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_C_BINDING_WRAPPING_H
15#define LLVM_C_BINDING_WRAPPING_H
16
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