ladybird/Userland/Libraries/LibWeb/WebIDL/AbstractOperations.h

/*
 * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
 * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/Forward.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/FunctionObject.h>
#include <LibWeb/Bindings/HostDefined.h>
#include <LibWeb/HTML/Scripting/Environments.h>
#include <LibWeb/WebIDL/CallbackType.h>

namespace Web::WebIDL {

ErrorOr<ByteBuffer> get_buffer_source_copy(JS::Object const& buffer_source);

JS::Completion call_user_object_operation(WebIDL::CallbackType& callback, DeprecatedString const& operation_name, Optional<JS::Value> this_argument, JS::MarkedVector<JS::Value> args);

// https://webidl.spec.whatwg.org/#call-a-user-objects-operation
template<typename... Args>
JS::Completion call_user_object_operation(WebIDL::CallbackType& callback, DeprecatedString const& operation_name, Optional<JS::Value> this_argument, Args&&... args)
{
    auto& function_object = callback.callback;

    JS::MarkedVector<JS::Value> arguments_list { function_object->heap() };
    (arguments_list.append(forward<Args>(args)), ...);

    return call_user_object_operation(callback, operation_name, move(this_argument), move(arguments_list));
}

JS::Completion invoke_callback(WebIDL::CallbackType& callback, Optional<JS::Value> this_argument, JS::MarkedVector<JS::Value> args);

// https://webidl.spec.whatwg.org/#invoke-a-callback-function
template<typename... Args>
JS::Completion invoke_callback(WebIDL::CallbackType& callback, Optional<JS::Value> this_argument, Args&&... args)
{
    auto& function_object = callback.callback;

    JS::MarkedVector<JS::Value> arguments_list { function_object->heap() };
    (arguments_list.append(forward<Args>(args)), ...);

    return invoke_callback(callback, move(this_argument), move(arguments_list));
}

}