// Copyright (c) 2023 Huawei Device Co., Ltd.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use crate::Token;

/// Utilities of an io event.
pub trait EventTrait {
    /// Gets the data inside the event
    fn token(&self) -> Token;

    /// Checks if the event is readable.
    fn is_readable(&self) -> bool;

    /// Checks if the event is writeable.
    fn is_writable(&self) -> bool;

    /// Checks if the event is read-wise closed.
    fn is_read_closed(&self) -> bool;

    /// Checks if the event is write-wise closed.
    fn is_write_closed(&self) -> bool;

    /// Checks if the event is an error
    fn is_error(&self) -> bool;
}