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Side by Side Diff: src/preparser.h

Issue 203353002: New compilation API, part 2. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: rebased Created 6 years, 9 months ago
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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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80 80
81 template <typename Traits> 81 template <typename Traits>
82 class ParserBase : public Traits { 82 class ParserBase : public Traits {
83 public: 83 public:
84 // Shorten type names defined by Traits. 84 // Shorten type names defined by Traits.
85 typedef typename Traits::Type::Expression ExpressionT; 85 typedef typename Traits::Type::Expression ExpressionT;
86 typedef typename Traits::Type::Identifier IdentifierT; 86 typedef typename Traits::Type::Identifier IdentifierT;
87 87
88 ParserBase(Scanner* scanner, uintptr_t stack_limit, 88 ParserBase(Scanner* scanner, uintptr_t stack_limit,
89 v8::Extension* extension, 89 v8::Extension* extension,
90 ParserRecorder* log,
90 typename Traits::Type::Zone* zone, 91 typename Traits::Type::Zone* zone,
91 typename Traits::Type::Parser this_object) 92 typename Traits::Type::Parser this_object)
92 : Traits(this_object), 93 : Traits(this_object),
93 parenthesized_function_(false), 94 parenthesized_function_(false),
94 scope_(NULL), 95 scope_(NULL),
95 function_state_(NULL), 96 function_state_(NULL),
96 extension_(extension), 97 extension_(extension),
97 fni_(NULL), 98 fni_(NULL),
99 log_(log),
98 scanner_(scanner), 100 scanner_(scanner),
99 stack_limit_(stack_limit), 101 stack_limit_(stack_limit),
100 stack_overflow_(false), 102 stack_overflow_(false),
101 allow_lazy_(false), 103 allow_lazy_(false),
102 allow_natives_syntax_(false), 104 allow_natives_syntax_(false),
103 allow_generators_(false), 105 allow_generators_(false),
104 allow_for_of_(false), 106 allow_for_of_(false),
105 zone_(zone) { } 107 zone_(zone) { }
106 108
107 // Getters that indicate whether certain syntactical constructs are 109 // Getters that indicate whether certain syntactical constructs are
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450 // If true, the next (and immediately following) function literal is 452 // If true, the next (and immediately following) function literal is
451 // preceded by a parenthesis. 453 // preceded by a parenthesis.
452 // Heuristically that means that the function will be called immediately, 454 // Heuristically that means that the function will be called immediately,
453 // so never lazily compile it. 455 // so never lazily compile it.
454 bool parenthesized_function_; 456 bool parenthesized_function_;
455 457
456 typename Traits::Type::Scope* scope_; // Scope stack. 458 typename Traits::Type::Scope* scope_; // Scope stack.
457 FunctionState* function_state_; // Function state stack. 459 FunctionState* function_state_; // Function state stack.
458 v8::Extension* extension_; 460 v8::Extension* extension_;
459 FuncNameInferrer* fni_; 461 FuncNameInferrer* fni_;
462 ParserRecorder* log_;
460 463
461 private: 464 private:
462 Scanner* scanner_; 465 Scanner* scanner_;
463 uintptr_t stack_limit_; 466 uintptr_t stack_limit_;
464 bool stack_overflow_; 467 bool stack_overflow_;
465 468
466 bool allow_lazy_; 469 bool allow_lazy_;
467 bool allow_natives_syntax_; 470 bool allow_natives_syntax_;
468 bool allow_generators_; 471 bool allow_generators_;
469 bool allow_for_of_; 472 bool allow_for_of_;
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941 class PreParser : public ParserBase<PreParserTraits> { 944 class PreParser : public ParserBase<PreParserTraits> {
942 public: 945 public:
943 typedef PreParserIdentifier Identifier; 946 typedef PreParserIdentifier Identifier;
944 typedef PreParserExpression Expression; 947 typedef PreParserExpression Expression;
945 948
946 enum PreParseResult { 949 enum PreParseResult {
947 kPreParseStackOverflow, 950 kPreParseStackOverflow,
948 kPreParseSuccess 951 kPreParseSuccess
949 }; 952 };
950 953
951 PreParser(Scanner* scanner, 954 PreParser(Scanner* scanner, ParserRecorder* log, uintptr_t stack_limit)
952 ParserRecorder* log, 955 : ParserBase<PreParserTraits>(scanner, stack_limit, NULL, log, NULL,
953 uintptr_t stack_limit) 956 this) {}
954 : ParserBase<PreParserTraits>(scanner, stack_limit, NULL, NULL, this),
955 log_(log) {}
956 957
957 // Pre-parse the program from the character stream; returns true on 958 // Pre-parse the program from the character stream; returns true on
958 // success (even if parsing failed, the pre-parse data successfully 959 // success (even if parsing failed, the pre-parse data successfully
959 // captured the syntax error), and false if a stack-overflow happened 960 // captured the syntax error), and false if a stack-overflow happened
960 // during parsing. 961 // during parsing.
