void ASTExporter::dumpSourceLocation()

in facebook-clang-plugins/libtooling/ASTExporter.h [555:594]

• 32 lines of code
• 5 McCabe index (conditional complexity)

void ASTExporter<ATDWriter>::dumpSourceLocation(SourceLocation Loc) {
  const SourceManager &SM = Context.getSourceManager();
  SourceLocation ExpLoc =
      Options.useMacroExpansionLocation ? SM.getExpansionLoc(Loc) : Loc;
  SourceLocation SpellingLoc = SM.getSpellingLoc(ExpLoc);

  // 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()) {
    ObjectScope Scope(OF, 0);
    return;
  }

  if (strcmp(PLoc.getFilename(), LastLocFilename) != 0) {
    ObjectScope Scope(OF, 3);
    OF.emitTag("file");
    // Normalizing filenames matters because the current directory may change
    // during the compilation of large projects.
    OF.emitString(Options.normalizeSourcePath(PLoc.getFilename()));
    OF.emitTag("line");
    OF.emitInteger(PLoc.getLine());
    OF.emitTag("column");
    OF.emitInteger(PLoc.getColumn());
  } else if (PLoc.getLine() != LastLocLine) {
    ObjectScope Scope(OF, 2);
    OF.emitTag("line");
    OF.emitInteger(PLoc.getLine());
    OF.emitTag("column");
    OF.emitInteger(PLoc.getColumn());
  } else {
    ObjectScope Scope(OF, 1);
    OF.emitTag("column");
    OF.emitInteger(PLoc.getColumn());
  }
  LastLocFilename = PLoc.getFilename();
  LastLocLine = PLoc.getLine();
  // TODO: lastLocColumn
}