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# Copyright 2015, Google Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Buildgen transitive dependencies
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This takes the list of libs, node_modules, and targets from our
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yaml dictionary, and adds to each the transitive closure
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of the list of dependencies.
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"""
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def get_lib(libs, name):
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return next(lib for lib in libs if lib['name']==name)
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def transitive_deps(lib, libs):
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if 'deps' in lib:
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# Recursively call transitive_deps on each dependency, and take the union
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return set.union(set(lib['deps']),
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*[set(transitive_deps(get_lib(libs, dep), libs))
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for dep in lib['deps']])
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else:
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return set()
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def mako_plugin(dictionary):
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"""The exported plugin code for transitive_dependencies.
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Each item in libs, node_modules, and targets can have a deps list.
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We add a transitive_deps property to each with the transitive closure
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of those dependency lists.
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"""
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libs = dictionary.get('libs')
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node_modules = dictionary.get('node_modules')
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targets = dictionary.get('targets')
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for target_list in (libs, targets, node_modules):
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for target in target_list:
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target['transitive_deps'] = transitive_deps(target, libs)
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python_dependencies = dictionary.get('python_dependencies')
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python_dependencies['transitive_deps'] = (
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transitive_deps(python_dependencies, libs))
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