void TextDiagnostic::emitParseableFixits(ArrayRef<FixItHint> Hints,
const SourceManager &SM) {
if (!DiagOpts->ShowParseableFixits)
return;
// We follow FixItRewriter's example in not (yet) handling
// fix-its in macros.
for (ArrayRef<FixItHint>::iterator I = Hints.begin(), E = Hints.end();
I != E; ++I) {
if (I->RemoveRange.isInvalid() ||
I->RemoveRange.getBegin().isMacroID() ||
I->RemoveRange.getEnd().isMacroID())
return;
}
for (ArrayRef<FixItHint>::iterator I = Hints.begin(), E = Hints.end();
I != E; ++I) {
SourceLocation BLoc = I->RemoveRange.getBegin();
SourceLocation ELoc = I->RemoveRange.getEnd();
std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(BLoc);
std::pair<FileID, unsigned> EInfo = SM.getDecomposedLoc(ELoc);
// Adjust for token ranges.
if (I->RemoveRange.isTokenRange())
EInfo.second += Lexer::MeasureTokenLength(ELoc, SM, LangOpts);
// We specifically do not do word-wrapping or tab-expansion here,
// because this is supposed to be easy to parse.
PresumedLoc PLoc = SM.getPresumedLoc(BLoc);
if (PLoc.isInvalid())
break;
OS << "fix-it:\"";
OS.write_escaped(PLoc.getFilename());
OS << "\":{" << SM.getLineNumber(BInfo.first, BInfo.second)
<< ':' << SM.getColumnNumber(BInfo.first, BInfo.second)
<< '-' << SM.getLineNumber(EInfo.first, EInfo.second)
<< ':' << SM.getColumnNumber(EInfo.first, EInfo.second)
<< "}:\"";
OS.write_escaped(I->CodeToInsert);
OS << "\"\n";
}
}
static std::string buildFixItInsertionLine(unsigned LineNo,
const SourceColumnMap &map,
ArrayRef<FixItHint> Hints,
const SourceManager &SM,
const DiagnosticOptions *DiagOpts) {
std::string FixItInsertionLine;
if (Hints.empty() || !DiagOpts->ShowFixits)
return FixItInsertionLine;
unsigned PrevHintEndCol = 0;
for (ArrayRef<FixItHint>::iterator I = Hints.begin(), E = Hints.end();
I != E; ++I) {
if (!I->CodeToInsert.empty()) {
// We have an insertion hint. Determine whether the inserted
// code contains no newlines and is on the same line as the caret.
std::pair<FileID, unsigned> HintLocInfo
= SM.getDecomposedExpansionLoc(I->RemoveRange.getBegin());
if (LineNo == SM.getLineNumber(HintLocInfo.first, HintLocInfo.second) &&
StringRef(I->CodeToInsert).find_first_of("\n\r") == StringRef::npos) {
// Insert the new code into the line just below the code
// that the user wrote.
// Note: When modifying this function, be very careful about what is a
// "column" (printed width, platform-dependent) and what is a
// "byte offset" (SourceManager "column").
unsigned HintByteOffset
= SM.getColumnNumber(HintLocInfo.first, HintLocInfo.second) - 1;
// The hint must start inside the source or right at the end
assert(HintByteOffset < static_cast<unsigned>(map.bytes())+1);
unsigned HintCol = map.byteToContainingColumn(HintByteOffset);
// If we inserted a long previous hint, push this one forwards, and add
// an extra space to show that this is not part of the previous
// completion. This is sort of the best we can do when two hints appear
// to overlap.
//
// Note that if this hint is located immediately after the previous
// hint, no space will be added, since the location is more important.
if (HintCol < PrevHintEndCol)
HintCol = PrevHintEndCol + 1;
// FIXME: This function handles multibyte characters in the source, but
// not in the fixits. This assertion is intended to catch unintended
// use of multibyte characters in fixits. If we decide to do this, we'll
// have to track separate byte widths for the source and fixit lines.
assert((size_t)llvm::sys::locale::columnWidth(I->CodeToInsert) ==
I->CodeToInsert.size());
// This relies on one byte per column in our fixit hints.
