Mercurial > cpython-lru_cache-weakref

annotate Modules/itertoolsmodule.c @ 76370:00a07720a570

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Issue #14599: Fix an import caching race condition.
author Brett Cannon <brett@python.org>
date Mon, 16 Apr 2012 20:50:33 -0400
parents 4ff234337e24
children d274fa027cf5
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rev   line source
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1
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2 #include "Python.h"
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3 #include "structmember.h"
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4
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5 /* Itertools module written and maintained
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6 by Raymond D. Hettinger <python@rcn.com>
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7 Copyright (c) 2003 Python Software Foundation.
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8 All rights reserved.
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9 */
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10
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12 /* groupby object ***********************************************************/
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13
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14 typedef struct {
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15 PyObject_HEAD
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16 PyObject *it;
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17 PyObject *keyfunc;
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18 PyObject *tgtkey;
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19 PyObject *currkey;
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20 PyObject *currvalue;
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21 } groupbyobject;
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22
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23 static PyTypeObject groupby_type;
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24 static PyObject *_grouper_create(groupbyobject *, PyObject *);
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25
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26 static PyObject *
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27 groupby_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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28 {
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29 static char *kwargs[] = {"iterable", "key", NULL};
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30 groupbyobject *gbo;
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31 PyObject *it, *keyfunc = Py_None;
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32
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33 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:groupby", kwargs,
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34 &it, &keyfunc))
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35 return NULL;
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36
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37 gbo = (groupbyobject *)type->tp_alloc(type, 0);
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38 if (gbo == NULL)
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39 return NULL;
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40 gbo->tgtkey = NULL;
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41 gbo->currkey = NULL;
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42 gbo->currvalue = NULL;
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43 gbo->keyfunc = keyfunc;
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44 Py_INCREF(keyfunc);
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45 gbo->it = PyObject_GetIter(it);
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46 if (gbo->it == NULL) {
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47 Py_DECREF(gbo);
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48 return NULL;
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49 }
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50 return (PyObject *)gbo;
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51 }
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52
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53 static void
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54 groupby_dealloc(groupbyobject *gbo)
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55 {
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56 PyObject_GC_UnTrack(gbo);
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57 Py_XDECREF(gbo->it);
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58 Py_XDECREF(gbo->keyfunc);
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59 Py_XDECREF(gbo->tgtkey);
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60 Py_XDECREF(gbo->currkey);
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61 Py_XDECREF(gbo->currvalue);
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62 Py_TYPE(gbo)->tp_free(gbo);
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63 }
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64
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65 static int
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66 groupby_traverse(groupbyobject *gbo, visitproc visit, void *arg)
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67 {
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68 Py_VISIT(gbo->it);
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69 Py_VISIT(gbo->keyfunc);
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70 Py_VISIT(gbo->tgtkey);
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71 Py_VISIT(gbo->currkey);
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72 Py_VISIT(gbo->currvalue);
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73 return 0;
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74 }
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75
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76 static PyObject *
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77 groupby_next(groupbyobject *gbo)
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78 {
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79 PyObject *newvalue, *newkey, *r, *grouper, *tmp;
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80
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81 /* skip to next iteration group */
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82 for (;;) {
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83 if (gbo->currkey == NULL)
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84 /* pass */;
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85 else if (gbo->tgtkey == NULL)
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86 break;
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87 else {
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88 int rcmp;
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89
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90 rcmp = PyObject_RichCompareBool(gbo->tgtkey,
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91 gbo->currkey, Py_EQ);
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92 if (rcmp == -1)
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93 return NULL;
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94 else if (rcmp == 0)
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95 break;
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96 }
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97
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98 newvalue = PyIter_Next(gbo->it);
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99 if (newvalue == NULL)
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100 return NULL;
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101
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102 if (gbo->keyfunc == Py_None) {
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103 newkey = newvalue;
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104 Py_INCREF(newvalue);
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105 } else {
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106 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
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107 newvalue, NULL);
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108 if (newkey == NULL) {
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109 Py_DECREF(newvalue);
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110 return NULL;
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111 }
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112 }
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113
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114 tmp = gbo->currkey;
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115 gbo->currkey = newkey;
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116 Py_XDECREF(tmp);
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117
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118 tmp = gbo->currvalue;
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119 gbo->currvalue = newvalue;
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120 Py_XDECREF(tmp);
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121 }
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122
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123 Py_INCREF(gbo->currkey);
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124 tmp = gbo->tgtkey;
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125 gbo->tgtkey = gbo->currkey;
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126 Py_XDECREF(tmp);
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127
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128 grouper = _grouper_create(gbo, gbo->tgtkey);
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129 if (grouper == NULL)
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130 return NULL;
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131
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132 r = PyTuple_Pack(2, gbo->currkey, grouper);
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133 Py_DECREF(grouper);
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134 return r;
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135 }
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136
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137 static PyObject *
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138 groupby_reduce(groupbyobject *lz)
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139 {
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140 /* reduce as a 'new' call with an optional 'setstate' if groupby
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141 * has started
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142 */
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143 PyObject *value;
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144 if (lz->tgtkey && lz->currkey && lz->currvalue)
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145 value = Py_BuildValue("O(OO)(OOO)", Py_TYPE(lz),
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146 lz->it, lz->keyfunc, lz->currkey, lz->currvalue, lz->tgtkey);
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147 else
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148 value = Py_BuildValue("O(OO)", Py_TYPE(lz),
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149 lz->it, lz->keyfunc);
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150
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151 return value;
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152 }
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153
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154 PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
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155
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156 static PyObject *
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157 groupby_setstate(groupbyobject *lz, PyObject *state)
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158 {
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159 PyObject *currkey, *currvalue, *tgtkey;
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160 if (!PyArg_ParseTuple(state, "OOO", &currkey, &currvalue, &tgtkey))
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161 return NULL;
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162 Py_CLEAR(lz->currkey);
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163 lz->currkey = currkey;
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164 Py_INCREF(lz->currkey);
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165 Py_CLEAR(lz->currvalue);
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166 lz->currvalue = currvalue;
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167 Py_INCREF(lz->currvalue);
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168 Py_CLEAR(lz->tgtkey);
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169 lz->tgtkey = tgtkey;
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170 Py_INCREF(lz->tgtkey);
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171 Py_RETURN_NONE;
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172 }
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173
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174 PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
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175
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176 static PyMethodDef groupby_methods[] = {
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177 {"__reduce__", (PyCFunction)groupby_reduce, METH_NOARGS,
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178 reduce_doc},
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179 {"__setstate__", (PyCFunction)groupby_setstate, METH_O,
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180 setstate_doc},
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181 {NULL, NULL} /* sentinel */
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182 };
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183
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184 PyDoc_STRVAR(groupby_doc,
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185 "groupby(iterable[, keyfunc]) -> create an iterator which returns\n\
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186 (key, sub-iterator) grouped by each value of key(value).\n");
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187
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188 static PyTypeObject groupby_type = {
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189 PyVarObject_HEAD_INIT(NULL, 0)
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190 "itertools.groupby", /* tp_name */
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191 sizeof(groupbyobject), /* tp_basicsize */
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192 0, /* tp_itemsize */
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193 /* methods */
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194 (destructor)groupby_dealloc, /* tp_dealloc */
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195 0, /* tp_print */
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196 0, /* tp_getattr */
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197 0, /* tp_setattr */
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198 0, /* tp_reserved */
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199 0, /* tp_repr */
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200 0, /* tp_as_number */
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201 0, /* tp_as_sequence */
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202 0, /* tp_as_mapping */
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203 0, /* tp_hash */
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204 0, /* tp_call */
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205 0, /* tp_str */
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206 PyObject_GenericGetAttr, /* tp_getattro */
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207 0, /* tp_setattro */
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208 0, /* tp_as_buffer */
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209 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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210 Py_TPFLAGS_BASETYPE, /* tp_flags */
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211 groupby_doc, /* tp_doc */
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212 (traverseproc)groupby_traverse, /* tp_traverse */
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213 0, /* tp_clear */
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214 0, /* tp_richcompare */
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215 0, /* tp_weaklistoffset */
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216 PyObject_SelfIter, /* tp_iter */
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217 (iternextfunc)groupby_next, /* tp_iternext */
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218 groupby_methods, /* tp_methods */
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219 0, /* tp_members */
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220 0, /* tp_getset */
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221 0, /* tp_base */
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222 0, /* tp_dict */
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223 0, /* tp_descr_get */
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224 0, /* tp_descr_set */
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225 0, /* tp_dictoffset */
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226 0, /* tp_init */
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227 0, /* tp_alloc */
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228 groupby_new, /* tp_new */
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229 PyObject_GC_Del, /* tp_free */
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230 };
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231
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232
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233 /* _grouper object (internal) ************************************************/
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234
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235 typedef struct {
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236 PyObject_HEAD
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237 PyObject *parent;
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238 PyObject *tgtkey;
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239 } _grouperobject;
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240
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241 static PyTypeObject _grouper_type;
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242
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243 static PyObject *
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244 _grouper_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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245 {
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246 PyObject *parent, *tgtkey;
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247
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248 if (!PyArg_ParseTuple(args, "O!O", &groupby_type, &parent, &tgtkey))
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249 return NULL;
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250
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251 return _grouper_create((groupbyobject*) parent, tgtkey);
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252 }
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253
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254 static PyObject *
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255 _grouper_create(groupbyobject *parent, PyObject *tgtkey)
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256 {
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257 _grouperobject *igo;
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258
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259 igo = PyObject_GC_New(_grouperobject, &_grouper_type);
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260 if (igo == NULL)
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261 return NULL;
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262 igo->parent = (PyObject *)parent;
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263 Py_INCREF(parent);
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264 igo->tgtkey = tgtkey;
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265 Py_INCREF(tgtkey);
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266
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267 PyObject_GC_Track(igo);
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268 return (PyObject *)igo;
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269 }
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270
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271 static void
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272 _grouper_dealloc(_grouperobject *igo)
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273 {
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274 PyObject_GC_UnTrack(igo);
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275 Py_DECREF(igo->parent);
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276 Py_DECREF(igo->tgtkey);
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277 PyObject_GC_Del(igo);
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278 }
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279
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280 static int
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281 _grouper_traverse(_grouperobject *igo, visitproc visit, void *arg)
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282 {
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283 Py_VISIT(igo->parent);
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284 Py_VISIT(igo->tgtkey);
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285 return 0;
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286 }
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287
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288 static PyObject *
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289 _grouper_next(_grouperobject *igo)
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290 {
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291 groupbyobject *gbo = (groupbyobject *)igo->parent;
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292 PyObject *newvalue, *newkey, *r;
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293 int rcmp;
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294
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295 if (gbo->currvalue == NULL) {
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296 newvalue = PyIter_Next(gbo->it);
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297 if (newvalue == NULL)
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298 return NULL;
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299
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300 if (gbo->keyfunc == Py_None) {
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301 newkey = newvalue;
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302 Py_INCREF(newvalue);
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303 } else {
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304 newkey = PyObject_CallFunctionObjArgs(gbo->keyfunc,
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305 newvalue, NULL);
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306 if (newkey == NULL) {
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307 Py_DECREF(newvalue);
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308 return NULL;
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309 }
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310 }
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311
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312 assert(gbo->currkey == NULL);
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313 gbo->currkey = newkey;
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314 gbo->currvalue = newvalue;
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315 }
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316
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317 assert(gbo->currkey != NULL);
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318 rcmp = PyObject_RichCompareBool(igo->tgtkey, gbo->currkey, Py_EQ);
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319 if (rcmp <= 0)
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320 /* got any error or current group is end */
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321 return NULL;
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322
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323 r = gbo->currvalue;
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324 gbo->currvalue = NULL;
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325 Py_CLEAR(gbo->currkey);
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326
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327 return r;
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328 }
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329
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330 static PyObject *
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331 _grouper_reduce(_grouperobject *lz)
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332 {
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333 return Py_BuildValue("O(OO)", Py_TYPE(lz),
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334 lz->parent, lz->tgtkey);
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335 }
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336
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337 static PyMethodDef _grouper_methods[] = {
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338 {"__reduce__", (PyCFunction)_grouper_reduce, METH_NOARGS,
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339 reduce_doc},
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340 {NULL, NULL} /* sentinel */
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341 };
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342
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343
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344 static PyTypeObject _grouper_type = {
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345 PyVarObject_HEAD_INIT(NULL, 0)
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346 "itertools._grouper", /* tp_name */
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347 sizeof(_grouperobject), /* tp_basicsize */
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348 0, /* tp_itemsize */
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349 /* methods */
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350 (destructor)_grouper_dealloc, /* tp_dealloc */
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351 0, /* tp_print */
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352 0, /* tp_getattr */
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353 0, /* tp_setattr */
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354 0, /* tp_reserved */
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355 0, /* tp_repr */
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356 0, /* tp_as_number */
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357 0, /* tp_as_sequence */
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358 0, /* tp_as_mapping */
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359 0, /* tp_hash */
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360 0, /* tp_call */
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361 0, /* tp_str */
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362 PyObject_GenericGetAttr, /* tp_getattro */
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363 0, /* tp_setattro */
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364 0, /* tp_as_buffer */
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365 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
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366 0, /* tp_doc */
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367 (traverseproc)_grouper_traverse,/* tp_traverse */
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368 0, /* tp_clear */
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369 0, /* tp_richcompare */
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370 0, /* tp_weaklistoffset */
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371 PyObject_SelfIter, /* tp_iter */
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372 (iternextfunc)_grouper_next, /* tp_iternext */
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373 _grouper_methods, /* tp_methods */
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374 0, /* tp_members */
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375 0, /* tp_getset */
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376 0, /* tp_base */
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377 0, /* tp_dict */
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378 0, /* tp_descr_get */
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379 0, /* tp_descr_set */
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380 0, /* tp_dictoffset */
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381 0, /* tp_init */
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382 0, /* tp_alloc */
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383 _grouper_new, /* tp_new */
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384 PyObject_GC_Del, /* tp_free */
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385 };
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386
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387
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388
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389 /* tee object and with supporting function and objects ***************/
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390
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391 /* The teedataobject pre-allocates space for LINKCELLS number of objects.
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392 To help the object fit neatly inside cache lines (space for 16 to 32
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393 pointers), the value should be a multiple of 16 minus space for
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394 the other structure members including PyHEAD overhead. The larger the
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395 value, the less memory overhead per object and the less time spent
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396 allocating/deallocating new links. The smaller the number, the less
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397 wasted space and the more rapid freeing of older data.
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398 */
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399 #define LINKCELLS 57
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400
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401 typedef struct {
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402 PyObject_HEAD
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403 PyObject *it;
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404 int numread;
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405 PyObject *nextlink;
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406 PyObject *(values[LINKCELLS]);
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407 } teedataobject;
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408
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409 typedef struct {
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410 PyObject_HEAD
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411 teedataobject *dataobj;
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412 int index;
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413 PyObject *weakreflist;
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414 } teeobject;
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415
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416 static PyTypeObject teedataobject_type;
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417
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418 static PyObject *
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419 teedataobject_newinternal(PyObject *it)
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420 {
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421 teedataobject *tdo;
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422
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423 tdo = PyObject_GC_New(teedataobject, &teedataobject_type);
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424 if (tdo == NULL)
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425 return NULL;
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426
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427 tdo->numread = 0;
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428 tdo->nextlink = NULL;
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429 Py_INCREF(it);
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430 tdo->it = it;
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431 PyObject_GC_Track(tdo);
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432 return (PyObject *)tdo;
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433 }
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434
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435 static PyObject *
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436 teedataobject_jumplink(teedataobject *tdo)
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437 {
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438 if (tdo->nextlink == NULL)
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439 tdo->nextlink = teedataobject_newinternal(tdo->it);
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440 Py_XINCREF(tdo->nextlink);
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441 return tdo->nextlink;
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442 }
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443
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444 static PyObject *
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445 teedataobject_getitem(teedataobject *tdo, int i)
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446 {
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447 PyObject *value;
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448
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449 assert(i < LINKCELLS);
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450 if (i < tdo->numread)
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451 value = tdo->values[i];
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452 else {
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453 /* this is the lead iterator, so fetch more data */
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454 assert(i == tdo->numread);
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455 value = PyIter_Next(tdo->it);
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456 if (value == NULL)
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457 return NULL;
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458 tdo->numread++;
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459 tdo->values[i] = value;
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460 }
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461 Py_INCREF(value);
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462 return value;
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463 }
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464
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465 static int
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466 teedataobject_traverse(teedataobject *tdo, visitproc visit, void * arg)
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467 {
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468 int i;
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469 Py_VISIT(tdo->it);
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470 for (i = 0; i < tdo->numread; i++)
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471 Py_VISIT(tdo->values[i]);
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472 Py_VISIT(tdo->nextlink);
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473 return 0;
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474 }
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475
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476 static int
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477 teedataobject_clear(teedataobject *tdo)
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478 {
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479 int i;
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480 Py_CLEAR(tdo->it);
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481 for (i=0 ; i<tdo->numread ; i++)
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482 Py_CLEAR(tdo->values[i]);
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483 Py_CLEAR(tdo->nextlink);
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484 return 0;
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485 }
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486
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487 static void
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488 teedataobject_dealloc(teedataobject *tdo)
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489 {
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490 PyObject_GC_UnTrack(tdo);
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491 teedataobject_clear(tdo);
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492 PyObject_GC_Del(tdo);
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493 }
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494
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495 static PyObject *
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496 teedataobject_reduce(teedataobject *tdo)
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497 {
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498 int i;
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499 /* create a temporary list of already iterated values */
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500 PyObject *values = PyList_New(tdo->numread);
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501 if (!values)
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502 return NULL;
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503 for (i=0 ; i<tdo->numread ; i++) {
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504 Py_INCREF(tdo->values[i]);
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505 PyList_SET_ITEM(values, i, tdo->values[i]);
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506 }
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507 return Py_BuildValue("O(ONO)", Py_TYPE(tdo), tdo->it,
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508 values,
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509 tdo->nextlink ? tdo->nextlink : Py_None);
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510 }
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511
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512 static PyTypeObject teedataobject_type;
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513
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514 static PyObject *
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515 teedataobject_new(PyTypeObject *type, PyObject *args, PyObject *kw)
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516 {
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517 teedataobject *tdo;
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518 PyObject *it, *values, *next;
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519 Py_ssize_t i, len;
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520
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diff changeset
521 assert(type == &teedataobject_type);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
522 if (!PyArg_ParseTuple(args, "OO!O", &it, &PyList_Type, &values, &next))
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
523 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
524
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
525 tdo = (teedataobject *)teedataobject_newinternal(it);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
526 if (!tdo)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
527 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
528
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
529 len = PyList_GET_SIZE(values);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
530 if (len > LINKCELLS)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
531 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
532 for (i=0; i<len; i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
533 tdo->values[i] = PyList_GET_ITEM(values, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
534 Py_INCREF(tdo->values[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
535 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
536 tdo->numread = len;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
537
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
538 if (len == LINKCELLS) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
539 if (next != Py_None) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
540 if (Py_TYPE(next) != &teedataobject_type)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
541 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
542 assert(tdo->nextlink == NULL);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
543 Py_INCREF(next);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
544 tdo->nextlink = next;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
545 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
546 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
547 if (next != Py_None)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
548 goto err; /* shouldn't have a next if we are not full */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
549 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
550 return (PyObject*)tdo;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
551
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
552 err:
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
553 Py_XDECREF(tdo);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
554 PyErr_SetString(PyExc_ValueError, "Invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
555 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
556 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
557
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
558 static PyMethodDef teedataobject_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
559 {"__reduce__", (PyCFunction)teedataobject_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
560 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
561 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
562 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
563
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
564 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
565
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
566 static PyTypeObject teedataobject_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
567 PyVarObject_HEAD_INIT(0, 0) /* Must fill in type value later */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
568 "itertools._tee_dataobject", /* tp_name */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
569 sizeof(teedataobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
570 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
571 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
572 (destructor)teedataobject_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
573 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
574 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
575 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
576 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
577 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
578 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
579 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
580 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
581 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
582 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
583 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
584 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
585 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
586 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
587 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
588 teedataobject_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
589 (traverseproc)teedataobject_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
590 (inquiry)teedataobject_clear, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
591 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
592 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
593 0, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
594 0, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
595 teedataobject_methods, /* tp_methods */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
596 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
597 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
598 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
599 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
600 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
601 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
602 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
603 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
604 0, /* tp_alloc */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
605 teedataobject_new, /* tp_new */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
606 PyObject_GC_Del, /* tp_free */
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
607 };
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
608
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
609
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
610 static PyTypeObject tee_type;
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
611
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
612 static PyObject *
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
613 tee_next(teeobject *to)
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
614 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
615 PyObject *value, *link;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
616
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
617 if (to->index >= LINKCELLS) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
618 link = teedataobject_jumplink(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
619 Py_DECREF(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
620 to->dataobj = (teedataobject *)link;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
621 to->index = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
622 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
623 value = teedataobject_getitem(to->dataobj, to->index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
624 if (value == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
625 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
626 to->index++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
627 return value;
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
628 }
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
629
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
630 static int
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
631 tee_traverse(teeobject *to, visitproc visit, void *arg)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
632 {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
633 Py_VISIT((PyObject *)to->dataobj);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
634 return 0;
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
635 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
636
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
637 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
638 tee_copy(teeobject *to)
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
639 {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
640 teeobject *newto;
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parents: 57525
diff changeset
641
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
642 newto = PyObject_GC_New(teeobject, &tee_type);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
643 if (newto == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
644 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
645 Py_INCREF(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
646 newto->dataobj = to->dataobj;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
647 newto->index = to->index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
648 newto->weakreflist = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
649 PyObject_GC_Track(newto);
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diff changeset
650 return (PyObject *)newto;
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parents: 30800
diff changeset
651 }
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
652
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
653 PyDoc_STRVAR(teecopy_doc, "Returns an independent iterator.");
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
654
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
655 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
656 tee_fromiterable(PyObject *iterable)
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
657 {
61466
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diff changeset
658 teeobject *to;
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diff changeset
659 PyObject *it = NULL;
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diff changeset
660
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diff changeset
661 it = PyObject_GetIter(iterable);
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diff changeset
662 if (it == NULL)
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parents: 57525
diff changeset
663 return NULL;
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parents: 57525
diff changeset
664 if (PyObject_TypeCheck(it, &tee_type)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
665 to = (teeobject *)tee_copy((teeobject *)it);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
666 goto done;
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diff changeset
667 }
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diff changeset
668
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diff changeset
669 to = PyObject_GC_New(teeobject, &tee_type);
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diff changeset
670 if (to == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
671 goto done;
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
672 to->dataobj = (teedataobject *)teedataobject_newinternal(it);
61466
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673 if (!to->dataobj) {
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diff changeset
674 PyObject_GC_Del(to);
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diff changeset
675 to = NULL;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
676 goto done;
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diff changeset
677 }
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diff changeset
678
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
679 to->index = 0;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
680 to->weakreflist = NULL;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
681 PyObject_GC_Track(to);
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
682 done:
61466
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diff changeset
683 Py_XDECREF(it);
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diff changeset
684 return (PyObject *)to;
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
685 }
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
686
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
687 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
688 tee_new(PyTypeObject *type, PyObject *args, PyObject *kw)
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
689 {
61466
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parents: 57525
diff changeset
690 PyObject *iterable;
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parents: 57525
diff changeset
691
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
692 if (!PyArg_UnpackTuple(args, "_tee", 1, 1, &iterable))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
693 return NULL;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
694 return tee_fromiterable(iterable);
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
695 }
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
696
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
697 static int
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
698 tee_clear(teeobject *to)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
699 {
61466
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diff changeset
700 if (to->weakreflist != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
701 PyObject_ClearWeakRefs((PyObject *) to);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
702 Py_CLEAR(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
703 return 0;
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
704 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
705
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
706 static void
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
707 tee_dealloc(teeobject *to)
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
708 {
61466
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parents: 57525
diff changeset
709 PyObject_GC_UnTrack(to);
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parents: 57525
diff changeset
710 tee_clear(to);
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parents: 57525
diff changeset
711 PyObject_GC_Del(to);
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
712 }
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
713
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
714 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
715 tee_reduce(teeobject *to)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
716 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
717 return Py_BuildValue("O(())(Oi)", Py_TYPE(to), to->dataobj, to->index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
718 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
719
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
720 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
721 tee_setstate(teeobject *to, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
722 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
723 teedataobject *tdo;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
724 int index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
725 if (!PyArg_ParseTuple(state, "O!i", &teedataobject_type, &tdo, &index))
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
726 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
727 if (index < 0 || index > LINKCELLS) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
728 PyErr_SetString(PyExc_ValueError, "Index out of range");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
729 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
730 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
731 Py_CLEAR(to->dataobj);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
732 to->dataobj = tdo;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
733 Py_INCREF(to->dataobj);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
734 to->index = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
735 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
736 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
737
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
738 PyDoc_STRVAR(teeobject_doc,
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
739 "Iterator wrapped to make it copyable");
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
740
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
741 static PyMethodDef tee_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
742 {"__copy__", (PyCFunction)tee_copy, METH_NOARGS, teecopy_doc},
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
743 {"__reduce__", (PyCFunction)tee_reduce, METH_NOARGS, reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
744 {"__setstate__", (PyCFunction)tee_setstate, METH_O, setstate_doc},
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
745 {NULL, NULL} /* sentinel */
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
746 };
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
747
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
748 static PyTypeObject tee_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
749 PyVarObject_HEAD_INIT(NULL, 0)
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
750 "itertools._tee", /* tp_name */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
751 sizeof(teeobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
752 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
753 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
754 (destructor)tee_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
755 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
756 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
757 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
758 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
759 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
760 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
761 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
762 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
763 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
764 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
765 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
766 0, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
767 0, /* tp_setattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
768 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
769 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
770 teeobject_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
771 (traverseproc)tee_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
772 (inquiry)tee_clear, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
773 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
774 offsetof(teeobject, weakreflist), /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
775 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
776 (iternextfunc)tee_next, /* tp_iternext */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
777 tee_methods, /* tp_methods */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
778 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
779 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
780 0, /* tp_base */
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diff changeset
781 0, /* tp_dict */
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diff changeset
782 0, /* tp_descr_get */
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diff changeset
783 0, /* tp_descr_set */
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diff changeset
784 0, /* tp_dictoffset */
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diff changeset
785 0, /* tp_init */
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diff changeset
786 0, /* tp_alloc */
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diff changeset
787 tee_new, /* tp_new */
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diff changeset
788 PyObject_GC_Del, /* tp_free */
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
789 };
b948e775a79e Added itertools.tee()
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diff changeset
790
30900
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
791 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
792 tee(PyObject *self, PyObject *args)
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
793 {
61466
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794 Py_ssize_t i, n=2;
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diff changeset
795 PyObject *it, *iterable, *copyable, *result;
72926
db4aa878cea2 Port SetAttrString/HasAttrString to SetAttrId/GetAttrId.
