StringRef SourceManager::extractText(CharSourceRange Range,
Optional<unsigned> BufferID) const {
assert(Range.isValid() && "range should be valid");
if (!BufferID)
BufferID = findBufferContainingLoc(Range.getStart());
StringRef Buffer = LLVMSourceMgr.getMemoryBuffer(*BufferID)->getBuffer();
return Buffer.substr(getLocOffsetInBuffer(Range.getStart(), *BufferID),
Range.getByteLength());
}
bool
EditorAdapter::cacheReplacement(CharSourceRange Range, StringRef Text) const {
if (!CacheEnabled)
return false;
unsigned SwiftBufferID, Offset;
std::tie(SwiftBufferID, Offset) = getLocInfo(Range.getStart());
Replacement R { Offset, Range.getByteLength(), Text };
if (Replacements.count(R)) {
return true;
} else {
Replacements.insert(R);
}
return false;
}
void SourceManager::closeVirtualFile(SourceLoc end) {
auto *virtualFile = const_cast<VirtualFile *>(getVirtualFile(end));
if (!virtualFile) {
#ifndef NDEBUG
unsigned bufferID = findBufferContainingLoc(end);
CharSourceRange fullRange = getRangeForBuffer(bufferID);
assert((fullRange.getByteLength() == 0 ||
getVirtualFile(end.getAdvancedLoc(-1))) &&
"no open virtual file for this location");
assert(fullRange.getEnd() == end);
#endif
return;
}
CachedVFile = {nullptr, nullptr};
CharSourceRange oldRange = virtualFile->Range;
virtualFile->Range = CharSourceRange(*this, virtualFile->Range.getStart(),
end);
VirtualFiles[end.Value.getPointer()] = std::move(*virtualFile);
bool existed = VirtualFiles.erase(oldRange.getEnd().Value.getPointer());
assert(existed);
(void)existed;
}