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pre-allocate h_desugar's result to squelch recursive calls

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Sven M. Hallberg 2013-06-14 12:27:35 +02:00
parent 8618f9cb62
commit 7b04ab8d9d
3 changed files with 10 additions and 3 deletions
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4
src/desugar.c
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@ -8,9 +8,11 @@ HCFChoice *h_desugar(HAllocator *mm__, HCFStack *stk__, const HParser *parser) {
if (nstk__ == NULL) {
nstk__ = h_cfstack_new(mm__);
}
if(nstk__->prealloc == NULL)
nstk__->prealloc = h_new(HCFChoice, 1);
// we're going to do something naughty and cast away the const to memoize
((HParser *)parser)->desugared = nstk__->prealloc;
parser->vtable->desugar(mm__, nstk__, parser->env);
((HParser *)parser)->desugared = nstk__->last_completed;
if (stk__ == NULL)
h_cfstack_free(mm__, nstk__);
} else if (stk__ != NULL) {