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9814296d1c
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@29485 72102866-910b-0410-8b05-ffd578937521
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
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/* Define the has_feature pseudo-macro for GCC. */
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#ifndef __has_feature
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#define __has_feature(x) 0
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#endif
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#if __has_feature(blocks)
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/**
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* Defines a block type. Will work whether or not the compiler natively
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* supports blocks.
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*/
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#define DEFINE_BLOCK_TYPE(name, retTy, argTys, ...) \
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typedef retTy(^name)(argTys, ## __VA_ARGS__)
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/**
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* Calls a block. Works irrespective of whether the compiler supports blocks.
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*/
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#define CALL_BLOCK(block, args, ...) \
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block(args, ## __VA_ARGS__)
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/* Fall-back versions for when the compiler doesn't have native blocks support.
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*/
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#else
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#if (GCC_VERSION >= 3000)
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#define DEFINE_BLOCK_TYPE(name, retTy, argTys, ...) \
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typedef struct {\
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void *isa;\
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int flags;\
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int reserved;\
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retTy (*invoke)(void*, argTys, ## __VA_ARGS__);\
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} *name
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#define CALL_BLOCK(block, args, ...) \
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block->invoke(block, args, ## __VA_ARGS__)
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#else /* GCC_VERSION >= 3000 */
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#define DEFINE_BLOCK_TYPE(name, retTy, argTys, args...) \
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typedef struct {\
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void *isa;\
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int flags;\
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int reserved;\
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retTy (*invoke)(void*, argTys, args);\
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} *name
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#define CALL_BLOCK(block, args...) \
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block->invoke(block, args)
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#endif /* GCC_VERSION >= 3000 */
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#endif
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