I'm trying to solve "the typedef problem" in Close. Specifically, a
variable declaration may include a "typedef" as part of the type
specifier. But I need to know what's a typedef, and what's not a
typedef, because the only rule for typedef is that it's a valid name.
So I want some kind of rule like:
token typedef_name {
<identifier> {*}
}
and then:
method typedef_name($/) {
if is_a_typedef(~$<identifier>) {
make get_typedef_past(~$<identifier>);
}
else {
FAIL_SOMEHOW();
}
}
But I don't know how to fail. Is there an "official right way" to do
this? Is there a "working way"? I could set a variable, and then check
it in a predicate PIR closure, but ugh.
=Austin
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