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/* 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 std::local_data;
use cssparser::ast::{SyntaxError, SourceLocation};
pub struct ErrorLoggerIterator<I>(I);
impl<T, I: Iterator<Result<T, SyntaxError>>> Iterator<T> for ErrorLoggerIterator<I> {
fn next(&mut self) -> Option<T> {
let ErrorLoggerIterator(ref mut this) = *self;
loop {
match this.next() {
Some(Ok(v)) => return Some(v),
Some(Err(error)) => log_css_error(error.location, format!("{:?}", error.reason)),
None => return None,
}
}
}
}
// FIXME: go back to `()` instead of `bool` after upgrading Rust
// past 898669c4e203ae91e2048fb6c0f8591c867bccc6
// Using bool is a work-around for https://github.com/mozilla/rust/issues/13322
local_data_key!(silence_errors: bool)
pub fn log_css_error(location: SourceLocation, message: &str) {
// TODO eventually this will got into a "web console" or something.
if local_data::get(silence_errors, |silenced| silenced.is_none()) {
error!("{:u}:{:u} {:s}", location.line, location.column, message)
}
}
pub fn with_errors_silenced<T>(f: || -> T) -> T {
local_data::set(silence_errors, true);
let result = f();
local_data::pop(silence_errors);
result
}
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