PlistSupport.h

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//===- PlistSupport.h - Plist Output Utilities ------------------*- 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
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_BASIC_PLISTSUPPORT_H
#define LLVM_CLANG_BASIC_PLISTSUPPORT_H
 
#include "clang/Basic/LLVM.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <cstdint>
 
namespace clang {
namespace markup {
 
using FIDMap = llvm::DenseMap<FileID, unsigned>;
 
inline unsigned AddFID(FIDMap &FIDs, SmallVectorImpl<FileID> &V,
                   FileID FID) {
  auto [I, Inserted] = FIDs.try_emplace(FID, V.size());
  if (Inserted)
    V.push_back(FID);
  return I->second;
}
 
inline unsigned AddFID(FIDMap &FIDs, SmallVectorImpl<FileID> &V,
                   const SourceManager &SM, SourceLocation L) {
  FileID FID = SM.getFileID(SM.getExpansionLoc(L));
  return AddFID(FIDs, V, FID);
}
 
inline unsigned GetFID(const FIDMap &FIDs, FileID FID) {
  FIDMap::const_iterator I = FIDs.find(FID);
  assert(I != FIDs.end());
  return I->second;
}
 
inline unsigned GetFID(const FIDMap &FIDs, const SourceManager &SM,
                       SourceLocation L) {
  FileID FID = SM.getFileID(SM.getExpansionLoc(L));
  return GetFID(FIDs, FID);
}
 
inline raw_ostream &Indent(raw_ostream &o, const unsigned indent) {
  for (unsigned i = 0; i < indent; ++i)
    o << ' ';
  return o;
}