Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Runtime/Intl/DateTimeFormatFunction.cpp

@@ -0,0 +1,74 @@
+/*
+ * 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.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, 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);
+}
+
+}