetAttr, /* tp_getattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	437 0, /* tp_setattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	438 0, /* tp_as_buffer */
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	439 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC, /* tp_flags */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	440 teedataobject_doc, /* tp_doc */
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	441 (traverseproc)teedataobject_traverse, /* tp_traverse */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	442 (inquiry)teedataobject_clear, /* tp_clear */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	443 0, /* tp_richcompare */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	444 0, /* tp_weaklistoffset */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	445 0, /* tp_iter */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	446 0, /* tp_iternext */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	447 0, /* tp_methods */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	448 0, /* tp_members */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	449 0, /* tp_getset */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	450 0, /* tp_base */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	451 0, /* tp_dict */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	452 0, /* tp_descr_get */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	453 0, /* tp_descr_set */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	454 0, /* tp_dictoffset */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	455 0, /* tp_init */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	456 0, /* tp_alloc */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	457 0, /* tp_new */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	458 PyObject_GC_Del, /* tp_free */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	459 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	460
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	461
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	462 static PyTypeObject tee_type;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	463
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	464 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	465 tee_next(teeobject *to)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	466 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	467 PyObject value, link;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	468
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	469 if (to->index >= LINKCELLS) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	470 link = teedataobject_jumplink(to->dataobj);
39144 e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	471 Py_DECREF(to->dataobj);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	472 to->dataobj = (teedataobject *)link;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	473 to->index = 0;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	474 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	475 value = teedataobject_getitem(to->dataobj, to->index);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	476 if (value == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	477 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	478 to->index++;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	479 return value;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	480 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	481
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	482 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	483 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	484 {
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	485 Py_VISIT((PyObject *)to->dataobj);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	486 return 0;
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	487 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	488
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	489 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	490 tee_copy(teeobject *to)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	491 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	492 teeobject *newto;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	493
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	494 newto = PyObject_GC_New(teeobject, &tee_type);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	495 if (newto == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	496 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	497 Py_INCREF(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	498 newto->dataobj = to->dataobj;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	499 newto->index = to->index;
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	500 newto->weakreflist = NULL;
37757 e1388aba9896 Add missing PyObject_GC_Track call, causing some itertools.tee objects to Thomas Wouters <thomas@python.org> parents: 37248 diff changeset	501 PyObject_GC_Track(newto);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	502 return (PyObject *)newto;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	503 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	504
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	505 PyDoc_STRVAR(teecopy_doc, "Returns an independent iterator.");
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	506
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	507 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	508 tee_fromiterable(PyObject *iterable)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	509 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	510 teeobject *to;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	511 PyObject *it = NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	512
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	513 it = PyObject_GetIter(iterable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	514 if (it == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	515 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	516 if (PyObject_TypeCheck(it, &tee_type)) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	517 to = (teeobject )tee_copy((teeobject )it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	518 goto done;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	519 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	520
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	521 to = PyObject_GC_New(teeobject, &tee_type);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	522 if (to == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	523 goto done;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	524 to->dataobj = (teedataobject *)teedataobject_new(it);
39144 e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	525 if (!to->dataobj) {
e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	526 PyObject_GC_Del(to);
e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	527 to = NULL;
e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	528 goto done;
e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	529 }
e9773fc27e9b nextlink can be NULL if teedataobject_new fails, so use XINCREF. Neal Norwitz <nnorwitz@gmail.com> parents: 38420 diff changeset	530
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	531 to->index = 0;
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	532 to->weakreflist = NULL;
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	533 PyObject_GC_Track(to);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	534 done:
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	535 Py_XDECREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	536 return (PyObject *)to;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	537 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	538
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	539 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	540 tee_new(PyTypeObject type, PyObject args, PyObject *kw)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	541 {
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	542 PyObject *iterable;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	543
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	544 if (!PyArg_UnpackTuple(args, "tee", 1, 1, &iterable))
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	545 return NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	546 return tee_fromiterable(iterable);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	547 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	548
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	549 static int
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	550 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	551 {
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	552 if (to->weakreflist != NULL)
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	553 PyObject_ClearWeakRefs((PyObject *) to);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	554 Py_CLEAR(to->dataobj);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	555 return 0;
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	556 }
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	557
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	558 static void
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	559 tee_dealloc(teeobject *to)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	560 {
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	561 PyObject_GC_UnTrack(to);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	562 tee_clear(to);
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	563 PyObject_GC_Del(to);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	564 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	565
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	566 PyDoc_STRVAR(teeobject_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	567 "Iterator wrapped to make it copyable");
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	568
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	569 static PyMethodDef tee_methods[] = {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	570 {"__copy__", (PyCFunction)tee_copy, METH_NOARGS, teecopy_doc},
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	571 {NULL, NULL} /* sentinel */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	572 };
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	573
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	574 static PyTypeObject tee_type = {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	575 PyObject_HEAD_INIT(NULL)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	576 0, /* ob_size */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	577 "itertools.tee", /* tp_name */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	578 sizeof(teeobject), /* tp_basicsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	579 0, /* tp_itemsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	580 /* methods */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	581 (destructor)tee_dealloc, /* tp_dealloc */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	582 0, /* tp_print */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	583 0, /* tp_getattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	584 0, /* tp_setattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	585 0, /* tp_compare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	586 0, /* tp_repr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	587 0, /* tp_as_number */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	588 0, /* tp_as_sequence */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	589 0, /* tp_as_mapping */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	590 0, /* tp_hash */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	591 0, /* tp_call */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	592 0, /* tp_str */
30786 225d848a5f96 Minor improvements to itertools.tee(): Raymond Hettinger <python@rcn.com> parents: 30773 diff changeset	593 0, /* tp_getattro */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	594 0, /* tp_setattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	595 0, /* tp_as_buffer */
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	596 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC, /* tp_flags */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	597 teeobject_doc, /* tp_doc */
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	598 (traverseproc)tee_traverse, /* tp_traverse */
00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	599 (inquiry)tee_clear, /* tp_clear */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	600 0, /* tp_richcompare */
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	601 offsetof(teeobject, weakreflist), /* tp_weaklistoffset */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	602 PyObject_SelfIter, /* tp_iter */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	603 (iternextfunc)tee_next, /* tp_iternext */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	604 tee_methods, /* tp_methods */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	605 0, /* tp_members */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	606 0, /* tp_getset */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	607 0, /* tp_base */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	608 0, /* tp_dict */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	609 0, /* tp_descr_get */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	610 0, /* tp_descr_set */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	611 0, /* tp_dictoffset */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	612 0, /* tp_init */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	613 0, /* tp_alloc */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	614 tee_new, /* tp_new */
37248 00e9d59c23b4 Make itertools.tee and its internal teedataobject participate in GC. This Thomas Wouters <thomas@python.org> parents: 36684 diff changeset	615 PyObject_GC_Del, /* tp_free */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	616 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	617
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	618 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	619 tee(PyObject self, PyObject args)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	620 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	621 int i, n=2;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	622 PyObject it, iterable, copyable, result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	623
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	624 if (!PyArg_ParseTuple(args, "O\|i", &iterable, &n))
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	625 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	626 result = PyTuple_New(n);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	627 if (result == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	628 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	629 if (n == 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	630 return result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	631 it = PyObject_GetIter(iterable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	632 if (it == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	633 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	634 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	635 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	636 if (!PyObject_HasAttrString(it, "__copy__")) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	637 copyable = tee_fromiterable(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	638 Py_DECREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	639 if (copyable == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	640 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	641 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	642 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	643 } else
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	644 copyable = it;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	645 PyTuple_SET_ITEM(result, 0, copyable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	646 for (i=1 ; i<n ; i++) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	647 copyable = PyObject_CallMethod(copyable, "__copy__", NULL);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	648 if (copyable == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	649 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	650 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	651 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	652 PyTuple_SET_ITEM(result, i, copyable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	653 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	654 return result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	655 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	656
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	657 PyDoc_STRVAR(tee_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	658 "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	659
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	660
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	661 /* cycle object **********************************************************/
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	662
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	663 typedef struct {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	664 PyObject_HEAD
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	665 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	666 PyObject *saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	667 int firstpass;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	668 } cycleobject;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	669
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	670 static PyTypeObject cycle_type;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	671
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	672 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	673 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	674 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	675 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	676 PyObject *iterable;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	677 PyObject *saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	678 cycleobject *lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	679
