a [g@sdZddlmZddlZddlmZddlmZddlmZddlm Z ddlm Z dd lm Z dd lm Z dd lm Z dd lmZdd lmZddlmZddlmZddlmZededefdZGdddeZGdddeZGdddZdS)z9State tracking utilities used by :class:`_orm.Session`. ) annotationsN)Enum)Any)Callable)cast)Iterator)NoReturn)Optional)Tuple)TypeVar)Union)exc)util)Literal_F.)boundc@s eZdZdS)_StateChangeStateN)__name__ __module__ __qualname__rrj/var/www/html/cobodadashboardai.evdpl.com/venv/lib/python3.9/site-packages/sqlalchemy/orm/state_changes.pyr!src@seZdZdZdZdZdS)_StateChangeStatesr N)rrrANY NO_CHANGECHANGE_IN_PROGRESSrrrrr%src@sxeZdZUdZejZded<ejZ ded<dZ ded<ddd d d d Z e d dddddZ ejdddddZdS) _StateChangea!Supplies state assertion decorators. The current use case is for the :class:`_orm.SessionTransaction` class. The :class:`_StateChange` class itself is agnostic of the :class:`_orm.SessionTransaction` class so could in theory be generalized for other systems as well. r _next_state_stateNzOptional[Callable[..., Any]] _current_fnstrr)operation_namestatereturncCstjd|d|dddS)NzCan't run operation 'z()' when Session is in state iscecode)sa_excIllegalStateChangeError)selfr$r%rrr_raise_for_prerequisite_state9s z*_StateChange._raise_for_prerequisite_statezEUnion[Literal[_StateChangeStates.ANY], Tuple[_StateChangeState, ...]]zCallable[[_F], _F])prerequisite_statesmoves_tor&csT|s Jd|tjutd|tjutjddddddfdd }|S)aMethod decorator declaring valid states. :param prerequisite_states: sequence of acceptable prerequisite states. Can be the single constant _State.ANY to indicate no prerequisite state :param moves_to: the expected state at the end of the method, assuming no exceptions raised. Can be the constant _State.NO_CHANGE to indicate state should not change at the end of the method. zno prequisite states sentzTuple[_StateChangeState, ...]rr)fnr,argkwr&c s|j}r |vr ||j||j}|j}r4n|}|tjurr||ur|r|tjtjfvrt j d|jd|jdddn"t j d|jdd|dd||_tj|_zz||g|Ri|}WnYn0|j|ur|W||_||_S|j|ur.t j d|jd d ddnL|r\t j d |jd |jd |jddnt j d|jd |jddW||_||_n||_||_0dS)NzMethod 'z"()' can't be called here; method 'zN()' is already in progress and this would cause an unexpected state change to r'r(zCant run operation 'z()' here; will move to state z where we are expecting z()' failed to change state to z as expectedzWhile method 'z()' was running, method 'z)()' caused an unexpected state change to ) r!r-rr r"rrrrr*r+) r0r,r1r2Z current_state next_stateZ existing_fnZ expect_stateZ ret_valueZexpect_state_changeZhas_prerequisite_statesr/Zprerequisite_state_collectionrr_go_s         z(_StateChange.declare_states.._go)rrrrr decorator)clsr.r/r5rr4rdeclare_statesBs  "Mz_StateChange.declare_statesz Iterator[Any])expectedr&ccsp|jtjusJd||_zFz dVWnYn"0|j|urVtjd|jddWtj|_n tj|_0dS)zxcalled within a method that changes states. method must also use the ``@declare_states()`` decorator. zAUnexpected call to _expect_state outside of state-changing methodNzUnexpected state change to r'r()r rrr!r*r+)r,r9rrr _expect_states   z_StateChange._expect_state)rrr__doc__rrr __annotations__rr!r"r- classmethodr8 contextlibcontextmanagerr:rrrrr+s    lr)r; __future__rr>enumrtypingrrrrrr r r r rr*rZ util.typingrrrrrrrrrs&