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

annotate Modules/itertoolsmodule.c @ 33526:175eee09cb98 legacy-trunk

Raymond reminded me to use DSU key

author	Skip Montanaro <skip@pobox.com>
date	Mon, 20 Sep 2004 16:43:30 +0000
parents	c2c49ee727d0
children	31b08670ebdd

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"
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	3
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	4 /* Itertools module written and maintained
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	5 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	6 Copyright (c) 2003 Python Software Foundation.
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	7 All rights reserved.
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	8 */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	9
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	10
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	11 /* groupby object ***********************************************************/
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	12
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	13 typedef struct {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	14 PyObject_HEAD
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	15 PyObject *it;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	16 PyObject *keyfunc;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	17 PyObject *tgtkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	18 PyObject *currkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	19 PyObject *currvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	20 } groupbyobject;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	21
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	22 static PyTypeObject groupby_type;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	23 static PyObject _grouper_create(groupbyobject , PyObject *);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	24
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	25 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	26 groupby_new(PyTypeObject type, PyObject args, PyObject *kwds)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	27 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	28 static char *kwargs[] = {"iterable", "key", NULL};
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	29 groupbyobject *gbo;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	30 PyObject it, keyfunc = Py_None;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	31
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	32 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O\|O:groupby", kwargs,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	33 &it, &keyfunc))
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	34 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	35
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	36 gbo = (groupbyobject *)type->tp_alloc(type, 0);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	37 if (gbo == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	38 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	39 gbo->tgtkey = NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	40 gbo->currkey = NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	41 gbo->currvalue = NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	42 gbo->keyfunc = keyfunc;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	43 Py_INCREF(keyfunc);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	44 gbo->it = PyObject_GetIter(it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	45 if (gbo->it == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	46 Py_DECREF(gbo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	47 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	48 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	49 return (PyObject *)gbo;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	50 }
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 static void
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	53 groupby_dealloc(groupbyobject *gbo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	54 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	55 PyObject_GC_UnTrack(gbo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	56 Py_XDECREF(gbo->it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	57 Py_XDECREF(gbo->keyfunc);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	58 Py_XDECREF(gbo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	59 Py_XDECREF(gbo->currkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	60 Py_XDECREF(gbo->currvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	61 gbo->ob_type->tp_free(gbo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	62 }
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 static int
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	65 groupby_traverse(groupbyobject gbo, visitproc visit, void arg)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	66 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	67 Py_VISIT(gbo->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	68 Py_VISIT(gbo->keyfunc);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	69 Py_VISIT(gbo->tgtkey);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	70 Py_VISIT(gbo->currkey);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	71 Py_VISIT(gbo->currvalue);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	72 return 0;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	73 }
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 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	76 groupby_next(groupbyobject *gbo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	77 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	78 PyObject newvalue, newkey, r, grouper;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	79
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	80 /* skip to next iteration group */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	81 for (;;) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	82 if (gbo->currkey == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	83 /* pass */;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	84 else if (gbo->tgtkey == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	85 break;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	86 else {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	87 int rcmp;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	88
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	89 rcmp = PyObject_RichCompareBool(gbo->tgtkey,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	90 gbo->currkey, Py_EQ);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	91 if (rcmp == -1)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	92 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	93 else if (rcmp == 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	94 break;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	95 }
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 newvalue = PyIter_Next(gbo->it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	98 if (newvalue == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	99 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	100
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	101 if (gbo->keyfunc == Py_None) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	102 newkey = newvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	103 Py_INCREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	104 } else {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	105 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	106 newvalue, NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	107 if (newkey == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	108 Py_DECREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	109 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	110 }
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 Py_XDECREF(gbo->currkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	114 gbo->currkey = newkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	115 Py_XDECREF(gbo->currvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	116 gbo->currvalue = newvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	117 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	118
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	119 Py_XDECREF(gbo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	120 gbo->tgtkey = gbo->currkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	121 Py_INCREF(gbo->currkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	122
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	123 grouper = _grouper_create(gbo, gbo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	124 if (grouper == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	125 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	126
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	127 r = PyTuple_Pack(2, gbo->currkey, grouper);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	128 Py_DECREF(grouper);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	129 return r;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	130 }
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 PyDoc_STRVAR(groupby_doc,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	133 "groupby(iterable[, keyfunc]) -> create an iterator which returns\n\
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	134 (key, sub-iterator) grouped by each value of key(value).\n");
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 static PyTypeObject groupby_type = {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	137 PyObject_HEAD_INIT(NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	138 0, /* ob_size */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	139 "itertools.groupby", /* tp_name */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	140 sizeof(groupbyobject), /* tp_basicsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	141 0, /* tp_itemsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	142 /* methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	143 (destructor)groupby_dealloc, /* tp_dealloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	144 0, /* tp_print */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	145 0, /* tp_getattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	146 0, /* tp_setattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	147 0, /* tp_compare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	148 0, /* tp_repr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	149 0, /* tp_as_number */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	150 0, /* tp_as_sequence */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	151 0, /* tp_as_mapping */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	152 0, /* tp_hash */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	153 0, /* tp_call */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	154 0, /* tp_str */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	155 PyObject_GenericGetAttr, /* tp_getattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	156 0, /* tp_setattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	157 0, /* tp_as_buffer */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	158 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	159 Py_TPFLAGS_BASETYPE, /* tp_flags */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	160 groupby_doc, /* tp_doc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	161 (traverseproc)groupby_traverse, /* tp_traverse */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	162 0, /* tp_clear */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	163 0, /* tp_richcompare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	164 0, /* tp_weaklistoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	165 PyObject_SelfIter, /* tp_iter */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	166 (iternextfunc)groupby_next, /* tp_iternext */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	167 0, /* tp_methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	168 0, /* tp_members */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	169 0, /* tp_getset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	170 0, /* tp_base */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	171 0, /* tp_dict */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	172 0, /* tp_descr_get */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	173 0, /* tp_descr_set */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	174 0, /* tp_dictoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	175 0, /* tp_init */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	176 0, /* tp_alloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	177 groupby_new, /* tp_new */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	178 PyObject_GC_Del, /* tp_free */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	179 };
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	180
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	181
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	182 /* _grouper object (internal) ************************************************/
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	183
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	184 typedef struct {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	185 PyObject_HEAD
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	186 PyObject *parent;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	187 PyObject *tgtkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	188 } _grouperobject;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	189
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	190 static PyTypeObject _grouper_type;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	191
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	192 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	193 _grouper_create(groupbyobject parent, PyObject tgtkey)
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 _grouperobject *igo;
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 igo = PyObject_New(_grouperobject, &_grouper_type);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	198 if (igo == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	199 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	200 igo->parent = (PyObject *)parent;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	201 Py_INCREF(parent);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	202 igo->tgtkey = tgtkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	203 Py_INCREF(tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	204
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	205 return (PyObject *)igo;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	206 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	207
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	208 static void
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	209 _grouper_dealloc(_grouperobject *igo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	210 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	211 Py_DECREF(igo->parent);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	212 Py_DECREF(igo->tgtkey);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	213 PyObject_Del(igo);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	214 }
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 static PyObject *
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	217 _grouper_next(_grouperobject *igo)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	218 {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	219 groupbyobject gbo = (groupbyobject )igo->parent;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	220 PyObject newvalue, newkey, *r;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	221 int rcmp;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	222
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	223 if (gbo->currvalue == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	224 newvalue = PyIter_Next(gbo->it);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	225 if (newvalue == NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	226 return NULL;
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->keyfunc == Py_None) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	229 newkey = newvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	230 Py_INCREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	231 } else {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	232 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	233 newvalue, NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	234 if (newkey == NULL) {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	235 Py_DECREF(newvalue);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	236 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	237 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	238 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	239
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	240 assert(gbo->currkey == NULL);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	241 gbo->currkey = newkey;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	242 gbo->currvalue = newvalue;
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 rcmp = PyObject_RichCompareBool(igo->tgtkey, gbo->currkey, Py_EQ);
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	247 if (rcmp <= 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	248 /* got any error or current group is end */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	249 return NULL;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	250
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	251 r = gbo->currvalue;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	252 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	253 Py_CLEAR(gbo->currkey);
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	254
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	255 return r;
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	256 }
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	257
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	258 static PyTypeObject _grouper_type = {
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	259 PyObject_HEAD_INIT(NULL)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	260 0, /* ob_size */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	261 "itertools._grouper", /* tp_name */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	262 sizeof(_grouperobject), /* tp_basicsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	263 0, /* tp_itemsize */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	264 /* methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	265 (destructor)_grouper_dealloc, /* tp_dealloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	266 0, /* tp_print */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	267 0, /* tp_getattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	268 0, /* tp_setattr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	269 0, /* tp_compare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	270 0, /* tp_repr */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	271 0, /* tp_as_number */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	272 0, /* tp_as_sequence */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	273 0, /* tp_as_mapping */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	274 0, /* tp_hash */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	275 0, /* tp_call */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	276 0, /* tp_str */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	277 PyObject_GenericGetAttr, /* tp_getattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	278 0, /* tp_setattro */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	279 0, /* tp_as_buffer */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	280 Py_TPFLAGS_DEFAULT, /* tp_flags */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	281 0, /* tp_doc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	282 0, /* tp_traverse */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	283 0, /* tp_clear */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	284 0, /* tp_richcompare */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	285 0, /* tp_weaklistoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	286 PyObject_SelfIter, /* tp_iter */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	287 (iternextfunc)_grouper_next, /* tp_iternext */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	288 0, /* tp_methods */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	289 0, /* tp_members */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	290 0, /* tp_getset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	291 0, /* tp_base */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	292 0, /* tp_dict */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	293 0, /* tp_descr_get */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	294 0, /* tp_descr_set */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	295 0, /* tp_dictoffset */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	296 0, /* tp_init */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	297 0, /* tp_alloc */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	298 0, /* tp_new */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	299 PyObject_Del, /* tp_free */
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	300 };
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	301
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	302
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	303
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	304 /* tee object and with supporting function and objects ***************/
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	305
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	306 /* 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	307 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	308 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	309 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	310 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	311 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	312 wasted space and the more rapid freeing of older data.
