2 # Copyright (C) 2013 Google Inc. All rights reserved.
4 # Redistribution and use in source and binary forms, with or without
5 # modification, are permitted provided that the following conditions are
8 # * Redistributions of source code must retain the above copyright
9 # notice, this list of conditions and the following disclaimer.
10 # * Redistributions in binary form must reproduce the above
11 # copyright notice, this list of conditions and the following disclaimer
12 # in the documentation and/or other materials provided with the
14 # * Neither the name of Google Inc. nor the names of its
15 # contributors may be used to endorse or promote products derived from
16 # this software without specific prior written permission.
18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 from name_utilities import lower_first
35 import template_expander
38 class RuntimeFeatureWriter(in_generator.Writer):
39 class_name = 'RuntimeEnabledFeatures'
41 'enable_conditional': name_utilities.enable_conditional_if_endif,
44 # FIXME: valid_values and defaults should probably roll into one object.
46 'status': ['stable', 'experimental', 'test'],
55 def __init__(self, in_file_path):
56 super(RuntimeFeatureWriter, self).__init__(in_file_path)
57 self._outputs = {(self.class_name + '.h'): self.generate_header,
58 (self.class_name + '.cpp'): self.generate_implementation,
61 self._features = self.in_file.name_dictionaries
62 # Make sure the resulting dictionaries have all the keys we expect.
63 for feature in self._features:
64 feature['first_lowered_name'] = lower_first(feature['name'])
65 # Most features just check their isFooEnabled bool
66 # but some depend on more than one bool.
67 enabled_condition = 'is%sEnabled' % feature['name']
68 for dependant_name in feature['depends_on']:
69 enabled_condition += ' && is%sEnabled' % dependant_name
70 feature['enabled_condition'] = enabled_condition
71 self._non_custom_features = filter(lambda feature: not feature['custom'], self._features)
73 def _feature_sets(self):
74 # Another way to think of the status levels is as "sets of features"
75 # which is how we're referring to them in this generator.
76 return self.valid_values['status']
78 @template_expander.use_jinja(class_name + '.h.tmpl', filters=filters)
79 def generate_header(self):
81 'features': self._features,
82 'feature_sets': self._feature_sets(),
85 @template_expander.use_jinja(class_name + '.cpp.tmpl', filters=filters)
86 def generate_implementation(self):
88 'features': self._features,
89 'feature_sets': self._feature_sets(),
93 if __name__ == '__main__':
94 in_generator.Maker(RuntimeFeatureWriter).main(sys.argv)