clang API Documentation
00001 //===- ExternalPreprocessorSource.h - Abstract Macro Interface --*- C++ -*-===// 00002 // 00003 // The LLVM Compiler Infrastructure 00004 // 00005 // This file is distributed under the University of Illinois Open Source 00006 // License. See LICENSE.TXT for details. 00007 // 00008 //===----------------------------------------------------------------------===// 00009 // 00010 // This file defines the ExternalPreprocessorSource interface, which enables 00011 // construction of macro definitions from some external source. 00012 // 00013 //===----------------------------------------------------------------------===// 00014 #ifndef LLVM_CLANG_LEX_EXTERNALPREPROCESSORSOURCE_H 00015 #define LLVM_CLANG_LEX_EXTERNALPREPROCESSORSOURCE_H 00016 00017 namespace clang { 00018 00019 class IdentifierInfo; 00020 00021 /// \brief Abstract interface for external sources of preprocessor 00022 /// information. 00023 /// 00024 /// This abstract class allows an external sources (such as the \c ASTReader) 00025 /// to provide additional macro definitions. 00026 class ExternalPreprocessorSource { 00027 public: 00028 virtual ~ExternalPreprocessorSource(); 00029 00030 /// \brief Read the set of macros defined by this external macro source. 00031 virtual void ReadDefinedMacros() = 0; 00032 00033 /// \brief Update an out-of-date identifier. 00034 virtual void updateOutOfDateIdentifier(IdentifierInfo &II) = 0; 00035 }; 00036 00037 } 00038 00039 #endif