Mercurial > cpython-lru_cache-weakref

annotate Modules/_weakref.c @ 66978:aed2bbafa550 3.1

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Blocked revisions 87324 via svnmerge ........ r87324 | r.david.murray | 2010-12-16 14:08:51 -0500 (Thu, 16 Dec 2010) | 9 lines #10719: restore messages generated on invalid compileall args Before the introduction of filename arguments to compileall it gave semi useful messages about not being able to 'list' names that weren't valid directories. This fix restores that behavior. In addition to the test for this case, the patch also adds a test for the default behavior of compileall when no arguments are provided, and fixes a bug in one of the previously added tests. ........
author R. David Murray <rdmurray@bitdance.com>
date Thu, 16 Dec 2010 19:10:16 +0000
parents 94f64f11fdd0
children 8fde1a2c94dc
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1 #include "Python.h"
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2
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3
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4 #define GET_WEAKREFS_LISTPTR(o) \
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5 ((PyWeakReference **) PyObject_GET_WEAKREFS_LISTPTR(o))
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6
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7
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8 PyDoc_STRVAR(weakref_getweakrefcount__doc__,
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9 "getweakrefcount(object) -- return the number of weak references\n"
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10 "to 'object'.");
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11
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12 static PyObject *
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13 weakref_getweakrefcount(PyObject *self, PyObject *object)
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14 {
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15 PyObject *result = NULL;
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16
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17 if (PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
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18 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
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19
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20 result = PyLong_FromSsize_t(_PyWeakref_GetWeakrefCount(*list));
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21 }
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22 else
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23 result = PyLong_FromLong(0);
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24
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25 return result;
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26 }
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29 PyDoc_STRVAR(weakref_getweakrefs__doc__,
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30 "getweakrefs(object) -- return a list of all weak reference objects\n"
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31 "that point to 'object'.");
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33 static PyObject *
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34 weakref_getweakrefs(PyObject *self, PyObject *object)
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35 {
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36 PyObject *result = NULL;
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37
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38 if (PyType_SUPPORTS_WEAKREFS(Py_TYPE(object))) {
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39 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
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40 Py_ssize_t count = _PyWeakref_GetWeakrefCount(*list);
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41
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42 result = PyList_New(count);
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43 if (result != NULL) {
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44 PyWeakReference *current = *list;
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45 Py_ssize_t i;
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46 for (i = 0; i < count; ++i) {
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47 PyList_SET_ITEM(result, i, (PyObject *) current);
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48 Py_INCREF(current);
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49 current = current->wr_next;
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50 }
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51 }
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52 }
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53 else {
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54 result = PyList_New(0);
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55 }
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56 return result;
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57 }
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58
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60 PyDoc_STRVAR(weakref_proxy__doc__,
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61 "proxy(object[, callback]) -- create a proxy object that weakly\n"
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62 "references 'object'. 'callback', if given, is called with a\n"
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63 "reference to the proxy when 'object' is about to be finalized.");
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64
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65 static PyObject *
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66 weakref_proxy(PyObject *self, PyObject *args)
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67 {
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68 PyObject *object;
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69 PyObject *callback = NULL;
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70 PyObject *result = NULL;
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71
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72 if (PyArg_UnpackTuple(args, "proxy", 1, 2, &object, &callback)) {
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73 result = PyWeakref_NewProxy(object, callback);
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74 }
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75 return result;
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76 }
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77
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78
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79 static PyMethodDef
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80 weakref_functions[] = {
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81 {"getweakrefcount", weakref_getweakrefcount, METH_O,
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82 weakref_getweakrefcount__doc__},
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83 {"getweakrefs", weakref_getweakrefs, METH_O,
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84 weakref_getweakrefs__doc__},
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85 {"proxy", weakref_proxy, METH_VARARGS,
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86 weakref_proxy__doc__},
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87 {NULL, NULL, 0, NULL}
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88 };
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89
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90
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91 static struct PyModuleDef weakrefmodule = {
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92 PyModuleDef_HEAD_INIT,
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93 "_weakref",
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94 "Weak-reference support module.",
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95 -1,
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96 weakref_functions,
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97 NULL,
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98 NULL,
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99 NULL,
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100 NULL
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101 };
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102
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103 PyMODINIT_FUNC
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104 PyInit__weakref(void)
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105 {
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106 PyObject *m;
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107
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108 m = PyModule_Create(&weakrefmodule);
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109
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110 if (m != NULL) {
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111 Py_INCREF(&_PyWeakref_RefType);
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112 PyModule_AddObject(m, "ref",
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113 (PyObject *) &_PyWeakref_RefType);
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114 Py_INCREF(&_PyWeakref_RefType);
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115 PyModule_AddObject(m, "ReferenceType",
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116 (PyObject *) &_PyWeakref_RefType);
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117 Py_INCREF(&_PyWeakref_ProxyType);
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118 PyModule_AddObject(m, "ProxyType",
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119 (PyObject *) &_PyWeakref_ProxyType);
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120 Py_INCREF(&_PyWeakref_CallableProxyType);
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121 PyModule_AddObject(m, "CallableProxyType",
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122 (PyObject *) &_PyWeakref_CallableProxyType);
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123 }
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124 return m;
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125 }