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/GeneratorFunctionConstructor.cpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
+#include <LibJS/Runtime/FunctionConstructor.h>
+#include <LibJS/Runtime/GeneratorFunctionConstructor.h>
+#include <LibJS/Runtime/GlobalObject.h>
+
+namespace JS {
+
+JS_DEFINE_ALLOCATOR(GeneratorFunctionConstructor);
+
+GeneratorFunctionConstructor::GeneratorFunctionConstructor(Realm& realm)
+    : NativeFunction(static_cast<Object&>(realm.intrinsics().function_constructor()))
+{
+}
+
+void GeneratorFunctionConstructor::initialize(Realm& realm)
+{
+    auto& vm = this->vm();
+    Base::initialize(realm);
+
+    // 27.3.2.1 GeneratorFunction.length, https://tc39.es/ecma262/#sec-generatorfunction.length
+    define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
+    // 27.3.2.2 GeneratorFunction.prototype, https://tc39.es/ecma262/#sec-generatorfunction.length
+    define_direct_property(vm.names.prototype, realm.intrinsics().generator_function_prototype(), 0);
+}
+
+// 27.3.1.1 GeneratorFunction ( p1, p2, … , pn, body ), https://tc39.es/ecma262/#sec-generatorfunction
+ThrowCompletionOr<Value> GeneratorFunctionConstructor::call()
+{
+    return TRY(construct(*this));
+}
+
+// 27.3.1.1 GeneratorFunction ( ...parameterArgs, bodyArg ), https://tc39.es/ecma262/#sec-generatorfunction
+ThrowCompletionOr<NonnullGCPtr<Object>> GeneratorFunctionConstructor::construct(FunctionObject& new_target)
+{
+    auto& vm = this->vm();
+
+    // 1. Let C be the active function object.
+    auto* constructor = vm.active_function_object();
+
+    // 2. If bodyArg is not present, set bodyArg to the empty String.
+    // NOTE: This does that, as well as the string extraction done inside of CreateDynamicFunction
+    auto extracted = TRY(extract_parameter_arguments_and_body(vm, vm.running_execution_context().arguments));
+
+    // 3. Return ? CreateDynamicFunction(C, NewTarget, generator, parameterArgs, bodyArg).
+    return TRY(FunctionConstructor::create_dynamic_function(vm, *constructor, &new_target, FunctionKind::Generator, extracted.parameters, extracted.body));
+}
+
+}