#ifndef NEOVIM_FUNC_ATTR_H
#define NEOVIM_FUNC_ATTR_H

// gcc and clang expose their version as follows:
//
// gcc 4.7.2:
//   __GNUC__          = 4
//   __GNUC_MINOR__    = 7
//   __GNUC_PATCHLEVEL = 2
//
// clang 3.4 (claims compat with gcc 4.2.1):
//   __GNUC__          = 4
//   __GNUC_MINOR__    = 2
//   __GNUC_PATCHLEVEL = 1
//   __clang__         = 1
//   __clang_major__   = 3
//   __clang_minor__   = 4
//
// To view the default defines of these compilers, you can perform:
//
// $ gcc -E -dM - </dev/null
// $ echo | clang -dM -E -

#ifdef __GNUC__
  // place defines for all gnulikes here, for now that's gcc, clang and
  // intel.

  // place these after the argument list of the function declaration
  // (not definition), like so:
  // void myfunc(void) FUNC_ATTR_ALWAYS_INLINE;
  #define FUNC_ATTR_MALLOC __attribute__((malloc))
  #define FUNC_ATTR_ALLOC_SIZE(x) __attribute__((alloc_size(x)))
  #define FUNC_ATTR_ALLOC_SIZE_PROD(x,y) __attribute__((alloc_size(x,y)))
  #define FUNC_ATTR_ALLOC_ALIGN(x) __attribute__((alloc_align(x)))
  #define FUNC_ATTR_PURE __attribute__ ((pure))
  #define FUNC_ATTR_CONST __attribute__((const))
  #define FUNC_ATTR_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
  #define FUNC_ATTR_ALWAYS_INLINE __attribute__((always_inline))

  #ifdef __clang__
    // clang only
  #elif defined(__INTEL_COMPILER)
    // intel only
  #else
    // gcc only
  #endif
#else
  #define FUNC_ATTR_MALLOC
  #define FUNC_ATTR_ALLOC_SIZE(x)
  #define FUNC_ATTR_ALLOC_SIZE_PROD(x,y)
  #define FUNC_ATTR_ALLOC_ALIGN(x)
  #define FUNC_ATTR_PURE
  #define FUNC_ATTR_CONST
  #define FUNC_ATTR_WARN_UNUSED_RESULT
  #define FUNC_ATTR_ALWAYS_INLINE
#endif

#endif // NEOVIM_FUNC_ATTR_H