Provide DIA implementation of DebugInfoPDB.

This implements DebugInfoPDB when the DIA SDK is present on the system.
Specifically, this means that the following conditions are met:
  1) You are building on Windows.
  2) You are building with MSVC.
  3) Visual Studio did not corrupt the installation of DIA due to a
     known issue with side-by-side installations of VS2012 and VS2013.
If all of these conditions are true, you will be able to pass a value
of PDB_Reader::DIA to PDB::createPdbReader().

There are no tests for this yet, as any test will be in the form of a
lit test which tests the llvm-pdbdump.exe, which still needs to be
rewritten in terms of this library.

llvm-svn: 228747

1 files changed, 67 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp
new file mode 100644
index 00000000000..0a9c444f5e6
--- /dev/null
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp
@@ -0,0 +1,67 @@
+//===- DIASourceFile.cpp - DIA implementation of IPDBSourceFile -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/DIA/DIAEnumSymbols.h"
+#include "llvm/DebugInfo/PDB/DIA/DIASession.h"
+#include "llvm/DebugInfo/PDB/DIA/DIASourceFile.h"
+#include "llvm/Support/ConvertUTF.h"
+
+using namespace llvm;
+
+DIASourceFile::DIASourceFile(const DIASession &PDBSession,
+                             CComPtr<IDiaSourceFile> DiaSourceFile)
+    : Session(PDBSession), SourceFile(DiaSourceFile) {}
+
+std::string DIASourceFile::getFileName() const {
+  CComBSTR FileName16;
+  HRESULT Result = SourceFile->get_fileName(&FileName16);
+  if (S_OK != Result)
+    return std::string();
+
+  std::string FileName8;
+  llvm::ArrayRef<char> FileNameBytes(reinterpret_cast<char *>(FileName16.m_str),
+                                     FileName16.ByteLength());
+  llvm::convertUTF16ToUTF8String(FileNameBytes, FileName8);
+  return FileName8;
+}
+
+uint32_t DIASourceFile::getUniqueId() const {
+  DWORD Id;
+  return (S_OK == SourceFile->get_uniqueId(&Id)) ? Id : 0;
+}
+
+std::string DIASourceFile::getChecksum() const {
+  DWORD ByteSize = 0;
+  HRESULT Result = SourceFile->get_checksum(0, &ByteSize, nullptr);
+  if (ByteSize == 0)
+    return std::string();
+  std::vector<BYTE> ChecksumBytes(ByteSize);
+  Result = SourceFile->get_checksum(ByteSize, &ByteSize, &ChecksumBytes[0]);
+  if (S_OK != Result)
+    return std::string();
+  return std::string(ChecksumBytes.begin(), ChecksumBytes.end());
+}
+
+PDB_Checksum DIASourceFile::getChecksumType() const {
+  DWORD Type;
+  HRESULT Result = SourceFile->get_checksumType(&Type);
+  if (S_OK != Result)
+    return PDB_Checksum::None;
+  return static_cast<PDB_Checksum>(Type);
+}
+
+std::unique_ptr<IPDBEnumSymbols> DIASourceFile::getCompilands() const {
+  CComPtr<IDiaEnumSymbols> DiaEnumerator;
+  HRESULT Result = SourceFile->get_compilands(&DiaEnumerator);
+  if (S_OK != Result)
+    return nullptr;
+
+  return std::unique_ptr<IPDBEnumSymbols>(
+      new DIAEnumSymbols(Session, DiaEnumerator));
+}