Mercurial > cpython-lru_cache-weakref

annotate Modules/itertoolsmodule.c @ 81343:3a7cd8efc19f

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#16852: merge with 3.3.
author Ezio Melotti <ezio.melotti@gmail.com>
date Thu, 10 Jan 2013 03:29:45 +0200
parents b878df1d23b1
children eff2a7346243
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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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11
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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 }
76946
d274fa027cf5 Add safecase to silence Win64 warning.
Martin v. Löwis <martin@v.loewis.de>
parents: 76091
diff changeset
536 /* len <= LINKCELLS < INT_MAX */
d274fa027cf5 Add safecase to silence Win64 warning.
Martin v. Löwis <martin@v.loewis.de>
parents: 76091
diff changeset
537 tdo->numread = Py_SAFE_DOWNCAST(len, Py_ssize_t, int);
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
538
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
539 if (len == LINKCELLS) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
540 if (next != Py_None) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
541 if (Py_TYPE(next) != &teedataobject_type)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
542 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
543 assert(tdo->nextlink == NULL);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
544 Py_INCREF(next);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
545 tdo->nextlink = next;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
546 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
547 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
548 if (next != Py_None)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
549 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
550 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
551 return (PyObject*)tdo;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
552
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
553 err:
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
554 Py_XDECREF(tdo);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
555 PyErr_SetString(PyExc_ValueError, "Invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
556 return NULL;
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
559 static PyMethodDef teedataobject_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
560 {"__reduce__", (PyCFunction)teedataobject_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
561 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
562 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
563 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
564
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
565 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
566
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
567 static PyTypeObject teedataobject_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
568 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
569 "itertools._tee_dataobject", /* tp_name */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
570 sizeof(teedataobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
571 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
572 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
573 (destructor)teedataobject_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
574 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
575 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
576 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
577 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
578 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
579 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
580 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
581 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
582 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
583 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
584 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
585 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
586 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
587 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
588 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
589 teedataobject_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
590 (traverseproc)teedataobject_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
591 (inquiry)teedataobject_clear, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
592 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
593 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
594 0, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
595 0, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
596 teedataobject_methods, /* tp_methods */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
597 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
598 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
599 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
600 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
601 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
602 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
603 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
604 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
605 0, /* tp_alloc */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
606 teedataobject_new, /* tp_new */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
607 PyObject_GC_Del, /* tp_free */
30764
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
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
611 static PyTypeObject tee_type;
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
612
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
613 static PyObject *
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
614 tee_next(teeobject *to)
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
615 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
616 PyObject *value, *link;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
617
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
618 if (to->index >= LINKCELLS) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
619 link = teedataobject_jumplink(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
620 Py_DECREF(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
621 to->dataobj = (teedataobject *)link;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
622 to->index = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
623 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
624 value = teedataobject_getitem(to->dataobj, to->index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
625 if (value == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
626 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
627 to->index++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
628 return value;
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
629 }
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
630
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
631 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
632 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
633 {
61466
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parents: 57525
diff changeset
634 Py_VISIT((PyObject *)to->dataobj);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
635 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
636 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
637
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
638 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
639 tee_copy(teeobject *to)
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
640 {
61466
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parents: 57525
diff changeset
641 teeobject *newto;
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parents: 57525
diff changeset
642
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
643 newto = PyObject_GC_New(teeobject, &tee_type);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
644 if (newto == NULL)
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parents: 57525
diff changeset
645 return NULL;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
646 Py_INCREF(to->dataobj);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
647 newto->dataobj = to->dataobj;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
648 newto->index = to->index;
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649 newto->weakreflist = NULL;
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650 PyObject_GC_Track(newto);
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651 return (PyObject *)newto;
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Raymond Hettinger <python@rcn.com>
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diff changeset
652 }
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
653
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
654 PyDoc_STRVAR(teecopy_doc, "Returns an independent iterator.");
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
655
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
656 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
657 tee_fromiterable(PyObject *iterable)
3096fab2a19c Improve the implementation of itertools.tee().
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parents: 30800
diff changeset
658 {
61466
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diff changeset
659 teeobject *to;
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diff changeset
660 PyObject *it = NULL;
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661
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diff changeset
662 it = PyObject_GetIter(iterable);
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diff changeset
663 if (it == NULL)
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664 return NULL;
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diff changeset
665 if (PyObject_TypeCheck(it, &tee_type)) {
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diff changeset
666 to = (teeobject *)tee_copy((teeobject *)it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
667 goto done;
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diff changeset
668 }
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diff changeset
669
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diff changeset
670 to = PyObject_GC_New(teeobject, &tee_type);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
671 if (to == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
672 goto done;
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
673 to->dataobj = (teedataobject *)teedataobject_newinternal(it);
61466
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diff changeset
674 if (!to->dataobj) {
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diff changeset
675 PyObject_GC_Del(to);
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diff changeset
676 to = NULL;
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diff changeset
677 goto done;
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diff changeset
678 }
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diff changeset
679
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680 to->index = 0;
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681 to->weakreflist = NULL;
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682 PyObject_GC_Track(to);
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3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
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diff changeset
683 done:
61466
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diff changeset
684 Py_XDECREF(it);
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diff changeset
685 return (PyObject *)to;
30900
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
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
688 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
689 tee_new(PyTypeObject *type, PyObject *args, PyObject *kw)
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
690 {
61466
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diff changeset
691 PyObject *iterable;
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diff changeset
692
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
693 if (!PyArg_UnpackTuple(args, "_tee", 1, 1, &iterable))
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
694 return NULL;
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diff changeset
695 return tee_fromiterable(iterable);
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
696 }
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
697
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
698 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
699 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
700 {
61466
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701 if (to->weakreflist != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
702 PyObject_ClearWeakRefs((PyObject *) to);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
703 Py_CLEAR(to->dataobj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
704 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
705 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36684
diff changeset
706
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
707 static void
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
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diff changeset
708 tee_dealloc(teeobject *to)
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
709 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
710 PyObject_GC_UnTrack(to);
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parents: 57525
diff changeset
711 tee_clear(to);
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diff changeset
712 PyObject_GC_Del(to);
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
713 }
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
714
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
715 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
716 tee_reduce(teeobject *to)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
717 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
718 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
719 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
720
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
721 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
722 tee_setstate(teeobject *to, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
723 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
724 teedataobject *tdo;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
725 int index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
726 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
727 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
728 if (index < 0 || index > LINKCELLS) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
729 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
730 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
731 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
732 Py_CLEAR(to->dataobj);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
733 to->dataobj = tdo;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
734 Py_INCREF(to->dataobj);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
735 to->index = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
736 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
737 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
738
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
739 PyDoc_STRVAR(teeobject_doc,
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
740 "Iterator wrapped to make it copyable");
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
741
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
742 static PyMethodDef tee_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
743 {"__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
744 {"__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
745 {"__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
746 {NULL, NULL} /* sentinel */
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
747 };
30764
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
748
b948e775a79e Added itertools.tee()
Raymond Hettinger <python@rcn.com>
parents: 30240
diff changeset
749 static PyTypeObject tee_type = {
61466
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parents: 57525
diff changeset
750 PyVarObject_HEAD_INIT(NULL, 0)
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
751 "itertools._tee", /* tp_name */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
752 sizeof(teeobject), /* tp_basicsize */
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parents: 57525
diff changeset
753 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
754 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
755 (destructor)tee_dealloc, /* tp_dealloc */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
756 0, /* tp_print */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
757 0, /* tp_getattr */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
758 0, /* tp_setattr */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
759 0, /* tp_reserved */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
760 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
761 0, /* tp_as_number */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
762 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
763 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
764 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
765 0, /* tp_call */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
766 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
767 0, /* tp_getattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
768 0, /* tp_setattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
769 0, /* tp_as_buffer */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
770 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
771 teeobject_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
772 (traverseproc)tee_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
773 (inquiry)tee_clear, /* tp_clear */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
774 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
775 offsetof(teeobject, weakreflist), /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
776 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
777 (iternextfunc)tee_next, /* tp_iternext */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
778 tee_methods, /* tp_methods */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
779 0, /* tp_members */
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diff changeset
780 0, /* tp_getset */
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diff changeset
781 0, /* tp_base */
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782 0, /* tp_dict */
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783 0, /* tp_descr_get */
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784 0, /* tp_descr_set */
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785 0, /* tp_dictoffset */
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786 0, /* tp_init */
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787 0, /* tp_alloc */
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diff changeset
788 tee_new, /* tp_new */
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diff changeset
789 PyObject_GC_Del, /* tp_free */
30764
b948e775a79e Added itertools.tee()
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parents: 30240
diff changeset
790 };
b948e775a79e Added itertools.tee()
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diff changeset
791
30900
3096fab2a19c Improve the implementation of itertools.tee().
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parents: 30800
diff changeset
792 static PyObject *
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
793 tee(PyObject *self, PyObject *args)
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
794 {
61466
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diff changeset
795 Py_ssize_t i, n=2;
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diff changeset
796 PyObject *it, *iterable, *copyable, *result;
72926
db4aa878cea2 Port SetAttrString/HasAttrString to SetAttrId/GetAttrId.
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parents: 72925
diff changeset
797 _Py_IDENTIFIER(__copy__);
61466
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798
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799 if (!PyArg_ParseTuple(args, "O|n", &iterable, &n))
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800 return NULL;
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801 if (n < 0) {
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802 PyErr_SetString(PyExc_ValueError, "n must be >= 0");
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803 return NULL;
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804 }
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805 result = PyTuple_New(n);
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806 if (result == NULL)
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807 return NULL;
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808 if (n == 0)
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809 return result;
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810 it = PyObject_GetIter(iterable);
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811 if (it == NULL) {
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812 Py_DECREF(result);
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813 return NULL;
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814 }
72926
db4aa878cea2 Port SetAttrString/HasAttrString to SetAttrId/GetAttrId.
Martin v. Löwis <martin@v.loewis.de>
parents: 72925
diff changeset
815 if (!_PyObject_HasAttrId(it, &PyId___copy__)) {
61466
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816 copyable = tee_fromiterable(it);
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817 Py_DECREF(it);
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818 if (copyable == NULL) {
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819 Py_DECREF(result);
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820 return NULL;
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821 }
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822 } else
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823 copyable = it;
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824 PyTuple_SET_ITEM(result, 0, copyable);
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825 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
826
5e33219492bc Add API for static strings, primarily good for identifiers.
Martin v. Löwis <martin@v.loewis.de>
parents: 72460
diff changeset
827 copyable = _PyObject_CallMethodId(copyable, &PyId___copy__, NULL);
61466
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828 if (copyable == NULL) {
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829 Py_DECREF(result);
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830 return NULL;
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831 }
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832 PyTuple_SET_ITEM(result, i, copyable);
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833 }
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834 return result;
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835 }
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836
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
837 PyDoc_STRVAR(tee_doc,
3096fab2a19c Improve the implementation of itertools.tee().
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parents: 30800
diff changeset
838 "tee(iterable, n=2) --> tuple of n independent iterators.");
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
839
3096fab2a19c Improve the implementation of itertools.tee().
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diff changeset
840
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diff changeset
841 /* cycle object **********************************************************/
61fa6b55c1de User requested changes to the itertools module.
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842
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843 typedef struct {
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844 PyObject_HEAD
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845 PyObject *it;
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846 PyObject *saved;
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847 int firstpass;
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diff changeset
848 } cycleobject;
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Raymond Hettinger <python@rcn.com>
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849
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45dc33433323 SF patch #770521: make itertools type declarations static
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parents: 29535
diff changeset
850 static PyTypeObject cycle_type;
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851
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
852 static PyObject *
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
853 cycle_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
61fa6b55c1de User requested changes to the itertools module.
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parents: 27770
diff changeset
854 {
61466
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855 PyObject *it;
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856 PyObject *iterable;
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857 PyObject *saved;
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858 cycleobject *lz;
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859
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860 if (type == &cycle_type && !_PyArg_NoKeywords("cycle()", kwds))
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861 return NULL;
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862
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863 if (!PyArg_UnpackTuple(args, "cycle", 1, 1, &iterable))
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864 return NULL;
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865
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866 /* Get iterator. */
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867 it = PyObject_GetIter(iterable);
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868 if (it == NULL)
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869 return NULL;
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870
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871 saved = PyList_New(0);
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872 if (saved == NULL) {
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873 Py_DECREF(it);
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874 return NULL;
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875 }
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876
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877 /* create cycleobject structure */
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878 lz = (cycleobject *)type->tp_alloc(type, 0);
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879 if (lz == NULL) {
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880 Py_DECREF(it);
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881 Py_DECREF(saved);
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882 return NULL;
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883 }
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884 lz->it = it;
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885 lz->saved = saved;
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886 lz->firstpass = 0;
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887
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888 return (PyObject *)lz;
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diff changeset
889 }
61fa6b55c1de User requested changes to the itertools module.
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890
61fa6b55c1de User requested changes to the itertools module.
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891 static void
61fa6b55c1de User requested changes to the itertools module.
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892 cycle_dealloc(cycleobject *lz)
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893 {
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894 PyObject_GC_UnTrack(lz);
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895 Py_XDECREF(lz->saved);
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896 Py_XDECREF(lz->it);
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897 Py_TYPE(lz)->tp_free(lz);
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diff changeset
898 }
61fa6b55c1de User requested changes to the itertools module.
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899
61fa6b55c1de User requested changes to the itertools module.
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900 static int
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901 cycle_traverse(cycleobject *lz, visitproc visit, void *arg)
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
902 {
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903 Py_VISIT(lz->it);
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904 Py_VISIT(lz->saved);
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905 return 0;
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906 }
61fa6b55c1de User requested changes to the itertools module.
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907
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908 static PyObject *
61fa6b55c1de User requested changes to the itertools module.
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909 cycle_next(cycleobject *lz)
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diff changeset
910 {
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911 PyObject *item;
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912 PyObject *it;
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913 PyObject *tmp;
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914
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915 while (1) {
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916 item = PyIter_Next(lz->it);
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917 if (item != NULL) {
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918 if (!lz->firstpass && PyList_Append(lz->saved, item)) {
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919 Py_DECREF(item);
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920 return NULL;
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921 }
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922 return item;
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923 }
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924 if (PyErr_Occurred()) {
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925 if (PyErr_ExceptionMatches(PyExc_StopIteration))
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926 PyErr_Clear();
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927 else
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928 return NULL;
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929 }
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930 if (PyList_Size(lz->saved) == 0)
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931 return NULL;
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932 it = PyObject_GetIter(lz->saved);
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933 if (it == NULL)
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934 return NULL;
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935 tmp = lz->it;
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936 lz->it = it;
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937 lz->firstpass = 1;
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938 Py_DECREF(tmp);
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939 }
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940 }
61fa6b55c1de User requested changes to the itertools module.
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941
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942 static PyObject *
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943 cycle_reduce(cycleobject *lz)
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944 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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945 /* Create a new cycle with the iterator tuple, then set
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946 * the saved state on it.