// This should NOT use HintByteOffset, because the source might have
// Unicode characters in earlier columns.
unsigned LastColumnModified = HintCol + I->CodeToInsert.size();
if (LastColumnModified > FixItInsertionLine.size())
FixItInsertionLine.resize(LastColumnModified, ' ');
std::copy(I->CodeToInsert.begin(), I->CodeToInsert.end(),
FixItInsertionLine.begin() + HintCol);
PrevHintEndCol = LastColumnModified;
} else {
FixItInsertionLine.clear();
break;
}
}
}
expandTabs(FixItInsertionLine, DiagOpts->TabStop);
return FixItInsertionLine;
}
/// \brief Print out the file/line/column information and include trace.
///
/// This method handlen the emission of the diagnostic location information.
/// This includes extracting as much location information as is present for
/// the diagnostic and printing it, as well as any include stack or source
/// ranges necessary.
void TextDiagnostic::emitDiagnosticLoc(SourceLocation Loc, PresumedLoc PLoc,
DiagnosticsEngine::Level Level,
ArrayRef<CharSourceRange> Ranges,
const SourceManager &SM) {
if (PLoc.isInvalid()) {
// At least print the file name if available:
FileID FID = SM.getFileID(Loc);
if (!FID.isInvalid()) {
const FileEntry* FE = SM.getFileEntryForID(FID);
if (FE && FE->getName()) {
OS << FE->getName();
if (FE->getDevice() == 0 && FE->getInode() == 0
&& FE->getFileMode() == 0) {
// in PCH is a guess, but a good one:
OS << " (in PCH)";
}
OS << ": ";
}
}
return;
}
unsigned LineNo = PLoc.getLine();
if (!DiagOpts->ShowLocation)
return;
if (DiagOpts->ShowColors)
OS.changeColor(savedColor, true);
OS << PLoc.getFilename();
switch (DiagOpts->getFormat()) {
case DiagnosticOptions::LFort: OS << ':' << LineNo; break;
case DiagnosticOptions::Msvc: OS << '(' << LineNo; break;
case DiagnosticOptions::Vi: OS << " +" << LineNo; break;
}
if (DiagOpts->ShowColumn)
// Compute the column number.
if (unsigned ColNo = PLoc.getColumn()) {
if (DiagOpts->getFormat() == DiagnosticOptions::Msvc) {
OS << ',';
ColNo--;
} else
OS << ':';
OS << ColNo;
}
switch (DiagOpts->getFormat()) {
case DiagnosticOptions::LFort:
case DiagnosticOptions::Vi: OS << ':'; break;
case DiagnosticOptions::Msvc: OS << ") : "; break;
}
if (DiagOpts->ShowSourceRanges && !Ranges.empty()) {
FileID CaretFileID =
SM.getFileID(SM.getExpansionLoc(Loc));
bool PrintedRange = false;
for (ArrayRef<CharSourceRange>::const_iterator RI = Ranges.begin(),
RE = Ranges.end();
RI != RE; ++RI) {
// Ignore invalid ranges.
if (!RI->isValid()) continue;
SourceLocation B = SM.getExpansionLoc(RI->getBegin());
SourceLocation E = SM.getExpansionLoc(RI->getEnd());
// If the End location and the start location are the same and are a
// macro location, then the range was something that came from a
// macro expansion or _Pragma. If this is an object-like macro, the
// best we can do is to highlight the range. If this is a
// function-like macro, we'd also like to highlight the arguments.
if (B == E && RI->getEnd().isMacroID())
E = SM.getExpansionRange(RI->getEnd()).second;
std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(B);
std::pair<FileID, unsigned> EInfo = SM.getDecomposedLoc(E);
// If the start or end of the range is in another file, just discard
// it.
if (BInfo.first != CaretFileID || EInfo.first != CaretFileID)
continue;
// Add in the length of the token, so that we cover multi-char
// tokens.
unsigned TokSize = 0;
if (RI->isTokenRange())
TokSize = Lexer::MeasureTokenLength(E, SM, LangOpts);
OS << '{' << SM.getLineNumber(BInfo.first, BInfo.second) << ':'
<< SM.getColumnNumber(BInfo.first, BInfo.second) << '-'
<< SM.getLineNumber(EInfo.first, EInfo.second) << ':'
<< (SM.getColumnNumber(EInfo.first, EInfo.second)+TokSize)
<< '}';
PrintedRange = true;
}
if (PrintedRange)
OS << ':';
}
OS << ' ';
}
/// \brief Emit a code snippet and caret line.
