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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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2585 | 2585 |
2586 DoWhileStatement* loop = | 2586 DoWhileStatement* loop = |
2587 factory()->NewDoWhileStatement(labels, peek_position()); | 2587 factory()->NewDoWhileStatement(labels, peek_position()); |
2588 Target target(&this->target_stack_, loop); | 2588 Target target(&this->target_stack_, loop); |
2589 | 2589 |
2590 Expect(Token::DO, CHECK_OK); | 2590 Expect(Token::DO, CHECK_OK); |
2591 Statement* body = ParseStatement(NULL, CHECK_OK); | 2591 Statement* body = ParseStatement(NULL, CHECK_OK); |
2592 Expect(Token::WHILE, CHECK_OK); | 2592 Expect(Token::WHILE, CHECK_OK); |
2593 Expect(Token::LPAREN, CHECK_OK); | 2593 Expect(Token::LPAREN, CHECK_OK); |
2594 | 2594 |
2595 if (loop != NULL) loop->set_condition_position(position()); | |
2596 | |
2597 Expression* cond = ParseExpression(true, CHECK_OK); | 2595 Expression* cond = ParseExpression(true, CHECK_OK); |
2598 Expect(Token::RPAREN, CHECK_OK); | 2596 Expect(Token::RPAREN, CHECK_OK); |
2599 | 2597 |
2600 // Allow do-statements to be terminated with and without | 2598 // Allow do-statements to be terminated with and without |
2601 // semi-colons. This allows code such as 'do;while(0)return' to | 2599 // semi-colons. This allows code such as 'do;while(0)return' to |
2602 // parse, which would not be the case if we had used the | 2600 // parse, which would not be the case if we had used the |
2603 // ExpectSemicolon() functionality here. | 2601 // ExpectSemicolon() functionality here. |
2604 if (peek() == Token::SEMICOLON) Consume(Token::SEMICOLON); | 2602 if (peek() == Token::SEMICOLON) Consume(Token::SEMICOLON); |
2605 | 2603 |
2606 if (loop != NULL) loop->Initialize(cond, body); | 2604 if (loop != NULL) loop->Initialize(cond, body); |
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3038 // LogicalOrExpression '?' AssignmentExpression ':' AssignmentExpression | 3036 // LogicalOrExpression '?' AssignmentExpression ':' AssignmentExpression |
3039 | 3037 |
3040 int pos = peek_position(); | 3038 int pos = peek_position(); |
3041 // We start using the binary expression parser for prec >= 4 only! | 3039 // We start using the binary expression parser for prec >= 4 only! |
3042 Expression* expression = ParseBinaryExpression(4, accept_IN, CHECK_OK); | 3040 Expression* expression = ParseBinaryExpression(4, accept_IN, CHECK_OK); |
3043 if (peek() != Token::CONDITIONAL) return expression; | 3041 if (peek() != Token::CONDITIONAL) return expression; |
3044 Consume(Token::CONDITIONAL); | 3042 Consume(Token::CONDITIONAL); |
3045 // In parsing the first assignment expression in conditional | 3043 // In parsing the first assignment expression in conditional |
3046 // expressions we always accept the 'in' keyword; see ECMA-262, | 3044 // expressions we always accept the 'in' keyword; see ECMA-262, |
3047 // section 11.12, page 58. | 3045 // section 11.12, page 58. |
3048 int left_position = peek_position(); | |
3049 Expression* left = ParseAssignmentExpression(true, CHECK_OK); | 3046 Expression* left = ParseAssignmentExpression(true, CHECK_OK); |
3050 Expect(Token::COLON, CHECK_OK); | 3047 Expect(Token::COLON, CHECK_OK); |
3051 int right_position = peek_position(); | |
3052 Expression* right = ParseAssignmentExpression(accept_IN, CHECK_OK); | 3048 Expression* right = ParseAssignmentExpression(accept_IN, CHECK_OK); |
3053 return factory()->NewConditional( | 3049 return factory()->NewConditional(expression, left, right, pos); |
3054 expression, left, right, left_position, right_position, pos); | |
3055 } | 3050 } |
3056 | 3051 |
3057 | 3052 |
3058 static int Precedence(Token::Value tok, bool accept_IN) { | 3053 static int Precedence(Token::Value tok, bool accept_IN) { |
3059 if (tok == Token::IN && !accept_IN) | 3054 if (tok == Token::IN && !accept_IN) |
3060 return 0; // 0 precedence will terminate binary expression parsing | 3055 return 0; // 0 precedence will terminate binary expression parsing |
3061 | 3056 |
3062 return Token::Precedence(tok); | 3057 return Token::Precedence(tok); |
3063 } | 3058 } |
3064 | 3059 |
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5999 ASSERT(info()->isolate()->has_pending_exception()); | 5994 ASSERT(info()->isolate()->has_pending_exception()); |
6000 } else { | 5995 } else { |
6001 result = ParseProgram(); | 5996 result = ParseProgram(); |
6002 } | 5997 } |
6003 } | 5998 } |
6004 info()->SetFunction(result); | 5999 info()->SetFunction(result); |
6005 return (result != NULL); | 6000 return (result != NULL); |
6006 } | 6001 } |
6007 | 6002 |
6008 } } // namespace v8::internal | 6003 } } // namespace v8::internal |
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