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📄 AArch64TargetParser.def(12.01 KB)
📄 AArch64TargetParser.h(4.89 KB)
📄 AMDGPUMetadata.h(17.98 KB)
📄 AMDHSAKernelDescriptor.h(7.63 KB)
📄 ARMAttributeParser.h(3.2 KB)
📄 ARMBuildAttributes.h(8.6 KB)
📄 ARMEHABI.h(3.72 KB)
📄 ARMTargetParser.def(18.94 KB)
📄 ARMTargetParser.h(8.76 KB)
📄 ARMWinEH.h(18.27 KB)
📄 AlignOf.h(1.56 KB)
📄 Alignment.h(12.95 KB)
📄 Allocator.h(16.54 KB)
📄 AllocatorBase.h(3.87 KB)
📄 ArrayRecycler.h(4.78 KB)
📄 Atomic.h(1.09 KB)
📄 AtomicOrdering.h(6.01 KB)
📄 Automaton.h(9.64 KB)
📄 Base64.h(1.84 KB)
📄 BinaryByteStream.h(9.14 KB)
📄 BinaryItemStream.h(3.63 KB)
📄 BinaryStream.h(3.75 KB)
📄 BinaryStreamArray.h(12.46 KB)
📄 BinaryStreamError.h(1.29 KB)
📄 BinaryStreamReader.h(11.01 KB)
📄 BinaryStreamRef.h(10.09 KB)
📄 BinaryStreamWriter.h(7.79 KB)
📄 BlockFrequency.h(2.41 KB)
📄 BranchProbability.h(7.92 KB)
📄 BuryPointer.h(1.03 KB)
📄 CBindingWrapping.h(1.86 KB)
📄 CFGDiff.h(9.95 KB)
📄 CFGUpdate.h(4.12 KB)
📄 COM.h(1004 B)
📄 CRC.h(1.63 KB)
📄 CachePruning.h(3.5 KB)
📄 Capacity.h(972 B)
📄 Casting.h(13.92 KB)
📄 CheckedArithmetic.h(3.71 KB)
📄 Chrono.h(5.78 KB)
📄 CodeGen.h(1.96 KB)
📄 CodeGenCoverage.h(1.18 KB)
📄 CommandLine.h(71.22 KB)
📄 Compiler.h(19.5 KB)
📄 Compression.h(1.39 KB)
📄 ConvertUTF.h(11.4 KB)
📄 CrashRecoveryContext.h(9.26 KB)
📄 DJB.h(1.05 KB)
📄 DOTGraphTraits.h(5.58 KB)
📄 DataExtractor.h(30.28 KB)
📄 DataTypes.h(775 B)
📄 Debug.h(4.7 KB)
📄 DebugCounter.h(7.01 KB)
📄 DynamicLibrary.h(5.77 KB)
📄 ELFAttributeParser.h(2.22 KB)
📄 ELFAttributes.h(1.02 KB)
📄 Endian.h(14.28 KB)
📄 EndianStream.h(1.93 KB)
📄 Errc.h(3.8 KB)
📄 Errno.h(1.45 KB)
📄 Error.h(43.82 KB)
📄 ErrorHandling.h(6.39 KB)
📄 ErrorOr.h(7.48 KB)
📄 ExtensibleRTTI.h(4.02 KB)
📄 FileCheck.h(6.69 KB)
📄 FileCollector.h(3.74 KB)
📄 FileOutputBuffer.h(3.36 KB)
📄 FileSystem.h(53.03 KB)
📄 FileUtilities.h(3.83 KB)
📄 Format.h(9.45 KB)
📄 FormatAdapters.h(3.38 KB)
📄 FormatCommon.h(2.05 KB)
📄 FormatProviders.h(15.27 KB)
📄 FormatVariadic.h(9.88 KB)
📄 FormatVariadicDetails.h(5.3 KB)
📄 FormattedStream.h(6.42 KB)
📄 GenericDomTree.h(30.89 KB)
📄 GenericDomTreeConstruction.h(63.42 KB)
📄 GenericIteratedDominanceFrontier.h(7.31 KB)
📄 GlobPattern.h(1.35 KB)
📄 GraphWriter.h(11.79 KB)
📄 Host.h(2.68 KB)
📄 InitLLVM.h(1.79 KB)
📄 ItaniumManglingCanonicalizer.h(3.17 KB)
📄 JSON.h(28.25 KB)
📄 KnownBits.h(8.35 KB)
