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_HANDLER_H_ 16 #define COMPILER_PREPROCESSOR_DIRECTIVE_HANDLER_H_ 17 18 #include <string> 19 20 namespace pp 21 { 22 23 struct SourceLocation; 24 25 // Base class for handling directives. 26 // Preprocessor uses this class to notify the clients about certain 27 // preprocessor directives. Derived classes are responsible for 28 // handling them in an appropriate manner. 29 class DirectiveHandler 30 { 31 public: 32 virtual ~DirectiveHandler(); 33 34 virtual void handleError(const SourceLocation& loc, 35 const std::string& msg) = 0; 36 37 // Handle pragma of form: #pragma name[(value)] 38 virtual void handlePragma(const SourceLocation& loc, 39 const std::string& name, 40 const std::string& value) = 0; 41 42 virtual void handleExtension(const SourceLocation& loc, 43 const std::string& name, 44 const std::string& behavior) = 0; 45 46 virtual void handleVersion(const SourceLocation& loc, 47 int version) = 0; 48 }; 49 50 } // namespace pp 51 #endif // COMPILER_PREPROCESSOR_DIRECTIVE_HANDLER_H_ 52