llvm/clang/include/clang/Lex/ExternalPreprocessorSource.h

//===- 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

#include <cassert>
#include <cstdint>
  
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 { … };

// Either a pointer to an IdentifierInfo of the controlling macro or the ID
// number of the controlling macro.
class LazyIdentifierInfoPtr { … };
}

#endif