/**
 * @file attributes.h
 *
 * Macros for attributes on functions, variables, etc.
 */
#pragma once

#ifdef __has_attribute
#define DVL_HAVE_ATTRIBUTE(x) __has_attribute(x)
#else
#define DVL_HAVE_ATTRIBUTE(x) 0
#endif

#if DVL_HAVE_ATTRIBUTE(format) || (defined(__GNUC__) && !defined(__clang__))
#define DVL_PRINTF_ATTRIBUTE(fmtargnum, firstarg) \
	__attribute__((__format__(__printf__, fmtargnum, firstarg)))
#else
#define DVL_PRINTF_ATTRIBUTE(fmtargnum, firstarg)
#endif

#if DVL_HAVE_ATTRIBUTE(always_inline)
#define DVL_ALWAYS_INLINE inline __attribute__((always_inline))
#elif defined(_MSC_VER)
#define DVL_ALWAYS_INLINE __forceinline
#else
#define DVL_ALWAYS_INLINE inline
#endif

#if DVL_HAVE_ATTRIBUTE(hot)
#define DVL_ATTRIBUTE_HOT __attribute__((hot))
#else
#define DVL_ATTRIBUTE_HOT
#endif

// Any global data used by tests must be marked with `DVL_API_FOR_TEST`.
#if defined(_MSC_VER) && defined(BUILD_TESTING)
#ifdef _DVL_EXPORTING
#define DVL_API_FOR_TEST __declspec(dllexport)
#else
#define DVL_API_FOR_TEST __declspec(dllimport)
#endif
#else
#define DVL_API_FOR_TEST
#endif

#if defined(__clang__)
#define DVL_REINITIALIZES [[clang::reinitializes]]
#elif DVL_HAVE_ATTRIBUTE(reinitializes)
#define DVL_REINITIALIZES __attribute__((reinitializes))
#else
#define DVL_REINITIALIZES
#endif

#if ((defined(__GNUC__) || defined(__clang__)) && !defined(__EXCEPTIONS)) || defined(_MSC_VER) && !_HAS_EXCEPTIONS
#define DVL_EXCEPTIONS 0
#else
#define DVL_EXCEPTIONS 1
#endif