📄 LEB128.h(5.74 KB)
📄 LineIterator.h(2.62 KB)
📄 Locale.h(223 B)
📄 LockFileManager.h(3.13 KB)
📄 LowLevelTypeImpl.h(11.94 KB)
📄 MD5.h(3.39 KB)
📄 MSVCErrorWorkarounds.h(2.62 KB)
📄 MachineValueType.h(42.37 KB)
📄 ManagedStatic.h(4.21 KB)
📄 MathExtras.h(32.81 KB)
📄 MemAlloc.h(3.21 KB)
📄 Memory.h(6.94 KB)
📄 MemoryBuffer.h(10.98 KB)
📄 MipsABIFlags.h(3.92 KB)
📄 Mutex.h(2.14 KB)
📄 NativeFormatting.h(1.64 KB)
📄 OnDiskHashTable.h(21.97 KB)
📄 OptimizedStructLayout.h(5.89 KB)
📄 Parallel.h(5.99 KB)
📄 Path.h(15.6 KB)
📄 PluginLoader.h(1.29 KB)
📄 PointerLikeTypeTraits.h(5.69 KB)
📄 PrettyStackTrace.h(4.45 KB)
📄 Printable.h(1.5 KB)
📄 Process.h(9.31 KB)
📄 Program.h(10.35 KB)
📄 RISCVAttributeParser.h(1.15 KB)
📄 RISCVAttributes.h(1.2 KB)
📄 RISCVTargetParser.def(446 B)
📄 RWMutex.h(5.65 KB)
📄 RandomNumberGenerator.h(2.29 KB)
📄 Recycler.h(3.47 KB)
📄 RecyclingAllocator.h(2.38 KB)
📄 Regex.h(4.37 KB)
📄 Registry.h(5.14 KB)
📄 ReverseIteration.h(360 B)
📄 SHA1.h(2.37 KB)
📄 SMLoc.h(1.78 KB)
📄 SMTAPI.h(16.33 KB)
📄 SaveAndRestore.h(1.02 KB)
📄 ScaledNumber.h(30.65 KB)
📄 ScopedPrinter.h(11.39 KB)
📄 Signals.h(5.22 KB)
📄 Signposts.h(1.29 KB)
📄 SmallVectorMemoryBuffer.h(2.28 KB)
📁 Solaris
📄 SourceMgr.h(10.37 KB)
📄 SpecialCaseList.h(6.01 KB)
📄 StringSaver.h(1.94 KB)
📄 SuffixTree.h(13.15 KB)
📄 SwapByteOrder.h(4.8 KB)
📄 SymbolRemappingReader.h(4.36 KB)
📄 SystemUtils.h(1.02 KB)
📄 TarWriter.h(941 B)
📄 TargetOpcodes.def(22.01 KB)
📄 TargetParser.h(4.08 KB)
📄 TargetRegistry.h(46.87 KB)
📄 TargetSelect.h(6.2 KB)
📄 TaskQueue.h(4.24 KB)
📄 ThreadLocal.h(2.08 KB)
📄 ThreadPool.h(3.44 KB)
📄 Threading.h(10.62 KB)
📄 TimeProfiler.h(3.46 KB)
📄 Timer.h(8.93 KB)
📄 ToolOutputFile.h(2.24 KB)
📄 TrailingObjects.h(15.19 KB)
📄 TrigramIndex.h(2.84 KB)
📄 TypeName.h(2.13 KB)
📄 TypeSize.h(8.53 KB)
📄 Unicode.h(2.5 KB)
📄 UnicodeCharRanges.h(3.27 KB)
📄 Valgrind.h(1.16 KB)
📄 VersionTuple.h(5.22 KB)
📄 VirtualFileSystem.h(28.28 KB)
📄 Watchdog.h(1.15 KB)
📄 Win64EH.h(4.82 KB)
📁 Windows
📄 WindowsError.h(541 B)
📄 WithColor.h(4.64 KB)
📄 X86DisassemblerDecoderCommon.h(29.39 KB)
📄 X86TargetParser.def(8.21 KB)
📄 X86TargetParser.h(3.57 KB)
📄 YAMLParser.h(16.29 KB)
📄 YAMLTraits.h(67.62 KB)
📄 circular_raw_ostream.h(4.97 KB)
📄 raw_os_ostream.h(1.29 KB)
📄 raw_ostream.h(20.82 KB)
📄 raw_sha1_ostream.h(1.29 KB)
📄 thread.h(1.33 KB)
📄 type_traits.h(6.75 KB)
📄 xxhash.h(1.92 KB)

