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/* * Copyright (c) 2017 Boucher, Antoni <bouanto@zoho.com> * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ //! Settings error type. use std::fmt::{self, Display, Formatter}; use self::SettingError::{UnknownChoice, UnknownSetting, WrongType}; /// Error when getting/setting settings. #[allow(missing_docs)] #[derive(Debug, PartialEq)] pub enum SettingError { /// Unknown setting value choice. UnknownChoice { // The actual value. actual: String, // The list of expected values. expected: Vec<&'static str> }, /// Unknown setting name. UnknownSetting(String), /// Wrong value type for setting. WrongType { // The actual type. actual: String, // The expected type. expected: String, }, } impl Display for SettingError { fn fmt(&self, formatter: &mut Formatter) -> fmt::Result { match *self { UnknownChoice { ref actual, ref expected } => write!(formatter, "unknown choice {}, expecting one of: {}", actual, expected.join(", ")), UnknownSetting(ref name) => write!(formatter, "no setting named {}", name), WrongType { ref actual, ref expected } => write!(formatter, "wrong value type: expecting {}, but found {}", expected, actual), } } }