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/*
* parsing/rule/impls/center.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::*;
use crate::tree::Alignment;
pub const RULE_CENTER: Rule = Rule {
name: "center",
position: LineRequirement::StartOfLine,
try_consume_fn,
};
fn try_consume_fn<'r, 't>(
parser: &mut Parser<'r, 't>,
) -> ParseResult<'r, 't, Elements<'t>> {
debug!("Trying to create centered container");
// Check that the rule has "= "
macro_rules! next {
($token:expr) => {{
let token = parser.current().token;
if token != $token {
return Err(parser.make_err(ParseErrorKind::RuleFailed));
}
parser.step()?;
}};
}
next!(Token::Equals);
next!(Token::Whitespace);
// Collect contents
collect_container(
parser,
RULE_CENTER,
ContainerType::Align(Alignment::Center),
&[
ParseCondition::current(Token::LineBreak),
ParseCondition::current(Token::ParagraphBreak),
ParseCondition::current(Token::InputEnd),
],
&[],
None,
)
}