Martin v. Löwis <martin@v.loewis.de>
parents: 72925
diff changeset
796 _Py_IDENTIFIER(__copy__);
61466
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797
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798 if (!PyArg_ParseTuple(args, "O|n", &iterable, &n))
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799 return NULL;
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800 if (n < 0) {
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801 PyErr_SetString(PyExc_ValueError, "n must be >= 0");
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802 return NULL;
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803 }
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804 result = PyTuple_New(n);
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805 if (result == NULL)
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806 return NULL;
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807 if (n == 0)
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808 return result;
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809 it = PyObject_GetIter(iterable);
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810 if (it == NULL) {
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811 Py_DECREF(result);
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812 return NULL;
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813 }
72926
db4aa878cea2 Port SetAttrString/HasAttrString to SetAttrId/GetAttrId.
Martin v. Löwis <martin@v.loewis.de>
parents: 72925
diff changeset
814 if (!_PyObject_HasAttrId(it, &PyId___copy__)) {
61466
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815 copyable = tee_fromiterable(it);
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816 Py_DECREF(it);
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817 if (copyable == NULL) {
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818 Py_DECREF(result);
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819 return NULL;
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820 }
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821 } else
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822 copyable = it;
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823 PyTuple_SET_ITEM(result, 0, copyable);
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diff changeset
824 for (i=1 ; i<n ; i++) {
72835
5e33219492bc Add API for static strings, primarily good for identifiers.
Martin v. Löwis <martin@v.loewis.de>
parents: 72460
diff changeset
825
5e33219492bc Add API for static strings, primarily good for identifiers.
Martin v. Löwis <martin@v.loewis.de>
parents: 72460
diff changeset
826 copyable = _PyObject_CallMethodId(copyable, &PyId___copy__, NULL);
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827 if (copyable == NULL) {
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828 Py_DECREF(result);
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829 return NULL;
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830 }
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831 PyTuple_SET_ITEM(result, i, copyable);
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832 }
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833 return result;
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parents: 30800
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834 }
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835
3096fab2a19c Improve the implementation of itertools.tee().
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parents: 30800
diff changeset
836 PyDoc_STRVAR(tee_doc,
3096fab2a19c Improve the implementation of itertools.tee().
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parents: 30800
diff changeset
837 "tee(iterable, n=2) --> tuple of n independent iterators.");
3096fab2a19c Improve the implementation of itertools.tee().
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parents: 30800
diff changeset
838
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
839
28024
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diff changeset
840 /* cycle object **********************************************************/
61fa6b55c1de User requested changes to the itertools module.
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841
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diff changeset
842 typedef struct {
61466
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843 PyObject_HEAD
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844 PyObject *it;
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845 PyObject *saved;
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846 int firstpass;
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Raymond Hettinger <python@rcn.com>
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847 } cycleobject;
61fa6b55c1de User requested changes to the itertools module.
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848
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45dc33433323 SF patch #770521: make itertools type declarations static
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parents: 29535
diff changeset
849 static PyTypeObject cycle_type;
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850
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diff changeset
851 static PyObject *
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
852 cycle_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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parents: 27770
diff changeset
853 {
61466
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854 PyObject *it;
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855 PyObject *iterable;
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856 PyObject *saved;
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diff changeset
857 cycleobject *lz;
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858
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859 if (type == &cycle_type && !_PyArg_NoKeywords("cycle()", kwds))
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860 return NULL;
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861
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862 if (!PyArg_UnpackTuple(args, "cycle", 1, 1, &iterable))
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863 return NULL;
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864
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865 /* Get iterator. */
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866 it = PyObject_GetIter(iterable);
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867 if (it == NULL)
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868 return NULL;
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diff changeset
869
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870 saved = PyList_New(0);
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871 if (saved == NULL) {
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872 Py_DECREF(it);
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873 return NULL;
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874 }
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875
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876 /* create cycleobject structure */
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diff changeset
877 lz = (cycleobject *)type->tp_alloc(type, 0);
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878 if (lz == NULL) {
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879 Py_DECREF(it);
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880 Py_DECREF(saved);
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881 return NULL;
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882 }
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883 lz->it = it;
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884 lz->saved = saved;
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885 lz->firstpass = 0;
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886
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887 return (PyObject *)lz;
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888 }
61fa6b55c1de User requested changes to the itertools module.
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889
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
890 static void
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891 cycle_dealloc(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module.
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892 {
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893 PyObject_GC_UnTrack(lz);
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894 Py_XDECREF(lz->saved);
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895 Py_XDECREF(lz->it);
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896 Py_TYPE(lz)->tp_free(lz);
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897 }
61fa6b55c1de User requested changes to the itertools module.
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898
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
899 static int
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diff changeset
900 cycle_traverse(cycleobject *lz, visitproc visit, void *arg)
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
901 {
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902 Py_VISIT(lz->it);
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903 Py_VISIT(lz->saved);
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904 return 0;
28024
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905 }
61fa6b55c1de User requested changes to the itertools module.
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906
61fa6b55c1de User requested changes to the itertools module.
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907 static PyObject *
61fa6b55c1de User requested changes to the itertools module.
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908 cycle_next(cycleobject *lz)
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
909 {
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910 PyObject *item;
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911 PyObject *it;
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912 PyObject *tmp;
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913
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914 while (1) {
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915 item = PyIter_Next(lz->it);
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916 if (item != NULL) {
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917 if (!lz->firstpass && PyList_Append(lz->saved, item)) {
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918 Py_DECREF(item);
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919 return NULL;
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920 }
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921 return item;
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922 }
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923 if (PyErr_Occurred()) {
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924 if (PyErr_ExceptionMatches(PyExc_StopIteration))
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925 PyErr_Clear();
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diff changeset
926 else
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diff changeset
927 return NULL;
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diff changeset
928 }
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929 if (PyList_Size(lz->saved) == 0)
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930 return NULL;
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diff changeset
931 it = PyObject_GetIter(lz->saved);
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932 if (it == NULL)
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933 return NULL;
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934 tmp = lz->it;
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935 lz->it = it;
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936 lz->firstpass = 1;
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937 Py_DECREF(tmp);
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938 }
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61fa6b55c1de User requested changes to the itertools module.
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parents: 27770
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939 }
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
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940
76091
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941 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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942 cycle_reduce(cycleobject *lz)
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943 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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944 /* Create a new cycle with the iterator tuple, then set
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
945 * the saved state on it.
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946 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
947 return Py_BuildValue("O(O)(Oi)", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
948 lz->it, lz->saved, lz->firstpass);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
949 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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950
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parents: 72926
diff changeset
951 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
952 cycle_setstate(cycleobject *lz, PyObject *state)
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
953 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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954 PyObject *saved=NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
955 int firstpass;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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956 if (!PyArg_ParseTuple(state, "Oi", &saved, &firstpass))
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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957 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
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958 Py_CLEAR(lz->saved);
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959 lz->saved = saved;
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960 Py_XINCREF(lz->saved);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
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961 lz->firstpass = firstpass != 0;
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parents: 72926
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962 Py_RETURN_NONE;
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parents: 72926
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963 }
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964
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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965 static PyMethodDef cycle_methods[] = {
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parents: 72926
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966 {"__reduce__", (PyCFunction)cycle_reduce, METH_NOARGS,
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967 reduce_doc},
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diff changeset
968 {"__setstate__", (PyCFunction)cycle_setstate, METH_O,
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969 setstate_doc},
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970 {NULL, NULL} /* sentinel */
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971 };
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972
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973 PyDoc_STRVAR(cycle_doc,
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974 "cycle(iterable) --> cycle object\n\
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975 \n\
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976 Return elements from the iterable until it is exhausted.\n\
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
977 Then repeat the sequence indefinitely.");
61fa6b55c1de User requested changes to the itertools module.
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parents: 27770
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978
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979 static PyTypeObject cycle_type = {
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980 PyVarObject_HEAD_INIT(NULL, 0)
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981 "itertools.cycle", /* tp_name */
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982 sizeof(cycleobject), /* tp_basicsize */
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983 0, /* tp_itemsize */
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984 /* methods */
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985 (destructor)cycle_dealloc, /* tp_dealloc */
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986 0, /* tp_print */
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987 0, /* tp_getattr */
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988 0, /* tp_setattr */
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989 0, /* tp_reserved */
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990 0, /* tp_repr */
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991 0, /* tp_as_number */
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992 0, /* tp_as_sequence */
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993 0, /* tp_as_mapping */
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994 0, /* tp_hash */
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995 0, /* tp_call */
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996 0, /* tp_str */
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997 PyObject_GenericGetAttr, /* tp_getattro */
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998 0, /* tp_setattro */
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999 0, /* tp_as_buffer */
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1000 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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1001 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1002 cycle_doc, /* tp_doc */
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1003 (traverseproc)cycle_traverse, /* tp_traverse */
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1004 0, /* tp_clear */
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1005 0, /* tp_richcompare */
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1006 0, /* tp_weaklistoffset */
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1007 PyObject_SelfIter, /* tp_iter */
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1008 (iternextfunc)cycle_next, /* tp_iternext */
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1009 cycle_methods, /* tp_methods */
61466
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1010 0, /* tp_members */
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1011 0, /* tp_getset */
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1012 0, /* tp_base */
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1013 0, /* tp_dict */
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1014 0, /* tp_descr_get */
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1015 0, /* tp_descr_set */
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1016 0, /* tp_dictoffset */
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1017 0, /* tp_init */
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1018 0, /* tp_alloc */
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diff changeset
1019 cycle_new, /* tp_new */
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diff changeset
1020 PyObject_GC_Del, /* tp_free */
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1021 };
61fa6b55c1de User requested changes to the itertools module.
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1022
61fa6b55c1de User requested changes to the itertools module.
