B "ec@sdZddlmZmZddlmZmZddlmZddl m Z ddl m Z m Z dd d d d d gZGdd d eZGdd d edZGdddeZGdd d eZGdd d eZGdddeZGdd d eZdS)zV Input validation for a `Buffer`. (Validators will be called before accepting input.) )ABCMetaabstractmethod)CallableOptional)run_in_executor_with_context)Document) FilterOrBool to_filterConditionalValidatorValidationError ValidatorThreadedValidatorDummyValidatorDynamicValidatorcs:eZdZdZd eeddfdd Zedd d ZZS) r z Error raised by :meth:`.Validator.validate`. :param cursor_position: The cursor position where the error occurred. :param message: Text. rN)cursor_positionmessagereturncst|||_||_dS)N)super__init__rr)selfrr) __class__8lib/python3.7/site-packages/prompt_toolkit/validation.pyrs zValidationError.__init__)rcCsd|jj|j|jS)Nz&{}(cursor_position={!r}, message={!r}))formatr__name__rr)rrrr__repr__$szValidationError.__repr__)rr) r __module__ __qualname____doc__intstrrr __classcell__rr)rrr sc@sXeZdZdZeeddddZeddddZed e e ge fe e dd d d Z dS)r a Abstract base class for an input validator. A validator is typically created in one of the following two ways: - Either by overriding this class and implementing the `validate` method. - Or by passing a callable to `Validator.from_callable`. If the validation takes some time and needs to happen in a background thread, this can be wrapped in a :class:`.ThreadedValidator`. N)documentrcCsdS)z Validate the input. If invalid, this should raise a :class:`.ValidationError`. :param document: :class:`~prompt_toolkit.document.Document` instance. Nr)rr$rrrvalidate9szValidator.validatecs*y||Wntk r$YnXdS)z Return a `Future` which is set when the validation is ready. This function can be overloaded in order to provide an asynchronous implementation. N)r%r )rr$rrrvalidate_asyncCszValidator.validate_async Invalid inputF) validate_func error_messagemove_cursor_to_endrcCs t|||S)aF Create a validator from a simple validate callable. E.g.: .. code:: python def is_valid(text): return text in ['hello', 'world'] Validator.from_callable(is_valid, error_message='Invalid input') :param validate_func: Callable that takes the input string, and returns `True` if the input is valid input. :param error_message: Message to be displayed if the input is invalid. :param move_cursor_to_end: Move the cursor to the end of the input, if the input is invalid. )_ValidatorFromCallable)clsr(r)r*rrr from_callableNszValidator.from_callable)r'F) rrrr rrr%r& classmethodrr"boolr-rrrrr ,s   ) metaclassc@sLeZdZdZeegefeeddddZedddZe dd d d Z dS) r+z0 Validate input from a simple callable. N)funcr)r*rcCs||_||_||_dS)N)r1r)r*)rr1r)r*rrrrlsz_ValidatorFromCallable.__init__)rcCsd|jdS)NzValidator.from_callable())r1)rrrrrtsz_ValidatorFromCallable.__repr__)r$rcCs4||js0|jrt|j}nd}t||jddS)Nr)rr)r1textr*lenr r))rr$indexrrrr%ws   z_ValidatorFromCallable.validate) rrrr rr"r/rrrr%rrrrr+gs r+c@s@eZdZdZeddddZeddddZeddd d ZdS) rz Wrapper that runs input validation in a thread. (Use this to prevent the user interface from becoming unresponsive if the input validation takes too much time.) N) validatorrcCs ||_dS)N)r6)rr6rrrrszThreadedValidator.__init__)r$rcCs|j|dS)N)r6r%)rr$rrrr%szThreadedValidator.validatecs&ddfdd }t|IdHdS)z: Run the `validate` function in a thread. N)rcs S)N)r%r)r$rrrrun_validation_threadsz?ThreadedValidator.validate_async..run_validation_thread)r)rr$r7r)r$rrr&sz ThreadedValidator.validate_async) rrrr r rrr%r&rrrrrsc@s eZdZdZeddddZdS)rz1 Validator class that accepts any input. N)r$rcCsdS)Nr)rr$rrrr%szDummyValidator.validate)rrrr rr%rrrrrsc@s2eZdZdZeeddddZeddddZdS) r zq Validator that can be switched on/off according to a filter. (This wraps around another validator.) N)r6filterrcCs||_t||_dS)N)r6r r8)rr6r8rrrrszConditionalValidator.__init__)r$rcCs|r|j|dS)N)r8r6r%)rr$rrrr%szConditionalValidator.validate) rrrr r r rrr%rrrrr sc@sLeZdZdZegeefddddZeddddZ eddd d Z dS) rz Validator class that can dynamically returns any Validator. :param get_validator: Callable that returns a :class:`.Validator` instance. N) get_validatorrcCs ||_dS)N)r9)rr9rrrrszDynamicValidator.__init__)r$rcCs|p t}||dS)N)r9rr%)rr$r6rrrr%szDynamicValidator.validatecs"|p t}||IdHdS)N)r9rr&)rr$r6rrrr&szDynamicValidator.validate_async) rrrr rrr rrr%r&rrrrrsN)r abcrrtypingrrZprompt_toolkit.eventlooprr$rfiltersr r __all__ Exceptionr r r+rrr rrrrrs$  ;