MIRROR: javascript for 🐜's, a tiny runtime with big ambitions
prototype
+138
-8
+1
-1
meson.build
+1
-1
meson.build
···
74
74
build_date = run_command('date', '+%Y-%m-%d', check: true).stdout().strip()
75
75
76
76
version_conf = configuration_data()
77
-
version_conf.set('ANT_VERSION', '0.1.0.5')
77
+
version_conf.set('ANT_VERSION', '0.1.0.6')
78
78
version_conf.set('ANT_GIT_HASH', git_hash)
79
79
version_conf.set('ANT_BUILD_DATE', build_date)
80
80
+121
-7
src/ant.c
+121
-7
src/ant.c
···
1131
1131
jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next));
1132
1132
jsoff_t klen = offtolen(loadoff(js, koff));
1133
1133
const char *key = (char *) &js->mem[koff + sizeof(koff)];
1134
-
if (!streq(key, klen, "__proto__", 9) && !streq(key, klen, "@@toStringTag", 13) && !streq(key, klen, "__getter", 8)) {
1134
+
1135
+
bool is_desc = (klen > 7 && key[0] == '_' && key[1] == '_' && key[2] == 'd' && key[3] == 'e' && key[4] == 's' && key[5] == 'c' && key[6] == '_');
1136
+
bool should_hide = streq(key, klen, "__proto__", 9) || streq(key, klen, "@@toStringTag", 13) || streq(key, klen, "__getter", 8) || is_desc;
1137
+
1138
+
if (!should_hide) {
1139
+
char desc_key[128];
1140
+
snprintf(desc_key, sizeof(desc_key), "__desc_%.*s", (int)klen, key);
1141
+
jsoff_t desc_off = lkp(js, obj, desc_key, strlen(desc_key));
1142
+
if (desc_off != 0) {
1143
+
jsval_t desc_obj = resolveprop(js, mkval(T_PROP, desc_off));
1144
+
if (vtype(desc_obj) == T_OBJ) {
1145
+
jsoff_t enumerable_off = lkp(js, desc_obj, "enumerable", 10);
1146
+
if (enumerable_off != 0) {
1147
+
jsval_t enumerable_val = resolveprop(js, mkval(T_PROP, enumerable_off));
1148
+
if (!js_truthy(js, enumerable_val)) should_hide = true;
1149
+
}
1150
+
}
1151
+
}
1152
+
}
1153
+
1154
+
if (!should_hide) {
1135
1155
jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff)));
1136
1156
if (!first) n += cpy(buf + n, len - n, ",\n", 2);
1137
1157
first = false;
···
2024
2044
invalidate_obj_cache(head);
2025
2045
2026
2046
return mkentity(js, (b & ~(3U | CONSTMASK)) | T_PROP, buf, sizeof(buf));
2047
+
}
2048
+
2049
+
static jsval_t setup_func_prototype(struct js *js, jsval_t func) {
2050
+
jsval_t proto_obj = mkobj(js, 0);
2051
+
if (is_err(proto_obj)) return proto_obj;
2052
+
2053
+
jsval_t object_proto = get_ctor_proto(js, "Object", 6);
2054
+
if (vtype(object_proto) == T_OBJ) {
2055
+
set_proto(js, proto_obj, object_proto);
2056
+
}
2057
+
2058
+
jsval_t constructor_key = js_mkstr(js, "constructor", 11);
2059
+
if (is_err(constructor_key)) return constructor_key;
2060
+
2061
+
jsval_t res = mkprop(js, proto_obj, constructor_key, func, false);
2062
+
if (is_err(res)) return res;
2063
+
2064
+
jsval_t desc_key_str = js_mkstr(js, "__desc_constructor", 18);
2065
+
if (is_err(desc_key_str)) return desc_key_str;
2066
+
2067
+
jsval_t desc_obj = js_mkobj(js);
2068
+
if (is_err(desc_obj)) return desc_obj;
2069
+
2070
+
setprop(js, desc_obj, js_mkstr(js, "writable", 8), js_mktrue());
2071
+
setprop(js, desc_obj, js_mkstr(js, "enumerable", 10), js_mkfalse());
2072
+
setprop(js, desc_obj, js_mkstr(js, "configurable", 12), js_mktrue());
2073
+
setprop(js, proto_obj, desc_key_str, desc_obj);
2074
+
2075
+
jsval_t prototype_key = js_mkstr(js, "prototype", 9);
2076
+
if (is_err(prototype_key)) return prototype_key;
2077
+
2078
+
res = setprop(js, func, prototype_key, proto_obj);
2079
+
if (is_err(res)) return res;
2080
+
2081
+
return js_mkundef();
2027
2082
}
2028
2083
2029
2084
jsval_t js_setprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v) {
···
4603
4658
if (is_err(res4)) return res4;
4604
4659
}
4605
4660
4606
-
return mkval(T_FUNC, (unsigned long) vdata(func_obj));
4661
+
jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj));
4662
+
4663
+
jsval_t proto_setup = setup_func_prototype(js, func);
4664
+
if (is_err(proto_setup)) return proto_setup;
4665
+
4666
+
return func;
4607
4667
}
4608
4668
4609
4669
#define RTL_BINOP(_f1, _f2, _cond) \
···
5622
5682
if (is_err(res4)) return res4;
5623
5683
}
5624
5684
jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj));
5685
+
5686
+
jsval_t proto_setup = setup_func_prototype(js, func);
5687
+
if (is_err(proto_setup)) return proto_setup;
5688
+
5625
5689
