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Implemented a bunch more desugaring

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This commit is contained in:
Dan Hirsch 2013-02-20 18:58:15 -05:00
parent 5ae267f3ed
commit 101e90ad9b
11 changed files with 51 additions and 35 deletions
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19
src/parsers/attr_bool.c
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@ -22,13 +22,30 @@ static bool ab_isValidRegular(void *env) {
return ab->p->vtable->isValidRegular(ab->p->env);
}
/* Strictly speaking, this does not adhere to the definition of context-free.
However, for the purpose of making it easier to handle weird constraints on
fields, we've decided to allow boolean attribute validation at parse time
for now. We might change our minds later. */
static bool ab_isValidCF(void *env) {
HAttrBool *ab = (HAttrBool*)env;
return ab->p->vtable->isValidCF(ab->p->env);
}
static HCFChoice* desugar_ab(HAllocator *mm__, void *env) {
HAttrBool *a = (HAttrBool*)env;
HCFSequence *seq = h_new(HCFSequence, 1);
seq->items = h_new(HCFChoice*, 2);
seq->items[0] = a->p->vtable->desugar(mm__, a->p->env);
seq->items[1] = NULL;
HCFChoice *ret = h_new(HCFChoice, 1);
ret->type = HCF_CHOICE;
ret->seq = h_new(HCFSequence*, 2);
ret->seq[0] = seq;
ret->seq[1] = NULL;
/* TODO: need to process this as an HPredicate */
ret->action = a->action;
return ret;
}
static const HParserVtable attr_bool_vt = {