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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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2312 tok == Token::EOS) { | 2312 tok == Token::EOS) { |
2313 return_value = GetLiteralUndefined(); | 2313 return_value = GetLiteralUndefined(); |
2314 } else { | 2314 } else { |
2315 return_value = ParseExpression(true, CHECK_OK); | 2315 return_value = ParseExpression(true, CHECK_OK); |
2316 } | 2316 } |
2317 ExpectSemicolon(CHECK_OK); | 2317 ExpectSemicolon(CHECK_OK); |
2318 if (is_generator()) { | 2318 if (is_generator()) { |
2319 Expression* generator = factory()->NewVariableProxy( | 2319 Expression* generator = factory()->NewVariableProxy( |
2320 current_function_state_->generator_object_variable()); | 2320 current_function_state_->generator_object_variable()); |
2321 Expression* yield = factory()->NewYield( | 2321 Expression* yield = factory()->NewYield( |
2322 generator, return_value, Yield::kFinal, RelocInfo::kNoPosition); | 2322 generator, return_value, Yield::FINAL, RelocInfo::kNoPosition); |
2323 result = factory()->NewExpressionStatement(yield); | 2323 result = factory()->NewExpressionStatement(yield); |
2324 } else { | 2324 } else { |
2325 result = factory()->NewReturnStatement(return_value); | 2325 result = factory()->NewReturnStatement(return_value); |
2326 } | 2326 } |
2327 | 2327 |
2328 // An ECMAScript program is considered syntactically incorrect if it | 2328 // An ECMAScript program is considered syntactically incorrect if it |
2329 // contains a return statement that is not within the body of a | 2329 // contains a return statement that is not within the body of a |
2330 // function. See ECMA-262, section 12.9, page 67. | 2330 // function. See ECMA-262, section 12.9, page 67. |
2331 // | 2331 // |
2332 // To be consistent with KJS we report the syntax error at runtime. | 2332 // To be consistent with KJS we report the syntax error at runtime. |
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2990 return factory()->NewAssignment(op, expression, right, pos); | 2990 return factory()->NewAssignment(op, expression, right, pos); |
2991 } | 2991 } |
2992 | 2992 |
2993 | 2993 |
2994 Expression* Parser::ParseYieldExpression(bool* ok) { | 2994 Expression* Parser::ParseYieldExpression(bool* ok) { |
2995 // YieldExpression :: | 2995 // YieldExpression :: |
2996 // 'yield' '*'? AssignmentExpression | 2996 // 'yield' '*'? AssignmentExpression |
2997 int position = scanner().peek_location().beg_pos; | 2997 int position = scanner().peek_location().beg_pos; |
2998 Expect(Token::YIELD, CHECK_OK); | 2998 Expect(Token::YIELD, CHECK_OK); |
2999 Yield::Kind kind = | 2999 Yield::Kind kind = |
3000 Check(Token::MUL) ? Yield::kDelegating : Yield::kSuspend; | 3000 Check(Token::MUL) ? Yield::DELEGATING : Yield::SUSPEND; |
3001 Expression* generator_object = factory()->NewVariableProxy( | 3001 Expression* generator_object = factory()->NewVariableProxy( |
3002 current_function_state_->generator_object_variable()); | 3002 current_function_state_->generator_object_variable()); |
3003 Expression* expression = ParseAssignmentExpression(false, CHECK_OK); | 3003 Expression* expression = ParseAssignmentExpression(false, CHECK_OK); |
3004 Yield* yield = | 3004 Yield* yield = |
3005 factory()->NewYield(generator_object, expression, kind, position); | 3005 factory()->NewYield(generator_object, expression, kind, position); |
3006 if (kind == Yield::kDelegating) { | 3006 if (kind == Yield::DELEGATING) { |
3007 yield->set_index(current_function_state_->NextHandlerIndex()); | 3007 yield->set_index(current_function_state_->NextHandlerIndex()); |
3008 } | 3008 } |
3009 return yield; | 3009 return yield; |
3010 } | 3010 } |
3011 | 3011 |
3012 | 3012 |
3013 // Precedence = 3 | 3013 // Precedence = 3 |
3014 Expression* Parser::ParseConditionalExpression(bool accept_IN, bool* ok) { | 3014 Expression* Parser::ParseConditionalExpression(bool accept_IN, bool* ok) { |
