wasefire_cli_tools/error.rs
1// Copyright 2024 Google LLC
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::error::Error;
16
17/// Checks the root cause of an error.
18///
19/// Returns whether the root cause of the error is of the provided type and satisfies the predicate.
20pub fn root_cause_is<E: Error + Send + Sync + 'static>(
21 error: &anyhow::Error, predicate: impl FnOnce(&E) -> bool,
22) -> bool {
23 error.root_cause().downcast_ref::<E>().is_some_and(predicate)
24}