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	680 if (!_PyArg_NoKeywords("cycle()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	681 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	682
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	683 if (!PyArg_UnpackTuple(args, "cycle", 1, 1, &iterable))
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	684 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	685
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	686 /* Get iterator. */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	687 it = PyObject_GetIter(iterable);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	688 if (it == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	689 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	690
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	691 saved = PyList_New(0);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	692 if (saved == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	693 Py_DECREF(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	694 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	695 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	696
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	697 /* create cycleobject structure */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	698 lz = (cycleobject *)type->tp_alloc(type, 0);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	699 if (lz == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	700 Py_DECREF(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	701 Py_DECREF(saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	702 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	703 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	704 lz->it = it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	705 lz->saved = saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	706 lz->firstpass = 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	707
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	708 return (PyObject *)lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	709 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	710
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	711 static void
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	712 cycle_dealloc(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	713 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	714 PyObject_GC_UnTrack(lz);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	715 Py_XDECREF(lz->saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	716 Py_XDECREF(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	717 lz->ob_type->tp_free(lz);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	718 }
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 static int
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	721 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	722 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	723 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	724 Py_VISIT(lz->saved);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	725 return 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	726 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	727
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	728 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	729 cycle_next(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	730 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	731 PyObject *item;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	732 PyObject *it;
33646 3d8d78217599 Replace structure member before decreffing. Raymond Hettinger <python@rcn.com> parents: 33616 diff changeset	733 PyObject *tmp;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	734
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	735 while (1) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	736 item = PyIter_Next(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	737 if (item != NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	738 if (!lz->firstpass)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	739 PyList_Append(lz->saved, item);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	740 return item;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	741 }
32010 544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	742 if (PyErr_Occurred()) {
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	743 if (PyErr_ExceptionMatches(PyExc_StopIteration))
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	744 PyErr_Clear();
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	745 else
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	746 return NULL;
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	747 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	748 if (PyList_Size(lz->saved) == 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	749 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	750 it = PyObject_GetIter(lz->saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	751 if (it == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	752 return NULL;
33646 3d8d78217599 Replace structure member before decreffing. Raymond Hettinger <python@rcn.com> parents: 33616 diff changeset	753 tmp = lz->it;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	754 lz->it = it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	755 lz->firstpass = 1;
33646 3d8d78217599 Replace structure member before decreffing. Raymond Hettinger <python@rcn.com> parents: 33616 diff changeset	756 Py_DECREF(tmp);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	757 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	758 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	759
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	760 PyDoc_STRVAR(cycle_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	761 "cycle(iterable) --> cycle object\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	762 \n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	763 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	764 Then repeat the sequence indefinitely.");
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	765
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	766 static PyTypeObject cycle_type = {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	767 PyObject_HEAD_INIT(NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	768 0, /* ob_size */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	769 "itertools.cycle", /* tp_name */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	770 sizeof(cycleobject), /* tp_basicsize */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	771 0, /* tp_itemsize */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	772 /* methods */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	773 (destructor)cycle_dealloc, /* tp_dealloc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	774 0, /* tp_print */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	775 0, /* tp_getattr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	776 0, /* tp_setattr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	777 0, /* tp_compare */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	778 0, /* tp_repr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	779 0, /* tp_as_number */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	780 0, /* tp_as_sequence */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	781 0, /* tp_as_mapping */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	782 0, /* tp_hash */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	783 0, /* tp_call */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	784 0, /* tp_str */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	785 PyObject_GenericGetAttr, /* tp_getattro */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	786 0, /* tp_setattro */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	787 0, /* tp_as_buffer */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	788 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	789 Py_TPFLAGS_BASETYPE, /* tp_flags */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	790 cycle_doc, /* tp_doc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	791 (traverseproc)cycle_traverse, /* tp_traverse */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	792 0, /* tp_clear */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	793 0, /* tp_richcompare */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	794 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	795 PyObject_SelfIter, /* tp_iter */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	796 (iternextfunc)cycle_next, /* tp_iternext */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	797 0, /* tp_methods */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	798 0, /* tp_members */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	799 0, /* tp_getset */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	800 0, /* tp_base */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	801 0, /* tp_dict */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	802 0, /* tp_descr_get */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	803 0, /* tp_descr_set */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	804 0, /* tp_dictoffset */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	805 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	806 0, /* tp_alloc */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	807 cycle_new, /* tp_new */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	808 PyObject_GC_Del, /* tp_free */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	809 };
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	810
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	811
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	812 /* dropwhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	813
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	814 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	815 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	816 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	817 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	818 long start;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	819 } dropwhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	820
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	821 static PyTypeObject dropwhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	822
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	823 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	824 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	825 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	826 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	827 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	828 dropwhileobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	829
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	830 if (!_PyArg_NoKeywords("dropwhile()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	831 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	832
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	833 if (!PyArg_UnpackTuple(args, "dropwhile", 2, 2, &func, &seq))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	834 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	835
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	836 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	837 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	838 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	839 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	840
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	841 /* create dropwhileobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	842 lz = (dropwhileobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	843 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	844 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	845 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	846 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	847 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	848 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	849 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	850 lz->start = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	851
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	852 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	853 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	854
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	855 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	856 dropwhile_dealloc(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	857 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	858 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	859 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	860 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	861 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	862 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	863
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	864 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	865 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	866 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	867 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	868 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	869 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	870 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	871
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	872 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	873 dropwhile_next(dropwhileobject *lz)
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 PyObject item, good;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	876 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	877 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	878 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	879
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	880 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	881 iternext = *it->ob_type->tp_iternext;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	882 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	883 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	884 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	885 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	886 if (lz->start == 1)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	887 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	888
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	889 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	890 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	891 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	892 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	893 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	894 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	895 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	896 if (!ok) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	897 lz->start = 1;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	898 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	899 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	900 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	901 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	902 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	903
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	904 PyDoc_STRVAR(dropwhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	905 "dropwhile(predicate, iterable) --> dropwhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	906 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	907 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	908 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	909
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	910 static PyTypeObject dropwhile_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	911 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	912 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	913 "itertools.dropwhile", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	914 sizeof(dropwhileobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	915 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	916 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	917 (destructor)dropwhile_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	918 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	919 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	920 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	921 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	922 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	923 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	924 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	925 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	926 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	927 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	928 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	929 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	930 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	931 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	932 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	933 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	934 dropwhile_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	935 (traverseproc)dropwhile_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	936 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	937 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	938 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	939 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	940 (iternextfunc)dropwhile_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	941 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	942 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	943 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	944 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	945 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	946 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	947 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	948 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	949 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	950 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	951 dropwhile_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	952 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	953 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	954
