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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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| 262 class RegExpBuilder: public ZoneObject { | 262 class RegExpBuilder: public ZoneObject { | 
| 263  public: | 263  public: | 
| 264   explicit RegExpBuilder(Zone* zone); | 264   explicit RegExpBuilder(Zone* zone); | 
| 265   void AddCharacter(uc16 character); | 265   void AddCharacter(uc16 character); | 
| 266   // "Adds" an empty expression. Does nothing except consume a | 266   // "Adds" an empty expression. Does nothing except consume a | 
| 267   // following quantifier | 267   // following quantifier | 
| 268   void AddEmpty(); | 268   void AddEmpty(); | 
| 269   void AddAtom(RegExpTree* tree); | 269   void AddAtom(RegExpTree* tree); | 
| 270   void AddAssertion(RegExpTree* tree); | 270   void AddAssertion(RegExpTree* tree); | 
| 271   void NewAlternative();  // '|' | 271   void NewAlternative();  // '|' | 
| 272   void AddQuantifierToAtom(int min, int max, RegExpQuantifier::Type type); | 272   void AddQuantifierToAtom( | 
|  | 273       int min, int max, RegExpQuantifier::QuantifierType type); | 
| 273   RegExpTree* ToRegExp(); | 274   RegExpTree* ToRegExp(); | 
| 274 | 275 | 
| 275  private: | 276  private: | 
| 276   void FlushCharacters(); | 277   void FlushCharacters(); | 
| 277   void FlushText(); | 278   void FlushText(); | 
| 278   void FlushTerms(); | 279   void FlushTerms(); | 
| 279   Zone* zone() const { return zone_; } | 280   Zone* zone() const { return zone_; } | 
| 280 | 281 | 
| 281   Zone* zone_; | 282   Zone* zone_; | 
| 282   bool pending_empty_; | 283   bool pending_empty_; | 
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| 683   // compile time value as encoded by CompileTimeValue::GetValue(). | 684   // compile time value as encoded by CompileTimeValue::GetValue(). | 
| 684   // Otherwise, return undefined literal as the placeholder | 685   // Otherwise, return undefined literal as the placeholder | 
| 685   // in the object literal boilerplate. | 686   // in the object literal boilerplate. | 
| 686   Handle<Object> GetBoilerplateValue(Expression* expression); | 687   Handle<Object> GetBoilerplateValue(Expression* expression); | 
| 687 | 688 | 
| 688   ZoneList<Expression*>* ParseArguments(bool* ok); | 689   ZoneList<Expression*>* ParseArguments(bool* ok); | 
| 689   FunctionLiteral* ParseFunctionLiteral(Handle<String> var_name, | 690   FunctionLiteral* ParseFunctionLiteral(Handle<String> var_name, | 
| 690                                         bool name_is_reserved, | 691                                         bool name_is_reserved, | 
| 691                                         bool is_generator, | 692                                         bool is_generator, | 
| 692                                         int function_token_position, | 693                                         int function_token_position, | 
| 693                                         FunctionLiteral::Type type, | 694                                         FunctionLiteral::FunctionType type, | 
| 694                                         bool* ok); | 695                                         bool* ok); | 
| 695 | 696 | 
| 696 | 697 | 
| 697   // Magical syntax support. | 698   // Magical syntax support. | 
| 698   Expression* ParseV8Intrinsic(bool* ok); | 699   Expression* ParseV8Intrinsic(bool* ok); | 
| 699 | 700 | 
| 700   INLINE(Token::Value peek()) { | 701   INLINE(Token::Value peek()) { | 
| 701     if (stack_overflow_) return Token::ILLEGAL; | 702     if (stack_overflow_) return Token::ILLEGAL; | 
| 702     return scanner().peek(); | 703     return scanner().peek(); | 
| 703   } | 704   } | 
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| 860   CompilationInfo* info_; | 861   CompilationInfo* info_; | 
| 861   friend class BlockState; | 862   friend class BlockState; | 
| 862   friend class FunctionState; | 863   friend class FunctionState; | 
| 863 }; | 864 }; | 
| 864 | 865 | 
| 865 | 866 | 
| 866 // Support for handling complex values (array and object literals) that | 867 // Support for handling complex values (array and object literals) that | 
| 867 // can be fully handled at compile time. | 868 // can be fully handled at compile time. | 
| 868 class CompileTimeValue: public AllStatic { | 869 class CompileTimeValue: public AllStatic { | 
| 869  public: | 870  public: | 
| 870   enum Type { | 871   enum LiteralType { | 
| 871     OBJECT_LITERAL_FAST_ELEMENTS, | 872     OBJECT_LITERAL_FAST_ELEMENTS, | 
| 872     OBJECT_LITERAL_SLOW_ELEMENTS, | 873     OBJECT_LITERAL_SLOW_ELEMENTS, | 
| 873     ARRAY_LITERAL | 874     ARRAY_LITERAL | 
| 874   }; | 875   }; | 
| 875 | 876 | 
| 876   static bool IsCompileTimeValue(Expression* expression); | 877   static bool IsCompileTimeValue(Expression* expression); | 
| 877 | 878 | 
| 878   static bool ArrayLiteralElementNeedsInitialization(Expression* value); | 879   static bool ArrayLiteralElementNeedsInitialization(Expression* value); | 
| 879 | 880 | 
| 880   // Get the value as a compile time value. | 881   // Get the value as a compile time value. | 
| 881   static Handle<FixedArray> GetValue(Expression* expression); | 882   static Handle<FixedArray> GetValue(Expression* expression); | 
| 882 | 883 | 
| 883   // Get the type of a compile time value returned by GetValue(). | 884   // Get the type of a compile time value returned by GetValue(). | 
| 884   static Type GetType(Handle<FixedArray> value); | 885   static LiteralType GetLiteralType(Handle<FixedArray> value); | 
| 885 | 886 | 
| 886   // Get the elements array of a compile time value returned by GetValue(). | 887   // Get the elements array of a compile time value returned by GetValue(). | 
| 887   static Handle<FixedArray> GetElements(Handle<FixedArray> value); | 888   static Handle<FixedArray> GetElements(Handle<FixedArray> value); | 
| 888 | 889 | 
| 889  private: | 890  private: | 
| 890   static const int kTypeSlot = 0; | 891   static const int kLiteralTypeSlot = 0; | 
| 891   static const int kElementsSlot = 1; | 892   static const int kElementsSlot = 1; | 
| 892 | 893 | 
| 893   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue); | 894   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue); | 
| 894 }; | 895 }; | 
| 895 | 896 | 
| 896 } }  // namespace v8::internal | 897 } }  // namespace v8::internal | 
| 897 | 898 | 
| 898 #endif  // V8_PARSER_H_ | 899 #endif  // V8_PARSER_H_ | 
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