///
/// This routine emits a single line's code snippet and caret line..
///
/// \param Loc The location for the caret.
/// \param Ranges The underlined ranges for this code snippet.
/// \param Hints The FixIt hints active for this diagnostic.
void TextDiagnostic::emitSnippetAndCaret(
SourceLocation Loc, DiagnosticsEngine::Level Level,
SmallVectorImpl<CharSourceRange>& Ranges,
ArrayRef<FixItHint> Hints,
const SourceManager &SM) {
assert(!Loc.isInvalid() && "must have a valid source location here");
assert(Loc.isFileID() && "must have a file location here");
// If caret diagnostics are enabled and we have location, we want to
// emit the caret. However, we only do this if the location moved
// from the last diagnostic, if the last diagnostic was a note that
// was part of a different warning or error diagnostic, or if the
// diagnostic has ranges. We don't want to emit the same caret
// multiple times if one loc has multiple diagnostics.
if (!DiagOpts->ShowCarets)
return;
if (Loc == LastLoc && Ranges.empty() && Hints.empty() &&
(LastLevel != DiagnosticsEngine::Note || Level == LastLevel))
return;
// Decompose the location into a FID/Offset pair.
std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
FileID FID = LocInfo.first;
unsigned FileOffset = LocInfo.second;
// Get information about the buffer it points into.
bool Invalid = false;
const char *BufStart = SM.getBufferData(FID, &Invalid).data();
if (Invalid)
return;
unsigned LineNo = SM.getLineNumber(FID, FileOffset);
unsigned ColNo = SM.getColumnNumber(FID, FileOffset);
// Rewind from the current position to the start of the line.
const char *TokPtr = BufStart+FileOffset;
const char *LineStart = TokPtr-ColNo+1; // Column # is 1-based.
// Compute the line end. Scan forward from the error position to the end of
// the line.
const char *LineEnd = TokPtr;
while (*LineEnd != '\n' && *LineEnd != '\r' && *LineEnd != '\0')
++LineEnd;
// Copy the line of code into an std::string for ease of manipulation.
std::string SourceLine(LineStart, LineEnd);
// Create a line for the caret that is filled with spaces that is the same
// length as the line of source code.
std::string CaretLine(LineEnd-LineStart, ' ');
const SourceColumnMap sourceColMap(SourceLine, DiagOpts->TabStop);
// Highlight all of the characters covered by Ranges with ~ characters.
for (SmallVectorImpl<CharSourceRange>::iterator I = Ranges.begin(),
E = Ranges.end();
I != E; ++I)
highlightRange(*I, LineNo, FID, sourceColMap, CaretLine, SM, LangOpts);
// Next, insert the caret itself.
ColNo = sourceColMap.byteToContainingColumn(ColNo-1);
if (CaretLine.size()<ColNo+1)
CaretLine.resize(ColNo+1, ' ');
CaretLine[ColNo] = '^';
std::string FixItInsertionLine = buildFixItInsertionLine(LineNo,
sourceColMap,
Hints, SM,
DiagOpts.getPtr());
// If the source line is too long for our terminal, select only the
// "interesting" source region within that line.
unsigned Columns = DiagOpts->MessageLength;
if (Columns)
selectInterestingSourceRegion(SourceLine, CaretLine, FixItInsertionLine,
Columns, sourceColMap);
// If we are in -fdiagnostics-print-source-range-info mode, we are trying
// to produce easily machine parsable output. Add a space before the
// source line and the caret to make it trivial to tell the main diagnostic
// line from what the user is intended to see.
if (DiagOpts->ShowSourceRanges) {
SourceLine = ' ' + SourceLine;
CaretLine = ' ' + CaretLine;
}
// Finally, remove any blank spaces from the end of CaretLine.