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	955
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	956 /* takewhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	957
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	958 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	959 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	960 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	961 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	962 long stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	963 } takewhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	964
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	965 static PyTypeObject takewhile_type;
27570 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 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	968 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	969 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	970 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	971 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	972 takewhileobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	973
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	974 if (!_PyArg_NoKeywords("takewhile()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	975 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	976
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	977 if (!PyArg_UnpackTuple(args, "takewhile", 2, 2, &func, &seq))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	978 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	979
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	980 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	981 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	982 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	983 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	984
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	985 /* create takewhileobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	986 lz = (takewhileobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	987 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	988 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	989 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	990 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	991 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	992 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	993 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	994 lz->stop = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	995
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	996 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	997 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	998
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	999 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1000 takewhile_dealloc(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1001 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1002 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1003 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1004 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1005 lz->ob_type->tp_free(lz);
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 int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1009 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	1010 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1011 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1012 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1013 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1014 }
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 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1017 takewhile_next(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1018 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1019 PyObject item, good;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1020 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1021 long ok;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1022
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1023 if (lz->stop == 1)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1024 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1025
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1026 assert(PyIter_Check(it));
9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1027 item = (*it->ob_type->tp_iternext)(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1028 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1029 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1030
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1031 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1032 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1033 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1034 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1035 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1036 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1037 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1038 if (ok)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1039 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1040 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1041 lz->stop = 1;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1042 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1043 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1044
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1045 PyDoc_STRVAR(takewhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1046 "takewhile(predicate, iterable) --> takewhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1047 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1048 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	1049 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	1050
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1051 static PyTypeObject takewhile_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1052 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1053 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1054 "itertools.takewhile", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1055 sizeof(takewhileobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1056 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1057 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1058 (destructor)takewhile_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1059 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1060 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1061 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1062 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1063 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1064 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1065 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1066 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1067 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1068 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1069 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1070 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1071 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1072 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1073 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1074 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1075 takewhile_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1076 (traverseproc)takewhile_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1077 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1078 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1079 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1080 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1081 (iternextfunc)takewhile_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1082 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1083 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1084 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1085 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1086 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1087 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1088 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1089 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1090 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1091 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1092 takewhile_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1093 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1094 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1095
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1096
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1097 /* islice object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1098
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1099 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1100 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1101 PyObject *it;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1102 Py_ssize_t next;
a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1103 Py_ssize_t stop;
a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1104 Py_ssize_t step;
a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1105 Py_ssize_t cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1106 } isliceobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1107
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1108 static PyTypeObject islice_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1109
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1110 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1111 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	1112 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1113 PyObject *seq;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1114 Py_ssize_t start=0, stop=-1, step=1;
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1115 PyObject it, a1=NULL, a2=NULL, a3=NULL;
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	1116 Py_ssize_t numargs;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1117 isliceobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1118
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1119 if (!_PyArg_NoKeywords("islice()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1120 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1121
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1122 if (!PyArg_UnpackTuple(args, "islice", 2, 4, &seq, &a1, &a2, &a3))
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1123 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1124
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1125 numargs = PyTuple_Size(args);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1126 if (numargs == 2) {
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1127 if (a1 != Py_None) {
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1128 stop = PyInt_AsSsize_t(a1);
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1129 if (stop == -1) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1130 if (PyErr_Occurred())
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1131 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1132 PyErr_SetString(PyExc_ValueError,
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1133 "Stop argument for islice() must be a non-negative integer or None.");
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1134 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1135 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1136 }
28930 18082b2d2ebd The previous made the stop argument optional. Raymond Hettinger <python@rcn.com> parents: 28929 diff changeset	1137 } else {
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1138 if (a1 != Py_None)
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1139 start = PyInt_AsSsize_t(a1);
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1140 if (start == -1 && PyErr_Occurred())
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1141 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1142 if (a2 != Py_None) {
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1143 stop = PyInt_AsSsize_t(a2);
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1144 if (stop == -1) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1145 if (PyErr_Occurred())
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1146 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1147 PyErr_SetString(PyExc_ValueError,
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1148 "Stop argument for islice() must be a non-negative integer or None.");
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1149 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1150 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1151 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1152 }
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1153 if (start<0 \|\| stop<-1) {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1154 PyErr_SetString(PyExc_ValueError,
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1155 "Indices for islice() must be non-negative integers or None.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1156 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1157 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1158
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1159 if (a3 != NULL) {
1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1160 if (a3 != Py_None)
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1161 step = PyInt_AsSsize_t(a3);
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1162 if (step == -1 && PyErr_Occurred())
1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1163 PyErr_Clear();
1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1164 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1165 if (step<1) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1166 PyErr_SetString(PyExc_ValueError,
34108 1d1d6377acb1 Added optional None arguments to itertools.islice(). Raymond Hettinger <python@rcn.com> parents: 33779 diff changeset	1167 "Step for islice() must be a positive integer or None.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1168 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1169 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1170
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1171 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1172 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1173 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1174 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1175
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1176 /* create isliceobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1177 lz = (isliceobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1178 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1179 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1180 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1181 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1182 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1183 lz->next = start;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1184 lz->stop = stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1185 lz->step = step;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1186 lz->cnt = 0L;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1187
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1188 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1189 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1190
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1191 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1192 islice_dealloc(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1193 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1194 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1195 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1196 lz->ob_type->tp_free(lz);
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1199 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1200 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	1201 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1202 Py_VISIT(lz->it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1203 return 0;
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 PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1207 islice_next(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1208 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1209 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1210 PyObject *it = lz->it;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1211 Py_ssize_t oldnext;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1212 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1213
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1214 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1215 iternext = *it->ob_type->tp_iternext;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1216 while (lz->cnt < lz->next) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1217 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1218 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1219 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1220 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1221 lz->cnt++;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1222 }
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1223 if (lz->stop != -1 && lz->cnt >= lz->stop)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1224 return NULL;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1225 assert(PyIter_Check(it));
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1226 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1227 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1228 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1229 lz->cnt++;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1230 oldnext = lz->next;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1231 lz->next += lz->step;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1232 if (lz->next < oldnext) /* Check for overflow */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1233 lz->next = lz->stop;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1234 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1235 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1236
