xref: /freebsd/contrib/llvm-project/llvm/include/llvm/DebugInfo/PDB/DIA/DIAUtils.h (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a)
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
31