C++ PresumedLoc::getFilename方法代码示例

/// HandlePragmaSystemHeader - Implement #pragma GCC system_header.  We know
/// that the whole directive has been parsed.
void Preprocessor::HandlePragmaSystemHeader(Token &SysHeaderTok) {
  if (isInPrimaryFile()) {
    Diag(SysHeaderTok, diag::pp_pragma_sysheader_in_main_file);
    return;
  }

  // Get the current file lexer we're looking at.  Ignore _Pragma 'files' etc.
  PreprocessorLexer *TheLexer = getCurrentFileLexer();

  // Mark the file as a system header.
  HeaderInfo.MarkFileSystemHeader(TheLexer->getFileEntry());


  PresumedLoc PLoc = SourceMgr.getPresumedLoc(SysHeaderTok.getLocation());
  unsigned FilenameLen = strlen(PLoc.getFilename());
  unsigned FilenameID = SourceMgr.getLineTableFilenameID(PLoc.getFilename(),
                                                         FilenameLen);

  // Emit a line marker.  This will change any source locations from this point
  // forward to realize they are in a system header.
  // Create a line note with this information.
  SourceMgr.AddLineNote(SysHeaderTok.getLocation(), PLoc.getLine(), FilenameID,
                        false, false, true, false);

  // Notify the client, if desired, that we are in a new source file.
  if (Callbacks)
    Callbacks->FileChanged(SysHeaderTok.getLocation(),
                           PPCallbacks::SystemHeaderPragma, SrcMgr::C_System);
}

//---------------------------------------------------------
void DocumentXML::addLocationRange(const SourceRange& R)
{
  PresumedLoc PStartLoc = addLocation(R.getBegin());
  if (R.getBegin() != R.getEnd())
  {
    SourceManager& SM = Ctx->getSourceManager();
    SourceLocation SpellingLoc = SM.getSpellingLoc(R.getEnd());
    if (!SpellingLoc.isInvalid())
    {
      PresumedLoc PLoc = SM.getPresumedLoc(SpellingLoc);
      if (PStartLoc.isInvalid() ||
          strcmp(PLoc.getFilename(), PStartLoc.getFilename()) != 0) {
        addToMap(SourceFiles, PLoc.getFilename(), ID_FILE);
        addAttribute("endfile", PLoc.getFilename());
        addAttribute("endline", PLoc.getLine());
        addAttribute("endcol", PLoc.getColumn());
      } else if (PLoc.getLine() != PStartLoc.getLine()) {
        addAttribute("endline", PLoc.getLine());
        addAttribute("endcol", PLoc.getColumn());
      } else {
        addAttribute("endcol", PLoc.getColumn());
      }
    }
  }
}

void ASTDumper::dumpLocation(SourceLocation Loc) {
  SourceLocation SpellingLoc = SM->getSpellingLoc(Loc);

  // The general format we print out is filename:line:col, but we drop pieces
  // that haven't changed since the last loc printed.
  PresumedLoc PLoc = SM->getPresumedLoc(SpellingLoc);

  if (PLoc.isInvalid()) {
    OS << "<invalid sloc>";
    return;
  }

  if (strcmp(PLoc.getFilename(), LastLocFilename) != 0) {
    OS << PLoc.getFilename() << ':' << PLoc.getLine()
       << ':' << PLoc.getColumn();
    LastLocFilename = PLoc.getFilename();
    LastLocLine = PLoc.getLine();
  } else if (PLoc.getLine() != LastLocLine) {
    OS << "line" << ':' << PLoc.getLine()
       << ':' << PLoc.getColumn();
    LastLocLine = PLoc.getLine();
  } else {
    OS << "col" << ':' << PLoc.getColumn();
  }
}

void TextDiagnostic::emitImportLocation(SourceLocation Loc, PresumedLoc PLoc,
                                        StringRef ModuleName,
                                        const SourceManager &SM) {
  if (DiagOpts->ShowLocation && PLoc.getFilename())
    OS << "In module '" << ModuleName << "' imported from "
       << PLoc.getFilename() << ':' << PLoc.getLine() << ":\n";
  else
    OS << "In module '" << ModuleName << "':\n";
}

void TextDiagnostic::emitIncludeLocation(SourceLocation Loc,
                                         PresumedLoc PLoc,
                                         const SourceManager &SM) {
  if (DiagOpts->ShowLocation && PLoc.getFilename())
    OS << "In file included from " << PLoc.getFilename() << ':'
       << PLoc.getLine() << ":\n";
  else
    OS << "In included file:\n"; 
}

void HeaderIncludesCallback::FileChanged(SourceLocation Loc,
                                         FileChangeReason Reason,
                                       SrcMgr::CharacteristicKind NewFileType,
                                       FileID PrevFID) {
  // Unless we are exiting a #include, make sure to skip ahead to the line the
  // #include directive was at.
  PresumedLoc UserLoc = SM.getPresumedLoc(Loc);
  if (UserLoc.isInvalid())
    return;