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1023
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1024 /* dropwhile object **********************************************************/
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1025
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diff changeset
1026 typedef struct {
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1027 PyObject_HEAD
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1028 PyObject *func;
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1029 PyObject *it;
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1030 long start;
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diff changeset
1031 } dropwhileobject;
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diff changeset
1032
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parents: 29535
diff changeset
1033 static PyTypeObject dropwhile_type;
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diff changeset
1034
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diff changeset
1035 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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parents:
diff changeset
1036 dropwhile_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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parents:
diff changeset
1037 {
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1038 PyObject *func, *seq;
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1039 PyObject *it;
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1040 dropwhileobject *lz;
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1041
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1042 if (type == &dropwhile_type && !_PyArg_NoKeywords("dropwhile()", kwds))
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1043 return NULL;
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1044
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1045 if (!PyArg_UnpackTuple(args, "dropwhile", 2, 2, &func, &seq))
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1046 return NULL;
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1047
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diff changeset
1048 /* Get iterator. */
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1049 it = PyObject_GetIter(seq);
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1050 if (it == NULL)
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1051 return NULL;
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1052
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1053 /* create dropwhileobject structure */
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1054 lz = (dropwhileobject *)type->tp_alloc(type, 0);
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1055 if (lz == NULL) {
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1056 Py_DECREF(it);
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1057 return NULL;
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1058 }
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1059 Py_INCREF(func);
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1060 lz->func = func;
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1061 lz->it = it;
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1062 lz->start = 0;
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1063
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1064 return (PyObject *)lz;
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1065 }
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1066
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1067 static void
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1068 dropwhile_dealloc(dropwhileobject *lz)
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1069 {
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1070 PyObject_GC_UnTrack(lz);
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1071 Py_XDECREF(lz->func);
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1072 Py_XDECREF(lz->it);
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1073 Py_TYPE(lz)->tp_free(lz);
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1074 }
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1075
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1076 static int
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1077 dropwhile_traverse(dropwhileobject *lz, visitproc visit, void *arg)
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1078 {
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1079 Py_VISIT(lz->it);
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1080 Py_VISIT(lz->func);
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1081 return 0;
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1082 }
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1083
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1084 static PyObject *
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1085 dropwhile_next(dropwhileobject *lz)
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1086 {
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1087 PyObject *item, *good;
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1088 PyObject *it = lz->it;
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1089 long ok;
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1090 PyObject *(*iternext)(PyObject *);
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1091
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1092 iternext = *Py_TYPE(it)->tp_iternext;
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1093 for (;;) {
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1094 item = iternext(it);
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1095 if (item == NULL)
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1096 return NULL;
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1097 if (lz->start == 1)
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1098 return item;
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1099
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1100 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
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1101 if (good == NULL) {
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1102 Py_DECREF(item);
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1103 return NULL;
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1104 }
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1105 ok = PyObject_IsTrue(good);
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1106 Py_DECREF(good);
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1107 if (!ok) {
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1108 lz->start = 1;
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1109 return item;
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1110 }
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1111 Py_DECREF(item);
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1112 }
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1113 }
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1114
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1115 static PyObject *
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1116 dropwhile_reduce(dropwhileobject *lz)
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1117 {
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1118 return Py_BuildValue("O(OO)l", Py_TYPE(lz),
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1119 lz->func, lz->it, lz->start);
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1120 }
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1121
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1122 static PyObject *
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1123 dropwhile_setstate(dropwhileobject *lz, PyObject *state)
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1124 {
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1125 int start = PyObject_IsTrue(state);
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1126 if (start == -1)
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1127 return NULL;
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1128 lz->start = start;
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1129 Py_RETURN_NONE;
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1130 }
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1131
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1132 static PyMethodDef dropwhile_methods[] = {
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1133 {"__reduce__", (PyCFunction)dropwhile_reduce, METH_NOARGS,
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diff changeset
1134 reduce_doc},
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diff changeset
1135 {"__setstate__", (PyCFunction)dropwhile_setstate, METH_O,
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1136 setstate_doc},
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1137 {NULL, NULL} /* sentinel */
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1138 };
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1139
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1140 PyDoc_STRVAR(dropwhile_doc,
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1141 "dropwhile(predicate, iterable) --> dropwhile object\n\
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1142 \n\
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1143 Drop items from the iterable while predicate(item) is true.\n\
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1144 Afterwards, return every element until the iterable is exhausted.");
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1145
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45dc33433323 SF patch #770521: make itertools type declarations static
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1146 static PyTypeObject dropwhile_type = {
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1147 PyVarObject_HEAD_INIT(NULL, 0)
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1148 "itertools.dropwhile", /* tp_name */
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1149 sizeof(dropwhileobject), /* tp_basicsize */
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1150 0, /* tp_itemsize */
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1151 /* methods */
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1152 (destructor)dropwhile_dealloc, /* tp_dealloc */
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1153 0, /* tp_print */
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1154 0, /* tp_getattr */
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1155 0, /* tp_setattr */
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1156 0, /* tp_reserved */
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1157 0, /* tp_repr */
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1158 0, /* tp_as_number */
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1159 0, /* tp_as_sequence */
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1160 0, /* tp_as_mapping */
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1161 0, /* tp_hash */
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1162 0, /* tp_call */
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1163 0, /* tp_str */
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1164 PyObject_GenericGetAttr, /* tp_getattro */
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1165 0, /* tp_setattro */
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1166 0, /* tp_as_buffer */
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1167 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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1168 Py_TPFLAGS_BASETYPE, /* tp_flags */
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1169 dropwhile_doc, /* tp_doc */
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1170 (traverseproc)dropwhile_traverse, /* tp_traverse */
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1171 0, /* tp_clear */
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1172 0, /* tp_richcompare */
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1173 0, /* tp_weaklistoffset */
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1174 PyObject_SelfIter, /* tp_iter */
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1175 (iternextfunc)dropwhile_next, /* tp_iternext */
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1176 dropwhile_methods, /* tp_methods */
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1177 0, /* tp_members */
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1178 0, /* tp_getset */
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1179 0, /* tp_base */
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diff changeset
1180 0, /* tp_dict */
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1181 0, /* tp_descr_get */
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1182 0, /* tp_descr_set */
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1183 0, /* tp_dictoffset */
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1184 0, /* tp_init */
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1185 0, /* tp_alloc */
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diff changeset
1186 dropwhile_new, /* tp_new */
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diff changeset
1187 PyObject_GC_Del, /* tp_free */
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diff changeset
1188 };
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1189
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diff changeset
1190
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1191 /* takewhile object **********************************************************/
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1192
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1193 typedef struct {
61466
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1194 PyObject_HEAD
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1195 PyObject *func;
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1196 PyObject *it;
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1197 long stop;
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1198 } takewhileobject;
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1199
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1200 static PyTypeObject takewhile_type;
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1201
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1202 static PyObject *
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1203 takewhile_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1204 {
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1205 PyObject *func, *seq;
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diff changeset
1206 PyObject *it;
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diff changeset
1207 takewhileobject *lz;
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1208
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diff changeset
1209 if (type == &takewhile_type && !_PyArg_NoKeywords("takewhile()", kwds))
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1210 return NULL;
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1211
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1212 if (!PyArg_UnpackTuple(args, "takewhile", 2, 2, &func, &seq))
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diff changeset
1213 return NULL;
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1214
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1215 /* Get iterator. */
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diff changeset
1216 it = PyObject_GetIter(seq);
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1217 if (it == NULL)
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1218 return NULL;
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1219
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1220 /* create takewhileobject structure */
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1221 lz = (takewhileobject *)type->tp_alloc(type, 0);
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1222 if (lz == NULL) {
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1223 Py_DECREF(it);
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1224 return NULL;
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1225 }
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1226 Py_INCREF(func);
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diff changeset
1227 lz->func = func;
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1228 lz->it = it;
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1229 lz->stop = 0;
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1230
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1231 return (PyObject *)lz;
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1232 }
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1233
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1234 static void
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1235 takewhile_dealloc(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1236 {
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1237 PyObject_GC_UnTrack(lz);
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1238 Py_XDECREF(lz->func);
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diff changeset
1239 Py_XDECREF(lz->it);
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1240 Py_TYPE(lz)->tp_free(lz);
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1241 }
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1242
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1243 static int
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1244 takewhile_traverse(takewhileobject *lz, visitproc visit, void *arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1245 {
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1246 Py_VISIT(lz->it);
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1247 Py_VISIT(lz->func);
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1248 return 0;
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1249 }
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1250
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1251 static PyObject *
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1252 takewhile_next(takewhileobject *lz)
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1253 {
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1254 PyObject *item, *good;
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1255 PyObject *it = lz->it;
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diff changeset
1256 long ok;
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1257
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1258 if (lz->stop == 1)
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1259 return NULL;
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diff changeset
1260
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diff changeset
1261 item = (*Py_TYPE(it)->tp_iternext)(it);
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diff changeset
1262 if (item == NULL)
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1263 return NULL;
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1264
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1265 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
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1266 if (good == NULL) {
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1267 Py_DECREF(item);
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1268 return NULL;
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1269 }
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1270 ok = PyObject_IsTrue(good);
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1271 Py_DECREF(good);
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1272 if (ok)
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1273 return item;
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1274 Py_DECREF(item);
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1275 lz->stop = 1;
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1276 return NULL;
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1277 }
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1278
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1279 static PyObject *
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1280 takewhile_reduce(takewhileobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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1281 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1282 return Py_BuildValue("O(OO)l", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1283 lz->func, lz->it, lz->stop);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1284 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1285
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1286 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1287 takewhile_reduce_setstate(takewhileobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1288 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1289 int stop = PyObject_IsTrue(state);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1290 if (stop == -1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1291 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1292 lz->stop = stop;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1293 Py_RETURN_NONE;
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1294 }
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diff changeset
1295
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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1296 static PyMethodDef takewhile_reduce_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1297 {"__reduce__", (PyCFunction)takewhile_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1298 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1299 {"__setstate__", (PyCFunction)takewhile_reduce_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1300 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1301 {NULL, NULL} /* sentinel */
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1302 };
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1303 PyDoc_STRVAR(takewhile_doc,
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1304 "takewhile(predicate, iterable) --> takewhile object\n\
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1305 \n\
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1306 Return successive entries from an iterable as long as the \n\
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diff changeset
1307 predicate evaluates to true for each entry.");
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1308
29850
45dc33433323 SF patch #770521: make itertools type declarations static
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diff changeset
1309 static PyTypeObject takewhile_type = {
61466
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diff changeset
1310 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
1311 "itertools.takewhile", /* tp_name */
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diff changeset
1312 sizeof(takewhileobject), /* tp_basicsize */
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diff changeset
1313 0, /* tp_itemsize */
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diff changeset
1314 /* methods */
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diff changeset
1315 (destructor)takewhile_dealloc, /* tp_dealloc */
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diff changeset
1316 0, /* tp_print */
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diff changeset
1317 0, /* tp_getattr */
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diff changeset
1318 0, /* tp_setattr */
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diff changeset
1319 0, /* tp_reserved */
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diff changeset
1320 0, /* tp_repr */
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diff changeset
1321 0, /* tp_as_number */
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diff changeset
1322 0, /* tp_as_sequence */
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diff changeset
1323 0, /* tp_as_mapping */
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diff changeset
1324 0, /* tp_hash */
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diff changeset
1325 0, /* tp_call */
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diff changeset
1326 0, /* tp_str */
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diff changeset
1327 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
1328 0, /* tp_setattro */
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diff changeset
1329 0, /* tp_as_buffer */
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diff changeset
1330 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
1331 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1332 takewhile_doc, /* tp_doc */
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diff changeset
1333 (traverseproc)takewhile_traverse, /* tp_traverse */
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diff changeset
1334 0, /* tp_clear */
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diff changeset
1335 0, /* tp_richcompare */
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diff changeset
1336 0, /* tp_weaklistoffset */
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diff changeset
1337 PyObject_SelfIter, /* tp_iter */
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diff changeset
1338 (iternextfunc)takewhile_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1339 takewhile_reduce_methods, /* tp_methods */
61466
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diff changeset
1340 0, /* tp_members */
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diff changeset
1341 0, /* tp_getset */
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diff changeset
1342 0, /* tp_base */
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diff changeset
1343 0, /* tp_dict */
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diff changeset
1344 0, /* tp_descr_get */
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diff changeset
1345 0, /* tp_descr_set */
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diff changeset
1346 0, /* tp_dictoffset */
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1347 0, /* tp_init */
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diff changeset
1348 0, /* tp_alloc */
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diff changeset
1349 takewhile_new, /* tp_new */
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diff changeset
1350 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1351 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1352
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 /* islice object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1355
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1356 typedef struct {
61466
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1357 PyObject_HEAD
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diff changeset
1358 PyObject *it;
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1359 Py_ssize_t next;
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1360 Py_ssize_t stop;
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diff changeset
1361 Py_ssize_t step;
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diff changeset
1362 Py_ssize_t cnt;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1363 } isliceobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1364
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1365 static PyTypeObject islice_type;
27570
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1366
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1367 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1368 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
1369 {
61466
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1370 PyObject *seq;
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1371 Py_ssize_t start=0, stop=-1, step=1;
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1372 PyObject *it, *a1=NULL, *a2=NULL, *a3=NULL;
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diff changeset
1373 Py_ssize_t numargs;
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1374 isliceobject *lz;
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diff changeset
1375
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1376 if (type == &islice_type && !_PyArg_NoKeywords("islice()", kwds))
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1377 return NULL;
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diff changeset
1378
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1379 if (!PyArg_UnpackTuple(args, "islice", 2, 4, &seq, &a1, &a2, &a3))
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1380 return NULL;
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diff changeset
1381
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1382 numargs = PyTuple_Size(args);
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diff changeset
1383 if (numargs == 2) {
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1384 if (a1 != Py_None) {
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diff changeset
1385 stop = PyLong_AsSsize_t(a1);
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diff changeset
1386 if (stop == -1) {
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diff changeset
1387 if (PyErr_Occurred())
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diff changeset
1388 PyErr_Clear();
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diff changeset
1389 PyErr_SetString(PyExc_ValueError,
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diff changeset
1390 "Stop argument for islice() must be None or an integer: 0 <= x <= sys.maxsize.");
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1391 return NULL;
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1392 }
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diff changeset
1393 }
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diff changeset
1394 } else {
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diff changeset
1395 if (a1 != Py_None)
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diff changeset
1396 start = PyLong_AsSsize_t(a1);
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diff changeset
1397 if (start == -1 && PyErr_Occurred())
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diff changeset
1398 PyErr_Clear();
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diff changeset
1399 if (a2 != Py_None) {
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1400 stop = PyLong_AsSsize_t(a2);
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diff changeset
1401 if (stop == -1) {
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diff changeset
1402 if (PyErr_Occurred())
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diff changeset
1403 PyErr_Clear();
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diff changeset
1404 PyErr_SetString(PyExc_ValueError,
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diff changeset
1405 "Stop argument for islice() must be None or an integer: 0 <= x <= sys.maxsize.");
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diff changeset
1406 return NULL;
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diff changeset
1407 }
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diff changeset
1408 }
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diff changeset
1409 }
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diff changeset
1410 if (start<0 || stop<-1) {
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diff changeset
1411 PyErr_SetString(PyExc_ValueError,
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diff changeset
1412 "Indices for islice() must be None or an integer: 0 <= x <= sys.maxsize.");
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1413 return NULL;
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diff changeset
1414 }
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diff changeset
1415
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1416 if (a3 != NULL) {
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diff changeset
1417 if (a3 != Py_None)
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diff changeset
1418 step = PyLong_AsSsize_t(a3);
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diff changeset
1419 if (step == -1 && PyErr_Occurred())
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diff changeset
1420 PyErr_Clear();
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diff changeset
1421 }
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diff changeset
1422 if (step<1) {
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diff changeset
1423 PyErr_SetString(PyExc_ValueError,
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diff changeset
1424 "Step for islice() must be a positive integer or None.");
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diff changeset
1425 return NULL;
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diff changeset
1426 }
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diff changeset
1427
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diff changeset
1428 /* Get iterator. */
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diff changeset
1429 it = PyObject_GetIter(seq);
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diff changeset
1430 if (it == NULL)
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diff changeset
1431 return NULL;
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diff changeset
1432
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diff changeset
1433 /* create isliceobject structure */
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diff changeset
1434 lz = (isliceobject *)type->tp_alloc(type, 0);
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1435 if (lz == NULL) {
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diff changeset
1436 Py_DECREF(it);
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1437 return NULL;
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1438 }
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diff changeset
1439 lz->it = it;
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diff changeset
1440 lz->next = start;
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parents: 57525
diff changeset
1441 lz->stop = stop;
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parents: 57525
diff changeset
1442 lz->step = step;
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parents: 57525
diff changeset
1443 lz->cnt = 0L;
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diff changeset
1444
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diff changeset
1445 return (PyObject *)lz;
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1446 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1447
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1448 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1449 islice_dealloc(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1450 {
61466
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diff changeset
1451 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
1452 Py_XDECREF(lz->it);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
1453 Py_TYPE(lz)->tp_free(lz);
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1454 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1455
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1456 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1457 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
1458 {
61466
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diff changeset
1459 Py_VISIT(lz->it);
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diff changeset
1460 return 0;
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ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1461 }
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1462
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1463 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1464 islice_next(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1465 {
61466
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diff changeset
1466 PyObject *item;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
1467 PyObject *it = lz->it;
66546
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1468 Py_ssize_t stop = lz->stop;
61466
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diff changeset
1469 Py_ssize_t oldnext;
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diff changeset
1470 PyObject *(*iternext)(PyObject *);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
1471
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diff changeset
1472 iternext = *Py_TYPE(it)->tp_iternext;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
1473 while (lz->cnt < lz->next) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
1474 item = iternext(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
1475 if (item == NULL)
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diff changeset
1476 return NULL;
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diff changeset
1477 Py_DECREF(item);
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diff changeset
1478 lz->cnt++;
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diff changeset
1479 }
66546
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1480 if (stop != -1 && lz->cnt >= stop)
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diff changeset
1481 return NULL;
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diff changeset
1482 item = iternext(it);
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diff changeset
1483 if (item == NULL)
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diff changeset
1484 return NULL;
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diff changeset
1485 lz->cnt++;
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diff changeset
1486 oldnext = lz->next;
72459
b378864d8ff3 Issue #12973: Fix itertools bug caused by signed integer overflow. Thanks Stefan Krah.
Mark Dickinson <mdickinson@enthought.com>
parents: 69063
diff changeset
1487 /* The (size_t) cast below avoids the danger of undefined
b378864d8ff3 Issue #12973: Fix itertools bug caused by signed integer overflow. Thanks Stefan Krah.
Mark Dickinson <mdickinson@enthought.com>
parents: 69063
diff changeset
1488 behaviour from signed integer overflow. */
b378864d8ff3 Issue #12973: Fix itertools bug caused by signed integer overflow. Thanks Stefan Krah.
Mark Dickinson <mdickinson@enthought.com>
parents: 69063
diff changeset
1489 lz->next += (size_t)lz->step;
66546
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1490 if (lz->next < oldnext || (stop != -1 && lz->next > stop))
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1491 lz->next = stop;
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diff changeset
1492 return item;
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diff changeset
1493 }
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Raymond Hettinger <python@rcn.com>
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diff changeset
1494
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1495 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1496 islice_reduce(isliceobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1497 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1498 /* When unpickled, generate a new object with the same bounds,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1499 * then 'setstate' with the next and count
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1500 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1501 PyObject *stop;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1502 if (lz->stop == -1) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1503 stop = Py_None;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1504 Py_INCREF(stop);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1505 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1506 stop = PyLong_FromSsize_t(lz->stop);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1507 if (stop == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1508 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1509 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1510 return Py_BuildValue("O(OnNn)n", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1511 lz->it, lz->next, stop, lz->step,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1512 lz->cnt);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1513 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1514
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1515 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1516 islice_setstate(isliceobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1517 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1518 Py_ssize_t cnt = PyLong_AsSsize_t(state);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1519 if (cnt == -1 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1520 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1521 lz->cnt = cnt;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1522 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1523 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1524
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1525 static PyMethodDef islice_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1526 {"__reduce__", (PyCFunction)islice_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1527 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1528 {"__setstate__", (PyCFunction)islice_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1529 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1530 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1531 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1532
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1533 PyDoc_STRVAR(islice_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1534 "islice(iterable, [start,] stop [, step]) --> islice object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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parents:
diff changeset
1535 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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parents:
diff changeset
1536 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
1537 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
1538 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
1539 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
1540 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
1541 but returns an iterator.");
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1542
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1543 static PyTypeObject islice_type = {
61466
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1544 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
1545 "itertools.islice", /* tp_name */
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diff changeset
1546 sizeof(isliceobject), /* tp_basicsize */
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diff changeset
1547 0, /* tp_itemsize */
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diff changeset
1548 /* methods */
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parents: 57525
diff changeset
1549 (destructor)islice_dealloc, /* tp_dealloc */
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diff changeset
1550 0, /* tp_print */
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diff changeset
1551 0, /* tp_getattr */
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diff changeset
1552 0, /* tp_setattr */
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diff changeset
1553 0, /* tp_reserved */
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diff changeset
1554 0, /* tp_repr */
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diff changeset
1555 0, /* tp_as_number */
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1556 0, /* tp_as_sequence */
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diff changeset
1557 0, /* tp_as_mapping */
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diff changeset
1558 0, /* tp_hash */
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1559 0, /* tp_call */
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diff changeset
1560 0, /* tp_str */
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diff changeset
1561 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
1562 0, /* tp_setattro */
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diff changeset
1563 0, /* tp_as_buffer */
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diff changeset
1564 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
1565 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1566 islice_doc, /* tp_doc */
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diff changeset
1567 (traverseproc)islice_traverse, /* tp_traverse */
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1568 0, /* tp_clear */
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1569 0, /* tp_richcompare */
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diff changeset
1570 0, /* tp_weaklistoffset */
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diff changeset
1571 PyObject_SelfIter, /* tp_iter */
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diff changeset
1572 (iternextfunc)islice_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1573 islice_methods, /* tp_methods */
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1574 0, /* tp_members */
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1575 0, /* tp_getset */
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1576 0, /* tp_base */
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1577 0, /* tp_dict */
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1578 0, /* tp_descr_get */
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1579 0, /* tp_descr_set */
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1580 0, /* tp_dictoffset */
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1581 0, /* tp_init */
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1582 0, /* tp_alloc */
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diff changeset
1583 islice_new, /* tp_new */
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1584 PyObject_GC_Del, /* tp_free */
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1585 };
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1586
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1587
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1588 /* starmap object ************************************************************/
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1589
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1590 typedef struct {
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1591 PyObject_HEAD
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1592 PyObject *func;
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1593 PyObject *it;
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1594 } starmapobject;
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1595
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1596 static PyTypeObject starmap_type;
