LibWeb: Add the WebAssembly.Module constructor

Author: https://github.com/alimpfard
Commit: 321db0159e
Pull-request: https://github.com/SerenityOS/serenity/pull/8358
Reviewed-by: https://github.com/IdanHo
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibWeb/WebAssembly/WebAssemblyModuleConstructor.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Heap/Heap.h>
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/TypedArray.h>
+#include <LibWeb/Bindings/WindowObject.h>
+#include <LibWeb/WebAssembly/WebAssemblyModuleConstructor.h>
+#include <LibWeb/WebAssembly/WebAssemblyModuleObject.h>
+#include <LibWeb/WebAssembly/WebAssemblyModulePrototype.h>
+#include <LibWeb/WebAssembly/WebAssemblyObject.h>
+
+namespace Web::Bindings {
+
+WebAssemblyModuleConstructor::WebAssemblyModuleConstructor(JS::GlobalObject& global_object)
+    : NativeFunction(*global_object.function_prototype())
+{
+}
+
+WebAssemblyModuleConstructor::~WebAssemblyModuleConstructor()
+{
+}
+
+JS::Value WebAssemblyModuleConstructor::call()
+{
+    vm().throw_exception<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "WebAssemblyModule");
+    return {};
+}
+
+JS::Value WebAssemblyModuleConstructor::construct(FunctionObject&)
+{
+    auto& vm = this->vm();
+    auto& global_object = this->global_object();
+
+    auto buffer_object = vm.argument(0).to_object(global_object);
+    if (vm.exception())
+        return {};
+
+    auto result = parse_module(global_object, buffer_object);
+    if (result.is_error()) {
+        vm.throw_exception(global_object, result.error());
+        return {};
+    }
+
+    return heap().allocate<WebAssemblyModuleObject>(global_object, global_object, result.release_value());
+}
+
+void WebAssemblyModuleConstructor::initialize(JS::GlobalObject& global_object)
+{
+    auto& vm = this->vm();
+    auto& window = static_cast<WindowObject&>(global_object);
+
+    NativeFunction::initialize(global_object);
+    define_property(vm.names.prototype, &window.ensure_web_prototype<WebAssemblyModulePrototype>("WebAssemblyModulePrototype"));
+    define_property(vm.names.length, JS::Value(1), JS::Attribute::Configurable);
+}
+
+}