  // Adjust the current include depth.
  if (Reason == PPCallbacks::EnterFile) {
    ++CurrentIncludeDepth;
  } else if (Reason == PPCallbacks::ExitFile) {
    if (CurrentIncludeDepth)
      --CurrentIncludeDepth;

    // We track when we are done with the predefines by watching for the first
    // place where we drop back to a nesting depth of 1.
    if (CurrentIncludeDepth == 1 && !HasProcessedPredefines) {
      if (!DepOpts.ShowIncludesPretendHeader.empty()) {
        PrintHeaderInfo(OutputFile, DepOpts.ShowIncludesPretendHeader,
                        ShowDepth, 2, MSStyle);
      }
      HasProcessedPredefines = true;
    }

    return;
  } else
    return;

  // Show the header if we are (a) past the predefines, or (b) showing all
  // headers and in the predefines at a depth past the initial file and command
  // line buffers.
  bool ShowHeader = (HasProcessedPredefines ||
                     (ShowAllHeaders && CurrentIncludeDepth > 2));
  unsigned IncludeDepth = CurrentIncludeDepth;
  if (!HasProcessedPredefines)
    --IncludeDepth; // Ignore indent from <built-in>.
  else if (!DepOpts.ShowIncludesPretendHeader.empty())
    ++IncludeDepth; // Pretend inclusion by ShowIncludesPretendHeader.

  // Dump the header include information we are past the predefines buffer or
  // are showing all headers and this isn't the magic implicit <command line>
  // header.
  // FIXME: Identify headers in a more robust way than comparing their name to
  // "<command line>" and "<built-in>" in a bunch of places.
  if (ShowHeader && Reason == PPCallbacks::EnterFile &&
      UserLoc.getFilename() != StringRef("<command line>")) {
    PrintHeaderInfo(OutputFile, UserLoc.getFilename(), ShowDepth, IncludeDepth,
                    MSStyle);
  }
}

void
DiagnosticNoteRenderer::emitBuildingModuleLocation(SourceLocation Loc,
                                                   PresumedLoc PLoc,
                                                   StringRef ModuleName,
                                                   const SourceManager &SM) {
  // Generate a note indicating the include location.
  SmallString<200> MessageStorage;
  llvm::raw_svector_ostream Message(MessageStorage);
  if (PLoc.getFilename())
    Message << "while building module '" << ModuleName << "' imported from "
            << PLoc.getFilename() << ':' << PLoc.getLine() << ":";
  else
    Message << "while building module '" << ModuleName << "':";
  emitNote(Loc, Message.str(), &SM);
}

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 << '>';
}

void lfort_getPresumedLocation(CXSourceLocation location,
                               CXString *filename,
                               unsigned *line,
                               unsigned *column) {
  
  if (!isASTUnitSourceLocation(location)) {
    // Other SourceLocation implementations do not support presumed locations
    // at this time.
    createNullLocation(filename, line, column);
    return;
  }

  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);

  if (!location.ptr_data[0] || Loc.isInvalid())
    createNullLocation(filename, line, column);
  else {
    const SourceManager &SM =
    *static_cast<const SourceManager*>(location.ptr_data[0]);
    PresumedLoc PreLoc = SM.getPresumedLoc(Loc);
    
    if (filename)
      *filename = createCXString(PreLoc.getFilename());
    if (line)
      *line = PreLoc.getLine();
    if (column)
      *column = PreLoc.getColumn();
  }
}

void TextDiagnostic::emitIncludeLocation(FullSourceLoc Loc, PresumedLoc PLoc) {
  if (DiagOpts->ShowLocation && PLoc.isValid())
    OS << "In file included from " << PLoc.getFilename() << ':'
       << PLoc.getLine() << ":\n";
  else
    OS << "In included file:\n";
}

void TypePrinter::printStructBefore(const StructType *T, raw_ostream &OS) {
  //if (Policy.SuppressTag)
    //return;

  //bool HasKindDecoration = false;

  // We don't print tags unless this is an elaborated type.
  // In C, we just assume every RecordType is an elaborated type.
  //if (!(Policy.LangOpts.CPlusPlus || Policy.SuppressTagKeyword ||
        //D->getTypedefNameForAnonDecl())) {
    //HasKindDecoration = true;
    //OS << D->getKindName();
    //OS << ' ';
  //}

  // Compute the full nested-name-specifier for this type.
  // In C, this will always be empty except when the type
  // being printed is anonymous within other Record.
  //if (!Policy.SuppressScope)
    //AppendScope(D->getDeclContext(), OS);

