include/llvm/Support/CBindingWrapping.h

   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