| //===- ExternalPreprocessorSource.h - Abstract Macro Interface --*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the ExternalPreprocessorSource interface, which enables |
| // construction of macro definitions from some external source. |
| // |
| //===----------------------------------------------------------------------===// |
| #ifndef LLVM_CLANG_LEX_EXTERNAL_PREPROCESSOR_SOURCE_H |
| #define LLVM_CLANG_LEX_EXTERNAL_PREPROCESSOR_SOURCE_H |
| |
| namespace clang { |
| |
| class IdentifierInfo; |
| |
| /// \brief Abstract interface for external sources of preprocessor |
| /// information. |
| /// |
| /// This abstract class allows an external sources (such as the \c ASTReader) |
| /// to provide additional macro definitions. |
| class ExternalPreprocessorSource { |
| public: |
| virtual ~ExternalPreprocessorSource(); |
| |
| /// \brief Read the set of macros defined by this external macro source. |
| virtual void ReadDefinedMacros() = 0; |
| |
| /// \brief Update an out-of-date identifier. |
| virtual void updateOutOfDateIdentifier(IdentifierInfo &II) = 0; |
| }; |
| |
| } |
| |
| #endif // LLVM_CLANG_LEX_EXTERNAL_PREPROCESSOR_SOURCE_H |
