Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- TpiStreamBuilder.h - PDB Tpi Stream Creation -------------*- 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

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_DEBUGINFO_PDB_NATIVE_TPISTREAMBUILDER_H

#define LLVM_DEBUGINFO_PDB_NATIVE_TPISTREAMBUILDER_H

#include "llvm/DebugInfo/CodeView/CVRecord.h"

#include "llvm/DebugInfo/CodeView/TypeIndex.h"

#include "llvm/DebugInfo/PDB/Native/RawConstants.h"

#include "llvm/Support/Allocator.h"

#include "llvm/Support/BinaryStreamRef.h"

#include "llvm/Support/Error.h"

#include <vector>

namespace llvm {

class BinaryByteStream;

template <typename T> struct BinaryItemTraits;

template <> struct BinaryItemTraits<llvm::codeview::CVType> {

  static size_t length(const codeview::CVType &Item) { return Item.length(); }

  static ArrayRef<uint8_t> bytes(const codeview::CVType &Item) {

    return Item.data();

  }

};

namespace msf {

class MSFBuilder;

struct MSFLayout;

}

namespace pdb {

struct TpiStreamHeader;

class TpiStreamBuilder {

public:

  explicit TpiStreamBuilder(msf::MSFBuilder &Msf, uint32_t StreamIdx);

  ~TpiStreamBuilder();

  TpiStreamBuilder(const TpiStreamBuilder &) = delete;

  TpiStreamBuilder &operator=(const TpiStreamBuilder &) = delete;

  void setVersionHeader(PdbRaw_TpiVer Version);

  void addTypeRecord(ArrayRef<uint8_t> Type, std::optional<uint32_t> Hash);

  void addTypeRecords(ArrayRef<uint8_t> Types, ArrayRef<uint16_t> Sizes,

                      ArrayRef<uint32_t> Hashes);

  Error finalizeMsfLayout();

  uint32_t getRecordCount() const { return TypeRecordCount; }

  Error commit(const msf::MSFLayout &Layout, WritableBinaryStreamRef Buffer);

  uint32_t calculateSerializedLength();

private:

  void updateTypeIndexOffsets(ArrayRef<uint16_t> Sizes);

  uint32_t calculateHashBufferSize() const;

  uint32_t calculateIndexOffsetSize() const;

  Error finalize();

  msf::MSFBuilder &Msf;

  BumpPtrAllocator &Allocator;

  uint32_t TypeRecordCount = 0;

  size_t TypeRecordBytes = 0;

  PdbRaw_TpiVer VerHeader = PdbRaw_TpiVer::PdbTpiV80;

  std::vector<ArrayRef<uint8_t>> TypeRecBuffers;

  std::vector<uint32_t> TypeHashes;

  std::vector<codeview::TypeIndexOffset> TypeIndexOffsets;

  uint32_t HashStreamIndex = kInvalidStreamIndex;

  std::unique_ptr<BinaryByteStream> HashValueStream;

  const TpiStreamHeader *Header;

  uint32_t Idx;

};

} // namespace pdb

}

#endif