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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 // 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 #ifndef V8_PARSING_PREPARSER_H | 5 #ifndef V8_PARSING_PREPARSER_H |
6 #define V8_PARSING_PREPARSER_H | 6 #define V8_PARSING_PREPARSER_H |
7 | 7 |
8 #include "src/ast/scopes.h" | 8 #include "src/ast/scopes.h" |
9 #include "src/parsing/parser-base.h" | 9 #include "src/parsing/parser-base.h" |
10 | 10 |
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607 typedef PreParserExpression YieldExpression; | 607 typedef PreParserExpression YieldExpression; |
608 typedef PreParserExpression FunctionLiteral; | 608 typedef PreParserExpression FunctionLiteral; |
609 typedef PreParserExpression ClassLiteral; | 609 typedef PreParserExpression ClassLiteral; |
610 typedef PreParserExpression Literal; | 610 typedef PreParserExpression Literal; |
611 typedef PreParserExpression ObjectLiteralProperty; | 611 typedef PreParserExpression ObjectLiteralProperty; |
612 typedef PreParserExpressionList ExpressionList; | 612 typedef PreParserExpressionList ExpressionList; |
613 typedef PreParserExpressionList PropertyList; | 613 typedef PreParserExpressionList PropertyList; |
614 typedef PreParserIdentifier FormalParameter; | 614 typedef PreParserIdentifier FormalParameter; |
615 typedef PreParserFormalParameters FormalParameters; | 615 typedef PreParserFormalParameters FormalParameters; |
616 typedef PreParserStatementList StatementList; | 616 typedef PreParserStatementList StatementList; |
| 617 typedef PreParserStatement Block; |
617 | 618 |
618 // For constructing objects returned by the traversing functions. | 619 // For constructing objects returned by the traversing functions. |
619 typedef PreParserFactory Factory; | 620 typedef PreParserFactory Factory; |
620 }; | 621 }; |
621 | 622 |
622 | 623 |
623 // Preparsing checks a JavaScript program and emits preparse-data that helps | 624 // Preparsing checks a JavaScript program and emits preparse-data that helps |
624 // a later parsing to be faster. | 625 // a later parsing to be faster. |
625 // See preparse-data-format.h for the data format. | 626 // See preparse-data-format.h for the data format. |
626 | 627 |
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729 Statement ParseHoistableDeclaration(bool* ok); | 730 Statement ParseHoistableDeclaration(bool* ok); |
730 Statement ParseHoistableDeclaration(int pos, ParseFunctionFlags flags, | 731 Statement ParseHoistableDeclaration(int pos, ParseFunctionFlags flags, |
731 bool* ok); | 732 bool* ok); |
732 Statement ParseFunctionDeclaration(bool* ok); | 733 Statement ParseFunctionDeclaration(bool* ok); |
733 Statement ParseAsyncFunctionDeclaration(bool* ok); | 734 Statement ParseAsyncFunctionDeclaration(bool* ok); |
734 Expression ParseAsyncFunctionExpression(bool* ok); | 735 Expression ParseAsyncFunctionExpression(bool* ok); |
735 Statement ParseClassDeclaration(bool* ok); | 736 Statement ParseClassDeclaration(bool* ok); |
736 Statement ParseBlock(bool* ok); | 737 Statement ParseBlock(bool* ok); |
737 Statement ParseVariableStatement(VariableDeclarationContext var_context, | 738 Statement ParseVariableStatement(VariableDeclarationContext var_context, |
738 bool* ok); | 739 bool* ok); |
739 Statement ParseVariableDeclarations(VariableDeclarationContext var_context, | |
740 int* num_decl, bool* is_lexical, | |
741 bool* is_binding_pattern, | |
742 Scanner::Location* first_initializer_loc, | |
743 Scanner::Location* bindings_loc, | |
744 bool* ok); | |
745 Statement ParseExpressionOrLabelledStatement( | 740 Statement ParseExpressionOrLabelledStatement( |
746 AllowLabelledFunctionStatement allow_function, bool* ok); | 741 AllowLabelledFunctionStatement allow_function, bool* ok); |
747 Statement ParseIfStatement(bool* ok); | 742 Statement ParseIfStatement(bool* ok); |
748 Statement ParseContinueStatement(bool* ok); | 743 Statement ParseContinueStatement(bool* ok); |
749 Statement ParseBreakStatement(bool* ok); | 744 Statement ParseBreakStatement(bool* ok); |
750 Statement ParseReturnStatement(bool* ok); | 745 Statement ParseReturnStatement(bool* ok); |
751 Statement ParseWithStatement(bool* ok); | 746 Statement ParseWithStatement(bool* ok); |