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1237 PyDoc_STRVAR(islice_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1238 "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	1239 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1240 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	1241 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	1242 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	1243 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	1244 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	1245 but returns an iterator.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1246
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1247 static PyTypeObject islice_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1248 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1249 0, /* ob_size */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1250 "itertools.islice", /* tp_name */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1251 sizeof(isliceobject), /* tp_basicsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1252 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1253 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1254 (destructor)islice_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1255 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1256 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1257 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1258 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1259 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1260 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1261 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1262 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1263 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1264 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1265 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1266 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1267 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1268 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1269 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1270 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1271 islice_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1272 (traverseproc)islice_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1273 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1274 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1275 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1276 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1277 (iternextfunc)islice_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1278 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1279 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1280 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1281 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1282 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1283 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1284 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1285 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1286 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1287 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1288 islice_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1289 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1290 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1291
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1292
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1293 /* starmap object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1294
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1295 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1296 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1297 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1298 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1299 } starmapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1300
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1301 static PyTypeObject starmap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1302
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1303 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1304 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	1305 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1306 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1307 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1308 starmapobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1309
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1310 if (!_PyArg_NoKeywords("starmap()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1311 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1312
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1313 if (!PyArg_UnpackTuple(args, "starmap", 2, 2, &func, &seq))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1314 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1315
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1316 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1317 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1318 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1319 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1320
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1321 /* create starmapobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1322 lz = (starmapobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1323 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1324 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1325 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1326 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1327 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1328 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1329 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1330
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1331 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1332 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1333
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1334 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1335 starmap_dealloc(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1336 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1337 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1338 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1339 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1340 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1341 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1342
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1343 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1344 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	1345 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1346 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1347 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1348 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1349 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1350
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1351 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1352 starmap_next(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1353 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1354 PyObject *args;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1355 PyObject *result;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1356 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1357
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1358 assert(PyIter_Check(it));
9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1359 args = (*it->ob_type->tp_iternext)(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1360 if (args == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1361 return NULL;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1362 if (!PyTuple_CheckExact(args)) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1363 Py_DECREF(args);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1364 PyErr_SetString(PyExc_TypeError,
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1365 "iterator must return a tuple");
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1366 return NULL;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1367 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1368 result = PyObject_Call(lz->func, args, NULL);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1369 Py_DECREF(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1370 return result;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1371 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1372
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1373 PyDoc_STRVAR(starmap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1374 "starmap(function, sequence) --> starmap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1375 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1376 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	1377 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	1378
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1379 static PyTypeObject starmap_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1380 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1381 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1382 "itertools.starmap", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1383 sizeof(starmapobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1384 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1385 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1386 (destructor)starmap_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1387 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1388 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1389 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1390 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1391 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1392 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1393 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1394 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1395 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1396 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1397 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1398 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1399 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1400 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1401 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1402 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1403 starmap_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1404 (traverseproc)starmap_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1405 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1406 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1407 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1408 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1409 (iternextfunc)starmap_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1410 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1411 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1412 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1413 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1414 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1415 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1416 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1417 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1418 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1419 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1420 starmap_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1421 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1422 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1423
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1424
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1425 /* imap object ************************************************************/
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 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1428 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1429 PyObject *iters;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1430 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1431 } imapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1432
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1433 static PyTypeObject imap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1434
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1435 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1436 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	1437 {
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1438 PyObject it, iters, *func;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1439 imapobject *lz;
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	1440 Py_ssize_t numargs, i;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1441
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1442 if (!_PyArg_NoKeywords("imap()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1443 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1444
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1445 numargs = PyTuple_Size(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1446 if (numargs < 2) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1447 PyErr_SetString(PyExc_TypeError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1448 "imap() must have at least two arguments.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1449 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1450 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1451
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1452 iters = PyTuple_New(numargs-1);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1453 if (iters == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1454 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1455
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1456 for (i=1 ; i<numargs ; i++) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1457 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1458 it = PyObject_GetIter(PyTuple_GET_ITEM(args, i));
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1459 if (it == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1460 Py_DECREF(iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1461 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1462 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1463 PyTuple_SET_ITEM(iters, i-1, it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1464 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1465
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1466 /* create imapobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1467 lz = (imapobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1468 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1469 Py_DECREF(iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1470 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1471 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1472 lz->iters = iters;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1473 func = PyTuple_GET_ITEM(args, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1474 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1475 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1476
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1477 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1478 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1479
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1480 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1481 imap_dealloc(imapobject *lz)
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 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1484 Py_XDECREF(lz->iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1485 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1486 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1487 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1488
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1489 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1490 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	1491 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1492 Py_VISIT(lz->iters);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1493 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1494 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1495 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1496
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1497 /*
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1498 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	1499 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	1500 the following reasons:
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1501
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1502 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	1503 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	1504 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	1505 infinite iterators like count() and repeat() (for supplying sequential
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1506 or constant arguments to a function).
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1507
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1508 2) In typical use cases for combining itertools, having one finite data
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1509 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	1510 should not pass silently by automatically supplying None.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1511
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1512 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	1513 do something useful when a parameter suddenly switches type and becomes
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1514 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 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	1517 writing: chain(iterable, repeat(None)).
