| //===- SourceMgr.cpp - Manager for Simple Source Buffers & Diagnostics ----===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the SourceMgr class. This class is used as a simple |
| // substrate for diagnostics, #include handling, and other low level things for |
| // simple parsers. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Support/SourceMgr.h" |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/Support/ErrorOr.h" |
| #include "llvm/Support/Locale.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/SMLoc.h" |
| #include "llvm/Support/WithColor.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <algorithm> |
| #include <cassert> |
| #include <cstddef> |
| #include <limits> |
| #include <memory> |
| #include <string> |
| #include <utility> |
| |
| using namespace llvm; |
| |
| static const size_t TabStop = 8; |
| |
| unsigned SourceMgr::AddIncludeFile(const std::string &Filename, |
| SMLoc IncludeLoc, |
| std::string &IncludedFile) { |
| IncludedFile = Filename; |
| ErrorOr<std::unique_ptr<MemoryBuffer>> NewBufOrErr = |
| MemoryBuffer::getFile(IncludedFile); |
| |
| // If the file didn't exist directly, see if it's in an include path. |
| for (unsigned i = 0, e = IncludeDirectories.size(); i != e && !NewBufOrErr; |
| ++i) { |
| IncludedFile = |
| IncludeDirectories[i] + sys::path::get_separator().data() + Filename; |
| NewBufOrErr = MemoryBuffer::getFile(IncludedFile); |
| } |
| |
| if (!NewBufOrErr) |
| return 0; |
| |
| return AddNewSourceBuffer(std::move(*NewBufOrErr), IncludeLoc); |
| } |
| |
| unsigned SourceMgr::FindBufferContainingLoc(SMLoc Loc) const { |
| for (unsigned i = 0, e = Buffers.size(); i != e; ++i) |
| if (Loc.getPointer() >= Buffers[i].Buffer->getBufferStart() && |
| // Use <= here so that a pointer to the null at the end of the buffer |
| // is included as part of the buffer. |
| Loc.getPointer() <= Buffers[i].Buffer->getBufferEnd()) |
| return i + 1; |
| return 0; |
| } |
| |
| template <typename T> |
| static std::vector<T> &GetOrCreateOffsetCache(void *&OffsetCache, |
| MemoryBuffer *Buffer) { |
| if (OffsetCache) |
| return *static_cast<std::vector<T> *>(OffsetCache); |
| |
| // Lazily fill in the offset cache. |
| auto *Offsets = new std::vector<T>(); |
| size_t Sz = Buffer->getBufferSize(); |
| assert(Sz <= std::numeric_limits<T>::max()); |
| StringRef S = Buffer->getBuffer(); |
| for (size_t N = 0; N < Sz; ++N) { |
| if (S[N] == '\n') |
| Offsets->push_back(static_cast<T>(N)); |
| } |
| |
| OffsetCache = Offsets; |
| return *Offsets; |
| } |
| |
| template <typename T> |
| unsigned SourceMgr::SrcBuffer::getLineNumberSpecialized(const char *Ptr) const { |
| std::vector<T> &Offsets = |
| GetOrCreateOffsetCache<T>(OffsetCache, Buffer.get()); |
| |
| const char *BufStart = Buffer->getBufferStart(); |
| assert(Ptr >= BufStart && Ptr <= Buffer->getBufferEnd()); |
| ptrdiff_t PtrDiff = Ptr - BufStart; |
| assert(PtrDiff >= 0 && |
| static_cast<size_t>(PtrDiff) <= std::numeric_limits<T>::max()); |
| T PtrOffset = static_cast<T>(PtrDiff); |
| |
| // llvm::lower_bound gives the number of EOL before PtrOffset. Add 1 to get |
| // the line number. |
| return llvm::lower_bound(Offsets, PtrOffset) - Offsets.begin() + 1; |
| } |
| |
| /// Look up a given \p Ptr in in the buffer, determining which line it came |
| /// from. |
| unsigned SourceMgr::SrcBuffer::getLineNumber(const char *Ptr) const { |