if (exe) {
5626
5690
if (lkp(js, js->scope, name, nlen) > 0)
5627
5691
return js_mkerr(js, "'%.*s' already declared", (int) nlen, name);
···
5680
5744
if (is_err(res4)) return res4;
5681
5745
}
5682
5746
jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj));
5747
+
5748
+
jsval_t proto_setup = setup_func_prototype(js, func);
5749
+
if (is_err(proto_setup)) return proto_setup;
5750
+
5683
5751
if (exe) {
5684
5752
if (lkp(js, js->scope, name, nlen) > 0)
5685
5753
return js_mkerr(js, "'%.*s' already declared", (int) nlen, name);
···
5845
5913
jsoff_t klen = offtolen(loadoff(js, koff));
5846
5914
const char *key = (char *) &js->mem[koff + sizeof(koff)];
5847
5915
5848
-
if (!streq(key, klen, "__proto__", 9)) {
5916
+
bool should_skip = streq(key, klen, "__proto__", 9);
5917
+
5918
+
if (!should_skip && klen > 7 && key[0] == '_' && key[1] == '_' &&
5919
+
key[2] == 'd' && key[3] == 'e' && key[4] == 's' && key[5] == 'c' && key[6] == '_') {
5920
+
should_skip = true;
5921
+
}
5922
+
5923
+
if (!should_skip) {
5924
+
char desc_key[128];
5925
+
snprintf(desc_key, sizeof(desc_key), "__desc_%.*s", (int)klen, key);
5926
+
jsoff_t desc_off = lkp(js, iter_obj, desc_key, strlen(desc_key));
5927
+
if (desc_off != 0) {
5928
+
jsval_t desc_obj = resolveprop(js, mkval(T_PROP, desc_off));
5929
+
if (vtype(desc_obj) == T_OBJ) {
5930
+
jsoff_t enumerable_off = lkp(js, desc_obj, "enumerable", 10);
5931
+
if (enumerable_off != 0) {
5932
+
jsval_t enumerable_val = resolveprop(js, mkval(T_PROP, enumerable_off));
5933
+
if (!js_truthy(js, enumerable_val)) {
5934
+
should_skip = true;
5935
+
}
5936
+
}
5937
+
}
5938
+
}
5939
+
}
5940
+
5941
+
if (!should_skip) {
5849
5942
jsval_t key_str = js_mkstr(js, key, klen);
5850
5943
5851
5944
const char *var_name = &js->code[var_name_off];
···
7422
7515
res = setprop(js, func_obj, scope_key, js_glob(js));
7423
7516
if (is_err(res)) return res;
7424
7517
7425
-
return mkval(T_FUNC, (unsigned long) vdata(func_obj));
7518
+
jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj));
7519
+
7520
+
jsval_t proto_setup = setup_func_prototype(js, func);
7521
+
if (is_err(proto_setup)) return proto_setup;
7522
+
7523
+
return func;
7426
7524
}
7427
7525
7428
7526
size_t total_len = 1;
···
7490
7588
res = setprop(js, func_obj, scope_key, js_glob(js));
7491
7589
if (is_err(res)) return res;
7492
7590
7493
-
return mkval(T_FUNC, (unsigned long) vdata(func_obj));
7591
+
jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj));
7592
+
7593
+
jsval_t proto_setup = setup_func_prototype(js, func);
7594
+
if (is_err(proto_setup)) return proto_setup;
7595
+
7596
+
return func;
7494
7597
}
7495
7598
7496
7599
static jsval_t builtin_function_call(struct js *js, jsval_t *args, int nargs) {
···
7587
7690
setprop(js, bound_func, js_mkstr(js, "__native_func", 13), func);
7588
7691
setprop(js, bound_func, js_mkstr(js, "__this", 6), this_arg);
7589
7692
7590
-
return mkval(T_FUNC, (unsigned long) vdata(bound_func));
7693
+
jsval_t bound = mkval(T_FUNC, (unsigned long) vdata(bound_func));
7694
+
7695
+
jsval_t proto_setup = setup_func_prototype(js, bound);
7696
+
if (is_err(proto_setup)) return proto_setup;
7697
+
7698
+
return bound;
7591
7699
}
7592
7700
7593
7701
jsval_t func_obj = mkval(T_OBJ, vdata(func));
···
7613
7721
}
7614
7722
7615
7723
setprop(js, bound_func, js_mkstr(js, "__this", 6), this_arg);
7616
-
return mkval(T_FUNC, (unsigned long) vdata(bound_func));
7724
+
7725
+
jsval_t bound = mkval(T_FUNC, (unsigned long) vdata(bound_func));
7726
+
7727
+
jsval_t proto_setup = setup_func_prototype(js, bound);
7728
+
if (is_err(proto_setup)) return proto_setup;
7729
+
7730
+
return bound;
7617
7731
}
7618
7732
7619
7733
static jsval_t builtin_Array(struct js *js, jsval_t *args, int nargs) {
+16
tests/proto.js
+16
tests/proto.js
···
1
+
function Person(first, last) {
2
+
this.firstName = first;
3
+
this.lastName = last;
4
+
}
5
+
6
+
Person.prototype.fullName = function () {
7
+
return this.firstName + ' ' + this.lastName;
8
+
};
9
+
10
+
const person1 = new Person('John', 'Doe');
11
+
const person2 = new Person('Jane', 'Smith');
12
+
13
+
console.log(person1.fullName());
14
+
console.log(person2.fullName());
15
+
16
+
console.log(Person.prototype);