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1518
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1519 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	1520 */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1521
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1522 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1523 imap_next(imapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1524 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1525 PyObject *val;
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1526 PyObject *argtuple;
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1527 PyObject *result;
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	1528 Py_ssize_t numargs, i;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1529
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1530 numargs = PyTuple_Size(lz->iters);
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1531 argtuple = PyTuple_New(numargs);
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1532 if (argtuple == NULL)
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1533 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1534
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1535 for (i=0 ; i<numargs ; i++) {
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1536 val = PyIter_Next(PyTuple_GET_ITEM(lz->iters, i));
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1537 if (val == NULL) {
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1538 Py_DECREF(argtuple);
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1539 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1540 }
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1541 PyTuple_SET_ITEM(argtuple, i, val);
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1542 }
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1543 if (lz->func == Py_None)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1544 return argtuple;
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1545 result = PyObject_Call(lz->func, argtuple, NULL);
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1546 Py_DECREF(argtuple);
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1547 return result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1548 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1549
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1550 PyDoc_STRVAR(imap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1551 "imap(func, *iterables) --> imap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1552 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1553 Make an iterator that computes the function using arguments from\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1554 each of the iterables. Like map() except that it returns\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1555 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	1556 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	1557 iterables.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1558
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1559 static PyTypeObject imap_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1560 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1561 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1562 "itertools.imap", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1563 sizeof(imapobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1564 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1565 /* methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1566 (destructor)imap_dealloc, /* tp_dealloc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1567 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1568 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1569 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1570 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1571 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1572 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1573 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1574 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1575 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1576 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1577 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1578 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1579 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1580 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1581 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1582 Py_TPFLAGS_BASETYPE, /* tp_flags */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1583 imap_doc, /* tp_doc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1584 (traverseproc)imap_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1585 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1586 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1587 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1588 PyObject_SelfIter, /* tp_iter */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1589 (iternextfunc)imap_next, /* tp_iternext */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1590 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1591 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1592 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1593 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1594 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1595 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1596 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1597 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1598 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1599 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1600 imap_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1601 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1602 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1603
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1604
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1605 /* chain object ************************************************************/
27570 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 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1608 PyObject_HEAD
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1609 Py_ssize_t tuplesize;
a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1610 Py_ssize_t iternum; /* which iterator is active */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1611 PyObject ittuple; / tuple of iterators */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1612 } chainobject;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1613
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1614 static PyTypeObject chain_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1615
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1616 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1617 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	1618 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1619 chainobject *lz;
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	1620 Py_ssize_t tuplesize = PySequence_Length(args);
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	1621 Py_ssize_t i;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1622 PyObject *ittuple;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1623
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1624 if (!_PyArg_NoKeywords("chain()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1625 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1626
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1627 /* obtain iterators */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1628 assert(PyTuple_Check(args));
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1629 ittuple = PyTuple_New(tuplesize);
38420 499cf7c2f777 Fix compiler warning (and whitespace) on Mac OS 10.4. (A lot of this code looked duplicated, I wonder if a utility function could help reduce the duplication here.) Neal Norwitz <nnorwitz@gmail.com> parents: 38341 diff changeset	1630 if (ittuple == NULL)
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1631 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1632 for (i=0; i < tuplesize; ++i) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1633 PyObject *item = PyTuple_GET_ITEM(args, i);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1634 PyObject *it = PyObject_GetIter(item);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1635 if (it == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1636 if (PyErr_ExceptionMatches(PyExc_TypeError))
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1637 PyErr_Format(PyExc_TypeError,
38420 499cf7c2f777 Fix compiler warning (and whitespace) on Mac OS 10.4. (A lot of this code looked duplicated, I wonder if a utility function could help reduce the duplication here.) Neal Norwitz <nnorwitz@gmail.com> parents: 38341 diff changeset	1638 "chain argument #%zd must support iteration",
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1639 i+1);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1640 Py_DECREF(ittuple);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1641 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1642 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1643 PyTuple_SET_ITEM(ittuple, i, it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1644 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1645
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1646 /* create chainobject structure */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1647 lz = (chainobject *)type->tp_alloc(type, 0);
29522 70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1648 if (lz == NULL) {
70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1649 Py_DECREF(ittuple);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1650 return NULL;
29522 70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1651 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1652
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1653 lz->ittuple = ittuple;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1654 lz->iternum = 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1655 lz->tuplesize = tuplesize;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1656
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1657 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1658 }
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 static void
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1661 chain_dealloc(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1662 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1663 PyObject_GC_UnTrack(lz);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1664 Py_XDECREF(lz->ittuple);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1665 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1666 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1667
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1668 static int
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1669 chain_traverse(chainobject lz, visitproc visit, void arg)
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1670 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1671 Py_VISIT(lz->ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1672 return 0;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1673 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1674
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1675 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1676 chain_next(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1677 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1678 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1679 PyObject *item;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1680
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1681 while (lz->iternum < lz->tuplesize) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1682 it = PyTuple_GET_ITEM(lz->ittuple, lz->iternum);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1683 item = PyIter_Next(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1684 if (item != NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1685 return item;
32010 544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1686 if (PyErr_Occurred()) {
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1687 if (PyErr_ExceptionMatches(PyExc_StopIteration))
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1688 PyErr_Clear();
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1689 else
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1690 return NULL;
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1691 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1692 lz->iternum++;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1693 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1694 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1695 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1696
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1697 PyDoc_STRVAR(chain_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1698 "chain(*iterables) --> chain object\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1699 \n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1700 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	1701 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	1702 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	1703
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1704 static PyTypeObject chain_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1705 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1706 0, /* ob_size */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1707 "itertools.chain", /* tp_name */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1708 sizeof(chainobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1709 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1710 /* methods */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1711 (destructor)chain_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1712 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1713 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1714 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1715 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1716 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1717 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1718 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1719 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1720 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1721 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1722 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1723 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1724 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1725 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1726 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1727 Py_TPFLAGS_BASETYPE, /* tp_flags */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1728 chain_doc, /* tp_doc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1729 (traverseproc)chain_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1730 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1731 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1732 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1733 PyObject_SelfIter, /* tp_iter */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1734 (iternextfunc)chain_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1735 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1736 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1737 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1738 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1739 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1740 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1741 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1742 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1743 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1744 0, /* tp_alloc */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1745 chain_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1746 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1747 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1748
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1749
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1750 /* ifilter object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1751
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1752 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1753 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1754 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1755 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1756 } ifilterobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1757
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1758 static PyTypeObject ifilter_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1759
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1760 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1761 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	1762 {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1763 PyObject func, seq;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1764 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1765 ifilterobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1766
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1767 if (!_PyArg_NoKeywords("ifilter()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1768 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1769
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1770 if (!PyArg_UnpackTuple(args, "ifilter", 2, 2, &func, &seq))
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1771 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1772
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1773 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1774 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1775 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1776 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1777
