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

annotate Modules/itertoolsmodule.c @ 40069:4eefce8bc2f7 2.4

[Partial backport of r45947 | neal.norwitz] Fix problems found by Coverity. longobject.c: also fix an ssize_t problem <a> could have been NULL, so hoist the size calc to not use <a>. [The ssize_t change isn't needed for 2.4. The other changes in this revision are to modules not present in 2.4. --amk]

author	Andrew M. Kuchling <amk@amk.ca>
date	Mon, 09 Oct 2006 18:42:49 +0000
parents	2f238a2cd189
children

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 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	29 static char *kwargs[] = {"iterable", "key", NULL};
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
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	343 tdo = PyObject_New(teedataobject, &teedataobject_type);
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;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	351 return (PyObject *)tdo;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	352 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	353
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	354 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	355 teedataobject_jumplink(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	356 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	357 if (tdo->nextlink == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	358 tdo->nextlink = teedataobject_new(tdo->it);
39973 2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	359 Py_XINCREF(tdo->nextlink);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	360 return tdo->nextlink;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	361 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	362
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	363 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	364 teedataobject_getitem(teedataobject *tdo, int i)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	365 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	366 PyObject *value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	367
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	368 assert(i < LINKCELLS);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	369 if (i < tdo->numread)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	370 value = tdo->values[i];
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	371 else {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	372 /* 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	373 assert(i == tdo->numread);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	374 value = PyIter_Next(tdo->it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	375 if (value == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	376 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	377 tdo->numread++;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	378 tdo->values[i] = value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	379 }
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	380 Py_INCREF(value);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	381 return value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	382 }
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 static void
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	385 teedataobject_dealloc(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	386 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	387 int i;
30773 95fd55545cac Improvements to coding for itertools.tee(): Raymond Hettinger <python@rcn.com> parents: 30764 diff changeset	388
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	389 for (i=0 ; i<tdo->numread ; i++)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	390 Py_DECREF(tdo->values[i]);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	391 Py_XDECREF(tdo->it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	392 Py_XDECREF(tdo->nextlink);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	393 PyObject_Del(tdo);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	394 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	395
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	396 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	397
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	398 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	399 PyObject_HEAD_INIT(0) /* Must fill in type value later */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	400 0, /* ob_size */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	401 "itertools.tee_dataobject", /* tp_name */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	402 sizeof(teedataobject), /* tp_basicsize */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	403 0, /* tp_itemsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	404 /* methods */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	405 (destructor)teedataobject_dealloc, /* tp_dealloc */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	406 0, /* tp_print */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	407 0, /* tp_getattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	408 0, /* tp_setattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	409 0, /* tp_compare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	410 0, /* tp_repr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	411 0, /* tp_as_number */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	412 0, /* tp_as_sequence */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	413 0, /* tp_as_mapping */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	414 0, /* tp_hash */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	415 0, /* tp_call */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	416 0, /* tp_str */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	417 PyObject_GenericGetAttr, /* tp_getattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	418 0, /* tp_setattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	419 0, /* tp_as_buffer */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	420 Py_TPFLAGS_DEFAULT, /* tp_flags */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	421 teedataobject_doc, /* tp_doc */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	422 0, /* tp_traverse */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	423 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	424
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	425
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	426 static PyTypeObject tee_type;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	427
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	428 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	429 tee_next(teeobject *to)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	430 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	431 PyObject value, link;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	432
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	433 if (to->index >= LINKCELLS) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	434 link = teedataobject_jumplink(to->dataobj);
39973 2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	435 Py_DECREF(to->dataobj);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	436 to->dataobj = (teedataobject *)link;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	437 to->index = 0;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	438 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	439 value = teedataobject_getitem(to->dataobj, to->index);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	440 if (value == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	441 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	442 to->index++;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	443 return value;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	444 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	445
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	446 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	447 tee_copy(teeobject *to)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	448 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	449 teeobject *newto;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	450
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	451 newto = PyObject_New(teeobject, &tee_type);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	452 if (newto == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	453 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	454 Py_INCREF(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	455 newto->dataobj = to->dataobj;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	456 newto->index = to->index;
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	457 newto->weakreflist = NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	458 return (PyObject *)newto;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	459 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	460
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	461 PyDoc_STRVAR(teecopy_doc, "Returns an independent iterator.");
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	462
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	463 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	464 tee_fromiterable(PyObject *iterable)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	465 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	466 teeobject *to;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	467 PyObject *it = NULL;
30900 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 it = PyObject_GetIter(iterable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	470 if (it == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	471 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	472 if (PyObject_TypeCheck(it, &tee_type)) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	473 to = (teeobject )tee_copy((teeobject )it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	474 goto done;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	475 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	476
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	477 to = PyObject_New(teeobject, &tee_type);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	478 if (to == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	479 goto done;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	480 to->dataobj = (teedataobject *)teedataobject_new(it);
39973 2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	481 if (!to->dataobj) {
2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	482 PyObject_GC_Del(to);
2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	483 to = NULL;
2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	484 goto done;
2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	485 }
2f238a2cd189 [Backport r50782 \| neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 39893 diff changeset	486
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	487 to->index = 0;
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	488 to->weakreflist = NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	489 done:
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	490 Py_XDECREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	491 return (PyObject *)to;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	492 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	493
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	494 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	495 tee_new(PyTypeObject type, PyObject args, PyObject *kw)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	496 {
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	497 PyObject *iterable;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	498
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	499 if (!PyArg_UnpackTuple(args, "tee", 1, 1, &iterable))
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	500 return NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	501 return tee_fromiterable(iterable);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	502 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	503
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	504 static void
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	505 tee_dealloc(teeobject *to)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	506 {
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	507 if (to->weakreflist != NULL)
e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	508 PyObject_ClearWeakRefs((PyObject *) to);
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	509 Py_XDECREF(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	510 PyObject_Del(to);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	511 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	512
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	513 PyDoc_STRVAR(teeobject_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	514 "Iterator wrapped to make it copyable");
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	515
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	516 static PyMethodDef tee_methods[] = {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	517 {"__copy__", (PyCFunction)tee_copy, METH_NOARGS, teecopy_doc},
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	518 {NULL, NULL} /* sentinel */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	519 };
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	520
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	521 static PyTypeObject tee_type = {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	522 PyObject_HEAD_INIT(NULL)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	523 0, /* ob_size */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	524 "itertools.tee", /* tp_name */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	525 sizeof(teeobject), /* tp_basicsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	526 0, /* tp_itemsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	527 /* methods */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	528 (destructor)tee_dealloc, /* tp_dealloc */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	529 0, /* tp_print */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	530 0, /* tp_getattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	531 0, /* tp_setattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	532 0, /* tp_compare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	533 0, /* tp_repr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	534 0, /* tp_as_number */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	535 0, /* tp_as_sequence */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	536 0, /* tp_as_mapping */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	537 0, /* tp_hash */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	538 0, /* tp_call */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	539 0, /* tp_str */
30786 225d848a5f96 Minor improvements to itertools.tee(): Raymond Hettinger <python@rcn.com> parents: 30773 diff changeset	540 0, /* tp_getattro */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	541 0, /* tp_setattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	542 0, /* tp_as_buffer */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	543 Py_TPFLAGS_DEFAULT, /* tp_flags */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	544 teeobject_doc, /* tp_doc */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	545 0, /* tp_traverse */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	546 0, /* tp_clear */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	547 0, /* tp_richcompare */
33777 e4b7c923ed5f Fix and test weak referencing of itertools.tee objects. Raymond Hettinger <python@rcn.com> parents: 33646 diff changeset	548 offsetof(teeobject, weakreflist), /* tp_weaklistoffset */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	549 PyObject_SelfIter, /* tp_iter */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	550 (iternextfunc)tee_next, /* tp_iternext */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	551 tee_methods, /* tp_methods */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	552 0, /* tp_members */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	553 0, /* tp_getset */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	554 0, /* tp_base */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	555 0, /* tp_dict */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	556 0, /* tp_descr_get */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	557 0, /* tp_descr_set */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	558 0, /* tp_dictoffset */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	559 0, /* tp_init */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	560 0, /* tp_alloc */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	561 tee_new, /* tp_new */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	562 PyObject_Del, /* tp_free */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	563 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	564
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	565 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	566 tee(PyObject self, PyObject args)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	567 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	568 int i, n=2;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	569 PyObject it, iterable, copyable, result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	570
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	571 if (!PyArg_ParseTuple(args, "O\|i", &iterable, &n))
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	572 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	573 result = PyTuple_New(n);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	574 if (result == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	575 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	576 if (n == 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	577 return result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	578 it = PyObject_GetIter(iterable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	579 if (it == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	580 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	581 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	582 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	583 if (!PyObject_HasAttrString(it, "__copy__")) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	584 copyable = tee_fromiterable(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	585 Py_DECREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	586 if (copyable == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	587 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	588 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	589 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	590 } else