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947 */
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948 return Py_BuildValue("O(O)(Oi)", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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949 lz->it, lz->saved, lz->firstpass);
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950 }
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951
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952 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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953 cycle_setstate(cycleobject *lz, PyObject *state)
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954 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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955 PyObject *saved=NULL;
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956 int firstpass;
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957 if (!PyArg_ParseTuple(state, "Oi", &saved, &firstpass))
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958 return NULL;
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959 Py_CLEAR(lz->saved);
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960 lz->saved = saved;
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961 Py_XINCREF(lz->saved);
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962 lz->firstpass = firstpass != 0;
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963 Py_RETURN_NONE;
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964 }
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965
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966 static PyMethodDef cycle_methods[] = {
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967 {"__reduce__", (PyCFunction)cycle_reduce, METH_NOARGS,
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968 reduce_doc},
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969 {"__setstate__", (PyCFunction)cycle_setstate, METH_O,
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970 setstate_doc},
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971 {NULL, NULL} /* sentinel */
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972 };
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973
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974 PyDoc_STRVAR(cycle_doc,
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975 "cycle(iterable) --> cycle object\n\
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976 \n\
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977 Return elements from the iterable until it is exhausted.\n\
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978 Then repeat the sequence indefinitely.");
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979
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980 static PyTypeObject cycle_type = {
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981 PyVarObject_HEAD_INIT(NULL, 0)
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982 "itertools.cycle", /* tp_name */
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983 sizeof(cycleobject), /* tp_basicsize */
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984 0, /* tp_itemsize */
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985 /* methods */
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986 (destructor)cycle_dealloc, /* tp_dealloc */
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987 0, /* tp_print */
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988 0, /* tp_getattr */
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989 0, /* tp_setattr */
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990 0, /* tp_reserved */
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991 0, /* tp_repr */
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992 0, /* tp_as_number */
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993 0, /* tp_as_sequence */
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994 0, /* tp_as_mapping */
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995 0, /* tp_hash */
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996 0, /* tp_call */
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997 0, /* tp_str */
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998 PyObject_GenericGetAttr, /* tp_getattro */
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999 0, /* tp_setattro */
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1000 0, /* tp_as_buffer */
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1001 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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1002 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1003 cycle_doc, /* tp_doc */
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1004 (traverseproc)cycle_traverse, /* tp_traverse */
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1005 0, /* tp_clear */
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1006 0, /* tp_richcompare */
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1007 0, /* tp_weaklistoffset */
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1008 PyObject_SelfIter, /* tp_iter */
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1009 (iternextfunc)cycle_next, /* tp_iternext */
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1010 cycle_methods, /* tp_methods */
61466
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1011 0, /* tp_members */
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1012 0, /* tp_getset */
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1013 0, /* tp_base */
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1014 0, /* tp_dict */
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1015 0, /* tp_descr_get */
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1016 0, /* tp_descr_set */
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1017 0, /* tp_dictoffset */
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1018 0, /* tp_init */
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1019 0, /* tp_alloc */
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1020 cycle_new, /* tp_new */
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1021 PyObject_GC_Del, /* tp_free */
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1022 };
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1023
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1024
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1025 /* dropwhile object **********************************************************/
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1026
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1027 typedef struct {
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1028 PyObject_HEAD
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1029 PyObject *func;
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1030 PyObject *it;
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1031 long start;
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1032 } dropwhileobject;
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1033
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1034 static PyTypeObject dropwhile_type;
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1035
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diff changeset
1036 static PyObject *
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diff changeset
1037 dropwhile_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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diff changeset
1038 {
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1039 PyObject *func, *seq;
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1040 PyObject *it;
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1041 dropwhileobject *lz;
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1042
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1043 if (type == &dropwhile_type && !_PyArg_NoKeywords("dropwhile()", kwds))
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1044 return NULL;
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1045
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1046 if (!PyArg_UnpackTuple(args, "dropwhile", 2, 2, &func, &seq))
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1047 return NULL;
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1048
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diff changeset
1049 /* Get iterator. */
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diff changeset
1050 it = PyObject_GetIter(seq);
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diff changeset
1051 if (it == NULL)
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1052 return NULL;
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diff changeset
1053
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diff changeset
1054 /* create dropwhileobject structure */
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1055 lz = (dropwhileobject *)type->tp_alloc(type, 0);
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1056 if (lz == NULL) {
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1057 Py_DECREF(it);
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1058 return NULL;
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1059 }
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1060 Py_INCREF(func);
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1061 lz->func = func;
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1062 lz->it = it;
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1063 lz->start = 0;
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1064
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1065 return (PyObject *)lz;
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1066 }
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1067
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1068 static void
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1069 dropwhile_dealloc(dropwhileobject *lz)
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1070 {
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1071 PyObject_GC_UnTrack(lz);
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1072 Py_XDECREF(lz->func);
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1073 Py_XDECREF(lz->it);
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1074 Py_TYPE(lz)->tp_free(lz);
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1075 }
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1076
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1077 static int
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1078 dropwhile_traverse(dropwhileobject *lz, visitproc visit, void *arg)
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1079 {
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1080 Py_VISIT(lz->it);
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1081 Py_VISIT(lz->func);
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1082 return 0;
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1083 }
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1084
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1085 static PyObject *
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1086 dropwhile_next(dropwhileobject *lz)
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1087 {
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1088 PyObject *item, *good;
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1089 PyObject *it = lz->it;
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1090 long ok;
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1091 PyObject *(*iternext)(PyObject *);
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1092
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1093 iternext = *Py_TYPE(it)->tp_iternext;
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1094 for (;;) {
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1095 item = iternext(it);
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1096 if (item == NULL)
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1097 return NULL;
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1098 if (lz->start == 1)
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1099 return item;
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1100
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1101 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
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1102 if (good == NULL) {
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1103 Py_DECREF(item);
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1104 return NULL;
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1105 }
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1106 ok = PyObject_IsTrue(good);
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1107 Py_DECREF(good);
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1108 if (ok == 0) {
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1109 lz->start = 1;
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1110 return item;
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1111 }
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1112 Py_DECREF(item);
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1113 if (ok < 0)
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1114 return NULL;
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1115 }
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1116 }
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1117
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1118 static PyObject *
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1119 dropwhile_reduce(dropwhileobject *lz)
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1120 {
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1121 return Py_BuildValue("O(OO)l", Py_TYPE(lz),
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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1122 lz->func, lz->it, lz->start);
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1123 }
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1124
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diff changeset
1125 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1126 dropwhile_setstate(dropwhileobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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1127 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1128 int start = PyObject_IsTrue(state);
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1129 if (start < 0)
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1130 return NULL;
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1131 lz->start = start;
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1132 Py_RETURN_NONE;
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1133 }
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diff changeset
1134
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1135 static PyMethodDef dropwhile_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1136 {"__reduce__", (PyCFunction)dropwhile_reduce, METH_NOARGS,
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diff changeset
1137 reduce_doc},
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diff changeset
1138 {"__setstate__", (PyCFunction)dropwhile_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1139 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1140 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1141 };
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diff changeset
1142
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1143 PyDoc_STRVAR(dropwhile_doc,
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diff changeset
1144 "dropwhile(predicate, iterable) --> dropwhile object\n\
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1145 \n\
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1146 Drop items from the iterable while predicate(item) is true.\n\
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1147 Afterwards, return every element until the iterable is exhausted.");
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diff changeset
1148
29850
45dc33433323 SF patch #770521: make itertools type declarations static
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diff changeset
1149 static PyTypeObject dropwhile_type = {
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1150 PyVarObject_HEAD_INIT(NULL, 0)
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1151 "itertools.dropwhile", /* tp_name */
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1152 sizeof(dropwhileobject), /* tp_basicsize */
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diff changeset
1153 0, /* tp_itemsize */
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1154 /* methods */
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1155 (destructor)dropwhile_dealloc, /* tp_dealloc */
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1156 0, /* tp_print */
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1157 0, /* tp_getattr */
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1158 0, /* tp_setattr */
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1159 0, /* tp_reserved */
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1160 0, /* tp_repr */
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1161 0, /* tp_as_number */
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1162 0, /* tp_as_sequence */
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1163 0, /* tp_as_mapping */
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1164 0, /* tp_hash */
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1165 0, /* tp_call */
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1166 0, /* tp_str */
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1167 PyObject_GenericGetAttr, /* tp_getattro */
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1168 0, /* tp_setattro */
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1169 0, /* tp_as_buffer */
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1170 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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1171 Py_TPFLAGS_BASETYPE, /* tp_flags */
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1172 dropwhile_doc, /* tp_doc */
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1173 (traverseproc)dropwhile_traverse, /* tp_traverse */
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1174 0, /* tp_clear */
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1175 0, /* tp_richcompare */
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1176 0, /* tp_weaklistoffset */
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diff changeset
1177 PyObject_SelfIter, /* tp_iter */
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diff changeset
1178 (iternextfunc)dropwhile_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1179 dropwhile_methods, /* tp_methods */
61466
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diff changeset
1180 0, /* tp_members */
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diff changeset
1181 0, /* tp_getset */
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diff changeset
1182 0, /* tp_base */
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1183 0, /* tp_dict */
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diff changeset
1184 0, /* tp_descr_get */
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1185 0, /* tp_descr_set */
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diff changeset
1186 0, /* tp_dictoffset */
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diff changeset
1187 0, /* tp_init */
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diff changeset
1188 0, /* tp_alloc */
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diff changeset
1189 dropwhile_new, /* tp_new */
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diff changeset
1190 PyObject_GC_Del, /* tp_free */
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diff changeset
1191 };
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diff changeset
1192
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diff changeset
1193
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1194 /* takewhile object **********************************************************/
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1195
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1196 typedef struct {
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1197 PyObject_HEAD
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1198 PyObject *func;
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1199 PyObject *it;
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1200 long stop;
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1201 } takewhileobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1202
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1203 static PyTypeObject takewhile_type;
27570
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diff changeset
1204
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1205 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1206 takewhile_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1207 {
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1208 PyObject *func, *seq;
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diff changeset
1209 PyObject *it;
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diff changeset
1210 takewhileobject *lz;
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diff changeset
1211
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1212 if (type == &takewhile_type && !_PyArg_NoKeywords("takewhile()", kwds))
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1213 return NULL;
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1214
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1215 if (!PyArg_UnpackTuple(args, "takewhile", 2, 2, &func, &seq))
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diff changeset
1216 return NULL;
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diff changeset
1217
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diff changeset
1218 /* Get iterator. */
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diff changeset
1219 it = PyObject_GetIter(seq);
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diff changeset
1220 if (it == NULL)
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1221 return NULL;
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1222
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1223 /* create takewhileobject structure */
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1224 lz = (takewhileobject *)type->tp_alloc(type, 0);
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1225 if (lz == NULL) {
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1226 Py_DECREF(it);
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1227 return NULL;
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1228 }
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1229 Py_INCREF(func);
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diff changeset
1230 lz->func = func;
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diff changeset
1231 lz->it = it;
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1232 lz->stop = 0;
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1233
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1234 return (PyObject *)lz;
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1235 }
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1236
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1237 static void
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1238 takewhile_dealloc(takewhileobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1239 {
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1240 PyObject_GC_UnTrack(lz);
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diff changeset
1241 Py_XDECREF(lz->func);
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1242 Py_XDECREF(lz->it);
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1243 Py_TYPE(lz)->tp_free(lz);
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1244 }
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1245
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1246 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1247 takewhile_traverse(takewhileobject *lz, visitproc visit, void *arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1248 {
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1249 Py_VISIT(lz->it);
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1250 Py_VISIT(lz->func);
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1251 return 0;
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1252 }
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1253
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1254 static PyObject *
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1255 takewhile_next(takewhileobject *lz)
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Raymond Hettinger <python@rcn.com>
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1256 {
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1257 PyObject *item, *good;
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diff changeset
1258 PyObject *it = lz->it;
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diff changeset
1259 long ok;
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diff changeset
1260
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1261 if (lz->stop == 1)
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1262 return NULL;
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1263
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1264 item = (*Py_TYPE(it)->tp_iternext)(it);
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1265 if (item == NULL)
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1266 return NULL;
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1267
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diff changeset
1268 good = PyObject_CallFunctionObjArgs(lz->func, item, NULL);
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diff changeset
1269 if (good == NULL) {
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1270 Py_DECREF(item);
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diff changeset
1271 return NULL;
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1272 }
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1273 ok = PyObject_IsTrue(good);
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diff changeset
1274 Py_DECREF(good);
78605
b878df1d23b1 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
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diff changeset
1275 if (ok == 1)
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1276 return item;
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1277 Py_DECREF(item);
78604
56dc7b09f390 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72459
diff changeset
1278 if (ok == 0)
56dc7b09f390 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
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diff changeset
1279 lz->stop = 1;
61466
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1280 return NULL;
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1281 }
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1282
76091
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1283 static PyObject *
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1284 takewhile_reduce(takewhileobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1285 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1286 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
1287 lz->func, lz->it, lz->stop);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1288 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1289
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1290 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1291 takewhile_reduce_setstate(takewhileobject *lz, PyObject *state)
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1292 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1293 int stop = PyObject_IsTrue(state);
78605
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diff changeset
1294 if (stop < 0)
76091
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1295 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1296 lz->stop = stop;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1297 Py_RETURN_NONE;
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diff changeset
1298 }
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1299
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1300 static PyMethodDef takewhile_reduce_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1301 {"__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
1302 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1303 {"__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
1304 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1305 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1306 };
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diff changeset
1307 PyDoc_STRVAR(takewhile_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1308 "takewhile(predicate, iterable) --> takewhile object\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1309 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1310 Return successive entries from an iterable as long as the \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1311 predicate evaluates to true for each entry.");
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1312
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1313 static PyTypeObject takewhile_type = {
61466
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diff changeset
1314 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
1315 "itertools.takewhile", /* tp_name */
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diff changeset
1316 sizeof(takewhileobject), /* tp_basicsize */
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diff changeset
1317 0, /* tp_itemsize */
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diff changeset
1318 /* methods */
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diff changeset
1319 (destructor)takewhile_dealloc, /* tp_dealloc */
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diff changeset
1320 0, /* tp_print */
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1321 0, /* tp_getattr */
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1322 0, /* tp_setattr */
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1323 0, /* tp_reserved */
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diff changeset
1324 0, /* tp_repr */
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1325 0, /* tp_as_number */
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1326 0, /* tp_as_sequence */
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diff changeset
1327 0, /* tp_as_mapping */
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1328 0, /* tp_hash */
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1329 0, /* tp_call */
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1330 0, /* tp_str */
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diff changeset
1331 PyObject_GenericGetAttr, /* tp_getattro */
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1332 0, /* tp_setattro */
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1333 0, /* tp_as_buffer */
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1334 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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1335 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1336 takewhile_doc, /* tp_doc */
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diff changeset
1337 (traverseproc)takewhile_traverse, /* tp_traverse */
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1338 0, /* tp_clear */
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1339 0, /* tp_richcompare */
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1340 0, /* tp_weaklistoffset */
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diff changeset
1341 PyObject_SelfIter, /* tp_iter */
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diff changeset
1342 (iternextfunc)takewhile_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1343 takewhile_reduce_methods, /* tp_methods */
61466
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diff changeset
1344 0, /* tp_members */
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1345 0, /* tp_getset */
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1346 0, /* tp_base */
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1347 0, /* tp_dict */
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1348 0, /* tp_descr_get */
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1349 0, /* tp_descr_set */
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1350 0, /* tp_dictoffset */
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1351 0, /* tp_init */
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1352 0, /* tp_alloc */
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1353 takewhile_new, /* tp_new */
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diff changeset
1354 PyObject_GC_Del, /* tp_free */
27570
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diff changeset
1355 };
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diff changeset
1356
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1357
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1358 /* islice object ************************************************************/
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diff changeset
1359
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1360 typedef struct {
61466
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1361 PyObject_HEAD
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1362 PyObject *it;
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1363 Py_ssize_t next;
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1364 Py_ssize_t stop;
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1365 Py_ssize_t step;
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1366 Py_ssize_t cnt;
27570
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diff changeset
1367 } isliceobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1368
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1369 static PyTypeObject islice_type;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1370
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diff changeset
1371 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1372 islice_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1373 {
61466
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1374 PyObject *seq;
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1375 Py_ssize_t start=0, stop=-1, step=1;
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1376 PyObject *it, *a1=NULL, *a2=NULL, *a3=NULL;
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1377 Py_ssize_t numargs;
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1378 isliceobject *lz;
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1379
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1380 if (type == &islice_type && !_PyArg_NoKeywords("islice()", kwds))
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1381 return NULL;
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diff changeset
1382
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1383 if (!PyArg_UnpackTuple(args, "islice", 2, 4, &seq, &a1, &a2, &a3))
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1384 return NULL;
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diff changeset
1385
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1386 numargs = PyTuple_Size(args);
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1387 if (numargs == 2) {
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1388 if (a1 != Py_None) {
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1389 stop = PyLong_AsSsize_t(a1);
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1390 if (stop == -1) {
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1391 if (PyErr_Occurred())
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1392 PyErr_Clear();
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diff changeset
1393 PyErr_SetString(PyExc_ValueError,
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diff changeset
1394 "Stop argument for islice() must be None or an integer: 0 <= x <= sys.maxsize.");
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1395 return NULL;
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1396 }
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1397 }
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1398 } else {
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1399 if (a1 != Py_None)
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1400 start = PyLong_AsSsize_t(a1);
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1401 if (start == -1 && PyErr_Occurred())
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1402 PyErr_Clear();
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1403 if (a2 != Py_None) {
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1404 stop = PyLong_AsSsize_t(a2);
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1405 if (stop == -1) {
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1406 if (PyErr_Occurred())
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1407 PyErr_Clear();
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1408 PyErr_SetString(PyExc_ValueError,
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1409 "Stop argument for islice() must be None or an integer: 0 <= x <= sys.maxsize.");
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1410 return NULL;
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1411 }
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1412 }
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1413 }
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1414 if (start<0 || stop<-1) {
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1415 PyErr_SetString(PyExc_ValueError,
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1416 "Indices for islice() must be None or an integer: 0 <= x <= sys.maxsize.");
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1417 return NULL;
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1418 }
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1419
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1420 if (a3 != NULL) {
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1421 if (a3 != Py_None)
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1422 step = PyLong_AsSsize_t(a3);
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1423 if (step == -1 && PyErr_Occurred())
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1424 PyErr_Clear();
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1425 }
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1426 if (step<1) {
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1427 PyErr_SetString(PyExc_ValueError,
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1428 "Step for islice() must be a positive integer or None.");
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1429 return NULL;
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1430 }
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1431
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diff changeset
1432 /* Get iterator. */
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1433 it = PyObject_GetIter(seq);
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1434 if (it == NULL)
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1435 return NULL;
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1436
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diff changeset
1437 /* create isliceobject structure */
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diff changeset
1438 lz = (isliceobject *)type->tp_alloc(type, 0);
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diff changeset
1439 if (lz == NULL) {
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diff changeset
1440 Py_DECREF(it);
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diff changeset
1441 return NULL;
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diff changeset
1442 }
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diff changeset
1443 lz->it = it;
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diff changeset
1444 lz->next = start;
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diff changeset
1445 lz->stop = stop;
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diff changeset
1446 lz->step = step;
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diff changeset
1447 lz->cnt = 0L;
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diff changeset
1448
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diff changeset
1449 return (PyObject *)lz;
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parents:
diff changeset
1450 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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parents:
diff changeset
1451
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1452 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1453 islice_dealloc(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1454 {
61466
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diff changeset
1455 PyObject_GC_UnTrack(lz);
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diff changeset
1456 Py_XDECREF(lz->it);
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diff changeset
1457 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
1458 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1459
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1460 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1461 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
1462 {
61466
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1463 Py_VISIT(lz->it);
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1464 return 0;
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ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1465 }
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Raymond Hettinger <python@rcn.com>
parents:
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1466
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1467 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1468 islice_next(isliceobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1469 {
61466
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1470 PyObject *item;
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diff changeset
1471 PyObject *it = lz->it;
66546
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1472 Py_ssize_t stop = lz->stop;
61466
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diff changeset
1473 Py_ssize_t oldnext;
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diff changeset
1474 PyObject *(*iternext)(PyObject *);
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diff changeset
1475
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diff changeset
1476 iternext = *Py_TYPE(it)->tp_iternext;
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diff changeset
1477 while (lz->cnt < lz->next) {
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diff changeset
1478 item = iternext(it);
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diff changeset
1479 if (item == NULL)
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diff changeset
1480 return NULL;
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diff changeset
1481 Py_DECREF(item);
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diff changeset
1482 lz->cnt++;
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diff changeset
1483 }
66546
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1484 if (stop != -1 && lz->cnt >= stop)
61466
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diff changeset
1485 return NULL;
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diff changeset
1486 item = iternext(it);
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diff changeset
1487 if (item == NULL)
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1488 return NULL;
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1489 lz->cnt++;
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diff changeset
1490 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
1491 /* 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
1492 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
1493 lz->next += (size_t)lz->step;
66546
6799d54db378 Issue #10323: Predictable final state for slice().
