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/*
* 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>
namespace JS::Intl {
// 11.5.5 DateTime Format Functions, https://tc39.es/ecma402/#sec-datetime-format-functions
DateTimeFormatFunction* DateTimeFormatFunction::create(Realm& realm, DateTimeFormat& date_time_format)
{
return realm.heap().allocate<DateTimeFormatFunction>(realm, 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, js_string(vm, String::empty()), 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 js_string(vm, move(formatted));
}
void DateTimeFormatFunction::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(&m_date_time_format);
}
}
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