| size_t Sz = Buffer->getBufferSize(); |
| if (Sz <= std::numeric_limits<uint8_t>::max()) |
| return getLineNumberSpecialized<uint8_t>(Ptr); |
| else if (Sz <= std::numeric_limits<uint16_t>::max()) |
| return getLineNumberSpecialized<uint16_t>(Ptr); |
| else if (Sz <= std::numeric_limits<uint32_t>::max()) |
| return getLineNumberSpecialized<uint32_t>(Ptr); |
| else |
| return getLineNumberSpecialized<uint64_t>(Ptr); |
| } |
| |
| template <typename T> |
| const char *SourceMgr::SrcBuffer::getPointerForLineNumberSpecialized( |
| unsigned LineNo) const { |
| std::vector<T> &Offsets = |
| GetOrCreateOffsetCache<T>(OffsetCache, Buffer.get()); |
| |
| // We start counting line and column numbers from 1. |
| if (LineNo != 0) |
| --LineNo; |
| |
| const char *BufStart = Buffer->getBufferStart(); |
| |
| // The offset cache contains the location of the \n for the specified line, |
| // we want the start of the line. As such, we look for the previous entry. |
| if (LineNo == 0) |
| return BufStart; |
| if (LineNo > Offsets.size()) |
| return nullptr; |
| return BufStart + Offsets[LineNo - 1] + 1; |
| } |
| |
| /// Return a pointer to the first character of the specified line number or |
| /// null if the line number is invalid. |
| const char * |
| SourceMgr::SrcBuffer::getPointerForLineNumber(unsigned LineNo) const { |
| size_t Sz = Buffer->getBufferSize(); |
| if (Sz <= std::numeric_limits<uint8_t>::max()) |
| return getPointerForLineNumberSpecialized<uint8_t>(LineNo); |
| else if (Sz <= std::numeric_limits<uint16_t>::max()) |
| return getPointerForLineNumberSpecialized<uint16_t>(LineNo); |
| else if (Sz <= std::numeric_limits<uint32_t>::max()) |
| return getPointerForLineNumberSpecialized<uint32_t>(LineNo); |
| else |
| return getPointerForLineNumberSpecialized<uint64_t>(LineNo); |
| } |
| |
| SourceMgr::SrcBuffer::SrcBuffer(SourceMgr::SrcBuffer &&Other) |
| : Buffer(std::move(Other.Buffer)), OffsetCache(Other.OffsetCache), |
| IncludeLoc(Other.IncludeLoc) { |
| Other.OffsetCache = nullptr; |
| } |
| |
| SourceMgr::SrcBuffer::~SrcBuffer() { |
| if (OffsetCache) { |
| size_t Sz = Buffer->getBufferSize(); |
| if (Sz <= std::numeric_limits<uint8_t>::max()) |
| delete static_cast<std::vector<uint8_t> *>(OffsetCache); |
| else if (Sz <= std::numeric_limits<uint16_t>::max()) |
| delete static_cast<std::vector<uint16_t> *>(OffsetCache); |
| else if (Sz <= std::numeric_limits<uint32_t>::max()) |
| delete static_cast<std::vector<uint32_t> *>(OffsetCache); |
| else |
| delete static_cast<std::vector<uint64_t> *>(OffsetCache); |
| OffsetCache = nullptr; |
| } |
| } |
| |
| std::pair<unsigned, unsigned> |
| SourceMgr::getLineAndColumn(SMLoc Loc, unsigned BufferID) const { |
| if (!BufferID) |
| BufferID = FindBufferContainingLoc(Loc); |
| assert(BufferID && "Invalid location!"); |
| |
| auto &SB = getBufferInfo(BufferID); |
| const char *Ptr = Loc.getPointer(); |
| |
| unsigned LineNo = SB.getLineNumber(Ptr); |
| const char *BufStart = SB.Buffer->getBufferStart(); |
| size_t NewlineOffs = StringRef(BufStart, Ptr - BufStart).find_last_of("\n\r"); |
| if (NewlineOffs == StringRef::npos) |
| NewlineOffs = ~(size_t)0; |
| return std::make_pair(LineNo, Ptr - BufStart - NewlineOffs); |
| } |
| |
| // FIXME: Note that the formatting of source locations is spread between |
| // multiple functions, some in SourceMgr and some in SMDiagnostic. A better |
