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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <cmath> | 5 #include <cmath> |
6 | 6 |
7 #include "src/allocation.h" | 7 #include "src/allocation.h" |
8 #include "src/base/logging.h" | 8 #include "src/base/logging.h" |
9 #include "src/conversions-inl.h" | 9 #include "src/conversions-inl.h" |
10 #include "src/conversions.h" | 10 #include "src/conversions.h" |
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686 Consume(Token::CONTINUE); | 686 Consume(Token::CONTINUE); |
687 tail_call_position = position(); | 687 tail_call_position = position(); |
688 tok = peek(); | 688 tok = peek(); |
689 } | 689 } |
690 if (!scanner()->HasAnyLineTerminatorBeforeNext() && | 690 if (!scanner()->HasAnyLineTerminatorBeforeNext() && |
691 tok != Token::SEMICOLON && | 691 tok != Token::SEMICOLON && |
692 tok != Token::RBRACE && | 692 tok != Token::RBRACE && |
693 tok != Token::EOS) { | 693 tok != Token::EOS) { |
694 ParseExpression(true, CHECK_OK); | 694 ParseExpression(true, CHECK_OK); |
695 if (tail_call_position >= 0) { | 695 if (tail_call_position >= 0) { |
696 if (!function_state_->collect_expressions_in_tail_position()) { | 696 ReturnExprContext return_expr_context = |
697 function_state_->return_expr_context(); | |
698 if (return_expr_context != ReturnExprContext::kNormal) { | |
697 Scanner::Location loc(tail_call_position, tail_call_position + 1); | 699 Scanner::Location loc(tail_call_position, tail_call_position + 1); |
698 ReportMessageAt(loc, MessageTemplate::kTailCallInTryBlock); | 700 MessageTemplate::Template msg = |
701 return_expr_context == ReturnExprContext::kInsideTryBlock | |
rossberg
2016/04/27 11:12:01
Use a switch here, to be robust against extensions
Igor Sheludko
2016/04/27 11:39:47
I moved this code to ReportIllegalTailCallAt() to
| |
702 ? MessageTemplate::kTailCallInTryBlock | |
703 : MessageTemplate::kTailCallInForInOf; | |
704 ReportMessageAt(loc, msg); | |
699 *ok = false; | 705 *ok = false; |
700 return Statement::Default(); | 706 return Statement::Default(); |
701 } | 707 } |
702 function_state_->AddExpressionInTailPosition( | 708 function_state_->AddExpressionInTailPosition( |
703 PreParserExpression::Default(), tail_call_position); | 709 PreParserExpression::Default(), tail_call_position); |
704 } | 710 } |
705 } | 711 } |
706 ExpectSemicolon(CHECK_OK); | 712 ExpectSemicolon(CHECK_OK); |
707 return Statement::Jump(); | 713 return Statement::Jump(); |
708 } | 714 } |
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843 | 849 |
844 if (mode == ForEachStatement::ITERATE) { | 850 if (mode == ForEachStatement::ITERATE) { |
845 ExpressionClassifier classifier(this); | 851 ExpressionClassifier classifier(this); |
846 ParseAssignmentExpression(true, &classifier, CHECK_OK); | 852 ParseAssignmentExpression(true, &classifier, CHECK_OK); |
847 RewriteNonPattern(&classifier, CHECK_OK); | 853 RewriteNonPattern(&classifier, CHECK_OK); |
848 } else { | 854 } else { |
849 ParseExpression(true, CHECK_OK); | 855 ParseExpression(true, CHECK_OK); |
850 } | 856 } |
851 | 857 |
852 Expect(Token::RPAREN, CHECK_OK); | 858 Expect(Token::RPAREN, CHECK_OK); |
853 ParseScopedStatement(true, CHECK_OK); | 859 { |
860 ReturnExprScope no_tail_calls(function_state_, | |
861 ReturnExprContext::kInsideForInOfBody); | |
862 ParseScopedStatement(true, CHECK_OK); | |
863 } | |
854 return Statement::Default(); | 864 return Statement::Default(); |
855 } | 865 } |
856 } else { | 866 } else { |
857 int lhs_beg_pos = peek_position(); | 867 int lhs_beg_pos = peek_position(); |
858 ExpressionClassifier classifier(this); | 868 ExpressionClassifier classifier(this); |
859 Expression lhs = ParseExpression(false, &classifier, CHECK_OK); | 869 Expression lhs = ParseExpression(false, &classifier, CHECK_OK); |
860 int lhs_end_pos = scanner()->location().end_pos; | 870 int lhs_end_pos = scanner()->location().end_pos; |
861 bool is_for_each = CheckInOrOf(&mode, ok); | 871 bool is_for_each = CheckInOrOf(&mode, ok); |
862 if (!*ok) return Statement::Default(); | 872 if (!*ok) return Statement::Default(); |
863 bool is_destructuring = is_for_each && | 873 bool is_destructuring = is_for_each && |
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946 // | 956 // |
947 // Catch :: | 957 // Catch :: |
948 // 'catch' '(' Identifier ')' Block | 958 // 'catch' '(' Identifier ')' Block |
949 // | 959 // |
950 // Finally :: | 960 // Finally :: |
951 // 'finally' Block | 961 // 'finally' Block |
952 | 962 |
953 Expect(Token::TRY, CHECK_OK); | 963 Expect(Token::TRY, CHECK_OK); |
954 | 964 |
955 { | 965 { |
956 DontCollectExpressionsInTailPositionScope no_tail_calls(function_state_); | 966 ReturnExprScope no_tail_calls(function_state_, |
967 ReturnExprContext::kInsideTryBlock); | |
957 ParseBlock(CHECK_OK); | 968 ParseBlock(CHECK_OK); |
958 } | 969 } |
959 | 970 |
960 Token::Value tok = peek(); | 971 Token::Value tok = peek(); |
961 if (tok != Token::CATCH && tok != Token::FINALLY) { | 972 if (tok != Token::CATCH && tok != Token::FINALLY) { |
962 ReportMessageAt(scanner()->location(), MessageTemplate::kNoCatchOrFinally); | 973 ReportMessageAt(scanner()->location(), MessageTemplate::kNoCatchOrFinally); |
963 *ok = false; | 974 *ok = false; |
964 return Statement::Default(); | 975 return Statement::Default(); |
965 } | 976 } |
966 List<TailCallExpression> expressions_in_tail_position_in_catch_block; | 977 List<TailCallExpression> expressions_in_tail_position_in_catch_block; |
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1192 } | 1203 } |
1193 Expect(Token::RBRACE, CHECK_OK); | 1204 Expect(Token::RBRACE, CHECK_OK); |
1194 return PreParserExpression::Default(); | 1205 return PreParserExpression::Default(); |
1195 } | 1206 } |
1196 | 1207 |
1197 #undef CHECK_OK | 1208 #undef CHECK_OK |
1198 | 1209 |
1199 | 1210 |
1200 } // namespace internal | 1211 } // namespace internal |
1201 } // namespace v8 | 1212 } // namespace v8 |
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