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 {
    super::{FamilyNameSyntax, FontFamily},
    crate::{
        domain::Atom,
        parsers::{Parse, ParserContext},
        CustomParseError,
    },
    cssparser::{serialize_string, ParseError, Parser, ToCss},
    std::fmt,
};

#[derive(Clone, Debug, Ord, PartialOrd, Eq, PartialEq, Hash)]
pub struct FamilyName {
    pub name: Atom,
    pub syntax: FamilyNameSyntax,
}

impl ToCss for FamilyName {
    fn to_css<W: fmt::Write>(&self, dest: &mut W) -> fmt::Result {
        match self.syntax {
            FamilyNameSyntax::Quoted => {
                serialize_string(self.name.as_ref(), dest)
            }

            // Note that `serialization` is already escaped or serialized appropriately.
            FamilyNameSyntax::Identifiers(ref serialization) => {
                dest.write_str(&*serialization)
            }
        }
    }
}

// `FamilyName::parse` is based on `FontFamily::parse` and not the other way around because we want to exclude generic family keywords.
impl Parse for FamilyName {
    fn parse<'i, 't>(
        _: &ParserContext,
        input: &mut Parser<'i, 't>,
    ) -> Result<Self, ParseError<'i, CustomParseError<'i>>> {
        match FontFamily::parse(input) {
            Ok(FontFamily::FamilyName(name)) => Ok(name),
            Ok(FontFamily::Generic(_)) => Err(ParseError::from(
                CustomParseError::FontFaceAtRuleFontFamilyCanNotBeGeneric,
            )),
            Err(error) => Err(error),
        }
    }
}

impl FamilyName {
    /// Parses a list of `FamilyName`s.
    pub(crate) fn parse_family_name_list<'i, 't>(
        context: &ParserContext,
        input: &mut Parser<'i, 't>,
    ) -> Result<Vec<Self>, ParseError<'i, CustomParseError<'i>>> {
        input
            .parse_comma_separated(|i| Self::parse(context, i))
            .map_err(|e| e.into())
    }
}