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LibJS: Add Array.prototype.keys()

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davidot 2021-06-12 14:43:58 +02:00 • committed by Linus Groh
parent dc65f54c06
commit e044a3e428
3 changed files with 56 additions and 0 deletions
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11
Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
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@ -62,6 +62,7 @@ void ArrayPrototype::initialize(GlobalObject& global_object)
define_native_function(vm.names.values, values, 0, attr);
define_native_function(vm.names.flat, flat, 0, attr);
define_native_function(vm.names.at, at, 1, attr);
define_native_function(vm.names.keys, keys, 0, attr);
// Use define_property here instead of define_native_function so that
// Object.is(Array.prototype[Symbol.iterator], Array.prototype.values)
@ -1033,6 +1034,16 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::values)
return ArrayIterator::create(global_object, this_object, Object::PropertyKind::Value);
}
// 23.1.3.16 Array.prototype.keys ( ), https://tc39.es/ecma262/#sec-array.prototype.keys
JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::keys)
{
auto* this_object = vm.this_value(global_object).to_object(global_object);
if (!this_object)
return {};
return ArrayIterator::create(global_object, this_object, Object::PropertyKind::Key);
}
static void recursive_array_flat(VM& vm, GlobalObject& global_object, Array& new_array, Object& array, double depth)
{
auto array_length = length_of_array_like(global_object, array);

1
Userland/Libraries/LibJS/Runtime/ArrayPrototype.h
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@ -48,6 +48,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(values);
JS_DECLARE_NATIVE_FUNCTION(flat);
JS_DECLARE_NATIVE_FUNCTION(at);
JS_DECLARE_NATIVE_FUNCTION(keys);
};
}