mirror of
https://github.com/danog/dart-sass.git
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36 lines
1.3 KiB
Dart
36 lines
1.3 KiB
Dart
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// Copyright 2016 Google Inc. Use of this source code is governed by an
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// MIT-style license that can be found in the LICENSE file or at
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// https://opensource.org/licenses/MIT.
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import '../../ast/sass/expression.dart';
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import '../../ast/sass/expression/identifier.dart';
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import '../../ast/sass/expression/interpolation.dart';
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import '../../ast/sass/expression/list.dart';
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import '../../ast/sass/expression/string.dart';
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import '../../value.dart';
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import '../../value/identifier.dart';
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import '../../value/list.dart';
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import '../../value/string.dart';
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import '../expression.dart';
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class PerformExpressionVisitor extends ExpressionVisitor<Value> {
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Value visit(Expression expression) => expression.visit(this);
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Identifier visitIdentifierExpression(IdentifierExpression node) =>
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new Identifier(visitInterpolationExpression(node.text).text);
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SassString visitInterpolationExpression(InterpolationExpression node) {
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return new SassString(node.contents.map((value) {
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if (value is String) return value;
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return (value as Expression).visit(this);
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}).join());
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}
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SassList visitListExpression(ListExpression node) => new SassList(
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node.contents.map((expression) => expression.visit(this)),
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node.separator);
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SassString visitStringExpression(StringExpression node) =>
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visitInterpolationExpression(node.text);
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}
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