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	591 copyable = it;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	592 PyTuple_SET_ITEM(result, 0, copyable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	593 for (i=1 ; i<n ; i++) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	594 copyable = PyObject_CallMethod(copyable, "__copy__", NULL);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	595 if (copyable == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	596 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	597 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	598 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	599 PyTuple_SET_ITEM(result, i, copyable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	600 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	601 return result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	602 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	603
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	604 PyDoc_STRVAR(tee_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	605 "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	606
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	607
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	608 /* cycle object **********************************************************/
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	609
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	610 typedef struct {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	611 PyObject_HEAD
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	612 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	613 PyObject *saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	614 int firstpass;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	615 } cycleobject;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	616
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	617 static PyTypeObject cycle_type;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	618
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	619 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	620 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	621 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	622 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	623 PyObject *iterable;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	624 PyObject *saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	625 cycleobject *lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	626
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	627 if (!_PyArg_NoKeywords("cycle()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	628 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	629
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	630 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	631 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	632
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	633 /* Get iterator. */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	634 it = PyObject_GetIter(iterable);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	635 if (it == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	636 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	637
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	638 saved = PyList_New(0);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	639 if (saved == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	640 Py_DECREF(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	641 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	642 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	643
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	644 /* create cycleobject structure */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	645 lz = (cycleobject *)type->tp_alloc(type, 0);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	646 if (lz == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	647 Py_DECREF(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	648 Py_DECREF(saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	649 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	650 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	651 lz->it = it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	652 lz->saved = saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	653 lz->firstpass = 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	654
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	655 return (PyObject *)lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	656 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	657
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	658 static void
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	659 cycle_dealloc(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	660 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	661 PyObject_GC_UnTrack(lz);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	662 Py_XDECREF(lz->saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	663 Py_XDECREF(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	664 lz->ob_type->tp_free(lz);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	665 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	666
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	667 static int
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	668 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	669 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	670 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	671 Py_VISIT(lz->saved);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	672 return 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	673 }
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 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	676 cycle_next(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	677 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	678 PyObject *item;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	679 PyObject *it;
33646 3d8d78217599 Replace structure member before decreffing. Raymond Hettinger <python@rcn.com> parents: 33616 diff changeset	680 PyObject *tmp;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	681
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	682 while (1) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	683 item = PyIter_Next(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	684 if (item != NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	685 if (!lz->firstpass)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	686 PyList_Append(lz->saved, item);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	687 return item;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	688 }
32010 544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	689 if (PyErr_Occurred()) {
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	690 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	691 PyErr_Clear();
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	692 else
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	693 return NULL;
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	694 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	695 if (PyList_Size(lz->saved) == 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	696 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	697 it = PyObject_GetIter(lz->saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	698 if (it == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	699 return NULL;
33646 3d8d78217599 Replace structure member before decreffing. Raymond Hettinger <python@rcn.com> parents: 33616 diff changeset	700 tmp = lz->it;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	701 lz->it = it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	702 lz->firstpass = 1;
33646 3d8d78217599 Replace structure member before decreffing. Raymond Hettinger <python@rcn.com> parents: 33616 diff changeset	703 Py_DECREF(tmp);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	704 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	705 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	706
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	707 PyDoc_STRVAR(cycle_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	708 "cycle(iterable) --> cycle object\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	709 \n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	710 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	711 Then repeat the sequence indefinitely.");
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	712
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	713 static PyTypeObject cycle_type = {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	714 PyObject_HEAD_INIT(NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	715 0, /* ob_size */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	716 "itertools.cycle", /* tp_name */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	717 sizeof(cycleobject), /* tp_basicsize */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	718 0, /* tp_itemsize */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	719 /* methods */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	720 (destructor)cycle_dealloc, /* tp_dealloc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	721 0, /* tp_print */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	722 0, /* tp_getattr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	723 0, /* tp_setattr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	724 0, /* tp_compare */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	725 0, /* tp_repr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	726 0, /* tp_as_number */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	727 0, /* tp_as_sequence */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	728 0, /* tp_as_mapping */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	729 0, /* tp_hash */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	730 0, /* tp_call */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	731 0, /* tp_str */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	732 PyObject_GenericGetAttr, /* tp_getattro */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	733 0, /* tp_setattro */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	734 0, /* tp_as_buffer */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	735 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	736 Py_TPFLAGS_BASETYPE, /* tp_flags */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	737 cycle_doc, /* tp_doc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	738 (traverseproc)cycle_traverse, /* tp_traverse */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	739 0, /* tp_clear */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	740 0, /* tp_richcompare */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	741 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	742 PyObject_SelfIter, /* tp_iter */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	743 (iternextfunc)cycle_next, /* tp_iternext */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	744 0, /* tp_methods */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	745 0, /* tp_members */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	746 0, /* tp_getset */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	747 0, /* tp_base */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	748 0, /* tp_dict */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	749 0, /* tp_descr_get */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	750 0, /* tp_descr_set */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	751 0, /* tp_dictoffset */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	752 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	753 0, /* tp_alloc */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	754 cycle_new, /* tp_new */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	755 PyObject_GC_Del, /* tp_free */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	756 };
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
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	759 /* dropwhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	760
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	761 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	762 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	763 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	764 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	765 long start;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	766 } dropwhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	767
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	768 static PyTypeObject dropwhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	769
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	770 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	771 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	772 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	773 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	774 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	775 dropwhileobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	776
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	777 if (!_PyArg_NoKeywords("dropwhile()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	778 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	779
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	780 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	781 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	782
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	783 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	784 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	785 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	786 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	787
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	788 /* create dropwhileobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	789 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	790 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	791 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	792 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	793 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	794 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	795 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	796 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	797 lz->start = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	798
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	799 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	800 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	801
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	802 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	803 dropwhile_dealloc(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	804 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	805 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	806 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	807 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	808 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	809 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	810
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	811 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	812 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	813 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	814 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	815 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	816 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	817 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	818
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	819 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	820 dropwhile_next(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	821 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	822 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	823 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	824 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	825 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	826
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	827 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	828 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	829 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	830 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	831 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	832 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	833 if (lz->start == 1)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	834 return item;
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 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	837 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	838 Py_DECREF(item);
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 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	842 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	843 if (!ok) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	844 lz->start = 1;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	845 return item;
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_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	848 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	849 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	850
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	851 PyDoc_STRVAR(dropwhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	852 "dropwhile(predicate, iterable) --> dropwhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	853 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	854 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	855 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	856