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1597
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1598 static PyObject *
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1599 starmap_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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1600 {
61466
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1601 PyObject *func, *seq;
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1602 PyObject *it;
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1603 starmapobject *lz;
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1604
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1605 if (type == &starmap_type && !_PyArg_NoKeywords("starmap()", kwds))
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1606 return NULL;
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1607
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1608 if (!PyArg_UnpackTuple(args, "starmap", 2, 2, &func, &seq))
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1609 return NULL;
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1610
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1611 /* Get iterator. */
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1612 it = PyObject_GetIter(seq);
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1613 if (it == NULL)
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1614 return NULL;
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1615
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1616 /* create starmapobject structure */
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1617 lz = (starmapobject *)type->tp_alloc(type, 0);
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1618 if (lz == NULL) {
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1619 Py_DECREF(it);
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1620 return NULL;
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1621 }
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1622 Py_INCREF(func);
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1623 lz->func = func;
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1624 lz->it = it;
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1625
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1626 return (PyObject *)lz;
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1627 }
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1628
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1629 static void
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1630 starmap_dealloc(starmapobject *lz)
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1631 {
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1632 PyObject_GC_UnTrack(lz);
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1633 Py_XDECREF(lz->func);
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1634 Py_XDECREF(lz->it);
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1635 Py_TYPE(lz)->tp_free(lz);
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1636 }
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1637
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1638 static int
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1639 starmap_traverse(starmapobject *lz, visitproc visit, void *arg)
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1640 {
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1641 Py_VISIT(lz->it);
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1642 Py_VISIT(lz->func);
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1643 return 0;
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1644 }
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1645
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1646 static PyObject *
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1647 starmap_next(starmapobject *lz)
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1648 {
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1649 PyObject *args;
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1650 PyObject *result;
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1651 PyObject *it = lz->it;
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1652
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1653 args = (*Py_TYPE(it)->tp_iternext)(it);
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1654 if (args == NULL)
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1655 return NULL;
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1656 if (!PyTuple_CheckExact(args)) {
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1657 PyObject *newargs = PySequence_Tuple(args);
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1658 Py_DECREF(args);
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1659 if (newargs == NULL)
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1660 return NULL;
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1661 args = newargs;
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1662 }
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1663 result = PyObject_Call(lz->func, args, NULL);
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1664 Py_DECREF(args);
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1665 return result;
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1666 }
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1667
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1668 static PyObject *
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1669 starmap_reduce(starmapobject *lz)
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1670 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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1671 /* Just pickle the iterator */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1672 return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->func, lz->it);
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1673 }
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1674
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1675 static PyMethodDef starmap_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1676 {"__reduce__", (PyCFunction)starmap_reduce, METH_NOARGS,
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diff changeset
1677 reduce_doc},
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diff changeset
1678 {NULL, NULL} /* sentinel */
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diff changeset
1679 };
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1680
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1681 PyDoc_STRVAR(starmap_doc,
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diff changeset
1682 "starmap(function, sequence) --> starmap object\n\
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1683 \n\
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1684 Return an iterator whose values are returned from the function evaluated\n\
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1685 with a argument tuple taken from the given sequence.");
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1686
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1687 static PyTypeObject starmap_type = {
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1688 PyVarObject_HEAD_INIT(NULL, 0)
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1689 "itertools.starmap", /* tp_name */
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1690 sizeof(starmapobject), /* tp_basicsize */
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1691 0, /* tp_itemsize */
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1692 /* methods */
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1693 (destructor)starmap_dealloc, /* tp_dealloc */
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1694 0, /* tp_print */
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1695 0, /* tp_getattr */
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1696 0, /* tp_setattr */
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1697 0, /* tp_reserved */
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diff changeset
1698 0, /* tp_repr */
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diff changeset
1699 0, /* tp_as_number */
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diff changeset
1700 0, /* tp_as_sequence */
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parents: 57525
diff changeset
1701 0, /* tp_as_mapping */
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parents: 57525
diff changeset
1702 0, /* tp_hash */
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parents: 57525
diff changeset
1703 0, /* tp_call */
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diff changeset
1704 0, /* tp_str */
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parents: 57525
diff changeset
1705 PyObject_GenericGetAttr, /* tp_getattro */
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parents: 57525
diff changeset
1706 0, /* tp_setattro */
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parents: 57525
diff changeset
1707 0, /* tp_as_buffer */
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diff changeset
1708 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
1709 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1710 starmap_doc, /* tp_doc */
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diff changeset
1711 (traverseproc)starmap_traverse, /* tp_traverse */
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diff changeset
1712 0, /* tp_clear */
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diff changeset
1713 0, /* tp_richcompare */
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diff changeset
1714 0, /* tp_weaklistoffset */
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diff changeset
1715 PyObject_SelfIter, /* tp_iter */
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parents: 57525
diff changeset
1716 (iternextfunc)starmap_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1717 starmap_methods, /* tp_methods */
61466
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diff changeset
1718 0, /* tp_members */
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diff changeset
1719 0, /* tp_getset */
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diff changeset
1720 0, /* tp_base */
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diff changeset
1721 0, /* tp_dict */
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diff changeset
1722 0, /* tp_descr_get */
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diff changeset
1723 0, /* tp_descr_set */
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diff changeset
1724 0, /* tp_dictoffset */
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1725 0, /* tp_init */
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diff changeset
1726 0, /* tp_alloc */
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diff changeset
1727 starmap_new, /* tp_new */
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diff changeset
1728 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1729 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1730
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1731
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1732 /* chain object ************************************************************/
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1733
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1734 typedef struct {
61466
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1735 PyObject_HEAD
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diff changeset
1736 PyObject *source; /* Iterator over input iterables */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
1737 PyObject *active; /* Currently running input iterator */
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1738 } chainobject;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1739
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1740 static PyTypeObject chain_type;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1741
61466
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1742 static PyObject *
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Christian Heimes <christian@cheimes.de>
parents: 45548
diff changeset
1743 chain_new_internal(PyTypeObject *type, PyObject *source)
937a3c5af691 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61083,61085,61092-61097,61103-61104,61110-61112,61114-61115,61117-61125 via svnmerge from
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1744 {
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1745 chainobject *lz;
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1746
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1747 lz = (chainobject *)type->tp_alloc(type, 0);
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1748 if (lz == NULL) {
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diff changeset
1749 Py_DECREF(source);
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1750 return NULL;
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diff changeset
1751 }
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1752
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1753 lz->source = source;
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diff changeset
1754 lz->active = NULL;
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diff changeset
1755 return (PyObject *)lz;
45569
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1756 }
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Christian Heimes <christian@cheimes.de>
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diff changeset
1757
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1758 static PyObject *
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1759 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
1760 {
61466
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1761 PyObject *source;
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1762
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diff changeset
1763 if (type == &chain_type && !_PyArg_NoKeywords("chain()", kwds))
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diff changeset
1764 return NULL;
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diff changeset
1765
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diff changeset
1766 source = PyObject_GetIter(args);
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diff changeset
1767 if (source == NULL)
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diff changeset
1768 return NULL;
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diff changeset
1769
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diff changeset
1770 return chain_new_internal(type, source);
45569
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1771 }
937a3c5af691 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61083,61085,61092-61097,61103-61104,61110-61112,61114-61115,61117-61125 via svnmerge from
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1772
937a3c5af691 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61083,61085,61092-61097,61103-61104,61110-61112,61114-61115,61117-61125 via svnmerge from
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diff changeset
1773 static PyObject *
937a3c5af691 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61083,61085,61092-61097,61103-61104,61110-61112,61114-61115,61117-61125 via svnmerge from
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diff changeset
1774 chain_new_from_iterable(PyTypeObject *type, PyObject *arg)
937a3c5af691 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61083,61085,61092-61097,61103-61104,61110-61112,61114-61115,61117-61125 via svnmerge from
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1775 {
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diff changeset
1776 PyObject *source;
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1777
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diff changeset
1778 source = PyObject_GetIter(arg);
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diff changeset
1779 if (source == NULL)
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diff changeset
1780 return NULL;
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diff changeset
1781
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diff changeset
1782 return chain_new_internal(type, source);
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1783 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1784
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1785 static void
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1786 chain_dealloc(chainobject *lz)
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1787 {
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diff changeset
1788 PyObject_GC_UnTrack(lz);
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diff changeset
1789 Py_XDECREF(lz->active);
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diff changeset
1790 Py_XDECREF(lz->source);
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diff changeset
1791 Py_TYPE(lz)->tp_free(lz);
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1792 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1793
27747
941de791b17a SF bug #681003: itertools issues
Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1794 static int
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1795 chain_traverse(chainobject *lz, visitproc visit, void *arg)
27747
941de791b17a SF bug #681003: itertools issues
Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1796 {
61466
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diff changeset
1797 Py_VISIT(lz->source);
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diff changeset
1798 Py_VISIT(lz->active);
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diff changeset
1799 return 0;
27747
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Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1800 }
941de791b17a SF bug #681003: itertools issues
Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1801
27570
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1802 static PyObject *
28024
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Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1803 chain_next(chainobject *lz)
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1804 {
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diff changeset
1805 PyObject *item;
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1806
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1807 if (lz->source == NULL)
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1808 return NULL; /* already stopped */
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1809
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1810 if (lz->active == NULL) {
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1811 PyObject *iterable = PyIter_Next(lz->source);
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1812 if (iterable == NULL) {
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1813 Py_CLEAR(lz->source);
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1814 return NULL; /* no more input sources */
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1815 }
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1816 lz->active = PyObject_GetIter(iterable);
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1817 Py_DECREF(iterable);
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1818 if (lz->active == NULL) {
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1819 Py_CLEAR(lz->source);
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1820 return NULL; /* input not iterable */
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diff changeset
1821 }
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1822 }
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diff changeset
1823 item = PyIter_Next(lz->active);
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diff changeset
1824 if (item != NULL)
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1825 return item;
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diff changeset
1826 if (PyErr_Occurred()) {
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1827 if (PyErr_ExceptionMatches(PyExc_StopIteration))
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1828 PyErr_Clear();
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1829 else
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1830 return NULL; /* input raised an exception */
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1831 }
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1832 Py_CLEAR(lz->active);
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1833 return chain_next(lz); /* recurse and use next active */
27570
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1834 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1835
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1836 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1837 chain_reduce(chainobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1838 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1839 if (lz->source) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1840 /* we can't pickle function objects (itertools.from_iterable) so
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1841 * we must use setstate to replace the iterable. One day we
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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1842 * will fix pickling of functions
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1843 */
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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1844 if (lz->active) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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1845 return Py_BuildValue("O()(OO)", Py_TYPE(lz), lz->source, lz->active);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1846 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1847 return Py_BuildValue("O()(O)", Py_TYPE(lz), lz->source);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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1848 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1849 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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1850 return Py_BuildValue("O()", Py_TYPE(lz)); /* exhausted */
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1851 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1852 return NULL;
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1853 }
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1854
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1855 static PyObject *
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1856 chain_setstate(chainobject *lz, PyObject *state)
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1857 {
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1858 PyObject *source, *active=NULL;
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1859 if (! PyArg_ParseTuple(state, "O|O", &source, &active))
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1860 return NULL;
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1861
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1862 Py_CLEAR(lz->source);
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1863 lz->source = source;
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1864 Py_INCREF(lz->source);
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1865 Py_CLEAR(lz->active);
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1866 lz->active = active;
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diff changeset
1867 Py_XINCREF(lz->active);
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1868 Py_RETURN_NONE;
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diff changeset
1869 }
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1870
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1871 PyDoc_STRVAR(chain_doc,
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1872 "chain(*iterables) --> chain object\n\
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diff changeset
1873 \n\
41501
0c5019afc55b PEP 3114: rename .next() to .__next__() and add next() builtin.
Georg Brandl <georg@python.org>
parents: 40893
diff changeset
1874 Return a chain object whose .__next__() method returns elements from the\n\
28024
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diff changeset
1875 first iterable until it is exhausted, then elements from the next\n\
61fa6b55c1de User requested changes to the itertools module.
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1876 iterable, until all of the iterables are exhausted.");
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1877
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1878 PyDoc_STRVAR(chain_from_iterable_doc,
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1879 "chain.from_iterable(iterable) --> chain object\n\
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1880 \n\
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1881 Alternate chain() contructor taking a single iterable argument\n\
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1882 that evaluates lazily.");
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1883
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1884 static PyMethodDef chain_methods[] = {
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1885 {"from_iterable", (PyCFunction) chain_new_from_iterable, METH_O | METH_CLASS,
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1886 chain_from_iterable_doc},
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1887 {"__reduce__", (PyCFunction)chain_reduce, METH_NOARGS,
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1888 reduce_doc},
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1889 {"__setstate__", (PyCFunction)chain_setstate, METH_O,
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1890 setstate_doc},
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1891 {NULL, NULL} /* sentinel */
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1892 };
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1893
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diff changeset
1894 static PyTypeObject chain_type = {
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1895 PyVarObject_HEAD_INIT(NULL, 0)
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1896 "itertools.chain", /* tp_name */
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diff changeset
1897 sizeof(chainobject), /* tp_basicsize */
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diff changeset
1898 0, /* tp_itemsize */
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diff changeset
1899 /* methods */
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1900 (destructor)chain_dealloc, /* tp_dealloc */
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1901 0, /* tp_print */
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1902 0, /* tp_getattr */
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1903 0, /* tp_setattr */
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1904 0, /* tp_reserved */
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1905 0, /* tp_repr */
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1906 0, /* tp_as_number */
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1907 0, /* tp_as_sequence */
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1908 0, /* tp_as_mapping */
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1909 0, /* tp_hash */
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1910 0, /* tp_call */
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1911 0, /* tp_str */
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1912 PyObject_GenericGetAttr, /* tp_getattro */
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1913 0, /* tp_setattro */
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1914 0, /* tp_as_buffer */
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diff changeset
1915 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
1916 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1917 chain_doc, /* tp_doc */
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1918 (traverseproc)chain_traverse, /* tp_traverse */
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1919 0, /* tp_clear */
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1920 0, /* tp_richcompare */
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1921 0, /* tp_weaklistoffset */
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1922 PyObject_SelfIter, /* tp_iter */
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1923 (iternextfunc)chain_next, /* tp_iternext */
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1924 chain_methods, /* tp_methods */
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1925 0, /* tp_members */
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1926 0, /* tp_getset */
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1927 0, /* tp_base */
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1928 0, /* tp_dict */
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1929 0, /* tp_descr_get */
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1930 0, /* tp_descr_set */
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1931 0, /* tp_dictoffset */
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1932 0, /* tp_init */
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1933 0, /* tp_alloc */
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1934 chain_new, /* tp_new */
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1935 PyObject_GC_Del, /* tp_free */
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1936 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1937
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1938
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1939 /* product object ************************************************************/
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1940
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1941 typedef struct {
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1942 PyObject_HEAD
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1943 PyObject *pools; /* tuple of pool tuples */
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1944 Py_ssize_t *indices; /* one index per pool */
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1945 PyObject *result; /* most recently returned result tuple */
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1946 int stopped; /* set to 1 when the product iterator is exhausted */
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1947 } productobject;
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1948
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1949 static PyTypeObject product_type;
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1950
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1951 static PyObject *
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1952 product_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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1953 {
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1954 productobject *lz;
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1955 Py_ssize_t nargs, npools, repeat=1;
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1956 PyObject *pools = NULL;
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1957 Py_ssize_t *indices = NULL;
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1958 Py_ssize_t i;
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1959
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1960 if (kwds != NULL) {
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1961 char *kwlist[] = {"repeat", 0};
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1962 PyObject *tmpargs = PyTuple_New(0);
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1963 if (tmpargs == NULL)
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1964 return NULL;
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1965 if (!PyArg_ParseTupleAndKeywords(tmpargs, kwds, "|n:product", kwlist, &repeat)) {
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1966 Py_DECREF(tmpargs);
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1967 return NULL;
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1968 }
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1969 Py_DECREF(tmpargs);
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1970 if (repeat < 0) {
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1971 PyErr_SetString(PyExc_ValueError,
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1972 "repeat argument cannot be negative");
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1973 return NULL;
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1974 }
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1975 }
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1976
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1977 assert(PyTuple_Check(args));
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1978 nargs = (repeat == 0) ? 0 : PyTuple_GET_SIZE(args);
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1979 npools = nargs * repeat;
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1980
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1981 indices = PyMem_Malloc(npools * sizeof(Py_ssize_t));
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1982 if (indices == NULL) {
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1983 PyErr_NoMemory();
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1984 goto error;
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1985 }
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1986
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1987 pools = PyTuple_New(npools);
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1988 if (pools == NULL)
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1989 goto error;
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1990
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1991 for (i=0; i < nargs ; ++i) {
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1992 PyObject *item = PyTuple_GET_ITEM(args, i);
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1993 PyObject *pool = PySequence_Tuple(item);
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1994 if (pool == NULL)
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1995 goto error;
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1996 PyTuple_SET_ITEM(pools, i, pool);
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1997 indices[i] = 0;
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1998 }
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diff changeset
1999 for ( ; i < npools; ++i) {
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diff changeset
2000 PyObject *pool = PyTuple_GET_ITEM(pools, i - nargs);
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2001 Py_INCREF(pool);
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diff changeset
2002 PyTuple_SET_ITEM(pools, i, pool);
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diff changeset
2003 indices[i] = 0;
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2004 }
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2005
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2006 /* create productobject structure */
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diff changeset
2007 lz = (productobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
2008 if (lz == NULL)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2009 goto error;
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diff changeset
2010
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2011 lz->pools = pools;
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diff changeset
2012 lz->indices = indices;
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2013 lz->result = NULL;
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diff changeset
2014 lz->stopped = 0;
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diff changeset
2015
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2016 return (PyObject *)lz;
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2017
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2018 error:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2019 if (indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
2020 PyMem_Free(indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2021 Py_XDECREF(pools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2022 return NULL;
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2023 }
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2024
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2025 static void
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2026 product_dealloc(productobject *lz)
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2027 {
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diff changeset
2028 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
2029 Py_XDECREF(lz->pools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2030 Py_XDECREF(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2031 if (lz->indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2032 PyMem_Free(lz->indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
2033 Py_TYPE(lz)->tp_free(lz);
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2034 }
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2035
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2036 static int
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2037 product_traverse(productobject *lz, visitproc visit, void *arg)
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2038 {
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parents: 57525
diff changeset
2039 Py_VISIT(lz->pools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
2040 Py_VISIT(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2041 return 0;
45435
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2042 }
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2043
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2044 static PyObject *
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2045 product_next(productobject *lz)
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2046 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2047 PyObject *pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2048 PyObject *elem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2049 PyObject *oldelem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2050 PyObject *pools = lz->pools;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2051 PyObject *result = lz->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2052 Py_ssize_t npools = PyTuple_GET_SIZE(pools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2053 Py_ssize_t i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2054
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2055 if (lz->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2056 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2057
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2058 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2059 /* On the first pass, return an initial tuple filled with the
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2060 first element from each pool. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2061 result = PyTuple_New(npools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2062 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2063 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2064 lz->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2065 for (i=0; i < npools; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2066 pool = PyTuple_GET_ITEM(pools, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2067 if (PyTuple_GET_SIZE(pool) == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2068 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2069 elem = PyTuple_GET_ITEM(pool, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2070 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2071 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2072 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2073 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2074 Py_ssize_t *indices = lz->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2075
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2076 /* Copy the previous result tuple or re-use it if available */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2077 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2078 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2079 result = PyTuple_New(npools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2080 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2081 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2082 lz->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2083 for (i=0; i < npools; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2084 elem = PyTuple_GET_ITEM(old_result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2085 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2086 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2087 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2088 Py_DECREF(old_result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2089 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2090 /* Now, we've got the only copy so we can update it in-place */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2091 assert (npools==0 || Py_REFCNT(result) == 1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2092
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2093 /* Update the pool indices right-to-left. Only advance to the
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2094 next pool when the previous one rolls-over */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2095 for (i=npools-1 ; i >= 0 ; i--) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2096 pool = PyTuple_GET_ITEM(pools, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2097 indices[i]++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2098 if (indices[i] == PyTuple_GET_SIZE(pool)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2099 /* Roll-over and advance to next pool */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2100 indices[i] = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2101 elem = PyTuple_GET_ITEM(pool, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2102 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2103 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2104 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2105 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2106 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2107 /* No rollover. Just increment and stop here. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2108 elem = PyTuple_GET_ITEM(pool, indices[i]);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2109 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2110 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2111 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2112 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2113 break;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2114 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2115 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2116
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2117 /* If i is negative, then the indices have all rolled-over
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2118 and we're done. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2119 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2120 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2121 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2122
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2123 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2124 return result;
45435
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2125
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2126 empty:
61466
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
2127 lz->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2128 return NULL;
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2129 }
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2130
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2131 static PyObject *
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parents: 72926
diff changeset
2132 product_reduce(productobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2133 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2134 if (lz->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2135 return Py_BuildValue("O(())", Py_TYPE(lz));
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2136 } else if (lz->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2137 return Py_BuildValue("OO", Py_TYPE(lz), lz->pools);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2138 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2139 PyObject *indices;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2140 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2141
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2142 /* we must pickle the indices use them for setstate, and
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2143 * additionally indicate that the iterator has started
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2144 */
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parents: 72926
diff changeset
2145 n = PyTuple_GET_SIZE(lz->pools);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2146 indices = PyTuple_New(n);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2147 if (indices == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2148 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2149 for (i=0; i<n; i++){
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2150 PyObject* index = PyLong_FromSsize_t(lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2151 if (!index) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2152 Py_DECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2153 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2154 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2155 PyTuple_SET_ITEM(indices, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2156 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2157 return Py_BuildValue("OON", Py_TYPE(lz), lz->pools, indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2158 }
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parents: 72926
diff changeset
2159 }
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parents: 72926
diff changeset
2160
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parents: 72926
diff changeset
2161 static PyObject *
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2162 product_setstate(productobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2163 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2164 PyObject *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2165 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2166