  //if (const IdentifierInfo *II = D->getIdentifier())
    //OS << II->getName();
  //else if (TypedefNameDecl *Typedef = D->getTypedefNameForAnonDecl()) {
    //assert(Typedef->getIdentifier() && "Typedef without identifier?");
    //OS << Typedef->getIdentifier()->getName();
  //} else {
    // Make an unambiguous representation for anonymous types, e.g.
    //   <anonymous enum at /usr/include/string.h:120:9>
    
    //if (isa<CXXRecordDecl>(D) && cast<CXXRecordDecl>(D)->isLambda()) {
      //OS << "<lambda";
      //HasKindDecoration = true;
    //} else {
      //OS << "<anonymous";
    //}
    
    //if (Policy.AnonymousTagLocations) {
      // Suppress the redundant tag keyword if we just printed one.
      // We don't have to worry about ElaboratedTypes here because you can't
      // refer to an anonymous type with one.
      //if (!HasKindDecoration)
        OS << "<struct";

      PresumedLoc PLoc =
          PresumedLoc::build(T->getDecl()->getASTContext().getSourceManager(),
                             T->getDecl()->getLocation());
      if (PLoc.isValid()) {
        OS << " at " << PLoc.getFilename()
           << ':' << PLoc.getLine()
           << ':' << PLoc.getColumn();
      }
    //}
    
    OS << '>';
  //}

  spaceBeforePlaceHolder(OS);
}

void HeaderIncludesCallback::FileChanged(SourceLocation Loc,
                                         FileChangeReason Reason,
                                       SrcMgr::CharacteristicKind NewFileType,
                                       FileID PrevFID) {
  // Unless we are exiting a #include, make sure to skip ahead to the line the
  // #include directive was at.
  PresumedLoc UserLoc = SM.getPresumedLoc(Loc);
  if (UserLoc.isInvalid())
    return;

  // Adjust the current include depth.
  if (Reason == PPCallbacks::EnterFile) {
    ++CurrentIncludeDepth;
  } else if (Reason == PPCallbacks::ExitFile) {
    if (CurrentIncludeDepth)
      --CurrentIncludeDepth;

    // We track when we are done with the predefines by watching for the first
    // place where we drop back to a nesting depth of 1.
    if (CurrentIncludeDepth == 1 && !HasProcessedPredefines)
      HasProcessedPredefines = true;

    return;
  } else
    return;

  // Show the header if we are (a) past the predefines, or (b) showing all
  // headers and in the predefines at a depth past the initial file and command
  // line buffers.
  bool ShowHeader = (HasProcessedPredefines ||
                     (ShowAllHeaders && CurrentIncludeDepth > 2));

  // Dump the header include information we are past the predefines buffer or
  // are showing all headers.
  if (ShowHeader && Reason == PPCallbacks::EnterFile) {
    // Write to a temporary string to avoid unnecessary flushing on errs().
    SmallString<512> Filename(UserLoc.getFilename());
    if (!MSStyle)
      Lexer::Stringify(Filename);

    SmallString<256> Msg;
    if (MSStyle)
      Msg += "Note: including file:";

    if (ShowDepth) {
      // The main source file is at depth 1, so skip one dot.
      for (unsigned i = 1; i != CurrentIncludeDepth; ++i)
        Msg += MSStyle ? ' ' : '.';

      if (!MSStyle)
        Msg += ' ';
    }
    Msg += Filename;
    Msg += '\n';

    OutputFile->write(Msg.data(), Msg.size());
    OutputFile->flush();
  }
}

static void getFileAndLine(CodeGenFunction &CGF, SourceLocation Loc,
                           llvm::SmallVectorImpl<llvm::Value*> *Out) {
  PresumedLoc PLoc = CGF.CGM.getContext().getSourceManager().getPresumedLoc(Loc);
  llvm::Constant *File =
    CGF.CGM.GetAddrOfConstantCString(PLoc.isValid()? PLoc.getFilename() : "(unknown)");
  Out->push_back(CGF.Builder.CreateConstInBoundsGEP2_32(File, 0, 0));
  Out->push_back(llvm::ConstantInt::get(CGF.IntTy, PLoc.isValid()? PLoc.getLine() : 0));
}

void TextDiagnostic::emitIncludeLocation(SourceLocation Loc,
                                         PresumedLoc PLoc) {
  if (DiagOpts.ShowLocation)
    OS << "In file included from " << PLoc.getFilename() << ':'
       << PLoc.getLine() << ":\n";
  else
    OS << "In included file:\n"; 
}

void TextDiagnostic::emitImportLocation(FullSourceLoc Loc, PresumedLoc PLoc,
                                        StringRef ModuleName) {
  if (DiagOpts->ShowLocation && PLoc.isValid())
    OS << "In module '" << ModuleName << "' imported from "
       << PLoc.getFilename() << ':' << PLoc.getLine() << ":\n";
  else
    OS << "In module '" << ModuleName << "':\n";
}