Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/lib/Support/BinaryStreamWriter.cpp

@@ -1,91 +0,0 @@
-//===- 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 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::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();
-}