Raymond Hettinger <python@rcn.com>
parents: 62239
diff changeset
1494 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
1495 lz->next = stop;
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diff changeset
1496 return item;
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diff changeset
1497 }
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Raymond Hettinger <python@rcn.com>
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diff changeset
1498
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1499 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1500 islice_reduce(isliceobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1501 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1502 /* 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
1503 * 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
1504 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1505 PyObject *stop;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1506 if (lz->stop == -1) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1507 stop = Py_None;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1508 Py_INCREF(stop);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1509 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1510 stop = PyLong_FromSsize_t(lz->stop);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1511 if (stop == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1512 return NULL;
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 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
1515 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
1516 lz->cnt);
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1519 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1520 islice_setstate(isliceobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1521 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1522 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
1523 if (cnt == -1 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1524 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1525 lz->cnt = cnt;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1526 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1527 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1528
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1529 static PyMethodDef islice_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1530 {"__reduce__", (PyCFunction)islice_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1531 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1532 {"__setstate__", (PyCFunction)islice_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1533 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1534 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1535 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1536
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1537 PyDoc_STRVAR(islice_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1538 "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
1539 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1540 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>
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diff changeset
1541 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
1542 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
1543 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
1544 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
1545 but returns an iterator.");
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1546
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1547 static PyTypeObject islice_type = {
61466
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1548 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
1549 "itertools.islice", /* tp_name */
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diff changeset
1550 sizeof(isliceobject), /* tp_basicsize */
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diff changeset
1551 0, /* tp_itemsize */
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diff changeset
1552 /* methods */
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diff changeset
1553 (destructor)islice_dealloc, /* tp_dealloc */
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diff changeset
1554 0, /* tp_print */
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diff changeset
1555 0, /* tp_getattr */
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diff changeset
1556 0, /* tp_setattr */
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1557 0, /* tp_reserved */
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1558 0, /* tp_repr */
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diff changeset
1559 0, /* tp_as_number */
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1560 0, /* tp_as_sequence */
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diff changeset
1561 0, /* tp_as_mapping */
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1562 0, /* tp_hash */
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1563 0, /* tp_call */
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1564 0, /* tp_str */
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1565 PyObject_GenericGetAttr, /* tp_getattro */
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1566 0, /* tp_setattro */
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diff changeset
1567 0, /* tp_as_buffer */
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1568 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
1569 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1570 islice_doc, /* tp_doc */
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diff changeset
1571 (traverseproc)islice_traverse, /* tp_traverse */
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diff changeset
1572 0, /* tp_clear */
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diff changeset
1573 0, /* tp_richcompare */
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diff changeset
1574 0, /* tp_weaklistoffset */
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diff changeset
1575 PyObject_SelfIter, /* tp_iter */
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diff changeset
1576 (iternextfunc)islice_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1577 islice_methods, /* tp_methods */
61466
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diff changeset
1578 0, /* tp_members */
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diff changeset
1579 0, /* tp_getset */
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1580 0, /* tp_base */
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1581 0, /* tp_dict */
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1582 0, /* tp_descr_get */
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1583 0, /* tp_descr_set */
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1584 0, /* tp_dictoffset */
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1585 0, /* tp_init */
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1586 0, /* tp_alloc */
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diff changeset
1587 islice_new, /* tp_new */
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1588 PyObject_GC_Del, /* tp_free */
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diff changeset
1589 };
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1590
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1591
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1592 /* starmap object ************************************************************/
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1593
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1594 typedef struct {
61466
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1595 PyObject_HEAD
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1596 PyObject *func;
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1597 PyObject *it;
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1598 } starmapobject;
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1599
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45dc33433323 SF patch #770521: make itertools type declarations static
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1600 static PyTypeObject starmap_type;
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1601
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1602 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1603 starmap_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1604 {
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1605 PyObject *func, *seq;
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1606 PyObject *it;
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1607 starmapobject *lz;
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1608
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1609 if (type == &starmap_type && !_PyArg_NoKeywords("starmap()", kwds))
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1610 return NULL;
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1611
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1612 if (!PyArg_UnpackTuple(args, "starmap", 2, 2, &func, &seq))
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1613 return NULL;
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1614
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1615 /* Get iterator. */
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1616 it = PyObject_GetIter(seq);
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1617 if (it == NULL)
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1618 return NULL;
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1619
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1620 /* create starmapobject structure */
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1621 lz = (starmapobject *)type->tp_alloc(type, 0);
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1622 if (lz == NULL) {
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1623 Py_DECREF(it);
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1624 return NULL;
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1625 }
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1626 Py_INCREF(func);
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1627 lz->func = func;
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1628 lz->it = it;
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1629
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1630 return (PyObject *)lz;
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1631 }
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1632
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1633 static void
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1634 starmap_dealloc(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1635 {
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1636 PyObject_GC_UnTrack(lz);
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1637 Py_XDECREF(lz->func);
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1638 Py_XDECREF(lz->it);
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1639 Py_TYPE(lz)->tp_free(lz);
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1640 }
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1641
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diff changeset
1642 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1643 starmap_traverse(starmapobject *lz, visitproc visit, void *arg)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1644 {
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1645 Py_VISIT(lz->it);
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diff changeset
1646 Py_VISIT(lz->func);
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diff changeset
1647 return 0;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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parents:
diff changeset
1648 }
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parents:
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1649
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1650 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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1651 starmap_next(starmapobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
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diff changeset
1652 {
61466
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1653 PyObject *args;
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1654 PyObject *result;
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1655 PyObject *it = lz->it;
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1656
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1657 args = (*Py_TYPE(it)->tp_iternext)(it);
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1658 if (args == NULL)
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1659 return NULL;
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diff changeset
1660 if (!PyTuple_CheckExact(args)) {
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1661 PyObject *newargs = PySequence_Tuple(args);
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diff changeset
1662 Py_DECREF(args);
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diff changeset
1663 if (newargs == NULL)
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1664 return NULL;
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1665 args = newargs;
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1666 }
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1667 result = PyObject_Call(lz->func, args, NULL);
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1668 Py_DECREF(args);
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1669 return result;
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1670 }
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1671
76091
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1672 static PyObject *
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diff changeset
1673 starmap_reduce(starmapobject *lz)
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diff changeset
1674 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1675 /* Just pickle the iterator */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1676 return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->func, lz->it);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1677 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1678
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
1679 static PyMethodDef starmap_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1680 {"__reduce__", (PyCFunction)starmap_reduce, METH_NOARGS,
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1681 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1682 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
1683 };
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1684
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1685 PyDoc_STRVAR(starmap_doc,
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diff changeset
1686 "starmap(function, sequence) --> starmap object\n\
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1687 \n\
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1688 Return an iterator whose values are returned from the function evaluated\n\
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1689 with a argument tuple taken from the given sequence.");
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1690
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45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
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1691 static PyTypeObject starmap_type = {
61466
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1692 PyVarObject_HEAD_INIT(NULL, 0)
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1693 "itertools.starmap", /* tp_name */
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1694 sizeof(starmapobject), /* tp_basicsize */
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1695 0, /* tp_itemsize */
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diff changeset
1696 /* methods */
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diff changeset
1697 (destructor)starmap_dealloc, /* tp_dealloc */
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diff changeset
1698 0, /* tp_print */
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diff changeset
1699 0, /* tp_getattr */
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diff changeset
1700 0, /* tp_setattr */
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diff changeset
1701 0, /* tp_reserved */
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diff changeset
1702 0, /* tp_repr */
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diff changeset
1703 0, /* tp_as_number */
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diff changeset
1704 0, /* tp_as_sequence */
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diff changeset
1705 0, /* tp_as_mapping */
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diff changeset
1706 0, /* tp_hash */
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diff changeset
1707 0, /* tp_call */
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diff changeset
1708 0, /* tp_str */
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diff changeset
1709 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
1710 0, /* tp_setattro */
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diff changeset
1711 0, /* tp_as_buffer */
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diff changeset
1712 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
1713 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1714 starmap_doc, /* tp_doc */
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diff changeset
1715 (traverseproc)starmap_traverse, /* tp_traverse */
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diff changeset
1716 0, /* tp_clear */
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1717 0, /* tp_richcompare */
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diff changeset
1718 0, /* tp_weaklistoffset */
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diff changeset
1719 PyObject_SelfIter, /* tp_iter */
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diff changeset
1720 (iternextfunc)starmap_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1721 starmap_methods, /* tp_methods */
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diff changeset
1722 0, /* tp_members */
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1723 0, /* tp_getset */
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1724 0, /* tp_base */
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1725 0, /* tp_dict */
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diff changeset
1726 0, /* tp_descr_get */
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diff changeset
1727 0, /* tp_descr_set */
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1728 0, /* tp_dictoffset */
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1729 0, /* tp_init */
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diff changeset
1730 0, /* tp_alloc */
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diff changeset
1731 starmap_new, /* tp_new */
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diff changeset
1732 PyObject_GC_Del, /* tp_free */
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
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1735
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1736 /* chain object ************************************************************/
27570
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1737
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1738 typedef struct {
61466
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1739 PyObject_HEAD
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1740 PyObject *source; /* Iterator over input iterables */
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diff changeset
1741 PyObject *active; /* Currently running input iterator */
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1742 } chainobject;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1743
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
1744 static PyTypeObject chain_type;
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1745
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1746 static PyObject *
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diff changeset
1747 chain_new_internal(PyTypeObject *type, PyObject *source)
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1748 {
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1749 chainobject *lz;
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1750
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1751 lz = (chainobject *)type->tp_alloc(type, 0);
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1752 if (lz == NULL) {
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1753 Py_DECREF(source);
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1754 return NULL;
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1755 }
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1756
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1757 lz->source = source;
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1758 lz->active = NULL;
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1759 return (PyObject *)lz;
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1760 }
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1761
27570
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Raymond Hettinger <python@rcn.com>
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diff changeset
1762 static PyObject *
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1763 chain_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
27570
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Raymond Hettinger <python@rcn.com>
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diff changeset
1764 {
61466
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1765 PyObject *source;
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1766
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1767 if (type == &chain_type && !_PyArg_NoKeywords("chain()", kwds))
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diff changeset
1768 return NULL;
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1769
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1770 source = PyObject_GetIter(args);
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1771 if (source == NULL)
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1772 return NULL;
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diff changeset
1773
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1774 return chain_new_internal(type, source);
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1775 }
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1776
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
1777 static PyObject *
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1778 chain_new_from_iterable(PyTypeObject *type, PyObject *arg)
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1779 {
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1780 PyObject *source;
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1781
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1782 source = PyObject_GetIter(arg);
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1783 if (source == NULL)
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1784 return NULL;
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1785
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1786 return chain_new_internal(type, source);
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1787 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1788
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
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diff changeset
1789 static void
28024
61fa6b55c1de User requested changes to the itertools module.
Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1790 chain_dealloc(chainobject *lz)
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1791 {
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1792 PyObject_GC_UnTrack(lz);
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diff changeset
1793 Py_XDECREF(lz->active);
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diff changeset
1794 Py_XDECREF(lz->source);
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diff changeset
1795 Py_TYPE(lz)->tp_free(lz);
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Raymond Hettinger <python@rcn.com>
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diff changeset
1796 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1797
27747
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Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1798 static int
28024
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Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1799 chain_traverse(chainobject *lz, visitproc visit, void *arg)
27747
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Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1800 {
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1801 Py_VISIT(lz->source);
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1802 Py_VISIT(lz->active);
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1803 return 0;
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Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1804 }
941de791b17a SF bug #681003: itertools issues
Raymond Hettinger <python@rcn.com>
parents: 27570
diff changeset
1805
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1806 static PyObject *
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Raymond Hettinger <python@rcn.com>
parents: 27770
diff changeset
1807 chain_next(chainobject *lz)
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1808 {
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1809 PyObject *item;
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1810
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1811 if (lz->source == NULL)
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1812 return NULL; /* already stopped */
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1813
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1814 if (lz->active == NULL) {
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1815 PyObject *iterable = PyIter_Next(lz->source);
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1816 if (iterable == NULL) {
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1817 Py_CLEAR(lz->source);
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1818 return NULL; /* no more input sources */
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1819 }
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1820 lz->active = PyObject_GetIter(iterable);
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diff changeset
1821 Py_DECREF(iterable);
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1822 if (lz->active == NULL) {
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1823 Py_CLEAR(lz->source);
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1824 return NULL; /* input not iterable */
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1825 }
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1826 }
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1827 item = PyIter_Next(lz->active);
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diff changeset
1828 if (item != NULL)
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1829 return item;
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diff changeset
1830 if (PyErr_Occurred()) {
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1831 if (PyErr_ExceptionMatches(PyExc_StopIteration))
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1832 PyErr_Clear();
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1833 else
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1834 return NULL; /* input raised an exception */
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1835 }
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1836 Py_CLEAR(lz->active);
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1837 return chain_next(lz); /* recurse and use next active */
27570
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Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1838 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
1839
76091
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
1840 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1841 chain_reduce(chainobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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1842 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1843 if (lz->source) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1844 /* 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
1845 * 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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1846 * 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
1847 */
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
1848 if (lz->active) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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1849 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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1850 } else {
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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1851 return Py_BuildValue("O()(O)", Py_TYPE(lz), lz->source);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1852 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1853 } else {
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1854 return Py_BuildValue("O()", Py_TYPE(lz)); /* exhausted */
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1855 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1856 return NULL;
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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1857 }
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1858
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diff changeset
1859 static PyObject *
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Kristján Valur Jónsson <kristjan@ccpgames.com>
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1860 chain_setstate(chainobject *lz, PyObject *state)
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1861 {
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1862 PyObject *source, *active=NULL;
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1863 if (! PyArg_ParseTuple(state, "O|O", &source, &active))
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1864 return NULL;
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1865
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1866 Py_CLEAR(lz->source);
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diff changeset
1867 lz->source = source;
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1868 Py_INCREF(lz->source);
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diff changeset
1869 Py_CLEAR(lz->active);
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diff changeset
1870 lz->active = active;
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diff changeset
1871 Py_XINCREF(lz->active);
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diff changeset
1872 Py_RETURN_NONE;
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1873 }
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1874
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1875 PyDoc_STRVAR(chain_doc,
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1876 "chain(*iterables) --> chain object\n\
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diff changeset
1877 \n\
41501
0c5019afc55b PEP 3114: rename .next() to .__next__() and add next() builtin.
