lewp-css 0.2.0

// 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 {
    crate::{
        parsers::{Parse, ParserContext},
        CustomParseError,
    },
    cssparser::{ParseError, Parser, ToCss},
    std::fmt,
};

/// A specified url() value; should be resolved relative to the stylesheet containing it
#[derive(Debug, Clone, Ord, PartialOrd, Eq, PartialEq, Hash)]
pub struct SpecifiedUrl(pub String);

impl ToCss for SpecifiedUrl {
    fn to_css<W: fmt::Write>(&self, dest: &mut W) -> fmt::Result {
        dest.write_str("url(")?;
        dest.write_str(&self.0)?;
        dest.write_str(")")
    }
}

impl Parse for SpecifiedUrl {
    fn parse<'i, 't>(
        _context: &ParserContext,
        input: &mut Parser<'i, 't>,
    ) -> Result<Self, ParseError<'i, CustomParseError<'i>>> {
        let url = input.expect_url()?;
        Ok(SpecifiedUrl(url.as_ref().to_owned()))
    }
}

impl SpecifiedUrl {
    /// See <https://drafts.csswg.org/css-values/#local-urls>
    pub fn is_fragment(&self) -> bool {
        self.0.chars().next().map_or(false, |c| c == '#')
    }
}