while (CaretLine[CaretLine.size()-1] == ' ')
CaretLine.erase(CaretLine.end()-1);
// Emit what we have computed.
emitSnippet(SourceLine);
if (DiagOpts->ShowColors)
OS.changeColor(caretColor, true);
OS << CaretLine << '\n';
if (DiagOpts->ShowColors)
OS.resetColor();
if (!FixItInsertionLine.empty()) {
if (DiagOpts->ShowColors)
// Print fixit line in color
OS.changeColor(fixitColor, false);
if (DiagOpts->ShowSourceRanges)
OS << ' ';
OS << FixItInsertionLine << '\n';
if (DiagOpts->ShowColors)
OS.resetColor();
}
// Print out any parseable fixit information requested by the options.
emitParseableFixits(Hints, SM);
}
void TextDiagnosticPrinter::EmitCaretDiagnostic(SourceLocation Loc,
SourceRange *Ranges,
unsigned NumRanges,
SourceManager &SM,
const CodeModificationHint *Hints,
unsigned NumHints,
unsigned Columns) {
assert(LangOpts && "Unexpected diagnostic outside source file processing");
assert(!Loc.isInvalid() && "must have a valid source location here");
// If this is a macro ID, first emit information about where this was
// instantiated (recursively) then emit information about where the token was
// spelled from.
if (!Loc.isFileID()) {
SourceLocation OneLevelUp = SM.getImmediateInstantiationRange(Loc).first;
// FIXME: Map ranges?
EmitCaretDiagnostic(OneLevelUp, Ranges, NumRanges, SM, 0, 0, Columns);
// Map the location.
Loc = SM.getImmediateSpellingLoc(Loc);
// Map the ranges.
for (unsigned i = 0; i != NumRanges; ++i) {
SourceLocation S = Ranges[i].getBegin(), E = Ranges[i].getEnd();
if (S.isMacroID()) S = SM.getImmediateSpellingLoc(S);
if (E.isMacroID()) E = SM.getImmediateSpellingLoc(E);
Ranges[i] = SourceRange(S, E);
}
// Get the pretty name, according to #line directives etc.
PresumedLoc PLoc = SM.getPresumedLoc(Loc);
// If this diagnostic is not in the main file, print out the "included from"
// lines.
if (LastWarningLoc != PLoc.getIncludeLoc()) {
LastWarningLoc = PLoc.getIncludeLoc();
PrintIncludeStack(LastWarningLoc, SM);
}
if (DiagOpts->ShowLocation) {
// Emit the file/line/column that this expansion came from.
OS << PLoc.getFilename() << ':' << PLoc.getLine() << ':';
if (DiagOpts->ShowColumn)
OS << PLoc.getColumn() << ':';
OS << ' ';
}
OS << "note: instantiated from:\n";
EmitCaretDiagnostic(Loc, Ranges, NumRanges, SM, Hints, NumHints, Columns);
return;
}
// Decompose the location into a FID/Offset pair.
std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
FileID FID = LocInfo.first;
unsigned FileOffset = LocInfo.second;
// Get information about the buffer it points into.
std::pair<const char*, const char*> BufferInfo = SM.getBufferData(FID);
const char *BufStart = BufferInfo.first;
unsigned ColNo = SM.getColumnNumber(FID, FileOffset);
unsigned CaretEndColNo
= ColNo + Lexer::MeasureTokenLength(Loc, SM, *LangOpts);
// Rewind from the current position to the start of the line.
const char *TokPtr = BufStart+FileOffset;
const char *LineStart = TokPtr-ColNo+1; // Column # is 1-based.
// Compute the line end. Scan forward from the error position to the end of
// the line.
const char *LineEnd = TokPtr;
while (*LineEnd != '\n' && *LineEnd != '\r' && *LineEnd != '\0')
++LineEnd;
// FIXME: This shouldn't be necessary, but the CaretEndColNo can extend past
// the source line length as currently being computed. See
// test/Misc/message-length.c.