Georg Brandl <georg@python.org>
parents: 40893
diff changeset
1878 Return a chain object whose .__next__() method returns elements from the\n\
28024
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Raymond Hettinger <python@rcn.com>
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diff changeset
1879 first iterable until it is exhausted, then elements from the next\n\
61fa6b55c1de User requested changes to the itertools module.
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diff changeset
1880 iterable, until all of the iterables are exhausted.");
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1881
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1882 PyDoc_STRVAR(chain_from_iterable_doc,
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1883 "chain.from_iterable(iterable) --> chain object\n\
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1884 \n\
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1885 Alternate chain() contructor taking a single iterable argument\n\
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1886 that evaluates lazily.");
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1887
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1888 static PyMethodDef chain_methods[] = {
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1889 {"from_iterable", (PyCFunction) chain_new_from_iterable, METH_O | METH_CLASS,
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1890 chain_from_iterable_doc},
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1891 {"__reduce__", (PyCFunction)chain_reduce, METH_NOARGS,
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1892 reduce_doc},
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diff changeset
1893 {"__setstate__", (PyCFunction)chain_setstate, METH_O,
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1894 setstate_doc},
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1895 {NULL, NULL} /* sentinel */
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1896 };
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1897
29850
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diff changeset
1898 static PyTypeObject chain_type = {
61466
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1899 PyVarObject_HEAD_INIT(NULL, 0)
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1900 "itertools.chain", /* tp_name */
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diff changeset
1901 sizeof(chainobject), /* tp_basicsize */
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diff changeset
1902 0, /* tp_itemsize */
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1903 /* methods */
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1904 (destructor)chain_dealloc, /* tp_dealloc */
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1905 0, /* tp_print */
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1906 0, /* tp_getattr */
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1907 0, /* tp_setattr */
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1908 0, /* tp_reserved */
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diff changeset
1909 0, /* tp_repr */
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1910 0, /* tp_as_number */
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1911 0, /* tp_as_sequence */
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1912 0, /* tp_as_mapping */
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1913 0, /* tp_hash */
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1914 0, /* tp_call */
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1915 0, /* tp_str */
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1916 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
1917 0, /* tp_setattro */
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1918 0, /* tp_as_buffer */
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diff changeset
1919 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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1920 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
1921 chain_doc, /* tp_doc */
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diff changeset
1922 (traverseproc)chain_traverse, /* tp_traverse */
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1923 0, /* tp_clear */
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1924 0, /* tp_richcompare */
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1925 0, /* tp_weaklistoffset */
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1926 PyObject_SelfIter, /* tp_iter */
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diff changeset
1927 (iternextfunc)chain_next, /* tp_iternext */
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diff changeset
1928 chain_methods, /* tp_methods */
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1929 0, /* tp_members */
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1930 0, /* tp_getset */
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1931 0, /* tp_base */
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1932 0, /* tp_dict */
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1933 0, /* tp_descr_get */
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1934 0, /* tp_descr_set */
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1935 0, /* tp_dictoffset */
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1936 0, /* tp_init */
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1937 0, /* tp_alloc */
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1938 chain_new, /* tp_new */
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1939 PyObject_GC_Del, /* tp_free */
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1940 };
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1941
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1942
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1943 /* product object ************************************************************/
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1944
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1945 typedef struct {
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1946 PyObject_HEAD
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1947 PyObject *pools; /* tuple of pool tuples */
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1948 Py_ssize_t *indices; /* one index per pool */
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1949 PyObject *result; /* most recently returned result tuple */
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1950 int stopped; /* set to 1 when the product iterator is exhausted */
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1951 } productobject;
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1952
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1953 static PyTypeObject product_type;
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1954
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1955 static PyObject *
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1956 product_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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1957 {
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1958 productobject *lz;
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1959 Py_ssize_t nargs, npools, repeat=1;
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1960 PyObject *pools = NULL;
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1961 Py_ssize_t *indices = NULL;
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1962 Py_ssize_t i;
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1963
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1964 if (kwds != NULL) {
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1965 char *kwlist[] = {"repeat", 0};
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1966 PyObject *tmpargs = PyTuple_New(0);
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1967 if (tmpargs == NULL)
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1968 return NULL;
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1969 if (!PyArg_ParseTupleAndKeywords(tmpargs, kwds, "|n:product", kwlist, &repeat)) {
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1970 Py_DECREF(tmpargs);
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1971 return NULL;
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1972 }
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1973 Py_DECREF(tmpargs);
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1974 if (repeat < 0) {
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1975 PyErr_SetString(PyExc_ValueError,
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1976 "repeat argument cannot be negative");
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1977 return NULL;
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1978 }
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1979 }
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1980
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1981 assert(PyTuple_Check(args));
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1982 nargs = (repeat == 0) ? 0 : PyTuple_GET_SIZE(args);
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1983 npools = nargs * repeat;
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1984
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1985 indices = PyMem_Malloc(npools * sizeof(Py_ssize_t));
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1986 if (indices == NULL) {
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1987 PyErr_NoMemory();
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1988 goto error;
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1989 }
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1990
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1991 pools = PyTuple_New(npools);
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1992 if (pools == NULL)
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1993 goto error;
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1994
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1995 for (i=0; i < nargs ; ++i) {
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1996 PyObject *item = PyTuple_GET_ITEM(args, i);
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1997 PyObject *pool = PySequence_Tuple(item);
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diff changeset
1998 if (pool == NULL)
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diff changeset
1999 goto error;
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2000 PyTuple_SET_ITEM(pools, i, pool);
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2001 indices[i] = 0;
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2002 }
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2003 for ( ; i < npools; ++i) {
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2004 PyObject *pool = PyTuple_GET_ITEM(pools, i - nargs);
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2005 Py_INCREF(pool);
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2006 PyTuple_SET_ITEM(pools, i, pool);
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diff changeset
2007 indices[i] = 0;
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2008 }
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2009
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2010 /* create productobject structure */
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diff changeset
2011 lz = (productobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2012 if (lz == NULL)
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2013 goto error;
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2014
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2015 lz->pools = pools;
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2016 lz->indices = indices;
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2017 lz->result = NULL;
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2018 lz->stopped = 0;
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2019
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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2020 return (PyObject *)lz;
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2021
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
2022 error:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2023 if (indices != NULL)
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
2024 PyMem_Free(indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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2025 Py_XDECREF(pools);
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diff changeset
2026 return NULL;
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2027 }
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2028
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
2029 static void
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2030 product_dealloc(productobject *lz)
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2031 {
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diff changeset
2032 PyObject_GC_UnTrack(lz);
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diff changeset
2033 Py_XDECREF(lz->pools);
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diff changeset
2034 Py_XDECREF(lz->result);
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parents: 57525
diff changeset
2035 if (lz->indices != NULL)
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parents: 57525
diff changeset
2036 PyMem_Free(lz->indices);
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diff changeset
2037 Py_TYPE(lz)->tp_free(lz);
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2038 }
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2039
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
2040 static int
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2041 product_traverse(productobject *lz, visitproc visit, void *arg)
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2042 {
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diff changeset
2043 Py_VISIT(lz->pools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2044 Py_VISIT(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2045 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
2046 }
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
2047
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
2048 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
2049 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
2050 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2051 PyObject *pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2052 PyObject *elem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2053 PyObject *oldelem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2054 PyObject *pools = lz->pools;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2055 PyObject *result = lz->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2056 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
2057 Py_ssize_t i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2058
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2059 if (lz->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2060 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2061
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 /* 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
2064 first element from each pool. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2065 result = PyTuple_New(npools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2066 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2067 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2068 lz->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2069 for (i=0; i < npools; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2070 pool = PyTuple_GET_ITEM(pools, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2071 if (PyTuple_GET_SIZE(pool) == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2072 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2073 elem = PyTuple_GET_ITEM(pool, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2074 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2075 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2076 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2077 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2078 Py_ssize_t *indices = lz->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2079
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2080 /* 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
2081 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2082 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2083 result = PyTuple_New(npools);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2084 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2085 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2086 lz->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2087 for (i=0; i < npools; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2088 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
2089 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2090 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2091 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2092 Py_DECREF(old_result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2093 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2094 /* 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
2095 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
2096
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2097 /* 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
2098 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
2099 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
2100 pool = PyTuple_GET_ITEM(pools, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2101 indices[i]++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2102 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
2103 /* 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
2104 indices[i] = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2105 elem = PyTuple_GET_ITEM(pool, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2106 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2107 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2108 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2109 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2110 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2111 /* 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
2112 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
2113 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2114 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2115 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2116 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2117 break;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2118 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2119 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2120
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2121 /* 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
2122 and we're done. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2123 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2124 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2125 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2126
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2127 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2128 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
2129
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2130 empty:
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2131 lz->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2132 return NULL;
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Christian Heimes <christian@cheimes.de>
parents: 44881
diff changeset
2133 }
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
2134
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2135 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2136 product_reduce(productobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2137 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2138 if (lz->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2139 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
2140 } else if (lz->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2141 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
2142 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2143 PyObject *indices;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2144 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2145
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2146 /* 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
2147 * 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
2148 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2149 n = PyTuple_GET_SIZE(lz->pools);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2150 indices = PyTuple_New(n);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2151 if (indices == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2152 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2153 for (i=0; i<n; i++){
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2154 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
2155 if (!index) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2156 Py_DECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2157 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2158 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2159 PyTuple_SET_ITEM(indices, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2160 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2161 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
2162 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2163 }
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parents: 72926
diff changeset
2164
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parents: 72926
diff changeset
2165 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2166 product_setstate(productobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2167 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2168 PyObject *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2169 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2170
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2171 n = PyTuple_GET_SIZE(lz->pools);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2172 if (!PyTuple_Check(state) || PyTuple_GET_SIZE(state) != n) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2173 PyErr_SetString(PyExc_ValueError, "invalid arguments");
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parents: 72926
diff changeset
2174 return NULL;
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parents: 72926
diff changeset
2175 }
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parents: 72926
diff changeset
2176 for (i=0; i<n; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2177 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2178 PyObject* indexObject = PyTuple_GET_ITEM(state, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2179 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
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parents: 72926
diff changeset
2180 if (index < 0 && PyErr_Occurred())
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parents: 72926
diff changeset
2181 return NULL; /* not an integer */
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parents: 72926
diff changeset
2182 /* clamp the index */
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parents: 72926
diff changeset
2183 if (index < 0)
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parents: 72926
diff changeset
2184 index = 0;
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parents: 72926
diff changeset
2185 else if (index > n-1)
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parents: 72926
diff changeset
2186 index = n-1;
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parents: 72926
diff changeset
2187 lz->indices[i] = index;
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parents: 72926
diff changeset
2188 }
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parents: 72926
diff changeset
2189
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2190 result = PyTuple_New(n);
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parents: 72926
diff changeset
2191 if (!result)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2192 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2193 for (i=0; i<n; i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2194 PyObject *pool = PyTuple_GET_ITEM(lz->pools, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2195 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
2196 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2197 PyTuple_SET_ITEM(result, i, element);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2198 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2199 Py_CLEAR(lz->result);
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2200 lz->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2201 Py_RETURN_NONE;
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2202 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2203
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2204 static PyMethodDef product_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2205 {"__reduce__", (PyCFunction)product_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2206 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2207 {"__setstate__", (PyCFunction)product_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2208 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2209 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2210 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2211
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
2212 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
2213 "product(*iterables) --> product object\n\
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2214 \n\
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2215 Cartesian product of input iterables. Equivalent to nested for-loops.\n\n\
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diff changeset
2216 For example, product(A, B) returns the same as: ((x,y) for x in A for y in B).\n\
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2217 The leftmost iterators are in the outermost for-loop, so the output tuples\n\
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2218 cycle in a manner similar to an odometer (with the rightmost element changing\n\
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2219 on every iteration).\n\n\
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2220 To compute the product of an iterable with itself, specify the number\n\
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2221 of repetitions with the optional repeat keyword argument. For example,\n\
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2222 product(A, repeat=4) means the same as product(A, A, A, A).\n\n\
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2223 product('ab', range(3)) --> ('a',0) ('a',1) ('a',2) ('b',0) ('b',1) ('b',2)\n\
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2224 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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2225
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2226 static PyTypeObject product_type = {
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2227 PyVarObject_HEAD_INIT(NULL, 0)
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2228 "itertools.product", /* tp_name */
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2229 sizeof(productobject), /* tp_basicsize */
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2230 0, /* tp_itemsize */
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2231 /* methods */
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2232 (destructor)product_dealloc, /* tp_dealloc */
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2233 0, /* tp_print */
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2234 0, /* tp_getattr */
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2235 0, /* tp_setattr */
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2236 0, /* tp_reserved */
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2237 0, /* tp_repr */
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2238 0, /* tp_as_number */
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2239 0, /* tp_as_sequence */
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2240 0, /* tp_as_mapping */
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2241 0, /* tp_hash */
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2242 0, /* tp_call */
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2243 0, /* tp_str */
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2244 PyObject_GenericGetAttr, /* tp_getattro */
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2245 0, /* tp_setattro */
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2246 0, /* tp_as_buffer */
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2247 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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2248 Py_TPFLAGS_BASETYPE, /* tp_flags */
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2249 product_doc, /* tp_doc */
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2250 (traverseproc)product_traverse, /* tp_traverse */
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2251 0, /* tp_clear */
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2252 0, /* tp_richcompare */
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2253 0, /* tp_weaklistoffset */
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2254 PyObject_SelfIter, /* tp_iter */
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2255 (iternextfunc)product_next, /* tp_iternext */
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2256 product_methods, /* tp_methods */
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2257 0, /* tp_members */
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2258 0, /* tp_getset */
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2259 0, /* tp_base */
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2260 0, /* tp_dict */
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2261 0, /* tp_descr_get */
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2262 0, /* tp_descr_set */
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2263 0, /* tp_dictoffset */
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2264 0, /* tp_init */
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2265 0, /* tp_alloc */
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2266 product_new, /* tp_new */
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2267 PyObject_GC_Del, /* tp_free */
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2268 };
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2269
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2270
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diff changeset
2271 /* combinations object ************************************************************/
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2272
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2273 typedef struct {
61466
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2274 PyObject_HEAD
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2275 PyObject *pool; /* input converted to a tuple */
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2276 Py_ssize_t *indices; /* one index per result element */
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2277 PyObject *result; /* most recently returned result tuple */
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diff changeset
2278 Py_ssize_t r; /* size of result tuple */
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diff changeset
2279 int stopped; /* set to 1 when the combinations iterator is exhausted */
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2280 } combinationsobject;
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2281
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diff changeset
2282 static PyTypeObject combinations_type;
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2283
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diff changeset
2284 static PyObject *
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2285 combinations_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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2286 {
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2287 combinationsobject *co;
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2288 Py_ssize_t n;
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2289 Py_ssize_t r;
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2290 PyObject *pool = NULL;
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2291 PyObject *iterable = NULL;
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2292 Py_ssize_t *indices = NULL;
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2293 Py_ssize_t i;
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2294 static char *kwargs[] = {"iterable", "r", NULL};
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2295
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2296 if (!PyArg_ParseTupleAndKeywords(args, kwds, "On:combinations", kwargs,
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2297 &iterable, &r))
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2298 return NULL;
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2299
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2300 pool = PySequence_Tuple(iterable);
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2301 if (pool == NULL)
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2302 goto error;
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2303 n = PyTuple_GET_SIZE(pool);
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2304 if (r < 0) {
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2305 PyErr_SetString(PyExc_ValueError, "r must be non-negative");
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2306 goto error;
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2307 }
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2308
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2309 indices = PyMem_Malloc(r * sizeof(Py_ssize_t));
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2310 if (indices == NULL) {
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2311 PyErr_NoMemory();
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2312 goto error;
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2313 }
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2314
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2315 for (i=0 ; i<r ; i++)
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2316 indices[i] = i;
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2317
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2318 /* create combinationsobject structure */
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2319 co = (combinationsobject *)type->tp_alloc(type, 0);
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2320 if (co == NULL)
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2321 goto error;
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2322
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2323 co->pool = pool;
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2324 co->indices = indices;
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2325 co->result = NULL;
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2326 co->r = r;
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2327 co->stopped = r > n ? 1 : 0;
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2328
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2329 return (PyObject *)co;
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2330
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2331 error:
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2332 if (indices != NULL)
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2333 PyMem_Free(indices);
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2334 Py_XDECREF(pool);
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2335 return NULL;
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2336 }
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2337
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diff changeset
2338 static void
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2339 combinations_dealloc(combinationsobject *co)
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2340 {
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2341 PyObject_GC_UnTrack(co);
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2342 Py_XDECREF(co->pool);
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2343 Py_XDECREF(co->result);
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2344 if (co->indices != NULL)
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2345 PyMem_Free(co->indices);
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2346 Py_TYPE(co)->tp_free(co);
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2347 }
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2348
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diff changeset
2349 static int
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2350 combinations_traverse(combinationsobject *co, visitproc visit, void *arg)
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2351 {
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2352 Py_VISIT(co->pool);
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2353 Py_VISIT(co->result);
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2354 return 0;
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2355 }
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diff changeset
2356
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diff changeset
2357 static PyObject *
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diff changeset
2358 combinations_next(combinationsobject *co)
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2359 {
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2360 PyObject *elem;
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2361 PyObject *oldelem;
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parents: 57525
diff changeset
2362 PyObject *pool = co->pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2363 Py_ssize_t *indices = co->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2364 PyObject *result = co->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2365 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
2366 Py_ssize_t r = co->r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2367 Py_ssize_t i, j, index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2368
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2369 if (co->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2370 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2371
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2372 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2373 /* 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
2374 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2375 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2376 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2377 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2378 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2379 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2380 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2381 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2382 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2383 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2384 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2385 /* 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
2386 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2387 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2388 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2389 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2390 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2391 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2392 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2393 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
2394 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2395 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2396 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2397 Py_DECREF(old_result);
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 /* 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
2400 * 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
2401 * PyTuple's freelist.
