# Copyright 2020 Google LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


from typing import List, NamedTuple, Tuple


class PolyglotDriftData(NamedTuple):
    """Struct for storing snippet metadata
    This object stores language-agnostic ("polyglot")
    snippet data extracted from snippet source files
    for use by the second-stage "polyglot" parser.
    """
    source_path: str
    start_line: int
    end_line: int
    parser: str
    region_tags: List[str] = []
    test_methods: List[Tuple[str, str]] = []
    children: List[str] = []

    @classmethod
    def from_json_dict(cls, json_dict):
        region_tags = json_dict.get('region_tags', [])
        start_line = json_dict.get('start_line', None)
        end_line = json_dict.get('end_line', None)
        test_methods = json_dict.get('test_methods', [])
        source_path = json_dict.get('source_path', [])
        children = json_dict.get('children', [])
        parser = json_dict.get('parser', None)

        return cls(
            source_path,
            start_line,
            end_line,
            parser,
            region_tags,
            test_methods,
            children
        )

update polyglot_drift_data object