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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 expand filegroups plugin.
This takes the list of libs from our yaml dictionary,
and expands any and all filegroup.
"""
def excluded(filename, exclude_res):
for r in exclude_res:
if r.search(filename):
return True
return False
def uniquify(lst):
out = []
for el in lst:
if el not in out:
out.append(el)
return out
FILEGROUP_LISTS = ['src', 'headers', 'public_headers', 'deps']
FILEGROUP_DEFAULTS = {
'language': 'c',
'boringssl': False,
'zlib': False,
'ares': False,
}
def mako_plugin(dictionary):
"""The exported plugin code for expand_filegroups.
The list of libs in the build.yaml file can contain "filegroups" tags.
These refer to the filegroups in the root object. We will expand and
merge filegroups on the src, headers and public_headers properties.
"""
libs = dictionary.get('libs')
targets = dictionary.get('targets')
filegroups_list = dictionary.get('filegroups')
filegroups = {}
for fg in filegroups_list:
for lst in FILEGROUP_LISTS:
fg[lst] = fg.get(lst, [])
fg['own_%s' % lst] = list(fg[lst])
for attr, val in FILEGROUP_DEFAULTS.iteritems():
if attr not in fg:
fg[attr] = val
todo = list(filegroups_list)
skips = 0
while todo:
assert skips != len(
todo), "infinite loop in filegroup uses clauses: %r" % [
t['name'] for t in todo
]
# take the first element of the todo list
cur = todo[0]
todo = todo[1:]
# check all uses filegroups are present (if no, skip and come back later)
skip = False
for uses in cur.get('uses', []):
if uses not in filegroups:
skip = True
if skip:
skips += 1
todo.append(cur)
else:
skips = 0
assert 'plugins' not in cur
plugins = []
for uses in cur.get('uses', []):
for plugin in filegroups[uses]['plugins']:
if plugin not in plugins:
plugins.append(plugin)
for lst in FILEGROUP_LISTS:
vals = cur.get(lst, [])
vals.extend(filegroups[uses].get(lst, []))
cur[lst] = vals
cur_plugin_name = cur.get('plugin')
if cur_plugin_name:
plugins.append(cur_plugin_name)
cur['plugins'] = plugins
filegroups[cur['name']] = cur
# build reverse dependency map
things = {}
for thing in dictionary['libs'] + dictionary['targets'] + dictionary[
'filegroups']:
things[thing['name']] = thing
thing['used_by'] = []
thing_deps = lambda t: t.get('uses', []) + t.get('filegroups', []) + t.get('deps', [])
for thing in things.itervalues():
done = set()
todo = thing_deps(thing)
while todo:
cur = todo[0]
todo = todo[1:]
if cur in done: continue
things[cur]['used_by'].append(thing['name'])
todo.extend(thing_deps(things[cur]))
done.add(cur)
# the above expansion can introduce duplicate filenames: contract them here
for fg in filegroups.itervalues():
for lst in FILEGROUP_LISTS:
fg[lst] = uniquify(fg.get(lst, []))
for tgt in dictionary['targets']:
for lst in FILEGROUP_LISTS:
tgt[lst] = tgt.get(lst, [])
tgt['own_%s' % lst] = list(tgt[lst])
for lib in libs + targets:
assert 'plugins' not in lib
plugins = []
for lst in FILEGROUP_LISTS:
vals = lib.get(lst, [])
lib[lst] = list(vals)
lib['own_%s' % lst] = list(vals)
for fg_name in lib.get('filegroups', []):
fg = filegroups[fg_name]
for plugin in fg['plugins']:
if plugin not in plugins:
plugins.append(plugin)
for lst in FILEGROUP_LISTS:
vals = lib.get(lst, [])
vals.extend(fg.get(lst, []))
lib[lst] = vals
lib['plugins'] = plugins
if lib.get('generate_plugin_registry', False):
lib['src'].append('src/core/plugin_registry/%s_plugin_registry.cc' %
lib['name'])
for lst in FILEGROUP_LISTS:
lib[lst] = uniquify(lib.get(lst, []))
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