Error llvm::pdb::readSparseBitVector(BinaryStreamReader &Stream,
SparseBitVector<> &V) {
uint32_t NumWords;
if (auto EC = Stream.readInteger(NumWords))
return joinErrors(
std::move(EC),
make_error<RawError>(raw_error_code::corrupt_file,
"Expected hash table number of words"));
for (uint32_t I = 0; I != NumWords; ++I) {
uint32_t Word;
if (auto EC = Stream.readInteger(Word))
return joinErrors(std::move(EC),
make_error<RawError>(raw_error_code::corrupt_file,
"Expected hash table word"));
for (unsigned Idx = 0; Idx < 32; ++Idx)
if (Word & (1U << Idx))
V.set((I * 32) + Idx);
}
return Error::success();
}
Error NamedStreamMap::load(BinaryStreamReader &Stream) {
Mapping.clear();
FinalizedHashTable.clear();
FinalizedInfo.reset();
uint32_t StringBufferSize;
if (auto EC = Stream.readInteger(StringBufferSize))
return joinErrors(std::move(EC),
make_error<RawError>(raw_error_code::corrupt_file,
"Expected string buffer size"));
BinaryStreamRef StringsBuffer;
if (auto EC = Stream.readStreamRef(StringsBuffer, StringBufferSize))
return EC;
HashTable OffsetIndexMap;
if (auto EC = OffsetIndexMap.load(Stream))
return EC;
uint32_t NameOffset;
uint32_t NameIndex;
for (const auto &Entry : OffsetIndexMap) {
std::tie(NameOffset, NameIndex) = Entry;
// Compute the offset of the start of the string relative to the stream.
BinaryStreamReader NameReader(StringsBuffer);
NameReader.setOffset(NameOffset);
// Pump out our c-string from the stream.
StringRef Str;
if (auto EC = NameReader.readCString(Str))
return joinErrors(std::move(EC),
make_error<RawError>(raw_error_code::corrupt_file,
"Expected name map name"));
// Add this to a string-map from name to stream number.
Mapping.insert({Str, NameIndex});
}
return Error::success();
}