752 Statement ParseSwitchStatement(bool* ok); | 747 Statement ParseSwitchStatement(bool* ok); |
753 Statement ParseDoWhileStatement(bool* ok); | 748 Statement ParseDoWhileStatement(bool* ok); |
754 Statement ParseWhileStatement(bool* ok); | 749 Statement ParseWhileStatement(bool* ok); |
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831 RewriteAwaitExpression(PreParserExpression value, int pos) { | 826 RewriteAwaitExpression(PreParserExpression value, int pos) { |
832 return value; | 827 return value; |
833 } | 828 } |
834 V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression generator, | 829 V8_INLINE PreParserExpression RewriteYieldStar(PreParserExpression generator, |
835 PreParserExpression expression, | 830 PreParserExpression expression, |
836 int pos) { | 831 int pos) { |
837 return PreParserExpression::Default(); | 832 return PreParserExpression::Default(); |
838 } | 833 } |
839 V8_INLINE void RewriteNonPattern(bool* ok) { ValidateExpression(ok); } | 834 V8_INLINE void RewriteNonPattern(bool* ok) { ValidateExpression(ok); } |
840 | 835 |
| 836 V8_INLINE void DeclareAndInitializeVariables( |
| 837 PreParserStatement block, |
| 838 const DeclarationDescriptor* declaration_descriptor, |
| 839 const DeclarationParsingResult::Declaration* declaration, |
| 840 ZoneList<const AstRawString*>* names, bool* ok) {} |
| 841 |
841 V8_INLINE void QueueDestructuringAssignmentForRewriting( | 842 V8_INLINE void QueueDestructuringAssignmentForRewriting( |
842 PreParserExpression assignment) {} | 843 PreParserExpression assignment) {} |
843 V8_INLINE void QueueNonPatternForRewriting(PreParserExpression expr, | 844 V8_INLINE void QueueNonPatternForRewriting(PreParserExpression expr, |
844 bool* ok) {} | 845 bool* ok) {} |
845 | 846 |
846 // Helper functions for recursive descent. | 847 // Helper functions for recursive descent. |
847 V8_INLINE bool IsEval(PreParserIdentifier identifier) const { | 848 V8_INLINE bool IsEval(PreParserIdentifier identifier) const { |
848 return identifier.IsEval(); | 849 return identifier.IsEval(); |
849 } | 850 } |
850 | 851 |
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910 } | 911 } |
911 | 912 |
912 // Functions for encapsulating the differences between parsing and preparsing; | 913 // Functions for encapsulating the differences between parsing and preparsing; |
913 // operations interleaved with the recursive descent. | 914 // operations interleaved with the recursive descent. |
914 V8_INLINE static void PushLiteralName(FuncNameInferrer* fni, | 915 V8_INLINE static void PushLiteralName(FuncNameInferrer* fni, |
915 PreParserIdentifier id) { | 916 PreParserIdentifier id) { |
916 // PreParser should not use FuncNameInferrer. | 917 // PreParser should not use FuncNameInferrer. |
917 UNREACHABLE(); | 918 UNREACHABLE(); |
918 } | 919 } |
919 | 920 |
| 921 V8_INLINE static void PushVariableName(FuncNameInferrer* fni, |
| 922 PreParserIdentifier id) { |
| 923 // PreParser should not use FuncNameInferrer. |
| 924 UNREACHABLE(); |
| 925 } |
| 926 |
920 V8_INLINE void PushPropertyName(FuncNameInferrer* fni, | 927 V8_INLINE void PushPropertyName(FuncNameInferrer* fni, |
921 PreParserExpression expression) { | 928 PreParserExpression expression) { |
922 // PreParser should not use FuncNameInferrer. | 929 // PreParser should not use FuncNameInferrer. |
923 UNREACHABLE(); | 930 UNREACHABLE(); |
924 } | 931 } |
925 | 932 |
926 V8_INLINE static void InferFunctionName(FuncNameInferrer* fni, | 933 V8_INLINE static void InferFunctionName(FuncNameInferrer* fni, |
927 PreParserExpression expression) { | 934 PreParserExpression expression) { |
928 // PreParser should not use FuncNameInferrer. | 935 // PreParser should not use FuncNameInferrer. |
929 UNREACHABLE(); | 936 UNREACHABLE(); |
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1004 return PreParserExpression::Default(); | 1011 return PreParserExpression::Default(); |
1005 } | 1012 } |
1006 | 1013 |
1007 V8_INLINE static bool IsEmptyExpression(PreParserExpression expr) { | 1014 V8_INLINE static bool IsEmptyExpression(PreParserExpression expr) { |
1008 return expr.IsEmpty(); | 1015 return expr.IsEmpty(); |
1009 } | 1016 } |
1010 | 1017 |
1011 V8_INLINE static PreParserExpressionList NullExpressionList() { | 1018 V8_INLINE static PreParserExpressionList NullExpressionList() { |