CaretEndColNo = std::min(CaretEndColNo, unsigned(LineEnd - LineStart));
// Copy the line of code into an std::string for ease of manipulation.
std::string SourceLine(LineStart, LineEnd);
// Create a line for the caret that is filled with spaces that is the same
// length as the line of source code.
std::string CaretLine(LineEnd-LineStart, ' ');
// Highlight all of the characters covered by Ranges with ~ characters.
if (NumRanges) {
unsigned LineNo = SM.getLineNumber(FID, FileOffset);
for (unsigned i = 0, e = NumRanges; i != e; ++i)
HighlightRange(Ranges[i], SM, LineNo, FID, CaretLine, SourceLine);
}
// Next, insert the caret itself.
if (ColNo-1 < CaretLine.size())
CaretLine[ColNo-1] = '^';
else
CaretLine.push_back('^');
// Scan the source line, looking for tabs. If we find any, manually expand
// them to spaces and update the CaretLine to match.
for (unsigned i = 0; i != SourceLine.size(); ++i) {
if (SourceLine[i] != '\t') continue;
// Replace this tab with at least one space.
SourceLine[i] = ' ';
// Compute the number of spaces we need to insert.
unsigned TabStop = DiagOpts->TabStop;
assert(0 < TabStop && TabStop <= DiagnosticOptions::MaxTabStop &&
"Invalid -ftabstop value");
unsigned NumSpaces = ((i+TabStop)/TabStop * TabStop) - (i+1);
assert(NumSpaces < TabStop && "Invalid computation of space amt");
// Insert spaces into the SourceLine.
SourceLine.insert(i+1, NumSpaces, ' ');
// Insert spaces or ~'s into CaretLine.
CaretLine.insert(i+1, NumSpaces, CaretLine[i] == '~' ? '~' : ' ');
}
// If we are in -fdiagnostics-print-source-range-info mode, we are trying to
// produce easily machine parsable output. Add a space before the source line
// and the caret to make it trivial to tell the main diagnostic line from what
// the user is intended to see.
if (DiagOpts->ShowSourceRanges) {
SourceLine = ' ' + SourceLine;
CaretLine = ' ' + CaretLine;
}
std::string FixItInsertionLine;
if (NumHints && DiagOpts->ShowFixits) {
for (const CodeModificationHint *Hint = Hints, *LastHint = Hints + NumHints;
Hint != LastHint; ++Hint) {
if (Hint->InsertionLoc.isValid()) {
// We have an insertion hint. Determine whether the inserted
// code is on the same line as the caret.
std::pair<FileID, unsigned> HintLocInfo
= SM.getDecomposedInstantiationLoc(Hint->InsertionLoc);
if (SM.getLineNumber(HintLocInfo.first, HintLocInfo.second) ==
SM.getLineNumber(FID, FileOffset)) {
// Insert the new code into the line just below the code
// that the user wrote.
unsigned HintColNo
= SM.getColumnNumber(HintLocInfo.first, HintLocInfo.second);
unsigned LastColumnModified
= HintColNo - 1 + Hint->CodeToInsert.size();
if (LastColumnModified > FixItInsertionLine.size())
FixItInsertionLine.resize(LastColumnModified, ' ');
std::copy(Hint->CodeToInsert.begin(), Hint->CodeToInsert.end(),
FixItInsertionLine.begin() + HintColNo - 1);
} else {
FixItInsertionLine.clear();
break;
}
}
}
// Now that we have the entire fixit line, expand the tabs in it.
// Since we don't want to insert spaces in the middle of a word,
// find each word and the column it should line up with and insert
// spaces until they match.
if (!FixItInsertionLine.empty()) {
unsigned FixItPos = 0;
unsigned LinePos = 0;
unsigned TabExpandedCol = 0;
unsigned LineLength = LineEnd - LineStart;
while (FixItPos < FixItInsertionLine.size() && LinePos < LineLength) {
// Find the next word in the FixIt line.
while (FixItPos < FixItInsertionLine.size() &&
FixItInsertionLine[FixItPos] == ' ')
++FixItPos;
unsigned CharDistance = FixItPos - TabExpandedCol;
// Walk forward in the source line, keeping track of
// the tab-expanded column.
for (unsigned I = 0; I < CharDistance; ++I, ++LinePos)
if (LinePos >= LineLength || LineStart[LinePos] != '\t')
++TabExpandedCol;
else
TabExpandedCol =
(TabExpandedCol/DiagOpts->TabStop + 1) * DiagOpts->TabStop;
// Adjust the fixit line to match this column.
