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1 //===- llvm/Support/CBindingWrapph.h - C Interface Wrapping -----*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file declares the wrapping macros for the C interface.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_SUPPORT_CBINDINGWRAPPING_H
15 #define LLVM_SUPPORT_CBINDINGWRAPPING_H
16 
17 #include "llvm/Support/Casting.h"
18 #include "llvm-c/Types.h"
19 
20 #define DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref)     \
21   inline ty *unwrap(ref P) {                            \
22     return reinterpret_cast<ty*>(P);                    \
23   }                                                     \
24                                                         \
25   inline ref wrap(const ty *P) {                        \
26     return reinterpret_cast<ref>(const_cast<ty*>(P));   \
27   }
28 
29 #define DEFINE_ISA_CONVERSION_FUNCTIONS(ty, ref)        \
30   DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref)           \
31                                                         \
32   template<typename T>                                  \
33   inline T *unwrap(ref P) {                             \
34     return cast<T>(unwrap(P));                          \
35   }
36 
37 #define DEFINE_STDCXX_CONVERSION_FUNCTIONS(ty, ref)     \
38   DEFINE_SIMPLE_CONVERSION_FUNCTIONS(ty, ref)           \
39                                                         \
40   template<typename T>                                  \
41   inline T *unwrap(ref P) {                             \
42     T *Q = (T*)unwrap(P);                               \
43     assert(Q && "Invalid cast!");                       \
44     return Q;                                           \
45   }
46 
47 #endif
48