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	313 */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	314 #define LINKCELLS 57
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	315
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	316 typedef struct {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	317 PyObject_HEAD
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	318 PyObject *it;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	319 int numread;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	320 PyObject *nextlink;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	321 PyObject *(values[LINKCELLS]);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	322 } teedataobject;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	323
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	324 typedef struct {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	325 PyObject_HEAD
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	326 teedataobject *dataobj;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	327 int index;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	328 } teeobject;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	329
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	330 static PyTypeObject teedataobject_type;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	331
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	332 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	333 teedataobject_new(PyObject *it)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	334 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	335 teedataobject *tdo;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	336
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	337 tdo = PyObject_New(teedataobject, &teedataobject_type);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	338 if (tdo == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	339 return NULL;
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 tdo->numread = 0;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	342 tdo->nextlink = NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	343 Py_INCREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	344 tdo->it = it;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	345 return (PyObject *)tdo;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	346 }
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	347
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	348 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	349 teedataobject_jumplink(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	350 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	351 if (tdo->nextlink == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	352 tdo->nextlink = teedataobject_new(tdo->it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	353 Py_INCREF(tdo->nextlink);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	354 return tdo->nextlink;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	355 }
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 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	358 teedataobject_getitem(teedataobject *tdo, int i)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	359 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	360 PyObject *value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	361
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	362 assert(i < LINKCELLS);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	363 if (i < tdo->numread)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	364 value = tdo->values[i];
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	365 else {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	366 /* 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	367 assert(i == tdo->numread);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	368 value = PyIter_Next(tdo->it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	369 if (value == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	370 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	371 tdo->numread++;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	372 tdo->values[i] = value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	373 }
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	374 Py_INCREF(value);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	375 return value;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	376 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	377
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	378 static void
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	379 teedataobject_dealloc(teedataobject *tdo)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	380 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	381 int i;
30773 95fd55545cac Improvements to coding for itertools.tee(): Raymond Hettinger <python@rcn.com> parents: 30764 diff changeset	382
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	383 for (i=0 ; i<tdo->numread ; i++)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	384 Py_DECREF(tdo->values[i]);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	385 Py_XDECREF(tdo->it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	386 Py_XDECREF(tdo->nextlink);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	387 PyObject_Del(tdo);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	388 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	389
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	390 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	391
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	392 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	393 PyObject_HEAD_INIT(0) /* Must fill in type value later */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	394 0, /* ob_size */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	395 "itertools.tee_dataobject", /* tp_name */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	396 sizeof(teedataobject), /* tp_basicsize */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	397 0, /* tp_itemsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	398 /* methods */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	399 (destructor)teedataobject_dealloc, /* tp_dealloc */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	400 0, /* tp_print */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	401 0, /* tp_getattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	402 0, /* tp_setattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	403 0, /* tp_compare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	404 0, /* tp_repr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	405 0, /* tp_as_number */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	406 0, /* tp_as_sequence */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	407 0, /* tp_as_mapping */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	408 0, /* tp_hash */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	409 0, /* tp_call */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	410 0, /* tp_str */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	411 PyObject_GenericGetAttr, /* tp_getattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	412 0, /* tp_setattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	413 0, /* tp_as_buffer */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	414 Py_TPFLAGS_DEFAULT, /* tp_flags */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	415 teedataobject_doc, /* tp_doc */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	416 0, /* tp_traverse */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	417 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	418
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	419
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	420 static PyTypeObject tee_type;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	421
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	422 static PyObject *
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	423 tee_next(teeobject *to)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	424 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	425 PyObject value, link;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	426
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	427 if (to->index >= LINKCELLS) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	428 link = teedataobject_jumplink(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	429 Py_XDECREF(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	430 to->dataobj = (teedataobject *)link;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	431 to->index = 0;
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 value = teedataobject_getitem(to->dataobj, to->index);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	434 if (value == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	435 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	436 to->index++;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	437 return value;
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
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	440 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	441 tee_copy(teeobject *to)
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	442 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	443 teeobject *newto;
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 newto = PyObject_New(teeobject, &tee_type);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	446 if (newto == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	447 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	448 Py_INCREF(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	449 newto->dataobj = to->dataobj;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	450 newto->index = to->index;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	451 return (PyObject *)newto;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	452 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	453
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	454 PyDoc_STRVAR(teecopy_doc, "Returns an independent iterator.");
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	455
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	456 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	457 tee_fromiterable(PyObject *iterable)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	458 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	459 teeobject *to;
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	460 PyObject *it = NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	461
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	462 it = PyObject_GetIter(iterable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	463 if (it == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	464 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	465 if (PyObject_TypeCheck(it, &tee_type)) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	466 to = (teeobject )tee_copy((teeobject )it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	467 goto done;
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
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	470 to = PyObject_New(teeobject, &tee_type);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	471 if (to == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	472 goto done;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	473 to->dataobj = (teedataobject *)teedataobject_new(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	474 to->index = 0;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	475 done:
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	476 Py_XDECREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	477 return (PyObject *)to;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	478 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	479
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	480 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	481 tee_new(PyTypeObject type, PyObject args, PyObject *kw)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	482 {
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	483 PyObject *iterable;
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	484
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	485 if (!PyArg_UnpackTuple(args, "tee", 1, 1, &iterable))
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	486 return NULL;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	487 return tee_fromiterable(iterable);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	488 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	489
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	490 static void
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	491 tee_dealloc(teeobject *to)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	492 {
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	493 Py_XDECREF(to->dataobj);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	494 PyObject_Del(to);
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	495 }
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	496
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	497 PyDoc_STRVAR(teeobject_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	498 "Iterator wrapped to make it copyable");
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	499
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	500 static PyMethodDef tee_methods[] = {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	501 {"__copy__", (PyCFunction)tee_copy, METH_NOARGS, teecopy_doc},
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	502 {NULL, NULL} /* sentinel */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	503 };
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	504
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	505 static PyTypeObject tee_type = {
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	506 PyObject_HEAD_INIT(NULL)
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	507 0, /* ob_size */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	508 "itertools.tee", /* tp_name */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	509 sizeof(teeobject), /* tp_basicsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	510 0, /* tp_itemsize */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	511 /* methods */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	512 (destructor)tee_dealloc, /* tp_dealloc */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	513 0, /* tp_print */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	514 0, /* tp_getattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	515 0, /* tp_setattr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	516 0, /* tp_compare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	517 0, /* tp_repr */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	518 0, /* tp_as_number */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	519 0, /* tp_as_sequence */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	520 0, /* tp_as_mapping */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	521 0, /* tp_hash */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	522 0, /* tp_call */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	523 0, /* tp_str */
30786 225d848a5f96 Minor improvements to itertools.tee(): Raymond Hettinger <python@rcn.com> parents: 30773 diff changeset	524 0, /* tp_getattro */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	525 0, /* tp_setattro */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	526 0, /* tp_as_buffer */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	527 Py_TPFLAGS_DEFAULT, /* tp_flags */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	528 teeobject_doc, /* tp_doc */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	529 0, /* tp_traverse */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	530 0, /* tp_clear */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	531 0, /* tp_richcompare */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	532 0, /* tp_weaklistoffset */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	533 PyObject_SelfIter, /* tp_iter */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	534 (iternextfunc)tee_next, /* tp_iternext */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	535 tee_methods, /* tp_methods */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	536 0, /* tp_members */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	537 0, /* tp_getset */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	538 0, /* tp_base */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	539 0, /* tp_dict */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	540 0, /* tp_descr_get */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	541 0, /* tp_descr_set */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	542 0, /* tp_dictoffset */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	543 0, /* tp_init */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	544 0, /* tp_alloc */
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	545 tee_new, /* tp_new */
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	546 PyObject_Del, /* tp_free */
30764 b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	547 };
b948e775a79e Added itertools.tee() Raymond Hettinger <python@rcn.com> parents: 30240 diff changeset	548
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	549 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	550 tee(PyObject self, PyObject args)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	551 {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	552 int i, n=2;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	553 PyObject it, iterable, copyable, result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	554
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	555 if (!PyArg_ParseTuple(args, "O\|i", &iterable, &n))
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	556 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	557 result = PyTuple_New(n);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	558 if (result == NULL)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	559 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	560 if (n == 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	561 return result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	562 it = PyObject_GetIter(iterable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	563 if (it == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	564 Py_DECREF(result);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	565 return NULL;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	566 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	567 if (!PyObject_HasAttrString(it, "__copy__")) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	568 copyable = tee_fromiterable(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	569 Py_DECREF(it);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	570 if (copyable == NULL) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	571 Py_DECREF(result);
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 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	574 } else
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	575 copyable = it;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	576 PyTuple_SET_ITEM(result, 0, copyable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	577 for (i=1 ; i<n ; i++) {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	578 copyable = PyObject_CallMethod(copyable, "__copy__", NULL);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	579 if (copyable == 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 PyTuple_SET_ITEM(result, i, copyable);
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	584 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	585 return result;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	586 }
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	587
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	588 PyDoc_STRVAR(tee_doc,
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	589 "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	590
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	591
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	592 /* cycle object **********************************************************/
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	593