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	857 static PyTypeObject dropwhile_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	858 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	859 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	860 "itertools.dropwhile", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	861 sizeof(dropwhileobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	862 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	863 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	864 (destructor)dropwhile_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	865 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	866 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	867 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	868 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	869 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	870 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	871 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	872 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	873 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	874 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	875 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	876 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	877 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	878 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	879 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	880 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	881 dropwhile_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	882 (traverseproc)dropwhile_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	883 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	884 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	885 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	886 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	887 (iternextfunc)dropwhile_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	888 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	889 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	890 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	891 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	892 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	893 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	894 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	895 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	896 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	897 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	898 dropwhile_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	899 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	900 };
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 /* takewhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	904
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	905 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	906 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	907 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	908 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	909 long stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	910 } takewhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	911
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	912 static PyTypeObject takewhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	913
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	914 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	915 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	916 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	917 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	918 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	919 takewhileobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	920
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	921 if (!_PyArg_NoKeywords("takewhile()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	922 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	923
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	924 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	925 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	926
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	927 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	928 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	929 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	930 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	931
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	932 /* create takewhileobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	933 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	934 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	935 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	936 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	937 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	938 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	939 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	940 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	941 lz->stop = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	942
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	943 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	944 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	945
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	946 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	947 takewhile_dealloc(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	948 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	949 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	950 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	951 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	952 lz->ob_type->tp_free(lz);
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 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	956 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	957 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	958 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	959 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	960 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	961 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	962
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	963 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	964 takewhile_next(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	965 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	966 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	967 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	968 long ok;
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 if (lz->stop == 1)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	971 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	972
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	973 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	974 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	975 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	976 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	977
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	978 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	979 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	980 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	981 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	982 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	983 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	984 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	985 if (ok)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	986 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	987 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	988 lz->stop = 1;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	992 PyDoc_STRVAR(takewhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	993 "takewhile(predicate, iterable) --> takewhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	994 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	995 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	996 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	997
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	998 static PyTypeObject takewhile_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	999 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1000 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1001 "itertools.takewhile", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1002 sizeof(takewhileobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1003 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1004 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1005 (destructor)takewhile_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1006 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1007 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1008 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1009 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1010 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1011 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1012 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1013 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1014 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1015 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1016 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1017 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1018 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1019 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1020 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	1021 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1022 takewhile_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1023 (traverseproc)takewhile_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1024 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1025 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1026 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1027 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1028 (iternextfunc)takewhile_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1029 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1030 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1031 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1032 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1033 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1034 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1035 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1036 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1037 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1038 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1039 takewhile_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1040 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1041 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1042
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 /* islice object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1045
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1046 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1047 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1048 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1049 long next;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1050 long stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1051 long step;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1052 long cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1053 } isliceobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1054
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1055 static PyTypeObject islice_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1056
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1057 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1058 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	1059 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1060 PyObject *seq;
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1061 long start=0, stop=-1, step=1;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1062 PyObject it, a1=NULL, *a2=NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1063 int numargs;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1064 isliceobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1065
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1066 if (!_PyArg_NoKeywords("islice()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1067 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1068
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1069 numargs = PyTuple_Size(args);
28930 18082b2d2ebd The previous made the stop argument optional. Raymond Hettinger <python@rcn.com> parents: 28929 diff changeset	1070 if (!PyArg_ParseTuple(args, "OO\|Ol:islice", &seq, &a1, &a2, &step))
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1071 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1072
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1073 if (numargs == 2) {
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1074 if (a1 != Py_None) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1075 stop = PyInt_AsLong(a1);
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1076 if (stop == -1) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1077 if (PyErr_Occurred())
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1078 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1079 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1080 "Stop argument 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	1081 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1082 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1083 }
28930 18082b2d2ebd The previous made the stop argument optional. Raymond Hettinger <python@rcn.com> parents: 28929 diff changeset	1084 } else {
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1085 start = PyInt_AsLong(a1);
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1086 if (start == -1 && PyErr_Occurred()) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1087 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1088 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1089 "Start argument must be a non-negative integer.");
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1090 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1091 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1092 if (a2 != Py_None) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1093 stop = PyInt_AsLong(a2);
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1094 if (stop == -1) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1095 if (PyErr_Occurred())
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1096 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1097 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1098 "Stop argument 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	1099 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1100 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1101 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1102 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1103
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1104 if (start<0 \|\| stop<-1) {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1105 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1106 "Indices for islice() must be non-negative integers.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1107 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1108 }
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 if (step<1) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1111 PyErr_SetString(PyExc_ValueError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1112 "Step must be one or larger for islice().");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1113 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1114 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1115
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1116 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1117 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1118 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1119 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1120
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1121 /* create isliceobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1122 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	1123 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1124 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1125 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1126 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1127 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1128 lz->next = start;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1129 lz->stop = stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1130 lz->step = step;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1131 lz->cnt = 0L;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1132
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1133 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1134 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1135
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1136 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1137 islice_dealloc(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1138 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1139 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1140 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1141 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1142 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1143
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1144 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1145 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	1146 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1147 Py_VISIT(lz->it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1148 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1149 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1150
