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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef VM_PARSER_H_ | 5 #ifndef VM_PARSER_H_ |
6 #define VM_PARSER_H_ | 6 #define VM_PARSER_H_ |
7 | 7 |
8 #include "include/dart_api.h" | 8 #include "include/dart_api.h" |
9 | 9 |
10 #include "vm/ast.h" | 10 #include "vm/ast.h" |
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98 | 98 |
99 int first_parameter_index_; | 99 int first_parameter_index_; |
100 int first_stack_local_index_; | 100 int first_stack_local_index_; |
101 int copied_parameter_count_; | 101 int copied_parameter_count_; |
102 int stack_local_count_; | 102 int stack_local_count_; |
103 | 103 |
104 DISALLOW_COPY_AND_ASSIGN(ParsedFunction); | 104 DISALLOW_COPY_AND_ASSIGN(ParsedFunction); |
105 }; | 105 }; |
106 | 106 |
107 | 107 |
108 // The class TokenStreamIterator encapsulates iteration over the TokenStream | |
109 // object. The parser uses this to iterate over tokens while parsing a script | |
110 // or a function. | |
111 class TokenStreamIterator : ValueObject { | |
112 public: | |
113 TokenStreamIterator(const TokenStream& tokens, intptr_t token_pos) | |
114 : tokens_(tokens), token_position_(token_pos) { } | |
115 | |
116 intptr_t NumberOfTokens() const { return tokens_.Length(); } | |
117 bool IsValid() const; | |
118 | |
119 inline Token::Kind CurrentTokenKind() const; | |
120 Token::Kind LookaheadTokenKind(intptr_t num_tokens) const; | |
121 | |
122 intptr_t CurrentPosition() const { return token_position_; } | |
123 void SetCurrentPosition(intptr_t value) { token_position_ = value; } | |
124 | |
125 void Advance() { token_position_ += 1; } | |
126 | |
127 RawObject* CurrentToken() const; | |
128 RawString* CurrentLiteral() const; | |
129 | |
130 private: | |
131 const TokenStream& tokens_; | |
132 intptr_t token_position_; | |
133 }; | |
134 | |
135 | |
136 class Parser : ValueObject { | 108 class Parser : ValueObject { |
137 public: | 109 public: |
138 Parser(const Script& script, const Library& library); | 110 Parser(const Script& script, const Library& library); |
139 Parser(const Script& script, const Function& function, intptr_t token_pos); | 111 Parser(const Script& script, const Function& function, intptr_t token_pos); |
140 | 112 |
141 // Parse the top level of a whole script file and register declared classes | 113 // Parse the top level of a whole script file and register declared classes |
142 // and interfaces in the given library. | 114 // and interfaces in the given library. |
143 static void ParseCompilationUnit(const Library& library, | 115 static void ParseCompilationUnit(const Library& library, |
144 const Script& script); | 116 const Script& script); |
145 | 117 |
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533 AstNode* InsertClosureCallNodes(AstNode* condition); | 505 AstNode* InsertClosureCallNodes(AstNode* condition); |
534 | 506 |
535 ConstructorCallNode* CreateConstructorCallNode( | 507 ConstructorCallNode* CreateConstructorCallNode( |
536 intptr_t token_pos, | 508 intptr_t token_pos, |
537 const AbstractTypeArguments& type_arguments, | 509 const AbstractTypeArguments& type_arguments, |
538 const Function& constructor, | 510 const Function& constructor, |
539 ArgumentListNode* arguments); | 511 ArgumentListNode* arguments); |
540 | 512 |
541 | 513 |
542 const Script& script_; | 514 const Script& script_; |
543 TokenStreamIterator tokens_iterator_; | 515 TokenStream::Iterator tokens_iterator_; |
544 Token::Kind token_kind_; // Cached token kind for current token. | 516 Token::Kind token_kind_; // Cached token kind for current token. |
545 Block* current_block_; | 517 Block* current_block_; |
546 | 518 |
547 // is_top_level_ is true if parsing the "top level" of a compilation unit, | 519 // is_top_level_ is true if parsing the "top level" of a compilation unit, |
548 // that is interface and class definitions. | 520 // that is interface and class definitions. |
549 bool is_top_level_; | 521 bool is_top_level_; |
550 | 522 |
551 // The member currently being parsed during "top level" parsing. | 523 // The member currently being parsed during "top level" parsing. |
552 MemberDesc* current_member_; | 524 MemberDesc* current_member_; |
553 | 525 |
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576 | 548 |
577 // Allocate temporary only once per function. | 549 // Allocate temporary only once per function. |
578 LocalVariable* expression_temp_; | 550 LocalVariable* expression_temp_; |
579 | 551 |
580 DISALLOW_COPY_AND_ASSIGN(Parser); | 552 DISALLOW_COPY_AND_ASSIGN(Parser); |
581 }; | 553 }; |
582 | 554 |
583 } // namespace dart | 555 } // namespace dart |
584 | 556 |
585 #endif // VM_PARSER_H_ | 557 #endif // VM_PARSER_H_ |
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