TpiStream.h

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//===- TpiStream.cpp - PDB Type Info (TPI) Stream 2 Access ------*- 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_TPISTREAM_H
#define LLVM_DEBUGINFO_PDB_NATIVE_TPISTREAM_H
 
#include "llvm/DebugInfo/CodeView/CVRecord.h"
#include "llvm/DebugInfo/PDB/Native/HashTable.h"
#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
#include "llvm/Support/BinaryStreamArray.h"
#include "llvm/Support/BinaryStreamRef.h"
 
#include "llvm/Support/Error.h"
 
namespace llvm {
class BinaryStream;
namespace codeview {
class TypeIndex;
struct TypeIndexOffset;
class LazyRandomTypeCollection;
}
namespace msf {
class MappedBlockStream;
}
namespace pdb {
struct TpiStreamHeader;
class PDBFile;
 
class TpiStream {
  friend class TpiStreamBuilder;
 
public:
  TpiStream(PDBFile &File, std::unique_ptr<msf::MappedBlockStream> Stream);
  ~TpiStream();
  Error reload();
 
  PdbRaw_TpiVer getTpiVersion() const;
 
  uint32_t TypeIndexBegin() const;
  uint32_t TypeIndexEnd() const;
  uint32_t getNumTypeRecords() const;
  uint16_t getTypeHashStreamIndex() const;
  uint16_t getTypeHashStreamAuxIndex() const;
 
  uint32_t getHashKeySize() const;
  uint32_t getNumHashBuckets() const;
  FixedStreamArray<support::ulittle32_t> getHashValues() const;
  FixedStreamArray<codeview::TypeIndexOffset> getTypeIndexOffsets() const;
  HashTable<support::ulittle32_t> &getHashAdjusters();
 
  codeview::CVTypeRange types(bool *HadError) const;
  const codeview::CVTypeArray &typeArray() const { return TypeRecords; }
 
  codeview::LazyRandomTypeCollection &typeCollection() { return *Types; }
 
  Expected<codeview::TypeIndex>
  findFullDeclForForwardRef(codeview::TypeIndex ForwardRefTI) const;
 
  std::vector<codeview::TypeIndex> findRecordsByName(StringRef Name) const;
 
  codeview::CVType getType(codeview::TypeIndex Index);
 
  BinarySubstreamRef getTypeRecordsSubstream() const;
 
  Error commit();
 
  void buildHashMap();
 
  bool supportsTypeLookup() const;
 
private:
  PDBFile &Pdb;
  std::unique_ptr<msf::MappedBlockStream> Stream;
 
  std::unique_ptr<codeview::LazyRandomTypeCollection> Types;
 
  BinarySubstreamRef TypeRecordsSubstream;
 
  codeview::CVTypeArray TypeRecords;
 
  std::unique_ptr<BinaryStream> HashStream;
  FixedStreamArray<support::ulittle32_t> HashValues;
  FixedStreamArray<codeview::TypeIndexOffset> TypeIndexOffsets;
  HashTable<support::ulittle32_t> HashAdjusters;
 
  std::vector<std::vector<codeview::TypeIndex>> HashMap;
 
  const TpiStreamHeader *Header;
};
}
}
 
#endif