diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 19:53:05 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2019-12-20 19:53:05 +0000 |
| commit | 0b57cec536236d46e3dba9bd041533462f33dbb7 (patch) | |
| tree | 56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/Support/BinaryStreamWriter.cpp | |
| parent | 718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff) | |
Notes
Diffstat (limited to 'contrib/llvm/lib/Support/BinaryStreamWriter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Support/BinaryStreamWriter.cpp | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/contrib/llvm/lib/Support/BinaryStreamWriter.cpp b/contrib/llvm/lib/Support/BinaryStreamWriter.cpp deleted file mode 100644 index 986e18da281d..000000000000 --- a/contrib/llvm/lib/Support/BinaryStreamWriter.cpp +++ /dev/null @@ -1,103 +0,0 @@ -//===- BinaryStreamWriter.cpp - Writes objects to a BinaryStream ----------===// -// -// 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 -// -//===----------------------------------------------------------------------===// - -#include "llvm/Support/BinaryStreamWriter.h" - -#include "llvm/Support/BinaryStreamError.h" -#include "llvm/Support/BinaryStreamReader.h" -#include "llvm/Support/BinaryStreamRef.h" -#include "llvm/Support/LEB128.h" - -using namespace llvm; - -BinaryStreamWriter::BinaryStreamWriter(WritableBinaryStreamRef Ref) - : Stream(Ref) {} - -BinaryStreamWriter::BinaryStreamWriter(WritableBinaryStream &Stream) - : Stream(Stream) {} - -BinaryStreamWriter::BinaryStreamWriter(MutableArrayRef<uint8_t> Data, - llvm::support::endianness Endian) - : Stream(Data, Endian) {} - -Error BinaryStreamWriter::writeBytes(ArrayRef<uint8_t> Buffer) { - if (auto EC = Stream.writeBytes(Offset, Buffer)) - return EC; - Offset += Buffer.size(); - return Error::success(); -} - -Error BinaryStreamWriter::writeULEB128(uint64_t Value) { - uint8_t EncodedBytes[10] = {0}; - unsigned Size = encodeULEB128(Value, &EncodedBytes[0]); - return writeBytes({EncodedBytes, Size}); -} - -Error BinaryStreamWriter::writeSLEB128(int64_t Value) { - uint8_t EncodedBytes[10] = {0}; - unsigned Size = encodeSLEB128(Value, &EncodedBytes[0]); - return writeBytes({EncodedBytes, Size}); -} - -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(arrayRefFromStringRef(Str)); -} - -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); - while (Offset < NewOffset) - if (auto EC = writeInteger('\0')) - return EC; - return Error::success(); -} |
