LLVM  10.0.0svn
DIAUtils.h
Go to the documentation of this file.
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"
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
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:32
std::string invokeBstrMethod(Obj &Object, HRESULT(__stdcall Obj::*Func)(BSTR *))
Definition: DIAUtils.h:16
bool convertUTF16ToUTF8String(ArrayRef< char > SrcBytes, std::string &Out)
Converts a stream of raw bytes assumed to be UTF16 into a UTF8 std::string.