contrib/llvm/include/llvm/DebugInfo/PDB/DIA/DIAUtils.h

   1 //===- DIAUtils.h - Utility functions for working with DIA ------*- C++ -*-===//
   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 #ifndef LLVM_DEBUGINFO_PDB_DIA_DIAUTILS_H
  11 #define LLVM_DEBUGINFO_PDB_DIA_DIAUTILS_H
  12
  13 #include "llvm/ADT/ArrayRef.h"
  14 #include "llvm/Support/ConvertUTF.h"
  15
  16 template <typename Obj>
  17 std::string invokeBstrMethod(Obj &Object,
  18                              HRESULT (__stdcall Obj::*Func)(BSTR *)) {
  19   CComBSTR Str16;
  20   HRESULT Result = (Object.*Func)(&Str16);
  21   if (S_OK != Result)
  22     return std::string();
  23
  24   std::string Str8;
  25   llvm::ArrayRef<char> StrBytes(reinterpret_cast<char *>(Str16.m_str),
  26                                 Str16.ByteLength());
  27   llvm::convertUTF16ToUTF8String(StrBytes, Str8);
  28   return Str8;
  29 }
  30
  31 #endif // LLVM_DEBUGINFO_PDB_DIA_DIAUTILS_H