SourceLocation.cpp

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//===- SourceLocation.cpp - Compact identifier for Source Files -----------===//
//
// 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 accessor methods for the FullSourceLoc class.
//
//===----------------------------------------------------------------------===//
 
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/PrettyStackTrace.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/DenseMapInfo.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <string>
#include <utility>
 
using namespace clang;
 
//===----------------------------------------------------------------------===//
// PrettyStackTraceLoc
//===----------------------------------------------------------------------===//
 
void PrettyStackTraceLoc::print(raw_ostream &OS) const {
  if (Loc.isValid()) {
    Loc.print(OS, SM);
    OS << ": ";
  }
  OS << Message << '\n';
}
 
//===----------------------------------------------------------------------===//
// SourceLocation
//===----------------------------------------------------------------------===//
 
static_assert(std::is_trivially_destructible_v<SourceLocation>,
              "SourceLocation must be trivially destructible because it is "
              "used in unions");
 
static_assert(std::is_trivially_destructible_v<SourceRange>,
              "SourceRange must be trivially destructible because it is "
              "used in unions");
 
unsigned SourceLocation::getHashValue() const {
  return llvm::DenseMapInfo<UIntTy>::getHashValue(ID);
}
 
void llvm::FoldingSetTrait<SourceLocation>::Profile(
    const SourceLocation &X, llvm::FoldingSetNodeID &ID) {
  ID.AddInteger(X.ID);
}
 
void SourceLocation::print(raw_ostream &OS, const SourceManager &SM)const{
  if (!isValid()) {
    OS << "<invalid loc>";
    return;
  }
 
  if (isFileID()) {
    PresumedLoc PLoc = SM.getPresumedLoc(*this);
 
    if (PLoc.isInvalid()) {
      OS << "<invalid>";
      return;
    }
    // The macro expansion and spelling pos is identical for file locs.
    OS << PLoc.getFilename() << ':' << PLoc.getLine()
       << ':' << PLoc.getColumn();
    return;
  }
 
  SM.getExpansionLoc(*this).print(OS, SM);
 
  OS << " <Spelling=";
  SM.getSpellingLoc(*this).print(OS, SM);
  OS << '>';
}
 
LLVM_DUMP_METHOD std::string
SourceLocation::printToString(const SourceManager &SM) const {
  std::string S;
  llvm::raw_string_ostream OS(S);
  print(OS, SM);
  return S;
}
 
LLVM_DUMP_METHOD void SourceLocation::dump(const SourceManager &SM) const {
  print(llvm::errs(), SM);
  llvm::errs() << '\n';
}
 
LLVM_DUMP_METHOD void SourceRange::dump(const SourceManager &SM) const {
  print(llvm::errs(), SM);