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#include <lcq/pit/runtime/value/nativedata.h>
bool pit_value_is_nativedata(pit_runtime *rt, pit_value a) {
return pit_value_is_ref_heavy_sort(rt, a, PIT_VALUE_HEAVY_SORT_NATIVEDATA);
}
pit_value pit_value_nativedata_new(pit_runtime *rt, pit_value tag, void *d) {
pit_value ret = pit_value_ref_heavy_new(rt);
pit_value_heavy *h = pit_value_ref_deref(rt, pit_value_as_ref(rt, ret));
if (!h) { pit_error(rt, "failed to create new heavy value for nativedata"); return PIT_NIL; }
h->hsort = PIT_VALUE_HEAVY_SORT_NATIVEDATA;
h->in.nativedata.tag = tag;
h->in.nativedata.data = d;
return ret;
}
void *pit_value_nativedata_get(pit_runtime *rt, pit_value tag, pit_value v) {
pit_value_heavy *h = NULL;
if (pit_value_sort(v) != PIT_VALUE_SORT_REF) {
pit_error(rt, "value was not a reference");
return NULL;
}
h = pit_value_ref_deref(rt, pit_value_as_ref(rt, v));
if (!h) { pit_error(rt, "bad ref"); return NULL; }
if (h->hsort != PIT_VALUE_HEAVY_SORT_NATIVEDATA) {
pit_error(rt, "invalid use of value as nativedata");
return NULL;
}
if (!pit_value_eq(h->in.nativedata.tag, tag)) {
pit_error(rt, "native value does not match tag");
return NULL;
}
if (!h->in.nativedata.data) {
pit_error(rt, "nativedata was already freed");
return NULL;
}
return h->in.nativedata.data;
}
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