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annotate Objects/bytesobject.c @ 37927:a7f3765ea464

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Here is a bytes type. It's very minimal but it's a start.
author Guido van Rossum <guido@python.org>
date Sat, 22 Apr 2006 23:28:04 +0000
parents
children e1252cea439c
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37927
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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1 /* Bytes object implementation */
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2
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3 /* XXX TO DO: optimizations */
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4
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5 #define PY_SSIZE_T_CLEAN
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6 #include "Python.h"
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7
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8 /* Direct API functions */
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9
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10 PyObject *
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11 PyBytes_FromStringAndSize(const char *sval, Py_ssize_t size)
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12 {
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13 PyBytesObject *new;
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14
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15 if (size != 0) {
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16 assert(sval != NULL);
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17 assert(size > 0);
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18 }
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19
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20 new = PyObject_New(PyBytesObject, &PyBytes_Type);
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21 if (new == NULL)
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22 return NULL;
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23
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24 if (size > 0) {
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25 new->ob_sval = PyMem_Malloc(size);
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26 if (new->ob_sval == NULL) {
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27 Py_DECREF(new);
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28 return NULL;
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29 }
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30 memcpy(new->ob_sval, sval, size);
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31 new->ob_size = size;
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32 }
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33
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34 return (PyObject *)new;
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35 }
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36
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37 Py_ssize_t
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38 PyBytes_Size(PyObject *self)
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39 {
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40 assert(self != NULL);
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41 assert(PyBytes_Check(self));
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42
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43 return ((PyBytesObject *)self)->ob_size;
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44 }
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45
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46 char *
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47 PyBytes_AsString(PyObject *self)
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48 {
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49 assert(self != NULL);
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50 assert(PyBytes_Check(self));
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51
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52 return ((PyBytesObject *)self)->ob_sval;
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53 }
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54
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55 int
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56 PyBytes_Resize(PyObject *self, Py_ssize_t size)
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57 {
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58 void *sval;
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59
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60 assert(self != NULL);
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61 assert(PyBytes_Check(self));
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62 assert(size >= 0);
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63
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64 sval = PyMem_Realloc(((PyBytesObject *)self)->ob_sval, size);
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65 if (sval == NULL) {
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66 PyErr_NoMemory();
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67 return -1;
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68 }
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69
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70 ((PyBytesObject *)self)->ob_sval = sval;
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71 ((PyBytesObject *)self)->ob_size = size;
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72
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73 return 0;
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74 }
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75
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76 /* Functions stuffed into the type object */
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77
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78 static Py_ssize_t
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79 bytes_length(PyBytesObject *self)
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80 {
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81 return self->ob_size;
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82 }
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83
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84 static PyObject *
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85 bytes_getitem(PyBytesObject *self, Py_ssize_t i)
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86 {
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87 if (i < 0)
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88 i += self->ob_size;
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89 if (i < 0 || i >= self->ob_size) {
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90 PyErr_SetString(PyExc_IndexError, "bytes index out of range");
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91 return NULL;
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92 }
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93 return PyInt_FromLong((unsigned char)(self->ob_sval[i]));
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94 }
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95
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96 static long
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97 bytes_nohash(PyObject *self)
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98 {
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99 PyErr_SetString(PyExc_TypeError, "bytes objects are unhashable");
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100 return -1;
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101 }
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102
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103 static int
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104 bytes_init(PyBytesObject *self, PyObject *args, PyObject *kwds)
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105 {
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106 static char *kwlist[] = {"sequence", 0};
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107 PyObject *arg = NULL;
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108 PyObject *it; /* iter(arg) */
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109 PyObject *(*iternext)(PyObject *);
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110
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111 if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O:bytes", kwlist, &arg))
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112 return -1;
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113
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114 /* Verify list invariants established by PyType_GenericAlloc() */
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115 if (self->ob_size != 0) {
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116 assert(self->ob_sval != NULL);
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117 assert(self->ob_size > 0);
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118 }
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119
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120 /* Empty previous contents */
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121 if (PyBytes_Resize((PyObject *)self, 0) < 0)
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122 return -1;
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123
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124 /* Quick check if we're done */
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125 if (arg == 0)
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126 return 0;
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127
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128 /* XXX Optimize this if the arguments is a list, tuple, or bytes */
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129
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130 /* Get the iterator */
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131 it = PyObject_GetIter(arg);
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132 if (it == NULL)
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133 return 0;
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134 iternext = *it->ob_type->tp_iternext;
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135
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136 /* Run the iterator to exhaustion */
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137 for (;;) {
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138 PyObject *item;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
