Initial checkin of gRPC to third_party/

third_party/grpc/tools/buildgen/plugins/transitive_dependencies.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.
 
+"""Buildgen transitive dependencies
 
-"""This file exports public symbols.
+This takes the list of libs, node_modules, and targets from our
+yaml dictionary, and adds to each the transitive closure
+of the list of dependencies.
+
 """
 
+def get_lib(libs, name):
+  try:
+    return next(lib for lib in libs if lib['name']==name)
+  except StopIteration:
+    return None
 
-from mod_pywebsocket._stream_base import BadOperationException
-from mod_pywebsocket._stream_base import ConnectionTerminatedException
-from mod_pywebsocket._stream_base import InvalidFrameException
-from mod_pywebsocket._stream_base import InvalidUTF8Exception
-from mod_pywebsocket._stream_base import UnsupportedFrameException
-from mod_pywebsocket._stream_hixie75 import StreamHixie75
-from mod_pywebsocket._stream_hybi import Frame
-from mod_pywebsocket._stream_hybi import Stream
-from mod_pywebsocket._stream_hybi import StreamOptions
+def transitive_deps(lib, libs):
+  if lib is not None and 'deps' in lib:
+    # Recursively call transitive_deps on each dependency, and take the union
+    return set.union(set(lib['deps']),
+                     *[set(transitive_deps(get_lib(libs, dep), libs))
+                       for dep in lib['deps']])
+  else:
+    return set()
 
-# These methods are intended to be used by WebSocket client developers to have
-# their implementations receive broken data in tests.
-from mod_pywebsocket._stream_hybi import create_close_frame
-from mod_pywebsocket._stream_hybi import create_header
-from mod_pywebsocket._stream_hybi import create_length_header
-from mod_pywebsocket._stream_hybi import create_ping_frame
-from mod_pywebsocket._stream_hybi import create_pong_frame
-from mod_pywebsocket._stream_hybi import create_binary_frame
-from mod_pywebsocket._stream_hybi import create_text_frame
-from mod_pywebsocket._stream_hybi import create_closing_handshake_body
+def mako_plugin(dictionary):
+  """The exported plugin code for transitive_dependencies.
 
+  Each item in libs, node_modules, and targets can have a deps list.
+  We add a transitive_deps property to each with the transitive closure
+  of those dependency lists.
+  """
+  libs = dictionary.get('libs')
+  node_modules = dictionary.get('node_modules')
+  targets = dictionary.get('targets')
 
-# vi:sts=4 sw=4 et
+  for target_list in (libs, targets, node_modules):
+    for target in target_list:
+      target['transitive_deps'] = transitive_deps(target, libs)
+
+  python_dependencies = dictionary.get('python_dependencies')
+  python_dependencies['transitive_deps'] = (
+      transitive_deps(python_dependencies, libs))