diff options
author | orivej <[email protected]> | 2022-02-10 16:44:49 +0300 |
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committer | Daniil Cherednik <[email protected]> | 2022-02-10 16:44:49 +0300 |
commit | 718c552901d703c502ccbefdfc3c9028d608b947 (patch) | |
tree | 46534a98bbefcd7b1f3faa5b52c138ab27db75b7 /contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp | |
parent | e9656aae26e0358d5378e5b63dcac5c8dbe0e4d0 (diff) |
Restoring authorship annotation for <[email protected]>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp')
-rw-r--r-- | contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp | 206 |
1 files changed, 103 insertions, 103 deletions
diff --git a/contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp b/contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp index 986e18da281..c6a831e355d 100644 --- a/contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp +++ b/contrib/libs/llvm12/lib/Support/BinaryStreamWriter.cpp @@ -1,103 +1,103 @@ -//===- 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(); -} +//===- 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(); +} |