Editing: BinaryByteStream.h

//===- BinaryByteStream.h ---------------------------------------*- C++ -*-===//
//
// 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
//===----------------------------------------------------------------------===//
// A BinaryStream which stores data in a single continguous memory buffer.
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_BINARYBYTESTREAM_H
#define LLVM_SUPPORT_BINARYBYTESTREAM_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/BinaryStream.h"
#include "llvm/Support/BinaryStreamError.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileOutputBuffer.h"
#include "llvm/Support/MemoryBuffer.h"
#include <algorithm>
#include <cstdint>
#include <cstring>
#include <memory>

namespace llvm {

/// An implementation of BinaryStream which holds its entire data set
/// in a single contiguous buffer.  BinaryByteStream guarantees that no read
/// operation will ever incur a copy.  Note that BinaryByteStream does not
/// own the underlying buffer.
class BinaryByteStream : public BinaryStream {
public:
  BinaryByteStream() = default;
  BinaryByteStream(ArrayRef<uint8_t> Data, llvm::support::endianness Endian)
      : Endian(Endian), Data(Data) {}
  BinaryByteStream(StringRef Data, llvm::support::endianness Endian)
      : Endian(Endian), Data(Data.bytes_begin(), Data.bytes_end()) {}

llvm::support::endianness getEndian() const override { return Endian; }

Error readBytes(uint32_t Offset, uint32_t Size,
                  ArrayRef<uint8_t> &Buffer) override {
    if (auto EC = checkOffsetForRead(Offset, Size))
      return EC;
    Buffer = Data.slice(Offset, Size);
    return Error::success();
  }

Error readLongestContiguousChunk(uint32_t Offset,
                                   ArrayRef<uint8_t> &Buffer) override {
    if (auto EC = checkOffsetForRead(Offset, 1))
      return EC;
    Buffer = Data.slice(Offset);
    return Error::success();
  }

uint32_t getLength() override { return Data.size(); }

ArrayRef<uint8_t> data() const { return Data; }

StringRef str() const {
    const char *CharData = reinterpret_cast<const char *>(Data.data());
    return StringRef(CharData, Data.size());
  }

protected:
  llvm::support::endianness Endian;
  ArrayRef<uint8_t> Data;
};

/// An implementation of BinaryStream whose data is backed by an llvm
/// MemoryBuffer object.  MemoryBufferByteStream owns the MemoryBuffer in
/// question.  As with BinaryByteStream, reading from a MemoryBufferByteStream
/// will never cause a copy.
class MemoryBufferByteStream : public BinaryByteStream {
public:
  MemoryBufferByteStream(std::unique_ptr<MemoryBuffer> Buffer,
                         llvm::support::endianness Endian)
      : BinaryByteStream(Buffer->getBuffer(), Endian),
        MemBuffer(std::move(Buffer)) {}

std::unique_ptr<MemoryBuffer> MemBuffer;
};

/// An implementation of BinaryStream which holds its entire data set
/// in a single contiguous buffer.  As with BinaryByteStream, the mutable
/// version also guarantees that no read operation will ever incur a copy,
/// and similarly it does not own the underlying buffer.
class MutableBinaryByteStream : public WritableBinaryStream {
public:
  MutableBinaryByteStream() = default;
  MutableBinaryByteStream(MutableArrayRef<uint8_t> Data,
                          llvm::support::endianness Endian)
      : Data(Data), ImmutableStream(Data, Endian) {}

llvm::support::endianness getEndian() const override {
    return ImmutableStream.getEndian();
  }

Error readBytes(uint32_t Offset, uint32_t Size,
                  ArrayRef<uint8_t> &Buffer) override {
    return ImmutableStream.readBytes(Offset, Size, Buffer);
  }

Error readLongestContiguousChunk(uint32_t Offset,
                                   ArrayRef<uint8_t> &Buffer) override {
    return ImmutableStream.readLongestContiguousChunk(Offset, Buffer);
  }

uint32_t getLength() override { return ImmutableStream.getLength(); }

Error writeBytes(uint32_t Offset, ArrayRef<uint8_t> Buffer) override {
    if (Buffer.empty())
      return Error::success();

if (auto EC = checkOffsetForWrite(Offset, Buffer.size()))
      return EC;

uint8_t *DataPtr = const_cast<uint8_t *>(Data.data());
    ::memcpy(DataPtr + Offset, Buffer.data(), Buffer.size());
    return Error::success();
  }

Error commit() override { return Error::success(); }

MutableArrayRef<uint8_t> data() const { return Data; }

private:
  MutableArrayRef<uint8_t> Data;
  BinaryByteStream ImmutableStream;
};

