Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- 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  /// Update an out-of-date identifier.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