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_EXTERNAL_PREPROCESSOR_SOURCE_H 00015 #define LLVM_CLANG_LEX_EXTERNAL_PREPROCESSOR_SOURCE_H 00016 00017 namespace clang { 00018 00019 /// \brief Abstract interface for external sources of preprocessor 00020 /// information. 00021 /// 00022 /// This abstract class allows an external sources (such as the \c ASTReader) 00023 /// to provide additional macro definitions. 00024 class ExternalPreprocessorSource { 00025 public: 00026 virtual ~ExternalPreprocessorSource(); 00027 00028 /// \brief Read the set of macros defined by this external macro source. 00029 virtual void ReadDefinedMacros() = 0; 00030 00031 /// \brief Read the definition for the given macro. 00032 virtual void LoadMacroDefinition(IdentifierInfo *II) = 0; 00033 00034 /// \brief Update an out-of-date identifier. 00035 virtual void updateOutOfDateIdentifier(IdentifierInfo &II) = 0; 00036 }; 00037 00038 } 00039 00040 #endif // LLVM_CLANG_LEX_EXTERNAL_PREPROCESSOR_SOURCE_H