terry@google.com
8992076c3c
- Added parameter support for mixins. - Support var definition with multiple parameters as an @include parameter. - Support @extend and @extend with nested selectors. - Removed hoisting var and cycle checks - can only reference known vars. - Added bunch of tests. BUG= Review URL: https://codereview.chromium.org//23819036 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28555 260f80e4-7a28-3924-810f-c04153c831b5
101 lines
3.5 KiB
Dart
101 lines
3.5 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library csslib.src.options;
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import 'package:args/args.dart';
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class PreprocessorOptions {
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/** Generate polyfill code (e.g., var, etc.) */
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final bool polyfill;
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/** Report warnings as errors. */
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final bool warningsAsErrors;
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/** Throw an exception on warnings (not used by command line tool). */
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final bool throwOnWarnings;
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/** Throw an exception on errors (not used by command line tool). */
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final bool throwOnErrors;
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/** True to show informational messages. The `--verbose` flag. */
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final bool verbose;
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/** True to show warning messages for bad CSS. The '--checked' flag. */
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final bool checked;
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// TODO(terry): Add mixin support and nested rules.
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/**
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* Subset of Less commands enabled; disable with '--no-less'.
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* Less syntax supported:
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* - @name at root level statically defines variables resolved at compilation
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* time. Essentially a directive e.g., @var-name.
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*/
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final bool lessSupport;
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/** Whether to use colors to print messages on the terminal. */
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final bool useColors;
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/** File to process by the compiler. */
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String inputFile;
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// We could make this faster, if it ever matters.
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factory PreprocessorOptions() => parse(['']);
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PreprocessorOptions.fromArgs(ArgResults args)
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: warningsAsErrors = args['warnings_as_errors'],
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throwOnWarnings = args['throw_on_warnings'],
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throwOnErrors = args['throw_on_errors'],
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verbose = args['verbose'],
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checked = args['checked'],
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lessSupport = args['less'],
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useColors = args['colors'],
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polyfill = args['polyfill'],
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inputFile = args.rest.length > 0 ? args.rest[0] : null;
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// tool.dart [options...] <css file>
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static PreprocessorOptions parse(List<String> arguments) {
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var parser = new ArgParser()
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..addFlag('verbose', abbr: 'v', defaultsTo: false, negatable: false,
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help: 'Display detail info')
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..addFlag('checked', defaultsTo: false, negatable: false,
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help: 'Validate CSS values invalid value display a warning message')
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..addFlag('less', defaultsTo: true, negatable: true,
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help: 'Supports subset of Less syntax')
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..addFlag('suppress_warnings', defaultsTo: true,
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help: 'Warnings not displayed')
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..addFlag('warnings_as_errors', defaultsTo: false,
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help: 'Warning handled as errors')
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..addFlag('throw_on_errors', defaultsTo: false,
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help: 'Throw on errors encountered')
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..addFlag('throw_on_warnings', defaultsTo: false,
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help: 'Throw on warnings encountered')
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..addFlag('colors', defaultsTo: true,
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help: 'Display errors/warnings in colored text')
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..addFlag('polyfill', defaultsTo: false,
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help: 'Generate polyfill for new CSS features')
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..addFlag('help', abbr: 'h', defaultsTo: false, negatable: false,
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help: 'Displays this help message');
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try {
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var results = parser.parse(arguments);
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if (results['help'] || results.rest.length == 0) {
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showUsage(parser);
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return null;
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}
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return new PreprocessorOptions.fromArgs(results);
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} on FormatException catch (e) {
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print(e.message);
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showUsage(parser);
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return null;
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}
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}
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static showUsage(parser) {
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print('Usage: css [options...] input.css');
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print(parser.getUsage());
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}
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}
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