コード例 #1
0
BreakableBlockComment::BreakableBlockComment(
    const FormatStyle &Style, const FormatToken &Token, unsigned StartColumn,
    unsigned OriginalStartColumn, bool FirstInLine, bool InPPDirective,
    encoding::Encoding Encoding)
    : BreakableToken(Token, InPPDirective, Encoding) {
  StringRef TokenText(Token.TokenText);
  assert(TokenText.startswith("/*") && TokenText.endswith("*/"));
  TokenText.substr(2, TokenText.size() - 4).split(Lines, "\n");

  int IndentDelta = StartColumn - OriginalStartColumn;
  bool NeedsStar = true;
  LeadingWhitespace.resize(Lines.size());
  StartOfLineColumn.resize(Lines.size());
  if (Lines.size() == 1 && !FirstInLine) {
    // Comments for which FirstInLine is false can start on arbitrary column,
    // and available horizontal space can be too small to align consecutive
    // lines with the first one.
    // FIXME: We could, probably, align them to current indentation level, but
    // now we just wrap them without stars.
    NeedsStar = false;
  }
  StartOfLineColumn[0] = StartColumn + 2;
  for (size_t i = 1; i < Lines.size(); ++i) {
    adjustWhitespace(Style, i, IndentDelta);
    if (Lines[i].empty())
      // If the last line is empty, the closing "*/" will have a star.
      NeedsStar = NeedsStar && i + 1 == Lines.size();
    else
      NeedsStar = NeedsStar && Lines[i][0] == '*';
  }
  Decoration = NeedsStar ? "* " : "";
  IndentAtLineBreak = StartOfLineColumn[0] + 1;
  for (size_t i = 1; i < Lines.size(); ++i) {
    if (Lines[i].empty()) {
      if (!NeedsStar && i + 1 != Lines.size())
        // For all but the last line (which always ends in */), set the
        // start column to 0 if they're empty, so we do not insert
        // trailing whitespace anywhere.
        StartOfLineColumn[i] = 0;
      continue;
    }
    if (NeedsStar) {
      // The first line already excludes the star.
      // For all other lines, adjust the line to exclude the star and
      // (optionally) the first whitespace.
      int Offset = Lines[i].startswith("* ") ? 2 : 1;
      StartOfLineColumn[i] += Offset;
      Lines[i] = Lines[i].substr(Offset);
      LeadingWhitespace[i] += Offset;
    }
    IndentAtLineBreak = std::min<int>(IndentAtLineBreak, StartOfLineColumn[i]);
  }
  IndentAtLineBreak = std::max<unsigned>(IndentAtLineBreak, Decoration.size());
  DEBUG({
    for (size_t i = 0; i < Lines.size(); ++i) {
      llvm::dbgs() << i << " |" << Lines[i] << "| " << LeadingWhitespace[i]
                   << "\n";
    }
  });
コード例 #2
0
ファイル: BreakableToken.cpp プロジェクト: d0k/clang
BreakableBlockComment::BreakableBlockComment(
    const FormatToken &Token, unsigned IndentLevel, unsigned StartColumn,
    unsigned OriginalStartColumn, bool FirstInLine, bool InPPDirective,
    encoding::Encoding Encoding, const FormatStyle &Style)
    : BreakableToken(Token, IndentLevel, InPPDirective, Encoding, Style) {
  StringRef TokenText(Token.TokenText);
  assert(TokenText.startswith("/*") && TokenText.endswith("*/"));
  TokenText.substr(2, TokenText.size() - 4).split(Lines, "\n");

  int IndentDelta = StartColumn - OriginalStartColumn;
  WrappedLines.resize(Lines.size());
  LeadingWhitespace.resize(Lines.size());
  StartOfLineColumn.resize(Lines.size());
  StartOfLineColumn[0] = StartColumn + 2;
  for (size_t i = 1; i < Lines.size(); ++i)
    adjustWhitespace(i, IndentDelta);

  Decoration = "* ";
  if (Lines.size() == 1 && !FirstInLine) {
    // Comments for which FirstInLine is false can start on arbitrary column,
    // and available horizontal space can be too small to align consecutive
    // lines with the first one.
    // FIXME: We could, probably, align them to current indentation level, but
    // now we just wrap them without stars.
    Decoration = "";
  }
  for (size_t i = 1, e = Lines.size(); i < e && !Decoration.empty(); ++i) {
    // If the last line is empty, the closing "*/" will have a star.
    if (i + 1 == e && Lines[i].empty())
      break;
    if (!Lines[i].empty() && i + 1 != e && Decoration.startswith(Lines[i]))
      continue;
    while (!Lines[i].startswith(Decoration))
      Decoration = Decoration.substr(0, Decoration.size() - 1);
  }

  LastLineNeedsDecoration = true;
  IndentAtLineBreak = StartOfLineColumn[0] + 1;
  for (size_t i = 1; i < Lines.size(); ++i) {
    if (Lines[i].empty()) {
      if (i + 1 == Lines.size()) {
        // Empty last line means that we already have a star as a part of the
        // trailing */. We also need to preserve whitespace, so that */ is
        // correctly indented.
        LastLineNeedsDecoration = false;
      } else if (Decoration.empty()) {
        // For all other lines, set the start column to 0 if they're empty, so
        // we do not insert trailing whitespace anywhere.
        StartOfLineColumn[i] = 0;
      }
      continue;
    }