961 PreParseResult PreParseProgram() { 962 PreParseResult PreParseProgram() {
962 PreParserScope scope(scope_, GLOBAL_SCOPE); 963 PreParserScope scope(scope_, GLOBAL_SCOPE);
963 FunctionState top_scope(&function_state_, &scope_, &scope, NULL); 964 FunctionState top_scope(&function_state_, &scope_, &scope, NULL);
964 bool ok = true; 965 bool ok = true;
965 int start_position = scanner()->peek_location().beg_pos; 966 int start_position = scanner()->peek_location().beg_pos;
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1104 FunctionLiteral::FunctionType function_type, 1105 FunctionLiteral::FunctionType function_type,
1105 bool* ok); 1106 bool* ok);
1106 void ParseLazyFunctionLiteralBody(bool* ok); 1107 void ParseLazyFunctionLiteralBody(bool* ok);
1107 1108
1108 // Logs the currently parsed literal as a symbol in the preparser data. 1109 // Logs the currently parsed literal as a symbol in the preparser data.
1109 void LogSymbol(); 1110 void LogSymbol();
1110 // Log the currently parsed string literal. 1111 // Log the currently parsed string literal.
1111 Expression GetStringSymbol(); 1112 Expression GetStringSymbol();
1112 1113
1113 bool CheckInOrOf(bool accept_OF); 1114 bool CheckInOrOf(bool accept_OF);
1114
1115 ParserRecorder* log_;
1116 }; 1115 };
1117 1116
1118
1119 template<class Traits> 1117 template<class Traits>
1120 ParserBase<Traits>::FunctionState::FunctionState( 1118 ParserBase<Traits>::FunctionState::FunctionState(
1121 FunctionState** function_state_stack, 1119 FunctionState** function_state_stack,
1122 typename Traits::Type::Scope** scope_stack, 1120 typename Traits::Type::Scope** scope_stack,
1123 typename Traits::Type::Scope* scope, 1121 typename Traits::Type::Scope* scope,
1124 typename Traits::Type::Zone* extra_param) 1122 typename Traits::Type::Zone* extra_param)
1125 : next_materialized_literal_index_(JSFunction::kLiteralsPrefixSize), 1123 : next_materialized_literal_index_(JSFunction::kLiteralsPrefixSize),
1126 next_handler_index_(0), 1124 next_handler_index_(0),
1127 expected_property_count_(0), 1125 expected_property_count_(0),
1128 is_generator_(false), 1126 is_generator_(false),
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1813 "accessor_get_set"); 1811 "accessor_get_set");
1814 } 1812 }
1815 *ok = false; 1813 *ok = false;
1816 } 1814 }
1817 } 1815 }
1818 1816
1819 1817
1820 } } // v8::internal 1818 } } // v8::internal
1821 1819
1822 #endif // V8_PREPARSER_H 1820 #endif // V8_PREPARSER_H
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