"""过渡期：把 IndicatorStore 挂到 KLU 属性上，兼容旧代码读取 klu.ema52 等。"""

from __future__ import annotations

from typing import Iterable

from .store import IndicatorStore


def attach_indicators_for_compat(klu_list: Iterable, store: IndicatorStore) -> None:
    """将指标写入 KLU（deprecated：新代码应通过 store.get(idx, name) 查询）。"""
    for klu in klu_list:
        idx = getattr(klu, "idx", None)
        if idx is None:
            continue
        row = store.row(idx)
        if row is None:
            continue
        if hasattr(klu, "set_indicators"):
            klu.set_indicators(row)