| // solution would be a general-purpose source location formatter |
| // in one of those two classes, or possibly in SMLoc. |
| |
| /// Get a string with the source location formatted in the standard |
| /// style, but without the line offset. If \p IncludePath is true, the path |
| /// is included. If false, only the file name and extension are included. |
| std::string SourceMgr::getFormattedLocationNoOffset(SMLoc Loc, |
| bool IncludePath) const { |
| auto BufferID = FindBufferContainingLoc(Loc); |
| assert(BufferID && "Invalid location!"); |
| auto FileSpec = getBufferInfo(BufferID).Buffer->getBufferIdentifier(); |
| |
| if (IncludePath) { |
| return FileSpec.str() + ":" + std::to_string(FindLineNumber(Loc, BufferID)); |
| } else { |
| auto I = FileSpec.find_last_of("/\\"); |
| I = (I == FileSpec.size()) ? 0 : (I + 1); |
| return FileSpec.substr(I).str() + ":" + |
| std::to_string(FindLineNumber(Loc, BufferID)); |
| } |
| } |
| |
| /// Given a line and column number in a mapped buffer, turn it into an SMLoc. |
| /// This will return a null SMLoc if the line/column location is invalid. |
| SMLoc SourceMgr::FindLocForLineAndColumn(unsigned BufferID, unsigned LineNo, |
| unsigned ColNo) { |
| auto &SB = getBufferInfo(BufferID); |
| const char *Ptr = SB.getPointerForLineNumber(LineNo); |
| if (!Ptr) |
| return SMLoc(); |
| |
| // We start counting line and column numbers from 1. |
| if (ColNo != 0) |
| --ColNo; |
| |
| // If we have a column number, validate it. |
| if (ColNo) { |
| // Make sure the location is within the current line. |
| if (Ptr + ColNo > SB.Buffer->getBufferEnd()) |
| return SMLoc(); |
| |
| // Make sure there is no newline in the way. |
| if (StringRef(Ptr, ColNo).find_first_of("\n\r") != StringRef::npos) |
| return SMLoc(); |
| |
| Ptr += ColNo; |
| } |
| |
| return SMLoc::getFromPointer(Ptr); |
| } |
| |
| void SourceMgr::PrintIncludeStack(SMLoc IncludeLoc, raw_ostream &OS) const { |
| if (IncludeLoc == SMLoc()) |
| return; // Top of stack. |
| |
| unsigned CurBuf = FindBufferContainingLoc(IncludeLoc); |
| assert(CurBuf && "Invalid or unspecified location!"); |
| |
| PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS); |
| |
| OS << "Included from " << getBufferInfo(CurBuf).Buffer->getBufferIdentifier() |
| << ":" << FindLineNumber(IncludeLoc, CurBuf) << ":\n"; |
| } |
| |
| SMDiagnostic SourceMgr::GetMessage(SMLoc Loc, SourceMgr::DiagKind Kind, |
| const Twine &Msg, ArrayRef<SMRange> Ranges, |
| ArrayRef<SMFixIt> FixIts) const { |
| // First thing to do: find the current buffer containing the specified |
| // location to pull out the source line. |
| SmallVector<std::pair<unsigned, unsigned>, 4> ColRanges; |
| std::pair<unsigned, unsigned> LineAndCol; |
| StringRef BufferID = "<unknown>"; |
| StringRef LineStr; |
| |
| if (Loc.isValid()) { |
| unsigned CurBuf = FindBufferContainingLoc(Loc); |
| assert(CurBuf && "Invalid or unspecified location!"); |
| |
| const MemoryBuffer *CurMB = getMemoryBuffer(CurBuf); |
| BufferID = CurMB->getBufferIdentifier(); |
| |
| // Scan backward to find the start of the line. |
| const char *LineStart = Loc.getPointer(); |
| const char *BufStart = CurMB->getBufferStart(); |
| while (LineStart != BufStart && LineStart[-1] != '\n' && |
| LineStart[-1] != '\r') |
| --LineStart; |
| |
| // Get the end of the line. |
| const char *LineEnd = Loc.getPointer(); |
| const char *BufEnd = CurMB->getBufferEnd(); |
