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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 selectors::parser::ParserContext as SelectorParserContext;
use cssparser::{Parser, SourcePosition};
use url::{Url, UrlParser};
use log;
use stylesheets::Origin;
pub struct ParserContext<'a> {
pub base_url: &'a Url,
pub selector_context: SelectorParserContext,
}
impl<'a> ParserContext<'a> {
pub fn new(stylesheet_origin: Origin, base_url: &'a Url) -> ParserContext<'a> {
let mut selector_context = SelectorParserContext::new();
selector_context.in_user_agent_stylesheet = stylesheet_origin == Origin::UserAgent;
ParserContext {
base_url: base_url,
selector_context: selector_context,
}
}
}
impl<'a> ParserContext<'a> {
pub fn parse_url(&self, input: &str) -> Url {
UrlParser::new().base_url(self.base_url).parse(input)
.unwrap_or_else(|_| Url::parse("about:invalid").unwrap())
}
}
/// Defaults to a no-op.
/// Set a `RUST_LOG=style::errors` environment variable
/// to log CSS parse errors to stderr.
pub fn log_css_error(input: &mut Parser, position: SourcePosition, message: &str) {
if log_enabled!(log::INFO) {
let location = input.source_location(position);
// TODO eventually this will got into a "web console" or something.
info!("{}:{} {}", location.line, location.column, message)
}
}
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