a
    If                     @   s   d dl Z d dlmZmZ g dZdd Zdd Zdd	 Zd
d Zdd Z	e
 ZG dd dZG dd deZdZG dd deZG dd dedZG dd deeZdd ZG dd deZG dd deeZdd  Zd!d" Zd#d$ ZdS )%    N)MappingProxyTypeDynamicClassAttribute)EnumMetaEnumIntEnumFlagIntFlagautouniquec                 C   s   t | dpt | dpt | dS )z?
    Returns True if obj is a descriptor, False otherwise.
    __get____set__
__delete__)hasattr)obj r   lib/python3.9/enum.py_is_descriptor   s
    
r   c                 C   sL   t | dkoJ| dd | dd   ko.dkn  oJ| d dkoJ| d dkS )z=
    Returns True if a __dunder__ name, False otherwise.
       N   ___lennamer   r   r   
_is_dunder   s    &

r   c                 C   sL   t | dkoJ| d | d   ko&dkn  oJ| dd dkoJ| dd dkS )z;
    Returns True if a _sunder_ name, False otherwise.
    r   r   r      r   r   r   r   r   r   
_is_sunder!   s    r    c                 C   sT   d| f }t |dkrL||rL|t | dkrL|d dksH|d dkrLdS dS d S )Nz_%s__   r   r   r   TF)r   
startswith)cls_namer   patternr   r   r   _is_private,   s    



r%   c                 C   s   dd }|| _ d| _dS )z,
    Make the given class un-picklable.
    c                 S   s   t d|  d S )Nz%r cannot be pickled)	TypeErrorselfprotor   r   r   _break_on_call_reduce=   s    z6_make_class_unpicklable.<locals>._break_on_call_reducez	<unknown>N)__reduce_ex__
__module__)clsr*   r   r   r   _make_class_unpicklable9   s    r.   c                   @   s   e Zd ZdZeZdS )r	   zP
    Instances are replaced with an appropriate value in Enum class suites.
    N)__name__r,   __qualname____doc__
_auto_nullvaluer   r   r   r   r	   C   s   r	   c                       s,   e Zd ZdZ fddZ fddZ  ZS )	_EnumDictz
    Track enum member order and ensure member names are not reused.

    EnumMeta will use the names found in self._member_names as the
    enumeration member names.
    c                    s&   t    g | _g | _g | _d| _d S )NF)super__init___member_names_last_values_ignore_auto_calledr(   	__class__r   r   r6   Q   s
    
z_EnumDict.__init__c                    s  t | j|r*ddl}|jd|f tdd t|r|dvrBtd|dkrf| jrXtd	t	| d
| nV|dkrt
|tr|dd }nt|}|| _t|t| j@ }|rtd|f nt|r|dkrd}n|| jv rtd| n|| jv rnt|s~|| v r td|| | f t
|trf|jtkr`| |dt| j| jdd |_d| _|j}| j| | j| t || dS )z
        Changes anything not dundered or not a descriptor.

        If an enum member name is used twice, an error is raised; duplicate
        values are not checked for.

        Single underscore (sunder) names are reserved.
        r   Nz@private variables, such as %r, will be normal attributes in 3.10r   )
stacklevel)_order__create_pseudo_member__generate_next_value_	_missing__ignore_z(_names_ are reserved for future Enum userA   z4_generate_next_value_ must be defined before members_generate_next_valuerC   , z-_ignore_ cannot specify already set names: %r	__order__r?   zAttempted to reuse key: %rz%r already defined as: %rr   T)r%   	_cls_namewarningswarnDeprecationWarningr    
ValueErrorr:   r&   setattr
isinstancestrreplacesplitlistr9   setr7   r   r   r	   r3   r2   rD   r   r8   appendr5   __setitem__)r(   keyr3   rI   alreadyr<   r   r   rU   X   sf    	




