Clone of chromium aad1ce808763f59c7a3753e08f1500a104ecc6fd refs/remotes/origin/HEAD
diff --git a/mojo/tools/generate_java_callback_interfaces.py b/mojo/tools/generate_java_callback_interfaces.py
new file mode 100644
index 0000000..257a540
--- /dev/null
+++ b/mojo/tools/generate_java_callback_interfaces.py
@@ -0,0 +1,69 @@
+"""Generate the org.chromium.mojo.bindings.Callbacks interface"""
+
+import argparse
+import sys
+
+CALLBACK_TEMPLATE = ("""
+ /**
+ * A generic %d-argument callback.
+ *
+ * %s
+ */
+ interface Callback%d<%s> {
+ /**
+ * Call the callback.
+ */
+ public void call(%s);
+ }
+""")
+
+INTERFACE_TEMPLATE = (
+"""// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file was generated using
+// mojo/tools/generate_java_callback_interfaces.py
+
+package org.chromium.mojo.bindings;
+
+/**
+ * Contains a generic interface for callbacks.
+ */
+public interface Callbacks {
+
+ /**
+ * A generic callback.
+ */
+ interface Callback0 {
+ /**
+ * Call the callback.
+ */
+ public void call();
+ }
+%s
+}""")
+
+def GenerateCallback(nb_args):
+ params = '\n * '.join(
+ ['@param <T%d> the type of argument %d.' % (i+1, i+1)
+ for i in xrange(nb_args)])
+ template_parameters = ', '.join(['T%d' % (i+1) for i in xrange(nb_args)])
+ callback_parameters = ', '.join(['T%d arg%d' % ((i+1), (i+1))
+ for i in xrange(nb_args)])
+ return CALLBACK_TEMPLATE % (nb_args, params, nb_args, template_parameters,
+ callback_parameters)
+
+def main():
+ parser = argparse.ArgumentParser(
+ description="Generate org.chromium.mojo.bindings.Callbacks")
+ parser.add_argument("max_args", nargs=1, type=int,
+ help="maximal number of arguments to generate callbacks for")
+ args = parser.parse_args()
+ max_args = args.max_args[0]
+ print INTERFACE_TEMPLATE % ''.join([GenerateCallback(i+1)
+ for i in xrange(max_args)])
+ return 0
+
+if __name__ == "__main__":
+ sys.exit(main())