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1151 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1152 islice_next(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1153 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1154 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1155 PyObject *it = lz->it;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1156 long oldnext;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1157 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1158
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1159 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1160 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	1161 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	1162 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1163 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1164 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1165 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1166 lz->cnt++;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1167 }
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1168 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	1169 return NULL;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1170 assert(PyIter_Check(it));
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1171 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1172 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1173 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1174 lz->cnt++;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1175 oldnext = lz->next;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1176 lz->next += lz->step;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1177 if (lz->next < oldnext) /* Check for overflow */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1178 lz->next = lz->stop;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1179 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1180 }
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 PyDoc_STRVAR(islice_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1183 "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	1184 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1185 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	1186 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	1187 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	1188 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	1189 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	1190 but returns an iterator.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1191
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1192 static PyTypeObject islice_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1193 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1194 0, /* ob_size */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1195 "itertools.islice", /* tp_name */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1196 sizeof(isliceobject), /* tp_basicsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1197 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1198 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1199 (destructor)islice_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1200 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1201 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1202 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1203 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1204 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1205 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1206 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1207 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1208 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1209 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1210 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1211 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1212 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1213 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1214 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	1215 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1216 islice_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1217 (traverseproc)islice_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1218 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1219 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1220 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1221 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1222 (iternextfunc)islice_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1223 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1224 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1225 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1226 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1227 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1228 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1229 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1230 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1231 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1232 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1233 islice_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1234 PyObject_GC_Del, /* tp_free */
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1238 /* starmap object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1239
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1240 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1241 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1242 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1243 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1244 } starmapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1245
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1246 static PyTypeObject starmap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1247
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1248 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1249 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	1250 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1251 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1252 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1253 starmapobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1254
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1255 if (!_PyArg_NoKeywords("starmap()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1256 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1257
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1258 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	1259 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1260
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1261 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1262 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1263 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1264 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1265
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1266 /* create starmapobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1267 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	1268 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1269 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1270 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1271 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1272 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1273 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1274 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1275
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1276 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1277 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1278
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1279 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1280 starmap_dealloc(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1281 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1282 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1283 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1284 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1285 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1286 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1287
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1288 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1289 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	1290 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1291 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1292 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1293 return 0;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1296 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1297 starmap_next(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1298 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1299 PyObject *args;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1300 PyObject *result;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1301 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1302
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1303 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	1304 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	1305 if (args == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1306 return NULL;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1307 if (!PyTuple_CheckExact(args)) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1308 Py_DECREF(args);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1309 PyErr_SetString(PyExc_TypeError,
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1310 "iterator must return a tuple");
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1311 return NULL;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1312 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1313 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	1314 Py_DECREF(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1315 return result;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1316 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1317
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1318 PyDoc_STRVAR(starmap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1319 "starmap(function, sequence) --> starmap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1320 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1321 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	1322 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	1323
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1324 static PyTypeObject starmap_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1325 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1326 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1327 "itertools.starmap", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1328 sizeof(starmapobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1329 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1330 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1331 (destructor)starmap_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1332 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1333 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1334 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1335 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1336 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1337 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1338 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1339 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1340 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1341 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1342 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1343 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1344 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1345 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1346 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	1347 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1348 starmap_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1349 (traverseproc)starmap_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1350 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1351 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1352 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1353 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1354 (iternextfunc)starmap_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1355 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1356 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1357 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1358 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1359 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1360 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1361 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1362 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1363 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1364 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1365 starmap_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1366 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1367 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1368
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1369
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1370 /* imap object ************************************************************/
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 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1373 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1374 PyObject *iters;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1375 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1376 } imapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1377
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1378 static PyTypeObject imap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1379
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1380 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1381 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	1382 {
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1383 PyObject it, iters, *func;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1384 imapobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1385 int numargs, i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1386
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1387 if (!_PyArg_NoKeywords("imap()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1388 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1389
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1390 numargs = PyTuple_Size(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1391 if (numargs < 2) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1392 PyErr_SetString(PyExc_TypeError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1393 "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	1394 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1395 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1396
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1397 iters = PyTuple_New(numargs-1);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1398 if (iters == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1399 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1400
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1401 for (i=1 ; i<numargs ; i++) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1402 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1403 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	1404 if (it == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1405 Py_DECREF(iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1406 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1407 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1408 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	1409 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1410
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1411 /* create imapobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1412 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	1413 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1414 Py_DECREF(iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1415 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1416 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1417 lz->iters = iters;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1418 func = PyTuple_GET_ITEM(args, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1419 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1420 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1421
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1422 return (PyObject *)lz;
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 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1426 imap_dealloc(imapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1427 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1428 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1429 Py_XDECREF(lz->iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1430 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1431 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1432 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1433
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1434 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1435 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	1436 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1437 Py_VISIT(lz->iters);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1438 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1439 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1440 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1441
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1442 /*
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1443 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	1444 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	1445 the following reasons:
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1446
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1447 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	1448 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	1449 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	1450 infinite iterators like count() and repeat() (for supplying sequential
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1451 or constant arguments to a function).