z_EnumDict.__setitem__)r/   r,   r0   r1   r6   rU   __classcell__r   r   r<   r   r4   J   s   r4   c                       s   e Zd ZdZedd Z fddZdd Zd-dddd	d
ddZdd Z	 fddZ
dd Zdd Zdd Zdd Zdd Zedd Zdd Zdd  Z fd!d"Zdddd	d
d#d$Zd.d%d&Zed'd( Zed)d* Zed+d, Z  ZS )/r   z
    Metaclass for Enum
    c                 K   sD   |  || t }||_| ||\}}|d ur@t|dd |d< |S )NrA   )_check_for_existing_membersr4   rH   _get_mixins_getattr)metaclsr-   baseskwds	enum_dictmember_type
first_enumr   r   r   __prepare__   s    zEnumMeta.__prepare__c              	      s   dg d d }|D ]}|d  q| ||\}| |\}}	}
fddjD }jD ]
}|= qndd }t|ddh@ }|rtdd	|d	vrd
d	< t
 j| ||fi |}g |_i |_|_dd | D }i |_dvr̈turd}tfdd|D sdv rFt| nd }|D ]n}|jD ]P  tu rlqXn:t fdd|D rd} qnd jv rXd} qqX|d urN qqN|rt| jD ]*}|| }t|ts|f}n|}tu r|f}|
s*||}t|dsb||_n8||g|R  }t|dsbtu rX||_n
| |_|j}||_||_|j|  |j D ]"\}}|j|jkr|} qq|j| ||vrt||| ||j|< z||j|< W n ty   Y n0 qdD ]V}|v rqt ||}t |d }t ||d }|d ur||u rt||| qt!d urz|	rr||_"t!j|_|d urt|t#r|$dd% }||jkrtd|S )NrC   c                    s   i | ]}| | qS r   r   ).0k)	classdictr   r   
<dictcomp>       z$EnumMeta.__new__.<locals>.<dictcomp>r?   mro zInvalid enum member name: {0}rE   r1   zAn enumeration.c                 S   s.   h | ]&}|j  D ]\}}t|tr|qqS r   )__dict__itemsrN   r   )rc   crd   vr   r   r   	<setcomp>   s   
z#EnumMeta.__new__.<locals>.<setcomp>r+   )__getnewargs_ex____getnewargs__r+   
__reduce__c                 3   s   | ]}| j v V  qd S Nrj   rc   m)r`   r   r   	<genexpr>   rg   z#EnumMeta.__new__.<locals>.<genexpr>__new__c                 3   s   | ]}| j v V  qd S rr   rs   rt   )baser   r   rv     rg   FT_value_)__repr____str__
__format__r+   rF   z#member order does not match _order_)&
setdefaultrT   poprZ   
_find_new_r7   rS   rL   formatjoinr5   rw   _member_names__member_map__member_type_rh   _value2member_map_objectanyr.   __mro__rj   rN   tupler   ry   _name___objclass__r6   rk   rM   r&   r[   r   __new_member__rO   rP   rQ   )r\   r-   r]   re   r^   ignorerV   ra   rw   save_newuse_argsenum_membersr   r?   invalid_names
enum_classdynamic_attributesmethodssabotagechainmember_namer3   argsenum_membercanonical_memberclass_method
obj_methodenum_methodr<   )rx   re   r`   r   rw      s    






















zEnumMeta.__new__c                 C   s   dS )z6
        classes/types should always be True.
        Tr   r;   r   r   r   __bool__`  s    zEnumMeta.__bool__Nr   modulequalnametypestartc                C   s*   |du r|  | |S | j||||||dS )a!  
        Either returns an existing member, or creates a new enum class.

        This method is used both when an enum class is given a value to match
        to an enumeration member (i.e. Color(3)) and for the functional API
        (i.e. Color = Enum('Color', names='RED GREEN BLUE')).

        When used for the functional API:

        `value` will be the name of the new class.

        `names` should be either a string of white-space/comma delimited names
        (values will start at `start`), or an iterator/mapping of name, value pairs.

        `module` should be set to the module this class is being created in;
        if it is not set, an attempt to find that module will be made, but if
        it fails the class will not be picklable.

        `qualname` should be set to the actual location this class can be found
        at in its module; by default it is set to the global scope.  If this is
        not correct, unpickling will fail in some circumstances.

