annotate context.c @ 21:fc04e5f1c675

Changed object constructor to take a context instead of a runtime.
author Atul Varma <varmaa@toolness.com>
date Sun, 28 Jun 2009 20:40:18 -0700
parents abede8af8cf5
children 74b7ad049542
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551ba05fe6ad factored out Runtime, Context, and utils into separate files.
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1 #include "context.h"
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2 #include "object.h"
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3 #include "utils.h"
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4
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5 static void
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6 PYM_JSContextDealloc(PYM_JSContextObject *self)
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7 {
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8 if (self->cx) {
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9 JS_DestroyContext(self->cx);
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10 self->cx = NULL;
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11 }
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12
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13 Py_DECREF(self->runtime);
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14 self->runtime = NULL;
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15
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16 self->ob_type->tp_free((PyObject *) self);
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17 }
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18
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19 static PyObject *
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20 PYM_getRuntime(PYM_JSContextObject *self, PyObject *args)
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21 {
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22 Py_INCREF(self->runtime);
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23 return (PyObject *) self->runtime;
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24 }
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25
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26 static PyObject *
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27 PYM_newObject(PYM_JSContextObject *self, PyObject *args)
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28 {
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f3223debd70b Refactoring; moved PYM_JSObject creation code into a new public function in object.c.
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29 JSObject *obj = JS_NewObject(self->cx, &PYM_JS_ObjectClass, NULL, NULL);
f3223debd70b Refactoring; moved PYM_JSObject creation code into a new public function in object.c.
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30 if (obj == NULL) {
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31 PyErr_SetString(PYM_error, "JS_NewObject() failed");
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32 return NULL;
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33 }
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34
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fbb9a61fa030 Moved context creation code into its own public function in context.c.
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35 // If this fails, we don't need to worry about cleaning up
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36 // obj because it'll get cleaned up at the next GC.
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37 return (PyObject *) PYM_newJSObject(self, obj);
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38 }
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39
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40 static PyObject *
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41 PYM_getProperty(PYM_JSContextObject *self, PyObject *args)
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42 {
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43 // TODO: We're making a lot of copies of the string here, which
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44 // can't be very efficient.
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45
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46 PYM_JSObject *object;
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47 char *string;
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48
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49 if (!JS_CStringsAreUTF8()) {
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50 PyErr_SetString(PyExc_NotImplementedError,
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51 "Data type conversion not implemented.");
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52 return NULL;
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53 }
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54
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55 if (!PyArg_ParseTuple(args, "O!es", &PYM_JSObjectType, &object,
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56 "utf-8", &string))
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57 return NULL;
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58
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59 JSString *jsString = JS_NewStringCopyZ(self->cx, string);
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60 if (jsString == NULL) {
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61 PyMem_Free(string);
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62 PyErr_SetString(PYM_error, "JS_NewStringCopyZ() failed");
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63 return NULL;
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64 }
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65
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66 jsval val;
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67 if (!JS_GetUCProperty(self->cx, object->obj,
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68 JS_GetStringChars(jsString),
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69 JS_GetStringLength(jsString), &val)) {
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70 // TODO: Get the actual JS exception. Any exception that exists
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71 // here will probably still be pending on the JS context.
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72 PyMem_Free(string);
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73 PyErr_SetString(PYM_error, "Getting property failed.");
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74 return NULL;
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75 }
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76
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77 PyMem_Free(string);
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78 return PYM_jsvalToPyObject(self, val);
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79 }
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80
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81 static PyObject *
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82 PYM_initStandardClasses(PYM_JSContextObject *self, PyObject *args)
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83 {
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84 PYM_JSObject *object;
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85
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86 if (!PyArg_ParseTuple(args, "O!", &PYM_JSObjectType, &object))
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87 return NULL;
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88
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89 if (!JS_InitStandardClasses(self->cx, object->obj)) {
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90 PyErr_SetString(PYM_error, "JS_InitStandardClasses() failed");
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91 return NULL;
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92 }
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93
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94 Py_RETURN_NONE;
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95 }
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96
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97 static PyObject *
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98 PYM_evaluateScript(PYM_JSContextObject *self, PyObject *args)
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99 {
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100 PYM_JSObject *object;
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101 const char *source;
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102 int sourceLen;
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103 const char *filename;
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104 int lineNo;
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105
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106 if (!PyArg_ParseTuple(args, "O!s#si", &PYM_JSObjectType, &object,
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107 &source, &sourceLen, &filename, &lineNo))
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108 return NULL;
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109
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110 JS_BeginRequest(self->cx);
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111
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112 jsval rval;
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113 if (!JS_EvaluateScript(self->cx, object->obj, source, sourceLen,
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114 filename, lineNo, &rval)) {
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115 // TODO: Actually get the error that was raised.
