Fasta builders.

pkg/fasta/lib/src/builder/mixed_accessor.dart

+// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library fasta.mixed_accessor;
+
+import 'builder.dart' show
+    Builder;
+
+/// Represents the import of a getter and setter from two different libraries.
+class MixedAccessor extends Builder {
+  final Builder getter;
+  final Builder setter;
+
+  MixedAccessor(this.getter, this.setter) {
+    next = getter;

[Johnni Winther, 2017/01/16 13:01:19]

Do we know that `getter.next == setter` ?

[ahe, 2017/01/16 15:26:33]

No. Only things declared in the same parent can be found in next.

+  }
+}