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standards compliance

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comex 2012-02-18 13:26:04 -05:00
parent 4b09859476
commit ed360a9a0d
1 changed files with 15 additions and 3 deletions
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18
lambda.h
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@ -35,9 +35,21 @@ struct _blk {
#define LAMBDA_BODY(typ, ret, args, body) \ #define LAMBDA_BODY(typ, ret, args, body) \
LAMBDA_BODY_(typ, ret, LAMBDA_UNPAREN args, body) LAMBDA_BODY_(typ, ret, LAMBDA_UNPAREN args, body)
#endif #endif
#define LAMBDA_UNPAREN(args...) (void *_lambda_ignored, ##args)
// based on http://lefteris.realintelligence.net/?p=593
#define LAMBDA_YUP() LAMBDA_NOPE
#define LAMBDA_CHECK_LAMBDA_YUP_() ,
#define LAMBDA_CHECK_LAMBDA_NOPE_()
#define LAMBDA_CHECK_LAMBDA_YUP LAMBDA_CHECK_LAMBDA_YUP_,
#define LAMBDA_CHECK_LAMBDA_NOPE LAMBDA_CHECK_LAMBDA_NOPE_,
#define LAMBDA_APPLY_FIRST_ARG(a, ...) a()
#define LAMBDA_COMMA_IF_NONEMPTY___(a...) LAMBDA_APPLY_FIRST_ARG(a)
#define LAMBDA_COMMA_IF_NONEMPTY__(a) LAMBDA_COMMA_IF_NONEMPTY___(LAMBDA_CHECK_##a)
#define LAMBDA_COMMA_IF_NONEMPTY_(a) LAMBDA_COMMA_IF_NONEMPTY__(a)
#define LAMBDA_COMMA_IF_NONEMPTY(a, ...) LAMBDA_COMMA_IF_NONEMPTY_(LAMBDA_YUP a ())
#define LAMBDA_UNPAREN(args...) (void *_lambda_ignored LAMBDA_COMMA_IF_NONEMPTY(args) args)
#define DECL_LAMBDA(name, ret, args, body) \ #define DECL_LAMBDA(name, ret, args, body) \
struct { \ struct __lambda_##name { \
ret (*func) LAMBDA_UNPAREN args; \ ret (*func) LAMBDA_UNPAREN args; \
void *arg; \ void *arg; \
} name = LAMBDA_BODY(typeof(name), ret, args, body); } name = LAMBDA_BODY(struct __lambda_##name, ret, args, body);