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2402 */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2403 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
2404
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2405 /* 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
2406 at its maximum (i + n - r). */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2407 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
2408 ;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2409
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2410 /* 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
2411 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
2412 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2413 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2414
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2415 /* 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
2416 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
2417 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
2418 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
2419 indices[i]++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2420 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
2421 indices[j] = indices[j-1] + 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2422
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2423 /* 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
2424 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
2425 for ( ; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2426 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2427 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2428 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2429 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2430 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2431 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2432 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2433 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2434
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2435 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2436 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
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 empty:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2439 co->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2440 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
2441 }
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
2442
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2443 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2444 combinations_reduce(combinationsobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2445 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2446 if (lz->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2447 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
2448 } else if (lz->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2449 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
2450 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2451 PyObject *indices;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2452 Py_ssize_t i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2453
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2454 /* 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
2455 indices = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2456 if (!indices)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2457 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2458 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
2459 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2460 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
2461 if (!index) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2462 Py_DECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2463 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2464 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2465 PyTuple_SET_ITEM(indices, i, index);
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 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
2469 }
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2472 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2473 combinations_setstate(combinationsobject *lz, PyObject *state)
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 PyObject *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2476 Py_ssize_t i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2477 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
2478
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2479 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
2480 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2481 PyErr_SetString(PyExc_ValueError, "invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2482 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2483 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2484
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2485 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
2486 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2487 Py_ssize_t max;
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parents: 72926
diff changeset
2488 PyObject* indexObject = PyTuple_GET_ITEM(state, i);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2489 Py_ssize_t index = PyLong_AsSsize_t(indexObject);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2490 if (index == -1 && PyErr_Occurred())
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diff changeset
2491 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2492 max = i + n - lz->r;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2493 /* clamp the index (beware of negative max) */
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diff changeset
2494 if (index > max)
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2495 index = max;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2496 if (index < 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2497 index = 0;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2498 lz->indices[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2499 }
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2500
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2501 result = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2502 if (result == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2503 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2504 for (i=0; i<lz->r; i++) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2505 PyObject *element = PyTuple_GET_ITEM(lz->pool, lz->indices[i]);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2506 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2507 PyTuple_SET_ITEM(result, i, element);
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parents: 72926
diff changeset
2508 }
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2509
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2510 Py_CLEAR(lz->result);
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diff changeset
2511 lz->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2512 Py_RETURN_NONE;
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diff changeset
2513 }
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2514
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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2515 static PyMethodDef combinations_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2516 {"__reduce__", (PyCFunction)combinations_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
2517 reduce_doc},
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parents: 72926
diff changeset
2518 {"__setstate__", (PyCFunction)combinations_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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parents: 72926
diff changeset
2519 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
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diff changeset
2520 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
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diff changeset
2521 };
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2522
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2523 PyDoc_STRVAR(combinations_doc,
57344
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
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2524 "combinations(iterable, r) --> combinations object\n\
45548
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2525 \n\
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2526 Return successive r-length combinations of elements in the iterable.\n\n\
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2527 combinations(range(4), 3) --> (0,1,2), (0,1,3), (0,2,3), (1,2,3)");
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2528
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2529 static PyTypeObject combinations_type = {
61466
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2530 PyVarObject_HEAD_INIT(NULL, 0)
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2531 "itertools.combinations", /* tp_name */
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diff changeset
2532 sizeof(combinationsobject), /* tp_basicsize */
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diff changeset
2533 0, /* tp_itemsize */
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2534 /* methods */
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2535 (destructor)combinations_dealloc, /* tp_dealloc */
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2536 0, /* tp_print */
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2537 0, /* tp_getattr */
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2538 0, /* tp_setattr */
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2539 0, /* tp_reserved */
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2540 0, /* tp_repr */
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2541 0, /* tp_as_number */
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2542 0, /* tp_as_sequence */
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diff changeset
2543 0, /* tp_as_mapping */
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2544 0, /* tp_hash */
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2545 0, /* tp_call */
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2546 0, /* tp_str */
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diff changeset
2547 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
2548 0, /* tp_setattro */
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diff changeset
2549 0, /* tp_as_buffer */
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diff changeset
2550 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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diff changeset
2551 Py_TPFLAGS_BASETYPE, /* tp_flags */
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diff changeset
2552 combinations_doc, /* tp_doc */
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2553 (traverseproc)combinations_traverse,/* tp_traverse */
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2554 0, /* tp_clear */
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2555 0, /* tp_richcompare */
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diff changeset
2556 0, /* tp_weaklistoffset */
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diff changeset
2557 PyObject_SelfIter, /* tp_iter */
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2558 (iternextfunc)combinations_next, /* tp_iternext */
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diff changeset
2559 combinations_methods, /* tp_methods */
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diff changeset
2560 0, /* tp_members */
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diff changeset
2561 0, /* tp_getset */
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diff changeset
2562 0, /* tp_base */
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2563 0, /* tp_dict */
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2564 0, /* tp_descr_get */
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2565 0, /* tp_descr_set */
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2566 0, /* tp_dictoffset */
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diff changeset
2567 0, /* tp_init */
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2568 0, /* tp_alloc */
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diff changeset
2569 combinations_new, /* tp_new */
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2570 PyObject_GC_Del, /* tp_free */
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2571 };
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2572
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2573
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
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2574 /* combinations with replacement object *******************************************/
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
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2575
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
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2576 /* Equivalent to:
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2577
61466
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diff changeset
2578 def combinations_with_replacement(iterable, r):
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diff changeset
2579 "combinations_with_replacement('ABC', 2) --> AA AB AC BB BC CC"
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diff changeset
2580 # number items returned: (n+r-1)! / r! / (n-1)!
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2581 pool = tuple(iterable)
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2582 n = len(pool)
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2583 indices = [0] * r
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2584 yield tuple(pool[i] for i in indices)
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2585 while 1:
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2586 for i in reversed(range(r)):
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2587 if indices[i] != n - 1:
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2588 break
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2589 else:
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2590 return
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2591 indices[i:] = [indices[i] + 1] * (r - i)
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2592 yield tuple(pool[i] for i in indices)
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2593
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2594 def combinations_with_replacement2(iterable, r):
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2595 'Alternate version that filters from product()'
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2596 pool = tuple(iterable)
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2597 n = len(pool)
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2598 for indices in product(range(n), repeat=r):
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2599 if sorted(indices) == list(indices):
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2600 yield tuple(pool[i] for i in indices)
51100
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2601 */
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2602 typedef struct {
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2603 PyObject_HEAD
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2604 PyObject *pool; /* input converted to a tuple */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2605 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
2606 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
2607 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
2608 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
2609 } cwrobject;
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2610
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2611 static PyTypeObject cwr_type;
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2612
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2613 static PyObject *
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2614 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
2615 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2616 cwrobject *co;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2617 Py_ssize_t n;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2618 Py_ssize_t r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2619 PyObject *pool = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2620 PyObject *iterable = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2621 Py_ssize_t *indices = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2622 Py_ssize_t i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2623 static char *kwargs[] = {"iterable", "r", 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 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
2626 &iterable, &r))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2627 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2628
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2629 pool = PySequence_Tuple(iterable);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2630 if (pool == NULL)
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 n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2633 if (r < 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2634 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
2635 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2636 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2637
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2638 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
2639 if (indices == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2640 PyErr_NoMemory();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2641 goto error;
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
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2644 for (i=0 ; i<r ; i++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2645 indices[i] = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2646
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2647 /* create cwrobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2648 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
2649 if (co == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2650 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2651
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2652 co->pool = pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2653 co->indices = indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2654 co->result = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2655 co->r = r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2656 co->stopped = !n && r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2657
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2658 return (PyObject *)co;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2659
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2660 error:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2661 if (indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2662 PyMem_Free(indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2663 Py_XDECREF(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2664 return NULL;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2665 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2666
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2667 static void
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2668 cwr_dealloc(cwrobject *co)
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2669 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2670 PyObject_GC_UnTrack(co);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2671 Py_XDECREF(co->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2672 Py_XDECREF(co->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2673 if (co->indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2674 PyMem_Free(co->indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2675 Py_TYPE(co)->tp_free(co);
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2676 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2677
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2678 static int
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2679 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
2680 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2681 Py_VISIT(co->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2682 Py_VISIT(co->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2683 return 0;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2684 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2685
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2686 static PyObject *
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2687 cwr_next(cwrobject *co)
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2688 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2689 PyObject *elem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2690 PyObject *oldelem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2691 PyObject *pool = co->pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2692 Py_ssize_t *indices = co->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2693 PyObject *result = co->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2694 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
2695 Py_ssize_t r = co->r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2696 Py_ssize_t i, j, index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2697
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2698 if (co->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2699 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2700
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2701 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2702 /* 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
2703 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2704 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2705 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2706 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2707 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2708 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2709 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2710 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2711 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2712 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2713 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2714 /* 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
2715 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2716 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2717 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2718 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2719 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2720 co->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2721 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2722 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
2723 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2724 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2725 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2726 Py_DECREF(old_result);
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 /* 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
2729 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
2730 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
2731
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2732 /* 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
2733 * at its maximum (n-1). */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2734 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
2735 ;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2736
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2737 /* 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
2738 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
2739 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2740 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2741
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2742 /* 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
2743 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
2744 indices[i]++;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2745 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
2746 indices[j] = indices[j-1];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2747
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2748 /* 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
2749 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
2750 for ( ; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2751 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2752 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2753 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2754 oldelem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2755 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2756 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2757 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2758 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2759
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2760 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2761 return result;
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 empty:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2764 co->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2765 return NULL;
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2766 }
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2767
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2768 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2769 cwr_reduce(cwrobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2770 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2771 if (lz->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2772 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
2773 } else if (lz->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2774 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
2775 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2776 PyObject *indices;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2777 Py_ssize_t i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2778
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2779 /* 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
2780 indices = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2781 if (!indices)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2782 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2783 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
2784 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2785 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
2786 if (!index) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2787 Py_DECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2788 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2789 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2790 PyTuple_SET_ITEM(indices, i, index);
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 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
2794 }
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2797 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2798 cwr_setstate(cwrobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2799 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2800 PyObject *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2801 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2802
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2803 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
2804 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2805 PyErr_SetString(PyExc_ValueError, "invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2806 return NULL;
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2809 n = PyTuple_GET_SIZE(lz->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2810 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
2811 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2812 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
2813 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
2814 if (index < 0 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2815 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2816 /* clamp the index */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2817 if (index < 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2818 index = 0;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2819 else if (index > n-1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2820 index = n-1;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2821 lz->indices[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2822 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2823 result = PyTuple_New(lz->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2824 if (result == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2825 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2826 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
2827 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
2828 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2829 PyTuple_SET_ITEM(result, i, element);
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 Py_CLEAR(lz->result);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2832 lz->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2833 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2834 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2835
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2836 static PyMethodDef cwr_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2837 {"__reduce__", (PyCFunction)cwr_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2838 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2839 {"__setstate__", (PyCFunction)cwr_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2840 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2841 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2842 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2843
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2844 PyDoc_STRVAR(cwr_doc,
57344
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
parents: 57042
diff changeset
2845 "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
2846 \n\
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2847 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
2848 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
2849 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
2850
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2851 static PyTypeObject cwr_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2852 PyVarObject_HEAD_INIT(NULL, 0)
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2853 "itertools.combinations_with_replacement", /* tp_name */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2854 sizeof(cwrobject), /* tp_basicsize */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2855 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2856 /* methods */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2857 (destructor)cwr_dealloc, /* tp_dealloc */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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diff changeset
2858 0, /* tp_print */
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diff changeset
2859 0, /* tp_getattr */
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diff changeset
2860 0, /* tp_setattr */
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diff changeset
2861 0, /* tp_reserved */
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diff changeset
2862 0, /* tp_repr */
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diff changeset
2863 0, /* tp_as_number */
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diff changeset
2864 0, /* tp_as_sequence */
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diff changeset
2865 0, /* tp_as_mapping */
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diff changeset
2866 0, /* tp_hash */
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diff changeset
2867 0, /* tp_call */
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
2868 0, /* tp_str */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2869 PyObject_GenericGetAttr, /* tp_getattro */
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diff changeset
2870 0, /* tp_setattro */
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diff changeset
2871 0, /* tp_as_buffer */
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diff changeset
2872 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
2873 Py_TPFLAGS_BASETYPE, /* tp_flags */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2874 cwr_doc, /* tp_doc */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2875 (traverseproc)cwr_traverse, /* tp_traverse */
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diff changeset
2876 0, /* tp_clear */
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diff changeset
2877 0, /* tp_richcompare */
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parents: 57525
diff changeset
2878 0, /* tp_weaklistoffset */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2879 PyObject_SelfIter, /* tp_iter */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2880 (iternextfunc)cwr_next, /* tp_iternext */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2881 cwr_methods, /* tp_methods */
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diff changeset
2882 0, /* tp_members */
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diff changeset
2883 0, /* tp_getset */
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diff changeset
2884 0, /* tp_base */
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diff changeset
2885 0, /* tp_dict */
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diff changeset
2886 0, /* tp_descr_get */
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diff changeset
2887 0, /* tp_descr_set */
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diff changeset
2888 0, /* tp_dictoffset */
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diff changeset
2889 0, /* tp_init */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2890 0, /* tp_alloc */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2891 cwr_new, /* tp_new */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
2892 PyObject_GC_Del, /* tp_free */
51100
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2893 };
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2894
4005011d3a09 Forward port r69001: itertools.combinations_with_replacement().