FixItInsertionLine.insert(FixItPos, TabExpandedCol-FixItPos, ' ');
FixItPos = TabExpandedCol;
// Walk to the end of the word.
while (FixItPos < FixItInsertionLine.size() &&
FixItInsertionLine[FixItPos] != ' ')
++FixItPos;
}
}
}
// If the source line is too long for our terminal, select only the
// "interesting" source region within that line.
if (Columns && SourceLine.size() > Columns)
SelectInterestingSourceRegion(SourceLine, CaretLine, FixItInsertionLine,
CaretEndColNo, Columns);
// Finally, remove any blank spaces from the end of CaretLine.
while (CaretLine[CaretLine.size()-1] == ' ')
CaretLine.erase(CaretLine.end()-1);
// Emit what we have computed.
OS << SourceLine << '\n';
if (DiagOpts->ShowColors)
OS.changeColor(caretColor, true);
OS << CaretLine << '\n';
if (DiagOpts->ShowColors)
OS.resetColor();
if (!FixItInsertionLine.empty()) {
if (DiagOpts->ShowColors)
// Print fixit line in color
OS.changeColor(fixitColor, false);
if (DiagOpts->ShowSourceRanges)
OS << ' ';
OS << FixItInsertionLine << '\n';
if (DiagOpts->ShowColors)
OS.resetColor();
}
}
void TextDiagnosticPrinter::EmitCaretDiagnostic(SourceLocation Loc,
SourceRange *Ranges,
unsigned NumRanges,
SourceManager &SM,
const CodeModificationHint *Hints,
unsigned NumHints,
unsigned Columns) {
assert(!Loc.isInvalid() && "must have a valid source location here");
// If this is a macro ID, first emit information about where this was
// instantiated (recursively) then emit information about where. the token was
// spelled from.
if (!Loc.isFileID()) {
SourceLocation OneLevelUp = SM.getImmediateInstantiationRange(Loc).first;
// FIXME: Map ranges?
EmitCaretDiagnostic(OneLevelUp, Ranges, NumRanges, SM, 0, 0, Columns);
Loc = SM.getImmediateSpellingLoc(Loc);
// Map the ranges.
for (unsigned i = 0; i != NumRanges; ++i) {
SourceLocation S = Ranges[i].getBegin(), E = Ranges[i].getEnd();
if (S.isMacroID()) S = SM.getImmediateSpellingLoc(S);
if (E.isMacroID()) E = SM.getImmediateSpellingLoc(E);
Ranges[i] = SourceRange(S, E);
}
if (ShowLocation) {
std::pair<FileID, unsigned> IInfo = SM.getDecomposedInstantiationLoc(Loc);
// Emit the file/line/column that this expansion came from.
OS << SM.getBuffer(IInfo.first)->getBufferIdentifier() << ':'
<< SM.getLineNumber(IInfo.first, IInfo.second) << ':';
if (ShowColumn)
OS << SM.getColumnNumber(IInfo.first, IInfo.second) << ':';
OS << ' ';
}
OS << "note: instantiated from:\n";
EmitCaretDiagnostic(Loc, Ranges, NumRanges, SM, Hints, NumHints, Columns);
return;
}
// Decompose the location into a FID/Offset pair.
std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
FileID FID = LocInfo.first;
unsigned FileOffset = LocInfo.second;
// Get information about the buffer it points into.
std::pair<const char*, const char*> BufferInfo = SM.getBufferData(FID);
const char *BufStart = BufferInfo.first;
unsigned ColNo = SM.getColumnNumber(FID, FileOffset);
unsigned CaretEndColNo
= ColNo + Lexer::MeasureTokenLength(Loc, SM, *LangOpts);
// Rewind from the current position to the start of the line.
const char *TokPtr = BufStart+FileOffset;
const char *LineStart = TokPtr-ColNo+1; // Column # is 1-based.