/// An implementation of WritableBinaryStream which can write at its end
/// causing the underlying data to grow.  This class owns the underlying data.
class AppendingBinaryByteStream : public WritableBinaryStream {
  std::vector<uint8_t> Data;
  llvm::support::endianness Endian = llvm::support::little;

public:
  AppendingBinaryByteStream() = default;
  AppendingBinaryByteStream(llvm::support::endianness Endian)
      : Endian(Endian) {}

void clear() { Data.clear(); }

llvm::support::endianness getEndian() const override { return Endian; }

Error readBytes(uint32_t Offset, uint32_t Size,
                  ArrayRef<uint8_t> &Buffer) override {
    if (auto EC = checkOffsetForWrite(Offset, Buffer.size()))
      return EC;

Buffer = makeArrayRef(Data).slice(Offset, Size);
    return Error::success();
  }

void insert(uint32_t Offset, ArrayRef<uint8_t> Bytes) {
    Data.insert(Data.begin() + Offset, Bytes.begin(), Bytes.end());
  }

Error readLongestContiguousChunk(uint32_t Offset,
                                   ArrayRef<uint8_t> &Buffer) override {
    if (auto EC = checkOffsetForWrite(Offset, 1))
      return EC;

Buffer = makeArrayRef(Data).slice(Offset);
    return Error::success();
  }

uint32_t getLength() override { return Data.size(); }

Error writeBytes(uint32_t Offset, ArrayRef<uint8_t> Buffer) override {
    if (Buffer.empty())
      return Error::success();

// This is well-defined for any case except where offset is strictly
    // greater than the current length.  If offset is equal to the current
    // length, we can still grow.  If offset is beyond the current length, we
    // would have to decide how to deal with the intermediate uninitialized
    // bytes.  So we punt on that case for simplicity and just say it's an
    // error.
    if (Offset > getLength())
      return make_error<BinaryStreamError>(stream_error_code::invalid_offset);

uint32_t RequiredSize = Offset + Buffer.size();
    if (RequiredSize > Data.size())
      Data.resize(RequiredSize);

::memcpy(Data.data() + Offset, Buffer.data(), Buffer.size());
    return Error::success();
  }

Error commit() override { return Error::success(); }

/// Return the properties of this stream.
  virtual BinaryStreamFlags getFlags() const override {
    return BSF_Write | BSF_Append;
  }

MutableArrayRef<uint8_t> data() { return Data; }
};

/// An implementation of WritableBinaryStream backed by an llvm
/// FileOutputBuffer.
class FileBufferByteStream : public WritableBinaryStream {
private:
  class StreamImpl : public MutableBinaryByteStream {
  public:
    StreamImpl(std::unique_ptr<FileOutputBuffer> Buffer,
               llvm::support::endianness Endian)
        : MutableBinaryByteStream(
              MutableArrayRef<uint8_t>(Buffer->getBufferStart(),
                                       Buffer->getBufferEnd()),
              Endian),
          FileBuffer(std::move(Buffer)) {}

Error commit() override {
      if (FileBuffer->commit())
        return make_error<BinaryStreamError>(
            stream_error_code::filesystem_error);
      return Error::success();
    }

/// Returns a pointer to the start of the buffer.
    uint8_t *getBufferStart() const { return FileBuffer->getBufferStart(); }

/// Returns a pointer to the end of the buffer.
    uint8_t *getBufferEnd() const { return FileBuffer->getBufferEnd(); }

private:
    std::unique_ptr<FileOutputBuffer> FileBuffer;
  };

public:
  FileBufferByteStream(std::unique_ptr<FileOutputBuffer> Buffer,
                       llvm::support::endianness Endian)
      : Impl(std::move(Buffer), Endian) {}

llvm::support::endianness getEndian() const override {
    return Impl.getEndian();
  }

Error readBytes(uint32_t Offset, uint32_t Size,
                  ArrayRef<uint8_t> &Buffer) override {
    return Impl.readBytes(Offset, Size, Buffer);
  }

Error readLongestContiguousChunk(uint32_t Offset,
                                   ArrayRef<uint8_t> &Buffer) override {
    return Impl.readLongestContiguousChunk(Offset, Buffer);
  }

uint32_t getLength() override { return Impl.getLength(); }

Error writeBytes(uint32_t Offset, ArrayRef<uint8_t> Data) override {
    return Impl.writeBytes(Offset, Data);
  }

Error commit() override { return Impl.commit(); }

/// Returns a pointer to the start of the buffer.
  uint8_t *getBufferStart() const { return Impl.getBufferStart(); }

/// Returns a pointer to the end of the buffer.
  uint8_t *getBufferEnd() const { return Impl.getBufferEnd(); }

private:
  StreamImpl Impl;
};

} // end namespace llvm

#endif // LLVM_SUPPORT_BYTESTREAM_H

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Editing: BinaryByteStream.h

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