dart-sass/lib/src/value/list.dart

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// Copyright 2016 Google Inc. Use of this source code is governed by an
// MIT-style license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT.
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import 'package:charcode/charcode.dart';
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import '../utils.dart';
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import '../visitor/value.dart';
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import '../value.dart';
class SassList extends Value {
final List<Value> contents;
final ListSeparator separator;
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final bool isBracketed;
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bool get isBlank => contents.every((element) => element.isBlank);
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SassList(Iterable<Value> contents, this.separator, {bool bracketed})
: contents = new List.unmodifiable(contents),
isBracketed = bracketed;
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/*=T*/ accept/*<T>*/(ValueVisitor/*<T>*/ visitor) =>
visitor.visitList(this);
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bool operator ==(other) =>
other is SassList &&
other.separator == separator &&
other.isBracketed == isBracketed &&
listEquals(other.contents, contents);
int get hashCode => listHash(contents);
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// TODO: parenthesize nested lists if necessary
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String toString() {
var buffer = new StringBuffer();
if (isBracketed) buffer.writeCharCode($lbracket);
buffer.write(contents.join(separator == ListSeparator.comma ? ", " : " "));
if (isBracketed) buffer.writeCharCode($rbracket);
return buffer.toString();
}
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}
class ListSeparator {
static const space = const ListSeparator._("space");
static const comma = const ListSeparator._("comma");
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static const undecided = const ListSeparator._("undecided");
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final String name;
const ListSeparator._(this.name);
String toString() => name;
}