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116 PyErr_SetString(PYM_error, "Script failed");
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117 JS_EndRequest(self->cx);
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118 return NULL;
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119 }
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120
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121 PyObject *pyRval = PYM_jsvalToPyObject(self, rval);
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122
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123 JS_EndRequest(self->cx);
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124
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125 return pyRval;
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126 }
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127
11
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128 static PyMethodDef PYM_JSContextMethods[] = {
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129 {"get_runtime", (PyCFunction) PYM_getRuntime, METH_VARARGS,
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130 "Get the JavaScript runtime associated with this context."},
13
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131 {"new_object", (PyCFunction) PYM_newObject, METH_VARARGS,
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132 "Create a new JavaScript object."},
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133 {"init_standard_classes",
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134 (PyCFunction) PYM_initStandardClasses, METH_VARARGS,
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135 "Add standard classes and functions to the given object."},
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136 {"evaluate_script",
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137 (PyCFunction) PYM_evaluateScript, METH_VARARGS,
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138 "Evaluate the given JavaScript code in the context of the given "
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139 "global object, using the given filename"
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140 "and line number information."},
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141 {"get_property", (PyCFunction) PYM_getProperty, METH_VARARGS,
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142 "Gets the given property for the given JavaScript object."},
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143 {NULL, NULL, 0, NULL}
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144 };
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145
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146 PyTypeObject PYM_JSContextType = {
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147 PyObject_HEAD_INIT(NULL)
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148 0, /*ob_size*/
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149 "pymonkey.Context", /*tp_name*/
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150 sizeof(PYM_JSContextObject), /*tp_basicsize*/
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151 0, /*tp_itemsize*/
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152 /*tp_dealloc*/
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153 (destructor) PYM_JSContextDealloc,
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154 0, /*tp_print*/
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155 0, /*tp_getattr*/
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156 0, /*tp_setattr*/
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157 0, /*tp_compare*/
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158 0, /*tp_repr*/
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159 0, /*tp_as_number*/
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160 0, /*tp_as_sequence*/
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161 0, /*tp_as_mapping*/
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162 0, /*tp_hash */
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163 0, /*tp_call*/
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164 0, /*tp_str*/
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165 0, /*tp_getattro*/
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166 0, /*tp_setattro*/
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167 0, /*tp_as_buffer*/
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168 Py_TPFLAGS_DEFAULT, /*tp_flags*/
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169 /* tp_doc */
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170 "JavaScript Context.",
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171 0, /* tp_traverse */
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172 0, /* tp_clear */
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173 0, /* tp_richcompare */
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174 0, /* tp_weaklistoffset */
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175 0, /* tp_iter */
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176 0, /* tp_iternext */
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177 PYM_JSContextMethods, /* tp_methods */
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178 0, /* tp_members */
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179 0, /* tp_getset */
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180 0, /* tp_base */
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181 0, /* tp_dict */
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182 0, /* tp_descr_get */
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183 0, /* tp_descr_set */
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184 0, /* tp_dictoffset */
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185 0, /* tp_init */
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186 0, /* tp_alloc */
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187 0, /* tp_new */
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188 };
19
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189
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190 extern PYM_JSContextObject *
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191 PYM_newJSContextObject(PYM_JSRuntimeObject *runtime, JSContext *cx)
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192 {
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193 PYM_JSContextObject *context = PyObject_New(PYM_JSContextObject,
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194 &PYM_JSContextType);
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195 if (context == NULL)
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196 return NULL;
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197
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198 context->runtime = runtime;
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199 Py_INCREF(runtime);
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200
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201 context->cx = cx;
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202
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203 return context;
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204 }