transact 0.4.7

/*
 * Copyright 2020 Cargill Incorporated
 *
 * 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 glob::PatternError;
use semver::Error as SemverError;

#[derive(Debug)]
pub struct Error {
    context: String,
    source: Option<Box<dyn std::error::Error>>,
}

impl Error {
    pub fn new(context: &str) -> Self {
        Self {
            context: context.into(),
            source: None,
        }
    }

    pub fn new_with_source(context: &str, err: Box<dyn std::error::Error>) -> Self {
        Self {
            context: context.into(),
            source: Some(err),
        }
    }
}

impl std::error::Error for Error {}

impl std::fmt::Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        if let Some(ref err) = self.source {
            write!(f, "{}: {}", self.context, err)
        } else {
            f.write_str(&self.context)
        }
    }
}

impl From<PatternError> for Error {
    fn from(err: PatternError) -> Self {
        Self::new_with_source("invalid file pattern", err.into())
    }
}

impl From<SemverError> for Error {
    fn from(err: SemverError) -> Self {
        Self::new_with_source("invalid version", err.into())
    }
}