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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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453 function_state->saved_ast_node_id_); | 453 function_state->saved_ast_node_id_); |
454 } | 454 } |
455 } | 455 } |
456 | 456 |
457 // Helper functions for recursive descent. | 457 // Helper functions for recursive descent. |
458 bool IsEvalOrArguments(Handle<String> identifier) const; | 458 bool IsEvalOrArguments(Handle<String> identifier) const; |
459 | 459 |
460 // Returns true if the expression is of type "this.foo". | 460 // Returns true if the expression is of type "this.foo". |
461 static bool IsThisProperty(Expression* expression); | 461 static bool IsThisProperty(Expression* expression); |
462 | 462 |
463 static bool IsIdentifier(Expression* expression); | |
464 | |
465 static bool IsBoilerplateProperty(ObjectLiteral::Property* property) { | 463 static bool IsBoilerplateProperty(ObjectLiteral::Property* property) { |
466 return ObjectLiteral::IsBoilerplateProperty(property); | 464 return ObjectLiteral::IsBoilerplateProperty(property); |
467 } | 465 } |
468 | 466 |
469 static bool IsArrayIndex(Handle<String> string, uint32_t* index) { | 467 static bool IsArrayIndex(Handle<String> string, uint32_t* index) { |
470 return !string.is_null() && string->AsArrayIndex(index); | 468 return !string.is_null() && string->AsArrayIndex(index); |
471 } | 469 } |
472 | 470 |
473 // Functions for encapsulating the differences between parsing and preparsing; | 471 // Functions for encapsulating the differences between parsing and preparsing; |
474 // operations interleaved with the recursive descent. | 472 // operations interleaved with the recursive descent. |
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504 // in strict mode. | 502 // in strict mode. |
505 void CheckStrictModeLValue(Expression*expression, bool* ok); | 503 void CheckStrictModeLValue(Expression*expression, bool* ok); |
506 | 504 |
507 // Returns true if we have a binary expression between two numeric | 505 // Returns true if we have a binary expression between two numeric |
508 // literals. In that case, *x will be changed to an expression which is the | 506 // literals. In that case, *x will be changed to an expression which is the |
509 // computed value. | 507 // computed value. |
510 bool ShortcutNumericLiteralBinaryExpression( | 508 bool ShortcutNumericLiteralBinaryExpression( |
511 Expression** x, Expression* y, Token::Value op, int pos, | 509 Expression** x, Expression* y, Token::Value op, int pos, |
512 AstNodeFactory<AstConstructionVisitor>* factory); | 510 AstNodeFactory<AstConstructionVisitor>* factory); |
513 | 511 |
514 // Rewrites the following types of unary expressions: | |
515 // not <literal> -> true / false | |
516 // + <numeric literal> -> <numeric literal> | |
517 // - <numeric literal> -> <numeric literal with value negated> | |
518 // ! <literal> -> true / false | |
519 // The following rewriting rules enable the collection of type feedback | |
520 // without any special stub and the multiplication is removed later in | |
521 // Crankshaft's canonicalization pass. | |
522 // + foo -> foo * 1 | |
523 // - foo -> foo * (-1) | |
524 // ~ foo -> foo ^(~0) | |
525 Expression* BuildUnaryExpression( | |
526 Expression* expression, Token::Value op, int pos, | |
527 AstNodeFactory<AstConstructionVisitor>* factory); | |
528 | |
529 // Reporting errors. | 512 // Reporting errors. |
530 void ReportMessageAt(Scanner::Location source_location, | 513 void ReportMessageAt(Scanner::Location source_location, |
531 const char* message, | 514 const char* message, |
532 Vector<const char*> args, | 515 Vector<const char*> args, |
533 bool is_reference_error = false); | 516 bool is_reference_error = false); |
534 void ReportMessage(const char* message, | 517 void ReportMessage(const char* message, |
535 Vector<Handle<String> > args, | 518 Vector<Handle<String> > args, |
536 bool is_reference_error = false); | 519 bool is_reference_error = false); |
537 void ReportMessageAt(Scanner::Location source_location, | 520 void ReportMessageAt(Scanner::Location source_location, |
538 const char* message, | 521 const char* message, |
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582 // Temporary glue; these functions will move to ParserBase. | 565 // Temporary glue; these functions will move to ParserBase. |
583 Expression* ParseV8Intrinsic(bool* ok); | 566 Expression* ParseV8Intrinsic(bool* ok); |
584 FunctionLiteral* ParseFunctionLiteral( | 567 FunctionLiteral* ParseFunctionLiteral( |
585 Handle<String> name, | 568 Handle<String> name, |
586 Scanner::Location function_name_location, | 569 Scanner::Location function_name_location, |
587 bool name_is_strict_reserved, | 570 bool name_is_strict_reserved, |
588 bool is_generator, | 571 bool is_generator, |
589 int function_token_position, | 572 int function_token_position, |
590 FunctionLiteral::FunctionType type, | 573 FunctionLiteral::FunctionType type, |
591 bool* ok); | 574 bool* ok); |
592 Expression* ParsePostfixExpression(bool* ok); | 575 Expression* ParseUnaryExpression(bool* ok); |
593 | 576 |
594 private: | 577 private: |
595 Parser* parser_; | 578 Parser* parser_; |
596 }; | 579 }; |
597 | 580 |
598 | 581 |
599 class Parser : public ParserBase<ParserTraits> { | 582 class Parser : public ParserBase<ParserTraits> { |
600 public: | 583 public: |
601 explicit Parser(CompilationInfo* info); | 584 explicit Parser(CompilationInfo* info); |
602 ~Parser() { | 585 ~Parser() { |
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864 private: | 847 private: |
865 static const int kLiteralTypeSlot = 0; | 848 static const int kLiteralTypeSlot = 0; |
866 static const int kElementsSlot = 1; | 849 static const int kElementsSlot = 1; |
867 | 850 |
868 DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue); | 851 DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue); |
869 }; | 852 }; |
870 | 853 |
871 } } // namespace v8::internal | 854 } } // namespace v8::internal |
872 | 855 |
873 #endif // V8_PARSER_H_ | 856 #endif // V8_PARSER_H_ |
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