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#include <lcq/pit/runtime/value/cons.h>
bool pit_value_is_cons(pit_runtime *rt, pit_value a) {
return pit_value_is_ref_heavy_sort(rt, a, PIT_VALUE_HEAVY_SORT_CONS);
}
pit_value pit_value_cons(pit_runtime *rt, pit_value car, pit_value cdr) {
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 cons"); return PIT_NIL; }
h->hsort = PIT_VALUE_HEAVY_SORT_CONS;
h->in.cons.car = car;
h->in.cons.cdr = cdr;
return ret;
}
pit_value pit_value_cons_car(pit_runtime *rt, pit_value v) {
if (pit_value_sort(v) != PIT_VALUE_SORT_REF) return PIT_NIL;
pit_value_heavy *h = pit_value_ref_deref(rt, pit_value_as_ref(rt, v));
if (!h) { pit_error(rt, "bad ref"); return PIT_NIL; }
if (h->hsort != PIT_VALUE_HEAVY_SORT_CONS) return PIT_NIL;
return h->in.cons.car;
}
pit_value pit_value_cons_cdr(pit_runtime *rt, pit_value v) {
if (pit_value_sort(v) != PIT_VALUE_SORT_REF) return PIT_NIL;
pit_value_heavy *h = pit_value_ref_deref(rt, pit_value_as_ref(rt, v));
if (!h) { pit_error(rt, "bad ref"); return PIT_NIL; }
if (h->hsort != PIT_VALUE_HEAVY_SORT_CONS) return PIT_NIL;
return h->in.cons.cdr;
}
void pit_value_cons_setcar(pit_runtime *rt, pit_value v, pit_value x) {
if (pit_value_sort(v) != PIT_VALUE_SORT_REF) { pit_error(rt, "not a ref"); return; }
pit_ref idx = pit_value_as_ref(rt, v);
if (idx < rt->frozen_values) { pit_error(rt, "attempted to modify frozen cons"); return; }
pit_value_heavy *h = pit_value_ref_deref(rt, idx);
if (!h) { pit_error(rt, "bad ref"); return; }
if (h->hsort != PIT_VALUE_HEAVY_SORT_CONS) { pit_error(rt, "not a cons"); return; }
h->in.cons.car = x;
}
void pit_value_cons_setcdr(pit_runtime *rt, pit_value v, pit_value x) {
if (pit_value_sort(v) != PIT_VALUE_SORT_REF) { pit_error(rt, "not a ref"); return; }
pit_ref idx = pit_value_as_ref(rt, v);
if (idx < rt->frozen_values) { pit_error(rt, "attempted to modify frozen cons"); return; }
pit_value_heavy *h = pit_value_ref_deref(rt, idx);
if (!h) { pit_error(rt, "bad ref"); return; }
if (h->hsort != PIT_VALUE_HEAVY_SORT_CONS) { pit_error(rt, "not a cons"); return; }
h->in.cons.cdr = x;
}
pit_value pit_value_list(pit_runtime *rt, i64 num, ...) {
pit_value temp[64] = {0};
pit_value ret = PIT_NIL;
if (num > 64) { pit_error(rt, "failed to create list of size %d\n", num); return PIT_NIL; }
va_list elems;
va_start(elems, num);
for (i64 i = 0; i < num; ++i) {
temp[i] = va_arg(elems, pit_value);
}
va_end(elems);
for (i64 i = 0; i < num; ++i) {
ret = pit_value_cons(rt, temp[num - i - 1], ret);
}
return ret;
}
i64 pit_value_list_len(pit_runtime *rt, pit_value xs) {
i64 ret = 0;
while (xs != PIT_NIL) {
ret += 1;
xs = pit_value_cons_cdr(rt, xs);
}
return ret;
}
pit_value pit_value_list_append(pit_runtime *rt, pit_value xs, pit_value ys) {
pit_value ret = ys;
xs = pit_value_list_reverse(rt, xs);
while (xs != PIT_NIL) {
ret = pit_value_cons(rt, pit_value_cons_car(rt, xs), ret);
xs = pit_value_cons_cdr(rt, xs);
}
return ret;
}
pit_value pit_value_list_reverse(pit_runtime *rt, pit_value xs) {
pit_value ret = PIT_NIL;
while (xs != PIT_NIL) {
ret = pit_value_cons(rt, pit_value_cons_car(rt, xs), ret);
xs = pit_value_cons_cdr(rt, xs);
}
return ret;
}
pit_value pit_value_list_contains_eq(pit_runtime *rt, pit_value needle, pit_value haystack) {
while (haystack != PIT_NIL) {
if (pit_value_eq(needle, pit_value_cons_car(rt, haystack))) return PIT_T;
haystack = pit_value_cons_cdr(rt, haystack);
}
return PIT_NIL;
}
pit_value pit_value_list_contains_equal(pit_runtime *rt, pit_value needle, pit_value haystack) {
while (haystack != PIT_NIL) {
if (pit_value_equal(rt, needle, pit_value_cons_car(rt, haystack))) return PIT_T;
haystack = pit_value_cons_cdr(rt, haystack);
}
return PIT_NIL;
}
pit_value pit_value_list_plist_get(pit_runtime *rt, pit_value k, pit_value vs) {
while (vs != PIT_NIL) {
if (pit_value_eq(k, pit_value_cons_car(rt, vs))) {
return pit_value_cons_car(rt, pit_value_cons_cdr(rt, vs));
}
vs = pit_value_cons_cdr(rt, vs);
}
return PIT_NIL;
}
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