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237 lines
7.1 KiB
C
Executable File
237 lines
7.1 KiB
C
Executable File
//
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// ASBaseDefines.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// The C++ compiler mangles C function names. extern "C" { /* your C functions */ } prevents this.
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// You should wrap all C function prototypes declared in headers with ASDISPLAYNODE_EXTERN_C_BEGIN/END, even if
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// they are included only from .m (Objective-C) files. It's common for .m files to start using C++
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// features and become .mm (Objective-C++) files. Always wrapping the prototypes with
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// ASDISPLAYNODE_EXTERN_C_BEGIN/END will save someone a headache once they need to do this. You do not need to
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// wrap constants, only C functions. See StackOverflow for more details:
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// http://stackoverflow.com/questions/1041866/in-c-source-what-is-the-effect-of-extern-c
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#ifdef __cplusplus
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# define ASDISPLAYNODE_EXTERN_C_BEGIN extern "C" {
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# define ASDISPLAYNODE_EXTERN_C_END }
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#else
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# define ASDISPLAYNODE_EXTERN_C_BEGIN
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# define ASDISPLAYNODE_EXTERN_C_END
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#endif
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#ifdef __GNUC__
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# define ASDISPLAYNODE_GNUC(major, minor) \
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(__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
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#else
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# define ASDISPLAYNODE_GNUC(major, minor) 0
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#endif
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#ifndef ASDISPLAYNODE_INLINE
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# if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
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# define ASDISPLAYNODE_INLINE static inline
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# elif defined (__MWERKS__) || defined (__cplusplus)
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# define ASDISPLAYNODE_INLINE static inline
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# elif ASDISPLAYNODE_GNUC (3, 0)
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# define ASDISPLAYNODE_INLINE static __inline__ __attribute__ ((always_inline))
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# else
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# define ASDISPLAYNODE_INLINE static
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# endif
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#endif
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#ifndef ASDISPLAYNODE_WARN_DEPRECATED
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# define ASDISPLAYNODE_WARN_DEPRECATED 1
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#endif
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#ifndef ASDISPLAYNODE_DEPRECATED
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# if ASDISPLAYNODE_GNUC (3, 0) && ASDISPLAYNODE_WARN_DEPRECATED
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# define ASDISPLAYNODE_DEPRECATED __attribute__ ((deprecated))
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# else
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# define ASDISPLAYNODE_DEPRECATED
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# endif
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#endif
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#ifndef ASDISPLAYNODE_DEPRECATED_MSG
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# if ASDISPLAYNODE_GNUC (3, 0) && ASDISPLAYNODE_WARN_DEPRECATED
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# define ASDISPLAYNODE_DEPRECATED_MSG(msg) __deprecated_msg(msg)
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# else
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# define ASDISPLAYNODE_DEPRECATED_MSG(msg)
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# endif
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#endif
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#ifndef AS_ENABLE_TIPS
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#define AS_ENABLE_TIPS 0
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#endif
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/**
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* The event backtraces take a static 2KB of memory
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* and retain all objects present in all the registers
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* of the stack frames. The memory consumption impact
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* is too significant even to be enabled during general
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* development.
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*/
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#ifndef AS_SAVE_EVENT_BACKTRACES
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# define AS_SAVE_EVENT_BACKTRACES 0
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#endif
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#ifndef __has_feature // Optional.
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#define __has_feature(x) 0 // Compatibility with non-clang compilers.
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#endif
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#ifndef __has_attribute // Optional.
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#define __has_attribute(x) 0 // Compatibility with non-clang compilers.
