AsyncDisplayKit/Base/ASBaseDefines.h at master · devSC/AsyncDisplayKit · GitHub

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* This source code is licensed under the BSD-style license found in the

* LICENSE file in the root directory of this source tree. An additional grant

* of patent rights can be found in the PATENTS file in the same directory.

#pragma once

// The C++ compiler mangles C function names. extern "C" { /* your C functions */ } prevents this.

// You should wrap all C function prototypes declared in headers with ASDISPLAYNODE_EXTERN_C_BEGIN/END, even if

// they are included only from .m (Objective-C) files. It's common for .m files to start using C++

// features and become .mm (Objective-C++) files. Always wrapping the prototypes with

// ASDISPLAYNODE_EXTERN_C_BEGIN/END will save someone a headache once they need to do this. You do not need to

// wrap constants, only C functions. See StackOverflow for more details:

// http://stackoverflow.com/questions/1041866/in-c-source-what-is-the-effect-of-extern-c

#ifdef __cplusplus

# define ASDISPLAYNODE_EXTERN_C_BEGIN extern "C" {

# define ASDISPLAYNODE_EXTERN_C_END }

#else

# define ASDISPLAYNODE_EXTERN_C_BEGIN

# define ASDISPLAYNODE_EXTERN_C_END

#endif

#ifdef __GNUC__

# define ASDISPLAYNODE_GNUC(major, minor) \

(__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))

#else

# define ASDISPLAYNODE_GNUC(major, minor) 0

#endif

#ifndef ASDISPLAYNODE_INLINE

# if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L

# define ASDISPLAYNODE_INLINE static inline

# elif defined (__MWERKS__) || defined (__cplusplus)

# define ASDISPLAYNODE_INLINE static inline

# elif ASDISPLAYNODE_GNUC (3, 0)

# define ASDISPLAYNODE_INLINE static __inline__ __attribute__ ((always_inline))

# else

# define ASDISPLAYNODE_INLINE static

# endif

#endif

#ifndef ASDISPLAYNODE_HIDDEN

# if ASDISPLAYNODE_GNUC (4,0)

# define ASDISPLAYNODE_HIDDEN __attribute__ ((visibility ("hidden")))

# else

# define ASDISPLAYNODE_HIDDEN /* no hidden */

# endif

#endif

#ifndef ASDISPLAYNODE_PURE

# if ASDISPLAYNODE_GNUC (3, 0)

# define ASDISPLAYNODE_PURE __attribute__ ((pure))

# else

# define ASDISPLAYNODE_PURE /* no pure */

# endif

#endif

#ifndef ASDISPLAYNODE_WARN_UNUSED

# if ASDISPLAYNODE_GNUC (3, 4)

# define ASDISPLAYNODE_WARN_UNUSED __attribute__ ((warn_unused_result))

# else

# define ASDISPLAYNODE_WARN_UNUSED /* no warn_unused */

# endif

#endif

#ifndef ASDISPLAYNODE_WARN_DEPRECATED

# define ASDISPLAYNODE_WARN_DEPRECATED 1

#endif

#ifndef ASDISPLAYNODE_DEPRECATED

# if ASDISPLAYNODE_GNUC (3, 0) && ASDISPLAYNODE_WARN_DEPRECATED

# define ASDISPLAYNODE_DEPRECATED __attribute__ ((deprecated))

# else

# define ASDISPLAYNODE_DEPRECATED

# endif

#endif

#if defined (__cplusplus) && defined (__GNUC__)

# define ASDISPLAYNODE_NOTHROW __attribute__ ((nothrow))

#else

# define ASDISPLAYNODE_NOTHROW

#endif

#define ARRAY_COUNT(x) sizeof(x) / sizeof(x[0])

#ifndef __has_feature // Optional.

#define __has_feature(x) 0 // Compatibility with non-clang compilers.

#endif

#ifndef __has_attribute // Optional.

#define __has_attribute(x) 0 // Compatibility with non-clang compilers.

#endif

#ifndef NS_CONSUMED

#if __has_feature(attribute_ns_consumed)

#define NS_CONSUMED __attribute__((ns_consumed))

#else

#define NS_CONSUMED

#endif

#ifndef NS_RETURNS_RETAINED

#if __has_feature(attribute_ns_returns_retained)

#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))

#else

#define NS_RETURNS_RETAINED

#endif

#ifndef CF_RETURNS_RETAINED

#if __has_feature(attribute_cf_returns_retained)

#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))

#else

#define CF_RETURNS_RETAINED

#endif

#ifndef ASDISPLAYNODE_NOT_DESIGNATED_INITIALIZER

#define ASDISPLAYNODE_NOT_DESIGNATED_INITIALIZER() \

do { \

NSAssert2(NO, @"%@ is not the designated initializer for instances of %@.", NSStringFromSelector(_cmd), NSStringFromClass([self class])); \

return nil; \

} while (0)

#endif // ASDISPLAYNODE_NOT_DESIGNATED_INITIALIZER

// It's hard to pass quoted strings via xcodebuild preprocessor define arguments, so we'll convert

// the preprocessor values to strings here.

// It takes two steps to do this in gcc as per

// http://gcc.gnu.org/onlinedocs/cpp/Stringification.html

#define ASDISPLAYNODE_TO_STRING(str) #str

#define ASDISPLAYNODE_TO_UNICODE_STRING(str) @ASDISPLAYNODE_TO_STRING(str)

#ifndef ASDISPLAYNODE_REQUIRES_SUPER

#if __has_attribute(objc_requires_super)

#define ASDISPLAYNODE_REQUIRES_SUPER __attribute__((objc_requires_super))

#else

#define ASDISPLAYNODE_REQUIRES_SUPER

#endif

AsyncDisplayKit/Base/ASBaseDefines.h at master · devSC/AsyncDisplayKit · GitHub

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