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1778 /* create ifilterobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1779 lz = (ifilterobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1780 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1781 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1782 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1783 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1784 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1785 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1786 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1787
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1788 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1789 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1790
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1791 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1792 ifilter_dealloc(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1793 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1794 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1795 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1796 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1797 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1798 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1799
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1800 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1801 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	1802 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1803 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1804 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1805 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1806 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1807
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1808 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1809 ifilter_next(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1810 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1811 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1812 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1813 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1814 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1815
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1816 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1817 iternext = *it->ob_type->tp_iternext;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1818 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1819 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1820 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1821 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1822
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1823 if (lz->func == Py_None) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1824 ok = PyObject_IsTrue(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1825 } else {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1826 PyObject *good;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1827 good = PyObject_CallFunctionObjArgs(lz->func,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1828 item, NULL);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1829 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1830 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1831 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1832 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1833 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1834 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1835 }
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1836 if (ok)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1837 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1838 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1839 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1840 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1841
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1842 PyDoc_STRVAR(ifilter_doc,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1843 "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	1844 \n\
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1845 Return those items of sequence for which function(item) is true.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1846 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	1847
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1848 static PyTypeObject ifilter_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1849 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1850 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1851 "itertools.ifilter", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1852 sizeof(ifilterobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1853 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1854 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1855 (destructor)ifilter_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1856 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1857 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1858 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1859 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1860 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1861 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1862 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1863 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1864 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1865 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1866 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1867 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1868 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1869 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1870 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1871 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1872 ifilter_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1873 (traverseproc)ifilter_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1874 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1875 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1876 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1877 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1878 (iternextfunc)ifilter_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1879 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1880 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1881 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1882 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1883 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1884 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1885 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1886 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1887 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1888 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1889 ifilter_new, /* tp_new */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1890 PyObject_GC_Del, /* tp_free */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1891 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1892
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1893
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1894 /* ifilterfalse object ************************************************************/
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1895
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1896 typedef struct {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1897 PyObject_HEAD
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1898 PyObject *func;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1899 PyObject *it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1900 } ifilterfalseobject;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1901
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1902 static PyTypeObject ifilterfalse_type;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1903
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1904 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1905 ifilterfalse_new(PyTypeObject type, PyObject args, PyObject *kwds)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1906 {
27770 2c389a0448a4 Remove unused variable. Guido van Rossum <guido@python.org> parents: 27769 diff changeset	1907 PyObject func, seq;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1908 PyObject *it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1909 ifilterfalseobject *lz;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1910
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1911 if (!_PyArg_NoKeywords("ifilterfalse()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1912 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	1913
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1914 if (!PyArg_UnpackTuple(args, "ifilterfalse", 2, 2, &func, &seq))
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1915 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1916
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1917 /* Get iterator. */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1918 it = PyObject_GetIter(seq);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1919 if (it == NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1920 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1921
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1922 /* create ifilterfalseobject structure */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1923 lz = (ifilterfalseobject *)type->tp_alloc(type, 0);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1924 if (lz == NULL) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1925 Py_DECREF(it);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1926 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1927 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1928 Py_INCREF(func);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1929 lz->func = func;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1930 lz->it = it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1931
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1932 return (PyObject *)lz;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1933 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1934
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1935 static void
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1936 ifilterfalse_dealloc(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1937 {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1938 PyObject_GC_UnTrack(lz);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1939 Py_XDECREF(lz->func);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1940 Py_XDECREF(lz->it);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1941 lz->ob_type->tp_free(lz);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1942 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1943
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1944 static int
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1945 ifilterfalse_traverse(ifilterfalseobject lz, visitproc visit, void arg)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1946 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1947 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1948 Py_VISIT(lz->func);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1949 return 0;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1950 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1951
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1952 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1953 ifilterfalse_next(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1954 {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1955 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1956 PyObject *it = lz->it;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1957 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1958 PyObject (iternext)(PyObject *);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1959
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1960 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1961 iternext = *it->ob_type->tp_iternext;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1962 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1963 item = iternext(it);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1964 if (item == NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1965 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1966
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1967 if (lz->func == Py_None) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1968 ok = PyObject_IsTrue(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1969 } else {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1970 PyObject *good;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1971 good = PyObject_CallFunctionObjArgs(lz->func,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1972 item, NULL);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1973 if (good == NULL) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1974 Py_DECREF(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1975 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1976 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1977 ok = PyObject_IsTrue(good);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1978 Py_DECREF(good);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1979 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1980 if (!ok)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1981 return item;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1982 Py_DECREF(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1983 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1984 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1985
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1986 PyDoc_STRVAR(ifilterfalse_doc,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1987 "ifilterfalse(function or None, sequence) --> ifilterfalse object\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1988 \n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1989 Return those items of sequence for which function(item) is false.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1990 If function is None, return the items that are false.");
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1991
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1992 static PyTypeObject ifilterfalse_type = {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1993 PyObject_HEAD_INIT(NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1994 0, /* ob_size */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1995 "itertools.ifilterfalse", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1996 sizeof(ifilterfalseobject), /* tp_basicsize */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1997 0, /* tp_itemsize */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1998 /* methods */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1999 (destructor)ifilterfalse_dealloc, /* tp_dealloc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2000 0, /* tp_print */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2001 0, /* tp_getattr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2002 0, /* tp_setattr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2003 0, /* tp_compare */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2004 0, /* tp_repr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2005 0, /* tp_as_number */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2006 0, /* tp_as_sequence */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2007 0, /* tp_as_mapping */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2008 0, /* tp_hash */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2009 0, /* tp_call */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2010 0, /* tp_str */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2011 PyObject_GenericGetAttr, /* tp_getattro */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2012 0, /* tp_setattro */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2013 0, /* tp_as_buffer */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2014 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2015 Py_TPFLAGS_BASETYPE, /* tp_flags */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2016 ifilterfalse_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2017 (traverseproc)ifilterfalse_traverse, /* tp_traverse */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2018 0, /* tp_clear */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2019 0, /* tp_richcompare */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2020 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2021 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2022 (iternextfunc)ifilterfalse_next, /* tp_iternext */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2023 0, /* tp_methods */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2024 0, /* tp_members */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2025 0, /* tp_getset */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2026 0, /* tp_base */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2027 0, /* tp_dict */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2028 0, /* tp_descr_get */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2029 0, /* tp_descr_set */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2030 0, /* tp_dictoffset */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2031 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2032 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2033 ifilterfalse_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2034 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2035 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2036
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2037
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2038 /* count object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2039
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2040 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2041 PyObject_HEAD
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2042 Py_ssize_t cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2043 } countobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2044