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2167 n = PyTuple_GET_SIZE(lz->pools);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2168 if (!PyTuple_Check(state) || PyTuple_GET_SIZE(state) != n) {
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parents: 72926
diff changeset
2169 PyErr_SetString(PyExc_ValueError, "invalid arguments");
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parents: 72926
diff changeset
2170 return NULL;
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parents: 72926
diff changeset
2171 }
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parents: 72926
diff changeset
2172 for (i=0; i<n; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2173 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2174 PyObject* indexObject = PyTuple_GET_ITEM(state, i);
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parents: 72926
diff changeset
2175 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
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diff changeset
2176 if (index < 0 && PyErr_Occurred())
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parents: 72926
diff changeset
2177 return NULL; /* not an integer */
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diff changeset
2178 /* clamp the index */
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parents: 72926
diff changeset
2179 if (index < 0)
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parents: 72926
diff changeset
2180 index = 0;
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parents: 72926
diff changeset
2181 else if (index > n-1)
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parents: 72926
diff changeset
2182 index = n-1;
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parents: 72926
diff changeset
2183 lz->indices[i] = index;
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parents: 72926
diff changeset
2184 }
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parents: 72926
diff changeset
2185
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2186 result = PyTuple_New(n);
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parents: 72926
diff changeset
2187 if (!result)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2188 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2189 for (i=0; i<n; i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2190 PyObject *pool = PyTuple_GET_ITEM(lz->pools, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2191 PyObject *element = PyTuple_GET_ITEM(pool, lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2192 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2193 PyTuple_SET_ITEM(result, i, element);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2194 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2195 Py_CLEAR(lz->result);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2196 lz->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2197 Py_RETURN_NONE;
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parents: 72926
diff changeset
2198 }
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parents: 72926
diff changeset
2199
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parents: 72926
diff changeset
2200 static PyMethodDef product_methods[] = {
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2201 {"__reduce__", (PyCFunction)product_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2202 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2203 {"__setstate__", (PyCFunction)product_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2204 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2205 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2206 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2207
45435
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2208 PyDoc_STRVAR(product_doc,
42b3b117391d Merged revisions 60481,60485,60489-60492,60494-60496,60498-60499,60501-60503,60505-60506,60508-60509,60523-60524,60532,60543,60545,60547-60548,60552,60554,60556-60559,60561-60562,60569,60571-60572,60574,60576-60583,60585-60586,60589,60591,60594-60595,60597-60598,60600-60601,60606-60612,60615,60617,60619-60621,60623-60625,60627-60629,60631,60633,60635,60647,60650,60652,60654,60656,60658-60659,60664-60666,60668-60670,60672,60676,60678,60680-60683,60685-60686,60688,60690,60692-60694,60697-60700,60705-60706,60708,60711,60714,60720,60724-60730,60732,60736,60742,60744,60746,60748,60750-60751,60753,60756-60757,60759-60761,60763-60764,60766,60769-60770,60774-60784,60787-60789,60793,60796,60799-60809,60812-60813,60815-60821,60823-60826,60828-60829,60831-60834,60836,60838-60839,60846-60849,60852-60854,60856-60859,60861-60870,60874-60875,60880-60881,60886,60888-60890,60892,60894-60898,60900-60931,60933-60958 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2209 "product(*iterables) --> product object\n\
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2210 \n\
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2211 Cartesian product of input iterables. Equivalent to nested for-loops.\n\n\
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2212 For example, product(A, B) returns the same as: ((x,y) for x in A for y in B).\n\
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2213 The leftmost iterators are in the outermost for-loop, so the output tuples\n\
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2214 cycle in a manner similar to an odometer (with the rightmost element changing\n\
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2215 on every iteration).\n\n\
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2216 To compute the product of an iterable with itself, specify the number\n\
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2217 of repetitions with the optional repeat keyword argument. For example,\n\
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2218 product(A, repeat=4) means the same as product(A, A, A, A).\n\n\
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2219 product('ab', range(3)) --> ('a',0) ('a',1) ('a',2) ('b',0) ('b',1) ('b',2)\n\
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diff changeset
2220 product((0,1), (0,1), (0,1)) --> (0,0,0) (0,0,1) (0,1,0) (0,1,1) (1,0,0) ...");
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2221
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2222 static PyTypeObject product_type = {
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2223 PyVarObject_HEAD_INIT(NULL, 0)
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2224 "itertools.product", /* tp_name */
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2225 sizeof(productobject), /* tp_basicsize */
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2226 0, /* tp_itemsize */
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2227 /* methods */
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2228 (destructor)product_dealloc, /* tp_dealloc */
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2229 0, /* tp_print */
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2230 0, /* tp_getattr */
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2231 0, /* tp_setattr */
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2232 0, /* tp_reserved */
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2233 0, /* tp_repr */
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2234 0, /* tp_as_number */
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2235 0, /* tp_as_sequence */
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2236 0, /* tp_as_mapping */
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2237 0, /* tp_hash */
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2238 0, /* tp_call */
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2239 0, /* tp_str */
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2240 PyObject_GenericGetAttr, /* tp_getattro */
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2241 0, /* tp_setattro */
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2242 0, /* tp_as_buffer */
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2243 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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2244 Py_TPFLAGS_BASETYPE, /* tp_flags */
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2245 product_doc, /* tp_doc */
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2246 (traverseproc)product_traverse, /* tp_traverse */
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2247 0, /* tp_clear */
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2248 0, /* tp_richcompare */
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2249 0, /* tp_weaklistoffset */
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2250 PyObject_SelfIter, /* tp_iter */
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2251 (iternextfunc)product_next, /* tp_iternext */
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2252 product_methods, /* tp_methods */
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2253 0, /* tp_members */
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2254 0, /* tp_getset */
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2255 0, /* tp_base */
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2256 0, /* tp_dict */
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2257 0, /* tp_descr_get */
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2258 0, /* tp_descr_set */
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2259 0, /* tp_dictoffset */
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2260 0, /* tp_init */
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2261 0, /* tp_alloc */
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2262 product_new, /* tp_new */
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2263 PyObject_GC_Del, /* tp_free */
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2264 };
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2265
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2266
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diff changeset
2267 /* combinations object ************************************************************/
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2268
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diff changeset
2269 typedef struct {
61466
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2270 PyObject_HEAD
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2271 PyObject *pool; /* input converted to a tuple */
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2272 Py_ssize_t *indices; /* one index per result element */
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2273 PyObject *result; /* most recently returned result tuple */
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diff changeset
2274 Py_ssize_t r; /* size of result tuple */
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diff changeset
2275 int stopped; /* set to 1 when the combinations iterator is exhausted */
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2276 } combinationsobject;
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2277
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diff changeset
2278 static PyTypeObject combinations_type;
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2279
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diff changeset
2280 static PyObject *
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2281 combinations_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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2282 {
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2283 combinationsobject *co;
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2284 Py_ssize_t n;
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2285 Py_ssize_t r;
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2286 PyObject *pool = NULL;
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2287 PyObject *iterable = NULL;
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2288 Py_ssize_t *indices = NULL;
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2289 Py_ssize_t i;
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2290 static char *kwargs[] = {"iterable", "r", NULL};
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2291
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2292 if (!PyArg_ParseTupleAndKeywords(args, kwds, "On:combinations", kwargs,
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2293 &iterable, &r))
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2294 return NULL;
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2295
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2296 pool = PySequence_Tuple(iterable);
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2297 if (pool == NULL)
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2298 goto error;
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2299 n = PyTuple_GET_SIZE(pool);
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2300 if (r < 0) {
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2301 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
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2302 goto error;
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2303 }
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2304
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2305 indices = PyMem_Malloc(r * sizeof(Py_ssize_t));
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2306 if (indices == NULL) {
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2307 PyErr_NoMemory();
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2308 goto error;
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2309 }
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2310
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2311 for (i=0 ; i<r ; i++)
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2312 indices[i] = i;
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2313
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2314 /* create combinationsobject structure */
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2315 co = (combinationsobject *)type->tp_alloc(type, 0);
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2316 if (co == NULL)
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2317 goto error;
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2318
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2319 co->pool = pool;
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2320 co->indices = indices;
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2321 co->result = NULL;
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2322 co->r = r;
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2323 co->stopped = r > n ? 1 : 0;
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2324
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2325 return (PyObject *)co;
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2326
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2327 error:
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2328 if (indices != NULL)
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2329 PyMem_Free(indices);
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2330 Py_XDECREF(pool);
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2331 return NULL;
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2332 }
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2333
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diff changeset
2334 static void
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2335 combinations_dealloc(combinationsobject *co)
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2336 {
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2337 PyObject_GC_UnTrack(co);
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2338 Py_XDECREF(co->pool);
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2339 Py_XDECREF(co->result);
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2340 if (co->indices != NULL)
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2341 PyMem_Free(co->indices);
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2342 Py_TYPE(co)->tp_free(co);
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2343 }
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2344
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diff changeset
2345 static int
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diff changeset
2346 combinations_traverse(combinationsobject *co, visitproc visit, void *arg)
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2347 {
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2348 Py_VISIT(co->pool);
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2349 Py_VISIT(co->result);
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2350 return 0;
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2351 }
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diff changeset
2352
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diff changeset
2353 static PyObject *
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diff changeset
2354 combinations_next(combinationsobject *co)
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2355 {
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2356 PyObject *elem;
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2357 PyObject *oldelem;
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parents: 57525
diff changeset
2358 PyObject *pool = co->pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2359 Py_ssize_t *indices = co->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2360 PyObject *result = co->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2361 Py_ssize_t n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2362 Py_ssize_t r = co->r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2363 Py_ssize_t i, j, index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2364
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2365 if (co->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2366 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2367
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2368 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2369 /* On the first pass, initialize result tuple using the indices */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2370 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2371 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2372 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2373 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2374 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2375 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2376 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2377 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2378 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2379 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2380 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2381 /* Copy the previous result tuple or re-use it if available */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2382 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2383 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2384 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2385 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2386 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2387 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2388 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2389 elem = PyTuple_GET_ITEM(old_result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2390 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2391 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2392 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2393 Py_DECREF(old_result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2394 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2395 /* Now, we've got the only copy so we can update it in-place
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2396 * CPython's empty tuple is a singleton and cached in
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2397 * PyTuple's freelist.
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2398 */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2399 assert(r == 0 || Py_REFCNT(result) == 1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2400
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2401 /* Scan indices right-to-left until finding one that is not
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2402 at its maximum (i + n - r). */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2403 for (i=r-1 ; i >= 0 && indices[i] == i+n-r ; i--)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2404 ;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2405
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2406 /* If i is negative, then the indices are all at
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2407 their maximum value and we're done. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2408 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2409 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2410
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2411 /* Increment the current index which we know is not at its
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2412 maximum. Then move back to the right setting each index
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2413 to its lowest possible value (one higher than the index
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2414 to its left -- this maintains the sort order invariant). */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2415 indices[i]++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2416 for (j=i+1 ; j<r ; j++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2417 indices[j] = indices[j-1] + 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2418
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2419 /* Update the result tuple for the new indices
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2420 starting with i, the leftmost index that changed */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2421 for ( ; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2422 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2423 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2424 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2425 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2426 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2427 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2428 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2429 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2430
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2431 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2432 return result;
45548
8c3c5b4eef55 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61081-61095 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45534
diff changeset
2433
8c3c5b4eef55 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61081-61095 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45534
diff changeset
2434 empty:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2435 co->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2436 return NULL;
45548
8c3c5b4eef55 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61081-61095 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45534
diff changeset
2437 }
8c3c5b4eef55 Merged revisions 61038,61042-61045,61047,61050,61053,61055-61056,61061-61062,61066,61068,61070,61081-61095 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45534
diff changeset
2438
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2439 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2440 combinations_reduce(combinationsobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2441 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2442 if (lz->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2443 return Py_BuildValue("O(On)", Py_TYPE(lz), lz->pool, lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2444 } else if (lz->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2445 return Py_BuildValue("O(()n)", Py_TYPE(lz), lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2446 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2447 PyObject *indices;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2448 Py_ssize_t i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2449
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2450 /* we must pickle the indices and use them for setstate */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2451 indices = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2452 if (!indices)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2453 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2454 for (i=0; i<lz->r; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2455 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2456 PyObject* index = PyLong_FromSsize_t(lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2457 if (!index) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2458 Py_DECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2459 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2460 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2461 PyTuple_SET_ITEM(indices, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2462 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2463
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2464 return Py_BuildValue("O(On)N", Py_TYPE(lz), lz->pool, lz->r, indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2465 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2466 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2467
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2468 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2469 combinations_setstate(combinationsobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2470 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2471 PyObject *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2472 Py_ssize_t i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2473 Py_ssize_t n = PyTuple_GET_SIZE(lz->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2474
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2475 if (!PyTuple_Check(state) || PyTuple_GET_SIZE(state) != lz->r)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2476 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2477 PyErr_SetString(PyExc_ValueError, "invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2478 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2479 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2480
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2481 for (i=0; i<lz->r; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2482 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2483 Py_ssize_t max;
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diff changeset
2484 PyObject* indexObject = PyTuple_GET_ITEM(state, i);
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diff changeset
2485 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2486 if (index == -1 && PyErr_Occurred())
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diff changeset
2487 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2488 max = i + n - lz->r;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2489 /* clamp the index (beware of negative max) */
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diff changeset
2490 if (index > max)
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2491 index = max;
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2492 if (index < 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2493 index = 0;
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diff changeset
2494 lz->indices[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2495 }
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2496
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2497 result = PyTuple_New(lz->r);
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diff changeset
2498 if (result == NULL)
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2499 return NULL;
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2500 for (i=0; i<lz->r; i++) {
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diff changeset
2501 PyObject *element = PyTuple_GET_ITEM(lz->pool, lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2502 Py_INCREF(element);
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diff changeset
2503 PyTuple_SET_ITEM(result, i, element);
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diff changeset
2504 }
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2505
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diff changeset
2506 Py_CLEAR(lz->result);
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2507 lz->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2508 Py_RETURN_NONE;
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2509 }
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2510
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2511 static PyMethodDef combinations_methods[] = {
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diff changeset
2512 {"__reduce__", (PyCFunction)combinations_reduce, METH_NOARGS,
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diff changeset
2513 reduce_doc},
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diff changeset
2514 {"__setstate__", (PyCFunction)combinations_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2515 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2516 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2517 };
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2518
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2519 PyDoc_STRVAR(combinations_doc,
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a790f84fbafa Fix docstrings for itertools combinatoric functions.
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2520 "combinations(iterable, r) --> combinations object\n\
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2521 \n\
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2522 Return successive r-length combinations of elements in the iterable.\n\n\
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2523 combinations(range(4), 3) --> (0,1,2), (0,1,3), (0,2,3), (1,2,3)");
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2524
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2525 static PyTypeObject combinations_type = {
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2526 PyVarObject_HEAD_INIT(NULL, 0)
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2527 "itertools.combinations", /* tp_name */
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2528 sizeof(combinationsobject), /* tp_basicsize */
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2529 0, /* tp_itemsize */
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2530 /* methods */
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2531 (destructor)combinations_dealloc, /* tp_dealloc */
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2532 0, /* tp_print */
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2533 0, /* tp_getattr */
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2534 0, /* tp_setattr */
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2535 0, /* tp_reserved */
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2536 0, /* tp_repr */
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2537 0, /* tp_as_number */
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2538 0, /* tp_as_sequence */
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2539 0, /* tp_as_mapping */
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2540 0, /* tp_hash */
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2541 0, /* tp_call */
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2542 0, /* tp_str */
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2543 PyObject_GenericGetAttr, /* tp_getattro */
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2544 0, /* tp_setattro */
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2545 0, /* tp_as_buffer */
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2546 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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2547 Py_TPFLAGS_BASETYPE, /* tp_flags */
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2548 combinations_doc, /* tp_doc */
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2549 (traverseproc)combinations_traverse,/* tp_traverse */
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2550 0, /* tp_clear */
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2551 0, /* tp_richcompare */
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diff changeset
2552 0, /* tp_weaklistoffset */
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2553 PyObject_SelfIter, /* tp_iter */
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2554 (iternextfunc)combinations_next, /* tp_iternext */
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diff changeset
2555 combinations_methods, /* tp_methods */
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2556 0, /* tp_members */
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diff changeset
2557 0, /* tp_getset */
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diff changeset
2558 0, /* tp_base */
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2559 0, /* tp_dict */
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2560 0, /* tp_descr_get */
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2561 0, /* tp_descr_set */
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2562 0, /* tp_dictoffset */
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2563 0, /* tp_init */
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2564 0, /* tp_alloc */
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2565 combinations_new, /* tp_new */
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2566 PyObject_GC_Del, /* tp_free */
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2567 };
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2568
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2569
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
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2570 /* combinations with replacement object *******************************************/
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
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2571
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2572 /* Equivalent to:
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2573
61466
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diff changeset
2574 def combinations_with_replacement(iterable, r):
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diff changeset
2575 "combinations_with_replacement('ABC', 2) --> AA AB AC BB BC CC"
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diff changeset
2576 # number items returned: (n+r-1)! / r! / (n-1)!
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diff changeset
2577 pool = tuple(iterable)
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2578 n = len(pool)
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2579 indices = [0] * r
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2580 yield tuple(pool[i] for i in indices)
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2581 while 1:
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2582 for i in reversed(range(r)):
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2583 if indices[i] != n - 1:
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2584 break
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2585 else:
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2586 return
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2587 indices[i:] = [indices[i] + 1] * (r - i)
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2588 yield tuple(pool[i] for i in indices)
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2589
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2590 def combinations_with_replacement2(iterable, r):
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2591 'Alternate version that filters from product()'
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2592 pool = tuple(iterable)
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2593 n = len(pool)
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2594 for indices in product(range(n), repeat=r):
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2595 if sorted(indices) == list(indices):
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2596 yield tuple(pool[i] for i in indices)
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2597 */
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2598 typedef struct {
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2599 PyObject_HEAD
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2600 PyObject *pool; /* input converted to a tuple */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2601 Py_ssize_t *indices; /* one index per result element */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2602 PyObject *result; /* most recently returned result tuple */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2603 Py_ssize_t r; /* size of result tuple */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2604 int stopped; /* set to 1 when the cwr iterator is exhausted */
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2605 } cwrobject;
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2606
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2607 static PyTypeObject cwr_type;
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2608
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2609 static PyObject *
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2610 cwr_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2611 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2612 cwrobject *co;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2613 Py_ssize_t n;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2614 Py_ssize_t r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2615 PyObject *pool = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2616 PyObject *iterable = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2617 Py_ssize_t *indices = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2618 Py_ssize_t i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2619 static char *kwargs[] = {"iterable", "r", NULL};
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2620
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2621 if (!PyArg_ParseTupleAndKeywords(args, kwds, "On:combinations_with_replacement", kwargs,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2622 &iterable, &r))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2623 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2624
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2625 pool = PySequence_Tuple(iterable);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2626 if (pool == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2627 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2628 n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2629 if (r < 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2630 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2631 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2632 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2633
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2634 indices = PyMem_Malloc(r * sizeof(Py_ssize_t));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2635 if (indices == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2636 PyErr_NoMemory();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2637 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2638 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2639
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2640 for (i=0 ; i<r ; i++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2641 indices[i] = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2642
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2643 /* create cwrobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2644 co = (cwrobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2645 if (co == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2646 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2647
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2648 co->pool = pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2649 co->indices = indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2650 co->result = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2651 co->r = r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2652 co->stopped = !n && r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2653
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2654 return (PyObject *)co;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2655
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2656 error:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2657 if (indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2658 PyMem_Free(indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2659 Py_XDECREF(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2660 return NULL;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2661 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2662
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2663 static void
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2664 cwr_dealloc(cwrobject *co)
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2665 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2666 PyObject_GC_UnTrack(co);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2667 Py_XDECREF(co->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2668 Py_XDECREF(co->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2669 if (co->indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2670 PyMem_Free(co->indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2671 Py_TYPE(co)->tp_free(co);
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2672 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2673
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2674 static int
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2675 cwr_traverse(cwrobject *co, visitproc visit, void *arg)
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2676 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2677 Py_VISIT(co->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2678 Py_VISIT(co->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2679 return 0;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2680 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2681
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2682 static PyObject *
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2683 cwr_next(cwrobject *co)
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2684 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2685 PyObject *elem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2686 PyObject *oldelem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2687 PyObject *pool = co->pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2688 Py_ssize_t *indices = co->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2689 PyObject *result = co->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2690 Py_ssize_t n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2691 Py_ssize_t r = co->r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2692 Py_ssize_t i, j, index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2693
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2694 if (co->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2695 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2696
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2697 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2698 /* On the first pass, initialize result tuple using the indices */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2699 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2700 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2701 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2702 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2703 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2704 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2705 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2706 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2707 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2708 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2709 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2710 /* Copy the previous result tuple or re-use it if available */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2711 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2712 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2713 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2714 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2715 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2716 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2717 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2718 elem = PyTuple_GET_ITEM(old_result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2719 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2720 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2721 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2722 Py_DECREF(old_result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2723 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2724 /* Now, we've got the only copy so we can update it in-place CPython's
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2725 empty tuple is a singleton and cached in PyTuple's freelist. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2726 assert(r == 0 || Py_REFCNT(result) == 1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2727
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2728 /* Scan indices right-to-left until finding one that is not
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2729 * at its maximum (n-1). */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2730 for (i=r-1 ; i >= 0 && indices[i] == n-1; i--)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2731 ;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2732
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2733 /* If i is negative, then the indices are all at
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2734 their maximum value and we're done. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2735 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2736 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2737
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2738 /* Increment the current index which we know is not at its
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2739 maximum. Then set all to the right to the same value. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2740 indices[i]++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2741 for (j=i+1 ; j<r ; j++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2742 indices[j] = indices[j-1];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2743
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2744 /* Update the result tuple for the new indices
