Method _common_prefix_len

examples/server/server.py:822–831

(
        label: Sequence[int],
        tokens: Sequence[int],
        offset: int,
    )

    @staticmethod
    def _common_prefix_len(
        label: Sequence[int],
        tokens: Sequence[int],
        offset: int,
    ) -> int:
        limit = min(len(label), len(tokens) - offset)
        match_len = 0
        while match_len < limit and label[match_len] == tokens[offset + match_len]:
            match_len += 1
        return match_len

    def _split_child(
        self,