1cac7dca0Sopenharmony_ci// Copyright (c) 2023 Huawei Device Co., Ltd. 2cac7dca0Sopenharmony_ci// Licensed under the Apache License, Version 2.0 (the "License"); 3cac7dca0Sopenharmony_ci// you may not use this file except in compliance with the License. 4cac7dca0Sopenharmony_ci// You may obtain a copy of the License at 5cac7dca0Sopenharmony_ci// 6cac7dca0Sopenharmony_ci// http://www.apache.org/licenses/LICENSE-2.0 7cac7dca0Sopenharmony_ci// 8cac7dca0Sopenharmony_ci// Unless required by applicable law or agreed to in writing, software 9cac7dca0Sopenharmony_ci// distributed under the License is distributed on an "AS IS" BASIS, 10cac7dca0Sopenharmony_ci// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11cac7dca0Sopenharmony_ci// See the License for the specific language governing permissions and 12cac7dca0Sopenharmony_ci// limitations under the License. 13cac7dca0Sopenharmony_ci 14cac7dca0Sopenharmony_ciuse crate::Token; 15cac7dca0Sopenharmony_ci 16cac7dca0Sopenharmony_ci/// Utilities of an io event. 17cac7dca0Sopenharmony_cipub trait EventTrait { 18cac7dca0Sopenharmony_ci /// Gets the data inside the event 19cac7dca0Sopenharmony_ci fn token(&self) -> Token; 20cac7dca0Sopenharmony_ci 21cac7dca0Sopenharmony_ci /// Checks if the event is readable. 22cac7dca0Sopenharmony_ci fn is_readable(&self) -> bool; 23cac7dca0Sopenharmony_ci 24cac7dca0Sopenharmony_ci /// Checks if the event is writeable. 25cac7dca0Sopenharmony_ci fn is_writable(&self) -> bool; 26cac7dca0Sopenharmony_ci 27cac7dca0Sopenharmony_ci /// Checks if the event is read-wise closed. 28cac7dca0Sopenharmony_ci fn is_read_closed(&self) -> bool; 29cac7dca0Sopenharmony_ci 30cac7dca0Sopenharmony_ci /// Checks if the event is write-wise closed. 31cac7dca0Sopenharmony_ci fn is_write_closed(&self) -> bool; 32cac7dca0Sopenharmony_ci 33cac7dca0Sopenharmony_ci /// Checks if the event is an error 34cac7dca0Sopenharmony_ci fn is_error(&self) -> bool; 35cac7dca0Sopenharmony_ci} 36