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2745 starting with i, the leftmost index that changed */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2746 for ( ; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2747 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2748 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2749 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2750 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2751 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2752 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2753 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2754 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2755
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2756 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2757 return result;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2758
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2759 empty:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2760 co->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2761 return NULL;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2762 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2763
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2764 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2765 cwr_reduce(cwrobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2766 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2767 if (lz->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2768 return Py_BuildValue("O(On)", Py_TYPE(lz), lz->pool, lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2769 } else if (lz->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2770 return Py_BuildValue("O(()n)", Py_TYPE(lz), lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2771 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2772 PyObject *indices;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2773 Py_ssize_t i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2774
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2775 /* we must pickle the indices and use them for setstate */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2776 indices = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2777 if (!indices)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2778 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2779 for (i=0; i<lz->r; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2780 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2781 PyObject* index = PyLong_FromSsize_t(lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2782 if (!index) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2783 Py_DECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2784 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2785 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2786 PyTuple_SET_ITEM(indices, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2787 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2788
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2789 return Py_BuildValue("O(On)N", Py_TYPE(lz), lz->pool, lz->r, indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2790 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2791 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2792
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2793 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2794 cwr_setstate(cwrobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2795 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2796 PyObject *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2797 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2798
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2799 if (!PyTuple_Check(state) || PyTuple_GET_SIZE(state) != lz->r)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2800 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2801 PyErr_SetString(PyExc_ValueError, "invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2802 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2803 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2804
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2805 n = PyTuple_GET_SIZE(lz->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2806 for (i=0; i<lz->r; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2807 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2808 PyObject* indexObject = PyTuple_GET_ITEM(state, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2809 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2810 if (index < 0 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2811 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2812 /* clamp the index */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2813 if (index < 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2814 index = 0;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2815 else if (index > n-1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2816 index = n-1;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2817 lz->indices[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2818 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2819 result = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2820 if (result == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2821 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2822 for (i=0; i<lz->r; i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2823 PyObject *element = PyTuple_GET_ITEM(lz->pool, lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2824 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2825 PyTuple_SET_ITEM(result, i, element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2826 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2827 Py_CLEAR(lz->result);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2828 lz->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2829 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2830 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2831
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2832 static PyMethodDef cwr_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2833 {"__reduce__", (PyCFunction)cwr_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2834 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2835 {"__setstate__", (PyCFunction)cwr_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2836 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2837 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2838 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2839
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2840 PyDoc_STRVAR(cwr_doc,
57344
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
parents: 57042
diff changeset
2841 "combinations_with_replacement(iterable, r) --> combinations_with_replacement object\n\
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2842 \n\
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2843 Return successive r-length combinations of elements in the iterable\n\
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2844 allowing individual elements to have successive repeats.\n\
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2845 combinations_with_replacement('ABC', 2) --> AA AB AC BB BC CC");
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2846
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2847 static PyTypeObject cwr_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2848 PyVarObject_HEAD_INIT(NULL, 0)
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2849 "itertools.combinations_with_replacement", /* tp_name */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2850 sizeof(cwrobject), /* tp_basicsize */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2851 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2852 /* methods */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2853 (destructor)cwr_dealloc, /* tp_dealloc */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2854 0, /* tp_print */
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diff changeset
2855 0, /* tp_getattr */
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diff changeset
2856 0, /* tp_setattr */
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diff changeset
2857 0, /* tp_reserved */
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diff changeset
2858 0, /* tp_repr */
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diff changeset
2859 0, /* tp_as_number */
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diff changeset
2860 0, /* tp_as_sequence */
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diff changeset
2861 0, /* tp_as_mapping */
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diff changeset
2862 0, /* tp_hash */
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diff changeset
2863 0, /* tp_call */
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diff changeset
2864 0, /* tp_str */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2865 PyObject_GenericGetAttr, /* tp_getattro */
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2866 0, /* tp_setattro */
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diff changeset
2867 0, /* tp_as_buffer */
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diff changeset
2868 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2869 Py_TPFLAGS_BASETYPE, /* tp_flags */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2870 cwr_doc, /* tp_doc */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2871 (traverseproc)cwr_traverse, /* tp_traverse */
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diff changeset
2872 0, /* tp_clear */
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diff changeset
2873 0, /* tp_richcompare */
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parents: 57525
diff changeset
2874 0, /* tp_weaklistoffset */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2875 PyObject_SelfIter, /* tp_iter */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2876 (iternextfunc)cwr_next, /* tp_iternext */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2877 cwr_methods, /* tp_methods */
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diff changeset
2878 0, /* tp_members */
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diff changeset
2879 0, /* tp_getset */
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diff changeset
2880 0, /* tp_base */
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diff changeset
2881 0, /* tp_dict */
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diff changeset
2882 0, /* tp_descr_get */
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diff changeset
2883 0, /* tp_descr_set */
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diff changeset
2884 0, /* tp_dictoffset */
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diff changeset
2885 0, /* tp_init */
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
2886 0, /* tp_alloc */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2887 cwr_new, /* tp_new */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2888 PyObject_GC_Del, /* tp_free */
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2889 };
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2890
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2891
45773
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2892 /* permutations object ************************************************************
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2893
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diff changeset
2894 def permutations(iterable, r=None):
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2895 'permutations(range(3), 2) --> (0,1) (0,2) (1,0) (1,2) (2,0) (2,1)'
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diff changeset
2896 pool = tuple(iterable)
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2897 n = len(pool)
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2898 r = n if r is None else r
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diff changeset
2899 indices = range(n)
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diff changeset
2900 cycles = range(n-r+1, n+1)[::-1]
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2901 yield tuple(pool[i] for i in indices[:r])
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2902 while n:
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2903 for i in reversed(range(r)):
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diff changeset
2904 cycles[i] -= 1
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2905 if cycles[i] == 0:
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diff changeset
2906 indices[i:] = indices[i+1:] + indices[i:i+1]
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diff changeset
2907 cycles[i] = n - i
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diff changeset
2908 else:
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diff changeset
2909 j = cycles[i]
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diff changeset
2910 indices[i], indices[-j] = indices[-j], indices[i]
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diff changeset
2911 yield tuple(pool[i] for i in indices[:r])
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diff changeset
2912 break
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diff changeset
2913 else:
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diff changeset
2914 return
45773
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2915 */
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diff changeset
2916
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
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diff changeset
2917 typedef struct {
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diff changeset
2918 PyObject_HEAD
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diff changeset
2919 PyObject *pool; /* input converted to a tuple */
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diff changeset
2920 Py_ssize_t *indices; /* one index per element in the pool */
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diff changeset
2921 Py_ssize_t *cycles; /* one rollover counter per element in the result */
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parents: 57525
diff changeset
2922 PyObject *result; /* most recently returned result tuple */
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diff changeset
2923 Py_ssize_t r; /* size of result tuple */
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diff changeset
2924 int stopped; /* set to 1 when the permutations iterator is exhausted */
45773
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diff changeset
2925 } permutationsobject;
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2926
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
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parents: 45738
diff changeset
2927 static PyTypeObject permutations_type;
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diff changeset
2928
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
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parents: 45738
diff changeset
2929 static PyObject *
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parents: 45738
diff changeset
2930 permutations_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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parents: 45738
diff changeset
2931 {
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diff changeset
2932 permutationsobject *po;
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diff changeset
2933 Py_ssize_t n;
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diff changeset
2934 Py_ssize_t r;
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diff changeset
2935 PyObject *robj = Py_None;
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diff changeset
2936 PyObject *pool = NULL;
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diff changeset
2937 PyObject *iterable = NULL;
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2938 Py_ssize_t *indices = NULL;
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2939 Py_ssize_t *cycles = NULL;
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diff changeset
2940 Py_ssize_t i;
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diff changeset
2941 static char *kwargs[] = {"iterable", "r", NULL};
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2942
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2943 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:permutations", kwargs,
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diff changeset
2944 &iterable, &robj))
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diff changeset
2945 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2946
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2947 pool = PySequence_Tuple(iterable);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2948 if (pool == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2949 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2950 n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2951
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2952 r = n;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2953 if (robj != Py_None) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2954 if (!PyLong_Check(robj)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2955 PyErr_SetString(PyExc_TypeError, "Expected int as r");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2956 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2957 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2958 r = PyLong_AsSsize_t(robj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2959 if (r == -1 && PyErr_Occurred())
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2960 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2961 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2962 if (r < 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2963 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2964 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2965 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2966
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2967 indices = PyMem_Malloc(n * sizeof(Py_ssize_t));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2968 cycles = PyMem_Malloc(r * sizeof(Py_ssize_t));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2969 if (indices == NULL || cycles == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2970 PyErr_NoMemory();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2971 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2972 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2973
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2974 for (i=0 ; i<n ; i++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2975 indices[i] = i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2976 for (i=0 ; i<r ; i++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2977 cycles[i] = n - i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2978
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2979 /* create permutationsobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2980 po = (permutationsobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2981 if (po == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2982 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2983
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2984 po->pool = pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2985 po->indices = indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2986 po->cycles = cycles;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2987 po->result = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2988 po->r = r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2989 po->stopped = r > n ? 1 : 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2990
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2991 return (PyObject *)po;
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
2992
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
2993 error:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2994 if (indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2995 PyMem_Free(indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2996 if (cycles != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2997 PyMem_Free(cycles);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2998 Py_XDECREF(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2999 return NULL;
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3000 }
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3001
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3002 static void
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3003 permutations_dealloc(permutationsobject *po)
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3004 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3005 PyObject_GC_UnTrack(po);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3006 Py_XDECREF(po->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3007 Py_XDECREF(po->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3008 PyMem_Free(po->indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3009 PyMem_Free(po->cycles);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3010 Py_TYPE(po)->tp_free(po);
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3011 }
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3012
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3013 static int
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3014 permutations_traverse(permutationsobject *po, visitproc visit, void *arg)
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3015 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3016 Py_VISIT(po->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3017 Py_VISIT(po->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3018 return 0;
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3019 }
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3020
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3021 static PyObject *
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3022 permutations_next(permutationsobject *po)
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3023 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3024 PyObject *elem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3025 PyObject *oldelem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3026 PyObject *pool = po->pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3027 Py_ssize_t *indices = po->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3028 Py_ssize_t *cycles = po->cycles;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3029 PyObject *result = po->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3030 Py_ssize_t n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3031 Py_ssize_t r = po->r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3032 Py_ssize_t i, j, k, index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3033
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3034 if (po->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3035 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3036
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3037 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3038 /* On the first pass, initialize result tuple using the indices */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3039 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3040 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3041 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3042 po->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3043 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3044 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3045 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3046 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3047 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3048 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3049 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3050 if (n == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3051 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3052
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3053 /* Copy the previous result tuple or re-use it if available */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3054 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3055 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3056 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3057 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3058 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3059 po->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3060 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3061 elem = PyTuple_GET_ITEM(old_result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3062 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3063 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3064 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3065 Py_DECREF(old_result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3066 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3067 /* Now, we've got the only copy so we can update it in-place */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3068 assert(r == 0 || Py_REFCNT(result) == 1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3069
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3070 /* Decrement rightmost cycle, moving leftward upon zero rollover */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3071 for (i=r-1 ; i>=0 ; i--) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3072 cycles[i] -= 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3073 if (cycles[i] == 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3074 /* rotatation: indices[i:] = indices[i+1:] + indices[i:i+1] */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3075 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3076 for (j=i ; j<n-1 ; j++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3077 indices[j] = indices[j+1];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3078 indices[n-1] = index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3079 cycles[i] = n - i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3080 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3081 j = cycles[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3082 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3083 indices[i] = indices[n-j];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3084 indices[n-j] = index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3085
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3086 for (k=i; k<r ; k++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3087 /* start with i, the leftmost element that changed */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3088 /* yield tuple(pool[k] for k in indices[:r]) */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3089 index = indices[k];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3090 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3091 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3092 oldelem = PyTuple_GET_ITEM(result, k);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3093 PyTuple_SET_ITEM(result, k, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3094 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3095 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3096 break;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3097 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3098 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3099 /* If i is negative, then the cycles have all
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3100 rolled-over and we're done. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3101 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3102 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3103 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3104 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3105 return result;
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3106
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3107 empty:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3108 po->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3109 return NULL;
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3110 }
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3111
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3112 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3113 permutations_reduce(permutationsobject *po)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3114 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3115 if (po->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3116 return Py_BuildValue("O(On)", Py_TYPE(po), po->pool, po->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3117 } else if (po->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3118 return Py_BuildValue("O(()n)", Py_TYPE(po), po->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3119 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3120 PyObject *indices=NULL, *cycles=NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3121 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3122
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3123 /* we must pickle the indices and cycles and use them for setstate */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3124 n = PyTuple_GET_SIZE(po->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3125 indices = PyTuple_New(n);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3126 if (indices == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3127 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3128 for (i=0; i<n; i++){
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3129 PyObject* index = PyLong_FromSsize_t(po->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3130 if (!index)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3131 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3132 PyTuple_SET_ITEM(indices, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3133 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3134
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3135 cycles = PyTuple_New(po->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3136 if (cycles == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3137 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3138 for (i=0; i<po->r; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3139 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3140 PyObject* index = PyLong_FromSsize_t(po->cycles[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3141 if (!index)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3142 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3143 PyTuple_SET_ITEM(cycles, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3144 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3145 return Py_BuildValue("O(On)(NN)", Py_TYPE(po),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3146 po->pool, po->r,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3147 indices, cycles);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3148 err:
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3149 Py_XDECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3150 Py_XDECREF(cycles);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3151 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3152 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3153 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3154
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3155 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3156 permutations_setstate(permutationsobject *po, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3157 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3158 PyObject *indices, *cycles, *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3159 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3160
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3161 if (!PyArg_ParseTuple(state, "O!O!",
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3162 &PyTuple_Type, &indices,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3163 &PyTuple_Type, &cycles))
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3164 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3165
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3166 n = PyTuple_GET_SIZE(po->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3167 if (PyTuple_GET_SIZE(indices) != n ||
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3168 PyTuple_GET_SIZE(cycles) != po->r)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3169 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3170 PyErr_SetString(PyExc_ValueError, "invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3171 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3172 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3173
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3174 for (i=0; i<n; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3175 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3176 PyObject* indexObject = PyTuple_GET_ITEM(indices, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3177 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3178 if (index < 0 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3179 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3180 /* clamp the index */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3181 if (index < 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3182 index = 0;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3183 else if (index > n-1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3184 index = n-1;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3185 po->indices[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3186 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3187
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3188 for (i=0; i<po->r; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3189 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3190 PyObject* indexObject = PyTuple_GET_ITEM(cycles, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3191 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3192 if (index < 0 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3193 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3194 if (index < 1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3195 index = 1;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3196 else if (index > n-i)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3197 index = n-i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3198 po->cycles[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3199 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3200 result = PyTuple_New(po->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3201 if (result == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3202 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3203 for (i=0; i<po->r; i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3204 PyObject *element = PyTuple_GET_ITEM(po->pool, po->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3205 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3206 PyTuple_SET_ITEM(result, i, element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3207 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3208 Py_CLEAR(po->result);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3209 po->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3210 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3211 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3212
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3213 static PyMethodDef permuations_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3214 {"__reduce__", (PyCFunction)permutations_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3215 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3216 {"__setstate__", (PyCFunction)permutations_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3217 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3218 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3219 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3220
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Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3221 PyDoc_STRVAR(permutations_doc,
47555
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Georg Brandl <georg@python.org>
parents: 46238
diff changeset
3222 "permutations(iterable[, r]) --> permutations object\n\
45773
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Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3223 \n\
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3224 Return successive r-length permutations of elements in the iterable.\n\n\
47555
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Georg Brandl <georg@python.org>
parents: 46238
diff changeset
3225 permutations(range(3), 2) --> (0,1), (0,2), (1,0), (1,2), (2,0), (2,1)");
45773
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Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3226
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3227 static PyTypeObject permutations_type = {
61466
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diff changeset
3228 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3229 "itertools.permutations", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3230 sizeof(permutationsobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3231 0, /* tp_itemsize */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3232 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3233 (destructor)permutations_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3234 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3235 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3236 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3237 0, /* tp_reserved */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3238 0, /* tp_repr */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3239 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3240 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3241 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3242 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3243 0, /* tp_call */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3244 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3245 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3246 0, /* tp_setattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3247 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3248 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3249 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3250 permutations_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3251 (traverseproc)permutations_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3252 0, /* tp_clear */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3253 0, /* tp_richcompare */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3254 0, /* tp_weaklistoffset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3255 PyObject_SelfIter, /* tp_iter */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3256 (iternextfunc)permutations_next, /* tp_iternext */
76091
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3257 permuations_methods, /* tp_methods */
61466
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diff changeset
3258 0, /* tp_members */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3259 0, /* tp_getset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3260 0, /* tp_base */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3261 0, /* tp_dict */
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diff changeset
3262 0, /* tp_descr_get */
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3263 0, /* tp_descr_set */
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diff changeset
3264 0, /* tp_dictoffset */
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diff changeset
3265 0, /* tp_init */
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3266 0, /* tp_alloc */
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diff changeset
3267 permutations_new, /* tp_new */
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diff changeset
3268 PyObject_GC_Del, /* tp_free */
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3269 };
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3270
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3271 /* accumulate object ************************************************************/
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3272
5da093b49c2a Add itertools.accumulate().
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3273 typedef struct {
5da093b49c2a Add itertools.accumulate().
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3274 PyObject_HEAD
5da093b49c2a Add itertools.accumulate().
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3275 PyObject *total;
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3276 PyObject *it;
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
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3277 PyObject *binop;
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3278 } accumulateobject;
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3279
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3280 static PyTypeObject accumulate_type;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3281
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3282 static PyObject *
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3283 accumulate_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3284 {
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3285 static char *kwargs[] = {"iterable", "func", NULL};
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3286 PyObject *iterable;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3287 PyObject *it;
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3288 PyObject *binop = Py_None;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3289 accumulateobject *lz;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3290
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3291 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:accumulate",
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3292 kwargs, &iterable, &binop))
66619
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3293 return NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3294
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3295 /* Get iterator. */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3296 it = PyObject_GetIter(iterable);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3297 if (it == NULL)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3298 return NULL;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3299
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3300 /* create accumulateobject structure */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3301 lz = (accumulateobject *)type->tp_alloc(type, 0);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3302 if (lz == NULL) {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3303 Py_DECREF(it);
66619
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3304 return NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3305 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3306
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3307 if (binop != Py_None) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3308 Py_XINCREF(binop);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3309 lz->binop = binop;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3310 }
66619
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3311 lz->total = NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3312 lz->it = it;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3313 return (PyObject *)lz;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3314 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3315
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3316 static void
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3317 accumulate_dealloc(accumulateobject *lz)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3318 {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3319 PyObject_GC_UnTrack(lz);
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3320 Py_XDECREF(lz->binop);
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3321 Py_XDECREF(lz->total);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3322 Py_XDECREF(lz->it);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3323 Py_TYPE(lz)->tp_free(lz);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3324 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3325
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3326 static int
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3327 accumulate_traverse(accumulateobject *lz, visitproc visit, void *arg)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3328 {
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3329 Py_VISIT(lz->binop);
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3330 Py_VISIT(lz->it);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3331 Py_VISIT(lz->total);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3332 return 0;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3333 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3334
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3335 static PyObject *
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3336 accumulate_next(accumulateobject *lz)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3337 {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3338 PyObject *val, *oldtotal, *newtotal;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3339
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3340 val = PyIter_Next(lz->it);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3341 if (val == NULL)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3342 return NULL;
66619
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3343
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3344 if (lz->total == NULL) {
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3345 Py_INCREF(val);
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3346 lz->total = val;
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3347 return lz->total;
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3348 }
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3349
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3350 if (lz->binop == NULL)
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3351 newtotal = PyNumber_Add(lz->total, val);
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3352 else
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3353 newtotal = PyObject_CallFunctionObjArgs(lz->binop, lz->total, val, NULL);
66619
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3354 Py_DECREF(val);
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3355 if (newtotal == NULL)
66619
1098fab85e47 Simplify the signature for itertools.accumulate() to match numpy. Handle one item iterable the same way as min()/max().