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	594 typedef struct {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	595 PyObject_HEAD
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	596 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	597 PyObject *saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	598 int firstpass;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	599 } cycleobject;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	600
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	601 static PyTypeObject cycle_type;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	602
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	603 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	604 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	605 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	606 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	607 PyObject *iterable;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	608 PyObject *saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	609 cycleobject *lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	610
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	611 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	612 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	613
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	614 /* Get iterator. */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	615 it = PyObject_GetIter(iterable);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	616 if (it == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	617 return NULL;
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 saved = PyList_New(0);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	620 if (saved == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	621 Py_DECREF(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	622 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	623 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	624
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	625 /* create cycleobject structure */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	626 lz = (cycleobject *)type->tp_alloc(type, 0);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	627 if (lz == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	628 Py_DECREF(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	629 Py_DECREF(saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	630 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	631 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	632 lz->it = it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	633 lz->saved = saved;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	634 lz->firstpass = 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	635
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	636 return (PyObject *)lz;
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
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	639 static void
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	640 cycle_dealloc(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	641 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	642 PyObject_GC_UnTrack(lz);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	643 Py_XDECREF(lz->saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	644 Py_XDECREF(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	645 lz->ob_type->tp_free(lz);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	646 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	647
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	648 static int
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	649 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	650 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	651 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	652 Py_VISIT(lz->saved);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	653 return 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
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	656 static PyObject *
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	657 cycle_next(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	658 {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	659 PyObject *item;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	660 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	661
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	662 while (1) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	663 item = PyIter_Next(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	664 if (item != NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	665 if (!lz->firstpass)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	666 PyList_Append(lz->saved, item);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	667 return item;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	668 }
32010 544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	669 if (PyErr_Occurred()) {
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	670 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	671 PyErr_Clear();
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	672 else
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	673 return NULL;
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	674 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	675 if (PyList_Size(lz->saved) == 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	676 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	677 it = PyObject_GetIter(lz->saved);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	678 if (it == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	679 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	680 Py_DECREF(lz->it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	681 lz->it = it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	682 lz->firstpass = 1;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	683 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	684 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	685
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	686 PyDoc_STRVAR(cycle_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	687 "cycle(iterable) --> cycle object\n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	688 \n\
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	689 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	690 Then repeat the sequence indefinitely.");
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	691
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	692 static PyTypeObject cycle_type = {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	693 PyObject_HEAD_INIT(NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	694 0, /* ob_size */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	695 "itertools.cycle", /* tp_name */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	696 sizeof(cycleobject), /* tp_basicsize */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	697 0, /* tp_itemsize */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	698 /* methods */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	699 (destructor)cycle_dealloc, /* tp_dealloc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	700 0, /* tp_print */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	701 0, /* tp_getattr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	702 0, /* tp_setattr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	703 0, /* tp_compare */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	704 0, /* tp_repr */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	705 0, /* tp_as_number */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	706 0, /* tp_as_sequence */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	707 0, /* tp_as_mapping */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	708 0, /* tp_hash */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	709 0, /* tp_call */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	710 0, /* tp_str */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	711 PyObject_GenericGetAttr, /* tp_getattro */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	712 0, /* tp_setattro */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	713 0, /* tp_as_buffer */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	714 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	715 Py_TPFLAGS_BASETYPE, /* tp_flags */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	716 cycle_doc, /* tp_doc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	717 (traverseproc)cycle_traverse, /* tp_traverse */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	718 0, /* tp_clear */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	719 0, /* tp_richcompare */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	720 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	721 PyObject_SelfIter, /* tp_iter */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	722 (iternextfunc)cycle_next, /* tp_iternext */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	723 0, /* tp_methods */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	724 0, /* tp_members */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	725 0, /* tp_getset */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	726 0, /* tp_base */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	727 0, /* tp_dict */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	728 0, /* tp_descr_get */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	729 0, /* tp_descr_set */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	730 0, /* tp_dictoffset */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	731 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	732 0, /* tp_alloc */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	733 cycle_new, /* tp_new */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	734 PyObject_GC_Del, /* tp_free */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	735 };
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	736
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	737
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	738 /* dropwhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	739
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	740 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	741 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	742 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	743 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	744 long start;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	745 } dropwhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	746
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	747 static PyTypeObject dropwhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	748
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	749 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	750 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	751 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	752 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	753 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	754 dropwhileobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	755
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	756 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	757 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	758
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	759 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	760 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	761 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	762 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	763
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	764 /* create dropwhileobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	765 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	766 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	767 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	768 return NULL;
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 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	771 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	772 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	773 lz->start = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	774
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	775 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	776 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	777
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	778 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	779 dropwhile_dealloc(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	780 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	781 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	782 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	783 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	784 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	785 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	786
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	787 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	788 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	789 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	790 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	791 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	792 return 0;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	795 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	796 dropwhile_next(dropwhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	797 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	798 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	799 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	800 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	801 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	802
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	803 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	804 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	805 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	806 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	807 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	808 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	809 if (lz->start == 1)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	810 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	811
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	812 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	813 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	814 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	815 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	816 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	817 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	818 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	819 if (!ok) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	820 lz->start = 1;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	821 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	822 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	823 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	824 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	825 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	826
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	827 PyDoc_STRVAR(dropwhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	828 "dropwhile(predicate, iterable) --> dropwhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	829 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	830 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	831 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	832
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	833 static PyTypeObject dropwhile_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	834 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	835 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	836 "itertools.dropwhile", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	837 sizeof(dropwhileobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	838 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	839 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	840 (destructor)dropwhile_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	841 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	842 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	843 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	844 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	845 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	846 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	847 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	848 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	849 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	850 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	851 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	852 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	853 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	854 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	855 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	856 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	857 dropwhile_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	858 (traverseproc)dropwhile_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	859 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	860 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	861 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	862 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	863 (iternextfunc)dropwhile_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	864 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	865 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	866 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	867 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	868 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	869 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	870 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	871 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	872 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	873 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	874 dropwhile_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	875 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	876 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	877
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	878
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	879 /* takewhile object **********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	880
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	881 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	882 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	883 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	884 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	885 long stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	886 } takewhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	887
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	888 static PyTypeObject takewhile_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	889
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	890 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	891 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	892 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	893 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	894 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	895 takewhileobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	896
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	897 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	898 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	899
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	900 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	901 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	902 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	903 return NULL;
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 /* create takewhileobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	906 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	907 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	908 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	909 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	910 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	911 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	912 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	913 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	914 lz->stop = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	915