139 Py_ssize_t value;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
140
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
141 /* Get the next item */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
142 item = iternext(it);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
143 if (item == NULL) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
144 if (PyErr_Occurred()) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
145 if (!PyErr_ExceptionMatches(PyExc_StopIteration))
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
146 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
147 PyErr_Clear();
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
148 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
149 break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
150 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
151
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
152 /* Interpret it as an int (__index__) */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
153 value = PyNumber_Index(item);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
154 if (value == -1 && PyErr_Occurred())
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
155 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
156
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
157 /* Range check */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
158 if (value < 0 || value >= 256) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
159 PyErr_SetString(PyExc_ValueError, "bytes must be in range(0, 256)");
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
160 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
161 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
162
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
163 /* Append the byte */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
164 /* XXX Speed this up */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
165 if (PyBytes_Resize((PyObject *)self, self->ob_size+1) < 0)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
166 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
167 self->ob_sval[self->ob_size-1] = value;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
168 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
169
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
170 /* Clean up and return success */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
171 Py_DECREF(it);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
172 return 0;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
173
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
174 error:
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
175 /* Error handling when it != NULL */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
176 Py_DECREF(it);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
177 return -1;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
178 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
179
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
180 static PyObject *
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
181 bytes_repr(PyBytesObject *self)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
182 {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
183 PyObject *list;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
184 PyObject *str;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
185 PyObject *result;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
186 int err;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
187 int i;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
188
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
189 if (self->ob_size == 0)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
190 return PyString_FromString("bytes()");
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
191
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
192 list = PyList_New(0);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
193 if (list == NULL)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
194 return NULL;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
195
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
196 str = PyString_FromString("bytes([");
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
197 if (str == NULL)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
198 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
199
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
200 err = PyList_Append(list, str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
201 Py_DECREF(str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
202 if (err < 0)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
203 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
204
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
205 for (i = 0; i < self->ob_size; i++) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
206 char buffer[20];
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
207 sprintf(buffer, ", 0x%02x", (unsigned char) (self->ob_sval[i]));
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
208 str = PyString_FromString((i == 0) ? buffer+2 : buffer);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
209 if (str == NULL)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
210 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
211 err = PyList_Append(list, str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
212 Py_DECREF(str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
213 if (err < 0)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
214 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
215 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
216
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
217 str = PyString_FromString("])");
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
218 if (str == NULL)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
219 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
220
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
221 err = PyList_Append(list, str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
222 Py_DECREF(str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
223 if (err < 0)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
224 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
225
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
226 str = PyString_FromString("");
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
227 if (str == NULL)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
228 goto error;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
229
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
230 result = _PyString_Join(str, list);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
231 Py_DECREF(str);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
232 Py_DECREF(list);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
233 return result;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
234
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
235 error:
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
236 /* Error handling when list != NULL */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
237 Py_DECREF(list);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
238 return NULL;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
239 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
240
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
241 static PyObject *
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
242 bytes_richcompare(PyBytesObject *self, PyBytesObject *other, int op)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
243 {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
244 PyObject *res;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
245 int minsize;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
246 int cmp;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
247
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
248 if (!PyBytes_Check(self) || !PyBytes_Check(other)) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
249 Py_INCREF(Py_NotImplemented);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
250 return Py_NotImplemented;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
251 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
252
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
253 if (self->ob_size != other->ob_size && (op == Py_EQ || op == Py_NE)) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
254 /* Shortcut: if the lengths differ, the objects differ */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
255 cmp = (op == Py_NE);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
256 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
257 else {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
258 minsize = self->ob_size;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
259 if (other->ob_size < minsize)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
260 minsize = other->ob_size;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
261
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
262 cmp = memcmp(self->ob_sval, other->ob_sval, minsize);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
263 /* In ISO C, memcmp() guarantees to use unsigned bytes! */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
264
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
265 if (cmp == 0) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
266 if (self->ob_size < other->ob_size)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
267 cmp = -1;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
268 else if (self->ob_size > other->ob_size)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
269 cmp = 1;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
270 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
271
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
272 switch (op) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
273 case Py_LT: cmp = cmp < 0; break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
274 case Py_LE: cmp = cmp <= 0; break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
275 case Py_EQ: cmp = cmp == 0; break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
276 case Py_NE: cmp = cmp != 0; break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
277 case Py_GT: cmp = cmp > 0; break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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278 case Py_GE: cmp = cmp >= 0; break;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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279 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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280 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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281