Raymond Hettinger <python@rcn.com>
parents: 66589
diff changeset
3356 return NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3357
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3358 oldtotal = lz->total;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3359 lz->total = newtotal;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3360 Py_DECREF(oldtotal);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3361
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3362 Py_INCREF(newtotal);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3363 return newtotal;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3364 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3365
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3366 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3367 accumulate_reduce(accumulateobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3368 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3369 return Py_BuildValue("O(OO)O", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3370 lz->it, lz->binop?lz->binop:Py_None,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3371 lz->total?lz->total:Py_None);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3372 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3373
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3374 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3375 accumulate_setstate(accumulateobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3376 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3377 Py_CLEAR(lz->total);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3378 lz->total = state;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3379 Py_INCREF(lz->total);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3380 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3381 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3382
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3383 static PyMethodDef accumulate_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3384 {"__reduce__", (PyCFunction)accumulate_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3385 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3386 {"__setstate__", (PyCFunction)accumulate_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3387 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3388 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3389 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3390
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3391 PyDoc_STRVAR(accumulate_doc,
69022
822c7c0d27d1 Update docstrings for itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 69021
diff changeset
3392 "accumulate(iterable[, func]) --> accumulate object\n\
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3393 \n\
69022
822c7c0d27d1 Update docstrings for itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 69021
diff changeset
3394 Return series of accumulated sums (or other binary function results).");
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3395
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3396 static PyTypeObject accumulate_type = {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3397 PyVarObject_HEAD_INIT(NULL, 0)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3398 "itertools.accumulate", /* tp_name */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3399 sizeof(accumulateobject), /* tp_basicsize */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3400 0, /* tp_itemsize */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3401 /* methods */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3402 (destructor)accumulate_dealloc, /* tp_dealloc */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3403 0, /* tp_print */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3404 0, /* tp_getattr */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3405 0, /* tp_setattr */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3406 0, /* tp_reserved */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3407 0, /* tp_repr */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3408 0, /* tp_as_number */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3409 0, /* tp_as_sequence */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3410 0, /* tp_as_mapping */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3411 0, /* tp_hash */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3412 0, /* tp_call */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3413 0, /* tp_str */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3414 PyObject_GenericGetAttr, /* tp_getattro */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3415 0, /* tp_setattro */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3416 0, /* tp_as_buffer */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3417 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3418 Py_TPFLAGS_BASETYPE, /* tp_flags */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3419 accumulate_doc, /* tp_doc */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3420 (traverseproc)accumulate_traverse, /* tp_traverse */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3421 0, /* tp_clear */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3422 0, /* tp_richcompare */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3423 0, /* tp_weaklistoffset */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3424 PyObject_SelfIter, /* tp_iter */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3425 (iternextfunc)accumulate_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3426 accumulate_methods, /* tp_methods */
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3427 0, /* tp_members */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3428 0, /* tp_getset */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3429 0, /* tp_base */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3430 0, /* tp_dict */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3431 0, /* tp_descr_get */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3432 0, /* tp_descr_set */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3433 0, /* tp_dictoffset */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3434 0, /* tp_init */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3435 0, /* tp_alloc */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3436 accumulate_new, /* tp_new */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3437 PyObject_GC_Del, /* tp_free */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3438 };
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3439
45773
832c820e9d14 Merged revisions 61239-61249,61252-61257,61260-61264,61269-61275,61278-61279,61285-61286,61288-61290,61298,61303-61305,61312-61314,61317,61329,61332,61344,61350-61351,61363-61376,61378-61379,61382-61383,61387-61388,61392,61395-61396,61402-61403 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3440
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3441 /* compress object ************************************************************/
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3442
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3443 /* Equivalent to:
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3444
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3445 def compress(data, selectors):
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3446 "compress('ABCDEF', [1,0,1,0,1,1]) --> A C E F"
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3447 return (d for d, s in zip(data, selectors) if s)
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3448 */
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3449
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3450 typedef struct {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3451 PyObject_HEAD
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3452 PyObject *data;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3453 PyObject *selectors;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3454 } compressobject;
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3455
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3456 static PyTypeObject compress_type;
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3457
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3458 static PyObject *
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3459 compress_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3460 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3461 PyObject *seq1, *seq2;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3462 PyObject *data=NULL, *selectors=NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3463 compressobject *lz;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3464 static char *kwargs[] = {"data", "selectors", NULL};
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3465
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3466 if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO:compress", kwargs, &seq1, &seq2))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3467 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3468
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3469 data = PyObject_GetIter(seq1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3470 if (data == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3471 goto fail;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3472 selectors = PyObject_GetIter(seq2);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3473 if (selectors == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3474 goto fail;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3475
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3476 /* create compressobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3477 lz = (compressobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3478 if (lz == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3479 goto fail;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3480 lz->data = data;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3481 lz->selectors = selectors;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3482 return (PyObject *)lz;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3483
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3484 fail:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3485 Py_XDECREF(data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3486 Py_XDECREF(selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3487 return NULL;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3488 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3489
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3490 static void
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3491 compress_dealloc(compressobject *lz)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3492 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3493 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3494 Py_XDECREF(lz->data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3495 Py_XDECREF(lz->selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3496 Py_TYPE(lz)->tp_free(lz);
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3497 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3498
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3499 static int
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3500 compress_traverse(compressobject *lz, visitproc visit, void *arg)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3501 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3502 Py_VISIT(lz->data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3503 Py_VISIT(lz->selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3504 return 0;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3505 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3506
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3507 static PyObject *
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3508 compress_next(compressobject *lz)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3509 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3510 PyObject *data = lz->data, *selectors = lz->selectors;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3511 PyObject *datum, *selector;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3512 PyObject *(*datanext)(PyObject *) = *Py_TYPE(data)->tp_iternext;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3513 PyObject *(*selectornext)(PyObject *) = *Py_TYPE(selectors)->tp_iternext;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3514 int ok;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3515
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3516 while (1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3517 /* Steps: get datum, get selector, evaluate selector.
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3518 Order is important (to match the pure python version
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3519 in terms of which input gets a chance to raise an
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3520 exception first).
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3521 */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3522
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3523 datum = datanext(data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3524 if (datum == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3525 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3526
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3527 selector = selectornext(selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3528 if (selector == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3529 Py_DECREF(datum);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3530 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3531 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3532
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3533 ok = PyObject_IsTrue(selector);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3534 Py_DECREF(selector);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3535 if (ok == 1)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3536 return datum;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3537 Py_DECREF(datum);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3538 if (ok == -1)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3539 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3540 }
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3541 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3542
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3543 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3544 compress_reduce(compressobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3545 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3546 return Py_BuildValue("O(OO)", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3547 lz->data, lz->selectors);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3548 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3549
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3550 static PyMethodDef compress_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3551 {"__reduce__", (PyCFunction)compress_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3552 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3553 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3554 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3555
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3556 PyDoc_STRVAR(compress_doc,
51717
e260d6daf784 Add keyword arg support to itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 51666
diff changeset
3557 "compress(data, selectors) --> iterator over selected data\n\
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3558 \n\
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3559 Return data elements corresponding to true selector elements.\n\
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3560 Forms a shorter iterator from selected data elements using the\n\
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3561 selectors to choose the data elements.");
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3562
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3563 static PyTypeObject compress_type = {
61466
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diff changeset
3564 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
3565 "itertools.compress", /* tp_name */
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parents: 57525
diff changeset
3566 sizeof(compressobject), /* tp_basicsize */
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parents: 57525
diff changeset
3567 0, /* tp_itemsize */
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diff changeset
3568 /* methods */
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diff changeset
3569 (destructor)compress_dealloc, /* tp_dealloc */
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parents: 57525
diff changeset
3570 0, /* tp_print */
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diff changeset
3571 0, /* tp_getattr */
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diff changeset
3572 0, /* tp_setattr */
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diff changeset
3573 0, /* tp_reserved */
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diff changeset
3574 0, /* tp_repr */
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diff changeset
3575 0, /* tp_as_number */
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diff changeset
3576 0, /* tp_as_sequence */
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diff changeset
3577 0, /* tp_as_mapping */
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diff changeset
3578 0, /* tp_hash */
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diff changeset
3579 0, /* tp_call */
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diff changeset
3580 0, /* tp_str */
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diff changeset
3581 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
3582 0, /* tp_setattro */
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
3583 0, /* tp_as_buffer */
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diff changeset
3584 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
3585 Py_TPFLAGS_BASETYPE, /* tp_flags */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3586 compress_doc, /* tp_doc */
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parents: 57525
diff changeset
3587 (traverseproc)compress_traverse, /* tp_traverse */
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parents: 57525
diff changeset
3588 0, /* tp_clear */
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diff changeset
3589 0, /* tp_richcompare */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3590 0, /* tp_weaklistoffset */
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parents: 57525
diff changeset
3591 PyObject_SelfIter, /* tp_iter */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3592 (iternextfunc)compress_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3593 compress_methods, /* tp_methods */
61466
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diff changeset
3594 0, /* tp_members */
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parents: 57525
diff changeset
3595 0, /* tp_getset */
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parents: 57525
diff changeset
3596 0, /* tp_base */
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diff changeset
3597 0, /* tp_dict */
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diff changeset
3598 0, /* tp_descr_get */
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diff changeset
3599 0, /* tp_descr_set */
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diff changeset
3600 0, /* tp_dictoffset */
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diff changeset
3601 0, /* tp_init */
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parents: 57525
diff changeset
3602 0, /* tp_alloc */
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parents: 57525
diff changeset
3603 compress_new, /* tp_new */
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diff changeset
3604 PyObject_GC_Del, /* tp_free */
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
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parents: 50755
diff changeset
3605 };
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
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3606
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3607
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3608 /* filterfalse object ************************************************************/
27769
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3609
dc5e1d918055 C Code:
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3610 typedef struct {
61466
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diff changeset
3611 PyObject_HEAD
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diff changeset
3612 PyObject *func;
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diff changeset
3613 PyObject *it;
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3614 } filterfalseobject;
27769
dc5e1d918055 C Code:
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3615
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3616 static PyTypeObject filterfalse_type;
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
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3617
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
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diff changeset
3618 static PyObject *
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3619 filterfalse_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
27769
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Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3620 {
61466
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diff changeset
3621 PyObject *func, *seq;
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parents: 57525
diff changeset
3622 PyObject *it;
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diff changeset
3623 filterfalseobject *lz;
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diff changeset
3624
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diff changeset
3625 if (type == &filterfalse_type &&
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parents: 57525
diff changeset
3626 !_PyArg_NoKeywords("filterfalse()", kwds))
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diff changeset
3627 return NULL;
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diff changeset
3628
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diff changeset
3629 if (!PyArg_UnpackTuple(args, "filterfalse", 2, 2, &func, &seq))
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diff changeset
3630 return NULL;
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diff changeset
3631
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diff changeset
3632 /* Get iterator. */
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diff changeset
3633 it = PyObject_GetIter(seq);
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diff changeset
3634 if (it == NULL)
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diff changeset
3635 return NULL;
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diff changeset
3636
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diff changeset
3637 /* create filterfalseobject structure */
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diff changeset
3638 lz = (filterfalseobject *)type->tp_alloc(type, 0);
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diff changeset
3639 if (lz == NULL) {
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diff changeset
3640 Py_DECREF(it);
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diff changeset
3641 return NULL;
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3642 }
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3643 Py_INCREF(func);
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diff changeset
3644 lz->func = func;
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diff changeset
3645 lz->it = it;
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diff changeset
3646
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3647 return (PyObject *)lz;
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3648 }
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3649
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3650 static void
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diff changeset
3651 filterfalse_dealloc(filterfalseobject *lz)
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3652 {
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diff changeset
3653 PyObject_GC_UnTrack(lz);
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diff changeset
3654 Py_XDECREF(lz->func);
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diff changeset
3655 Py_XDECREF(lz->it);
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diff changeset
3656 Py_TYPE(lz)->tp_free(lz);
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3657 }
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3658
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3659 static int
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Raymond Hettinger <python@rcn.com>
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diff changeset
3660 filterfalse_traverse(filterfalseobject *lz, visitproc visit, void *arg)
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3661 {
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diff changeset
3662 Py_VISIT(lz->it);
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diff changeset
3663 Py_VISIT(lz->func);
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3664 return 0;
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3665 }
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3666
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3667 static PyObject *
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diff changeset
3668 filterfalse_next(filterfalseobject *lz)
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3669 {
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diff changeset
3670 PyObject *item;
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diff changeset
3671 PyObject *it = lz->it;
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diff changeset
3672 long ok;
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diff changeset
3673 PyObject *(*iternext)(PyObject *);
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3674
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3675 iternext = *Py_TYPE(it)->tp_iternext;
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diff changeset
3676 for (;;) {
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diff changeset
3677 item = iternext(it);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3678 if (item == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3679 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3680
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3681 if (lz->func == Py_None || lz->func == (PyObject *)&PyBool_Type) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3682 ok = PyObject_IsTrue(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3683 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3684 PyObject *good;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3685 good = PyObject_CallFunctionObjArgs(lz->func,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3686 item, NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3687 if (good == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3688 Py_DECREF(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3689 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3690 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3691 ok = PyObject_IsTrue(good);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3692 Py_DECREF(good);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3693 }
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parents: 57525
diff changeset
3694 if (!ok)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3695 return item;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3696 Py_DECREF(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3697 }
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3698 }
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3699
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3700 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3701 filterfalse_reduce(filterfalseobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3702 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3703 return Py_BuildValue("O(OO)", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3704 lz->func, lz->it);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3705 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3706
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3707 static PyMethodDef filterfalse_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3708 {"__reduce__", (PyCFunction)filterfalse_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3709 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3710 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3711 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3712
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3713 PyDoc_STRVAR(filterfalse_doc,
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3714 "filterfalse(function or None, sequence) --> filterfalse object\n\
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3715 \n\
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3716 Return those items of sequence for which function(item) is false.\n\
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3717 If function is None, return the items that are false.");
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3718
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3719 static PyTypeObject filterfalse_type = {
61466
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parents: 57525
diff changeset
3720 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3721 "itertools.filterfalse", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3722 sizeof(filterfalseobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3723 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3724 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3725 (destructor)filterfalse_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3726 0, /* tp_print */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3727 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3728 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3729 0, /* tp_reserved */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3730 0, /* tp_repr */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3731 0, /* tp_as_number */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3732 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3733 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3734 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3735 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3736 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3737 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3738 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3739 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3740 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3741 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3742 filterfalse_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3743 (traverseproc)filterfalse_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3744 0, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3745 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3746 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3747 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3748 (iternextfunc)filterfalse_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3749 filterfalse_methods, /* tp_methods */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3750 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3751 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3752 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3753 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3754 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3755 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3756 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3757 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3758 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3759 filterfalse_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3760 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3761 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3762
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3763
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3764 /* count object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3765
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3766 typedef struct {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3767 PyObject_HEAD
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3768 Py_ssize_t cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3769 PyObject *long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3770 PyObject *long_step;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3771 } countobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3772
51542
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3773 /* Counting logic and invariants:
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3774
51778
aa29d0967105 Port r69837: Fix keyword arguments for itertools.count(). Step arg without a start arg was ignored.
Raymond Hettinger <python@rcn.com>
parents: 51719
diff changeset
3775 fast_mode: when cnt an integer < PY_SSIZE_T_MAX and no step is specified.
51542
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3776
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3777 assert(cnt != PY_SSIZE_T_MAX && long_cnt == NULL && long_step==PyInt(1));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3778 Advances with: cnt += 1
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3779 When count hits Y_SSIZE_T_MAX, switch to slow_mode.
51778
aa29d0967105 Port r69837: Fix keyword arguments for itertools.count(). Step arg without a start arg was ignored.
Raymond Hettinger <python@rcn.com>
parents: 51719
diff changeset
3780
aa29d0967105 Port r69837: Fix keyword arguments for itertools.count(). Step arg without a start arg was ignored.
Raymond Hettinger <python@rcn.com>
parents: 51719
diff changeset
3781 slow_mode: when cnt == PY_SSIZE_T_MAX, step is not int(1), or cnt is a float.
51542
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3782
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3783 assert(cnt == PY_SSIZE_T_MAX && long_cnt != NULL && long_step != NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3784 All counting is done with python objects (no overflows or underflows).
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3785 Advances with: long_cnt += long_step
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3786 Step may be zero -- effectively a slow version of repeat(cnt).
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3787 Either long_cnt or long_step may be a float, Fraction, or Decimal.
51542
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3788 */
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3789
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
3790 static PyTypeObject count_type;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3791
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3792 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3793 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
3794 {
61466
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parents: 57525
diff changeset
3795 countobject *lz;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3796 int slow_mode = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3797 Py_ssize_t cnt = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3798 PyObject *long_cnt = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3799 PyObject *long_step = NULL;
69062
9a6da9bc257d Bugfix: Properly test for errors from PyLong_AsLong() in itertools.cycle.
Kristjan Valur Jonsson <sweskman@gmail.com>
parents: 66546
diff changeset
3800 long step;
61466
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parents: 57525
diff changeset
3801 static char *kwlist[] = {"start", "step", 0};
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3802
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parents: 57525
diff changeset
3803 if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OO:count",
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diff changeset
3804 kwlist, &long_cnt, &long_step))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3805 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3806
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3807 if ((long_cnt != NULL && !PyNumber_Check(long_cnt)) ||
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3808 (long_step != NULL && !PyNumber_Check(long_step))) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3809 PyErr_SetString(PyExc_TypeError, "a number is required");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3810 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3811 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3812
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3813 if (long_cnt != NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3814 cnt = PyLong_AsSsize_t(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3815 if ((cnt == -1 && PyErr_Occurred()) || !PyLong_Check(long_cnt)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3816 PyErr_Clear();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3817 slow_mode = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3818 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3819 Py_INCREF(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3820 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3821 cnt = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3822 long_cnt = PyLong_FromLong(0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3823 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3824
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3825 /* If not specified, step defaults to 1 */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3826 if (long_step == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3827 long_step = PyLong_FromLong(1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3828 if (long_step == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3829 Py_DECREF(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3830 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3831 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3832 } else
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3833 Py_INCREF(long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3834
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3835 assert(long_cnt != NULL && long_step != NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3836
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3837 /* Fast mode only works when the step is 1 */
69062
9a6da9bc257d Bugfix: Properly test for errors from PyLong_AsLong() in itertools.cycle.
Kristjan Valur Jonsson <sweskman@gmail.com>
parents: 66546
diff changeset
3838 step = PyLong_AsLong(long_step);
9a6da9bc257d Bugfix: Properly test for errors from PyLong_AsLong() in itertools.cycle.
Kristjan Valur Jonsson <sweskman@gmail.com>
parents: 66546
diff changeset
3839 if (step != 1) {
9a6da9bc257d Bugfix: Properly test for errors from PyLong_AsLong() in itertools.cycle.
Kristjan Valur Jonsson <sweskman@gmail.com>
parents: 66546
diff changeset
3840 slow_mode = 1;
9a6da9bc257d Bugfix: Properly test for errors from PyLong_AsLong() in itertools.cycle.
Kristjan Valur Jonsson <sweskman@gmail.com>
parents: 66546
diff changeset
3841 if (step == -1 && PyErr_Occurred())
9a6da9bc257d Bugfix: Properly test for errors from PyLong_AsLong() in itertools.cycle.
Kristjan Valur Jonsson <sweskman@gmail.com>
parents: 66546
diff changeset
3842 PyErr_Clear();
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3843 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3844
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3845 if (slow_mode)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3846 cnt = PY_SSIZE_T_MAX;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3847 else
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3848 Py_CLEAR(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3849
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3850 assert((cnt != PY_SSIZE_T_MAX && long_cnt == NULL && !slow_mode) ||
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3851 (cnt == PY_SSIZE_T_MAX && long_cnt != NULL && slow_mode));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3852 assert(slow_mode ||
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3853 (PyLong_Check(long_step) && PyLong_AS_LONG(long_step) == 1));
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3854
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3855 /* create countobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3856 lz = (countobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3857 if (lz == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3858 Py_XDECREF(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3859 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3860 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3861 lz->cnt = cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3862 lz->long_cnt = long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3863 lz->long_step = long_step;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3864
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3865 return (PyObject *)lz;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3866 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3867
43734
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3868 static void
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3869 count_dealloc(countobject *lz)
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3870 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3871 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3872 Py_XDECREF(lz->long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3873 Py_XDECREF(lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3874 Py_TYPE(lz)->tp_free(lz);
51661
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3875 }
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3876
51666
f308953c701f Merged revisions 69688,69690 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 51661
diff changeset
3877 static int
51661
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3878 count_traverse(countobject *lz, visitproc visit, void *arg)
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3879 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3880 Py_VISIT(lz->long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3881 Py_VISIT(lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3882 return 0;
43734
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3883 }
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3884
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3885 static PyObject *
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3886 count_nextlong(countobject *lz)
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3887 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3888 PyObject *long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3889 PyObject *stepped_up;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3890
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3891 long_cnt = lz->long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3892 if (long_cnt == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3893 /* Switch to slow_mode */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3894 long_cnt = PyLong_FromSsize_t(PY_SSIZE_T_MAX);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3895 if (long_cnt == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3896 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3897 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3898 assert(lz->cnt == PY_SSIZE_T_MAX && long_cnt != NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3899
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3900 stepped_up = PyNumber_Add(long_cnt, lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3901 if (stepped_up == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3902 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3903 lz->long_cnt = stepped_up;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3904 return long_cnt;
43734
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3905 }
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3906
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3907 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3908 count_next(countobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3909 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3910 if (lz->cnt == PY_SSIZE_T_MAX)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3911 return count_nextlong(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3912 return PyLong_FromSsize_t(lz->cnt++);
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3913 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3914
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3915 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3916 count_repr(countobject *lz)
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3917 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3918 if (lz->cnt != PY_SSIZE_T_MAX)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3919 return PyUnicode_FromFormat("count(%zd)", lz->cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3920
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3921 if (PyLong_Check(lz->long_step)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3922 long step = PyLong_AsLong(lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3923 if (step == -1 && PyErr_Occurred()) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3924 PyErr_Clear();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3925 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3926 if (step == 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3927 /* Don't display step when it is an integer equal to 1 */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3928 return PyUnicode_FromFormat("count(%R)", lz->long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3929 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3930 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3931 return PyUnicode_FromFormat("count(%R, %R)",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3932 lz->long_cnt, lz->long_step);
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3933 }
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3934
57525
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3935 static PyObject *
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3936 count_reduce(countobject *lz)
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3937 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3938 if (lz->cnt == PY_SSIZE_T_MAX)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3939 return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->long_cnt, lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3940 return Py_BuildValue("O(n)", Py_TYPE(lz), lz->cnt);
57525
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3941 }
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3942
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3943 static PyMethodDef count_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3944 {"__reduce__", (PyCFunction)count_reduce, METH_NOARGS,
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3945 reduce_doc},
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3946 {NULL, NULL} /* sentinel */
57525
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3947 };
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3948
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3949 PyDoc_STRVAR(count_doc,
62239
8319ca0d5434 Merged revisions 81889 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61466
diff changeset
3950 "count(start=0, step=1) --> count object\n\
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3951 \n\
51778
aa29d0967105 Port r69837: Fix keyword arguments for itertools.count(). Step arg without a start arg was ignored.
Raymond Hettinger <python@rcn.com>
parents: 51719
diff changeset
3952 Return a count object whose .__next__() method returns consecutive values.\n\
aa29d0967105 Port r69837: Fix keyword arguments for itertools.count(). Step arg without a start arg was ignored.