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	916 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	917 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	918
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	919 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	920 takewhile_dealloc(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	921 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	922 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	923 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	924 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	925 lz->ob_type->tp_free(lz);
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	928 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	929 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	930 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	931 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	932 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	933 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	934 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	935
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	936 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	937 takewhile_next(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	938 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	939 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	940 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	941 long ok;
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 if (lz->stop == 1)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	944 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	945
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	946 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	947 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	948 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	949 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	950
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	951 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	952 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	953 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	954 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	955 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	956 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	957 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	958 if (ok)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	959 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	960 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	961 lz->stop = 1;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	962 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	963 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	964
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	965 PyDoc_STRVAR(takewhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	966 "takewhile(predicate, iterable) --> takewhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	967 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	968 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	969 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	970
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	971 static PyTypeObject takewhile_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	972 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	973 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	974 "itertools.takewhile", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	975 sizeof(takewhileobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	976 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	977 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	978 (destructor)takewhile_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	979 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	980 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	981 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	982 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	983 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	984 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	985 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	986 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	987 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	988 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	989 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	990 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	991 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	992 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	993 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	994 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	995 takewhile_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	996 (traverseproc)takewhile_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	997 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	998 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	999 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1000 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1001 (iternextfunc)takewhile_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1002 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1003 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1004 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1005 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1006 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1007 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1008 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1009 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1010 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1011 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1012 takewhile_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1013 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1014 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1015
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1016
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1017 /* islice object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1018
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1019 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1020 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1021 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1022 long next;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1023 long stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1024 long step;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1025 long cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1026 } isliceobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1027
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1028 static PyTypeObject islice_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1029
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1030 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1031 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	1032 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1033 PyObject *seq;
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1034 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	1035 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	1036 int numargs;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1037 isliceobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1038
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1039 numargs = PyTuple_Size(args);
28930 18082b2d2ebd The previous made the stop argument optional. Raymond Hettinger <python@rcn.com> parents: 28929 diff changeset	1040 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	1041 return NULL;
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 if (numargs == 2) {
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1044 if (a1 != Py_None) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1045 stop = PyInt_AsLong(a1);
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1046 if (stop == -1) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1047 if (PyErr_Occurred())
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1048 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1049 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1050 "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	1051 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1052 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1053 }
28930 18082b2d2ebd The previous made the stop argument optional. Raymond Hettinger <python@rcn.com> parents: 28929 diff changeset	1054 } else {
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1055 start = PyInt_AsLong(a1);
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1056 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	1057 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1058 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1059 "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	1060 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1061 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1062 if (a2 != Py_None) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1063 stop = PyInt_AsLong(a2);
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1064 if (stop == -1) {
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1065 if (PyErr_Occurred())
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1066 PyErr_Clear();
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1067 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1068 "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	1069 return NULL;
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1070 }
92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1071 }
27570 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
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1074 if (start<0 \|\| stop<-1) {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1075 PyErr_SetString(PyExc_ValueError,
30800 af443d820a50 Fix nits in error messages. Raymond Hettinger <python@rcn.com> parents: 30786 diff changeset	1076 "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	1077 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1078 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1079
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1080 if (step<1) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1081 PyErr_SetString(PyExc_ValueError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1082 "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	1083 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1084 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1085
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1086 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1087 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1088 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1089 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1090
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1091 /* create isliceobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1092 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	1093 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1094 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1095 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1096 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1097 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1098 lz->next = start;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1099 lz->stop = stop;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1100 lz->step = step;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1101 lz->cnt = 0L;
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 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1104 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1105
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1106 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1107 islice_dealloc(isliceobject *lz)
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 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1110 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1111 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1112 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1113
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1114 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1115 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	1116 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1117 Py_VISIT(lz->it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1118 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1119 }
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 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1122 islice_next(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1123 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1124 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1125 PyObject *it = lz->it;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1126 long oldnext;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1127 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1128
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1129 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1130 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	1131 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	1132 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1133 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1134 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1135 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1136 lz->cnt++;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1137 }
28929 92a1e585abf7 SF bug #730685: itertools.islice stop argument is not optional Raymond Hettinger <python@rcn.com> parents: 28601 diff changeset	1138 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	1139 return NULL;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1140 assert(PyIter_Check(it));
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1141 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1142 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1143 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1144 lz->cnt++;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1145 oldnext = lz->next;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1146 lz->next += lz->step;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1147 if (lz->next < oldnext) /* Check for overflow */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1148 lz->next = lz->stop;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1149 return item;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1152 PyDoc_STRVAR(islice_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1153 "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	1154 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1155 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	1156 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	1157 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	1158 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	1159 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	1160 but returns an iterator.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1161
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1162 static PyTypeObject islice_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1163 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1164 0, /* ob_size */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1165 "itertools.islice", /* tp_name */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1166 sizeof(isliceobject), /* tp_basicsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1167 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1168 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1169 (destructor)islice_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1170 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1171 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1172 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1173 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1174 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1175 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1176 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1177 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1178 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1179 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1180 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1181 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1182 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1183 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1184 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	1185 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1186 islice_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1187 (traverseproc)islice_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1188 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1189 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1190 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1191 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1192 (iternextfunc)islice_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1193 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1194 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1195 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1196 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1197 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1198 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1199 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1200 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1201 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1202 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1203 islice_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1204 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1205 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1206
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1207
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1208 /* starmap object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1209
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1210 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1211 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1212 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1213 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1214 } starmapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1215
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1216 static PyTypeObject starmap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1217
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1218 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1219 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	1220 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1221 PyObject func, seq;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1222 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1223 starmapobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1224
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1225 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	1226 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1227
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1228 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1229 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1230 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1231 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1232
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1233 /* create starmapobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1234 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	1235 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1236 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1237 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1238 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1239 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1240 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1241 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1242