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282 res = cmp ? Py_True : Py_False;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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283 Py_INCREF(res);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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284 return res;
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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285 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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286
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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287 static void
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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288 bytes_dealloc(PyBytesObject *self)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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289 {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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290 if (self->ob_sval != 0) {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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291 PyMem_Free(self->ob_sval);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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292 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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293 self->ob_type->tp_free((PyObject *)self);
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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294 }
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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295
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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296 static PySequenceMethods bytes_as_sequence = {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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297 (lenfunc)bytes_length, /*sq_length*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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298 (binaryfunc)0, /*sq_concat*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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299 (ssizeargfunc)0, /*sq_repeat*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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300 (ssizeargfunc)bytes_getitem, /*sq_item*/
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301 (ssizessizeargfunc)0, /*sq_slice*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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302 0, /*sq_ass_item*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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303 0, /*sq_ass_slice*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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304 (objobjproc)0, /*sq_contains*/
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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305 };
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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306
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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307 static PyMappingMethods bytes_as_mapping = {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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308 (lenfunc)bytes_length,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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309 (binaryfunc)0,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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310 0,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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311 };
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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312
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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313 static PyBufferProcs bytes_as_buffer = {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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314 /*
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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315 (readbufferproc)bytes_buffer_getreadbuf,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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316 (writebufferproc)bytes_buffer_getwritebuf,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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317 (segcountproc)bytes_buffer_getsegcount,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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318 (charbufferproc)bytes_buffer_getcharbuf,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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319 */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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320 };
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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321
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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322 static PyMethodDef
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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323 bytes_methods[] = {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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diff changeset
324 {NULL, NULL}
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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325 };
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
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326
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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327 PyDoc_STRVAR(bytes_doc,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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328 "bytes([iterable]) -> new array of bytes.\n\
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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329 \n\
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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330 If an argument is given it must be an iterable yielding ints in range(256).");
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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331
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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332 PyTypeObject PyBytes_Type = {
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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333 PyObject_HEAD_INIT(&PyType_Type)
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
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334 0,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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335 "bytes",
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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diff changeset
336 sizeof(PyBytesObject),
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
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337 0,
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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338 (destructor)bytes_dealloc, /* tp_dealloc */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
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339 0, /* tp_print */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
340 0, /* tp_getattr */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
341 0, /* tp_setattr */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
342 0, /* tp_compare */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
343 (reprfunc)bytes_repr, /* tp_repr */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
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344 0, /* tp_as_number */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
345 &bytes_as_sequence, /* tp_as_sequence */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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346 &bytes_as_mapping, /* tp_as_mapping */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
347 bytes_nohash, /* tp_hash */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
348 0, /* tp_call */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
349 0, /* tp_str */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
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350 PyObject_GenericGetAttr, /* tp_getattro */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
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351 0, /* tp_setattro */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
352 &bytes_as_buffer, /* tp_as_buffer */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
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diff changeset
353 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_CHECKTYPES, /* tp_flags */ /* bytes is 'final' or 'sealed' */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
354 bytes_doc, /* tp_doc */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
355 0, /* tp_traverse */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
356 0, /* tp_clear */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
357 (richcmpfunc)bytes_richcompare, /* tp_richcompare */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
358 0, /* tp_weaklistoffset */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
359 0, /* tp_iter */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
360 0, /* tp_iternext */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
361 bytes_methods, /* tp_methods */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
362 0, /* tp_members */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
363 0, /* tp_getset */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
364 0, /* tp_base */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
365 0, /* tp_dict */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
366 0, /* tp_descr_get */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
367 0, /* tp_descr_set */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
368 0, /* tp_dictoffset */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
369 (initproc)bytes_init, /* tp_init */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
370 PyType_GenericAlloc, /* tp_alloc */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
371 PyType_GenericNew, /* tp_new */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
372 PyObject_Del, /* tp_free */
a7f3765ea464 Here is a bytes type. It's very minimal but it's a start.
Guido van Rossum <guido@python.org>
parents:
diff changeset
373 };