chromium/src/third_party/blink/renderer/build/scripts/make_element_lookup_trie.py

#!/usr/bin/env python
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import sys

from blinkbuild.name_style_converter import NameStyleConverter
import json5_generator
import trie_builder
import template_expander


class ElementLookupTrieWriter(json5_generator.Writer):
    # FIXME: Inherit all these from somewhere.
    default_parameters = {
        'JSInterfaceName': {},
        'constructorNeedsCreateElementFlags': {},
        'interfaceHeaderDir': {},
        'interfaceName': {},
        'noConstructor': {},
        'noTypeHelpers': {},
        'runtimeEnabled': {},
    }
    default_metadata = {
        'attrsNullNamespace': None,
        'export': '',
        'fallbackInterfaceName': '',
        'fallbackJSInterfaceName': '',
        'namespace': '',
        'namespacePrefix': '',
        'namespaceURI': '',
    }
    filters = {
        'symbol':
        lambda symbol: 'k' + NameStyleConverter(symbol).to_upper_camel_case()
    }

    def __init__(self, json5_file_paths, output_dir):
        super(ElementLookupTrieWriter, self).__init__(json5_file_paths,
                                                      output_dir)
        self._tags = {}
        for entry in self.json5_file.name_dictionaries:
            self._tags[entry['name'].original] = entry['name'].original
        self._namespace = self.json5_file.metadata['namespace'].strip('"')
        basename = self._namespace.lower() + '_element_lookup_trie'
        self._outputs = {
            (basename + '.h'): self.generate_header,
            (basename + '.cc'): self.generate_implementation,
        }

    @template_expander.use_jinja('templates/element_lookup_trie.h.tmpl')
    def generate_header(self):
        return {
            'input_files': self._input_files,
            'namespace': self._namespace,
        }

    @template_expander.use_jinja(
        'templates/element_lookup_trie.cc.tmpl', filters=filters)
    def generate_implementation(self):
        return {
            'input_files': self._input_files,
            'namespace': self._namespace,
            'length_tries': trie_builder.trie_list_by_str_length(self._tags)
        }


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