        `type`, if set, will be mixed in as the first base class.
        Nr   )rw   _create_)r-   r3   namesr   r   r   r   r   r   r   __call__f  s    zEnumMeta.__call__c                 C   s:   t |ts$tdt|j| jjf t || o8|j| jv S )N3unsupported operand type(s) for 'in': '%s' and '%s')rN   r   r&   r   r0   r=   r   r   )r-   memberr   r   r   __contains__  s    
zEnumMeta.__contains__c                    s(   || j v rtd| j t | d S )Nz%s: cannot delete Enum member.)r   AttributeErrorr/   r5   __delattr__)r-   attrr<   r   r   r     s    
zEnumMeta.__delattr__c                 C   s   g d| j  S )N)r=   r1   __members__r,   r   r;   r   r   r   __dir__  s    zEnumMeta.__dir__c                 C   s>   t |rt|z| j| W S  ty8   t|dY n0 dS )a=  
        Return the enum member matching `name`

        We use __getattr__ instead of descriptors or inserting into the enum
        class' __dict__ in order to support `name` and `value` being both
        properties for enum members (which live in the class' __dict__) and
        enum members themselves.
        N)r   r   r   KeyErrorr-   r   r   r   r   __getattr__  s    	zEnumMeta.__getattr__c                 C   s
   | j | S rr   r   r   r   r   r   __getitem__  s    zEnumMeta.__getitem__c                    s    fdd j D S )z6
        Returns members in definition order.
        c                 3   s   | ]} j | V  qd S rr   r   rc   r   r-   r   r   rv     rg   z$EnumMeta.__iter__.<locals>.<genexpr>r   r   r   r   r   __iter__  s    zEnumMeta.__iter__c                 C   s
   t | jS rr   )r   r   r   r   r   r   __len__  s    zEnumMeta.__len__c                 C   s
   t | jS )z
        Returns a mapping of member name->value.

        This mapping lists all enum members, including aliases. Note that this
        is a read-only view of the internal mapping.
        )r   r   r   r   r   r   r     s    zEnumMeta.__members__c                 C   s
   d| j  S )Nz	<enum %r>)r/   r   r   r   r   rz     s    zEnumMeta.__repr__c                    s    fddt  jD S )z>
        Returns members in reverse definition order.
        c                 3   s   | ]} j | V  qd S rr   r   r   r   r   r   rv     rg   z(EnumMeta.__reversed__.<locals>.<genexpr>)reversedr   r   r   r   r   __reversed__  s    zEnumMeta.__reversed__c                    s0   | j di }||v rtdt || dS )a  
        Block attempts to reassign Enum members.

        A simple assignment to the class namespace only changes one of the
        several possible ways to get an Enum member from the Enum class,
        resulting in an inconsistent Enumeration.
        r   zCannot reassign members.N)rj   getr   r5   __setattr__)r-   r   r3   
member_mapr<   r   r   r     s    zEnumMeta.__setattr__c             
   C   sn  | j }|du r| fn|| f}| | |\}	}
|||}t|trR|dd }t|ttfr|rt|d tr|g  }}g }t	|D ]8\}}|

||||dd }|| |||f q|D ].}t|tr|||  }}n|\}}|||< q|||||}|du r@ztdjd }W n tttfy>   Y n0 |du rTt| n||_|durj||_|S )a  
        Convenience method to create a new Enum class.

        `names` can be:

        * A string containing member names, separated either with spaces or
          commas.  Values are incremented by 1 from `start`.
        * An iterable of member names.  Values are incremented by 1 from `start`.
        * An iterable of (member name, value) pairs.
        * A mapping of member name -> value pairs.
        NrE   rF   r   r   r/   )r=   rZ   rb   rN   rO   rP   rQ   r   rR   	enumeraterA   rT   rw   sys	_getframe	f_globalsr   rL   r   r.   r,   r0   )r-   
class_namer   r   r   r   r   r\   r]   r   ra   re   original_nameslast_valuescountr   r3   itemr   member_valuer   r   r   r   r     s<    
 







zEnumMeta._create_c                    s   t tj| }|rt |}n|} fdd| D }z|jdd d W n" tyl   |jdd d Y n0 | |||d} t| _|| j	 | ||< | S )z[
        Create a new Enum subclass that replaces a collection of global constants
        c                    s    g | ]\}} |r||fqS r   r   )rc   r   r3   filterr   r   
<listcomp>!  s   z&EnumMeta._convert_.<locals>.<listcomp>c                 S   s   | d | d fS )Nr   r   r   tr   r   r   <lambda>'  rg   z$EnumMeta._convert_.<locals>.<lambda>)rV   c                 S   s   | d S Nr   r   r   r   r   r   r   *  rg   )r   )
varsr   modulesrk   sortr&   _reduce_ex_by_namer+   updater   )r-   r   r   r   sourcemodule_globalsmembersr   r   r   	_convert_  s     	

