1 // Copyright 2012 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #ifndef V8_ACCESSORS_H_ 29 #define V8_ACCESSORS_H_ 30 31 #include "allocation.h" 32 #include "v8globals.h" 33 34 namespace v8 { 35 namespace internal { 36 37 // The list of accessor descriptors. This is a second-order macro 38 // taking a macro to be applied to all accessor descriptor names. 39 #define ACCESSOR_DESCRIPTOR_LIST(V) \ 40 V(FunctionPrototype) \ 41 V(FunctionLength) \ 42 V(FunctionName) \ 43 V(FunctionArguments) \ 44 V(FunctionCaller) \ 45 V(ArrayLength) \ 46 V(StringLength) \ 47 V(ScriptSource) \ 48 V(ScriptName) \ 49 V(ScriptId) \ 50 V(ScriptLineOffset) \ 51 V(ScriptColumnOffset) \ 52 V(ScriptData) \ 53 V(ScriptType) \ 54 V(ScriptCompilationType) \ 55 V(ScriptLineEnds) \ 56 V(ScriptContextData) \ 57 V(ScriptEvalFromScript) \ 58 V(ScriptEvalFromScriptPosition) \ 59 V(ScriptEvalFromFunctionName) 60 61 // Accessors contains all predefined proxy accessors. 62 63 class Accessors : public AllStatic { 64 public: 65 // Accessor descriptors. 66 #define ACCESSOR_DESCRIPTOR_DECLARATION(name) \ 67 static const AccessorDescriptor name; 68 ACCESSOR_DESCRIPTOR_LIST(ACCESSOR_DESCRIPTOR_DECLARATION) 69 #undef ACCESSOR_DESCRIPTOR_DECLARATION 70 71 enum DescriptorId { 72 #define ACCESSOR_DESCRIPTOR_DECLARATION(name) \ 73 k##name, 74 ACCESSOR_DESCRIPTOR_LIST(ACCESSOR_DESCRIPTOR_DECLARATION) 75 #undef ACCESSOR_DESCRIPTOR_DECLARATION 76 descriptorCount 77 }; 78 79 // Accessor functions called directly from the runtime system. 80 static Handle<Object> FunctionSetPrototype(Handle<JSFunction> object, 81 Handle<Object> value); 82 static Handle<Object> FunctionGetPrototype(Handle<JSFunction> object); 83 static Handle<Object> FunctionGetArguments(Handle<JSFunction> object); 84 85 // Accessor infos. 86 static Handle<AccessorInfo> MakeModuleExport( 87 Handle<String> name, int index, PropertyAttributes attributes); 88 89 // Returns true for properties that are accessors to object fields. 90 // If true, *object_offset contains offset of object field. 91 static bool IsJSObjectFieldAccessor( 92 Handle<Map> map, Handle<String> name, 93 int* object_offset); 94 95 96 private: 97 // Accessor functions only used through the descriptor. 98 static MaybeObject* FunctionSetPrototype(Isolate* isolate, 99 JSObject* object, 100 Object*, 101 void*); 102 static MaybeObject* FunctionGetPrototype(Isolate* isolate, 103 Object* object, 104 void*); 105 static MaybeObject* FunctionGetLength(Isolate* isolate, 106 Object* object, 107 void*); 108 static MaybeObject* FunctionGetName(Isolate* isolate, Object* object, void*); 109 static MaybeObject* FunctionGetArguments(Isolate* isolate, 110 Object* object, 111 void*); 112 static MaybeObject* FunctionGetCaller(Isolate* isolate, 113 Object* object, 114 void*); 115 static MaybeObject* ArraySetLength(Isolate* isolate, 116 JSObject* object, 117 Object*, 118 void*); 119 static MaybeObject* ArrayGetLength(Isolate* isolate, Object* object, void*); 120 static MaybeObject* StringGetLength(Isolate* isolate, Object* object, void*); 121 static MaybeObject* ScriptGetName(Isolate* isolate, Object* object, void*); 122 static MaybeObject* ScriptGetId(Isolate* isolate, Object* object, void*); 123 static MaybeObject* ScriptGetSource(Isolate* isolate, Object* object, void*); 124 static MaybeObject* ScriptGetLineOffset(Isolate* isolate, 125 Object* object, 126 void*); 127 static MaybeObject* ScriptGetColumnOffset(Isolate* isolate, 128 Object* object, 129 void*); 130 static MaybeObject* ScriptGetData(Isolate* isolate, Object* object, void*); 131 static MaybeObject* ScriptGetType(Isolate* isolate, Object* object, void*); 132 static MaybeObject* ScriptGetCompilationType(Isolate* isolate, 133 Object* object, 134 void*); 135 static MaybeObject* ScriptGetLineEnds(Isolate* isolate, 136 Object* object, 137 void*); 138 static MaybeObject* ScriptGetContextData(Isolate* isolate, 139 Object* object, 140 void*); 141 static MaybeObject* ScriptGetEvalFromScript(Isolate* isolate, 142 Object* object, 143 void*); 144 static MaybeObject* ScriptGetEvalFromScriptPosition(Isolate* isolate, 145 Object* object, 146 void*); 147 static MaybeObject* ScriptGetEvalFromFunctionName(Isolate* isolate, 148 Object* object, 149 void*); 150 151 // Helper functions. 152 static Handle<Object> FlattenNumber(Isolate* isolate, Handle<Object> value); 153 static MaybeObject* IllegalSetter(Isolate* isolate, 154 JSObject*, 155 Object*, 156 void*); 157 static Object* IllegalGetAccessor(Isolate* isolate, Object* object, void*); 158 static MaybeObject* ReadOnlySetAccessor(Isolate* isolate, 159 JSObject*, 160 Object* value, 161 void*); 162 }; 163 164 } } // namespace v8::internal 165 166 #endif // V8_ACCESSORS_H_ 167
