ladybird/Libraries/LibJS/Runtime/Intl/DateTimeFormatFunction.cpp
Shannon Booth 9b79a686eb LibJS+LibWeb: Use realm.create<T> instead of heap.allocate<T>
The main motivation behind this is to remove JS specifics of the Realm
from the implementation of the Heap.

As a side effect of this change, this is a bit nicer to read than the
previous approach, and in my opinion, also makes it a little more clear
that this method is specific to a JavaScript Realm.
2024-11-13 16:51:44 -05:00

74 lines
2.3 KiB
C++

/*
* Copyright (c) 2021-2022, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Date.h>
#include <LibJS/Runtime/DateConstructor.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/DateTimeFormat.h>
#include <LibJS/Runtime/Intl/DateTimeFormatFunction.h>
#include <LibJS/Runtime/ValueInlines.h>
namespace JS::Intl {
JS_DEFINE_ALLOCATOR(DateTimeFormatFunction);
// 11.5.4 DateTime Format Functions, https://tc39.es/ecma402/#sec-datetime-format-functions
NonnullGCPtr<DateTimeFormatFunction> DateTimeFormatFunction::create(Realm& realm, DateTimeFormat& date_time_format)
{
return realm.create<DateTimeFormatFunction>(date_time_format, realm.intrinsics().function_prototype());
}
DateTimeFormatFunction::DateTimeFormatFunction(DateTimeFormat& date_time_format, Object& prototype)
: NativeFunction(prototype)
, m_date_time_format(date_time_format)
{
}
void DateTimeFormatFunction::initialize(Realm& realm)
{
auto& vm = this->vm();
Base::initialize(realm);
define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
define_direct_property(vm.names.name, PrimitiveString::create(vm, String {}), Attribute::Configurable);
}
ThrowCompletionOr<Value> DateTimeFormatFunction::call()
{
auto& vm = this->vm();
auto& realm = *vm.current_realm();
auto date = vm.argument(0);
// 1. Let dtf be F.[[DateTimeFormat]].
// 2. Assert: Type(dtf) is Object and dtf has an [[InitializedDateTimeFormat]] internal slot.
double date_value;
// 3. If date is not provided or is undefined, then
if (date.is_undefined()) {
// a. Let x be ! Call(%Date.now%, undefined).
date_value = MUST(JS::call(vm, *realm.intrinsics().date_constructor_now_function(), js_undefined())).as_double();
}
// 4. Else,
else {
// a. Let x be ? ToNumber(date).
date_value = TRY(date.to_number(vm)).as_double();
}
// 5. Return ? FormatDateTime(dtf, x).
auto formatted = TRY(format_date_time(vm, m_date_time_format, date_value));
return PrimitiveString::create(vm, move(formatted));
}
void DateTimeFormatFunction::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_date_time_format);
}
}