1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef COMPILER_PREPROCESSOR_DIRECTIVE_PARSER_H_ 16 #define COMPILER_PREPROCESSOR_DIRECTIVE_PARSER_H_ 17 18 #include "Lexer.h" 19 #include "Macro.h" 20 #include "pp_utils.h" 21 #include "SourceLocation.h" 22 23 namespace pp 24 { 25 26 class Diagnostics; 27 class DirectiveHandler; 28 class Tokenizer; 29 30 class DirectiveParser : public Lexer 31 { 32 public: 33 DirectiveParser(Tokenizer* tokenizer, 34 MacroSet* macroSet, 35 Diagnostics* diagnostics, 36 DirectiveHandler* directiveHandler); 37 38 virtual void lex(Token* token); 39 40 private: 41 PP_DISALLOW_COPY_AND_ASSIGN(DirectiveParser); 42 43 void parseDirective(Token* token); 44 void parseDefine(Token* token); 45 void parseUndef(Token* token); 46 void parseIf(Token* token); 47 void parseIfdef(Token* token); 48 void parseIfndef(Token* token); 49 void parseElse(Token* token); 50 void parseElif(Token* token); 51 void parseEndif(Token* token); 52 void parseError(Token* token); 53 void parsePragma(Token* token); 54 void parseExtension(Token* token); 55 void parseVersion(Token* token); 56 void parseLine(Token* token); 57 58 bool skipping() const; 59 void parseConditionalIf(Token* token); 60 int parseExpressionIf(Token* token); 61 int parseExpressionIfdef(Token* token); 62 63 struct ConditionalBlock 64 { 65 std::string type; 66 SourceLocation location; 67 bool skipBlock; 68 bool skipGroup; 69 bool foundValidGroup; 70 bool foundElseGroup; 71 72 ConditionalBlock() : 73 skipBlock(false), 74 skipGroup(false), 75 foundValidGroup(false), 76 foundElseGroup(false) 77 { 78 } 79 }; 80 bool mPastFirstStatement; 81 std::vector<ConditionalBlock> mConditionalStack; 82 Tokenizer* mTokenizer; 83 MacroSet* mMacroSet; 84 Diagnostics* mDiagnostics; 85 DirectiveHandler* mDirectiveHandler; 86 }; 87 88 } // namespace pp 89 #endif // COMPILER_PREPROCESSOR_DIRECTIVE_PARSER_H_ 90 91