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2045 static PyTypeObject count_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2046
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2047 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2048 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	2049 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2050 countobject *lz;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2051 Py_ssize_t cnt = 0;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2052
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2053 if (!_PyArg_NoKeywords("count()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2054 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2055
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2056 if (!PyArg_ParseTuple(args, "\|n:count", &cnt))
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2057 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2058
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2059 /* create countobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2060 lz = (countobject *)PyObject_New(countobject, &count_type);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2061 if (lz == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2062 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2063 lz->cnt = cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2064
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2065 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2066 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2067
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2068 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2069 count_next(countobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2070 {
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2071 return PyInt_FromSize_t(lz->cnt++);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2072 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2073
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2074 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2075 count_repr(countobject *lz)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2076 {
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2077 return PyString_FromFormat("count(%zd)", lz->cnt);
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2078 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2079
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2080 PyDoc_STRVAR(count_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2081 "count([firstval]) --> count object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2082 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2083 Return a count object whose .next() method returns consecutive\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2084 integers starting from zero or, if specified, from firstval.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2085
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2086 static PyTypeObject count_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2087 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2088 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2089 "itertools.count", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2090 sizeof(countobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2091 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2092 /* methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2093 (destructor)PyObject_Del, /* tp_dealloc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2094 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2095 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2096 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2097 0, /* tp_compare */
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2098 (reprfunc)count_repr, /* tp_repr */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2099 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2100 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2101 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2102 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2103 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2104 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2105 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2106 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2107 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2108 Py_TPFLAGS_DEFAULT, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2109 count_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2110 0, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2111 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2112 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2113 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2114 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2115 (iternextfunc)count_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2116 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2117 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2118 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2119 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2120 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2121 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2122 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2123 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2124 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2125 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2126 count_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2127 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2128
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2129
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2130 /* izip object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2131
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2132 #include "Python.h"
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2133
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2134 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2135 PyObject_HEAD
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	2136 Py_ssize_t tuplesize;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2137 PyObject ittuple; / tuple of iterators */
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2138 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2139 } izipobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2140
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2141 static PyTypeObject izip_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2142
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2143 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2144 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	2145 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2146 izipobject *lz;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2147 Py_ssize_t i;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2148 PyObject ittuple; / tuple of iterators */
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2149 PyObject *result;
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	2150 Py_ssize_t tuplesize = PySequence_Length(args);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2151
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2152 if (!_PyArg_NoKeywords("izip()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2153 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2154
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2155 /* args must be a tuple */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2156 assert(PyTuple_Check(args));
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2157
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2158 /* obtain iterators */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2159 ittuple = PyTuple_New(tuplesize);
38420 499cf7c2f777 Fix compiler warning (and whitespace) on Mac OS 10.4. (A lot of this code looked duplicated, I wonder if a utility function could help reduce the duplication here.) Neal Norwitz <nnorwitz@gmail.com> parents: 38341 diff changeset	2160 if (ittuple == NULL)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2161 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2162 for (i=0; i < tuplesize; ++i) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2163 PyObject *item = PyTuple_GET_ITEM(args, i);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2164 PyObject *it = PyObject_GetIter(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2165 if (it == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2166 if (PyErr_ExceptionMatches(PyExc_TypeError))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2167 PyErr_Format(PyExc_TypeError,
38420 499cf7c2f777 Fix compiler warning (and whitespace) on Mac OS 10.4. (A lot of this code looked duplicated, I wonder if a utility function could help reduce the duplication here.) Neal Norwitz <nnorwitz@gmail.com> parents: 38341 diff changeset	2168 "izip argument #%zd must support iteration",
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2169 i+1);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2170 Py_DECREF(ittuple);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2171 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2172 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2173 PyTuple_SET_ITEM(ittuple, i, it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2174 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2175
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2176 /* create a result holder */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2177 result = PyTuple_New(tuplesize);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2178 if (result == NULL) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2179 Py_DECREF(ittuple);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2180 return NULL;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2181 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2182 for (i=0 ; i < tuplesize ; i++) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2183 Py_INCREF(Py_None);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2184 PyTuple_SET_ITEM(result, i, Py_None);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2185 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2186
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2187 /* create izipobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2188 lz = (izipobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2189 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2190 Py_DECREF(ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2191 Py_DECREF(result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2192 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2193 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2194 lz->ittuple = ittuple;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2195 lz->tuplesize = tuplesize;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2196 lz->result = result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2197
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2198 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2199 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2200
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2201 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2202 izip_dealloc(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2203 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2204 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2205 Py_XDECREF(lz->ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2206 Py_XDECREF(lz->result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2207 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2208 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2209
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2210 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2211 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	2212 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2213 Py_VISIT(lz->ittuple);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2214 Py_VISIT(lz->result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2215 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2216 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2217
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2218 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2219 izip_next(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2220 {
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2221 Py_ssize_t i;
36518 9f3f87e920a6 Use Py_ssize_t for counts and sizes. Martin v. Löwis <martin@v.loewis.de> parents: 36484 diff changeset	2222 Py_ssize_t tuplesize = lz->tuplesize;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2223 PyObject *result = lz->result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2224 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2225 PyObject *item;
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2226 PyObject *olditem;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2227
30093 0ac4396b1894 Modified itertools.izip() to match the behavior of __builtin__.zip() Raymond Hettinger <python@rcn.com> parents: 29850 diff changeset	2228 if (tuplesize == 0)
0ac4396b1894 Modified itertools.izip() to match the behavior of __builtin__.zip() Raymond Hettinger <python@rcn.com> parents: 29850 diff changeset	2229 return NULL;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2230 if (result->ob_refcnt == 1) {
30238 a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2231 Py_INCREF(result);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2232 for (i=0 ; i < tuplesize ; i++) {
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2233 it = PyTuple_GET_ITEM(lz->ittuple, i);
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	2234 assert(PyIter_Check(it));
9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	2235 item = (*it->ob_type->tp_iternext)(it);
30238 a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2236 if (item == NULL) {
a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2237 Py_DECREF(result);
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2238 return NULL;
30238 a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2239 }
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2240 olditem = PyTuple_GET_ITEM(result, i);
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2241 PyTuple_SET_ITEM(result, i, item);
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2242 Py_DECREF(olditem);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2243 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2244 } else {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2245 result = PyTuple_New(tuplesize);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2246 if (result == NULL)
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2247 return NULL;
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2248 for (i=0 ; i < tuplesize ; i++) {
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2249 it = PyTuple_GET_ITEM(lz->ittuple, i);
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	2250 assert(PyIter_Check(it));
9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	2251 item = (*it->ob_type->tp_iternext)(it);
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2252 if (item == NULL) {
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2253 Py_DECREF(result);
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2254 return NULL;
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2255 }
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2256 PyTuple_SET_ITEM(result, i, item);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2257 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2258 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2259 return result;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2260 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2261
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2262 PyDoc_STRVAR(izip_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2263 "izip(iter1 [,iter2 [...]]) --> izip object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2264 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2265 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	2266 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	2267 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	2268 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	2269 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	2270 a list.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2271
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2272 static PyTypeObject izip_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2273 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2274 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2275 "itertools.izip", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2276 sizeof(izipobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2277 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2278 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2279 (destructor)izip_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2280 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2281 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2282 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2283 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2284 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2285 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2286 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2287 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2288 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2289 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2290 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2291 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2292 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2293 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2294 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2295 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2296 izip_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2297 (traverseproc)izip_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2298 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2299 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2300 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2301 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2302 (iternextfunc)izip_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2303 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2304 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2305 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2306 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2307 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2308 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2309 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2310 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2311 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2312 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2313 izip_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2314 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2315 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2316