Raymond Hettinger <python@rcn.com>
parents: 51719
diff changeset
3953 Equivalent to:\n\n\
51542
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3954 def count(firstval=0, step=1):\n\
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3955 x = firstval\n\
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3956 while 1:\n\
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3957 yield x\n\
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3958 x += step\n");
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3959
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
3960 static PyTypeObject count_type = {
61466
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parents: 57525
diff changeset
3961 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3962 "itertools.count", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3963 sizeof(countobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3964 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3965 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3966 (destructor)count_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3967 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3968 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3969 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3970 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3971 (reprfunc)count_repr, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3972 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3973 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3974 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3975 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3976 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3977 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3978 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3979 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3980 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3981 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3982 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3983 count_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3984 (traverseproc)count_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3985 0, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3986 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3987 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3988 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3989 (iternextfunc)count_next, /* tp_iternext */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3990 count_methods, /* tp_methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3991 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3992 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3993 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3994 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3995 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3996 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3997 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3998 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3999 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4000 count_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4001 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4002 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4003
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4004
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4005 /* repeat object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4006
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4007 typedef struct {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4008 PyObject_HEAD
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4009 PyObject *element;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4010 Py_ssize_t cnt;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4011 } repeatobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4012
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
4013 static PyTypeObject repeat_type;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4014
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4015 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4016 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
4017 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4018 repeatobject *ro;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4019 PyObject *element;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4020 Py_ssize_t cnt = -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4021 static char *kwargs[] = {"object", "times", NULL};
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parents: 57525
diff changeset
4022
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4023 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|n:repeat", kwargs,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4024 &element, &cnt))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4025 return NULL;
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parents: 57525
diff changeset
4026
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4027 if (PyTuple_Size(args) == 2 && cnt < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4028 cnt = 0;
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parents: 57525
diff changeset
4029
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4030 ro = (repeatobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4031 if (ro == NULL)
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parents: 57525
diff changeset
4032 return NULL;
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parents: 57525
diff changeset
4033 Py_INCREF(element);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4034 ro->element = element;
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parents: 57525
diff changeset
4035 ro->cnt = cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4036 return (PyObject *)ro;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4037 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4038
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4039 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4040 repeat_dealloc(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4041 {
61466
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diff changeset
4042 PyObject_GC_UnTrack(ro);
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parents: 57525
diff changeset
4043 Py_XDECREF(ro->element);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4044 Py_TYPE(ro)->tp_free(ro);
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4045 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
4046
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
4047 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4048 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
4049 {
61466
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parents: 57525
diff changeset
4050 Py_VISIT(ro->element);
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parents: 57525
diff changeset
4051 return 0;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
4052 }
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diff changeset
4053
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
4054 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
4055 repeat_next(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4056 {
61466
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diff changeset
4057 if (ro->cnt == 0)
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diff changeset
4058 return NULL;
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diff changeset
4059 if (ro->cnt > 0)
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diff changeset
4060 ro->cnt--;
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diff changeset
4061 Py_INCREF(ro->element);
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diff changeset
4062 return ro->element;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
4063 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
4064
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4065 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4066 repeat_repr(repeatobject *ro)
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4067 {
61466
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parents: 57525
diff changeset
4068 if (ro->cnt == -1)
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parents: 57525
diff changeset
4069 return PyUnicode_FromFormat("repeat(%R)", ro->element);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4070 else
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4071 return PyUnicode_FromFormat("repeat(%R, %zd)", ro->element, ro->cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4072 }
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4073
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
4074 static PyObject *
31501
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4075 repeat_len(repeatobject *ro)
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4076 {
61466
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diff changeset
4077 if (ro->cnt == -1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4078 PyErr_SetString(PyExc_TypeError, "len() of unsized object");
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4079 return NULL;
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diff changeset
4080 }
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diff changeset
4081 return PyLong_FromSize_t(ro->cnt);
31501
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4082 }
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4083
36484
20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See:
Armin Rigo <arigo@tunes.org>
parents: 36324
diff changeset
4084 PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
4085
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4086 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4087 repeat_reduce(repeatobject *ro)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4088 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4089 /* unpickle this so that a new repeat iterator is constructed with an
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4090 * object, then call __setstate__ on it to set cnt
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4091 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4092 if (ro->cnt >= 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4093 return Py_BuildValue("O(On)", Py_TYPE(ro), ro->element, ro->cnt);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4094 else
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4095 return Py_BuildValue("O(O)", Py_TYPE(ro), ro->element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4096 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4097
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
4098 static PyMethodDef repeat_methods[] = {
61466
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diff changeset
4099 {"__length_hint__", (PyCFunction)repeat_len, METH_NOARGS, length_hint_doc},
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4100 {"__reduce__", (PyCFunction)repeat_reduce, METH_NOARGS, reduce_doc},
61466
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diff changeset
4101 {NULL, NULL} /* sentinel */
31501
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4102 };
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4103
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ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4104 PyDoc_STRVAR(repeat_doc,
51719
3dbdbc5e6d85 Add keyword arg support to itertools.repeat().
Raymond Hettinger <python@rcn.com>
parents: 51717
diff changeset
4105 "repeat(object [,times]) -> create an iterator which returns the object\n\
3dbdbc5e6d85 Add keyword arg support to itertools.repeat().
Raymond Hettinger <python@rcn.com>
parents: 51717
diff changeset
4106 for the specified number of times. If not specified, returns the object\n\
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
4107 endlessly.");
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4108
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
4109 static PyTypeObject repeat_type = {
61466
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diff changeset
4110 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
4111 "itertools.repeat", /* tp_name */
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diff changeset
4112 sizeof(repeatobject), /* tp_basicsize */
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diff changeset
4113 0, /* tp_itemsize */
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diff changeset
4114 /* methods */
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diff changeset
4115 (destructor)repeat_dealloc, /* tp_dealloc */
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diff changeset
4116 0, /* tp_print */
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diff changeset
4117 0, /* tp_getattr */
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diff changeset
4118 0, /* tp_setattr */
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parents: 57525
diff changeset
4119 0, /* tp_reserved */
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parents: 57525
diff changeset
4120 (reprfunc)repeat_repr, /* tp_repr */
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parents: 57525
diff changeset
4121 0, /* tp_as_number */
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diff changeset
4122 0, /* tp_as_sequence */
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diff changeset
4123 0, /* tp_as_mapping */
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parents: 57525
diff changeset
4124 0, /* tp_hash */
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diff changeset
4125 0, /* tp_call */
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diff changeset
4126 0, /* tp_str */
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diff changeset
4127 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
4128 0, /* tp_setattro */
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parents: 57525
diff changeset
4129 0, /* tp_as_buffer */
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diff changeset
4130 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
4131 Py_TPFLAGS_BASETYPE, /* tp_flags */
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parents: 57525
diff changeset
4132 repeat_doc, /* tp_doc */
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parents: 57525
diff changeset
4133 (traverseproc)repeat_traverse, /* tp_traverse */
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diff changeset
4134 0, /* tp_clear */
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parents: 57525
diff changeset
4135 0, /* tp_richcompare */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4136 0, /* tp_weaklistoffset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4137 PyObject_SelfIter, /* tp_iter */
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parents: 57525
diff changeset
4138 (iternextfunc)repeat_next, /* tp_iternext */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4139 repeat_methods, /* tp_methods */
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parents: 57525
diff changeset
4140 0, /* tp_members */
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parents: 57525
diff changeset
4141 0, /* tp_getset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4142 0, /* tp_base */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4143 0, /* tp_dict */
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parents: 57525
diff changeset
4144 0, /* tp_descr_get */
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parents: 57525
diff changeset
4145 0, /* tp_descr_set */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4146 0, /* tp_dictoffset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4147 0, /* tp_init */
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parents: 57525
diff changeset
4148 0, /* tp_alloc */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4149 repeat_new, /* tp_new */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4150 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4151 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4152
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4153 /* ziplongest object ************************************************************/
40893
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Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4154
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4155 #include "Python.h"
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diff changeset
4156
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Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4157 typedef struct {
61466
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diff changeset
4158 PyObject_HEAD
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parents: 57525
diff changeset
4159 Py_ssize_t tuplesize;
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diff changeset
4160 Py_ssize_t numactive;
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diff changeset
4161 PyObject *ittuple; /* tuple of iterators */
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diff changeset
4162 PyObject *result;
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diff changeset
4163 PyObject *fillvalue;
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4164 } ziplongestobject;
40893
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Thomas Wouters <thomas@python.org>
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diff changeset
4165
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4166 static PyTypeObject ziplongest_type;
40893
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Thomas Wouters <thomas@python.org>
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diff changeset
4167
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4168 static PyObject *
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4169 zip_longest_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
40893
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Thomas Wouters <thomas@python.org>
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diff changeset
4170 {
61466
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diff changeset
4171 ziplongestobject *lz;
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parents: 57525
diff changeset
4172 Py_ssize_t i;
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diff changeset
4173 PyObject *ittuple; /* tuple of iterators */
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diff changeset
4174 PyObject *result;
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diff changeset
4175 PyObject *fillvalue = Py_None;
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diff changeset
4176 Py_ssize_t tuplesize = PySequence_Length(args);
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diff changeset
4177
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diff changeset
4178 if (kwds != NULL && PyDict_CheckExact(kwds) && PyDict_Size(kwds) > 0) {
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diff changeset
4179 fillvalue = PyDict_GetItemString(kwds, "fillvalue");
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diff changeset
4180 if (fillvalue == NULL || PyDict_Size(kwds) > 1) {
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diff changeset
4181 PyErr_SetString(PyExc_TypeError,
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diff changeset
4182 "zip_longest() got an unexpected keyword argument");
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diff changeset
4183 return NULL;
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diff changeset
4184 }
61466
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4185 }
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diff changeset
4186
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diff changeset
4187 /* args must be a tuple */
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diff changeset
4188 assert(PyTuple_Check(args));
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diff changeset
4189
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diff changeset
4190 /* obtain iterators */
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diff changeset
4191 ittuple = PyTuple_New(tuplesize);
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diff changeset
4192 if (ittuple == NULL)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4193 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4194 for (i=0; i < tuplesize; ++i) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4195 PyObject *item = PyTuple_GET_ITEM(args, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4196 PyObject *it = PyObject_GetIter(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4197 if (it == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4198 if (PyErr_ExceptionMatches(PyExc_TypeError))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4199 PyErr_Format(PyExc_TypeError,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4200 "zip_longest argument #%zd must support iteration",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4201 i+1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4202 Py_DECREF(ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4203 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4204 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4205 PyTuple_SET_ITEM(ittuple, i, it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4206 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4207
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4208 /* create a result holder */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4209 result = PyTuple_New(tuplesize);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4210 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4211 Py_DECREF(ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4212 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4213 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4214 for (i=0 ; i < tuplesize ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4215 Py_INCREF(Py_None);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4216 PyTuple_SET_ITEM(result, i, Py_None);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4217 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4218
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4219 /* create ziplongestobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4220 lz = (ziplongestobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4221 if (lz == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4222 Py_DECREF(ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4223 Py_DECREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4224 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4225 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4226 lz->ittuple = ittuple;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4227 lz->tuplesize = tuplesize;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4228 lz->numactive = tuplesize;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4229 lz->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4230 Py_INCREF(fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4231 lz->fillvalue = fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4232 return (PyObject *)lz;
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4233 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4234
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4235 static void
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4236 zip_longest_dealloc(ziplongestobject *lz)
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4237 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4238 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4239 Py_XDECREF(lz->ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4240 Py_XDECREF(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4241 Py_XDECREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4242 Py_TYPE(lz)->tp_free(lz);
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4243 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4244
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4245 static int
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4246 zip_longest_traverse(ziplongestobject *lz, visitproc visit, void *arg)
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4247 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4248 Py_VISIT(lz->ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4249 Py_VISIT(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4250 Py_VISIT(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4251 return 0;
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4252 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4253
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4254 static PyObject *
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4255 zip_longest_next(ziplongestobject *lz)
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4256 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4257 Py_ssize_t i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4258 Py_ssize_t tuplesize = lz->tuplesize;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4259 PyObject *result = lz->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4260 PyObject *it;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4261 PyObject *item;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4262 PyObject *olditem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4263
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4264 if (tuplesize == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4265 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4266 if (lz->numactive == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4267 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4268 if (Py_REFCNT(result) == 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4269 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4270 for (i=0 ; i < tuplesize ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4271 it = PyTuple_GET_ITEM(lz->ittuple, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4272 if (it == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4273 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4274 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4275 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4276 item = PyIter_Next(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4277 if (item == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4278 lz->numactive -= 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4279 if (lz->numactive == 0 || PyErr_Occurred()) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4280 lz->numactive = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4281 Py_DECREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4282 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4283 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4284 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4285 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4286 PyTuple_SET_ITEM(lz->ittuple, i, NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4287 Py_DECREF(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4288 }
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4289 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4290 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4291 olditem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4292 PyTuple_SET_ITEM(result, i, item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4293 Py_DECREF(olditem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4294 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4295 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4296 result = PyTuple_New(tuplesize);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4297 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4298 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4299 for (i=0 ; i < tuplesize ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4300 it = PyTuple_GET_ITEM(lz->ittuple, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4301 if (it == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4302 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4303 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4304 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4305 item = PyIter_Next(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4306 if (item == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4307 lz->numactive -= 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4308 if (lz->numactive == 0 || PyErr_Occurred()) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4309 lz->numactive = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4310 Py_DECREF(result);
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4311 return NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4312 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4313 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4314 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4315 PyTuple_SET_ITEM(lz->ittuple, i, NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4316 Py_DECREF(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4317 }
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4318 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4319 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4320 PyTuple_SET_ITEM(result, i, item);
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4321 }
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4322 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4323 return result;
40893
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Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4324 }
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Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4325
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4326 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4327 zip_longest_reduce(ziplongestobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4328 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4329
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4330 /* Create a new tuple with empty sequences where appropriate to pickle.
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4331 * Then use setstate to set the fillvalue
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4332 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4333 int i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4334 PyObject *args = PyTuple_New(PyTuple_GET_SIZE(lz->ittuple));
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4335 if (args == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4336 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4337 for (i=0; i<PyTuple_GET_SIZE(lz->ittuple); i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4338 PyObject *elem = PyTuple_GET_ITEM(lz->ittuple, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4339 if (elem == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4340 elem = PyTuple_New(0);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4341 if (elem == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4342 Py_DECREF(args);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4343 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4344 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4345 } else
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4346 Py_INCREF(elem);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4347 PyTuple_SET_ITEM(args, i, elem);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4348 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4349 return Py_BuildValue("ONO", Py_TYPE(lz), args, lz->fillvalue);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4350 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4351
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4352 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4353 zip_longest_setstate(ziplongestobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4354 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4355 Py_CLEAR(lz->fillvalue);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4356 lz->fillvalue = state;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4357 Py_INCREF(lz->fillvalue);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4358 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4359 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4360
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4361 static PyMethodDef zip_longest_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4362 {"__reduce__", (PyCFunction)zip_longest_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4363 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4364 {"__setstate__", (PyCFunction)zip_longest_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4365 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4366 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4367 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4368
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4369 PyDoc_STRVAR(zip_longest_doc,
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4370 "zip_longest(iter1 [,iter2 [...]], [fillvalue=None]) --> zip_longest object\n\
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4371 \n\
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4372 Return an zip_longest object whose .__next__() method returns a tuple where\n\
41501
0c5019afc55b PEP 3114: rename .next() to .__next__() and add next() builtin.
Georg Brandl <georg@python.org>
parents: 40893
diff changeset
4373 the i-th element comes from the i-th iterable argument. The .__next__()\n\
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4374 method continues until the longest iterable in the argument sequence\n\
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4375 is exhausted and then it raises StopIteration. When the shorter iterables\n\
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4376 are exhausted, the fillvalue is substituted in their place. The fillvalue\n\
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4377 defaults to None or can be specified by a keyword argument.\n\
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4378 ");
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4379
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4380 static PyTypeObject ziplongest_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4381 PyVarObject_HEAD_INIT(NULL, 0)
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parents: 57525
diff changeset
4382 "itertools.zip_longest", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4383 sizeof(ziplongestobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4384 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4385 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4386 (destructor)zip_longest_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4387 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4388 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4389 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4390 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4391 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4392 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4393 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4394 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4395 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4396 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4397 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4398 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4399 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4400 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4401 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4402 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4403 zip_longest_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4404 (traverseproc)zip_longest_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4405 0, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4406 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4407 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4408 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4409 (iternextfunc)zip_longest_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4410 zip_longest_methods, /* tp_methods */
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4411 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4412 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4413 0, /* tp_base */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4414 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4415 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4416 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4417 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4418 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4419 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4420 zip_longest_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4421 PyObject_GC_Del, /* tp_free */
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4422 };
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4423
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4424 /* module level code ********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4425
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4426 PyDoc_STRVAR(module_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4427 "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
4428 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4429 Infinite iterators:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4430 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
4431 cycle(p) --> p0, p1, ... plast, p0, p1, ...\n\
28601
58db5fbd9c28 Fix docstring typo
Andrew M. Kuchling <amk@amk.ca>
parents: 28320
diff changeset
4432 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
4433 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4434 Iterators terminating on the shortest input sequence:\n\
69022
822c7c0d27d1 Update docstrings for itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 69021
diff changeset
4435 accumulate(p[, func]) --> p0, p0+p1, p0+p1+p2\n\
51163
4f607c3ae8e2 Update itertools.__doc__ to include all tools.
Raymond Hettinger <python@rcn.com>
parents: 51100
diff changeset
4436 chain(p, q, ...) --> p0, p1, ... plast, q0, q1, ... \n\
4f607c3ae8e2 Update itertools.__doc__ to include all tools.
Raymond Hettinger <python@rcn.com>
parents: 51100
diff changeset
4437 compress(data, selectors) --> (d[0] if s[0]), (d[1] if s[1]), ...\n\
4f607c3ae8e2 Update itertools.__doc__ to include all tools.
Raymond Hettinger <python@rcn.com>
parents: 51100
diff changeset
4438 dropwhile(pred, seq) --> seq[n], seq[n+1], starting when pred fails\n\
4f607c3ae8e2 Update itertools.__doc__ to include all tools.
Raymond Hettinger <python@rcn.com>
parents: 51100
diff changeset
4439 groupby(iterable[, keyfunc]) --> sub-iterators grouped by value of keyfunc(v)\n\
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4440 filterfalse(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
4441 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
4442 seq[start:stop:step]\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4443 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
4444 tee(it, n=2) --> (it1, it2 , ... itn) splits one iterator into n\n\
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4445 takewhile(pred, seq) --> seq[0], seq[1], until pred fails\n\
51163
4f607c3ae8e2 Update itertools.__doc__ to include all tools.
Raymond Hettinger <python@rcn.com>
parents: 51100
diff changeset
4446 zip_longest(p, q, ...) --> (p[0], q[0]), (p[1], q[1]), ... \n\
51165
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4447 \n\
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4448 Combinatoric generators:\n\
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4449 product(p, q, ... [repeat=1]) --> cartesian product\n\
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4450 permutations(p[, r])\n\
57344
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
parents: 57042
diff changeset
4451 combinations(p, r)\n\
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
parents: 57042
diff changeset
4452 combinations_with_replacement(p, r)\n\
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4453 ");
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4454
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4455
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
4456 static PyMethodDef module_methods[] = {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4457 {"tee", (PyCFunction)tee, METH_VARARGS, tee_doc},
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4458 {NULL, NULL} /* sentinel */
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
4459 };
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
4460
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4461
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4462 static struct PyModuleDef itertoolsmodule = {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4463 PyModuleDef_HEAD_INIT,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4464 "itertools",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4465 module_doc,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4466 -1,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4467 module_methods,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4468 NULL,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4469 NULL,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4470 NULL,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4471 NULL
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4472 };
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4473
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4474 PyMODINIT_FUNC
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4475 PyInit_itertools(void)
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4476 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4477 int i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4478 PyObject *m;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4479 char *name;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4480 PyTypeObject *typelist[] = {
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
4481 &accumulate_type,
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4482 &combinations_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4483 &cwr_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4484 &cycle_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4485 &dropwhile_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4486 &takewhile_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4487 &islice_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4488 &starmap_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4489 &chain_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4490 &compress_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4491 &filterfalse_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4492 &count_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4493 &ziplongest_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4494 &permutations_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4495 &product_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4496 &repeat_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4497 &groupby_type,
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4498 &_grouper_type,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4499 &tee_type,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4500 &teedataobject_type,
61466
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diff changeset
4501 NULL
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4502 };
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4503
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4504 Py_TYPE(&teedataobject_type) = &PyType_Type;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4505 m = PyModule_Create(&itertoolsmodule);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4506 if (m == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4507 return NULL;
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parents: 57525
diff changeset
4508
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4509 for (i=0 ; typelist[i] != NULL ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4510 if (PyType_Ready(typelist[i]) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4511 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4512 name = strchr(typelist[i]->tp_name, '.');
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4513 assert (name != NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4514 Py_INCREF(typelist[i]);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4515 PyModule_AddObject(m, name+1, (PyObject *)typelist[i]);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4516 }
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parents: 57525
diff changeset
4517
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4518 return m;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4519 }