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#!/usr/bin/env python
# Copyright (C) 2013 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 sys
import in_generator
import name_utilities
from name_utilities import lower_first
import template_expander
class RuntimeFeatureWriter(in_generator.Writer):
class_name = 'RuntimeEnabledFeatures'
filters = {
'enable_conditional': name_utilities.enable_conditional_if_endif,
}
# FIXME: valid_values and defaults should probably roll into one object.
valid_values = {
'status': ['stable', 'experimental', 'test', 'deprecated'],
}
defaults = {
'condition' : None,
'depends_on' : [],
'custom': False,
'status': None,
}
_status_aliases = {
'deprecated': 'test',
}
def __init__(self, in_file_path):
super(RuntimeFeatureWriter, self).__init__(in_file_path)
self._outputs = {(self.class_name + '.h'): self.generate_header,
(self.class_name + '.cpp'): self.generate_implementation,
}
self._features = self.in_file.name_dictionaries
# Make sure the resulting dictionaries have all the keys we expect.
for feature in self._features:
feature['first_lowered_name'] = lower_first(feature['name'])
feature['status'] = self._status_aliases.get(feature['status'], feature['status'])
# Most features just check their isFooEnabled bool
# but some depend on more than one bool.
enabled_condition = 'is%sEnabled' % feature['name']
for dependant_name in feature['depends_on']:
enabled_condition += ' && is%sEnabled' % dependant_name
feature['enabled_condition'] = enabled_condition
self._non_custom_features = filter(lambda feature: not feature['custom'], self._features)
def _feature_sets(self):
# Another way to think of the status levels is as "sets of features"
# which is how we're referring to them in this generator.
return [status for status in self.valid_values['status'] if status not in self._status_aliases]
@template_expander.use_jinja(class_name + '.h.tmpl', filters=filters)
def generate_header(self):
return {
'features': self._features,
'feature_sets': self._feature_sets(),
}
@template_expander.use_jinja(class_name + '.cpp.tmpl', filters=filters)
def generate_implementation(self):
return {
'features': self._features,
'feature_sets': self._feature_sets(),
}
if __name__ == '__main__':
in_generator.Maker(RuntimeFeatureWriter).main(sys.argv)
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