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1452
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1453 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	1454 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	1455 should not pass silently by automatically supplying None.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1456
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1457 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	1458 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	1459 None.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1460
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1461 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	1462 writing: chain(iterable, repeat(None)).
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1463
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1464 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	1465 */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1466
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1467 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1468 imap_next(imapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1469 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1470 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	1471 PyObject *argtuple;
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1472 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1473 int numargs, i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1474
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1475 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	1476 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	1477 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	1478 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1479
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1480 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	1481 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	1482 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	1483 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	1484 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1485 }
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1486 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	1487 }
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1488 if (lz->func == Py_None)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1489 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	1490 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	1491 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	1492 return result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1493 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1494
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1495 PyDoc_STRVAR(imap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1496 "imap(func, *iterables) --> imap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1497 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1498 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	1499 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	1500 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	1501 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	1502 iterables.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1503
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1504 static PyTypeObject imap_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1505 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1506 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1507 "itertools.imap", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1508 sizeof(imapobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1509 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1510 /* methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1511 (destructor)imap_dealloc, /* tp_dealloc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1512 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1513 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1514 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1515 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1516 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1517 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1518 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1519 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1520 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1521 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1522 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1523 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1524 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1525 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1526 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	1527 Py_TPFLAGS_BASETYPE, /* tp_flags */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1528 imap_doc, /* tp_doc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1529 (traverseproc)imap_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1530 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1531 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1532 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1533 PyObject_SelfIter, /* tp_iter */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1534 (iternextfunc)imap_next, /* tp_iternext */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1535 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1536 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1537 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1538 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1539 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1540 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1541 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1542 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1543 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1544 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1545 imap_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1546 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1547 };
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
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1550 /* chain object ************************************************************/
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1551
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1552 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1553 PyObject_HEAD
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1554 long tuplesize;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1555 long iternum; /* which iterator is active */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1556 PyObject ittuple; / tuple of iterators */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1557 } chainobject;
27570 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 chain_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1560
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1561 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1562 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	1563 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1564 chainobject *lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1565 int tuplesize = PySequence_Length(args);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1566 int i;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1567 PyObject *ittuple;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1568
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1569 if (!_PyArg_NoKeywords("chain()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1570 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1571
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1572 /* obtain iterators */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1573 assert(PyTuple_Check(args));
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1574 ittuple = PyTuple_New(tuplesize);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1575 if(ittuple == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1576 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1577 for (i=0; i < tuplesize; ++i) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1578 PyObject *item = PyTuple_GET_ITEM(args, i);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1579 PyObject *it = PyObject_GetIter(item);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1580 if (it == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1581 if (PyErr_ExceptionMatches(PyExc_TypeError))
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1582 PyErr_Format(PyExc_TypeError,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1583 "chain argument #%d must support iteration",
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1584 i+1);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1585 Py_DECREF(ittuple);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1586 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1587 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1588 PyTuple_SET_ITEM(ittuple, i, it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1589 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1590
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1591 /* create chainobject structure */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1592 lz = (chainobject *)type->tp_alloc(type, 0);
29522 70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1593 if (lz == NULL) {
70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1594 Py_DECREF(ittuple);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1595 return NULL;
29522 70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1596 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1597
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1598 lz->ittuple = ittuple;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1599 lz->iternum = 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1600 lz->tuplesize = tuplesize;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1601
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1602 return (PyObject *)lz;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1605 static void
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1606 chain_dealloc(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1607 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1608 PyObject_GC_UnTrack(lz);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1609 Py_XDECREF(lz->ittuple);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1610 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1611 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1612
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1613 static int
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1614 chain_traverse(chainobject lz, visitproc visit, void arg)
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1615 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1616 Py_VISIT(lz->ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1617 return 0;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1618 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1619
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1620 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1621 chain_next(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1622 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1623 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1624 PyObject *item;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1625
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1626 while (lz->iternum < lz->tuplesize) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1627 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	1628 item = PyIter_Next(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1629 if (item != NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1630 return item;
32010 544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1631 if (PyErr_Occurred()) {
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1632 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	1633 PyErr_Clear();
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1634 else
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1635 return NULL;
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1636 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1637 lz->iternum++;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1638 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1639 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1640 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1641
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1642 PyDoc_STRVAR(chain_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1643 "chain(*iterables) --> chain object\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1644 \n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1645 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	1646 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	1647 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	1648
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1649 static PyTypeObject chain_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1650 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1651 0, /* ob_size */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1652 "itertools.chain", /* tp_name */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1653 sizeof(chainobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1654 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1655 /* methods */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1656 (destructor)chain_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1657 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1658 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1659 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1660 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1661 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1662 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1663 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1664 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1665 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1666 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1667 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1668 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1669 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1670 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1671 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	1672 Py_TPFLAGS_BASETYPE, /* tp_flags */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1673 chain_doc, /* tp_doc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1674 (traverseproc)chain_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1675 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1676 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1677 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1678 PyObject_SelfIter, /* tp_iter */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1679 (iternextfunc)chain_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1680 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1681 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1682 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1683 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1684 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1685 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1686 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1687 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1688 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1689 0, /* tp_alloc */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1690 chain_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1691 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1692 };
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1695 /* ifilter object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1696
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1697 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1698 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1699 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1700 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1701 } ifilterobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1702
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1703 static PyTypeObject ifilter_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1704
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1705 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1706 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	1707 {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1708 PyObject func, seq;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1709 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1710 ifilterobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1711
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1712 if (!_PyArg_NoKeywords("ifilter()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1713 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1714
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1715 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	1716 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1717