// Compute the line end. Scan forward from the error position to the end of
// the line.
const char *LineEnd = TokPtr;
while (*LineEnd != '\n' && *LineEnd != '\r' && *LineEnd != '\0')
++LineEnd;
// Copy the line of code into an std::string for ease of manipulation.
std::string SourceLine(LineStart, LineEnd);
// Create a line for the caret that is filled with spaces that is the same
// length as the line of source code.
std::string CaretLine(LineEnd-LineStart, ' ');
// Highlight all of the characters covered by Ranges with ~ characters.
if (NumRanges) {
unsigned LineNo = SM.getLineNumber(FID, FileOffset);
for (unsigned i = 0, e = NumRanges; i != e; ++i)
HighlightRange(Ranges[i], SM, LineNo, FID, CaretLine, SourceLine);
}
// Next, insert the caret itself.
if (ColNo-1 < CaretLine.size())
CaretLine[ColNo-1] = '^';
else
CaretLine.push_back('^');
// Scan the source line, looking for tabs. If we find any, manually expand
// them to 8 characters and update the CaretLine to match.
for (unsigned i = 0; i != SourceLine.size(); ++i) {
if (SourceLine[i] != '\t') continue;
// Replace this tab with at least one space.
SourceLine[i] = ' ';
// Compute the number of spaces we need to insert.
unsigned NumSpaces = ((i+8)&~7) - (i+1);
assert(NumSpaces < 8 && "Invalid computation of space amt");
// Insert spaces into the SourceLine.
SourceLine.insert(i+1, NumSpaces, ' ');
// Insert spaces or ~'s into CaretLine.
CaretLine.insert(i+1, NumSpaces, CaretLine[i] == '~' ? '~' : ' ');
}
// If we are in -fdiagnostics-print-source-range-info mode, we are trying to
// produce easily machine parsable output. Add a space before the source line
// and the caret to make it trivial to tell the main diagnostic line from what
// the user is intended to see.
if (PrintRangeInfo) {
SourceLine = ' ' + SourceLine;
CaretLine = ' ' + CaretLine;
}
std::string FixItInsertionLine;
if (NumHints && PrintFixItInfo) {
for (const CodeModificationHint *Hint = Hints, *LastHint = Hints + NumHints;
Hint != LastHint; ++Hint) {
if (Hint->InsertionLoc.isValid()) {
// We have an insertion hint. Determine whether the inserted
// code is on the same line as the caret.
std::pair<FileID, unsigned> HintLocInfo
= SM.getDecomposedInstantiationLoc(Hint->InsertionLoc);
if (SM.getLineNumber(HintLocInfo.first, HintLocInfo.second) ==
SM.getLineNumber(FID, FileOffset)) {
// Insert the new code into the line just below the code
// that the user wrote.
unsigned HintColNo
= SM.getColumnNumber(HintLocInfo.first, HintLocInfo.second);
unsigned LastColumnModified
= HintColNo - 1 + Hint->CodeToInsert.size();
if (LastColumnModified > FixItInsertionLine.size())
FixItInsertionLine.resize(LastColumnModified, ' ');
std::copy(Hint->CodeToInsert.begin(), Hint->CodeToInsert.end(),
FixItInsertionLine.begin() + HintColNo - 1);
} else {
FixItInsertionLine.clear();
break;
}
}
}
}
// If the source line is too long for our terminal, select only the
// "interesting" source region within that line.
if (Columns && SourceLine.size() > Columns)
SelectInterestingSourceRegion(SourceLine, CaretLine, FixItInsertionLine,
CaretEndColNo, Columns);
// Finally, remove any blank spaces from the end of CaretLine.
while (CaretLine[CaretLine.size()-1] == ' ')
CaretLine.erase(CaretLine.end()-1);
// Emit what we have computed.
OS << SourceLine << '\n';
if (UseColors)
OS.changeColor(caretColor, true);
OS << CaretLine << '\n';
if (UseColors)
OS.resetColor();
if (!FixItInsertionLine.empty()) {
if (UseColors)
// Print fixit line in color
OS.changeColor(fixitColor, false);
if (PrintRangeInfo)
OS << ' ';
OS << FixItInsertionLine << '\n';
if (UseColors)
OS.resetColor();
}
}
