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
47