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.


/// The data that the parser needs from outside in order to parse a stylesheet.
pub struct ParserContext
{
	/// The current rule type, if any.
	pub(crate) rule_type: Option<CssRuleType>,
	
	/// The mode to use when parsing.
	pub(crate) parsing_mode: ParsingMode,
}

impl ParserContext
{
	// Creates a parser context based on a previous context, but with a modified rule type.
	pub(crate) fn new_with_rule_type(context: &ParserContext, rule_type: CssRuleType) -> ParserContext
	{
		Self
		{
			rule_type: Some(rule_type),
			parsing_mode: context.parsing_mode,
		}
	}
	
	#[inline(always)]
	pub(crate) fn isInPageRule(&self) -> bool
	{
		self.rule_type.map_or(false, |rule_type| rule_type == CssRuleType::Page)
	}
	
	#[inline(always)]
	pub(crate) fn isNotInPageRule(&self) -> bool
	{
		!self.isInPageRule()
	}
	
	pub(crate) fn parsing_mode_allows_unitless_lengths(&self) -> bool
	{
		self.parsing_mode.allows_unitless_lengths()
	}
}