1012 return PreParserExpressionList(); | 1019 return PreParserExpressionList(); |
1013 } | 1020 } |
| 1021 |
1014 V8_INLINE static PreParserStatementList NullStatementList() { | 1022 V8_INLINE static PreParserStatementList NullStatementList() { |
1015 return PreParserStatementList(); | 1023 return PreParserStatementList(); |
1016 } | 1024 } |
| 1025 |
| 1026 V8_INLINE static PreParserStatement NullBlock() { |
| 1027 return PreParserStatement::Default(); |
| 1028 } |
| 1029 |
1017 V8_INLINE PreParserIdentifier EmptyIdentifierString() const { | 1030 V8_INLINE PreParserIdentifier EmptyIdentifierString() const { |
1018 return PreParserIdentifier::Default(); | 1031 return PreParserIdentifier::Default(); |
1019 } | 1032 } |
1020 | 1033 |
1021 // Odd-ball literal creators. | 1034 // Odd-ball literal creators. |
1022 V8_INLINE PreParserExpression GetLiteralTheHole(int position) { | 1035 V8_INLINE PreParserExpression GetLiteralTheHole(int position) { |
1023 return PreParserExpression::Default(); | 1036 return PreParserExpression::Default(); |
1024 } | 1037 } |
1025 | 1038 |
| 1039 V8_INLINE PreParserExpression GetLiteralUndefined(int position) { |
| 1040 return PreParserExpression::Default(); |
| 1041 } |
| 1042 |
1026 // Producing data during the recursive descent. | 1043 // Producing data during the recursive descent. |
1027 PreParserIdentifier GetSymbol() const; | 1044 PreParserIdentifier GetSymbol() const; |
1028 | 1045 |
1029 V8_INLINE PreParserIdentifier GetNextSymbol() const { | 1046 V8_INLINE PreParserIdentifier GetNextSymbol() const { |
1030 return PreParserIdentifier::Default(); | 1047 return PreParserIdentifier::Default(); |
1031 } | 1048 } |
1032 | 1049 |
1033 V8_INLINE PreParserIdentifier GetNumberAsSymbol() const { | 1050 V8_INLINE PreParserIdentifier GetNumberAsSymbol() const { |
1034 return PreParserIdentifier::Default(); | 1051 return PreParserIdentifier::Default(); |
1035 } | 1052 } |
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1077 } | 1094 } |
1078 | 1095 |
1079 V8_INLINE PreParserExpressionList NewPropertyList(int size) const { | 1096 V8_INLINE PreParserExpressionList NewPropertyList(int size) const { |
1080 return PreParserExpressionList(); | 1097 return PreParserExpressionList(); |
1081 } | 1098 } |
1082 | 1099 |
1083 V8_INLINE PreParserStatementList NewStatementList(int size) const { | 1100 V8_INLINE PreParserStatementList NewStatementList(int size) const { |
1084 return PreParserStatementList(); | 1101 return PreParserStatementList(); |
1085 } | 1102 } |
1086 | 1103 |
| 1104 V8_INLINE static PreParserStatement NewBlock( |
| 1105 ZoneList<const AstRawString*>* labels, int capacity, |
| 1106 bool ignore_completion_value, int pos) { |
| 1107 return PreParserStatement::Default(); |
| 1108 } |
| 1109 |
1087 V8_INLINE void AddParameterInitializationBlock( | 1110 V8_INLINE void AddParameterInitializationBlock( |
1088 const PreParserFormalParameters& parameters, PreParserStatementList body, | 1111 const PreParserFormalParameters& parameters, PreParserStatementList body, |
1089 bool is_async, bool* ok) {} | 1112 bool is_async, bool* ok) {} |
1090 | 1113 |
1091 V8_INLINE void AddFormalParameter(PreParserFormalParameters* parameters, | 1114 V8_INLINE void AddFormalParameter(PreParserFormalParameters* parameters, |
1092 PreParserExpression pattern, | 1115 PreParserExpression pattern, |
1093 PreParserExpression initializer, | 1116 PreParserExpression initializer, |
1094 int initializer_end_position, | 1117 int initializer_end_position, |
1095 bool is_rest) { | 1118 bool is_rest) { |
1096 ++parameters->arity; | 1119 ++parameters->arity; |
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1192 function_state_->NextMaterializedLiteralIndex(); | 1215 function_state_->NextMaterializedLiteralIndex(); |
1193 function_state_->NextMaterializedLiteralIndex(); | 1216 function_state_->NextMaterializedLiteralIndex(); |
1194 } | 1217 } |
1195 return EmptyExpression(); | 1218 return EmptyExpression(); |
1196 } | 1219 } |
1197 | 1220 |
1198 } // namespace internal | 1221 } // namespace internal |
1199 } // namespace v8 | 1222 } // namespace v8 |
1200 | 1223 |
1201 #endif // V8_PARSING_PREPARSER_H | 1224 #endif // V8_PARSING_PREPARSER_H |
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