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1243 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1244 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1245
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1246 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1247 starmap_dealloc(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1248 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1249 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1250 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1251 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1252 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1253 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1254
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1255 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1256 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	1257 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1258 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1259 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1260 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1261 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1262
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1263 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1264 starmap_next(starmapobject *lz)
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 PyObject *args;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1267 PyObject *result;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1268 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1269
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1270 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	1271 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	1272 if (args == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1273 return NULL;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1274 if (!PyTuple_CheckExact(args)) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1275 Py_DECREF(args);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1276 PyErr_SetString(PyExc_TypeError,
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1277 "iterator must return a tuple");
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1278 return NULL;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1279 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1280 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	1281 Py_DECREF(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1282 return result;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1283 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1284
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1285 PyDoc_STRVAR(starmap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1286 "starmap(function, sequence) --> starmap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1287 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1288 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	1289 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	1290
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1291 static PyTypeObject starmap_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1292 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1293 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1294 "itertools.starmap", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1295 sizeof(starmapobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1296 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1297 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1298 (destructor)starmap_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1299 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1300 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1301 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1302 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1303 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1304 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1305 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1306 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1307 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1308 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1309 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1310 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1311 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1312 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1313 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	1314 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1315 starmap_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1316 (traverseproc)starmap_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1317 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1318 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1319 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1320 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1321 (iternextfunc)starmap_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1322 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1323 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1324 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1325 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1326 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1327 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1328 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1329 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1330 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1331 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1332 starmap_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1333 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1334 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1335
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1336
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1337 /* imap object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1338
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1339 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1340 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1341 PyObject *iters;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1342 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1343 } imapobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1344
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1345 static PyTypeObject imap_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1346
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1347 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1348 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	1349 {
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1350 PyObject it, iters, *func;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1351 imapobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1352 int numargs, i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1353
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1354 numargs = PyTuple_Size(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1355 if (numargs < 2) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1356 PyErr_SetString(PyExc_TypeError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1357 "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	1358 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1359 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1360
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1361 iters = PyTuple_New(numargs-1);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1362 if (iters == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1363 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1364
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1365 for (i=1 ; i<numargs ; i++) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1366 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1367 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	1368 if (it == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1369 Py_DECREF(iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1370 return NULL;
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 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	1373 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1374
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1375 /* create imapobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1376 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	1377 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1378 Py_DECREF(iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1379 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1380 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1381 lz->iters = iters;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1382 func = PyTuple_GET_ITEM(args, 0);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1383 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1384 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1385
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1386 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1387 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1388
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1389 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1390 imap_dealloc(imapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1391 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1392 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1393 Py_XDECREF(lz->iters);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1394 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1395 lz->ob_type->tp_free(lz);
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1398 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1399 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	1400 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1401 Py_VISIT(lz->iters);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1402 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1403 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1404 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1405
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1406 /*
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1407 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	1408 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	1409 the following reasons:
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1410
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1411 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	1412 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	1413 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	1414 infinite iterators like count() and repeat() (for supplying sequential
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1415 or constant arguments to a function).
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1416
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1417 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	1418 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	1419 should not pass silently by automatically supplying None.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1420
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1421 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	1422 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	1423 None.
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1424
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1425 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	1426 writing: chain(iterable, repeat(None)).
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1427
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1428 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	1429 */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1430
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1431 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1432 imap_next(imapobject *lz)
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 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	1435 PyObject *argtuple;
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1436 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1437 int numargs, i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1438
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1439 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	1440 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	1441 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	1442 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1443
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1444 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	1445 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	1446 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	1447 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	1448 return NULL;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1449 }
27748 59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1450 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	1451 }
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	1452 if (lz->func == Py_None)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1453 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	1454 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	1455 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	1456 return result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1457 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1458
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1459 PyDoc_STRVAR(imap_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1460 "imap(func, *iterables) --> imap object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1461 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1462 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	1463 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	1464 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	1465 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	1466 iterables.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1467
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1468 static PyTypeObject imap_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1469 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1470 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1471 "itertools.imap", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1472 sizeof(imapobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1473 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1474 /* methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1475 (destructor)imap_dealloc, /* tp_dealloc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1476 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1477 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1478 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1479 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1480 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1481 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1482 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1483 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1484 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1485 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1486 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1487 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1488 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1489 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1490 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	1491 Py_TPFLAGS_BASETYPE, /* tp_flags */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1492 imap_doc, /* tp_doc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1493 (traverseproc)imap_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1494 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1495 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1496 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1497 PyObject_SelfIter, /* tp_iter */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1498 (iternextfunc)imap_next, /* tp_iternext */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1499 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1500 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1501 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1502 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1503 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1504 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1505 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1506 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1507 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1508 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1509 imap_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1510 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1511 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1512
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1513
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1514 /* chain object ************************************************************/
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1515
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1516 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1517 PyObject_HEAD
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1518 long tuplesize;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1519 long iternum; /* which iterator is active */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1520 PyObject ittuple; / tuple of iterators */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1521 } chainobject;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1522
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1523 static PyTypeObject chain_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1524
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1525 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1526 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	1527 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1528 chainobject *lz;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1529 int tuplesize = PySequence_Length(args);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1530 int i;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1531 PyObject *ittuple;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1532
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1533 /* obtain iterators */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1534 assert(PyTuple_Check(args));
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1535 ittuple = PyTuple_New(tuplesize);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1536 if(ittuple == NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1537 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1538 for (i=0; i < tuplesize; ++i) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1539 PyObject *item = PyTuple_GET_ITEM(args, i);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1540 PyObject *it = PyObject_GetIter(item);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1541 if (it == NULL) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1542 if (PyErr_ExceptionMatches(PyExc_TypeError))
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1543 PyErr_Format(PyExc_TypeError,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1544 "chain argument #%d must support iteration",
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1545 i+1);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1546 Py_DECREF(ittuple);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1547 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1548 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1549 PyTuple_SET_ITEM(ittuple, i, it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1550 }
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1551
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1552 /* create chainobject structure */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1553 lz = (chainobject *)type->tp_alloc(type, 0);
29522 70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1554 if (lz == NULL) {
70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1555 Py_DECREF(ittuple);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1556 return NULL;
29522 70e649fa3fcd Add missing DECREF. Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	1557 }
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1558