| while (LineEnd != BufEnd && LineEnd[0] != '\n' && LineEnd[0] != '\r') |
| ++LineEnd; |
| LineStr = StringRef(LineStart, LineEnd - LineStart); |
| |
| // Convert any ranges to column ranges that only intersect the line of the |
| // location. |
| for (unsigned i = 0, e = Ranges.size(); i != e; ++i) { |
| SMRange R = Ranges[i]; |
| if (!R.isValid()) |
| continue; |
| |
| // If the line doesn't contain any part of the range, then ignore it. |
| if (R.Start.getPointer() > LineEnd || R.End.getPointer() < LineStart) |
| continue; |
| |
| // Ignore pieces of the range that go onto other lines. |
| if (R.Start.getPointer() < LineStart) |
| R.Start = SMLoc::getFromPointer(LineStart); |
| if (R.End.getPointer() > LineEnd) |
| R.End = SMLoc::getFromPointer(LineEnd); |
| |
| // Translate from SMLoc ranges to column ranges. |
| // FIXME: Handle multibyte characters. |
| ColRanges.push_back(std::make_pair(R.Start.getPointer() - LineStart, |
| R.End.getPointer() - LineStart)); |
| } |
| |
| LineAndCol = getLineAndColumn(Loc, CurBuf); |
| } |
| |
| return SMDiagnostic(*this, Loc, BufferID, LineAndCol.first, |
| LineAndCol.second - 1, Kind, Msg.str(), LineStr, |
| ColRanges, FixIts); |
| } |
| |
| void SourceMgr::PrintMessage(raw_ostream &OS, const SMDiagnostic &Diagnostic, |
| bool ShowColors) const { |
| // Report the message with the diagnostic handler if present. |
| if (DiagHandler) { |
| DiagHandler(Diagnostic, DiagContext); |
| return; |
| } |
| |
| if (Diagnostic.getLoc().isValid()) { |
| unsigned CurBuf = FindBufferContainingLoc(Diagnostic.getLoc()); |
| assert(CurBuf && "Invalid or unspecified location!"); |
| PrintIncludeStack(getBufferInfo(CurBuf).IncludeLoc, OS); |
| } |
| |
| Diagnostic.print(nullptr, OS, ShowColors); |
| } |
| |
| void SourceMgr::PrintMessage(raw_ostream &OS, SMLoc Loc, |
| SourceMgr::DiagKind Kind, const Twine &Msg, |
| ArrayRef<SMRange> Ranges, ArrayRef<SMFixIt> FixIts, |
| bool ShowColors) const { |
| PrintMessage(OS, GetMessage(Loc, Kind, Msg, Ranges, FixIts), ShowColors); |
| } |
| |
| void SourceMgr::PrintMessage(SMLoc Loc, SourceMgr::DiagKind Kind, |
| const Twine &Msg, ArrayRef<SMRange> Ranges, |
| ArrayRef<SMFixIt> FixIts, bool ShowColors) const { |
| PrintMessage(errs(), Loc, Kind, Msg, Ranges, FixIts, ShowColors); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // SMFixIt Implementation |
| //===----------------------------------------------------------------------===// |
| |
| SMFixIt::SMFixIt(SMRange R, const Twine &Replacement) |
| : Range(R), Text(Replacement.str()) { |
| assert(R.isValid()); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // SMDiagnostic Implementation |
| //===----------------------------------------------------------------------===// |
| |
| SMDiagnostic::SMDiagnostic(const SourceMgr &sm, SMLoc L, StringRef FN, int Line, |
| int Col, SourceMgr::DiagKind Kind, StringRef Msg, |
| StringRef LineStr, |
| ArrayRef<std::pair<unsigned, unsigned>> Ranges, |
| ArrayRef<SMFixIt> Hints) |
| : SM(&sm), Loc(L), Filename(std::string(FN)), LineNo(Line), ColumnNo(Col), |
| Kind(Kind), Message(Msg), LineContents(LineStr), Ranges(Ranges.vec()), |
| FixIts(Hints.begin(), Hints.end()) { |
| llvm::sort(FixIts); |
| } |
| |
| static void buildFixItLine(std::string &CaretLine, std::string &FixItLine, |
| ArrayRef<SMFixIt> FixIts, |
| ArrayRef<char> SourceLine) { |
| if (FixIts.empty()) |
| return; |
| |
