Fasta builders.

pkg/fasta/lib/src/export.dart

Index: pkg/fasta/lib/src/export.dart
diff --git a/pkg/fasta/lib/src/export.dart b/pkg/fasta/lib/src/export.dart
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index 0000000000000000000000000000000000000000..17894a722cf25970212d7d06abc6252fadfadeac
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+++ b/pkg/fasta/lib/src/export.dart
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+// 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.export;
+
+import 'builder/builder.dart' show
+    Builder,
+    LibraryBuilder;
+
+import 'combinator.dart' show
+    Combinator;
+
+class Export {
+  /// The library that is exporting [exported];
+  final LibraryBuilder exporter;
+
+  /// The library being exported.
+  final LibraryBuilder exported;
+
+  final List<Combinator> combinators;
+
+  Export(this.exporter, this.exported, this.combinators);
+
+  bool addToExportScope(String name, Builder member) {
+    if (combinators != null) {
+      for (Combinator combinator in combinators) {
+        if (combinator.isShow && !combinator.names.contains(name)) return false;
+        if (combinator.isHide && combinator.names.contains(name)) return false;
+      }
+    }
+    return exporter.addToExportScope(name, member);
+  }
+}