css 0.0.22

A crate that uses the cssparser and selectors crates to provide a domain model for CSS Stylesheets. Intended to allow effective minification of CSS and CSS transformations such as autoprefixing and removal by other crates
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// This file is part of css. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT. No part of predicator, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2017 The developers of css. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT.


#[derive(Debug, Clone, Eq, PartialEq)]
pub enum UnitFromStrError
{
	Float(ParseFloatError),
	Conversion(CssNumberConversionError),
	InvalidDimension,
}

impl Display for UnitFromStrError
{
	#[inline(always)]
	fn fmt(&self, f: &mut Formatter) -> fmt::Result
	{
		use self::UnitFromStrError::*;
		
		match *self
		{
			Float(ref error) => write!(f, "Could not parse string to CssFloat because parsing it as a float caused '{}'", error),
			Conversion(ref error) => write!(f, "Could not parse string to CssFloat because converting it from a parsed float caused '{}'", error),
			InvalidDimension => write!(f, "Could not parse string to CssFloat because it had an invalid dimension"),
		}
	}
}

impl Error for UnitFromStrError
{
	#[inline(always)]
	fn description(&self) -> &str
	{
		use self::UnitFromStrError::*;
		
		match *self
		{
			Float(ref error) => error.description(),
			Conversion(ref error) => error.description(),
			InvalidDimension => "invalid dimension",
		}
	}
	
	#[inline(always)]
	fn cause(&self) -> Option<&Error>
	{
		use self::UnitFromStrError::*;
		
		match *self
		{
			Float(ref error) => Some(error),
			Conversion(ref error) => Some(error),
			InvalidDimension => None,
		}
	}
}

impl From<ParseFloatError> for UnitFromStrError
{
	#[inline(always)]
	fn from(error: ParseFloatError) -> Self
	{
		UnitFromStrError::Float(error)
	}
}

impl From<CssNumberConversionError> for UnitFromStrError
{
	#[inline(always)]
	fn from(error: CssNumberConversionError) -> Self
	{
		UnitFromStrError::Conversion(error)
	}
}