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Issue 16549002: Add type field to AST expression nodes (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 6 months ago
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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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