ContinuationRecordBuilder.h

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//===- ContinuationRecordBuilder.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
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_DEBUGINFO_CODEVIEW_CONTINUATIONRECORDBUILDER_H
#define LLVM_DEBUGINFO_CODEVIEW_CONTINUATIONRECORDBUILDER_H
 
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/DebugInfo/CodeView/CVRecord.h"
#include "llvm/DebugInfo/CodeView/TypeRecordMapping.h"
#include "llvm/Support/BinaryByteStream.h"
#include "llvm/Support/BinaryStreamWriter.h"
#include "llvm/Support/Compiler.h"
#include <cstdint>
#include <vector>
 
namespace llvm {
namespace codeview {
class TypeIndex;
enum class ContinuationRecordKind { FieldList, MethodOverloadList };
 
class ContinuationRecordBuilder {
  SmallVector<uint32_t, 4> SegmentOffsets;
  std::optional<ContinuationRecordKind> Kind;
  AppendingBinaryByteStream Buffer;
  BinaryStreamWriter SegmentWriter;
  TypeRecordMapping Mapping;
  ArrayRef<uint8_t> InjectedSegmentBytes;
 
  uint32_t getCurrentSegmentLength() const;
 
  void insertSegmentEnd(uint32_t Offset);
  CVType createSegmentRecord(uint32_t OffBegin, uint32_t OffEnd,
                             std::optional<TypeIndex> RefersTo);
 
public:
  LLVM_ABI ContinuationRecordBuilder();
  LLVM_ABI ~ContinuationRecordBuilder();
 
  LLVM_ABI void begin(ContinuationRecordKind RecordKind);
 
  // This template is explicitly instantiated in the implementation file for all
  // supported types.  The method itself is ugly, so inlining it into the header
  // file clutters an otherwise straightforward interface.
  template <typename RecordType> void writeMemberType(RecordType &Record);
 
  LLVM_ABI std::vector<CVType> end(TypeIndex Index);
};
} // namespace codeview
} // namespace llvm
 
#endif