mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 03:53:04 +02:00
28d3fba1b3
This was reverted due to a "missing" file, but in reality what happened was that I renamed a file, and then due to a merge conflict both the old file and the new file got added to the repository. This led to an unused cpp file being in the repo and not referenced by any CMakeLists.txt but #including a .h file that wasn't in the repo. In an even more unfortunate coincidence, CMake didn't report the unused cpp file because it was in a subdirectory of the folder with the CMakeLists.txt, and not in the same directory as any CMakeLists.txt. The presence of the unused file was then breaking certain tools that determine file lists by globbing rather than by what's specified in CMakeLists.txt In any case, the fix is to just remove the unused file from the patch set. llvm-svn: 302042
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
//===- BinaryStreamWriter.cpp - Writes objects to a BinaryStream ----------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/BinaryStreamWriter.h"
|
|
|
|
#include "llvm/Support/BinaryStreamError.h"
|
|
#include "llvm/Support/BinaryStreamReader.h"
|
|
#include "llvm/Support/BinaryStreamRef.h"
|
|
|
|
using namespace llvm;
|
|
|
|
BinaryStreamWriter::BinaryStreamWriter(WritableBinaryStreamRef S)
|
|
: Stream(S), Offset(0) {}
|
|
|
|
Error BinaryStreamWriter::writeBytes(ArrayRef<uint8_t> Buffer) {
|
|
if (auto EC = Stream.writeBytes(Offset, Buffer))
|
|
return EC;
|
|
Offset += Buffer.size();
|
|
return Error::success();
|
|
}
|
|
|
|
Error BinaryStreamWriter::writeCString(StringRef Str) {
|
|
if (auto EC = writeFixedString(Str))
|
|
return EC;
|
|
if (auto EC = writeObject('\0'))
|
|
return EC;
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
Error BinaryStreamWriter::writeFixedString(StringRef Str) {
|
|
return writeBytes(ArrayRef<uint8_t>(Str.bytes_begin(), Str.bytes_end()));
|
|
}
|
|
|
|
Error BinaryStreamWriter::writeStreamRef(BinaryStreamRef Ref) {
|
|
return writeStreamRef(Ref, Ref.getLength());
|
|
}
|
|
|
|
Error BinaryStreamWriter::writeStreamRef(BinaryStreamRef Ref, uint32_t Length) {
|
|
BinaryStreamReader SrcReader(Ref.slice(0, Length));
|
|
// This is a bit tricky. If we just call readBytes, we are requiring that it
|
|
// return us the entire stream as a contiguous buffer. There is no guarantee
|
|
// this can be satisfied by returning a reference straight from the buffer, as
|
|
// an implementation may not store all data in a single contiguous buffer. So
|
|
// we iterate over each contiguous chunk, writing each one in succession.
|
|
while (SrcReader.bytesRemaining() > 0) {
|
|
ArrayRef<uint8_t> Chunk;
|
|
if (auto EC = SrcReader.readLongestContiguousChunk(Chunk))
|
|
return EC;
|
|
if (auto EC = writeBytes(Chunk))
|
|
return EC;
|
|
}
|
|
return Error::success();
|
|
}
|
|
|
|
std::pair<BinaryStreamWriter, BinaryStreamWriter>
|
|
BinaryStreamWriter::split(uint32_t Off) const {
|
|
assert(getLength() >= Off);
|
|
|
|
WritableBinaryStreamRef First = Stream.drop_front(Offset);
|
|
|
|
WritableBinaryStreamRef Second = First.drop_front(Off);
|
|
First = First.keep_front(Off);
|
|
BinaryStreamWriter W1{First};
|
|
BinaryStreamWriter W2{Second};
|
|
return std::make_pair(W1, W2);
|
|
}
|
|
|
|
Error BinaryStreamWriter::padToAlignment(uint32_t Align) {
|
|
uint32_t NewOffset = alignTo(Offset, Align);
|
|
if (NewOffset > getLength())
|
|
return make_error<BinaryStreamError>(stream_error_code::stream_too_short);
|
|
Offset = NewOffset;
|
|
return Error::success();
|
|
}
|