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1718 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1719 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1720 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1721 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1722
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1723 /* create ifilterobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1724 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	1725 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1726 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1727 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1728 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1729 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1730 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1731 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1732
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1733 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1734 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1735
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1736 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1737 ifilter_dealloc(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1738 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1739 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1740 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1741 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1742 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1743 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1744
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1745 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1746 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	1747 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1748 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1749 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1750 return 0;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1753 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1754 ifilter_next(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1755 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1756 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1757 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1758 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1759 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1760
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1761 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1762 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	1763 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1764 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1765 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1766 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1767
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1768 if (lz->func == Py_None) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1769 ok = PyObject_IsTrue(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1770 } else {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1771 PyObject *good;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1772 good = PyObject_CallFunctionObjArgs(lz->func,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1773 item, NULL);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1774 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1775 Py_DECREF(item);
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 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1779 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1780 }
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1781 if (ok)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1782 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1783 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1784 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1785 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1786
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1787 PyDoc_STRVAR(ifilter_doc,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1788 "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	1789 \n\
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1790 Return those items of sequence for which function(item) is true.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1791 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	1792
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1793 static PyTypeObject ifilter_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1794 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1795 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1796 "itertools.ifilter", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1797 sizeof(ifilterobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1798 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1799 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1800 (destructor)ifilter_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1801 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1802 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1803 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1804 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1805 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1806 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1807 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1808 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1809 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1810 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1811 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1812 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1813 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1814 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1815 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	1816 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1817 ifilter_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1818 (traverseproc)ifilter_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1819 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1820 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1821 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1822 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1823 (iternextfunc)ifilter_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1824 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1825 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1826 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1827 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1828 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1829 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1830 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1831 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1832 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1833 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1834 ifilter_new, /* tp_new */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1835 PyObject_GC_Del, /* tp_free */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1836 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1837
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1838
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1839 /* ifilterfalse object ************************************************************/
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1840
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1841 typedef struct {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1842 PyObject_HEAD
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1843 PyObject *func;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1844 PyObject *it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1845 } ifilterfalseobject;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1846
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1847 static PyTypeObject ifilterfalse_type;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1848
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1849 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1850 ifilterfalse_new(PyTypeObject type, PyObject args, PyObject *kwds)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1851 {
27770 2c389a0448a4 Remove unused variable. Guido van Rossum <guido@python.org> parents: 27769 diff changeset	1852 PyObject func, seq;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1853 PyObject *it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1854 ifilterfalseobject *lz;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1855
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1856 if (!_PyArg_NoKeywords("ifilterfalse()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1857 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1858
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1859 if (!PyArg_UnpackTuple(args, "ifilterfalse", 2, 2, &func, &seq))
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1860 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1861
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1862 /* Get iterator. */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1863 it = PyObject_GetIter(seq);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1864 if (it == NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1865 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1866
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1867 /* create ifilterfalseobject structure */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1868 lz = (ifilterfalseobject *)type->tp_alloc(type, 0);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1869 if (lz == NULL) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1870 Py_DECREF(it);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1871 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1872 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1873 Py_INCREF(func);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1874 lz->func = func;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1875 lz->it = it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1876
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1877 return (PyObject *)lz;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1878 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1879
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1880 static void
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1881 ifilterfalse_dealloc(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1882 {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1883 PyObject_GC_UnTrack(lz);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1884 Py_XDECREF(lz->func);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1885 Py_XDECREF(lz->it);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1886 lz->ob_type->tp_free(lz);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1887 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1888
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1889 static int
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1890 ifilterfalse_traverse(ifilterfalseobject lz, visitproc visit, void arg)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1891 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1892 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1893 Py_VISIT(lz->func);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1894 return 0;
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
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1897 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1898 ifilterfalse_next(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1899 {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1900 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1901 PyObject *it = lz->it;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1902 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1903 PyObject (iternext)(PyObject *);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1904
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1905 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1906 iternext = *it->ob_type->tp_iternext;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1907 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1908 item = iternext(it);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1909 if (item == NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1910 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1911
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1912 if (lz->func == Py_None) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1913 ok = PyObject_IsTrue(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1914 } else {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1915 PyObject *good;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1916 good = PyObject_CallFunctionObjArgs(lz->func,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1917 item, NULL);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1918 if (good == NULL) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1919 Py_DECREF(item);
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 ok = PyObject_IsTrue(good);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1923 Py_DECREF(good);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1924 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1925 if (!ok)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1926 return item;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1927 Py_DECREF(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1928 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1929 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1930
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1931 PyDoc_STRVAR(ifilterfalse_doc,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1932 "ifilterfalse(function or None, sequence) --> ifilterfalse object\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1933 \n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1934 Return those items of sequence for which function(item) is false.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1935 If function is None, return the items that are false.");
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1936
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1937 static PyTypeObject ifilterfalse_type = {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1938 PyObject_HEAD_INIT(NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1939 0, /* ob_size */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1940 "itertools.ifilterfalse", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1941 sizeof(ifilterfalseobject), /* tp_basicsize */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1942 0, /* tp_itemsize */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1943 /* methods */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1944 (destructor)ifilterfalse_dealloc, /* tp_dealloc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1945 0, /* tp_print */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1946 0, /* tp_getattr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1947 0, /* tp_setattr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1948 0, /* tp_compare */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1949 0, /* tp_repr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1950 0, /* tp_as_number */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1951 0, /* tp_as_sequence */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1952 0, /* tp_as_mapping */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1953 0, /* tp_hash */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1954 0, /* tp_call */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1955 0, /* tp_str */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1956 PyObject_GenericGetAttr, /* tp_getattro */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1957 0, /* tp_setattro */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1958 0, /* tp_as_buffer */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1959 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1960 Py_TPFLAGS_BASETYPE, /* tp_flags */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1961 ifilterfalse_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1962 (traverseproc)ifilterfalse_traverse, /* tp_traverse */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1963 0, /* tp_clear */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1964 0, /* tp_richcompare */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1965 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1966 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1967 (iternextfunc)ifilterfalse_next, /* tp_iternext */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1968 0, /* tp_methods */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1969 0, /* tp_members */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1970 0, /* tp_getset */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1971 0, /* tp_base */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1972 0, /* tp_dict */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1973 0, /* tp_descr_get */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1974 0, /* tp_descr_set */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1975 0, /* tp_dictoffset */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1976 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1977 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1978 ifilterfalse_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1979 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1980 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1981
