contrib/llvm/lib/DebugInfo/PDB/Native/SymbolStream.cpp

   1 //===- SymbolStream.cpp - PDB Symbol Stream Access ------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/DebugInfo/PDB/Native/SymbolStream.h"
  11
  12 #include "llvm/DebugInfo/CodeView/CodeView.h"
  13 #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
  14 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
  15 #include "llvm/Support/BinaryStreamReader.h"
  16 #include "llvm/Support/Endian.h"
  17
  18 using namespace llvm;
  19 using namespace llvm::msf;
  20 using namespace llvm::support;
  21 using namespace llvm::pdb;
  22
  23 SymbolStream::SymbolStream(std::unique_ptr<MappedBlockStream> Stream)
  24     : Stream(std::move(Stream)) {}
  25
  26 SymbolStream::~SymbolStream() {}
  27
  28 Error SymbolStream::reload() {
  29   BinaryStreamReader Reader(*Stream);
  30
  31   if (auto EC = Reader.readArray(SymbolRecords, Stream->getLength()))
  32     return EC;
  33
  34   return Error::success();
  35 }
  36
  37 iterator_range<codeview::CVSymbolArray::Iterator>
  38 SymbolStream::getSymbols(bool *HadError) const {
  39   return llvm::make_range(SymbolRecords.begin(HadError), SymbolRecords.end());
  40 }
  41
  42 Error SymbolStream::commit() { return Error::success(); }
  43
  44 codeview::CVSymbol SymbolStream::readRecord(uint32_t Offset) const {
  45   return *SymbolRecords.at(Offset);
  46 }