PPConditionalDirectiveRecord.h

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//===--- PPConditionalDirectiveRecord.h - Preprocessing Directives-*- 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 PPConditionalDirectiveRecord class, which maintains
//  a record of conditional directive regions.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LEX_PPCONDITIONALDIRECTIVERECORD_H
#define LLVM_CLANG_LEX_PPCONDITIONALDIRECTIVERECORD_H
 
#include "clang/Basic/SourceLocation.h"
#include "clang/Lex/PPCallbacks.h"
#include "llvm/ADT/SmallVector.h"
#include <vector>
 
namespace clang {
 
/// Records preprocessor conditional directive regions and allows
/// querying in which region source locations belong to.
class PPConditionalDirectiveRecord : public PPCallbacks {
  SourceManager &SourceMgr;
 
  SmallVector<SourceLocation, 6> CondDirectiveStack;
 
  class CondDirectiveLoc {
    SourceLocation Loc;
    SourceLocation RegionLoc;
 
  public:
    CondDirectiveLoc(SourceLocation Loc, SourceLocation RegionLoc)