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 //

 // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.

 // Use of this source code is governed by a BSD-style license that can be

 // found in the LICENSE file.

 //

 #ifndef COMPILER_PREPROCESSOR_DIRECTIVE_HANDLER_H_

 #define COMPILER_PREPROCESSOR_DIRECTIVE_HANDLER_H_

 #include <string>

 namespace pp

 {

 struct SourceLocation;

 // Base class for handling directives.

 // Preprocessor uses this class to notify the clients about certain

 // preprocessor directives. Derived classes are responsible for

 // handling them in an appropriate manner.

 class DirectiveHandler

 {

   public:

     virtual ~DirectiveHandler();

     virtual void handleError(const SourceLocation& loc,

                              const std::string& msg) = 0;

     // Handle pragma of form: #pragma name[(value)]

     virtual void handlePragma(const SourceLocation& loc,

                               const std::string& name,

                               const std::string& value) = 0;

     virtual void handleExtension(const SourceLocation& loc,

                                  const std::string& name,

                                  const std::string& behavior) = 0;

     virtual void handleVersion(const SourceLocation& loc,

                                int version) = 0;

 };

 }  // namespace pp

 #endif  // COMPILER_PREPROCESSOR_DIRECTIVE_HANDLER_H_