src/third_party/WebKit/Source/build/scripts/make_style_builder.py

   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 re
  31 import sys
  32
  33 import in_generator
  34 import template_expander
  35
  36
  37 class StyleBuilderWriter(in_generator.Writer):
  38     class_name = 'StyleBuilder'
  39
  40     valid_values = {
  41         'svg': [True, False],
  42         'custom_all': [True, False],
  43         'custom_initial': [True, False],
  44         'custom_inherit': [True, False],
  45         'custom_value': [True, False],
  46     }
  47     defaults = {
  48         'condition': None,
  49         'name_for_methods': None,
  50         'use_handlers_for': None,
  51         'svg': False,
  52         'converter': None,
  53 # These depend on property name by default
  54         'type_name': None,
  55         'getter': None,
  56         'setter': None,
  57         'initial': None,
  58 # Setting these stops default handlers being generated
  59 # Setting custom_all is the same as setting the other three
  60         'custom_all': False,
  61         'custom_initial': False,
  62         'custom_inherit': False,
  63         'custom_value': False,
  64     }
  65
  66     def __init__(self, in_files):
  67         super(StyleBuilderWriter, self).__init__(in_files)
  68         self._outputs = {("StyleBuilderFunctions.h"): self.generate_style_builder_functions_h,
  69                          ("StyleBuilderFunctions.cpp"): self.generate_style_builder_functions_cpp,
  70                          ("StyleBuilder.cpp"): self.generate_style_builder,
  71                         }
  72
  73         self._properties = self.in_file.name_dictionaries
  74
  75         def set_if_none(property, key, value):
  76             if property[key] is None:
  77                 property[key] = value
  78
  79         for property in self._properties:
  80             cc = self._camelcase_property_name(property["name"])
  81             property["property_id"] = "CSSProperty" + cc
  82             cc = property["name_for_methods"] or cc.replace("Webkit", "")
  83             property["camel_case_name"] = cc
  84             set_if_none(property, "type_name", "E" + cc)
  85             set_if_none(property, "getter", self._lower_first(cc))
  86             set_if_none(property, "setter", "set" + cc)
  87             set_if_none(property, "initial", "initial" + cc)
  88             if property["custom_all"]:
  89                 property["custom_initial"] = True
  90                 property["custom_inherit"] = True
  91                 property["custom_value"] = True
  92
  93         self._properties = dict((property["property_id"], property) for property in self._properties)
  94
  95 # FIXME: some of these might be better in a utils file
  96     @staticmethod
  97     def _camelcase_property_name(property_name):
  98         return re.sub(r'(^[^-])|-(.)', lambda match: (match.group(1) or match.group(2)).upper(), property_name)
  99
 100     @staticmethod
 101     def _lower_first(s):
 102         return s[0].lower() + s[1:]
 103
 104     @staticmethod
 105     def _upper_first(s):
 106         return s[0].upper() + s[1:]
 107
 108     @template_expander.use_jinja("StyleBuilderFunctions.h.tmpl")
 109     def generate_style_builder_functions_h(self):
 110         return {
 111             "properties": self._properties,
 112         }
 113
 114     @template_expander.use_jinja("StyleBuilderFunctions.cpp.tmpl")
 115     def generate_style_builder_functions_cpp(self):
 116         return {
 117             "properties": self._properties,
 118         }
 119
 120     @template_expander.use_jinja("StyleBuilder.cpp.tmpl")
 121     def generate_style_builder(self):
 122         return {
 123             "properties": self._properties,
 124         }
 125
 126
 127 if __name__ == "__main__":
 128     in_generator.Maker(StyleBuilderWriter).main(sys.argv)