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LibJS: Add %TypedArray%.prototype.values

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Luke 2021-06-26 01:00:57 +01:00 committed by Linus Groh
parent fb43b778ab
commit a6324481e1
Notes: sideshowbarker 2024-07-18 11:29:17 +09:00 
Author: https://github.com/Lubrsi
Commit: https://github.com/SerenityOS/serenity/commit/a6324481e15
Pull-request: https://github.com/SerenityOS/serenity/pull/8253
3 changed files with 57 additions and 0 deletions
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10
Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
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@ -35,6 +35,7 @@ void TypedArrayPrototype::initialize(GlobalObject& object)
define_native_function(vm.names.some, some, 1, attr);
define_native_function(vm.names.join, join, 1, attr);
define_native_function(vm.names.keys, keys, 0, attr);
define_native_function(vm.names.values, values, 0, attr);
define_native_accessor(*vm.well_known_symbol_to_string_tag(), to_string_tag_getter, nullptr, Attribute::Configurable);
@ -249,6 +250,15 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::keys)
return ArrayIterator::create(global_object, typed_array, Object::PropertyKind::Key);
}
// 23.2.3.30 %TypedArray%.prototype.values ( ), https://tc39.es/ecma262/#sec-%typedarray%.prototype.values
JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::values)
{
auto typed_array = typed_array_from(vm, global_object);
if (!typed_array)
return {};
return ArrayIterator::create(global_object, typed_array, Object::PropertyKind::Value);
}
// 23.2.3.1 get %TypedArray%.prototype.buffer, https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.buffer
JS_DEFINE_NATIVE_GETTER(TypedArrayPrototype::buffer_getter)
{

1
Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.h
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@ -33,6 +33,7 @@ private:
JS_DECLARE_NATIVE_FUNCTION(some);
JS_DECLARE_NATIVE_FUNCTION(join);
JS_DECLARE_NATIVE_FUNCTION(keys);
JS_DECLARE_NATIVE_FUNCTION(values);
};
}

46
Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.values.js Normal file
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@ -0,0 +1,46 @@
const TYPED_ARRAYS = [
Uint8Array,
Uint16Array,
Uint32Array,
Int8Array,
Int16Array,
Int32Array,
Float32Array,
Float64Array,
];
const BIGINT_TYPED_ARRAYS = [BigUint64Array, BigInt64Array];
test("length is 0", () => {
TYPED_ARRAYS.forEach(T => {
expect(T.prototype.values).toHaveLength(0);
});
BIGINT_TYPED_ARRAYS.forEach(T => {
expect(T.prototype.values).toHaveLength(0);
});
});
test("basic functionality", () => {
TYPED_ARRAYS.forEach(T => {
const a = new T([30, 40, 50]);
const it = a.values();
expect(it.next()).toEqual({ value: 30, done: false });
expect(it.next()).toEqual({ value: 40, done: false });
expect(it.next()).toEqual({ value: 50, done: false });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
});
BIGINT_TYPED_ARRAYS.forEach(T => {
const a = new T([30n, 40n, 50n]);
const it = a.values();
expect(it.next()).toEqual({ value: 30n, done: false });
expect(it.next()).toEqual({ value: 40n, done: false });
expect(it.next()).toEqual({ value: 50n, done: false });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
});
});