Protocol Buffer runtime library and 'protoc' plugin

lib/protobuf/runtime/mock_io.dart

+// Copyright (c) 2012, 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.
+
+/**
+ * As needed mock alternative to dart:io for environments
+ * where dart:io is unavailable.
+ */
+class InputStream {
+  int available() {
+    throw new UnsupportedOperationException(
+        "Method InputStream.available() not available");
+  }
+  bool get closed() {
+    throw new UnsupportedOperationException(
+        "Method InputStream.closed() not available");
+  }
+  List<int> read([int readSize]) {
+    throw new UnsupportedOperationException(
+        "Method InputStream.read() not available");
+  }
+  void set onClosed(void callback()) {
+    throw new UnsupportedOperationException(
+        "Setter InputStream.onClosed() not available");
+  }
+  void set onData(void callback()) {
+    throw new UnsupportedOperationException(
+        "Setter InputStream.onData not available");
+  }
+  void set onError(void callback(Exception e)) {
+    throw new UnsupportedOperationException(
+        "Setter InputStream.onError not available");
+  }
+}