MIRROR: javascript for 🐜's, a tiny runtime with big ambitions
clean up proto ctor
+34
-15
+34
-15
src/ant.c
+34
-15
src/ant.c
···
9986
9986
return js_mkundef();
9987
9987
}
9988
9988
9989
+
static inline bool is_same_heap_value(ant_value_t a, ant_value_t b) {
9990
+
return vtype(a) == vtype(b) && vdata(a) == vdata(b);
9991
+
}
9992
+
9993
+
static inline bool is_constructor_value(ant_value_t value) {
9994
+
return vtype(value) == T_FUNC || vtype(value) == T_CFUNC;
9995
+
}
9996
+
9997
+
static void promise_init_derived_promise(
9998
+
ant_t *js,
9999
+
ant_value_t next_p,
10000
+
ant_value_t parent_p,
10001
+
ant_value_t species_ctor,
10002
+
ant_value_t promise_ctor
10003
+
) {
10004
+
ant_value_t next_obj = js_as_obj(next_p);
10005
+
10006
+
if (is_constructor_value(species_ctor) && !is_same_heap_value(species_ctor, promise_ctor)) {
10007
+
ant_value_t species_proto = js_get(js, species_ctor, "prototype");
10008
+
if (is_object_type(species_proto)) js_set_proto_init(next_obj, species_proto);
10009
+
set_slot(next_obj, SLOT_CTOR, species_ctor);
10010
+
return;
10011
+
}
10012
+
10013
+
ant_value_t parent_obj = js_as_obj(parent_p);
10014
+
ant_value_t parent_proto = get_slot(parent_obj, SLOT_PROTO);
10015
+
if (vtype(parent_proto) == T_OBJ) js_set_proto_init(next_obj, parent_proto);
10016
+
10017
+
ant_value_t parent_ctor = get_slot(parent_obj, SLOT_CTOR);
10018
+
if (is_constructor_value(parent_ctor)) set_slot(next_obj, SLOT_CTOR, parent_ctor);
10019
+
}
10020
+
9989
10021
static ant_value_t builtin_promise_then(ant_t *js, ant_value_t *args, int nargs) {
9990
10022
ant_value_t p = js->this_val;
9991
10023
if (vtype(p) != T_PROMISE) return js_mkerr(js, "not a promise");
···
10026
10058
10027
10059
ant_value_t nextP = js_mkpromise(js);
10028
10060
GC_ROOT_PIN(js, nextP);
10029
-
if ((vtype(species_ctor) == T_FUNC || vtype(species_ctor) == T_CFUNC)
10030
-
&& !(vtype(species_ctor) == vtype(promise_ctor)
10031
-
&& vdata(species_ctor) == vdata(promise_ctor))) {
10032
-
ant_value_t species_proto = js_get(js, species_ctor, "prototype");
10033
-
if (is_object_type(species_proto))
10034
-
js_set_proto_init(js_as_obj(nextP), species_proto);
10035
-
set_slot(js_as_obj(nextP), SLOT_CTOR, species_ctor);
10036
-
} else {
10037
-
ant_value_t p_proto = get_slot(js_as_obj(p), SLOT_PROTO);
10038
-
if (vtype(p_proto) == T_OBJ) {
10039
-
js_set_proto_init(js_as_obj(nextP), p_proto);
10040
-
ant_value_t p_ctor = get_slot(js_as_obj(p), SLOT_CTOR);
10041
-
if (vtype(p_ctor) == T_FUNC) set_slot(js_as_obj(nextP), SLOT_CTOR, p_ctor);
10042
-
}
10043
-
}
10061
+
promise_init_derived_promise(js, nextP, p, species_ctor, promise_ctor);
10044
10062
10045
10063
ant_value_t onFulfilled = nargs > 0 ? args[0] : js_mkundef();
10046
10064
ant_value_t onRejected = nargs > 1 ? args[1] : js_mkundef();
10065
+
10047
10066
GC_ROOT_PIN(js, onFulfilled);
10048
10067
GC_ROOT_PIN(js, onRejected);
10049
10068