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.


pub trait Unit: Sized + ToCss + Default + CssNumberNewType<<Self as Unit>::Number>
{
	type Number: CssNumber;
	
	const HasDimension: bool;
	
	#[inline(always)]
	fn parse_one_outside_calc_function<'i, 't>(context: &ParserContext, input: &mut Parser<'i, 't>) -> Result<CalculablePropertyValue<Self>, ParseError<'i, CustomParseError<'i>>>;
	
	#[inline(always)]
	fn parse_one_inside_calc_function<'i, 't>(context: &ParserContext, input: &mut Parser<'i, 't>) -> Result<Either<CalculablePropertyValue<Self>, CalcExpression<Self>>, ParseError<'i, CustomParseError<'i>>>;
	
	#[inline(always)]
	fn to_canonical_dimension(self) -> Self
	{
		self
	}
	
	#[inline(always)]
	fn to_canonical_dimension_value<Conversion: FontRelativeLengthConversion<Self::Number> + ViewportPercentageLengthConversion<Self::Number> + PercentageConversion<Self::Number>>(&self, conversion: &Conversion) -> Self::Number;
	
	#[inline(always)]
	fn from_raw_css_for_var_expression_evaluation(value: &str, is_not_in_page_rule: bool) -> Option<Self>;
	
	#[inline(always)]
	fn number_inside_calc_function<'i>(value: f32) -> Result<Either<CalculablePropertyValue<Self>, CalcExpression<Self>>, ParseError<'i, CustomParseError<'i>>>
	{
		let constant = Self::Number::new(value).map_err(|cssNumberConversionError| ParseError::Custom(CouldNotParseCssUnsignedNumber(cssNumberConversionError, value)))?;
		Ok(Right(CalcExpression::Number(constant)))
	}
}