Johnni Winther
8467186ca0
This CL completes the migration of the first wave of interdependent libraries in package:kernel, including ast.dart. In order to ensure non-nullability on AST properties, the Transformer has been split in 2 variants: Transformer which doesn't support removal of nodes and RemovingTransformer which supports removal where allowed by the context using 'removal sentinels'. Start reviewing Transformer and RemovingTransformer in visitors.dart since many of the changes are caused by the changes here. Included in the migration are the mixin_deduplication.dart and unreachable_code_elimination.dart since these needed porting to the RemovingTransformer which was aided by opting in the libraries which only depended on ast.dart. TEST=existing Change-Id: I9e63b985bd24896c25edd4ee51e37770187bcc17 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/184786 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com>
26 lines
974 B
Dart
26 lines
974 B
Dart
// Copyright (c) 2016, 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 kernel.transformations.flags;
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import '../ast.dart';
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/// Flags summarizing the kinds of AST nodes contained in a given member or
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/// class, for speeding up transformations that only affect certain types of
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/// nodes.
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///
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/// These are set by the frontend and the deserializer.
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class TransformerFlag {
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/// The class or member contains 'super' calls, that is, one of the AST nodes
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/// [SuperPropertyGet], [SuperPropertySet], [SuperMethodInvocation].
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static const int superCalls = 1 << 0;
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/// Temporary flag used by the verifier to indicate that the given member
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/// has been seen.
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static const int seenByVerifier = 1 << 1;
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// TODO(asgerf): We could also add a flag for 'async' and will probably have
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// one for closures as well.
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}
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