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1559 lz->ittuple = ittuple;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1560 lz->iternum = 0;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1561 lz->tuplesize = tuplesize;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1562
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1563 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1564 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1565
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1566 static void
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1567 chain_dealloc(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1568 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1569 PyObject_GC_UnTrack(lz);
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1570 Py_XDECREF(lz->ittuple);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1571 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1572 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1573
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1574 static int
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1575 chain_traverse(chainobject lz, visitproc visit, void arg)
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1576 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1577 Py_VISIT(lz->ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1578 return 0;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1579 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	1580
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1581 static PyObject *
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1582 chain_next(chainobject *lz)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1583 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1584 PyObject *it;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1585 PyObject *item;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1586
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1587 while (lz->iternum < lz->tuplesize) {
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1588 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	1589 item = PyIter_Next(it);
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1590 if (item != NULL)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1591 return item;
32010 544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1592 if (PyErr_Occurred()) {
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1593 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	1594 PyErr_Clear();
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1595 else
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1596 return NULL;
544f2172363d SF #950057: itertools.chain doesn't "process" exceptions as they occur Raymond Hettinger <python@rcn.com> parents: 31909 diff changeset	1597 }
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1598 lz->iternum++;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1599 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1600 return NULL;
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
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1603 PyDoc_STRVAR(chain_doc,
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1604 "chain(*iterables) --> chain object\n\
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1605 \n\
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1606 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	1607 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	1608 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	1609
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1610 static PyTypeObject chain_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1611 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1612 0, /* ob_size */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1613 "itertools.chain", /* tp_name */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1614 sizeof(chainobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1615 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1616 /* methods */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1617 (destructor)chain_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1618 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1619 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1620 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1621 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1622 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1623 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1624 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1625 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1626 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1627 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1628 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1629 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1630 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1631 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1632 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	1633 Py_TPFLAGS_BASETYPE, /* tp_flags */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1634 chain_doc, /* tp_doc */
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1635 (traverseproc)chain_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1636 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1637 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1638 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1639 PyObject_SelfIter, /* tp_iter */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1640 (iternextfunc)chain_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1641 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1642 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1643 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1644 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1645 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1646 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1647 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1648 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1649 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1650 0, /* tp_alloc */
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	1651 chain_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1652 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1653 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1654
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1655
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1656 /* ifilter object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1657
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1658 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1659 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1660 PyObject *func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1661 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1662 } ifilterobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1663
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1664 static PyTypeObject ifilter_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1665
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1666 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1667 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	1668 {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1669 PyObject func, seq;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1670 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1671 ifilterobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1672
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1673 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	1674 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1675
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1676 /* Get iterator. */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1677 it = PyObject_GetIter(seq);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1678 if (it == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1679 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1680
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1681 /* create ifilterobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1682 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	1683 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1684 Py_DECREF(it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1685 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1686 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1687 Py_INCREF(func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1688 lz->func = func;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1689 lz->it = it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1690
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1691 return (PyObject *)lz;
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 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1695 ifilter_dealloc(ifilterobject *lz)
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 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1698 Py_XDECREF(lz->func);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1699 Py_XDECREF(lz->it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1700 lz->ob_type->tp_free(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1701 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1702
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1703 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1704 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	1705 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1706 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1707 Py_VISIT(lz->func);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1708 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1709 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1710
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1711 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1712 ifilter_next(ifilterobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1713 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1714 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1715 PyObject *it = lz->it;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1716 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1717 PyObject (iternext)(PyObject *);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1718
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1719 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1720 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	1721 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1722 item = iternext(it);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1723 if (item == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1724 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1725
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1726 if (lz->func == Py_None) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1727 ok = PyObject_IsTrue(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1728 } else {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1729 PyObject *good;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1730 good = PyObject_CallFunctionObjArgs(lz->func,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1731 item, NULL);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1732 if (good == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1733 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1734 return NULL;
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 ok = PyObject_IsTrue(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1737 Py_DECREF(good);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1738 }
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1739 if (ok)
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1740 return item;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1741 Py_DECREF(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1742 }
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 PyDoc_STRVAR(ifilter_doc,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1746 "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	1747 \n\
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1748 Return those items of sequence for which function(item) is true.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1749 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	1750
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1751 static PyTypeObject ifilter_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1752 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1753 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1754 "itertools.ifilter", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1755 sizeof(ifilterobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1756 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1757 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1758 (destructor)ifilter_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1759 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1760 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1761 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1762 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1763 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1764 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1765 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1766 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1767 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1768 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1769 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1770 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1771 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1772 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1773 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	1774 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1775 ifilter_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1776 (traverseproc)ifilter_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1777 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1778 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1779 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1780 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1781 (iternextfunc)ifilter_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1782 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1783 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1784 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1785 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1786 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1787 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1788 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1789 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1790 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1791 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1792 ifilter_new, /* tp_new */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1793 PyObject_GC_Del, /* tp_free */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1794 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1795
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1796
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1797 /* ifilterfalse object ************************************************************/
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1798
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1799 typedef struct {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1800 PyObject_HEAD
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1801 PyObject *func;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1802 PyObject *it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1803 } ifilterfalseobject;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1804
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1805 static PyTypeObject ifilterfalse_type;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1806
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1807 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1808 ifilterfalse_new(PyTypeObject type, PyObject args, PyObject *kwds)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1809 {
27770 2c389a0448a4 Remove unused variable. Guido van Rossum <guido@python.org> parents: 27769 diff changeset	1810 PyObject func, seq;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1811 PyObject *it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1812 ifilterfalseobject *lz;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1813
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1814 if (!PyArg_UnpackTuple(args, "ifilterfalse", 2, 2, &func, &seq))
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1815 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1816
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1817 /* Get iterator. */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1818 it = PyObject_GetIter(seq);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1819 if (it == NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1820 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1821
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1822 /* create ifilterfalseobject structure */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1823 lz = (ifilterfalseobject *)type->tp_alloc(type, 0);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1824 if (lz == NULL) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1825 Py_DECREF(it);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1826 return NULL;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1827 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1828 Py_INCREF(func);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1829 lz->func = func;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1830 lz->it = it;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1831
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1832 return (PyObject *)lz;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1833 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1834
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1835 static void
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1836 ifilterfalse_dealloc(ifilterfalseobject *lz)
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 PyObject_GC_UnTrack(lz);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1839 Py_XDECREF(lz->func);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1840 Py_XDECREF(lz->it);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1841 lz->ob_type->tp_free(lz);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1842 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1843
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1844 static int
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1845 ifilterfalse_traverse(ifilterfalseobject lz, visitproc visit, void arg)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1846 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1847 Py_VISIT(lz->it);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	1848 Py_VISIT(lz->func);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1849 return 0;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1850 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1851
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1852 static PyObject *
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1853 ifilterfalse_next(ifilterfalseobject *lz)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1854 {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1855 PyObject *item;
28117 9b4eed4bb3e2 Several of the tools can make direct calls the inner iterators. Raymond Hettinger <python@rcn.com> parents: 28024 diff changeset	1856 PyObject *it = lz->it;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1857 long ok;
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1858 PyObject (iternext)(PyObject *);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1859
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1860 assert(PyIter_Check(it));
f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1861 iternext = *it->ob_type->tp_iternext;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1862 for (;;) {
