cuex/tuple.h: Support Functions for Variable Length Tuples
[cuex: Expressions]

Functions
cu_bool_t	cuex_opr_is_tuple (cuex_meta_t opr)
cu_bool_t	cuex_is_tuple (cuex_t e)
cu_rank_t	cuex_tuple_r (cuex_t e)
cuex_t	cuex_tuple_sub (cuex_t tuple, cu_rank_t begin, cu_rank_t end)
cuex_t	cuex_tuple_sub_carg (cuex_t carg, cuex_t tuple, cu_rank_t begin, cu_rank_t end)
cuex_t	cuex_tuple_append (cuex_t tuple0, cuex_t tuple1)

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Detailed Description

These are helper functions for expressions of CUEX_OR_TUPLE. It's safe to process the operations directly, and things that are easy to do with the generic expression functionality is intentionally left out.

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Function Documentation

cu_bool_t cuex_is_tuple

(

cuex_t

e

)

True iff e is a variable-length tuple.

cuex_t cuex_tuple_append	(	cuex_t	tuple0,
		cuex_t	tuple1
	)

Returns the tuple formed by appending tuple0 and tuple1.

cu_rank_t cuex_tuple_r

(

cuex_t

e

)

The arity of e. Same as the operator arity.

cuex_t cuex_tuple_sub	(	cuex_t	tuple,
		cu_rank_t	begin,
		cu_rank_t	end
	)

Returns the sub-tuple from position begin inclusive to position end exclusive.

cuex_t cuex_tuple_sub_carg	(	cuex_t	carg,
		cuex_t	tuple,
		cu_rank_t	begin,
		cu_rank_t	end
	)

A variant of cuex_tuple_sub which prepends carg to the result tuple. The size of the tuple will be end - begin.