Mercurial > cpython-lru_cache-weakref

annotate Objects/rangeobject.c @ 19283:b865cd5c1925 legacy-trunk

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Added comments before recently added/assigned slots in the type object, so the backward compatibility issues will be easier to understand. I only added comments indicating additions and assignments back to Python 2.0.
author Fred Drake <fdrake@acm.org>
date Wed, 15 Aug 2001 18:32:33 +0000
parents 09df3254b49d
children b9701538f827
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 /* Range object implementation */
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3
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4 #include "Python.h"
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5 #include "structmember.h"
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6 #include <string.h>
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7
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8 #define WARN(msg) if (PyErr_Warn(PyExc_DeprecationWarning, msg) < 0) \
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9 return NULL;
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10
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11 typedef struct {
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12 PyObject_HEAD
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13 long start;
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14 long step;
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15 long len;
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16 int reps;
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17 long totlen;
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18 } rangeobject;
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19
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20 static int
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21 long_mul(long i, long j, long *kk)
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22 {
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23 PyObject *a;
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24 PyObject *b;
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25 PyObject *c;
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26
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27 if ((a = PyInt_FromLong(i)) == NULL)
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28 return 0;
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29
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30 if ((b = PyInt_FromLong(j)) == NULL)
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31 return 0;
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32
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33 c = PyNumber_Multiply(a, b);
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34
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35 Py_DECREF(a);
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36 Py_DECREF(b);
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37
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38 if (c == NULL)
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39 return 0;
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40
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41 *kk = PyInt_AS_LONG(c);
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42 Py_DECREF(c);
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43
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44 if (*kk > INT_MAX) {
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45 PyErr_SetString(PyExc_OverflowError,
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46 "integer multiplication");
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47 return 0;
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48 }
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49 else
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50 return 1;
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51 }
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52
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53 PyObject *
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54 PyRange_New(long start, long len, long step, int reps)
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55 {
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56 long totlen = -1;
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57 rangeobject *obj = PyObject_NEW(rangeobject, &PyRange_Type);
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58
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59 if (obj == NULL)
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60 return NULL;
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61
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62 if (reps != 1)
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63 WARN("PyRange_New's 'repetitions' argument is deprecated");
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64
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65 if (len == 0 || reps <= 0) {
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66 start = 0;
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67 len = 0;
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68 step = 1;
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69 reps = 1;
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70 totlen = 0;
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71 }
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72 else {
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73 long last = start + (len - 1) * step;
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74 if ((step > 0) ?
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75 (last > (PyInt_GetMax() - step)) :
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76 (last < (-1 - PyInt_GetMax() - step))) {
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77 PyErr_SetString(PyExc_OverflowError,
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78 "integer addition");
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79 return NULL;
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80 }
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81 if (! long_mul(len, (long) reps, &totlen)) {
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82 if(!PyErr_ExceptionMatches(PyExc_OverflowError))
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83 return NULL;
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84 PyErr_Clear();
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85 totlen = -1;
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86 }
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87 }
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88
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89 obj->start = start;
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90 obj->len = len;
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91 obj->step = step;
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92 obj->reps = reps;
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93 obj->totlen = totlen;
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94
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95 return (PyObject *) obj;
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96 }
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97
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98 static void
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99 range_dealloc(rangeobject *r)
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100 {
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101 PyObject_DEL(r);
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102 }
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103
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104 static PyObject *
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105 range_item(rangeobject *r, int i)
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106 {
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107 if (i < 0 || i >= r->totlen)
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108 if (r->totlen!=-1) {
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109 PyErr_SetString(PyExc_IndexError,
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110 "xrange object index out of range");
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111 return NULL;
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112 }
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113
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114 return PyInt_FromLong(r->start + (i % r->len) * r->step);
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115 }
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116
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117 static int
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118 range_length(rangeobject *r)
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119 {
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120 if (r->totlen == -1)
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121 PyErr_SetString(PyExc_OverflowError,
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122 "xrange object has too many items");
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123 return r->totlen;
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124 }
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125
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126 static PyObject *
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127 range_repr(rangeobject *r)
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128 {
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129 /* buffers must be big enough to hold 3 longs + an int +
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130 * a bit of "(xrange(...) * ...)" text.
