/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use cssparser::{SyntaxError, SourceLocation};


pub struct ErrorLoggerIterator<I>(I);

impl<T, I: Iterator<Result<T, SyntaxError>>> Iterator<T> for ErrorLoggerIterator<I> {
    pub fn next(&mut self) -> Option<T> {
        for result in **self {
            match result {
                Ok(v) => return Some(v),
                Err(error) => log_css_error(error.location, fmt!("%?", error.reason))
            }
        }
        None
    }
}


pub fn log_css_error(location: SourceLocation, message: &str) {
    // TODO eventually this will got into a "web console" or something.
    info!("%u:%u %s", location.line, location.column, message)
}