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#endif
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#ifndef NS_RETURNS_RETAINED
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#if __has_feature(attribute_ns_returns_retained)
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#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
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#else
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#define NS_RETURNS_RETAINED
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#endif
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#endif
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#ifndef CF_RETURNS_RETAINED
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#if __has_feature(attribute_cf_returns_retained)
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#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
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#else
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#define CF_RETURNS_RETAINED
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#endif
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#endif
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#ifndef ASDISPLAYNODE_REQUIRES_SUPER
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#if __has_attribute(objc_requires_super)
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#define ASDISPLAYNODE_REQUIRES_SUPER __attribute__((objc_requires_super))
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#else
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#define ASDISPLAYNODE_REQUIRES_SUPER
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#endif
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#endif
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#ifndef AS_UNAVAILABLE
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#if __has_attribute(unavailable)
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#define AS_UNAVAILABLE(message) __attribute__((unavailable(message)))
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#else
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#define AS_UNAVAILABLE(message)
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#endif
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#endif
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#ifndef AS_WARN_UNUSED_RESULT
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#if __has_attribute(warn_unused_result)
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#define AS_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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#else
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#define AS_WARN_UNUSED_RESULT
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#endif
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#endif
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#define ASOVERLOADABLE __attribute__((overloadable))
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#if __has_attribute(noescape)
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#define AS_NOESCAPE __attribute__((noescape))
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#else
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#define AS_NOESCAPE
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#endif
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#if __has_attribute(objc_subclassing_restricted)
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#define AS_SUBCLASSING_RESTRICTED __attribute__((objc_subclassing_restricted))
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#else
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#define AS_SUBCLASSING_RESTRICTED
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#endif
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#define ASCreateOnce(expr) ({ \
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static dispatch_once_t onceToken; \
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static __typeof__(expr) staticVar; \
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dispatch_once(&onceToken, ^{ \
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staticVar = expr; \
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}); \
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staticVar; \
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})
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/// Ensure that class is of certain kind
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#define ASDynamicCast(x, c) ({ \
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id __val = x;\
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((c *) ([__val isKindOfClass:[c class]] ? __val : nil));\
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})
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/// Ensure that class is of certain kind, assuming it is subclass restricted
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#define ASDynamicCastStrict(x, c) ({ \
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id __val = x;\
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((c *) ([__val class] == [c class] ? __val : nil));\
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})
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// Compare two primitives, assign if different. Returns whether the assignment happened.
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#define ASCompareAssign(lvalue, newValue) ({ \
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BOOL result = (lvalue != newValue); \
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if (result) { lvalue = newValue; } \
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result; \
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})
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#define ASCompareAssignObjects(lvalue, newValue) \
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ASCompareAssignCustom(lvalue, newValue, ASObjectIsEqual)
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// e.g. ASCompareAssignCustom(_myInsets, insets, UIEdgeInsetsEqualToEdgeInsets)
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#define ASCompareAssignCustom(lvalue, newValue, isequal) ({ \
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BOOL result = !(isequal(lvalue, newValue)); \
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if (result) { lvalue = newValue; } \
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result; \
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})
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#define ASCompareAssignCopy(lvalue, newValue) ({ \
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BOOL result = !ASObjectIsEqual(lvalue, newValue); \
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if (result) { lvalue = [newValue copyWithZone:NULL]; } \
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result; \
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})
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/**
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* Create a new set by mapping `collection` over `work`, ignoring nil.
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*/
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#define ASSetByFlatMapping(collection, decl, work) ({ \
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NSMutableSet *s = [[NSMutableSet alloc] init]; \
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for (decl in collection) {\
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id result = work; \
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if (result != nil) { \
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[s addObject:result]; \
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} \
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} \
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s; \
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})
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/**
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* Create a new ObjectPointerPersonality NSHashTable by mapping `collection` over `work`, ignoring nil.
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*
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* capacity: 0 is taken from +hashTableWithOptions.
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*/
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#define ASPointerTableByFlatMapping(collection, decl, work) ({ \
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NSHashTable *t = [[NSHashTable alloc] initWithOptions:NSHashTableObjectPointerPersonality capacity:0]; \
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for (decl in collection) {\
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id result = work; \
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if (result != nil) { \
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[t addObject:result]; \
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} \
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} \
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t; \
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})
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/**
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* Create a new array by mapping `collection` over `work`, ignoring nil.
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*/
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#define ASArrayByFlatMapping(collection, decl, work) ({ \
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NSMutableArray *a = [[NSMutableArray alloc] init]; \
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for (decl in collection) {\
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id result = work; \
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if (result != nil) { \
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[a addObject:result]; \
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} \
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} \
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a; \
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})
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