LLVM  10.0.0svn
CBindingWrapping.h
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1 //===- llvm/Support/CBindingWrapping.h - C Interface Wrapping ---*- 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 // This file declares the wrapping macros for the C interface.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_SUPPORT_CBINDINGWRAPPING_H
14 #define LLVM_SUPPORT_CBINDINGWRAPPING_H
15 
16 #include "llvm-c/Types.h"
17 #include "llvm/Support/Casting.h"
18 
19 #define DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref) \
20  inline ty *unwrap(ref P) { \
21  return reinterpret_cast<ty*>(P); \
22  } \
23  \
24  inline ref wrap(const ty *P) { \
25  return reinterpret_cast<ref>(const_cast<ty*>(P)); \
26  }
27 
28 #define DEFINE_ISA_CONVERSION_FUNCTIONS(ty, ref) \
29  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref) \
30  \
31  template<typename T> \
32  inline T *unwrap(ref P) { \
33  return cast<T>(unwrap(P)); \
34  }
35 
36 #define DEFINE_STDCXX_CONVERSION_FUNCTIONS(ty, ref) \
37  DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref) \
38  \
39  template<typename T> \
40  inline T *unwrap(ref P) { \
41  T *Q = (T*)unwrap(P); \
42  assert(Q && "Invalid cast!"); \
43  return Q; \
44  }
45 
46 #endif