ObjFW  Diff

 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "objfw-defs.h"

#ifndef __STDC_LIMIT_MACROS
# define __STDC_LIMIT_MACROS
#endif
#ifndef __STDC_CONSTANT_MACROS
# define __STDC_CONSTANT_MACROS
#endif

#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef OF_OBJFW_RUNTIME
# import "runtime.h"
#endif
#ifdef OF_APPLE_RUNTIME
# import <objc/objc.h>
# import <objc/runtime.h>
# import <objc/message.h>
#endif

#if defined(__GNUC__)
# define restrict __restrict__
#elif __STDC_VERSION__ < 199901L
# define restrict
#endif

#if __STDC_VERSION__ >= 201112L
# ifdef OF_HAVE_STDNORETURN_H
#  include <stdnoreturn.h>
# else
#  define noreturn _Noreturn
# endif
#elif defined(__GNUC__)
# define noreturn __attribute__((__noreturn__))
#else
# define noreturn
#endif

/*
 * Work around Apple's libc headers breaking by defining noreturn.
 * They use __attribute__((noreturn)) where they should be using
 * __attribute__((__noreturn__)).
 */
#if defined(__APPLE__) && defined(__dead2)
# undef __dead2
# define __dead2 __attribute__((__noreturn__))
#endif

#if __STDC_VERSION__ >= 201112L && !defined(static_assert)
/* C11 compiler, but old libc */
# define static_assert _Static_assert
#endif

#if defined(OF_HAVE__THREAD_LOCAL)
# define OF_HAVE_COMPILER_TLS
# ifdef OF_HAVE_THREADS_H
#  include <threads.h>
# else
#  define thread_local _Thread_local
# endif
#elif defined(OF_HAVE___THREAD)
# define OF_HAVE_COMPILER_TLS
# define thread_local __thread
#endif

#ifdef __GNUC__
# define OF_INLINE inline __attribute__((__always_inline__))
# define OF_LIKELY(cond) (__builtin_expect(!!(cond), 1))
# define OF_UNLIKELY(cond) (__builtin_expect(!!(cond), 0))
# define OF_CONST_FUNC __attribute__((__const__))

# ifdef __BIGGEST_ALIGNMENT__
#  define OF_BIGGEST_ALIGNMENT __BIGGEST_ALIGNMENT__
# else
#  /* Hopefully no arch needs more than 16 byte alignment */
#  define OF_BIGGEST_ALIGNMENT 16
# endif
#endif

#ifdef __GNUC__
# define __GCC_VERSION__ (__GNUC__ * 100 + __GNUC_MINOR__)
#else
# define __GCC_VERSION__ 0
#endif

#if defined(__clang__) || __GCC_VERSION__ >= 406 || defined(OBJC_NEW_PROPERTIES)
# define OF_HAVE_PROPERTIES
# define OF_HAVE_OPTIONAL_PROTOCOLS
# if defined(__clang__) || __GCC_VERSION__ >= 406 || defined(OF_APPLE_RUNTIME)
#  define OF_HAVE_FAST_ENUMERATION
# endif
# define OF_HAVE_CLASS_EXTENSIONS
# define OF_PRIVATE_CATEGORY
#else
# define OF_PRIVATE_CATEGORY Private
#endif

#ifndef __has_feature
# define __has_feature(x) 0
#endif

#ifndef __has_attribute
# define __has_attribute(x) 0
#endif

#if !__has_feature(objc_instancetype)
# define instancetype id
#endif

#if __has_feature(blocks)
# define OF_HAVE_BLOCKS
#endif

#if __has_feature(objc_bool)
# undef YES
# define YES __objc_yes
# undef NO
# define NO __objc_no
# ifndef __cplusplus
#  undef true
#  define true ((bool)1)
#  undef false
#  define false ((bool)0)
# endif
#endif

#if defined(__clang__) || __GCC_VERSION__ >= 405
# define OF_UNREACHABLE __builtin_unreachable();
#else
# define OF_UNREACHABLE abort();
#endif

#if defined(__clang__) || __GCC_VERSION__ >= 406
# define OF_SENTINEL __attribute__((__sentinel__))
# define OF_METHOD_NORETURN __attribute__((__noreturn__))
#else
# define OF_SENTINEL
# define OF_METHOD_NORETURN
#endif

#if __has_attribute(__objc_requires_super__)
# define OF_REQUIRES_SUPER __attribute__((__objc_requires_super__))
#else
# define OF_REQUIRES_SUPER
#endif

#if __has_attribute(__objc_root_class__)
# define OF_ROOT_CLASS __attribute__((__objc_root_class__))
#else
# define OF_ROOT_CLASS
#endif

#ifdef __GNUC__
# if defined(__x86_64__) || defined(__amd64__)
#  define OF_X86_64_ASM
# elif defined(__i386__)
#  define OF_X86_ASM
# elif defined(__ppc__) || defined(__PPC__)