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1982
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1983 /* count object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1984
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1985 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1986 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1987 long cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1988 } countobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1989
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1990 static PyTypeObject count_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1991
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1992 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1993 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	1994 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1995 countobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1996 long cnt = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1997
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1998 if (!_PyArg_NoKeywords("count()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	1999 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2000
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2001 if (!PyArg_ParseTuple(args, "\|l:count", &cnt))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2002 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2003
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2004 /* create countobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2005 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	2006 if (lz == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2007 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2008 lz->cnt = cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2009
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2010 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2011 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2012
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2013 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2014 count_next(countobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2015 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2016 return PyInt_FromLong(lz->cnt++);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2017 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2018
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2019 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2020 count_repr(countobject *lz)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2021 {
31909 6b236994684a Change two instance of format strings for PyString_FromFormat() to use %ld Brett Cannon <bcannon@gmail.com> parents: 31890 diff changeset	2022 return PyString_FromFormat("count(%ld)", lz->cnt);
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2023 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2024
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2025 PyDoc_STRVAR(count_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2026 "count([firstval]) --> count object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2027 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2028 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	2029 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	2030
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2031 static PyTypeObject count_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2032 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2033 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2034 "itertools.count", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2035 sizeof(countobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2036 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2037 /* methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2038 (destructor)PyObject_Del, /* tp_dealloc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2039 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2040 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2041 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2042 0, /* tp_compare */
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2043 (reprfunc)count_repr, /* tp_repr */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2044 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2045 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2046 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2047 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2048 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2049 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2050 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2051 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2052 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2053 Py_TPFLAGS_DEFAULT, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2054 count_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2055 0, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2056 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2057 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2058 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2059 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2060 (iternextfunc)count_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2061 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2062 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2063 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2064 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2065 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2066 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2067 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2068 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2069 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2070 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2071 count_new, /* tp_new */
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2074
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2075 /* izip object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2076
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2077 #include "Python.h"
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2078
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2079 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2080 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2081 long tuplesize;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2082 PyObject ittuple; / tuple of iterators */
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2083 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2084 } izipobject;
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 izip_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2087
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2088 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2089 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	2090 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2091 izipobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2092 int i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2093 PyObject ittuple; / tuple of iterators */
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2094 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2095 int tuplesize = PySequence_Length(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2096
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2097 if (!_PyArg_NoKeywords("izip()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2098 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2099
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2100 /* args must be a tuple */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2101 assert(PyTuple_Check(args));
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2102
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2103 /* obtain iterators */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2104 ittuple = PyTuple_New(tuplesize);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2105 if(ittuple == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2106 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2107 for (i=0; i < tuplesize; ++i) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2108 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	2109 PyObject *it = PyObject_GetIter(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2110 if (it == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2111 if (PyErr_ExceptionMatches(PyExc_TypeError))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2112 PyErr_Format(PyExc_TypeError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2113 "izip argument #%d must support iteration",
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2114 i+1);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2115 Py_DECREF(ittuple);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2116 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2117 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2118 PyTuple_SET_ITEM(ittuple, i, it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2119 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2120
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2121 /* create a result holder */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2122 result = PyTuple_New(tuplesize);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2123 if (result == NULL) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2124 Py_DECREF(ittuple);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2125 return NULL;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2126 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2127 for (i=0 ; i < tuplesize ; i++) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2128 Py_INCREF(Py_None);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2129 PyTuple_SET_ITEM(result, i, Py_None);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2130 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2131
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2132 /* create izipobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2133 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	2134 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2135 Py_DECREF(ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2136 Py_DECREF(result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2137 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2138 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2139 lz->ittuple = ittuple;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2140 lz->tuplesize = tuplesize;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2141 lz->result = result;
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 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2144 }
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 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2147 izip_dealloc(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2148 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2149 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2150 Py_XDECREF(lz->ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2151 Py_XDECREF(lz->result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2152 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2153 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2154
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2155 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2156 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	2157 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2158 Py_VISIT(lz->ittuple);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2159 Py_VISIT(lz->result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2160 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2161 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2162
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2163 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2164 izip_next(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2165 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2166 int i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2167 long tuplesize = lz->tuplesize;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2168 PyObject *result = lz->result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2169 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2170 PyObject *item;
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2171 PyObject *olditem;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2172
30093 0ac4396b1894 Modified itertools.izip() to match the behavior of __builtin__.zip() Raymond Hettinger <python@rcn.com> parents: 29850 diff changeset	2173 if (tuplesize == 0)
0ac4396b1894 Modified itertools.izip() to match the behavior of __builtin__.zip() Raymond Hettinger <python@rcn.com> parents: 29850 diff changeset	2174 return NULL;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2175 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	2176 Py_INCREF(result);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2177 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	2178 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	2179 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	2180 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	2181 if (item == NULL) {
a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2182 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	2183 return NULL;
30238 a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2184 }
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2185 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	2186 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	2187 Py_DECREF(olditem);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2188 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2189 } else {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2190 result = PyTuple_New(tuplesize);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2191 if (result == NULL)
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2192 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	2193 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	2194 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	2195 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	2196 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	2197 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	2198 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	2199 return NULL;
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2200 }
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2201 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	2202 }
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 return result;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2205 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2206
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2207 PyDoc_STRVAR(izip_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2208 "izip(iter1 [,iter2 [...]]) --> izip object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2209 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2210 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	2211 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	2212 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	2213 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	2214 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	2215 a list.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2216
