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| 1 #!/usr/bin/env python | 1 #!/usr/bin/env python |
| 2 # Copyright (C) 2013 Google Inc. All rights reserved. | 2 # Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 # | 3 # |
| 4 # Redistribution and use in source and binary forms, with or without | 4 # Redistribution and use in source and binary forms, with or without |
| 5 # modification, are permitted provided that the following conditions are | 5 # modification, are permitted provided that the following conditions are |
| 6 # met: | 6 # met: |
| 7 # | 7 # |
| 8 # * Redistributions of source code must retain the above copyright | 8 # * Redistributions of source code must retain the above copyright |
| 9 # notice, this list of conditions and the following disclaimer. | 9 # notice, this list of conditions and the following disclaimer. |
| 10 # * Redistributions in binary form must reproduce the above | 10 # * Redistributions in binary form must reproduce the above |
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| 36 | 36 |
| 37 | 37 |
| 38 class RuntimeFeatureWriter(in_generator.Writer): | 38 class RuntimeFeatureWriter(in_generator.Writer): |
| 39 class_name = 'RuntimeEnabledFeatures' | 39 class_name = 'RuntimeEnabledFeatures' |
| 40 filters = { | 40 filters = { |
| 41 'enable_conditional': name_utilities.enable_conditional_if_endif, | 41 'enable_conditional': name_utilities.enable_conditional_if_endif, |
| 42 } | 42 } |
| 43 | 43 |
| 44 # FIXME: valid_values and defaults should probably roll into one object. | 44 # FIXME: valid_values and defaults should probably roll into one object. |
| 45 valid_values = { | 45 valid_values = { |
| 46 'status': ['stable', 'experimental', 'test', 'deprecated'], | 46 'status': ['stable', 'experimental', 'test'], |
| 47 } | 47 } |
| 48 defaults = { | 48 defaults = { |
| 49 'condition': None, | 49 'condition': None, |
| 50 'implied_by': [], | 50 'implied_by': [], |
| 51 'depends_on': [], | 51 'depends_on': [], |
| 52 'custom': False, | 52 'custom': False, |
| 53 'status': None, | 53 'status': None, |
| 54 } | 54 } |
| 55 | 55 |
| 56 _status_aliases = { | |
| 57 'deprecated': 'test', | |
| 58 } | |
| 59 | |
| 60 def __init__(self, in_file_path): | 56 def __init__(self, in_file_path): |
| 61 super(RuntimeFeatureWriter, self).__init__(in_file_path) | 57 super(RuntimeFeatureWriter, self).__init__(in_file_path) |
| 62 self._outputs = {(self.class_name + '.h'): self.generate_header, | 58 self._outputs = {(self.class_name + '.h'): self.generate_header, |
| 63 (self.class_name + '.cpp'): self.generate_implementatio
n, | 59 (self.class_name + '.cpp'): self.generate_implementatio
n, |
| 64 } | 60 } |
| 65 | 61 |
| 66 self._features = self.in_file.name_dictionaries | 62 self._features = self.in_file.name_dictionaries |
| 67 # Make sure the resulting dictionaries have all the keys we expect. | 63 # Make sure the resulting dictionaries have all the keys we expect. |
| 68 for feature in self._features: | 64 for feature in self._features: |
| 69 feature['first_lowered_name'] = lower_first(feature['name']) | 65 feature['first_lowered_name'] = lower_first(feature['name']) |
| 70 feature['status'] = self._status_aliases.get(feature['status'], feat
ure['status']) | |
| 71 # Most features just check their isFooEnabled bool | 66 # Most features just check their isFooEnabled bool |
| 72 # but some depend on or are implied by other bools. | 67 # but some depend on or are implied by other bools. |
| 73 enabled_condition = 'is%sEnabled' % feature['name'] | 68 enabled_condition = 'is%sEnabled' % feature['name'] |
| 74 assert not feature['implied_by'] or not feature['depends_on'], 'Only
one of implied_by and depends_on is allowed' | 69 assert not feature['implied_by'] or not feature['depends_on'], 'Only
one of implied_by and depends_on is allowed' |
| 75 for implied_by_name in feature['implied_by']: | 70 for implied_by_name in feature['implied_by']: |
| 76 enabled_condition += ' || is%sEnabled' % implied_by_name | 71 enabled_condition += ' || is%sEnabled' % implied_by_name |
| 77 for dependant_name in feature['depends_on']: | 72 for dependant_name in feature['depends_on']: |
| 78 enabled_condition += ' && is%sEnabled' % dependant_name | 73 enabled_condition += ' && is%sEnabled' % dependant_name |
| 79 feature['enabled_condition'] = enabled_condition | 74 feature['enabled_condition'] = enabled_condition |
| 80 self._non_custom_features = filter(lambda feature: not feature['custom']
, self._features) | 75 self._non_custom_features = filter(lambda feature: not feature['custom']
, self._features) |
| 81 | 76 |
| 82 def _feature_sets(self): | 77 def _feature_sets(self): |
| 83 # Another way to think of the status levels is as "sets of features" | 78 # Another way to think of the status levels is as "sets of features" |
| 84 # which is how we're referring to them in this generator. | 79 # which is how we're referring to them in this generator. |
| 85 return [status for status in self.valid_values['status'] if status not i
n self._status_aliases] | 80 return list(self.valid_values['status']) |
| 86 | 81 |
| 87 @template_expander.use_jinja(class_name + '.h.tmpl', filters=filters) | 82 @template_expander.use_jinja(class_name + '.h.tmpl', filters=filters) |
| 88 def generate_header(self): | 83 def generate_header(self): |
| 89 return { | 84 return { |
| 90 'features': self._features, | 85 'features': self._features, |
| 91 'feature_sets': self._feature_sets(), | 86 'feature_sets': self._feature_sets(), |
| 92 } | 87 } |
| 93 | 88 |
| 94 @template_expander.use_jinja(class_name + '.cpp.tmpl', filters=filters) | 89 @template_expander.use_jinja(class_name + '.cpp.tmpl', filters=filters) |
| 95 def generate_implementation(self): | 90 def generate_implementation(self): |
| 96 return { | 91 return { |
| 97 'features': self._features, | 92 'features': self._features, |
| 98 'feature_sets': self._feature_sets(), | 93 'feature_sets': self._feature_sets(), |
| 99 } | 94 } |
| 100 | 95 |
| 101 | 96 |
| 102 if __name__ == '__main__': | 97 if __name__ == '__main__': |
| 103 in_generator.Maker(RuntimeFeatureWriter).main(sys.argv) | 98 in_generator.Maker(RuntimeFeatureWriter).main(sys.argv) |
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