//===- ExternalPreprocessorSource.h - Abstract Macro Interface --*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file defines the ExternalPreprocessorSource interface, which enables // construction of macro definitions from some external source. // //===----------------------------------------------------------------------===// #ifndef LLVM_CLANG_LEX_EXTERNALPREPROCESSORSOURCE_H #define LLVM_CLANG_LEX_EXTERNALPREPROCESSORSOURCE_H namespace clang { class IdentifierInfo; class Module; /// Abstract interface for external sources of preprocessor /// information. /// /// This abstract class allows an external sources (such as the \c ASTReader) /// to provide additional preprocessing information. class ExternalPreprocessorSource { public: virtual ~ExternalPreprocessorSource(); /// Read the set of macros defined by this external macro source. virtual void ReadDefinedMacros() = 0; /// Update an out-of-date identifier. virtual void updateOutOfDateIdentifier(IdentifierInfo &II) = 0; /// Return the identifier associated with the given ID number. /// /// The ID 0 is associated with the NULL identifier. virtual IdentifierInfo *GetIdentifier(unsigned ID) = 0; /// Map a module ID to a module. virtual Module *getModule(unsigned ModuleID) = 0; }; } #endif |