#   define OF_ARMV6_ASM
#  endif
# elif defined(__arm64__) || defined(__aarch64__)
#  define OF_ARM64_ASM
# endif
#endif

#ifdef OF_APPLE_RUNTIME
# if defined(__x86_64__) || defined(__i386__) || defined(__ARM64_ARCH_8__) || \
	defined(__arm__) || defined(__ppc__)
#  define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR
#  define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET
# endif
#else
# if defined(__ELF__)
#  if defined(__x86_64__) || defined(__amd64__) || defined(__i386__) || \
	defined(__arm__) || defined(__ARM__) || defined(__ppc__) || \
	defined(__PPC__)
#   define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR
#   if __OBJFW_RUNTIME_ABI__ >= 800
#    define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET
#   endif
#  endif
#  if (defined(_MIPS_SIM) && _MIPS_SIM == _ABIO32) || \
	(defined(__mips_eabi) && _MIPS_SZPTR == 32)
#   define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR
#   if __OBJFW_RUNTIME_ABI__ >= 800
#    define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET
#   endif
#  endif
# elif defined(_WIN32)
#  if defined(__x86_64__) || defined(__i386__)
#   define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR
#   if __OBJFW_RUNTIME_ABI__ >= 800
#    define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET
#   endif
#  endif
# endif


#endif

#if __has_feature(objc_arc)
# define OF_RETURNS_RETAINED __attribute__((__ns_returns_retained__))
# define OF_RETURNS_NOT_RETAINED __attribute__((__ns_returns_not_retained__))
# define OF_RETURNS_INNER_POINTER \
	__attribute__((__objc_returns_inner_pointer__))
# define OF_CONSUMED __attribute__((__ns_consumed__))
# define OF_WEAK_UNAVAILABLE __attribute__((__objc_arc_weak_unavailable__))
#else
# define OF_RETURNS_RETAINED
# define OF_RETURNS_NOT_RETAINED
# define OF_RETURNS_INNER_POINTER
# define OF_CONSUMED

# define OF_WEAK_UNAVAILABLE
# define __unsafe_unretained
# define __bridge
# define __autoreleasing
#endif

#define OF_RETAIN_COUNT_MAX UINT_MAX
#define OF_NOT_FOUND SIZE_MAX

#if !defined(_WIN32) && !defined(__DJGPP__)
# define OF_PATH_DELIMITER '/'
# define OF_PATH_DELIMITER_STRING @"/"
# define OF_IS_PATH_DELIMITER(c) (c == '/')
#else
# define OF_PATH_DELIMITER '\\'
# define OF_PATH_DELIMITER_STRING @"\\"
# define OF_IS_PATH_DELIMITER(c) (c == '\\' || c == '/')
#endif
#define OF_PATH_CURRENT_DIRECTORY @"."
#define OF_PATH_PARENT_DIRECTORY @".."

#define OF_ENSURE(cond)							\
	if (!(cond)) {							\
		fprintf(stderr, "Failed to ensure condition in "	\
		    __FILE__ ":%d:\n" #cond "\n", __LINE__);		\
		abort();						\



	}






#define OF_UNRECOGNIZED_SELECTOR		\
	[self doesNotRecognizeSelector: _cmd];	\
	OF_UNREACHABLE
#define OF_INVALID_INIT_METHOD				\
	@try {						\
		[self doesNotRecognizeSelector: _cmd];	\
	} @catch (id e) {				\
		[self release];				\
		@throw e;				\
	}						\
							\
	abort();

#ifdef __cplusplus
extern "C" {
#endif
extern id objc_getProperty(id, SEL, ptrdiff_t, BOOL);
extern void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, signed char);
#ifdef __cplusplus
}
#endif

#define OF_IVAR_OFFSET(ivar) ((intptr_t)&ivar - (intptr_t)self)
#define OF_GETTER(ivar, atomic) \
	return objc_getProperty(self, _cmd, OF_IVAR_OFFSET(ivar), atomic);
#define OF_SETTER(ivar, value, atomic, copy) \
	objc_setProperty(self, _cmd, OF_IVAR_OFFSET(ivar), value, atomic, copy);

static OF_INLINE uint16_t OF_CONST_FUNC
OF_BSWAP16_CONST(uint16_t i)
{
	return (i & UINT16_C(0xFF00)) >> 8 |
	    (i & UINT16_C(0x00FF)) << 8;
}

		uint32_t otherCopy = other;			\
		OF_HASH_ADD(hash, (otherCopy >> 24) & 0xFF);	\
		OF_HASH_ADD(hash, (otherCopy >> 16) & 0xFF);	\
		OF_HASH_ADD(hash, (otherCopy >>  8) & 0xFF);	\
		OF_HASH_ADD(hash, otherCopy & 0xFF);		\
	}




































static OF_INLINE char*
of_strdup(const char *string)
{
	char *copy;
	size_t length = strlen(string);

	if ((copy = (char*)malloc(length + 1)) == NULL)
		return NULL;

	memcpy(copy, string, length + 1);

	return copy;
}