annotate mercurial/pythoncapi_compat.h @ 46414:16c18d5e5dc8

merge with stable
author Pulkit Goyal <7895pulkit@gmail.com>
date Fri, 29 Jan 2021 17:32:09 +0530
parents 38b9a63d3a13
children
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rev   line source
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1 // Header file providing new functions of the Python C API to old Python
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2 // versions.
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3 //
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4 // File distributed under the MIT license.
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5 //
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6 // Homepage:
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7 // https://github.com/pythoncapi/pythoncapi_compat
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8 //
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9 // Latest version:
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10 // https://raw.githubusercontent.com/pythoncapi/pythoncapi_compat/master/pythoncapi_compat.h
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11
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12 #ifndef PYTHONCAPI_COMPAT
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13 #define PYTHONCAPI_COMPAT
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14
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15 #ifdef __cplusplus
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16 extern "C" {
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17 #endif
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18
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19 #include <Python.h>
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20 #include "frameobject.h" // PyFrameObject, PyFrame_GetBack()
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21
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22
46389
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23 /* VC 2008 doesn't know about the inline keyword. */
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24 #if defined(_MSC_VER) && _MSC_VER < 1900
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25 #define inline __forceinline
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26 #endif
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27
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28 // Cast argument to PyObject* type.
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29 #ifndef _PyObject_CAST
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30 # define _PyObject_CAST(op) ((PyObject*)(op))
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31 #endif
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32
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33
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34 // bpo-42262 added Py_NewRef() to Python 3.10.0a3
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35 #if PY_VERSION_HEX < 0x030a00A3 && !defined(Py_NewRef)
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36 static inline PyObject* _Py_NewRef(PyObject *obj)
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37 {
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38 Py_INCREF(obj);
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39 return obj;
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40 }
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41 #define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj))
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42 #endif
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43
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44
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45 // bpo-42262 added Py_XNewRef() to Python 3.10.0a3
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46 #if PY_VERSION_HEX < 0x030a00A3 && !defined(Py_XNewRef)
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47 static inline PyObject* _Py_XNewRef(PyObject *obj)
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48 {
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49 Py_XINCREF(obj);
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50 return obj;
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51 }
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52 #define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj))
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53 #endif
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54
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55
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56 // bpo-39573 added Py_SET_REFCNT() to Python 3.9.0a4
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57 #if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_REFCNT)
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58 static inline void _Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt)
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59 {
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60 ob->ob_refcnt = refcnt;
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61 }
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62 #define Py_SET_REFCNT(ob, refcnt) _Py_SET_REFCNT((PyObject*)(ob), refcnt)
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63 #endif
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64
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65
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66 // bpo-39573 added Py_SET_TYPE() to Python 3.9.0a4
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67 #if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_TYPE)
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68 static inline void
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69 _Py_SET_TYPE(PyObject *ob, PyTypeObject *type)
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70 {
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71 ob->ob_type = type;
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72 }
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73 #define Py_SET_TYPE(ob, type) _Py_SET_TYPE((PyObject*)(ob), type)
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74 #endif
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75
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76
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77 // bpo-39573 added Py_SET_SIZE() to Python 3.9.0a4
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78 #if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_SIZE)
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79 static inline void
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80 _Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size)
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81 {
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82 ob->ob_size = size;
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83 }
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84 #define Py_SET_SIZE(ob, size) _Py_SET_SIZE((PyVarObject*)(ob), size)
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85 #endif
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86
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87
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88 // bpo-40421 added PyFrame_GetCode() to Python 3.9.0b1
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89 #if PY_VERSION_HEX < 0x030900B1
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90 static inline PyCodeObject*
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91 PyFrame_GetCode(PyFrameObject *frame)
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92 {
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93 PyCodeObject *code;
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94 assert(frame != NULL);
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95 code = frame->f_code;
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96 assert(code != NULL);
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97 Py_INCREF(code);
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98 return code;
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99 }
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100 #endif
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101
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102 static inline PyCodeObject*
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103 _PyFrame_GetCodeBorrow(PyFrameObject *frame)
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104 {
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105 PyCodeObject *code = PyFrame_GetCode(frame);
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106 Py_DECREF(code);
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107 return code; // borrowed reference
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108 }
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109
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110
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111 // bpo-40421 added PyFrame_GetCode() to Python 3.9.0b1
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112 #if PY_VERSION_HEX < 0x030900B1
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113 static inline PyFrameObject*
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114 PyFrame_GetBack(PyFrameObject *frame)
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115 {
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116 PyFrameObject *back;
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117 assert(frame != NULL);
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118 back = frame->f_back;
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119 Py_XINCREF(back);
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120 return back;
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121 }
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122 #endif
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123
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124 static inline PyFrameObject*
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125 _PyFrame_GetBackBorrow(PyFrameObject *frame)
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126 {
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127 PyFrameObject *back = PyFrame_GetBack(frame);
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128 Py_XDECREF(back);
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129 return back; // borrowed reference
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130 }
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131
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132
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133 // bpo-39947 added PyThreadState_GetInterpreter() to Python 3.9.0a5
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134 #if PY_VERSION_HEX < 0x030900A5
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135 static inline PyInterpreterState *
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136 PyThreadState_GetInterpreter(PyThreadState *tstate)
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137 {
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138 assert(tstate != NULL);
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139 return tstate->interp;
