Mercurial > cpython-lru_cache-weakref

annotate Objects/stringlib/partition.h @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents b36cb4602e21
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* stringlib: partition implementation */
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2
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3 #ifndef STRINGLIB_PARTITION_H
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4 #define STRINGLIB_PARTITION_H
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5
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6 #ifndef STRINGLIB_FASTSEARCH_H
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7 #error must include "stringlib/fastsearch.h" before including this module
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8 #endif
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9
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10 Py_LOCAL_INLINE(PyObject*)
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11 stringlib_partition(PyObject* str_obj,
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12 const STRINGLIB_CHAR* str, Py_ssize_t str_len,
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13 PyObject* sep_obj,
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14 const STRINGLIB_CHAR* sep, Py_ssize_t sep_len)
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15 {
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16 PyObject* out;
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17 Py_ssize_t pos;
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18
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19 if (sep_len == 0) {
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20 PyErr_SetString(PyExc_ValueError, "empty separator");
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21 return NULL;
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22 }
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23
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24 out = PyTuple_New(3);
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25 if (!out)
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26 return NULL;
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27
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28 pos = fastsearch(str, str_len, sep, sep_len, -1, FAST_SEARCH);
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29
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30 if (pos < 0) {
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31 #if STRINGLIB_MUTABLE
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32 PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(str, str_len));
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33 PyTuple_SET_ITEM(out, 1, STRINGLIB_NEW(NULL, 0));
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34 PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(NULL, 0));
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35 #else
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36 Py_INCREF(str_obj);
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37 PyTuple_SET_ITEM(out, 0, (PyObject*) str_obj);
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38 Py_INCREF(STRINGLIB_EMPTY);
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39 PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
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40 Py_INCREF(STRINGLIB_EMPTY);
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41 PyTuple_SET_ITEM(out, 2, (PyObject*) STRINGLIB_EMPTY);
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42 #endif
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43 return out;
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44 }
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45
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46 PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(str, pos));
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47 Py_INCREF(sep_obj);
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48 PyTuple_SET_ITEM(out, 1, sep_obj);
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49 pos += sep_len;
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50 PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(str + pos, str_len - pos));
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51
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52 if (PyErr_Occurred()) {
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53 Py_DECREF(out);
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54 return NULL;
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55 }
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56
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57 return out;
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58 }
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59
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60 Py_LOCAL_INLINE(PyObject*)
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61 stringlib_rpartition(PyObject* str_obj,
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62 const STRINGLIB_CHAR* str, Py_ssize_t str_len,
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63 PyObject* sep_obj,
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64 const STRINGLIB_CHAR* sep, Py_ssize_t sep_len)
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65 {
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66 PyObject* out;
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67 Py_ssize_t pos;
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68
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69 if (sep_len == 0) {
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70 PyErr_SetString(PyExc_ValueError, "empty separator");
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71 return NULL;
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72 }
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73
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74 out = PyTuple_New(3);
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75 if (!out)
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76 return NULL;
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77
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78 pos = fastsearch(str, str_len, sep, sep_len, -1, FAST_RSEARCH);
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79
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80 if (pos < 0) {
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81 #if STRINGLIB_MUTABLE
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82 PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(NULL, 0));
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83 PyTuple_SET_ITEM(out, 1, STRINGLIB_NEW(NULL, 0));
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84 PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(str, str_len));
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85 #else
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86 Py_INCREF(STRINGLIB_EMPTY);
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87 PyTuple_SET_ITEM(out, 0, (PyObject*) STRINGLIB_EMPTY);
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88 Py_INCREF(STRINGLIB_EMPTY);
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89 PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
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90 Py_INCREF(str_obj);
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91 PyTuple_SET_ITEM(out, 2, (PyObject*) str_obj);
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92 #endif
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93 return out;
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94 }
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95
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96 PyTuple_SET_ITEM(out, 0, STRINGLIB_NEW(str, pos));
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97 Py_INCREF(sep_obj);
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98 PyTuple_SET_ITEM(out, 1, sep_obj);
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99 pos += sep_len;
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100 PyTuple_SET_ITEM(out, 2, STRINGLIB_NEW(str + pos, str_len - pos));
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101
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102 if (PyErr_Occurred()) {
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103 Py_DECREF(out);
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104 return NULL;
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105 }
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106
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107 return out;
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108 }
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109
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110 #endif