3015 // ConditionalExpression :: | 3015 // ConditionalExpression :: |
3016 // LogicalOrExpression | 3016 // LogicalOrExpression |
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4477 isolate()->factory()->empty_string(), | 4477 isolate()->factory()->empty_string(), |
4478 Runtime::FunctionForId(Runtime::kCreateJSGeneratorObject), | 4478 Runtime::FunctionForId(Runtime::kCreateJSGeneratorObject), |
4479 arguments); | 4479 arguments); |
4480 VariableProxy* init_proxy = factory()->NewVariableProxy( | 4480 VariableProxy* init_proxy = factory()->NewVariableProxy( |
4481 current_function_state_->generator_object_variable()); | 4481 current_function_state_->generator_object_variable()); |
4482 Assignment* assignment = factory()->NewAssignment( | 4482 Assignment* assignment = factory()->NewAssignment( |
4483 Token::INIT_VAR, init_proxy, allocation, RelocInfo::kNoPosition); | 4483 Token::INIT_VAR, init_proxy, allocation, RelocInfo::kNoPosition); |
4484 VariableProxy* get_proxy = factory()->NewVariableProxy( | 4484 VariableProxy* get_proxy = factory()->NewVariableProxy( |
4485 current_function_state_->generator_object_variable()); | 4485 current_function_state_->generator_object_variable()); |
4486 Yield* yield = factory()->NewYield( | 4486 Yield* yield = factory()->NewYield( |
4487 get_proxy, assignment, Yield::kInitial, RelocInfo::kNoPosition); | 4487 get_proxy, assignment, Yield::INITIAL, RelocInfo::kNoPosition); |
4488 body->Add(factory()->NewExpressionStatement(yield), zone()); | 4488 body->Add(factory()->NewExpressionStatement(yield), zone()); |
4489 } | 4489 } |
4490 | 4490 |
4491 ParseSourceElements(body, Token::RBRACE, false, false, CHECK_OK); | 4491 ParseSourceElements(body, Token::RBRACE, false, false, CHECK_OK); |
4492 | 4492 |
4493 if (is_generator) { | 4493 if (is_generator) { |
4494 VariableProxy* get_proxy = factory()->NewVariableProxy( | 4494 VariableProxy* get_proxy = factory()->NewVariableProxy( |
4495 current_function_state_->generator_object_variable()); | 4495 current_function_state_->generator_object_variable()); |
4496 Expression *undefined = factory()->NewLiteral( | 4496 Expression *undefined = factory()->NewLiteral( |
4497 isolate()->factory()->undefined_value()); | 4497 isolate()->factory()->undefined_value()); |
4498 Yield* yield = factory()->NewYield( | 4498 Yield* yield = factory()->NewYield( |
4499 get_proxy, undefined, Yield::kFinal, RelocInfo::kNoPosition); | 4499 get_proxy, undefined, Yield::FINAL, RelocInfo::kNoPosition); |
4500 body->Add(factory()->NewExpressionStatement(yield), zone()); | 4500 body->Add(factory()->NewExpressionStatement(yield), zone()); |
4501 } | 4501 } |
4502 | 4502 |
4503 materialized_literal_count = function_state.materialized_literal_count(); | 4503 materialized_literal_count = function_state.materialized_literal_count(); |
4504 expected_property_count = function_state.expected_property_count(); | 4504 expected_property_count = function_state.expected_property_count(); |
4505 handler_count = function_state.handler_count(); | 4505 handler_count = function_state.handler_count(); |
4506 | 4506 |
4507 Expect(Token::RBRACE, CHECK_OK); | 4507 Expect(Token::RBRACE, CHECK_OK); |
4508 scope->set_end_position(scanner().location().end_pos); | 4508 scope->set_end_position(scanner().location().end_pos); |
4509 } | 4509 } |
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5933 ASSERT(info()->isolate()->has_pending_exception()); | 5933 ASSERT(info()->isolate()->has_pending_exception()); |
5934 } else { | 5934 } else { |
5935 result = ParseProgram(); | 5935 result = ParseProgram(); |
5936 } | 5936 } |
5937 } | 5937 } |
5938 info()->SetFunction(result); | 5938 info()->SetFunction(result); |
5939 return (result != NULL); | 5939 return (result != NULL); |
5940 } | 5940 } |
5941 | 5941 |
5942 } } // namespace v8::internal | 5942 } } // namespace v8::internal |
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