C++ PathDiagnostic::getLocation方法代码示例

static json::Object createResult(const PathDiagnostic &Diag, json::Array &Files,
                                 const StringMap<unsigned> &RuleMapping) {
  const PathPieces &Path = Diag.path.flatten(false);
  const SourceManager &SMgr = Path.front()->getLocation().getManager();

  auto Iter = RuleMapping.find(Diag.getCheckName());
  assert(Iter != RuleMapping.end() && "Rule ID is not in the array index map?");

  return json::Object{
      {"message", createMessage(Diag.getVerboseDescription())},
      {"codeFlows", json::Array{createCodeFlow(Path, Files)}},
      {"locations",
       json::Array{createLocation(createPhysicalLocation(
           Diag.getLocation().asRange(),
           *Diag.getLocation().asLocation().getFileEntry(), SMgr, Files))}},
      {"ruleIndex", Iter->getValue()},
      {"ruleId", Diag.getCheckName()}};
}

static bool compare(const PathDiagnostic &X, const PathDiagnostic &Y) {
  FullSourceLoc XL = X.getLocation().asLocation();
  FullSourceLoc YL = Y.getLocation().asLocation();
  if (XL != YL)
    return compareCrossTUSourceLocs(XL, YL);
  if (X.getBugType() != Y.getBugType())
    return X.getBugType() < Y.getBugType();
  if (X.getCategory() != Y.getCategory())
    return X.getCategory() < Y.getCategory();
  if (X.getVerboseDescription() != Y.getVerboseDescription())
    return X.getVerboseDescription() < Y.getVerboseDescription();
  if (X.getShortDescription() != Y.getShortDescription())
    return X.getShortDescription() < Y.getShortDescription();
  if (X.getDeclWithIssue() != Y.getDeclWithIssue()) {
    const Decl *XD = X.getDeclWithIssue();
    if (!XD)
      return true;
    const Decl *YD = Y.getDeclWithIssue();
    if (!YD)
      return false;
    SourceLocation XDL = XD->getLocation();
    SourceLocation YDL = YD->getLocation();
    if (XDL != YDL) {
      const SourceManager &SM = XL.getManager();
      return compareCrossTUSourceLocs(FullSourceLoc(XDL, SM),
                                      FullSourceLoc(YDL, SM));
    }
  }
  PathDiagnostic::meta_iterator XI = X.meta_begin(), XE = X.meta_end();
  PathDiagnostic::meta_iterator YI = Y.meta_begin(), YE = Y.meta_end();
  if (XE - XI != YE - YI)
    return (XE - XI) < (YE - YI);
  for ( ; XI != XE ; ++XI, ++YI) {
    if (*XI != *YI)
      return (*XI) < (*YI);
  }
  Optional<bool> b = comparePath(X.path, Y.path);
  assert(b.hasValue());
  return b.getValue();
}

void HTMLDiagnostics::ReportDiag(const PathDiagnostic& D,
                                 FilesMade *filesMade) {

  // Create the HTML directory if it is missing.
  if (!createdDir) {
    createdDir = true;
    if (std::error_code ec = llvm::sys::fs::create_directories(Directory)) {
      llvm::errs() << "warning: could not create directory '"
                   << Directory << "': " << ec.message() << '\n';

      noDir = true;

      return;
    }
  }

  if (noDir)
    return;

  // First flatten out the entire path to make it easier to use.
  PathPieces path = D.path.flatten(/*ShouldFlattenMacros=*/false);

  // The path as already been prechecked that all parts of the path are
  // from the same file and that it is non-empty.
  const SourceManager &SMgr = path.front()->getLocation().getManager();
  assert(!path.empty());
  FileID FID =
    path.front()->getLocation().asLocation().getExpansionLoc().getFileID();
  assert(FID.isValid());

  // Create a new rewriter to generate HTML.
  Rewriter R(const_cast<SourceManager&>(SMgr), PP.getLangOpts());

  // Get the function/method name
  SmallString<128> declName("unknown");
  int offsetDecl = 0;
  if (const Decl *DeclWithIssue = D.getDeclWithIssue()) {
      if (const NamedDecl *ND = dyn_cast<NamedDecl>(DeclWithIssue)) {
          declName = ND->getDeclName().getAsString();
      }

      if (const Stmt *Body = DeclWithIssue->getBody()) {
          // Retrieve the relative position of the declaration which will be used
          // for the file name
          FullSourceLoc L(
              SMgr.getExpansionLoc(path.back()->getLocation().asLocation()),
              SMgr);
          FullSourceLoc FunL(SMgr.getExpansionLoc(Body->getLocStart()), SMgr);
          offsetDecl = L.getExpansionLineNumber() - FunL.getExpansionLineNumber();
      }
  }

  // Process the path.
  // Maintain the counts of extra note pieces separately.
  unsigned TotalPieces = path.size();
  unsigned TotalNotePieces =
      std::count_if(path.begin(), path.end(),
                    [](const std::shared_ptr<PathDiagnosticPiece> &p) {
                      return isa<PathDiagnosticNotePiece>(*p);
                    });

  unsigned TotalRegularPieces = TotalPieces - TotalNotePieces;
  unsigned NumRegularPieces = TotalRegularPieces;
  unsigned NumNotePieces = TotalNotePieces;

  for (auto I = path.rbegin(), E = path.rend(); I != E; ++I) {
    if (isa<PathDiagnosticNotePiece>(I->get())) {
      // This adds diagnostic bubbles, but not navigation.
      // Navigation through note pieces would be added later,
      // as a separate pass through the piece list.
      HandlePiece(R, FID, **I, NumNotePieces, TotalNotePieces);
      --NumNotePieces;
    } else {
      HandlePiece(R, FID, **I, NumRegularPieces, TotalRegularPieces);
      --NumRegularPieces;
    }
  }

  // Add line numbers, header, footer, etc.

  // unsigned FID = R.getSourceMgr().getMainFileID();
  html::EscapeText(R, FID);
  html::AddLineNumbers(R, FID);

  // If we have a preprocessor, relex the file and syntax highlight.
  // We might not have a preprocessor if we come from a deserialized AST file,
  // for example.

  html::SyntaxHighlight(R, FID, PP);
  html::HighlightMacros(R, FID, PP);

  // Get the full directory name of the analyzed file.

  const FileEntry* Entry = SMgr.getFileEntryForID(FID);

  // This is a cludge; basically we want to append either the full
  // working directory if we have no directory information.  This is
  // a work in progress.

  llvm::SmallString<0> DirName;
//.........这里部分代码省略.........