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

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