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131 */
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132 char buf1[250];
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133 char buf2[250];
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134
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135 if (r->start == 0 && r->step == 1)
13847
a55e4883f886 snprintf() is not portable, so continue to use sprintf() until a portable
Fred Drake <fdrake@acm.org>
parents: 13836
diff changeset
136 sprintf(buf1, "xrange(%ld)", r->start + r->len * r->step);
13848
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
137
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
138 else if (r->step == 1)
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
139 sprintf(buf1, "xrange(%ld, %ld)",
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
140 r->start,
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
141 r->start + r->len * r->step);
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
142
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
143 else
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
144 sprintf(buf1, "xrange(%ld, %ld, %ld)",
13847
a55e4883f886 snprintf() is not portable, so continue to use sprintf() until a portable
Fred Drake <fdrake@acm.org>
parents: 13836
diff changeset
145 r->start,
a55e4883f886 snprintf() is not portable, so continue to use sprintf() until a portable
Fred Drake <fdrake@acm.org>
parents: 13836
diff changeset
146 r->start + r->len * r->step,
a55e4883f886 snprintf() is not portable, so continue to use sprintf() until a portable
Fred Drake <fdrake@acm.org>
parents: 13836
diff changeset
147 r->step);
13848
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
148
18436
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
149 if (r->reps != 1)
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parents: 18391
diff changeset
150 sprintf(buf2, "(%s * %d)", buf1, r->reps);
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parents: 18391
diff changeset
151
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
152 return PyString_FromString(r->reps == 1 ? buf1 : buf2);
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parents: 18391
diff changeset
153 }
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parents: 18391
diff changeset
154
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
155 static PyObject *
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
156 range_repeat(rangeobject *r, int n)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
157 {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
158 long lreps = 0;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
159
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
160 WARN("xrange object multiplication is deprecated; "
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
161 "convert to list instead");
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Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
162
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
163 if (n <= 0)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
164 return (PyObject *) PyRange_New(0, 0, 1, 1);
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
165
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
166 else if (n == 1) {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
167 Py_INCREF(r);
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
168 return (PyObject *) r;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
169 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
170
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
171 else if (! long_mul((long) r->reps, (long) n, &lreps))
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
172 return NULL;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
173
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
174 else
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
175 return (PyObject *) PyRange_New(
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
176 r->start,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
177 r->len,
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Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
178 r->step,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
179 (int) lreps);
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
180 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
181
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
182 static int
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Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
183 range_compare(rangeobject *r1, rangeobject *r2)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
184 {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
185
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
186 if (PyErr_Warn(PyExc_DeprecationWarning,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
187 "xrange object comparision is deprecated; "
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
188 "convert to list instead") < 0)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
189 return -1;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
190
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
191 if (r1->start != r2->start)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
192 return r1->start - r2->start;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
193
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
194 else if (r1->step != r2->step)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
195 return r1->step - r2->step;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
196
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
197 else if (r1->len != r2->len)
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parents: 18391
diff changeset
198 return r1->len - r2->len;
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parents: 18391
diff changeset
199
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
200 else
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parents: 18391
diff changeset
201 return r1->reps - r2->reps;
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Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
202 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
203
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
204 static PyObject *
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
205 range_slice(rangeobject *r, int low, int high)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
206 {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
207 WARN("xrange object slicing is deprecated; "
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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parents: 18391
diff changeset
208 "convert to list instead");
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
209
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
210 if (r->reps != 1) {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
211 PyErr_SetString(PyExc_TypeError,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
212 "cannot slice a replicated xrange");
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
213 return NULL;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
214 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
215 if (low < 0)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
216 low = 0;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
217 else if (low > r->len)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
218 low = r->len;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
219 if (high < 0)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
220 high = 0;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
221 if (high < low)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
222 high = low;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
223 else if (high > r->len)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
224 high = r->len;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
225
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
226 if (low == 0 && high == r->len) {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
227 Py_INCREF(r);
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
228 return (PyObject *) r;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
229 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
230
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
231 return (PyObject *) PyRange_New(
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
232 low * r->step + r->start,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
233 high - low,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
234 r->step,
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
235 1);
