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(ARRAY_CARDINALITY): Define.

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(ARGMATCH_ASSERT): New macro.
This commit is contained in:
Jim Meyering
1999-01-25 14:52:13 +00:00
parent a2e1454d4b
commit 89826ef420
1 changed files with 11 additions and 0 deletions
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11
lib/argmatch.h
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@@ -35,6 +35,17 @@
# endif /* GCC. */
# endif /* Not PARAMS. */
/* Assert there are as many real arguments as there are values
(argument list ends with a NULL guard). There is no execution
cost, since it will be statically evalauted to `assert (0)' or
`assert (1)'. Unfortunately there is no -Wassert-0. */
# undef ARRAY_CARDINALITY
# define ARRAY_CARDINALITY(Array) (sizeof ((Array)) / sizeof (*(Array)))
# define ARGMATCH_ASSERT(Arglist, Vallist) \
assert (ARRAY_CARDINALITY ((Arglist)) == ARRAY_CARDINALITY ((Vallist)) + 1)
/* Return the index of the element of ARGLIST (NULL terminated) that
matches with ARG. If VALLIST is not NULL, then use it to resolve
false ambiguities (i.e., different matches of ARG but corresponding