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140 }
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141 #endif
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142
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143
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144 // bpo-40429 added PyThreadState_GetFrame() to Python 3.9.0b1
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145 #if PY_VERSION_HEX < 0x030900B1
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146 static inline PyFrameObject*
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147 PyThreadState_GetFrame(PyThreadState *tstate)
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148 {
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149 PyFrameObject *frame;
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150 assert(tstate != NULL);
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151 frame = tstate->frame;
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152 Py_XINCREF(frame);
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153 return frame;
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154 }
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155 #endif
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156
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157 static inline PyFrameObject*
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158 _PyThreadState_GetFrameBorrow(PyThreadState *tstate)
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159 {
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160 PyFrameObject *frame = PyThreadState_GetFrame(tstate);
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161 Py_XDECREF(frame);
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162 return frame; // borrowed reference
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163 }
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164
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165
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166 // bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a5
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167 #if PY_VERSION_HEX < 0x030900A5
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168 static inline PyInterpreterState *
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169 PyInterpreterState_Get(void)
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170 {
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171 PyThreadState *tstate;
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172 PyInterpreterState *interp;
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173
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174 tstate = PyThreadState_GET();
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175 if (tstate == NULL) {
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176 Py_FatalError("GIL released (tstate is NULL)");
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177 }
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178 interp = tstate->interp;
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179 if (interp == NULL) {
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180 Py_FatalError("no current interpreter");
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181 }
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182 return interp;
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183 }
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184 #endif
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185
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186
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187 // bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a6
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188 #if 0x030700A1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030900A6
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189 static inline uint64_t
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190 PyThreadState_GetID(PyThreadState *tstate)
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191 {
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192 assert(tstate != NULL);
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193 return tstate->id;
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194 }
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195 #endif
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196
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197
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198 // bpo-37194 added PyObject_CallNoArgs() to Python 3.9.0a1
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199 #if PY_VERSION_HEX < 0x030900A1
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200 static inline PyObject*
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201 PyObject_CallNoArgs(PyObject *func)
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202 {
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203 return PyObject_CallFunctionObjArgs(func, NULL);
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204 }
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205 #endif
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206
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207
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208 // bpo-39245 made PyObject_CallOneArg() public (previously called
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209 // _PyObject_CallOneArg) in Python 3.9.0a4
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210 #if PY_VERSION_HEX < 0x030900A4
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211 static inline PyObject*
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212 PyObject_CallOneArg(PyObject *func, PyObject *arg)
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213 {
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214 return PyObject_CallFunctionObjArgs(func, arg, NULL);
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215 }
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216 #endif
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217
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218
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219 // bpo-40024 added PyModule_AddType() to Python 3.9.0a5
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220 #if PY_VERSION_HEX < 0x030900A5
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221 static inline int
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222 PyModule_AddType(PyObject *module, PyTypeObject *type)
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223 {
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224 const char *name, *dot;
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225
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226 if (PyType_Ready(type) < 0) {
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227 return -1;
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228 }
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229
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230 // inline _PyType_Name()
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231 name = type->tp_name;
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232 assert(name != NULL);
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233 dot = strrchr(name, '.');
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234 if (dot != NULL) {
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235 name = dot + 1;
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236 }
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237
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238 Py_INCREF(type);
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239 if (PyModule_AddObject(module, name, (PyObject *)type) < 0) {
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240 Py_DECREF(type);
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241 return -1;
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242 }
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243
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244 return 0;
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245 }
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246 #endif
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247
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248
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249 // bpo-40241 added PyObject_GC_IsTracked() to Python 3.9.0a6.
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250 // bpo-4688 added _PyObject_GC_IS_TRACKED() to Python 2.7.0a2.
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251 #if PY_VERSION_HEX < 0x030900A6
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252 static inline int
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253 PyObject_GC_IsTracked(PyObject* obj)
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254 {
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255 return (PyObject_IS_GC(obj) && _PyObject_GC_IS_TRACKED(obj));
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256 }
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257 #endif
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258
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259 // bpo-40241 added PyObject_GC_IsFinalized() to Python 3.9.0a6.
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260 // bpo-18112 added _PyGCHead_FINALIZED() to Python 3.4.0 final.
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261 #if PY_VERSION_HEX < 0x030900A6 && PY_VERSION_HEX >= 0x030400F0
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262 static inline int
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263 PyObject_GC_IsFinalized(PyObject *obj)
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264 {
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265 return (PyObject_IS_GC(obj) && _PyGCHead_FINALIZED((PyGC_Head *)(obj)-1));
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266 }
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267 #endif
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268
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269
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270 // bpo-39573 added Py_IS_TYPE() to Python 3.9.0a4
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271 #if PY_VERSION_HEX < 0x030900A4 && !defined(Py_IS_TYPE)
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272 static inline int
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273 _Py_IS_TYPE(const PyObject *ob, const PyTypeObject *type) {
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274 return ob->ob_type == type;
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275 }
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276 #define Py_IS_TYPE(ob, type) _Py_IS_TYPE((const PyObject*)(ob), type)
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277 #endif
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278
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279
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280 #ifdef __cplusplus
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281 }
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282 #endif
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283 #endif // PYTHONCAPI_COMPAT