Function _generate_traversal_dispatch

lib/sqlalchemy/sql/visitors.py:569–578

()

def _generate_traversal_dispatch() -> None:
    lookup = _dispatch_lookup

    for sym in InternalTraversal:
        key = sym.name
        if key.startswith("dp_"):
            visit_key = key.replace("dp_", "visit_")
            sym_name = sym.value
            assert sym_name not in lookup, sym_name
            lookup[sym] = lookup[sym_name] = visit_key


_dispatch_lookup = HasTraversalDispatch._dispatch_lookup