    // The first line already excludes the star.
    // For all other lines, adjust the line to exclude the star and
    // (optionally) the first whitespace.
    unsigned DecorationSize =
        Decoration.startswith(Lines[i]) ? Lines[i].size() : Decoration.size();
    StartOfLineColumn[i] += DecorationSize;
    Lines[i] = Lines[i].substr(DecorationSize);
    LeadingWhitespace[i] += DecorationSize;
    if (!Decoration.startswith(Lines[i]))
      IndentAtLineBreak =
          std::min<int>(IndentAtLineBreak, std::max(0, StartOfLineColumn[i]));
  }
  IndentAtLineBreak = std::max<unsigned>(IndentAtLineBreak, Decoration.size());
  DEBUG({
    llvm::dbgs() << "IndentAtLineBreak " << IndentAtLineBreak << "\n";
    for (size_t i = 0; i < Lines.size(); ++i) {
      llvm::dbgs() << i << " |" << Lines[i] << "| " << LeadingWhitespace[i]
                   << "\n";
    }
  });
コード例 #3
0
ファイル: BreakableToken.cpp プロジェクト: typegrind/clang
BreakableBlockComment::BreakableBlockComment(
    const FormatToken &Token, unsigned StartColumn,
    unsigned OriginalStartColumn, bool FirstInLine, bool InPPDirective,
    encoding::Encoding Encoding, const FormatStyle &Style)
    : BreakableComment(Token, StartColumn, InPPDirective, Encoding, Style) {
  assert(Tok.is(TT_BlockComment) &&
         "block comment section must start with a block comment");

  StringRef TokenText(Tok.TokenText);
  assert(TokenText.startswith("/*") && TokenText.endswith("*/"));
  TokenText.substr(2, TokenText.size() - 4).split(Lines, "\n");

  int IndentDelta = StartColumn - OriginalStartColumn;
  Content.resize(Lines.size());
  Content[0] = Lines[0];
  ContentColumn.resize(Lines.size());
  // Account for the initial '/*'.
  ContentColumn[0] = StartColumn + 2;
  Tokens.resize(Lines.size());
  for (size_t i = 1; i < Lines.size(); ++i)
    adjustWhitespace(i, IndentDelta);

  // Align decorations with the column of the star on the first line,
  // that is one column after the start "/*".
  DecorationColumn = StartColumn + 1;

  // Account for comment decoration patterns like this:
  //
  // /*
  // ** blah blah blah
  // */
  if (Lines.size() >= 2 && Content[1].startswith("**") &&
      static_cast<unsigned>(ContentColumn[1]) == StartColumn) {
    DecorationColumn = StartColumn;
  }

  Decoration = "* ";
  if (Lines.size() == 1 && !FirstInLine) {
    // Comments for which FirstInLine is false can start on arbitrary column,
    // and available horizontal space can be too small to align consecutive
    // lines with the first one.
    // FIXME: We could, probably, align them to current indentation level, but
    // now we just wrap them without stars.
    Decoration = "";
  }
  for (size_t i = 1, e = Lines.size(); i < e && !Decoration.empty(); ++i) {
    // If the last line is empty, the closing "*/" will have a star.
    if (i + 1 == e && Content[i].empty())
      break;
    if (!Content[i].empty() && i + 1 != e &&
        Decoration.startswith(Content[i]))
      continue;
    while (!Content[i].startswith(Decoration))
      Decoration = Decoration.substr(0, Decoration.size() - 1);
  }

  LastLineNeedsDecoration = true;
  IndentAtLineBreak = ContentColumn[0] + 1;
  for (size_t i = 1, e = Lines.size(); i < e; ++i) {
    if (Content[i].empty()) {
      if (i + 1 == e) {
        // Empty last line means that we already have a star as a part of the
        // trailing */. We also need to preserve whitespace, so that */ is
        // correctly indented.
        LastLineNeedsDecoration = false;
        // Align the star in the last '*/' with the stars on the previous lines.
        if (e >= 2 && !Decoration.empty()) {
          ContentColumn[i] = DecorationColumn;
        }
      } else if (Decoration.empty()) {
        // For all other lines, set the start column to 0 if they're empty, so
        // we do not insert trailing whitespace anywhere.
        ContentColumn[i] = 0;
      }
      continue;
    }

    // The first line already excludes the star.
    // The last line excludes the star if LastLineNeedsDecoration is false.
    // For all other lines, adjust the line to exclude the star and
    // (optionally) the first whitespace.
    unsigned DecorationSize = Decoration.startswith(Content[i])
                                  ? Content[i].size()
                                  : Decoration.size();
    if (DecorationSize) {
      ContentColumn[i] = DecorationColumn + DecorationSize;
    }
    Content[i] = Content[i].substr(DecorationSize);
    if (!Decoration.startswith(Content[i]))
      IndentAtLineBreak =
          std::min<int>(IndentAtLineBreak, std::max(0, ContentColumn[i]));
  }
  IndentAtLineBreak =
      std::max<unsigned>(IndentAtLineBreak, Decoration.size());

  DEBUG({
    llvm::dbgs() << "IndentAtLineBreak " << IndentAtLineBreak << "\n";
    for (size_t i = 0; i < Lines.size(); ++i) {
      llvm::dbgs() << i << " |" << Content[i] << "| "
                   << "CC=" << ContentColumn[i] << "| "
                   << "IN=" << (Content[i].data() - Lines[i].data()) << "\n";
    }
  });