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/*
* parsing/rule/impls/double_angle.rs
*
* ftml - Library to parse Wikidot text
* Copyright (C) 2019-2026 Wikijump Team
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
use super::prelude::*;
pub const RULE_DOUBLE_ANGLE: Rule = Rule {
name: "double-angle",
position: LineRequirement::Any,
try_consume_fn,
};
fn try_consume_fn<'r, 't>(
parser: &mut Parser<'r, 't>,
) -> ParseResult<'r, 't, Elements<'t>> {
let current = parser.current();
debug!(
"Consuming token '{}', to create a left/right double angle quote",
current.token.name(),
);
match current.token {
// « - LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
Token::LeftDoubleAngle => ok!(text!("\u{0ab}")),
// » - RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
Token::Quote if current.slice == ">>" => ok!(text!("\u{0bb}")),
// Some other series of ">"s in a line
Token::Quote => Err(parser.make_err(ParseErrorKind::RuleFailed)),
// Invalid token for this rule
_ => unreachable!(),
}
}