Initial checkin of gRPC to third_party/

third_party/grpc/tools/buildgen/bunch.py

-# Copyright 2011, Google Inc.
+# Copyright 2015-2016, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
 # in the documentation and/or other materials provided with the
 # distribution.
 #     * Neither the name of Google Inc. nor the names of its
 # contributors may be used to endorse or promote products derived from
 # this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-
-import logging
-_GOODBYE_MESSAGE = u'Goodbye'
+"""Allows dot-accessible dictionaries."""
 
 
-def web_socket_do_extra_handshake(request):
-    pass  # Always accept.
+class Bunch(dict):
+
+  def __init__(self, d):
+    dict.__init__(self, d)
+    self.__dict__.update(d)
 
 
-def web_socket_transfer_data(request):
-    while True:
-        line = request.ws_stream.receive_message()
-        if line is None:
-            return
-        if isinstance(line, unicode):
-            request.ws_stream.send_message(line, binary=False)
-            if line == _GOODBYE_MESSAGE:
-                return
-        else:
-            request.ws_stream.send_message(line, binary=True)
+# Converts any kind of variable to a Bunch
+def to_bunch(var):
+  if isinstance(var, list):
+    return [to_bunch(i) for i in var]
+  if isinstance(var, dict):
+    ret = {}
+    for k, v in var.items():
+      if isinstance(v, (list, dict)):
+        v = to_bunch(v)
+      ret[k] = v
+    return Bunch(ret)
+  else:
+    return var
 
 
-def web_socket_passive_closing_handshake(request):
-    return request.ws_close_code, request.ws_close_reason
+# Merges JSON 'add' into JSON 'dst'
+def merge_json(dst, add):
+  if isinstance(dst, dict) and isinstance(add, dict):
+    for k, v in add.items():
+      if k in dst:
+        if k == '#': continue
+        merge_json(dst[k], v)
+      else:
+        dst[k] = v
+  elif isinstance(dst, list) and isinstance(add, list):
+    dst.extend(add)
+  else:
+    raise Exception('Tried to merge incompatible objects %s %s\n\n%r\n\n%r' % (type(dst).__name__, type(add).__name__, dst, add))
+