| const char *LineStart = SourceLine.begin(); |
| const char *LineEnd = SourceLine.end(); |
| |
| size_t PrevHintEndCol = 0; |
| |
| for (const llvm::SMFixIt &Fixit : FixIts) { |
| // If the fixit contains a newline or tab, ignore it. |
| if (Fixit.getText().find_first_of("\n\r\t") != StringRef::npos) |
| continue; |
| |
| SMRange R = Fixit.getRange(); |
| |
| // If the line doesn't contain any part of the range, then ignore it. |
| if (R.Start.getPointer() > LineEnd || R.End.getPointer() < LineStart) |
| continue; |
| |
| // Translate from SMLoc to column. |
| // Ignore pieces of the range that go onto other lines. |
| // FIXME: Handle multibyte characters in the source line. |
| unsigned FirstCol; |
| if (R.Start.getPointer() < LineStart) |
| FirstCol = 0; |
| else |
| FirstCol = R.Start.getPointer() - LineStart; |
| |
| // 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. |
| unsigned HintCol = FirstCol; |
| if (HintCol < PrevHintEndCol) |
| HintCol = PrevHintEndCol + 1; |
| |
| // FIXME: 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)sys::locale::columnWidth(Fixit.getText()) == |
| Fixit.getText().size()); |
| |
| // This relies on one byte per column in our fixit hints. |
| unsigned LastColumnModified = HintCol + Fixit.getText().size(); |
| if (LastColumnModified > FixItLine.size()) |
| FixItLine.resize(LastColumnModified, ' '); |
| |
| llvm::copy(Fixit.getText(), FixItLine.begin() + HintCol); |
| |
| PrevHintEndCol = LastColumnModified; |
| |
| // For replacements, mark the removal range with '~'. |
| // FIXME: Handle multibyte characters in the source line. |
| unsigned LastCol; |
| if (R.End.getPointer() >= LineEnd) |
| LastCol = LineEnd - LineStart; |
| else |
| LastCol = R.End.getPointer() - LineStart; |
| |
| std::fill(&CaretLine[FirstCol], &CaretLine[LastCol], '~'); |
| } |
| } |
| |
| static void printSourceLine(raw_ostream &S, StringRef LineContents) { |
| // Print out the source line one character at a time, so we can expand tabs. |
| for (unsigned i = 0, e = LineContents.size(), OutCol = 0; i != e; ++i) { |
| size_t NextTab = LineContents.find('\t', i); |
| // If there were no tabs left, print the rest, we are done. |
| if (NextTab == StringRef::npos) { |
| S << LineContents.drop_front(i); |
| break; |
| } |
| |
| // Otherwise, print from i to NextTab. |
| S << LineContents.slice(i, NextTab); |
| OutCol += NextTab - i; |
| i = NextTab; |
| |
| // If we have a tab, emit at least one space, then round up to 8 columns. |
| do { |
| S << ' '; |
| ++OutCol; |
| } while ((OutCol % TabStop) != 0); |
| } |
| S << '\n'; |
| } |
| |
| static bool isNonASCII(char c) { return c & 0x80; } |
| |
| void SMDiagnostic::print(const char *ProgName, raw_ostream &OS, bool ShowColors, |
| bool ShowKindLabel) const { |
| ColorMode Mode = ShowColors ? ColorMode::Auto : ColorMode::Disable; |
| |
| { |
| WithColor S(OS, raw_ostream::SAVEDCOLOR, true, false, Mode); |
| |
| if (ProgName && ProgName[0]) |
| S << ProgName << ": "; |
| |
| if (!Filename.empty()) { |
| if (Filename == "-") |
| S << "<stdin>"; |
| else |
| S << Filename; |
| |
| if (LineNo != -1) { |
| S << ':' << LineNo; |
| if (ColumnNo != -1) |
| S << ':' << (ColumnNo + 1); |
| } |
| S << ": "; |
| } |
| } |
| |
| if (ShowKindLabel) { |
| switch (Kind) { |
| case SourceMgr::DK_Error: |
| WithColor::error(OS, "", !ShowColors); |
| break; |
| case SourceMgr::DK_Warning: |
| WithColor::warning(OS, "", !ShowColors); |