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2317
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2318 /* repeat object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2319
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2320 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2321 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2322 PyObject *element;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2323 Py_ssize_t cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2324 } repeatobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2325
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2326 static PyTypeObject repeat_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2327
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2328 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2329 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	2330 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2331 repeatobject *ro;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2332 PyObject *element;
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2333 Py_ssize_t cnt = -1;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2334
35449 1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2335 if (!_PyArg_NoKeywords("repeat()", kwds))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2336 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them. Georg Brandl <georg@python.org> parents: 34108 diff changeset	2337
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2338 if (!PyArg_ParseTuple(args, "O\|n:repeat", &element, &cnt))
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2339 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2340
28945 001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2341 if (PyTuple_Size(args) == 2 && cnt < 0)
001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2342 cnt = 0;
001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2343
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2344 ro = (repeatobject *)type->tp_alloc(type, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2345 if (ro == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2346 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2347 Py_INCREF(element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2348 ro->element = element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2349 ro->cnt = cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2350 return (PyObject *)ro;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2351 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2352
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2353 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2354 repeat_dealloc(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2355 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2356 PyObject_GC_UnTrack(ro);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2357 Py_XDECREF(ro->element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2358 ro->ob_type->tp_free(ro);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2359 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2360
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2361 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2362 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	2363 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2364 Py_VISIT(ro->element);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2365 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2366 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2367
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2368 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2369 repeat_next(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2370 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2371 if (ro->cnt == 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2372 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2373 if (ro->cnt > 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2374 ro->cnt--;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2375 Py_INCREF(ro->element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2376 return ro->element;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2377 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2378
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2379 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2380 repeat_repr(repeatobject *ro)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2381 {
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2382 PyObject result, objrepr;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2383
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2384 objrepr = PyObject_Repr(ro->element);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2385 if (objrepr == NULL)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2386 return NULL;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2387
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2388 if (ro->cnt == -1)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2389 result = PyString_FromFormat("repeat(%s)",
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2390 PyString_AS_STRING(objrepr));
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2391 else
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2392 result = PyString_FromFormat("repeat(%s, %zd)",
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2393 PyString_AS_STRING(objrepr), ro->cnt);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2394 Py_DECREF(objrepr);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2395 return result;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2396 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2397
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2398 static PyObject *
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2399 repeat_len(repeatobject *ro)
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2400 {
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2401 if (ro->cnt == -1) {
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2402 PyErr_SetString(PyExc_TypeError, "len() of unsized object");
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2403 return NULL;
e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2404 }
38341 a654d61d36d5 use Py_ssize_t in places that may need it Jack Diederich <jackdied@gmail.com> parents: 37757 diff changeset	2405 return PyInt_FromSize_t(ro->cnt);
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2406 }
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2407
36484 20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See: Armin Rigo <arigo@tunes.org> parents: 36324 diff changeset	2408 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	2409
e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2410 static PyMethodDef repeat_methods[] = {
36484 20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See: Armin Rigo <arigo@tunes.org> parents: 36324 diff changeset	2411 {"__length_hint__", (PyCFunction)repeat_len, METH_NOARGS, length_hint_doc},
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2412 {NULL, NULL} /* sentinel */
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2413 };
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2414
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2415 PyDoc_STRVAR(repeat_doc,
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2416 "repeat(element [,times]) -> create an iterator which returns the element\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2417 for the specified number of times. If not specified, returns the element\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2418 endlessly.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2419
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2420 static PyTypeObject repeat_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2421 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2422 0, /* ob_size */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2423 "itertools.repeat", /* tp_name */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2424 sizeof(repeatobject), /* tp_basicsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2425 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2426 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2427 (destructor)repeat_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2428 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2429 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2430 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2431 0, /* tp_compare */
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2432 (reprfunc)repeat_repr, /* tp_repr */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2433 0, /* tp_as_number */
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2434 0, /* tp_as_sequence */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2435 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2436 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2437 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2438 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2439 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2440 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2441 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2442 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2443 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2444 repeat_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2445 (traverseproc)repeat_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2446 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2447 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2448 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2449 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2450 (iternextfunc)repeat_next, /* tp_iternext */
35636 e22334b1da67 Convert iterator __len__() methods to a private API. Raymond Hettinger <python@rcn.com> parents: 35449 diff changeset	2451 repeat_methods, /* tp_methods */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2452 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2453 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2454 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2455 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2456 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2457 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2458 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2459 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2460 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2461 repeat_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2462 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2463 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2464
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2465
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2466 /* module level code ********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2467
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2468 PyDoc_STRVAR(module_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2469 "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	2470 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2471 Infinite iterators:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2472 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	2473 cycle(p) --> p0, p1, ... plast, p0, p1, ...\n\
28601 58db5fbd9c28 Fix docstring typo Andrew M. Kuchling <amk@amk.ca> parents: 28320 diff changeset	2474 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	2475 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2476 Iterators terminating on the shortest input sequence:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2477 izip(p, q, ...) --> (p[0], q[0]), (p[1], q[1]), ... \n\
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2478 ifilter(pred, seq) --> elements of seq where pred(elem) is True\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2479 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	2480 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	2481 seq[start:stop:step]\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2482 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	2483 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	2484 tee(it, n=2) --> (it1, it2 , ... itn) splits one iterator into n\n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2485 chain(p, q, ...) --> p0, p1, ... plast, q0, q1, ... \n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2486 takewhile(pred, seq) --> seq[0], seq[1], until pred fails\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2487 dropwhile(pred, seq) --> seq[n], seq[n+1], starting when pred fails\n\
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2488 groupby(iterable[, keyfunc]) --> sub-iterators grouped by value of keyfunc(v)\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2489 ");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2490
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2491
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2492 static PyMethodDef module_methods[] = {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2493 {"tee", (PyCFunction)tee, METH_VARARGS, tee_doc},
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2494 {NULL, NULL} /* sentinel */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2495 };
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2496
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2497 PyMODINIT_FUNC
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2498 inititertools(void)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2499 {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2500 int i;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2501 PyObject *m;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2502 char *name;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2503 PyTypeObject *typelist[] = {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2504 &cycle_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2505 &dropwhile_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2506 &takewhile_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2507 &islice_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2508 &starmap_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2509 &imap_type,
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2510 &chain_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2511 &ifilter_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2512 &ifilterfalse_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2513 &count_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2514 &izip_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2515 &repeat_type,
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2516 &groupby_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2517 NULL
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2518 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2519
31508 71864820402d need to initialize ob_type slot at run-time, at least on cygwin Skip Montanaro <skip@pobox.com> parents: 31501 diff changeset	2520 teedataobject_type.ob_type = &PyType_Type;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2521 m = Py_InitModule3("itertools", module_methods, module_doc);
36324 1af7f719ed28 Check return result from Py_InitModule(). This API can fail. Neal Norwitz <nnorwitz@gmail.com>* parents: 35999 diff changeset	2522 if (m == NULL)
1af7f719ed28 Check return result from Py_InitModule(). This API can fail. Neal Norwitz <nnorwitz@gmail.com>* parents: 35999 diff changeset	2523 return;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2524
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2525 for (i=0 ; typelist[i] != NULL ; i++) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2526 if (PyType_Ready(typelist[i]) < 0)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2527 return;
29225 f3f306457b43 Fixed dotted name assertion. Raymond Hettinger <python@rcn.com> parents: 28945 diff changeset	2528 name = strchr(typelist[i]->tp_name, '.');
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2529 assert (name != NULL);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2530 Py_INCREF(typelist[i]);
29225 f3f306457b43 Fixed dotted name assertion. Raymond Hettinger <python@rcn.com> parents: 28945 diff changeset	2531 PyModule_AddObject(m, name+1, (PyObject *)typelist[i]);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2532 }
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2533
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2534 if (PyType_Ready(&teedataobject_type) < 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2535 return;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2536 if (PyType_Ready(&tee_type) < 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2537 return;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2538 if (PyType_Ready(&_grouper_type) < 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2539 return;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2540 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/itertoolsmodule.c @ 39496:352ffe77b71d legacy-trunk