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nsc: Rename nstr_exec_val() to nstr_eval() and tighten contract

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nstr_exec_val() can produce three different error values: NSC_NOTYPE
on invalid category, invalid type with zero val_as.lng on invalid type
(this is a bug), and the wanted type with zero val_s when it can't
coerce.  None of these should ever happen.

Fix it to always produce an NSC_NOTYPE error value.  Fix up callers to
check for it.

Specify the result's type is promoted on success.  Ensure it is even
when the argument is NSC_VAL with an unpromoted type, which is
invalid.

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
This commit is contained in:
Markus Armbruster 2014-02-02 09:39:35 +01:00
parent 5a1544f925
commit 143a4e4e6f
6 changed files with 29 additions and 20 deletions
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2
src/lib/common/xdump.c
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@ -112,7 +112,7 @@ xdeval(struct valstr *val, struct xdstr *xd,
struct castr *ca, void *ptr, int idx)
{
nstr_mksymval(val, ca, idx);
return nstr_exec_val(val, xd->cnum, ptr, NSC_NOTYPE);
return nstr_eval(val, xd->cnum, ptr, NSC_NOTYPE);
}
/*