Exemplo n.º 1
0
static unsigned getColumnNumber(StringRef buffer, llvm::SMLoc loc) {
  assert(loc.getPointer() >= buffer.data());
  assert((size_t)(loc.getPointer() - buffer.data()) <= buffer.size());

  StringRef UpToLoc = buffer.slice(0, loc.getPointer() - buffer.data());

  size_t ColumnNo = UpToLoc.size();
  size_t NewlinePos = UpToLoc.find_last_of("\r\n");
  if (NewlinePos != StringRef::npos)
    ColumnNo -= NewlinePos;

  return static_cast<unsigned>(ColumnNo);
}
Exemplo n.º 2
0
SourceLocation
ClangAsmParserCallback::translateLocation(const llvm::SourceMgr &LSM,
                                          llvm::SMLoc SMLoc) {
  // Compute an offset into the inline asm buffer.
  // FIXME: This isn't right if .macro is involved (but hopefully, no
  // real-world code does that).
  const llvm::MemoryBuffer *LBuf =
      LSM.getMemoryBuffer(LSM.FindBufferContainingLoc(SMLoc));
  unsigned Offset = SMLoc.getPointer() - LBuf->getBufferStart();

  // Figure out which token that offset points into.
  const unsigned *TokOffsetPtr =
      std::lower_bound(AsmTokOffsets.begin(), AsmTokOffsets.end(), Offset);
  unsigned TokIndex = TokOffsetPtr - AsmTokOffsets.begin();
  unsigned TokOffset = *TokOffsetPtr;

  // If we come up with an answer which seems sane, use it; otherwise,
  // just point at the __asm keyword.
  // FIXME: Assert the answer is sane once we handle .macro correctly.
  SourceLocation Loc = AsmLoc;
  if (TokIndex < AsmToks.size()) {
    const Token &Tok = AsmToks[TokIndex];
    Loc = Tok.getLocation();
    Loc = Loc.getLocWithOffset(Offset - TokOffset);
  }
  return Loc;
}