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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 7152 | 7152 |
| 7153 // This is like GetProperty, but is used when you know the lookup won't fail | 7153 // This is like GetProperty, but is used when you know the lookup won't fail |
| 7154 // by throwing an exception. This is for the debug and builtins global | 7154 // by throwing an exception. This is for the debug and builtins global |
| 7155 // objects, where it is known which properties can be expected to be present | 7155 // objects, where it is known which properties can be expected to be present |
| 7156 // on the object. | 7156 // on the object. |
| 7157 Object* GetPropertyNoExceptionThrown(Name* key) { | 7157 Object* GetPropertyNoExceptionThrown(Name* key) { |
| 7158 Object* answer = GetProperty(key)->ToObjectUnchecked(); | 7158 Object* answer = GetProperty(key)->ToObjectUnchecked(); |
| 7159 return answer; | 7159 return answer; |
| 7160 } | 7160 } |
| 7161 | 7161 |
| 7162 // Ensure that the global object has a cell for the given property name. | |
| 7163 static Handle<PropertyCell> EnsurePropertyCell(Handle<GlobalObject> global, | |
| 7164 Handle<Name> name); | |
| 7165 | |
| 7166 // Casting. | 7162 // Casting. |
| 7167 static inline GlobalObject* cast(Object* obj); | 7163 static inline GlobalObject* cast(Object* obj); |
| 7168 | 7164 |
| 7169 // Layout description. | 7165 // Layout description. |
| 7170 static const int kBuiltinsOffset = JSObject::kHeaderSize; | 7166 static const int kBuiltinsOffset = JSObject::kHeaderSize; |
| 7171 static const int kNativeContextOffset = kBuiltinsOffset + kPointerSize; | 7167 static const int kNativeContextOffset = kBuiltinsOffset + kPointerSize; |
| 7172 static const int kGlobalContextOffset = kNativeContextOffset + kPointerSize; | 7168 static const int kGlobalContextOffset = kNativeContextOffset + kPointerSize; |
| 7173 static const int kGlobalReceiverOffset = kGlobalContextOffset + kPointerSize; | 7169 static const int kGlobalReceiverOffset = kGlobalContextOffset + kPointerSize; |
| 7174 static const int kHeaderSize = kGlobalReceiverOffset + kPointerSize; | 7170 static const int kHeaderSize = kGlobalReceiverOffset + kPointerSize; |
| 7175 | 7171 |
| 7176 private: | 7172 private: |
| 7177 DISALLOW_IMPLICIT_CONSTRUCTORS(GlobalObject); | 7173 DISALLOW_IMPLICIT_CONSTRUCTORS(GlobalObject); |
| 7178 }; | 7174 }; |
| 7179 | 7175 |
| 7180 | 7176 |
| 7181 // JavaScript global object. | 7177 // JavaScript global object. |
| 7182 class JSGlobalObject: public GlobalObject { | 7178 class JSGlobalObject: public GlobalObject { |
| 7183 public: | 7179 public: |
| 7184 // Casting. | 7180 // Casting. |
| 7185 static inline JSGlobalObject* cast(Object* obj); | 7181 static inline JSGlobalObject* cast(Object* obj); |
| 7186 | 7182 |
| 7183 // Ensure that the global object has a cell for the given property name. |
| 7184 static Handle<PropertyCell> EnsurePropertyCell(Handle<JSGlobalObject> global, |
| 7185 Handle<Name> name); |
| 7186 |
| 7187 // Dispatched behavior. | 7187 // Dispatched behavior. |
| 7188 DECLARE_PRINTER(JSGlobalObject) | 7188 DECLARE_PRINTER(JSGlobalObject) |
| 7189 DECLARE_VERIFIER(JSGlobalObject) | 7189 DECLARE_VERIFIER(JSGlobalObject) |
| 7190 | 7190 |
| 7191 // Layout description. | 7191 // Layout description. |
| 7192 static const int kSize = GlobalObject::kHeaderSize; | 7192 static const int kSize = GlobalObject::kHeaderSize; |
| 7193 | 7193 |
| 7194 private: | 7194 private: |
| 7195 DISALLOW_IMPLICIT_CONSTRUCTORS(JSGlobalObject); | 7195 DISALLOW_IMPLICIT_CONSTRUCTORS(JSGlobalObject); |
| 7196 }; | 7196 }; |
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| 10175 } else { | 10175 } else { |
| 10176 value &= ~(1 << bit_position); | 10176 value &= ~(1 << bit_position); |
| 10177 } | 10177 } |
| 10178 return value; | 10178 return value; |
| 10179 } | 10179 } |
| 10180 }; | 10180 }; |
| 10181 | 10181 |
| 10182 } } // namespace v8::internal | 10182 } } // namespace v8::internal |
| 10183 | 10183 |
| 10184 #endif // V8_OBJECTS_H_ | 10184 #endif // V8_OBJECTS_H_ |
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