Begin generating code for summary serialization/deserialization.

pkg/analyzer/lib/src/summary/builder.dart

Index: pkg/analyzer/lib/src/summary/builder.dart
diff --git a/pkg/analyzer/lib/src/summary/builder.dart b/pkg/analyzer/lib/src/summary/builder.dart
new file mode 100644
index 0000000000000000000000000000000000000000..e88004a19db9679787321132a264e6dd89eaad1a
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+++ b/pkg/analyzer/lib/src/summary/builder.dart
@@ -0,0 +1,27 @@
+// Copyright (c) 2014, 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.
+
+/**
+ * Format-agnostic infrastructure for building summary objects.
+ */
+library analyzer.src.summary.builder;
+
+import 'dart:convert';
+
+/**
+ * Instances of this class encapsulate the necessary state to keep track of a
+ * serialized summary that is in the process of being built.
+ *
+ * This class is intended to be passed to the constructors of the summary
+ * Builder classes.
+ */
+class BuilderContext {
+  /**
+   * Finalize the serialized object represented by [ref] and return it in
+   * serialized form as a buffer.
+   */
+  List<int> getBuffer(Object ref) {
+    return JSON.encode(ref).codeUnits;
+  }
+}