| break; |
| case SourceMgr::DK_Note: |
| WithColor::note(OS, "", !ShowColors); |
| break; |
| case SourceMgr::DK_Remark: |
| WithColor::remark(OS, "", !ShowColors); |
| break; |
| } |
| } |
| |
| WithColor(OS, raw_ostream::SAVEDCOLOR, true, false, Mode) << Message << '\n'; |
| |
| if (LineNo == -1 || ColumnNo == -1) |
| return; |
| |
| // FIXME: If there are multibyte or multi-column characters in the source, all |
| // our ranges will be wrong. To do this properly, we'll need a byte-to-column |
| // map like Clang's TextDiagnostic. For now, we'll just handle tabs by |
| // expanding them later, and bail out rather than show incorrect ranges and |
| // misaligned fixits for any other odd characters. |
| if (any_of(LineContents, isNonASCII)) { |
| printSourceLine(OS, LineContents); |
| return; |
| } |
| size_t NumColumns = LineContents.size(); |
| |
| // Build the line with the caret and ranges. |
| std::string CaretLine(NumColumns + 1, ' '); |
| |
| // Expand any ranges. |
| for (const std::pair<unsigned, unsigned> &R : Ranges) |
| std::fill(&CaretLine[R.first], |
| &CaretLine[std::min((size_t)R.second, CaretLine.size())], '~'); |
| |
| // Add any fix-its. |
| // FIXME: Find the beginning of the line properly for multibyte characters. |
| std::string FixItInsertionLine; |
| buildFixItLine( |
| CaretLine, FixItInsertionLine, FixIts, |
| makeArrayRef(Loc.getPointer() - ColumnNo, LineContents.size())); |
| |
| // Finally, plop on the caret. |
| if (unsigned(ColumnNo) <= NumColumns) |
| CaretLine[ColumnNo] = '^'; |
| else |
| CaretLine[NumColumns] = '^'; |
| |
| // ... and remove trailing whitespace so the output doesn't wrap for it. We |
| // know that the line isn't completely empty because it has the caret in it at |
| // least. |
| CaretLine.erase(CaretLine.find_last_not_of(' ') + 1); |
| |
| printSourceLine(OS, LineContents); |
| |
| { |
| ColorMode Mode = ShowColors ? ColorMode::Auto : ColorMode::Disable; |
| WithColor S(OS, raw_ostream::GREEN, true, false, Mode); |
| |
| // Print out the caret line, matching tabs in the source line. |
| for (unsigned i = 0, e = CaretLine.size(), OutCol = 0; i != e; ++i) { |
| if (i >= LineContents.size() || LineContents[i] != '\t') { |
| S << CaretLine[i]; |
| ++OutCol; |
| continue; |
| } |
| |
| // Okay, we have a tab. Insert the appropriate number of characters. |
| do { |
| S << CaretLine[i]; |
| ++OutCol; |
| } while ((OutCol % TabStop) != 0); |
| } |
| S << '\n'; |
| } |
| |
| // Print out the replacement line, matching tabs in the source line. |
| if (FixItInsertionLine.empty()) |
| return; |
| |
| for (size_t i = 0, e = FixItInsertionLine.size(), OutCol = 0; i < e; ++i) { |
| if (i >= LineContents.size() || LineContents[i] != '\t') { |
| OS << FixItInsertionLine[i]; |
| ++OutCol; |
| continue; |
| } |
| |
| // Okay, we have a tab. Insert the appropriate number of characters. |
| do { |
| OS << FixItInsertionLine[i]; |
| // FIXME: This is trying not to break up replacements, but then to re-sync |
| // with the tabs between replacements. This will fail, though, if two |
| // fix-it replacements are exactly adjacent, or if a fix-it contains a |
| // space. Really we should be precomputing column widths, which we'll |
| // need anyway for multibyte chars. |
| if (FixItInsertionLine[i] != ' ') |
| ++i; |
| ++OutCol; |
| } while (((OutCol % TabStop) != 0) && i != e); |
| } |
| OS << '\n'; |
| } |