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# Copyright 2015 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Buildgen transitive dependencies
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
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()
def mako_plugin(dictionary):
"""The exported plugin code for transitive_dependencies.
Iterate over each list and check each item for a deps list. We add a
transitive_deps property to each with the transitive closure of those
dependency lists.
"""
libs = dictionary.get('libs')
for target_name, target_list in dictionary.items():
for target in target_list:
if isinstance(target, dict) and 'deps' in target:
target['transitive_deps'] = transitive_deps(target, libs)
python_dependencies = dictionary.get('python_dependencies')
python_dependencies['transitive_deps'] = (
transitive_deps(python_dependencies, libs))
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