meta_key.py

from typing import Tuple, Union, Optional

from meta_row import MetaRow


class MetaKey:
    def __init__(self,
                 meta_file_path: Union[MetaRow, str],
                 line_start: Optional[int] = None,
                 line_end: Optional[int] = None):
        if isinstance(meta_file_path, MetaRow):
            self.key = (meta_file_path.FilePath, meta_file_path.LineStart, meta_file_path.LineEnd)
        elif isinstance(meta_file_path, str) and isinstance(line_start, int) and isinstance(line_end, int):
            if line_start > line_end:
                raise RuntimeError(f"Wrong start-end values {line_start} > {line_end}")
            self.key = (meta_file_path, line_start, line_end)
        else:
            raise RuntimeError(f"Wrong values {meta_file_path}, {line_start}, {line_end}")

    def __hash__(self):
        return hash(self.key)

    def __eq__(self, other: 'MetaKey'):
        return self.key == other.key

    def __ne__(self, other: 'MetaKey'):
        return not (self == other)