3
•m¯\&  ã               @   sJ   d dl mZ d dlmZ G dd„ deƒZG dd„ dƒZdd„ Zd	d
„ ZdS )é    )Údivision)Úwrapsc               @   s    e Zd ZdZdd„ Zdd„ ZdS )ÚLogomakerErrora  
    Class used by Logomaker to handle errors.

    parameters
    ----------

    message: (str)
        The message passed to check(). This only gets passed to the
        LogomakerError constructor when the condition passed to check() is
        False.
    c             C   s
   || _ d S )N)Úmessage)Úselfr   © r   ú%../../logomaker/src/error_handling.pyÚ__init__   s    zLogomakerError.__init__c             C   s   | j S )N)r   )r   r   r   r   Ú__str__   s    zLogomakerError.__str__N)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r	   r
   r   r   r   r   r      s   r   c               @   s   e Zd ZdZdd„ ZdS )ÚDebugResultz0
    Container class for debugging results.
    c             C   s   || _ || _d S )N)ÚresultÚmistake)r   r   r   r   r   r   r	      s    zDebugResult.__init__N)r   r   r   r   r	   r   r   r   r   r      s   r   c             C   s   | st |ƒ‚dS )ap  
    Checks a condition; raises a LogomakerError with message if condition
    evaluates to False

    parameters
    ----------

    condition: (bool)
        A condition that, if false, halts Logomaker execution and raises a
        clean error to user

    message: (str)
        The string to show user if condition is False.

    returns
    -------
    None
    N)r   )Ú	conditionr   r   r   r   Úcheck"   s    r   c                s   t ˆ ƒ‡ fdd„ƒ}|S )aã  
    Decorator function to handle Logomaker errors.

    This decorator allows the user to pass the keyword argument
    'should_fail' to any wrapped function.

    If should_fail is None (or is not set by user), the function executes
    normally, and can be called as

        result = func(*args, **kwargs)

    In particular, Python execution will halt if any errors are raised.

    However, if the user specifies should_fail=True or should_fail=False, then
    Python will not halt even in the presence of an error. Moreover, the
    function will return a tuple, e.g.,

        result, mistake = func(*args, should_fail=True, **kwargs)

    with mistake flagging whether or not the function failed or succeeded
    as expected.
    c                 sò   |j dd ƒ}t|dkd| ƒ d }d }y:ˆ | |Ž}|dkrHtdƒ d}n|dkr^tdƒ d}n W n^ tk
r¾ } zB|dkrŽtd|jƒ ƒ d}n |dkrªtd|jƒ ƒ d}n|‚W Y d d }~X nX |d krÌ|S ˆ jd	krä|| d
 _d S t||ƒS d S )NÚshould_failTFz+FATAL: should_fail = %s is not bool or NonezUNEXPECTED SUCCESS.zExpected success.zExpected error:zUNEXPECTED ERROR:r	   r   )TFN)Úpopr   Úprintr   r
   r   r   r   )ÚargsÚkwargsr   r   r   Úe)Úfuncr   r   Úwrapped_funcS   s<    





z#handle_errors.<locals>.wrapped_func)r   )r   r   r   )r   r   Úhandle_errors;   s    Kr   N)	Ú
__future__r   Ú	functoolsr   Ú	Exceptionr   r   r   r   r   r   r   r   Ú<module>   s
   	