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2217 static PyTypeObject izip_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2218 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2219 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2220 "itertools.izip", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2221 sizeof(izipobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2222 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2223 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2224 (destructor)izip_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2225 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2226 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2227 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2228 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2229 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2230 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2231 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2232 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2233 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2234 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2235 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2236 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2237 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2238 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2239 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	2240 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2241 izip_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2242 (traverseproc)izip_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2243 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2244 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2245 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2246 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2247 (iternextfunc)izip_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2248 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2249 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2250 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2251 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2252 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2253 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2254 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2255 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2256 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2257 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2258 izip_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2259 PyObject_GC_Del, /* tp_free */
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2263 /* repeat object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2264
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2265 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2266 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2267 PyObject *element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2268 long cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2269 } repeatobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2270
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2271 static PyTypeObject repeat_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2272
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2273 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2274 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	2275 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2276 repeatobject *ro;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2277 PyObject *element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2278 long cnt = -1;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2279
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2280 if (!_PyArg_NoKeywords("repeat()", kwds))
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2281 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 33779 diff changeset	2282
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2283 if (!PyArg_ParseTuple(args, "O\|l:repeat", &element, &cnt))
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2284 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2285
28945 001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2286 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	2287 cnt = 0;
001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2288
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2289 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	2290 if (ro == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2291 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2292 Py_INCREF(element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2293 ro->element = element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2294 ro->cnt = cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2295 return (PyObject *)ro;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2296 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2297
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2298 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2299 repeat_dealloc(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2300 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2301 PyObject_GC_UnTrack(ro);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2302 Py_XDECREF(ro->element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2303 ro->ob_type->tp_free(ro);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2304 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2305
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2306 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2307 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	2308 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2309 Py_VISIT(ro->element);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2310 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2311 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2312
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2313 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2314 repeat_next(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2315 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2316 if (ro->cnt == 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2317 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2318 if (ro->cnt > 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2319 ro->cnt--;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2320 Py_INCREF(ro->element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2321 return ro->element;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2322 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2323
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2324 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2325 repeat_repr(repeatobject *ro)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2326 {
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2327 PyObject result, objrepr;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2328
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2329 objrepr = PyObject_Repr(ro->element);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2330 if (objrepr == NULL)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2331 return NULL;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2332
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2333 if (ro->cnt == -1)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2334 result = PyString_FromFormat("repeat(%s)",
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2335 PyString_AS_STRING(objrepr));
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2336 else
31909 6b236994684a Change two instance of format strings for PyString_FromFormat() to use %ld Brett Cannon <bcannon@gmail.com> parents: 31890 diff changeset	2337 result = PyString_FromFormat("repeat(%s, %ld)",
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2338 PyString_AS_STRING(objrepr), ro->cnt);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2339 Py_DECREF(objrepr);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2340 return result;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2341 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2342
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2343 static int
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2344 repeat_len(repeatobject *ro)
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2345 {
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2346 if (ro->cnt == -1)
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2347 PyErr_SetString(PyExc_TypeError, "len() of unsized object");
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2348 return (int)(ro->cnt);
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2349 }
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2350
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2351 static PySequenceMethods repeat_as_sequence = {
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2352 (inquiry)repeat_len, /* sq_length */
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2353 0, /* sq_concat */
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2354 };
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2355
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2356 PyDoc_STRVAR(repeat_doc,
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2357 "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	2358 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	2359 endlessly.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2360
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2361 static PyTypeObject repeat_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2362 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2363 0, /* ob_size */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2364 "itertools.repeat", /* tp_name */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2365 sizeof(repeatobject), /* tp_basicsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2366 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2367 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2368 (destructor)repeat_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2369 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2370 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2371 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2372 0, /* tp_compare */
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2373 (reprfunc)repeat_repr, /* tp_repr */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2374 0, /* tp_as_number */
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2375 &repeat_as_sequence, /* tp_as_sequence */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2376 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2377 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2378 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2379 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2380 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2381 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2382 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2383 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	2384 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2385 repeat_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2386 (traverseproc)repeat_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2387 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2388 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2389 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2390 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2391 (iternextfunc)repeat_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2392 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2393 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2394 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2395 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2396 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2397 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2398 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2399 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2400 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2401 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2402 repeat_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2403 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2404 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2405
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2406
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2407 /* module level code ********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2408
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2409 PyDoc_STRVAR(module_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2410 "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	2411 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2412 Infinite iterators:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2413 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	2414 cycle(p) --> p0, p1, ... plast, p0, p1, ...\n\
28601 58db5fbd9c28 Fix docstring typo Andrew M. Kuchling <amk@amk.ca> parents: 28320 diff changeset	2415 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	2416 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2417 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	2418 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	2419 ifilter(pred, seq) --> elements of seq where pred(elem) is True\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2420 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	2421 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	2422 seq[start:stop:step]\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2423 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	2424 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	2425 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	2426 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	2427 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	2428 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	2429 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	2430 ");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2431
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2432
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2433 static PyMethodDef module_methods[] = {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2434 {"tee", (PyCFunction)tee, METH_VARARGS, tee_doc},
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2435 {NULL, NULL} /* sentinel */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2436 };
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2437
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2438 PyMODINIT_FUNC
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2439 inititertools(void)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2440 {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2441 int i;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2442 PyObject *m;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2443 char *name;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2444 PyTypeObject *typelist[] = {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2445 &cycle_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2446 &dropwhile_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2447 &takewhile_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2448 &islice_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2449 &starmap_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2450 &imap_type,
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2451 &chain_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2452 &ifilter_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2453 &ifilterfalse_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2454 &count_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2455 &izip_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2456 &repeat_type,
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2457 &groupby_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2458 NULL
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2459 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2460
31508 71864820402d need to initialize ob_type slot at run-time, at least on cygwin Skip Montanaro <skip@pobox.com> parents: 31501 diff changeset	2461 teedataobject_type.ob_type = &PyType_Type;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2462 m = Py_InitModule3("itertools", module_methods, module_doc);
39893 6fb46e87d5f9 [Backport of rev. 42093 by neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 35450 diff changeset	2463 if (m == NULL)
6fb46e87d5f9 [Backport of rev. 42093 by neal.norwitz] Andrew M. Kuchling <amk@amk.ca> parents: 35450 diff changeset	2464 return;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2465
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2466 for (i=0 ; typelist[i] != NULL ; i++) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2467 if (PyType_Ready(typelist[i]) < 0)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2468 return;
29225 f3f306457b43 Fixed dotted name assertion. Raymond Hettinger <python@rcn.com> parents: 28945 diff changeset	2469 name = strchr(typelist[i]->tp_name, '.');
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2470 assert (name != NULL);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2471 Py_INCREF(typelist[i]);
29225 f3f306457b43 Fixed dotted name assertion. Raymond Hettinger <python@rcn.com> parents: 28945 diff changeset	2472 PyModule_AddObject(m, name+1, (PyObject *)typelist[i]);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2473 }
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2474
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2475 if (PyType_Ready(&teedataobject_type) < 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2476 return;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2477 if (PyType_Ready(&tee_type) < 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2478 return;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2479 if (PyType_Ready(&_grouper_type) < 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2480 return;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2481 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/itertoolsmodule.c @ 40069:4eefce8bc2f7 2.4