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/*
 * render/null.rs
 *
 * ftml - Convert Wikidot code to HTML
 * Copyright (C) 2019 Ammon Smith
 *
 * 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/>.
 */

//! A "renderer" which only returns a constant string.
//! Matches Wikidot's `/norender/true` specification.

use super::Render;
use crate::{PageInfo, Result, SyntaxTree};

#[derive(Debug, Copy, Clone, PartialEq, Eq)]
pub struct NullRender;

impl Render for NullRender {
    type Output = &'static str;

    #[inline]
    fn render(&self, _tree: &SyntaxTree, _info: PageInfo) -> Result<&'static str> {
        Ok("[[content]]")
    }
}