31675 f7374e3b279a Speedup the inner loops for dropwhile(), islice(), ifilter(), and Raymond Hettinger <python@rcn.com> parents: 31508 diff changeset	1863 item = iternext(it);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1864 if (item == 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 if (lz->func == Py_None) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1868 ok = PyObject_IsTrue(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1869 } else {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1870 PyObject *good;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1871 good = PyObject_CallFunctionObjArgs(lz->func,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1872 item, NULL);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1873 if (good == NULL) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1874 Py_DECREF(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1875 return NULL;
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 ok = PyObject_IsTrue(good);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1878 Py_DECREF(good);
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 if (!ok)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1881 return item;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1882 Py_DECREF(item);
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1883 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1884 }
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1885
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1886 PyDoc_STRVAR(ifilterfalse_doc,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1887 "ifilterfalse(function or None, sequence) --> ifilterfalse object\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1888 \n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1889 Return those items of sequence for which function(item) is false.\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1890 If function is None, return the items that are false.");
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1891
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1892 static PyTypeObject ifilterfalse_type = {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1893 PyObject_HEAD_INIT(NULL)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1894 0, /* ob_size */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1895 "itertools.ifilterfalse", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1896 sizeof(ifilterfalseobject), /* tp_basicsize */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1897 0, /* tp_itemsize */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1898 /* methods */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1899 (destructor)ifilterfalse_dealloc, /* tp_dealloc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1900 0, /* tp_print */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1901 0, /* tp_getattr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1902 0, /* tp_setattr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1903 0, /* tp_compare */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1904 0, /* tp_repr */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1905 0, /* tp_as_number */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1906 0, /* tp_as_sequence */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1907 0, /* tp_as_mapping */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1908 0, /* tp_hash */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1909 0, /* tp_call */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1910 0, /* tp_str */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1911 PyObject_GenericGetAttr, /* tp_getattro */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1912 0, /* tp_setattro */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1913 0, /* tp_as_buffer */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1914 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_HAVE_GC \|
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1915 Py_TPFLAGS_BASETYPE, /* tp_flags */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1916 ifilterfalse_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1917 (traverseproc)ifilterfalse_traverse, /* tp_traverse */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1918 0, /* tp_clear */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1919 0, /* tp_richcompare */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1920 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	1921 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1922 (iternextfunc)ifilterfalse_next, /* tp_iternext */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1923 0, /* tp_methods */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1924 0, /* tp_members */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1925 0, /* tp_getset */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1926 0, /* tp_base */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1927 0, /* tp_dict */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1928 0, /* tp_descr_get */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1929 0, /* tp_descr_set */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1930 0, /* tp_dictoffset */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1931 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	1932 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1933 ifilterfalse_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1934 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1935 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1936
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1937
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1938 /* count object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1939
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1940 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1941 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1942 long cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1943 } countobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1944
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1945 static PyTypeObject count_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1946
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1947 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1948 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	1949 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1950 countobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1951 long cnt = 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1952
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1953 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	1954 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1955
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1956 /* create countobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1957 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	1958 if (lz == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1959 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1960 lz->cnt = cnt;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1961
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1962 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1963 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1964
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1965 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1966 count_next(countobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1967 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1968 return PyInt_FromLong(lz->cnt++);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1969 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1970
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	1971 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	1972 count_repr(countobject *lz)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	1973 {
31909 6b236994684a Change two instance of format strings for PyString_FromFormat() to use %ld Brett Cannon <bcannon@gmail.com> parents: 31890 diff changeset	1974 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	1975 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	1976
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1977 PyDoc_STRVAR(count_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1978 "count([firstval]) --> count object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1979 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1980 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	1981 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	1982
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	1983 static PyTypeObject count_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1984 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1985 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1986 "itertools.count", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	1987 sizeof(countobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1988 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1989 /* methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1990 (destructor)PyObject_Del, /* tp_dealloc */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1991 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1992 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1993 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1994 0, /* tp_compare */
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	1995 (reprfunc)count_repr, /* tp_repr */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1996 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1997 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1998 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	1999 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2000 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2001 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2002 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2003 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2004 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2005 Py_TPFLAGS_DEFAULT, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2006 count_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2007 0, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2008 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2009 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2010 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2011 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2012 (iternextfunc)count_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2013 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2014 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2015 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2016 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2017 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2018 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2019 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2020 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2021 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2022 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2023 count_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2024 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2025
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2026
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2027 /* izip object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2028
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2029 #include "Python.h"
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2030
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2031 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2032 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2033 long tuplesize;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2034 PyObject ittuple; / tuple of iterators */
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2035 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2036 } izipobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2037
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2038 static PyTypeObject izip_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2039
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2040 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2041 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	2042 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2043 izipobject *lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2044 int i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2045 PyObject ittuple; / tuple of iterators */
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2046 PyObject *result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2047 int tuplesize = PySequence_Length(args);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2048
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2049 /* args must be a tuple */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2050 assert(PyTuple_Check(args));
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2051
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2052 /* obtain iterators */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2053 ittuple = PyTuple_New(tuplesize);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2054 if(ittuple == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2055 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2056 for (i=0; i < tuplesize; ++i) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2057 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	2058 PyObject *it = PyObject_GetIter(item);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2059 if (it == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2060 if (PyErr_ExceptionMatches(PyExc_TypeError))
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2061 PyErr_Format(PyExc_TypeError,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2062 "izip argument #%d must support iteration",
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2063 i+1);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2064 Py_DECREF(ittuple);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2065 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2066 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2067 PyTuple_SET_ITEM(ittuple, i, it);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2068 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2069
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2070 /* create a result holder */
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2071 result = PyTuple_New(tuplesize);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2072 if (result == NULL) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2073 Py_DECREF(ittuple);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2074 return NULL;
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2075 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2076 for (i=0 ; i < tuplesize ; i++) {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2077 Py_INCREF(Py_None);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2078 PyTuple_SET_ITEM(result, i, Py_None);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2079 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2080
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2081 /* create izipobject structure */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2082 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	2083 if (lz == NULL) {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2084 Py_DECREF(ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2085 Py_DECREF(result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2086 return NULL;
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 lz->ittuple = ittuple;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2089 lz->tuplesize = tuplesize;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2090 lz->result = result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2091
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2092 return (PyObject *)lz;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2093 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2094
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2095 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2096 izip_dealloc(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2097 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2098 PyObject_GC_UnTrack(lz);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2099 Py_XDECREF(lz->ittuple);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2100 Py_XDECREF(lz->result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2101 lz->ob_type->tp_free(lz);
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2104 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2105 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	2106 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2107 Py_VISIT(lz->ittuple);
bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2108 Py_VISIT(lz->result);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2109 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2110 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2111
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2112 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2113 izip_next(izipobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2114 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2115 int i;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2116 long tuplesize = lz->tuplesize;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2117 PyObject *result = lz->result;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2118 PyObject *it;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2119 PyObject *item;
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2120 PyObject *olditem;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2121
30093 0ac4396b1894 Modified itertools.izip() to match the behavior of __builtin__.zip() Raymond Hettinger <python@rcn.com> parents: 29850 diff changeset	2122 if (tuplesize == 0)
0ac4396b1894 Modified itertools.izip() to match the behavior of __builtin__.zip() Raymond Hettinger <python@rcn.com> parents: 29850 diff changeset	2123 return NULL;
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2124 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	2125 Py_INCREF(result);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2126 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	2127 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	2128 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	2129 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	2130 if (item == NULL) {
a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2131 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	2132 return NULL;
30238 a570bb9f133f SF bug #793826: using itertools.izip to mutate tuples Raymond Hettinger <python@rcn.com> parents: 30093 diff changeset	2133 }
30240 f1ea311127cf For safety, replace a tuple entry before decreffing it. Raymond Hettinger <python@rcn.com> parents: 30238 diff changeset	2134 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	2135 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	2136 Py_DECREF(olditem);
27747 941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2137 }
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2138 } else {
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2139 result = PyTuple_New(tuplesize);
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2140 if (result == NULL)
941de791b17a SF bug #681003: itertools issues Raymond Hettinger <python@rcn.com> parents: 27570 diff changeset	2141 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	2142 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	2143 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	2144 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	2145 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	2146 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	2147 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	2148 return NULL;
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2149 }
59ae41e04ffb * Eliminated tuple re-use in imap(). Doing it correctly made the code Raymond Hettinger <python@rcn.com> parents: 27747 diff changeset	2150 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	2151 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2152 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2153 return result;
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