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
236 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
237
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
238 static PyObject *
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
239 range_tolist(rangeobject *self, PyObject *args)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
240 {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
241 PyObject *thelist;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
242 int j;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
243
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
244 WARN("xrange.tolist() is deprecated; use list(xrange) instead");
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
245
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
246 if (! PyArg_ParseTuple(args, ":tolist"))
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
247 return NULL;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
248
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
249 if (self->totlen == -1)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
250 return PyErr_NoMemory();
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
251
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
252 if ((thelist = PyList_New(self->totlen)) == NULL)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
253 return NULL;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
254
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
255 for (j = 0; j < self->totlen; ++j)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
256 if ((PyList_SetItem(thelist, j, (PyObject *) PyInt_FromLong(
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
257 self->start + (j % self->len) * self->step))) < 0)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
258 return NULL;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
259
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
260 return thelist;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
261 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
262
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
263 static PyObject *
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
264 range_getattr(rangeobject *r, char *name)
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
265 {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
266 PyObject *result;
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
267
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
268 static PyMethodDef range_methods[] = {
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
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269 {"tolist", (PyCFunction)range_tolist, METH_VARARGS,
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270 "tolist() -> list\n"
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271 "Return a list object with the same values.\n"
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272 "(This method is deprecated; use list() instead.)"},
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273 {NULL, NULL}
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274 };
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275 static struct memberlist range_members[] = {
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276 {"step", T_LONG, offsetof(rangeobject, step), RO},
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277 {"start", T_LONG, offsetof(rangeobject, start), RO},
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278 {"stop", T_LONG, 0, RO},
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279 {NULL, 0, 0, 0}
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280 };
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281
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282 result = Py_FindMethod(range_methods, (PyObject *) r, name);
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283 if (result == NULL) {
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284 PyErr_Clear();
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285 if (strcmp("stop", name) == 0)
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286 result = PyInt_FromLong(r->start + (r->len * r->step));
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287 else
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288 result = PyMember_Get((char *)r, range_members, name);
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289 if (result)
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290 WARN("xrange object's 'start', 'stop' and 'step' "
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291 "attributes are deprecated");
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292 }
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293 return result;
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294 }
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295
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296 static PySequenceMethods range_as_sequence = {
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297 (inquiry)range_length, /*sq_length*/
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298 0, /*sq_concat*/
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299 (intargfunc)range_repeat, /*sq_repeat*/
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300 (intargfunc)range_item, /*sq_item*/
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301 (intintargfunc)range_slice, /*sq_slice*/
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302 0, /*sq_ass_item*/
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303 0, /*sq_ass_slice*/
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304 0, /*sq_contains*/
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305 };
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306
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307 PyTypeObject PyRange_Type = {
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308 PyObject_HEAD_INIT(&PyType_Type)
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309 0, /* Number of items for varobject */
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310 "xrange", /* Name of this type */
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311 sizeof(rangeobject), /* Basic object size */
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312 0, /* Item size for varobject */
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313 (destructor)range_dealloc, /*tp_dealloc*/
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314 0, /*tp_print*/
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315 (getattrfunc)range_getattr, /*tp_getattr*/
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316 0, /*tp_setattr*/
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317 (cmpfunc)range_compare, /*tp_compare*/
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318 (reprfunc)range_repr, /*tp_repr*/
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319 0, /*tp_as_number*/
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320 &range_as_sequence, /*tp_as_sequence*/
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321 0, /*tp_as_mapping*/
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322 0, /*tp_hash*/
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323 0, /*tp_call*/
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324 0, /*tp_str*/
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325 PyObject_GenericGetAttr, /*tp_getattro*/
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326 0, /*tp_setattro*/
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327 0, /*tp_as_buffer*/
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328 Py_TPFLAGS_DEFAULT, /*tp_flags*/
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329 0, /* tp_doc */
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330 0, /* tp_traverse */
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331 0, /* tp_clear */
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332 0, /* tp_richcompare */
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333 0, /* tp_weaklistoffset */
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334 0, /* tp_iter */
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335 0, /* tp_iternext */
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336 0, /* tp_methods */
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337 0, /* tp_members */
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338 0, /* tp_getset */
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339 0, /* tp_base */
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340 0, /* tp_dict */
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341 };
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342
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343 #undef WARN