lewp-css 0.2.0

Domain model for CSS Stylesheets. Allowing effective minification and transformations such as autoprefixing and removal by other crates. Updated and maintained version for lewp.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

// 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.

use {super::ParsingMode, crate::domain::CssRuleType};

/// 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()
    }
}