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

#!/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.
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# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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import sys

import css_properties
import json5_generator
from name_utilities import lower_first, upper_camel_case
import template_expander


def apply_property_naming_defaults(property_):
    def set_if_none(property_, key, value):
        if property_[key] is None:
            property_[key] = value

    # TODO(shend): Use name_utilities for manipulating names.
    # TODO(shend): Rearrange the code below to separate assignment and set_if_none
    upper_camel = upper_camel_case(property_['name'])
    set_if_none(property_, 'name_for_methods', upper_camel.replace('Webkit', ''))
    name = property_['name_for_methods']
    simple_type_name = str(property_['type_name']).split('::')[-1]
    set_if_none(property_, 'type_name', 'E' + name)
    set_if_none(property_, 'getter', name if simple_type_name != name else 'Get' + name)
    set_if_none(property_, 'setter', 'Set' + name)
    set_if_none(property_, 'inherited', False)
    set_if_none(property_, 'initial', 'Initial' + name)

    if property_['custom_all']:
        property_['custom_initial'] = True
        property_['custom_inherit'] = True
        property_['custom_value'] = True
    if property_['inherited']:
        property_['is_inherited_setter'] = 'Set' + name + 'IsInherited'
    property_['should_declare_functions'] = not property_['use_handlers_for'] and not property_['longhands'] \
        and not property_['direction_aware'] and not property_['builder_skip'] \
        and property_['is_property']


class StyleBuilderWriter(css_properties.CSSProperties):
    filters = {
        'lower_first': lower_first,
    }

    def __init__(self, json5_file_path):
        super(StyleBuilderWriter, self).__init__(json5_file_path)
        self._outputs = {('StyleBuilderFunctions.h'): self.generate_style_builder_functions_h,
                         ('StyleBuilderFunctions.cpp'): self.generate_style_builder_functions_cpp,
                         ('StyleBuilder.cpp'): self.generate_style_builder,
                        }

        for property in self._properties.values():
            apply_property_naming_defaults(property)

    @template_expander.use_jinja('StyleBuilderFunctions.h.tmpl',
                                 filters=filters)
    def generate_style_builder_functions_h(self):
        return {
            'properties': self._properties,
        }

    @template_expander.use_jinja('StyleBuilderFunctions.cpp.tmpl',
                                 filters=filters)
    def generate_style_builder_functions_cpp(self):
        return {
            'properties': self._properties,
        }

    @template_expander.use_jinja('StyleBuilder.cpp.tmpl', filters=filters)
    def generate_style_builder(self):
        return {
            'properties': self._properties,
        }


if __name__ == '__main__':
    json5_generator.Maker(StyleBuilderWriter).main()