Support parsing identifiers with escape codes in them

The output of `CssPrinter` will now also retain escape codes in identifiers.
This ensures they remain valid identifiers, as the escaped values may not parse
as valid identifiers.

The parser will also no longer accept an ID or class selector with space between
the first token (`#` or `.` respectively) and the identifier. The parser will
now fail immediately on these selector errors instead of attempting to recover.
Recovering in a robust manner is difficult given that this parser immediately
attempts to parse at the selector granularity, rather than first parsing the
style sheet into rules as described [here][parse-rule].


4 files changed
tree: 4a08953fd06e977dfff1e7e663bd7b654e8ea372
  1. example/
  2. lib/
  3. test/
  4. .gitignore
  5. .test_config
  6. .travis.yml
  7. analysis_options.yaml
  10. pubspec.yaml

A Dart CSS parser.


Parsing CSS is easy!

import 'package:csslib/parser.dart';

main() {
  var stylesheet = parse(
      '.foo { color: red; left: 20px; top: 20px; width: 100px; height:200px }');

You can pass a String or List<int> to parse.