"""Random-search Proposer component — the SEARCH/REPLACE diff operator."""
from __future__ import annotations

from ...components.proposer import LLMProposer, WholeLineDiff


class RandomProposer(LLMProposer):
    """One LLM call -> a SEARCH/REPLACE diff applied to the sampled parent, with no-op detection.

    Diffs apply by whole-line matching (:class:`~galapagos.components.proposer.WholeLineDiff`); a
    response that yields no matching diff block is a no-op that is retried/discarded rather than
    accepted as a full rewrite. The variation operator is deliberately identical to the greedy
    baseline's, so that random vs. elitist *selection* is the only independent variable.
    """

    edit_strategy = WholeLineDiff()