rocketmq_filter/
expression.rs

1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17pub mod evaluation_context;
18
19use std::error::Error;
20
21use crate::expression::evaluation_context::EvaluationContext;
22
23pub trait Expression {
24    /// Calculate expression result with context
25    ///
26    /// # Arguments
27    ///
28    /// * `context` - Context of evaluation
29    ///
30    /// # Returns
31    ///
32    /// The value of this expression
33    fn evaluate(
34        &self,
35        context: &dyn EvaluationContext,
36    ) -> Result<
37        Box<dyn std::any::Any + Send + Sync + 'static>,
38        Box<dyn Error + Send + Sync + 'static>,
39    >;
40}
rocketmq_filter/expression.rs

rocketmq_filter/
expression.rs
