From 8269921212875b75c918bde5d318f0c5de152dac Mon Sep 17 00:00:00 2001
From: Linus Groh <mail@linusgroh.de>
Date: Tue, 6 Jul 2021 19:14:47 +0100
Subject: [PATCH] LibJS: Add the Temporal namespace object :^)

Currently empty, but we gotta start somewhere! This is the start of
implementing the Temporal proposal (currently stage 3).

I have decided to start a new subdirectory (Runtime/Temporal/) as well
as a new C++ namespace (JS::Temporal) for this so we don't have to
prefix all the files and classes with "Temporal" - there will be a lot.

https://tc39.es/proposal-temporal/
---
 Userland/Libraries/LibJS/CMakeLists.txt       |  1 +
 .../LibJS/Runtime/CommonPropertyNames.h       |  1 +
 .../Libraries/LibJS/Runtime/GlobalObject.cpp  |  2 ++
 .../LibJS/Runtime/Temporal/Temporal.cpp       | 23 +++++++++++++++++++
 .../LibJS/Runtime/Temporal/Temporal.h         | 22 ++++++++++++++++++
 5 files changed, 49 insertions(+)
 create mode 100644 Userland/Libraries/LibJS/Runtime/Temporal/Temporal.cpp
 create mode 100644 Userland/Libraries/LibJS/Runtime/Temporal/Temporal.h

diff --git a/Userland/Libraries/LibJS/CMakeLists.txt b/Userland/Libraries/LibJS/CMakeLists.txt
index 78f363405a..23dbc4d8bb 100644
--- a/Userland/Libraries/LibJS/CMakeLists.txt
+++ b/Userland/Libraries/LibJS/CMakeLists.txt
@@ -121,6 +121,7 @@ set(SOURCES
     Runtime/SymbolConstructor.cpp
     Runtime/SymbolObject.cpp
     Runtime/SymbolPrototype.cpp
+    Runtime/Temporal/Temporal.cpp
     Runtime/TypedArray.cpp
     Runtime/TypedArrayConstructor.cpp
     Runtime/TypedArrayPrototype.cpp
diff --git a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
index da8e9fcfa4..b792d0a5e4 100644
--- a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
+++ b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
@@ -46,6 +46,7 @@ namespace JS {
     P(SQRT2)                                 \
     P(String)                                \
     P(Symbol)                                \
+    P(Temporal)                              \
     P(UTC)                                   \
     P(abs)                                   \
     P(acos)                                  \
diff --git a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
index 557be0be08..75db91487a 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
@@ -67,6 +67,7 @@
 #include <LibJS/Runtime/StringPrototype.h>
 #include <LibJS/Runtime/SymbolConstructor.h>
 #include <LibJS/Runtime/SymbolPrototype.h>
+#include <LibJS/Runtime/Temporal/Temporal.h>
 #include <LibJS/Runtime/TypedArray.h>
 #include <LibJS/Runtime/TypedArrayConstructor.h>
 #include <LibJS/Runtime/TypedArrayPrototype.h>
@@ -170,6 +171,7 @@ void GlobalObject::initialize_global_object()
     define_direct_property(vm.names.Math, heap().allocate<MathObject>(*this, *this), attr);
     define_direct_property(vm.names.JSON, heap().allocate<JSONObject>(*this, *this), attr);
     define_direct_property(vm.names.Reflect, heap().allocate<ReflectObject>(*this, *this), attr);
+    define_direct_property(vm.names.Temporal, heap().allocate<Temporal::Temporal>(*this, *this), attr);
 
     // This must be initialized before allocating AggregateErrorConstructor, which uses ErrorConstructor as its prototype.
     initialize_constructor(vm.names.Error, m_error_constructor, m_error_prototype);
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Temporal.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Temporal.cpp
new file mode 100644
index 0000000000..99a285c848
--- /dev/null
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Temporal.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/Temporal/Temporal.h>
+
+namespace JS::Temporal {
+
+// 1 The Temporal Object, https://tc39.es/proposal-temporal/#sec-temporal-objects
+Temporal::Temporal(GlobalObject& global_object)
+    : Object(*global_object.object_prototype())
+{
+}
+
+void Temporal::initialize(GlobalObject& global_object)
+{
+    Object::initialize(global_object);
+}
+
+}
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Temporal.h b/Userland/Libraries/LibJS/Runtime/Temporal/Temporal.h
new file mode 100644
index 0000000000..f2f34f2d32
--- /dev/null
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Temporal.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibJS/Runtime/Object.h>
+
+namespace JS::Temporal {
+
+class Temporal final : public Object {
+    JS_OBJECT(Temporal, Object);
+
+public:
+    explicit Temporal(GlobalObject&);
+    virtual void initialize(GlobalObject&) override;
+    virtual ~Temporal() override = default;
+};
+
+}