C++ (Cpp) PreprocessedContents::empty Examples

Example #1

File: pp-engine.cpp Project: krf/kdevelop

void pp::handle_include(bool skip_current_path, Stream& input, Stream& output)
{
  if (input.atEnd()) {
    createProblem(input, i18n("invalid include directive"));
    return;
  }
  QByteArray bytes = KDevelop::IndexedString::fromIndex(input.current()).byteArray();
  if (bytes.size() > 0 && (isLetter(bytes.at(0)) || bytes.at(0) == '_')) {
    pp_macro_expander expand_include(this);

    Anchor inputPosition = input.inputPosition();
    KDevelop::CursorInRevision originalInputPosition = input.originalInputPosition();
    PreprocessedContents includeString;
    {
      Stream cs(&includeString);
      expand_include(input, cs);
    }

    skip_blanks(input, devnull());
    RETURN_ON_FAIL(!includeString.isEmpty() && (includeString.first() == indexFromCharacter('<') || includeString.first() == indexFromCharacter('"')));

    // Filter out whitespaces
    PreprocessedContents filteredIncludeString;
    if(!includeString.empty() && includeString.front() == indexFromCharacter('"'))
    {
      // Don't filter if it is a string token
      filteredIncludeString = includeString;
    }
    else
    {
      // Filter out whitespaces, as the preprocessor adds them in random places to prevent implicit token merging
      foreach(uint index, includeString)
          if(index != indexFromCharacter(' '))
            filteredIncludeString.push_back(index);
    }
    
    Stream newInput(&filteredIncludeString, inputPosition);
    newInput.setOriginalInputPosition(originalInputPosition);
    handle_include(skip_current_path, newInput, output);
    return;
  }