Home | History | Annotate | Download | only in Support
      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