lib/DebugInfo/PDB/Native/SymbolStream.cpp

   1 //===- SymbolStream.cpp - PDB Symbol Stream Access ------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/DebugInfo/PDB/Native/SymbolStream.h"
  10
  11 #include "llvm/DebugInfo/CodeView/CodeView.h"
  12 #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
  13 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
  14 #include "llvm/Support/BinaryStreamReader.h"
  15 #include "llvm/Support/Endian.h"
  16
  17 using namespace llvm;
  18 using namespace llvm::msf;
  19 using namespace llvm::support;
  20 using namespace llvm::pdb;
  21
  22 SymbolStream::SymbolStream(std::unique_ptr<MappedBlockStream> Stream)
  23     : Stream(std::move(Stream)) {}
  24
  25 SymbolStream::~SymbolStream() {}
  26
  27 Error SymbolStream::reload() {
  28   BinaryStreamReader Reader(*Stream);
  29
  30   if (auto EC = Reader.readArray(SymbolRecords, Stream->getLength()))
  31     return EC;
  32
  33   return Error::success();
  34 }
  35
  36 iterator_range<codeview::CVSymbolArray::Iterator>
  37 SymbolStream::getSymbols(bool *HadError) const {
  38   return llvm::make_range(SymbolRecords.begin(HadError), SymbolRecords.end());
  39 }
  40
  41 Error SymbolStream::commit() { return Error::success(); }
  42
  43 codeview::CVSymbol SymbolStream::readRecord(uint32_t Offset) const {
  44   return *SymbolRecords.at(Offset);
  45 }