1// Copyright 2017 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_DIRECTIVEHANDLERBASE_H_ 16#define COMPILER_PREPROCESSOR_DIRECTIVEHANDLERBASE_H_ 17 18#include <string> 19 20namespace pp 21{ 22 23struct 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. 29class DirectiveHandler 30{ 31 public: 32 virtual ~DirectiveHandler(); 33 34 virtual void handleError(const SourceLocation &loc, const std::string &msg) = 0; 35 36 // Handle pragma of form: #pragma name[(value)] 37 virtual void handlePragma(const SourceLocation &loc, 38 const std::string &name, 39 const std::string &value, 40 bool stdgl) = 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, int version) = 0; 47}; 48 49} // namespace pp 50 51#endif // COMPILER_PREPROCESSOR_DIRECTIVEHANDLERBASE_H_ 52