27 lines
595 B
Dart
27 lines
595 B
Dart
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import 'dart:async';
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import 'ast/ast.dart';
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import 'stream_reader.dart';
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import 'token.dart';
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class Parser implements StreamConsumer<Token> {
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bool _closed = false;
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final StreamReader<Token> _reader = new StreamReader();
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final StreamController<Node> _onNode = new StreamController<Node>();
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Stream<Node> get onNode => _onNode.stream;
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@override
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Future addStream(Stream<Token> stream) async {
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if (_closed) throw new StateError('Parser is already closed.');
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stream.pipe(_reader);
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}
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@override
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Future close() async {
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_closed = true;
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await _onNode.close();
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}
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}
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