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2156 PyDoc_STRVAR(izip_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2157 "izip(iter1 [,iter2 [...]]) --> izip object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2158 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2159 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	2160 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	2161 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	2162 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	2163 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	2164 a list.");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2165
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2166 static PyTypeObject izip_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2167 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2168 0, /* ob_size */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2169 "itertools.izip", /* tp_name */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2170 sizeof(izipobject), /* tp_basicsize */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2171 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2172 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2173 (destructor)izip_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2174 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2175 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2176 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2177 0, /* tp_compare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2178 0, /* tp_repr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2179 0, /* tp_as_number */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2180 0, /* tp_as_sequence */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2181 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2182 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2183 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2184 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2185 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2186 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2187 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2188 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	2189 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2190 izip_doc, /* tp_doc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2191 (traverseproc)izip_traverse, /* tp_traverse */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2192 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2193 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2194 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2195 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2196 (iternextfunc)izip_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2197 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2198 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2199 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2200 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2201 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2202 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2203 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2204 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2205 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2206 0, /* tp_alloc */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2207 izip_new, /* tp_new */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2208 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2209 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2210
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2211
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2212 /* repeat object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2213
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2214 typedef struct {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2215 PyObject_HEAD
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2216 PyObject *element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2217 long cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2218 } repeatobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2219
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2220 static PyTypeObject repeat_type;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2221
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2222 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2223 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	2224 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2225 repeatobject *ro;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2226 PyObject *element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2227 long cnt = -1;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2228
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2229 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	2230 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2231
28945 001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2232 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	2233 cnt = 0;
001a90555780 * Added a substantial number of edge case and argument tests for Raymond Hettinger <python@rcn.com> parents: 28930 diff changeset	2234
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2235 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	2236 if (ro == NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2237 return NULL;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2238 Py_INCREF(element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2239 ro->element = element;
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2240 ro->cnt = cnt;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2241 return (PyObject *)ro;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2242 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2243
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2244 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2245 repeat_dealloc(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2246 {
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2247 PyObject_GC_UnTrack(ro);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2248 Py_XDECREF(ro->element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2249 ro->ob_type->tp_free(ro);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2250 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2251
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2252 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2253 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	2254 {
32682 bc4dd31c73fd Exercise Jim's VISIT macro. Raymond Hettinger <python@rcn.com> parents: 32010 diff changeset	2255 Py_VISIT(ro->element);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2256 return 0;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2257 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2258
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2259 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2260 repeat_next(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2261 {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2262 if (ro->cnt == 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2263 return NULL;
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2264 if (ro->cnt > 0)
61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2265 ro->cnt--;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2266 Py_INCREF(ro->element);
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2267 return ro->element;
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2268 }
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2269
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2270 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2271 repeat_repr(repeatobject *ro)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2272 {
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2273 PyObject result, objrepr;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2274
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2275 objrepr = PyObject_Repr(ro->element);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2276 if (objrepr == NULL)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2277 return NULL;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2278
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2279 if (ro->cnt == -1)
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2280 result = PyString_FromFormat("repeat(%s)",
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2281 PyString_AS_STRING(objrepr));
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2282 else
31909 6b236994684a Change two instance of format strings for PyString_FromFormat() to use %ld Brett Cannon <bcannon@gmail.com> parents: 31890 diff changeset	2283 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	2284 PyString_AS_STRING(objrepr), ro->cnt);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2285 Py_DECREF(objrepr);
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2286 return result;
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2287 }
848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2288
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2289 static int
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2290 repeat_len(repeatobject *ro)
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2291 {
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2292 if (ro->cnt == -1)
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2293 PyErr_SetString(PyExc_TypeError, "len() of unsized object");
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2294 return (int)(ro->cnt);
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2295 }
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2296
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2297 static PySequenceMethods repeat_as_sequence = {
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2298 (inquiry)repeat_len, /* sq_length */
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2299 0, /* sq_concat */
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2300 };
14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2301
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2302 PyDoc_STRVAR(repeat_doc,
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2303 "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	2304 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	2305 endlessly.");
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2306
29850 45dc33433323 SF patch #770521: make itertools type declarations static Raymond Hettinger <python@rcn.com> parents: 29535 diff changeset	2307 static PyTypeObject repeat_type = {
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2308 PyObject_HEAD_INIT(NULL)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2309 0, /* ob_size */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2310 "itertools.repeat", /* tp_name */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2311 sizeof(repeatobject), /* tp_basicsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2312 0, /* tp_itemsize */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2313 /* methods */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2314 (destructor)repeat_dealloc, /* tp_dealloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2315 0, /* tp_print */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2316 0, /* tp_getattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2317 0, /* tp_setattr */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2318 0, /* tp_compare */
31890 848bce2215d3 Provide more information representations of repeat() and count(). Raymond Hettinger <python@rcn.com> parents: 31675 diff changeset	2319 (reprfunc)repeat_repr, /* tp_repr */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2320 0, /* tp_as_number */
31501 14f860b03be2 Give itertools.repeat() a length method. Raymond Hettinger <python@rcn.com> parents: 31136 diff changeset	2321 &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	2322 0, /* tp_as_mapping */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2323 0, /* tp_hash */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2324 0, /* tp_call */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2325 0, /* tp_str */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2326 PyObject_GenericGetAttr, /* tp_getattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2327 0, /* tp_setattro */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2328 0, /* tp_as_buffer */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2329 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	2330 Py_TPFLAGS_BASETYPE, /* tp_flags */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2331 repeat_doc, /* tp_doc */
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2332 (traverseproc)repeat_traverse, /* tp_traverse */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2333 0, /* tp_clear */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2334 0, /* tp_richcompare */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2335 0, /* tp_weaklistoffset */
28320 fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter Raymond Hettinger <python@rcn.com> parents: 28308 diff changeset	2336 PyObject_SelfIter, /* tp_iter */
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2337 (iternextfunc)repeat_next, /* tp_iternext */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2338 0, /* tp_methods */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2339 0, /* tp_members */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2340 0, /* tp_getset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2341 0, /* tp_base */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2342 0, /* tp_dict */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2343 0, /* tp_descr_get */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2344 0, /* tp_descr_set */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2345 0, /* tp_dictoffset */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2346 0, /* tp_init */
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 29225 diff changeset	2347 0, /* tp_alloc */
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2348 repeat_new, /* tp_new */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2349 PyObject_GC_Del, /* tp_free */
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2350 };
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2351
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2352
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2353 /* module level code ********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2354
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2355 PyDoc_STRVAR(module_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2356 "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	2357 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2358 Infinite iterators:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2359 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	2360 cycle(p) --> p0, p1, ... plast, p0, p1, ...\n\
28601 58db5fbd9c28 Fix docstring typo Andrew M. Kuchling <amk@amk.ca> parents: 28320 diff changeset	2361 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	2362 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2363 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	2364 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	2365 ifilter(pred, seq) --> elements of seq where pred(elem) is True\n\
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2366 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	2367 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	2368 seq[start:stop:step]\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2369 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	2370 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	2371 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	2372 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	2373 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	2374 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	2375 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	2376 ");
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2377
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2378
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2379 static PyMethodDef module_methods[] = {
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2380 {"tee", (PyCFunction)tee, METH_VARARGS, tee_doc},
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2381 {NULL, NULL} /* sentinel */
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2382 };
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2383
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2384 PyMODINIT_FUNC
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2385 inititertools(void)
ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2386 {
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2387 int i;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2388 PyObject *m;
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2389 char *name;
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2390 PyTypeObject *typelist[] = {
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2391 &cycle_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2392 &dropwhile_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2393 &takewhile_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2394 &islice_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2395 &starmap_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2396 &imap_type,
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2397 &chain_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2398 &ifilter_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2399 &ifilterfalse_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2400 &count_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2401 &izip_type,
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2402 &repeat_type,
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2403 &groupby_type,
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2404 NULL
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2405 };
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2406
31508 71864820402d need to initialize ob_type slot at run-time, at least on cygwin Skip Montanaro <skip@pobox.com> parents: 31501 diff changeset	2407 teedataobject_type.ob_type = &PyType_Type;
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2408 m = Py_InitModule3("itertools", module_methods, module_doc);
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2409
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2410 for (i=0 ; typelist[i] != NULL ; i++) {
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2411 if (PyType_Ready(typelist[i]) < 0)
dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2412 return;
29225 f3f306457b43 Fixed dotted name assertion. Raymond Hettinger <python@rcn.com> parents: 28945 diff changeset	2413 name = strchr(typelist[i]->tp_name, '.');
28024 61fa6b55c1de User requested changes to the itertools module. Raymond Hettinger <python@rcn.com> parents: 27770 diff changeset	2414 assert (name != NULL);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2415 Py_INCREF(typelist[i]);
29225 f3f306457b43 Fixed dotted name assertion. Raymond Hettinger <python@rcn.com> parents: 28945 diff changeset	2416 PyModule_AddObject(m, name+1, (PyObject *)typelist[i]);
27769 dc5e1d918055 C Code: Raymond Hettinger <python@rcn.com> parents: 27748 diff changeset	2417 }
30900 3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2418
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2419 if (PyType_Ready(&teedataobject_type) < 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2420 return;
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2421 if (PyType_Ready(&tee_type) < 0)
3096fab2a19c Improve the implementation of itertools.tee(). Raymond Hettinger <python@rcn.com> parents: 30800 diff changeset	2422 return;
31136 fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2423 if (PyType_Ready(&_grouper_type) < 0)
fde74fadf780 Implement itertools.groupby() Raymond Hettinger <python@rcn.com> parents: 30900 diff changeset	2424 return;
27570 ba57c3daf6e9 Move itertools module from the sandbox and into production. Raymond Hettinger <python@rcn.com> parents: diff changeset	2425 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/itertoolsmodule.c @ 33526:175eee09cb98 legacy-trunk