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";
}
});
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";
}
});
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";
}
});