Raymond Hettinger <python@rcn.com>
parents: 51063
diff changeset
2895
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diff changeset
2896 /* permutations object ************************************************************
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2897
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parents: 45738
diff changeset
2898 def permutations(iterable, r=None):
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2899 'permutations(range(3), 2) --> (0,1) (0,2) (1,0) (1,2) (2,0) (2,1)'
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Christian Heimes <christian@cheimes.de>
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diff changeset
2900 pool = tuple(iterable)
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2901 n = len(pool)
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2902 r = n if r is None else r
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diff changeset
2903 indices = range(n)
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diff changeset
2904 cycles = range(n-r+1, n+1)[::-1]
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2905 yield tuple(pool[i] for i in indices[:r])
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2906 while n:
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2907 for i in reversed(range(r)):
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diff changeset
2908 cycles[i] -= 1
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diff changeset
2909 if cycles[i] == 0:
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diff changeset
2910 indices[i:] = indices[i+1:] + indices[i:i+1]
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diff changeset
2911 cycles[i] = n - i
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diff changeset
2912 else:
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diff changeset
2913 j = cycles[i]
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diff changeset
2914 indices[i], indices[-j] = indices[-j], indices[i]
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
2915 yield tuple(pool[i] for i in indices[:r])
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diff changeset
2916 break
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diff changeset
2917 else:
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parents: 57525
diff changeset
2918 return
45773
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diff changeset
2919 */
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diff changeset
2920
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
2921 typedef struct {
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diff changeset
2922 PyObject_HEAD
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diff changeset
2923 PyObject *pool; /* input converted to a tuple */
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parents: 57525
diff changeset
2924 Py_ssize_t *indices; /* one index per element in the pool */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2925 Py_ssize_t *cycles; /* one rollover counter per element in the result */
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parents: 57525
diff changeset
2926 PyObject *result; /* most recently returned result tuple */
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diff changeset
2927 Py_ssize_t r; /* size of result tuple */
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diff changeset
2928 int stopped; /* set to 1 when the permutations iterator is exhausted */
45773
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diff changeset
2929 } permutationsobject;
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2930
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
2931 static PyTypeObject permutations_type;
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diff changeset
2932
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
2933 static PyObject *
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parents: 45738
diff changeset
2934 permutations_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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parents: 45738
diff changeset
2935 {
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diff changeset
2936 permutationsobject *po;
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diff changeset
2937 Py_ssize_t n;
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diff changeset
2938 Py_ssize_t r;
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diff changeset
2939 PyObject *robj = Py_None;
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diff changeset
2940 PyObject *pool = NULL;
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diff changeset
2941 PyObject *iterable = NULL;
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diff changeset
2942 Py_ssize_t *indices = NULL;
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diff changeset
2943 Py_ssize_t *cycles = NULL;
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diff changeset
2944 Py_ssize_t i;
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diff changeset
2945 static char *kwargs[] = {"iterable", "r", NULL};
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2946
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diff changeset
2947 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:permutations", kwargs,
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diff changeset
2948 &iterable, &robj))
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diff changeset
2949 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2950
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2951 pool = PySequence_Tuple(iterable);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2952 if (pool == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2953 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2954 n = PyTuple_GET_SIZE(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2955
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2956 r = n;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2957 if (robj != Py_None) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2958 if (!PyLong_Check(robj)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2959 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
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 r = PyLong_AsSsize_t(robj);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2963 if (r == -1 && PyErr_Occurred())
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 if (r < 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2967 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
2968 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2969 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2970
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2971 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
2972 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
2973 if (indices == NULL || cycles == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2974 PyErr_NoMemory();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2975 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2976 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2977
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2978 for (i=0 ; i<n ; i++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2979 indices[i] = i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2980 for (i=0 ; i<r ; i++)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2981 cycles[i] = n - i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2982
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2983 /* create permutationsobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2984 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
2985 if (po == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2986 goto error;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2987
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2988 po->pool = pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2989 po->indices = indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2990 po->cycles = cycles;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2991 po->result = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2992 po->r = r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2993 po->stopped = r > n ? 1 : 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2994
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2995 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
2996
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
2997 error:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2998 if (indices != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
2999 PyMem_Free(indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3000 if (cycles != NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3001 PyMem_Free(cycles);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3002 Py_XDECREF(pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3003 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
3004 }
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
3005
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
3006 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
3007 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
3008 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3009 PyObject_GC_UnTrack(po);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3010 Py_XDECREF(po->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3011 Py_XDECREF(po->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3012 PyMem_Free(po->indices);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3013 PyMem_Free(po->cycles);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3014 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
3015 }
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
3016
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
3017 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
3018 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
3019 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3020 Py_VISIT(po->pool);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3021 Py_VISIT(po->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3022 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
3023 }
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
3024
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
3025 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
3026 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
3027 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3028 PyObject *elem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3029 PyObject *oldelem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3030 PyObject *pool = po->pool;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3031 Py_ssize_t *indices = po->indices;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3032 Py_ssize_t *cycles = po->cycles;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3033 PyObject *result = po->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3034 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
3035 Py_ssize_t r = po->r;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3036 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
3037
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3038 if (po->stopped)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3039 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3040
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3041 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3042 /* 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
3043 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3044 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3045 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3046 po->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3047 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3048 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3049 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3050 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3051 PyTuple_SET_ITEM(result, i, elem);
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 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3054 if (n == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3055 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3056
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3057 /* 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
3058 if (Py_REFCNT(result) > 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3059 PyObject *old_result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3060 result = PyTuple_New(r);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3061 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3062 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3063 po->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3064 for (i=0; i<r ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3065 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
3066 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3067 PyTuple_SET_ITEM(result, i, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3068 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3069 Py_DECREF(old_result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3070 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3071 /* 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
3072 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
3073
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3074 /* 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
3075 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
3076 cycles[i] -= 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3077 if (cycles[i] == 0) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3078 /* 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
3079 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3080 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
3081 indices[j] = indices[j+1];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3082 indices[n-1] = index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3083 cycles[i] = n - i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3084 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3085 j = cycles[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3086 index = indices[i];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3087 indices[i] = indices[n-j];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3088 indices[n-j] = index;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3089
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3090 for (k=i; k<r ; k++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3091 /* 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
3092 /* 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
3093 index = indices[k];
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3094 elem = PyTuple_GET_ITEM(pool, index);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3095 Py_INCREF(elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3096 oldelem = PyTuple_GET_ITEM(result, k);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3097 PyTuple_SET_ITEM(result, k, elem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3098 Py_DECREF(oldelem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3099 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3100 break;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3101 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3102 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3103 /* 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
3104 rolled-over and we're done. */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3105 if (i < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3106 goto empty;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3107 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3108 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3109 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
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 empty:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3112 po->stopped = 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3113 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
3114 }
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
3115
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3116 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3117 permutations_reduce(permutationsobject *po)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3118 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3119 if (po->result == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3120 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
3121 } else if (po->stopped) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3122 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
3123 } else {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3124 PyObject *indices=NULL, *cycles=NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3125 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3126
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3127 /* 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
3128 n = PyTuple_GET_SIZE(po->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3129 indices = PyTuple_New(n);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3130 if (indices == NULL)
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 for (i=0; i<n; i++){
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3133 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
3134 if (!index)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3135 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3136 PyTuple_SET_ITEM(indices, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3137 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3138
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3139 cycles = PyTuple_New(po->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3140 if (cycles == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3141 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3142 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
3143 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3144 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
3145 if (!index)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3146 goto err;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3147 PyTuple_SET_ITEM(cycles, i, index);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3148 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3149 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
3150 po->pool, po->r,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3151 indices, cycles);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3152 err:
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3153 Py_XDECREF(indices);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3154 Py_XDECREF(cycles);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3155 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3156 }
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3159 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3160 permutations_setstate(permutationsobject *po, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3161 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3162 PyObject *indices, *cycles, *result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3163 Py_ssize_t n, i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3164
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3165 if (!PyArg_ParseTuple(state, "O!O!",
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3166 &PyTuple_Type, &indices,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3167 &PyTuple_Type, &cycles))
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3168 return NULL;
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 n = PyTuple_GET_SIZE(po->pool);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3171 if (PyTuple_GET_SIZE(indices) != n ||
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3172 PyTuple_GET_SIZE(cycles) != po->r)
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 PyErr_SetString(PyExc_ValueError, "invalid arguments");
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3175 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3176 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3177
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3178 for (i=0; i<n; i++)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3179 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3180 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
3181 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
3182 if (index < 0 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3183 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3184 /* clamp the index */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3185 if (index < 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3186 index = 0;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3187 else if (index > n-1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3188 index = n-1;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3189 po->indices[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3190 }
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Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3191
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3192 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
3193 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3194 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
3195 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
3196 if (index < 0 && PyErr_Occurred())
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3197 return NULL; /* not an integer */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3198 if (index < 1)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3199 index = 1;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3200 else if (index > n-i)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3201 index = n-i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3202 po->cycles[i] = index;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3203 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3204 result = PyTuple_New(po->r);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3205 if (result == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3206 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3207 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
3208 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
3209 Py_INCREF(element);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3210 PyTuple_SET_ITEM(result, i, element);
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 Py_CLEAR(po->result);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3213 po->result = result;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3214 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3215 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3216
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3217 static PyMethodDef permuations_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3218 {"__reduce__", (PyCFunction)permutations_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3219 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3220 {"__setstate__", (PyCFunction)permutations_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3221 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3222 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3223 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3224
45773
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Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3225 PyDoc_STRVAR(permutations_doc,
47555
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Georg Brandl <georg@python.org>
parents: 46238
diff changeset
3226 "permutations(iterable[, r]) --> permutations object\n\
45773
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Christian Heimes <christian@cheimes.de>
parents: 45738
diff changeset
3227 \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
3228 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
3229 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
3230
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
3231 static PyTypeObject permutations_type = {
61466
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diff changeset
3232 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3233 "itertools.permutations", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3234 sizeof(permutationsobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3235 0, /* tp_itemsize */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3236 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3237 (destructor)permutations_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3238 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3239 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3240 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3241 0, /* tp_reserved */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3242 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3243 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3244 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3245 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3246 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3247 0, /* tp_call */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3248 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3249 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3250 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3251 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3252 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
3253 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3254 permutations_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3255 (traverseproc)permutations_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3256 0, /* tp_clear */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3257 0, /* tp_richcompare */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3258 0, /* tp_weaklistoffset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3259 PyObject_SelfIter, /* tp_iter */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3260 (iternextfunc)permutations_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3261 permuations_methods, /* tp_methods */
61466
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diff changeset
3262 0, /* tp_members */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3263 0, /* tp_getset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3264 0, /* tp_base */
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parents: 57525
diff changeset
3265 0, /* tp_dict */
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diff changeset
3266 0, /* tp_descr_get */
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3267 0, /* tp_descr_set */
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diff changeset
3268 0, /* tp_dictoffset */
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diff changeset
3269 0, /* tp_init */
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diff changeset
3270 0, /* tp_alloc */
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diff changeset
3271 permutations_new, /* tp_new */
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parents: 57525
diff changeset
3272 PyObject_GC_Del, /* tp_free */
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3273 };
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3274
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3275 /* accumulate object ************************************************************/
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3276
5da093b49c2a Add itertools.accumulate().
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3277 typedef struct {
5da093b49c2a Add itertools.accumulate().
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3278 PyObject_HEAD
5da093b49c2a Add itertools.accumulate().
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3279 PyObject *total;
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3280 PyObject *it;
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
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3281 PyObject *binop;
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3282 } accumulateobject;
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3283
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3284 static PyTypeObject accumulate_type;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3285
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3286 static PyObject *
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3287 accumulate_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3288 {
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3289 static char *kwargs[] = {"iterable", "func", NULL};
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3290 PyObject *iterable;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3291 PyObject *it;
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3292 PyObject *binop = Py_None;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3293 accumulateobject *lz;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3294
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3295 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
3296 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
3297 return NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3298
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3299 /* Get iterator. */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3300 it = PyObject_GetIter(iterable);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3301 if (it == NULL)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3302 return NULL;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3303
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3304 /* create accumulateobject structure */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3305 lz = (accumulateobject *)type->tp_alloc(type, 0);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3306 if (lz == NULL) {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3307 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
3308 return NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3309 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3310
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3311 if (binop != Py_None) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3312 Py_XINCREF(binop);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3313 lz->binop = binop;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3314 }
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
3315 lz->total = NULL;
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3316 lz->it = it;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3317 return (PyObject *)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
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3320 static void
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3321 accumulate_dealloc(accumulateobject *lz)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3322 {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3323 PyObject_GC_UnTrack(lz);
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3324 Py_XDECREF(lz->binop);
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3325 Py_XDECREF(lz->total);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3326 Py_XDECREF(lz->it);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3327 Py_TYPE(lz)->tp_free(lz);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3328 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3329
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3330 static int
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3331 accumulate_traverse(accumulateobject *lz, visitproc visit, void *arg)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3332 {
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3333 Py_VISIT(lz->binop);
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3334 Py_VISIT(lz->it);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3335 Py_VISIT(lz->total);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3336 return 0;
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
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3339 static PyObject *
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3340 accumulate_next(accumulateobject *lz)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3341 {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3342 PyObject *val, *oldtotal, *newtotal;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3343
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3344 val = PyIter_Next(lz->it);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3345 if (val == NULL)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3346 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
3347
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 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
3349 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
3350 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
3351 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
3352 }
69021
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3353
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3354 if (lz->binop == NULL)
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3355 newtotal = PyNumber_Add(lz->total, val);
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3356 else
79ccefd30a37 Add optional *func* argument to itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66619
diff changeset
3357 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
3358 Py_DECREF(val);
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3359 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
3360 return NULL;
66589
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 oldtotal = lz->total;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3363 lz->total = newtotal;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3364 Py_DECREF(oldtotal);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3365
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3366 Py_INCREF(newtotal);
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3367 return newtotal;
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3368 }
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3369
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3370 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3371 accumulate_reduce(accumulateobject *lz)
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 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
3374 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
3375 lz->total?lz->total:Py_None);
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3378 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3379 accumulate_setstate(accumulateobject *lz, PyObject *state)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3380 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3381 Py_CLEAR(lz->total);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3382 lz->total = state;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3383 Py_INCREF(lz->total);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3384 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3385 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3386
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3387 static PyMethodDef accumulate_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3388 {"__reduce__", (PyCFunction)accumulate_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3389 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3390 {"__setstate__", (PyCFunction)accumulate_setstate, METH_O,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3391 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3392 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3393 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3394
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3395 PyDoc_STRVAR(accumulate_doc,
69022
822c7c0d27d1 Update docstrings for itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 69021
diff changeset
3396 "accumulate(iterable[, func]) --> accumulate object\n\
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3397 \n\
69022
822c7c0d27d1 Update docstrings for itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 69021
diff changeset
3398 Return series of accumulated sums (or other binary function results).");
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3399
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3400 static PyTypeObject accumulate_type = {
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3401 PyVarObject_HEAD_INIT(NULL, 0)
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3402 "itertools.accumulate", /* tp_name */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3403 sizeof(accumulateobject), /* tp_basicsize */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3404 0, /* tp_itemsize */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3405 /* methods */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3406 (destructor)accumulate_dealloc, /* tp_dealloc */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3407 0, /* tp_print */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3408 0, /* tp_getattr */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3409 0, /* tp_setattr */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3410 0, /* tp_reserved */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3411 0, /* tp_repr */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3412 0, /* tp_as_number */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3413 0, /* tp_as_sequence */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3414 0, /* tp_as_mapping */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3415 0, /* tp_hash */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3416 0, /* tp_call */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3417 0, /* tp_str */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3418 PyObject_GenericGetAttr, /* tp_getattro */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3419 0, /* tp_setattro */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3420 0, /* tp_as_buffer */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3421 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3422 Py_TPFLAGS_BASETYPE, /* tp_flags */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3423 accumulate_doc, /* tp_doc */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3424 (traverseproc)accumulate_traverse, /* tp_traverse */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3425 0, /* tp_clear */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3426 0, /* tp_richcompare */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3427 0, /* tp_weaklistoffset */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3428 PyObject_SelfIter, /* tp_iter */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3429 (iternextfunc)accumulate_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3430 accumulate_methods, /* tp_methods */
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3431 0, /* tp_members */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3432 0, /* tp_getset */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3433 0, /* tp_base */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3434 0, /* tp_dict */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3435 0, /* tp_descr_get */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3436 0, /* tp_descr_set */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3437 0, /* tp_dictoffset */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3438 0, /* tp_init */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3439 0, /* tp_alloc */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3440 accumulate_new, /* tp_new */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3441 PyObject_GC_Del, /* tp_free */
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3442 };
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
3443
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
3444
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3445 /* compress object ************************************************************/
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3446
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3447 /* Equivalent to:
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3448
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3449 def compress(data, selectors):
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3450 "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
3451 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
3452 */
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3453
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3454 typedef struct {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3455 PyObject_HEAD
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3456 PyObject *data;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3457 PyObject *selectors;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3458 } compressobject;
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3459
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3460 static PyTypeObject compress_type;
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3461
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3462 static PyObject *
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3463 compress_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3464 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3465 PyObject *seq1, *seq2;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3466 PyObject *data=NULL, *selectors=NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3467 compressobject *lz;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3468 static char *kwargs[] = {"data", "selectors", NULL};
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3469
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3470 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
3471 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3472
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3473 data = PyObject_GetIter(seq1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3474 if (data == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3475 goto fail;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3476 selectors = PyObject_GetIter(seq2);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3477 if (selectors == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3478 goto fail;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3479
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3480 /* create compressobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3481 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
3482 if (lz == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3483 goto fail;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3484 lz->data = data;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3485 lz->selectors = selectors;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3486 return (PyObject *)lz;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3487
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3488 fail:
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3489 Py_XDECREF(data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3490 Py_XDECREF(selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3491 return NULL;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3492 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3493
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3494 static void
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3495 compress_dealloc(compressobject *lz)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3496 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3497 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3498 Py_XDECREF(lz->data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3499 Py_XDECREF(lz->selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3500 Py_TYPE(lz)->tp_free(lz);
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3501 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3502
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3503 static int
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3504 compress_traverse(compressobject *lz, visitproc visit, void *arg)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3505 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3506 Py_VISIT(lz->data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3507 Py_VISIT(lz->selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3508 return 0;
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3509 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3510
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3511 static PyObject *
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3512 compress_next(compressobject *lz)
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3513 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3514 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
3515 PyObject *datum, *selector;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3516 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
3517 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
3518 int ok;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3519
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3520 while (1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3521 /* 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
3522 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
3523 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
3524 exception first).
