Implement Array.prototype.at (#13)
This commit is contained in:
parent
55018345ed
commit
99eb81e1a6
2 changed files with 34 additions and 1 deletions
33
quickjs.c
33
quickjs.c
|
@ -38412,6 +38412,38 @@ static int JS_isConcatSpreadable(JSContext *ctx, JSValueConst obj)
|
|||
return JS_IsArray(ctx, obj);
|
||||
}
|
||||
|
||||
static JSValue js_array_at(JSContext *ctx, JSValueConst this_val,
|
||||
int argc, JSValueConst *argv)
|
||||
{
|
||||
JSValue obj, ret;
|
||||
int64_t len, idx;
|
||||
JSValue *arrp;
|
||||
uint32_t count;
|
||||
|
||||
ret = JS_EXCEPTION;
|
||||
obj = JS_ToObject(ctx, this_val);
|
||||
if (js_get_length64(ctx, &len, obj))
|
||||
goto exception;
|
||||
|
||||
if (JS_ToInt64Sat(ctx, &idx, argv[0]))
|
||||
goto exception;
|
||||
|
||||
if (idx < 0)
|
||||
idx = len + idx;
|
||||
|
||||
if (idx < 0 || idx >= len) {
|
||||
ret = JS_UNDEFINED;
|
||||
} else if (js_get_fast_array(ctx, obj, &arrp, &count) && count == len) {
|
||||
ret = JS_DupValue(ctx, arrp[idx]);
|
||||
} else if (!JS_TryGetPropertyInt64(ctx, obj, idx, &ret)) {
|
||||
ret = JS_UNDEFINED;
|
||||
}
|
||||
|
||||
exception:
|
||||
JS_FreeValue(ctx, obj);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static JSValue js_array_concat(JSContext *ctx, JSValueConst this_val,
|
||||
int argc, JSValueConst *argv)
|
||||
{
|
||||
|
@ -39773,6 +39805,7 @@ static const JSCFunctionListEntry js_iterator_proto_funcs[] = {
|
|||
};
|
||||
|
||||
static const JSCFunctionListEntry js_array_proto_funcs[] = {
|
||||
JS_CFUNC_DEF("at", 1, js_array_at ),
|
||||
JS_CFUNC_DEF("concat", 1, js_array_concat ),
|
||||
JS_CFUNC_MAGIC_DEF("every", 1, js_array_every, special_every ),
|
||||
JS_CFUNC_MAGIC_DEF("some", 1, js_array_every, special_some ),
|
||||
|
|
|
@ -58,7 +58,7 @@ arbitrary-module-namespace-names=skip
|
|||
array-find-from-last=skip
|
||||
array-grouping=skip
|
||||
Array.fromAsync=skip
|
||||
Array.prototype.at=skip
|
||||
Array.prototype.at
|
||||
Array.prototype.flat
|
||||
Array.prototype.flatMap
|
||||
Array.prototype.flatten
|
||||
|
|
Loading…
Reference in a new issue