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/* Copyright 2016 Joshua Gentry * * Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or * http://www.apache.org/licenses/LICENSE-2.0> or the MIT license * <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your * option. This file may not be copied, modified, or distributed * except according to those terms. */ use std::fmt::{Display, Formatter, Error}; //************************************************************************************************* /// Defines the possible warnings. #[derive(Debug)] pub enum Warning { //--------------------------------------------------------------------------------------------- /// An optional value was not found. The default value will be used instead. Missing(String), //--------------------------------------------------------------------------------------------- /// An value was read from the TOML file that does not contain a definition. Includes the /// name of the item. Undefined(String) } impl Display for Warning { //********************************************************************************************* /// Display a nice message for the warning. fn fmt( &self, fmt : &mut Formatter ) -> Result<(), Error> { match *self { Warning::Missing(ref name) => write!(fmt, "{} is not defined, using the default value.", name), Warning::Undefined(ref name) => write!(fmt, "{} is not a known ID and will be ignored.", name) } } }