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3525 */
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 datum = datanext(data);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3528 if (datum == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3529 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3530
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3531 selector = selectornext(selectors);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3532 if (selector == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3533 Py_DECREF(datum);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3534 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3535 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3536
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3537 ok = PyObject_IsTrue(selector);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3538 Py_DECREF(selector);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3539 if (ok == 1)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3540 return datum;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3541 Py_DECREF(datum);
78605
b878df1d23b1 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
Antoine Pitrou <solipsis@pitrou.net>
parents: 76946 78604
diff changeset
3542 if (ok < 0)
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3543 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3544 }
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3545 }
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3546
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3547 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3548 compress_reduce(compressobject *lz)
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 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
3551 lz->data, lz->selectors);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3552 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3553
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3554 static PyMethodDef compress_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3555 {"__reduce__", (PyCFunction)compress_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3556 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3557 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3558 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3559
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3560 PyDoc_STRVAR(compress_doc,
51717
e260d6daf784 Add keyword arg support to itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 51666
diff changeset
3561 "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
3562 \n\
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3563 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
3564 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
3565 selectors to choose the data elements.");
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3566
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3567 static PyTypeObject compress_type = {
61466
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diff changeset
3568 PyVarObject_HEAD_INIT(NULL, 0)
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parents: 57525
diff changeset
3569 "itertools.compress", /* tp_name */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3570 sizeof(compressobject), /* tp_basicsize */
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parents: 57525
diff changeset
3571 0, /* tp_itemsize */
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diff changeset
3572 /* methods */
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diff changeset
3573 (destructor)compress_dealloc, /* tp_dealloc */
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parents: 57525
diff changeset
3574 0, /* tp_print */
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parents: 57525
diff changeset
3575 0, /* tp_getattr */
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parents: 57525
diff changeset
3576 0, /* tp_setattr */
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parents: 57525
diff changeset
3577 0, /* tp_reserved */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3578 0, /* tp_repr */
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parents: 57525
diff changeset
3579 0, /* tp_as_number */
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parents: 57525
diff changeset
3580 0, /* tp_as_sequence */
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diff changeset
3581 0, /* tp_as_mapping */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3582 0, /* tp_hash */
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parents: 57525
diff changeset
3583 0, /* tp_call */
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diff changeset
3584 0, /* tp_str */
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parents: 57525
diff changeset
3585 PyObject_GenericGetAttr, /* tp_getattro */
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parents: 57525
diff changeset
3586 0, /* tp_setattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3587 0, /* tp_as_buffer */
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parents: 57525
diff changeset
3588 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3589 Py_TPFLAGS_BASETYPE, /* tp_flags */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3590 compress_doc, /* tp_doc */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3591 (traverseproc)compress_traverse, /* tp_traverse */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3592 0, /* tp_clear */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3593 0, /* tp_richcompare */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3594 0, /* tp_weaklistoffset */
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parents: 57525
diff changeset
3595 PyObject_SelfIter, /* tp_iter */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3596 (iternextfunc)compress_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3597 compress_methods, /* tp_methods */
61466
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parents: 57525
diff changeset
3598 0, /* tp_members */
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parents: 57525
diff changeset
3599 0, /* tp_getset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3600 0, /* tp_base */
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parents: 57525
diff changeset
3601 0, /* tp_dict */
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parents: 57525
diff changeset
3602 0, /* tp_descr_get */
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diff changeset
3603 0, /* tp_descr_set */
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parents: 57525
diff changeset
3604 0, /* tp_dictoffset */
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parents: 57525
diff changeset
3605 0, /* tp_init */
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parents: 57525
diff changeset
3606 0, /* tp_alloc */
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parents: 57525
diff changeset
3607 compress_new, /* tp_new */
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parents: 57525
diff changeset
3608 PyObject_GC_Del, /* tp_free */
51063
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3609 };
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3610
ad1db0ae98c6 Forward port r68941 adding itertools.compress().
Raymond Hettinger <python@rcn.com>
parents: 50755
diff changeset
3611
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3612 /* filterfalse object ************************************************************/
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3613
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3614 typedef struct {
61466
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diff changeset
3615 PyObject_HEAD
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diff changeset
3616 PyObject *func;
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diff changeset
3617 PyObject *it;
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3618 } filterfalseobject;
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3619
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3620 static PyTypeObject filterfalse_type;
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3621
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3622 static PyObject *
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3623 filterfalse_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3624 {
61466
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parents: 57525
diff changeset
3625 PyObject *func, *seq;
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parents: 57525
diff changeset
3626 PyObject *it;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3627 filterfalseobject *lz;
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parents: 57525
diff changeset
3628
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parents: 57525
diff changeset
3629 if (type == &filterfalse_type &&
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3630 !_PyArg_NoKeywords("filterfalse()", kwds))
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parents: 57525
diff changeset
3631 return NULL;
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diff changeset
3632
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parents: 57525
diff changeset
3633 if (!PyArg_UnpackTuple(args, "filterfalse", 2, 2, &func, &seq))
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parents: 57525
diff changeset
3634 return NULL;
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diff changeset
3635
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diff changeset
3636 /* Get iterator. */
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parents: 57525
diff changeset
3637 it = PyObject_GetIter(seq);
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parents: 57525
diff changeset
3638 if (it == NULL)
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diff changeset
3639 return NULL;
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diff changeset
3640
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diff changeset
3641 /* create filterfalseobject structure */
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diff changeset
3642 lz = (filterfalseobject *)type->tp_alloc(type, 0);
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diff changeset
3643 if (lz == NULL) {
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diff changeset
3644 Py_DECREF(it);
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diff changeset
3645 return NULL;
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diff changeset
3646 }
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diff changeset
3647 Py_INCREF(func);
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diff changeset
3648 lz->func = func;
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diff changeset
3649 lz->it = it;
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diff changeset
3650
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diff changeset
3651 return (PyObject *)lz;
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3652 }
dc5e1d918055 C Code:
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diff changeset
3653
dc5e1d918055 C Code:
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diff changeset
3654 static void
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3655 filterfalse_dealloc(filterfalseobject *lz)
27769
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diff changeset
3656 {
61466
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diff changeset
3657 PyObject_GC_UnTrack(lz);
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diff changeset
3658 Py_XDECREF(lz->func);
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diff changeset
3659 Py_XDECREF(lz->it);
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diff changeset
3660 Py_TYPE(lz)->tp_free(lz);
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diff changeset
3661 }
dc5e1d918055 C Code:
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diff changeset
3662
dc5e1d918055 C Code:
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diff changeset
3663 static int
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
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diff changeset
3664 filterfalse_traverse(filterfalseobject *lz, visitproc visit, void *arg)
27769
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diff changeset
3665 {
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diff changeset
3666 Py_VISIT(lz->it);
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diff changeset
3667 Py_VISIT(lz->func);
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diff changeset
3668 return 0;
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3669 }
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3670
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parents: 27748
diff changeset
3671 static PyObject *
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3672 filterfalse_next(filterfalseobject *lz)
27769
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3673 {
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diff changeset
3674 PyObject *item;
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diff changeset
3675 PyObject *it = lz->it;
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diff changeset
3676 long ok;
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diff changeset
3677 PyObject *(*iternext)(PyObject *);
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diff changeset
3678
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diff changeset
3679 iternext = *Py_TYPE(it)->tp_iternext;
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diff changeset
3680 for (;;) {
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diff changeset
3681 item = iternext(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3682 if (item == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3683 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3684
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3685 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
3686 ok = PyObject_IsTrue(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3687 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3688 PyObject *good;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3689 good = PyObject_CallFunctionObjArgs(lz->func,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3690 item, NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3691 if (good == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3692 Py_DECREF(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3693 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3694 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3695 ok = PyObject_IsTrue(good);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3696 Py_DECREF(good);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3697 }
78604
56dc7b09f390 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72459
diff changeset
3698 if (ok == 0)
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3699 return item;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3700 Py_DECREF(item);
78604
56dc7b09f390 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72459
diff changeset
3701 if (ok < 0)
56dc7b09f390 Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly.
Antoine Pitrou <solipsis@pitrou.net>
parents: 72459
diff changeset
3702 return NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3703 }
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3704 }
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3705
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3706 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3707 filterfalse_reduce(filterfalseobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3708 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3709 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
3710 lz->func, lz->it);
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
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3713 static PyMethodDef filterfalse_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3714 {"__reduce__", (PyCFunction)filterfalse_reduce, METH_NOARGS,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3715 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3716 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3717 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
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 PyDoc_STRVAR(filterfalse_doc,
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3720 "filterfalse(function or None, sequence) --> filterfalse object\n\
27769
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3721 \n\
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3722 Return those items of sequence for which function(item) is false.\n\
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3723 If function is None, return the items that are false.");
dc5e1d918055 C Code:
Raymond Hettinger <python@rcn.com>
parents: 27748
diff changeset
3724
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
3725 static PyTypeObject filterfalse_type = {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3726 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3727 "itertools.filterfalse", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3728 sizeof(filterfalseobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3729 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3730 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3731 (destructor)filterfalse_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3732 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3733 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3734 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3735 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3736 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3737 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3738 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3739 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3740 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3741 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3742 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3743 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3744 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3745 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3746 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
3747 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3748 filterfalse_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3749 (traverseproc)filterfalse_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3750 0, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3751 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3752 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3753 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3754 (iternextfunc)filterfalse_next, /* tp_iternext */
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
3755 filterfalse_methods, /* tp_methods */
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3756 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3757 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3758 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3759 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3760 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3761 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3762 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3763 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3764 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3765 filterfalse_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3766 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3767 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3768
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3769
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3770 /* count object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3771
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3772 typedef struct {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3773 PyObject_HEAD
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3774 Py_ssize_t cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3775 PyObject *long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3776 PyObject *long_step;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3777 } countobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3778
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
3779 /* 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
3780
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
3781 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
3782
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3783 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
3784 Advances with: cnt += 1
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3785 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
3786
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
3787 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
3788
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3789 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
3790 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
3791 Advances with: long_cnt += long_step
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3792 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
3793 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
3794 */
b0db109089c9 Issue 5032: added a step argument to itertools.count() and allowed non-integer arguments.
Raymond Hettinger <python@rcn.com>
parents: 51503
diff changeset
3795
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
3796 static PyTypeObject count_type;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3797
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3798 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3799 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
3800 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3801 countobject *lz;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3802 int slow_mode = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3803 Py_ssize_t cnt = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3804 PyObject *long_cnt = NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3805 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
3806 long step;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
3807 static char *kwlist[] = {"start", "step", 0};
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3808
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3809 if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OO:count",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3810 kwlist, &long_cnt, &long_step))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3811 return NULL;
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 && !PyNumber_Check(long_cnt)) ||
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3814 (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
3815 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
3816 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3817 }
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 if (long_cnt != NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3820 cnt = PyLong_AsSsize_t(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3821 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
3822 PyErr_Clear();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3823 slow_mode = 1;
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 Py_INCREF(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3826 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3827 cnt = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3828 long_cnt = PyLong_FromLong(0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3829 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3830
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3831 /* 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
3832 if (long_step == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3833 long_step = PyLong_FromLong(1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3834 if (long_step == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3835 Py_DECREF(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3836 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3837 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3838 } else
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3839 Py_INCREF(long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3840
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3841 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
3842
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3843 /* 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
3844 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
3845 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
3846 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
3847 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
3848 PyErr_Clear();
61466
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
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3851 if (slow_mode)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3852 cnt = PY_SSIZE_T_MAX;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3853 else
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3854 Py_CLEAR(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3855
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3856 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
3857 (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
3858 assert(slow_mode ||
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3859 (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
3860
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3861 /* create countobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3862 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
3863 if (lz == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3864 Py_XDECREF(long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3865 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3866 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3867 lz->cnt = cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3868 lz->long_cnt = long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3869 lz->long_step = long_step;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3870
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3871 return (PyObject *)lz;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3872 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3873
43734
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3874 static void
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3875 count_dealloc(countobject *lz)
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3876 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3877 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3878 Py_XDECREF(lz->long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3879 Py_XDECREF(lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3880 Py_TYPE(lz)->tp_free(lz);
51661
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3881 }
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3882
51666
f308953c701f Merged revisions 69688,69690 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 51661
diff changeset
3883 static int
51661
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3884 count_traverse(countobject *lz, visitproc visit, void *arg)
003e00797e91 Add GC support to count() objects.
Raymond Hettinger <python@rcn.com>
parents: 51624
diff changeset
3885 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3886 Py_VISIT(lz->long_cnt);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3887 Py_VISIT(lz->long_step);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3888 return 0;
43734
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3889 }
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3890
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3891 static PyObject *
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3892 count_nextlong(countobject *lz)
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3893 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3894 PyObject *long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3895 PyObject *stepped_up;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3896
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3897 long_cnt = lz->long_cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3898 if (long_cnt == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3899 /* Switch to slow_mode */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3900 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
3901 if (long_cnt == 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 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3904 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
3905
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3906 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
3907 if (stepped_up == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3908 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3909 lz->long_cnt = stepped_up;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3910 return long_cnt;
43734
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3911 }
3e5edf19d5f0 Merged revisions 58221-58741 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42334
diff changeset
3912
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3913 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3914 count_next(countobject *lz)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3915 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3916 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
3917 return count_nextlong(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3918 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
3919 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3920
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3921 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3922 count_repr(countobject *lz)
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3923 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3924 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
3925 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
3926
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3927 if (PyLong_Check(lz->long_step)) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3928 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
3929 if (step == -1 && PyErr_Occurred()) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3930 PyErr_Clear();
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3931 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3932 if (step == 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3933 /* 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
3934 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
3935 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3936 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3937 return PyUnicode_FromFormat("count(%R, %R)",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3938 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
3939 }
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
3940
57525
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3941 static PyObject *
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3942 count_reduce(countobject *lz)
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3943 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3944 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
3945 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
3946 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
3947 }
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3948
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3949 static PyMethodDef count_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3950 {"__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
3951 reduce_doc},
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3952 {NULL, NULL} /* sentinel */
57525
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3953 };
0a6137944e61 Issue #7410: deepcopy of itertools.count was resetting the count.
Raymond Hettinger <python@rcn.com>
parents: 57344
diff changeset
3954
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3955 PyDoc_STRVAR(count_doc,
62239
8319ca0d5434 Merged revisions 81889 via svnmerge from
Ezio Melotti <ezio.melotti@gmail.com>
parents: 61466
diff changeset
3956 "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
3957 \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
3958 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
3959 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
3960 def count(firstval=0, step=1):\n\
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3961 x = firstval\n\
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3962 while 1:\n\
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3963 yield x\n\
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3964 x += step\n");
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
3965
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
3966 static PyTypeObject count_type = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3967 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3968 "itertools.count", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3969 sizeof(countobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3970 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3971 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3972 (destructor)count_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3973 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3974 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3975 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3976 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3977 (reprfunc)count_repr, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3978 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3979 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3980 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3981 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3982 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3983 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3984 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3985 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3986 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3987 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
3988 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3989 count_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3990 (traverseproc)count_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3991 0, /* tp_clear */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3992 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3993 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3994 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3995 (iternextfunc)count_next, /* tp_iternext */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3996 count_methods, /* tp_methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3997 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3998 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
3999 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4000 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4001 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4002 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4003 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4004 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4005 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4006 count_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4007 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4008 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4009
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4010
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4011 /* repeat object ************************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4012
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4013 typedef struct {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4014 PyObject_HEAD
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4015 PyObject *element;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4016 Py_ssize_t cnt;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4017 } repeatobject;
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4018
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
4019 static PyTypeObject repeat_type;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4020
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4021 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4022 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
4023 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4024 repeatobject *ro;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4025 PyObject *element;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4026 Py_ssize_t cnt = -1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4027 static char *kwargs[] = {"object", "times", NULL};
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4028
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4029 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
4030 &element, &cnt))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4031 return NULL;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4032
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4033 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
4034 cnt = 0;
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parents: 57525
diff changeset
4035
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4036 ro = (repeatobject *)type->tp_alloc(type, 0);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4037 if (ro == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4038 return NULL;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4039 Py_INCREF(element);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4040 ro->element = element;
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parents: 57525
diff changeset
4041 ro->cnt = cnt;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4042 return (PyObject *)ro;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4043 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4044
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4045 static void
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4046 repeat_dealloc(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4047 {
61466
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diff changeset
4048 PyObject_GC_UnTrack(ro);
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parents: 57525
diff changeset
4049 Py_XDECREF(ro->element);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4050 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
4051 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4052
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4053 static int
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4054 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
4055 {
61466
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parents: 57525
diff changeset
4056 Py_VISIT(ro->element);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4057 return 0;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4058 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4059
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4060 static PyObject *
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4061 repeat_next(repeatobject *ro)
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4062 {
61466
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diff changeset
4063 if (ro->cnt == 0)
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diff changeset
4064 return NULL;
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diff changeset
4065 if (ro->cnt > 0)
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diff changeset
4066 ro->cnt--;
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parents: 57525
diff changeset
4067 Py_INCREF(ro->element);
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diff changeset
4068 return ro->element;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4069 }
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4070
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4071 static PyObject *
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4072 repeat_repr(repeatobject *ro)
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4073 {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4074 if (ro->cnt == -1)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4075 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
4076 else
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4077 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
4078 }
31890
848bce2215d3 Provide more information representations of repeat() and count().
