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1 #!/usr/bin/env python | |
2 # Copyright (C) 2013 Google Inc. All rights reserved. | |
3 # | |
4 # Redistribution and use in source and binary forms, with or without | |
5 # modification, are permitted provided that the following conditions are | |
6 # met: | |
7 # | |
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 | |
13 # distribution. | |
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. | |
17 # | |
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. | |
29 | |
30 import os.path | |
31 import sys | |
32 | |
33 from in_file import InFile | |
34 import in_generator | |
35 from name_utilities import lower_first | |
36 import template_expander | |
37 | |
38 | |
39 class RuntimeFeatureWriter(in_generator.Writer): | |
40 class_name = 'RuntimeEnabledFeatures' | |
41 | |
42 # FIXME: valid_values and defaults should probably roll into one object. | |
43 valid_values = { | |
44 'status': ['stable', 'experimental', 'test'], | |
45 } | |
46 defaults = { | |
47 'condition' : None, | |
48 'depends_on' : [], | |
49 'custom': False, | |
50 'status': None, | |
51 } | |
52 | |
53 def __init__(self, in_file_path, enabled_conditions): | |
54 super(RuntimeFeatureWriter, self).__init__(in_file_path, enabled_conditi
ons) | |
55 self._outputs = {(self.class_name + ".h"): self.generate_header, | |
56 (self.class_name + ".cpp"): self.generate_implementatio
n, | |
57 } | |
58 | |
59 self._features = self.in_file.name_dictionaries | |
60 # Make sure the resulting dictionaries have all the keys we expect. | |
61 for feature in self._features: | |
62 feature['first_lowered_name'] = lower_first(feature['name']) | |
63 # Most features just check their isFooEnabled bool | |
64 # but some depend on more than one bool. | |
65 enabled_condition = "is%sEnabled" % feature['name'] | |
66 for dependant_name in feature['depends_on']: | |
67 enabled_condition += " && is%sEnabled" % dependant_name | |
68 feature['enabled_condition'] = enabled_condition | |
69 self._non_custom_features = filter(lambda feature: not feature['custom']
, self._features) | |
70 | |
71 def _feature_sets(self): | |
72 # Another way to think of the status levels is as "sets of features" | |
73 # which is how we're referring to them in this generator. | |
74 return self.valid_values['status'] | |
75 | |
76 @template_expander.use_jinja(class_name + ".h.tmpl") | |
77 def generate_header(self): | |
78 return { | |
79 'features': self._features, | |
80 'feature_sets': self._feature_sets(), | |
81 } | |
82 | |
83 @template_expander.use_jinja(class_name + ".cpp.tmpl") | |
84 def generate_implementation(self): | |
85 return { | |
86 'features': self._features, | |
87 'feature_sets': self._feature_sets(), | |
88 } | |
89 | |
90 | |
91 if __name__ == "__main__": | |
92 in_generator.Maker(RuntimeFeatureWriter).main(sys.argv) | |
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