Raymond Hettinger <python@rcn.com>
parents: 31675
diff changeset
4079
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
4080 static PyObject *
31501
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4081 repeat_len(repeatobject *ro)
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4082 {
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4083 if (ro->cnt == -1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4084 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
4085 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4086 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4087 return PyLong_FromSize_t(ro->cnt);
31501
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4088 }
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4089
36484
20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See:
Armin Rigo <arigo@tunes.org>
parents: 36324
diff changeset
4090 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
4091
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4092 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4093 repeat_reduce(repeatobject *ro)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4094 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4095 /* 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
4096 * 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
4097 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4098 if (ro->cnt >= 0)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4099 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
4100 else
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4101 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
4102 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4103
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
4104 static PyMethodDef repeat_methods[] = {
61466
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parents: 57525
diff changeset
4105 {"__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
4106 {"__reduce__", (PyCFunction)repeat_reduce, METH_NOARGS, reduce_doc},
61466
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diff changeset
4107 {NULL, NULL} /* sentinel */
31501
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4108 };
14f860b03be2 Give itertools.repeat() a length method.
Raymond Hettinger <python@rcn.com>
parents: 31136
diff changeset
4109
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4110 PyDoc_STRVAR(repeat_doc,
51719
3dbdbc5e6d85 Add keyword arg support to itertools.repeat().
Raymond Hettinger <python@rcn.com>
parents: 51717
diff changeset
4111 "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
4112 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
4113 endlessly.");
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4114
29850
45dc33433323 SF patch #770521: make itertools type declarations static
Raymond Hettinger <python@rcn.com>
parents: 29535
diff changeset
4115 static PyTypeObject repeat_type = {
61466
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diff changeset
4116 PyVarObject_HEAD_INIT(NULL, 0)
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diff changeset
4117 "itertools.repeat", /* tp_name */
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parents: 57525
diff changeset
4118 sizeof(repeatobject), /* tp_basicsize */
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parents: 57525
diff changeset
4119 0, /* tp_itemsize */
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parents: 57525
diff changeset
4120 /* methods */
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parents: 57525
diff changeset
4121 (destructor)repeat_dealloc, /* tp_dealloc */
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parents: 57525
diff changeset
4122 0, /* tp_print */
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parents: 57525
diff changeset
4123 0, /* tp_getattr */
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parents: 57525
diff changeset
4124 0, /* tp_setattr */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4125 0, /* tp_reserved */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4126 (reprfunc)repeat_repr, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4127 0, /* tp_as_number */
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parents: 57525
diff changeset
4128 0, /* tp_as_sequence */
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parents: 57525
diff changeset
4129 0, /* tp_as_mapping */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4130 0, /* tp_hash */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4131 0, /* tp_call */
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parents: 57525
diff changeset
4132 0, /* tp_str */
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parents: 57525
diff changeset
4133 PyObject_GenericGetAttr, /* tp_getattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4134 0, /* tp_setattro */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4135 0, /* tp_as_buffer */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4136 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
4137 Py_TPFLAGS_BASETYPE, /* tp_flags */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4138 repeat_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4139 (traverseproc)repeat_traverse, /* tp_traverse */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4140 0, /* tp_clear */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4141 0, /* tp_richcompare */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4142 0, /* tp_weaklistoffset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4143 PyObject_SelfIter, /* tp_iter */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4144 (iternextfunc)repeat_next, /* tp_iternext */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4145 repeat_methods, /* tp_methods */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4146 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4147 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4148 0, /* tp_base */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4149 0, /* tp_dict */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4150 0, /* tp_descr_get */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4151 0, /* tp_descr_set */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4152 0, /* tp_dictoffset */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4153 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4154 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4155 repeat_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4156 PyObject_GC_Del, /* tp_free */
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4157 };
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4158
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4159 /* ziplongest object ************************************************************/
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4160
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4161 #include "Python.h"
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4162
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4163 typedef struct {
61466
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diff changeset
4164 PyObject_HEAD
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parents: 57525
diff changeset
4165 Py_ssize_t tuplesize;
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parents: 57525
diff changeset
4166 Py_ssize_t numactive;
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parents: 57525
diff changeset
4167 PyObject *ittuple; /* tuple of iterators */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4168 PyObject *result;
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parents: 57525
diff changeset
4169 PyObject *fillvalue;
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4170 } ziplongestobject;
40893
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Thomas Wouters <thomas@python.org>
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diff changeset
4171
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4172 static PyTypeObject ziplongest_type;
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4173
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4174 static PyObject *
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4175 zip_longest_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
40893
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Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4176 {
61466
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diff changeset
4177 ziplongestobject *lz;
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parents: 57525
diff changeset
4178 Py_ssize_t i;
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parents: 57525
diff changeset
4179 PyObject *ittuple; /* tuple of iterators */
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parents: 57525
diff changeset
4180 PyObject *result;
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parents: 57525
diff changeset
4181 PyObject *fillvalue = Py_None;
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parents: 57525
diff changeset
4182 Py_ssize_t tuplesize = PySequence_Length(args);
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parents: 57525
diff changeset
4183
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diff changeset
4184 if (kwds != NULL && PyDict_CheckExact(kwds) && PyDict_Size(kwds) > 0) {
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diff changeset
4185 fillvalue = PyDict_GetItemString(kwds, "fillvalue");
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diff changeset
4186 if (fillvalue == NULL || PyDict_Size(kwds) > 1) {
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parents: 57525
diff changeset
4187 PyErr_SetString(PyExc_TypeError,
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diff changeset
4188 "zip_longest() got an unexpected keyword argument");
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diff changeset
4189 return NULL;
40893
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diff changeset
4190 }
61466
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diff changeset
4191 }
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diff changeset
4192
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diff changeset
4193 /* args must be a tuple */
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diff changeset
4194 assert(PyTuple_Check(args));
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diff changeset
4195
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diff changeset
4196 /* obtain iterators */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4197 ittuple = PyTuple_New(tuplesize);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4198 if (ittuple == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4199 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4200 for (i=0; i < tuplesize; ++i) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4201 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
4202 PyObject *it = PyObject_GetIter(item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4203 if (it == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4204 if (PyErr_ExceptionMatches(PyExc_TypeError))
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4205 PyErr_Format(PyExc_TypeError,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4206 "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
4207 i+1);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4208 Py_DECREF(ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4209 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4210 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4211 PyTuple_SET_ITEM(ittuple, i, it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4212 }
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 /* create a result holder */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4215 result = PyTuple_New(tuplesize);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4216 if (result == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4217 Py_DECREF(ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4218 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4219 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4220 for (i=0 ; i < tuplesize ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4221 Py_INCREF(Py_None);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4222 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
4223 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4224
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4225 /* create ziplongestobject structure */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4226 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
4227 if (lz == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4228 Py_DECREF(ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4229 Py_DECREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4230 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4231 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4232 lz->ittuple = ittuple;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4233 lz->tuplesize = tuplesize;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4234 lz->numactive = tuplesize;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4235 lz->result = result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4236 Py_INCREF(fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4237 lz->fillvalue = fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4238 return (PyObject *)lz;
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4239 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4240
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4241 static void
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4242 zip_longest_dealloc(ziplongestobject *lz)
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4243 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4244 PyObject_GC_UnTrack(lz);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4245 Py_XDECREF(lz->ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4246 Py_XDECREF(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4247 Py_XDECREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4248 Py_TYPE(lz)->tp_free(lz);
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4249 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4250
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4251 static int
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4252 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
4253 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4254 Py_VISIT(lz->ittuple);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4255 Py_VISIT(lz->result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4256 Py_VISIT(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4257 return 0;
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4258 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4259
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4260 static PyObject *
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4261 zip_longest_next(ziplongestobject *lz)
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4262 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4263 Py_ssize_t i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4264 Py_ssize_t tuplesize = lz->tuplesize;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4265 PyObject *result = lz->result;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4266 PyObject *it;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4267 PyObject *item;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4268 PyObject *olditem;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4269
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4270 if (tuplesize == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4271 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4272 if (lz->numactive == 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4273 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4274 if (Py_REFCNT(result) == 1) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4275 Py_INCREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4276 for (i=0 ; i < tuplesize ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4277 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
4278 if (it == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4279 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4280 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4281 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4282 item = PyIter_Next(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4283 if (item == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4284 lz->numactive -= 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4285 if (lz->numactive == 0 || PyErr_Occurred()) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4286 lz->numactive = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4287 Py_DECREF(result);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4288 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4289 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4290 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4291 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4292 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
4293 Py_DECREF(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4294 }
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4295 }
61466
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parents: 57525
diff changeset
4296 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4297 olditem = PyTuple_GET_ITEM(result, i);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4298 PyTuple_SET_ITEM(result, i, item);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4299 Py_DECREF(olditem);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4300 }
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parents: 57525
diff changeset
4301 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4302 result = PyTuple_New(tuplesize);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4303 if (result == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4304 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4305 for (i=0 ; i < tuplesize ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4306 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
4307 if (it == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4308 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4309 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4310 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4311 item = PyIter_Next(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4312 if (item == NULL) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4313 lz->numactive -= 1;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4314 if (lz->numactive == 0 || PyErr_Occurred()) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4315 lz->numactive = 0;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4316 Py_DECREF(result);
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4317 return NULL;
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4318 } else {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4319 Py_INCREF(lz->fillvalue);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4320 item = lz->fillvalue;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4321 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
4322 Py_DECREF(it);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4323 }
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4324 }
61466
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parents: 57525
diff changeset
4325 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4326 PyTuple_SET_ITEM(result, i, item);
57042
658eb58d2e68 Fix exception handling in itertools.izip_longest().
Raymond Hettinger <python@rcn.com>
parents: 54839
diff changeset
4327 }
61466
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diff changeset
4328 }
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parents: 57525
diff changeset
4329 return result;
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4330 }
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4331
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4332 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4333 zip_longest_reduce(ziplongestobject *lz)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4334 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4335
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4336 /* 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
4337 * 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
4338 */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4339 int i;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4340 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
4341 if (args == NULL)
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4342 return NULL;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4343 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
4344 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
4345 if (elem == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4346 elem = PyTuple_New(0);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4347 if (elem == NULL) {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4348 Py_DECREF(args);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4349 return NULL;
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 } else
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4352 Py_INCREF(elem);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4353 PyTuple_SET_ITEM(args, i, elem);
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 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
4356 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4357
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4358 static PyObject *
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4359 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
4360 {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4361 Py_CLEAR(lz->fillvalue);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4362 lz->fillvalue = state;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4363 Py_INCREF(lz->fillvalue);
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4364 Py_RETURN_NONE;
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4365 }
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4366
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4367 static PyMethodDef zip_longest_methods[] = {
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4368 {"__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
4369 reduce_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4370 {"__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
4371 setstate_doc},
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4372 {NULL, NULL} /* sentinel */
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4373 };
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4374
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4375 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
4376 "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
4377 \n\
45736
7752a57f9c49 Rename ifilterfalse() to filterfalse() and izip_longest() to zip_longest().
Raymond Hettinger <python@rcn.com>
parents: 45735
diff changeset
4378 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
4379 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
4380 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
4381 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
4382 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
4383 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
4384 ");
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4385
45738
740b5808c57a Move itertools izip() code to builtins as zip(). Complete the renaming.
Raymond Hettinger <python@rcn.com>
parents: 45736
diff changeset
4386 static PyTypeObject ziplongest_type = {
61466
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parents: 57525
diff changeset
4387 PyVarObject_HEAD_INIT(NULL, 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
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parents: 57525
diff changeset
4388 "itertools.zip_longest", /* tp_name */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4389 sizeof(ziplongestobject), /* tp_basicsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4390 0, /* tp_itemsize */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4391 /* methods */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4392 (destructor)zip_longest_dealloc, /* tp_dealloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4393 0, /* tp_print */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4394 0, /* tp_getattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4395 0, /* tp_setattr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4396 0, /* tp_reserved */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4397 0, /* tp_repr */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4398 0, /* tp_as_number */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4399 0, /* tp_as_sequence */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4400 0, /* tp_as_mapping */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4401 0, /* tp_hash */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4402 0, /* tp_call */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4403 0, /* tp_str */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4404 PyObject_GenericGetAttr, /* tp_getattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4405 0, /* tp_setattro */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4406 0, /* tp_as_buffer */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4407 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
4408 Py_TPFLAGS_BASETYPE, /* tp_flags */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4409 zip_longest_doc, /* tp_doc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4410 (traverseproc)zip_longest_traverse, /* tp_traverse */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4411 0, /* tp_clear */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4412 0, /* tp_richcompare */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4413 0, /* tp_weaklistoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4414 PyObject_SelfIter, /* tp_iter */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4415 (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
4416 zip_longest_methods, /* tp_methods */
61466
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4417 0, /* tp_members */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4418 0, /* tp_getset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4419 0, /* tp_base */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4420 0, /* tp_dict */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4421 0, /* tp_descr_get */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4422 0, /* tp_descr_set */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4423 0, /* tp_dictoffset */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4424 0, /* tp_init */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4425 0, /* tp_alloc */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4426 zip_longest_new, /* tp_new */
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4427 PyObject_GC_Del, /* tp_free */
40893
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from
Thomas Wouters <thomas@python.org>
parents: 40737
diff changeset
4428 };
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4429
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4430 /* module level code ********************************************************/
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4431
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4432 PyDoc_STRVAR(module_doc,
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4433 "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
4434 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4435 Infinite iterators:\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4436 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
4437 cycle(p) --> p0, p1, ... plast, p0, p1, ...\n\
28601
58db5fbd9c28 Fix docstring typo
Andrew M. Kuchling <amk@amk.ca>
parents: 28320
diff changeset
4438 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
4439 \n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4440 Iterators terminating on the shortest input sequence:\n\
69022
822c7c0d27d1 Update docstrings for itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 69021
diff changeset
4441 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
4442 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
4443 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
4444 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
4445 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
4446 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
4447 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
4448 seq[start:stop:step]\n\
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4449 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
4450 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
4451 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
4452 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
4453 \n\
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4454 Combinatoric generators:\n\
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4455 product(p, q, ... [repeat=1]) --> cartesian product\n\
4b8976ea6966 Fix typo.
Raymond Hettinger <python@rcn.com>
parents: 51163
diff changeset
4456 permutations(p[, r])\n\
57344
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
parents: 57042
diff changeset
4457 combinations(p, r)\n\
a790f84fbafa Fix docstrings for itertools combinatoric functions.
Raymond Hettinger <python@rcn.com>
parents: 57042
diff changeset
4458 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
4459 ");
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4460
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4461
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
4462 static PyMethodDef module_methods[] = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4463 {"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
4464 {NULL, NULL} /* sentinel */
30900
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
4465 };
3096fab2a19c Improve the implementation of itertools.tee().
Raymond Hettinger <python@rcn.com>
parents: 30800
diff changeset
4466
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4467
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4468 static struct PyModuleDef itertoolsmodule = {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4469 PyModuleDef_HEAD_INIT,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4470 "itertools",
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4471 module_doc,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4472 -1,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4473 module_methods,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4474 NULL,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4475 NULL,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4476 NULL,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4477 NULL
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4478 };
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4479
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4480 PyMODINIT_FUNC
47580
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
Martin v. Löwis <martin@v.loewis.de>
parents: 47555
diff changeset
4481 PyInit_itertools(void)
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4482 {
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4483 int i;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4484 PyObject *m;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4485 char *name;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4486 PyTypeObject *typelist[] = {
66589
5da093b49c2a Add itertools.accumulate().
Raymond Hettinger <python@rcn.com>
parents: 66546
diff changeset
4487 &accumulate_type,
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4488 &combinations_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4489 &cwr_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4490 &cycle_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4491 &dropwhile_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4492 &takewhile_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4493 &islice_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4494 &starmap_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4495 &chain_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4496 &compress_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4497 &filterfalse_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4498 &count_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4499 &ziplongest_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4500 &permutations_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4501 &product_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4502 &repeat_type,
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4503 &groupby_type,
76091
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4504 &_grouper_type,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4505 &tee_type,
4ff234337e24 Issue #14288: Serialization support for builtin iterators.
Kristján Valur Jónsson <kristjan@ccpgames.com>
parents: 72926
diff changeset
4506 &teedataobject_type,
61466
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4507 NULL
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4508 };
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4509
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4510 Py_TYPE(&teedataobject_type) = &PyType_Type;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4511 m = PyModule_Create(&itertoolsmodule);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4512 if (m == NULL)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4513 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4514
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4515 for (i=0 ; typelist[i] != NULL ; i++) {
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4516 if (PyType_Ready(typelist[i]) < 0)
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4517 return NULL;
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4518 name = strchr(typelist[i]->tp_name, '.');
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4519 assert (name != NULL);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4520 Py_INCREF(typelist[i]);
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4521 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
4522 }
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4523
cab14be0ada1 Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57525
diff changeset
4524 return m;
27570
ba57c3daf6e9 Move itertools module from the sandbox and into production.
Raymond Hettinger <python@rcn.com>
parents:
diff changeset
4525 }