zEnumMeta._convert_c                 C   s<   |D ]2}|j D ]&}t|tr|jrtd| |jf qqd S )Nz %s: cannot extend enumeration %r)r   
issubclassr   r   r&   r/   )r   r]   r   rx   r   r   r   rY   1  s    
z$EnumMeta._check_for_existing_membersc                    sT   |st tfS  fdd}|d }t|ts2td||p<t }|jrLtd||fS )z
        Returns the type for creating enum members, and the first inherited
        enum class.

        bases: the tuple of bases that was given to __new__
        c                    s   t  }| D ]x}d }|jD ]h}|tu r(qqt|trN|jtur||j  q
qd|jv rxt|trdq||pn|  q
q|p~|}qq
t|dkrt	d |f n|r|
 S d S d S )Nrw   r   z%r: too many data types: %r)rS   r   r   r   r   r   addrj   r   r&   r~   )r]   
data_typesr   	candidaterx   r   r   r   _find_data_typeF  s*    




z.EnumMeta._get_mixins_.<locals>._find_data_typer   zZnew enumerations should be created as `EnumName([mixin_type, ...] [data_type,] enum_type)`zCannot extend enumerations)r   r   r   r&   r   )r   r]   r   ra   r`   r   r   r   rZ   ;  s    
zEnumMeta._get_mixins_c           	      C   s   |  dd}|du}|du rpdD ]H}||fD ].}t||d}|ddjtjtjhvr,|} q\q,|dur  qpq tj}|tju rd}nd}|||fS )a  
        Returns the __new__ to be used for creating the enum members.

        classdict: the class dictionary given to __new__
        member_type: the data type whose __new__ will be used by default
        first_enum: enumeration to check for an overriding __new__
        rw   N)r   rw   FT)r   r[   rw   r   r   )	re   r`   ra   rw   r   methodpossibletargetr   r   r   r   r   j  s*    
zEnumMeta._find_new_)N)N)r/   r,   r0   r1   classmethodrb   rw   r   r   r   r   r   r   r   r   r   propertyr   rz   r   r   r   r   staticmethodrY   rZ   r   rX   r   r   r<   r   r      s6   
 .%
	5
!
	
.r   c                   @   st   e Zd ZdZdd Zdd Zedd Zdd	 Zd
d Z	dd Z
dd Zdd Zdd Zedd Zedd ZdS )r   zV
    Generic enumeration.

    Derive from this class to define new enumerations.
    c              
   C   s(  t || u r|S z| j| W S  ty.   Y n8 tyd   | j D ]}|j|krD|   Y S qDY n0 zd }| |}W n, ty } z|}d }W Y d }~n
d }~0 0 zrt	|| r|W d }d }S t
d|| jf }|d u r|d u r|n|d u rtd| j|f }||_|W d }d }n
d }d }0 d S )N%r is not a valid %szDerror in %s._missing_: returned %r instead of None or a valid member)r   r   r   r&   r   valuesry   rB   	ExceptionrN   rL   r0   r/   __context__)r-   r3   r   excresulteve_excr   r   r   rw     sJ    


zEnum.__new__c              	   C   s4   t |D ]&}z|d W   S  ty,   Y q0 q|S )
        Generate the next value when not given.

        name: the name of the member
        start: the initial start value or None
        count: the number of existing members
        last_value: the last value assigned or None
        r   N)r   r&   )r   r   r   r   
last_valuer   r   r   rA     s    	zEnum._generate_next_value_c                 C   s   d S rr   r   )r-   r3   r   r   r   rB     s    zEnum._missing_c                 C   s   d| j j| j| jf S )N<%s.%s: %r>)r=   r/   r   ry   r;   r   r   r   rz     s    zEnum.__repr__c                 C   s   d| j j| jf S )N%s.%s)r=   r/   r   r;   r   r   r   r{     s    zEnum.__str__c                    s4    fdd j  D dd  jD  }g d| S )z<
        Returns all members and all public methods
        c                    s2   g | ]*}|j D ]}|d  dkr| jvr|qqS r   r   )rj   r   )rc   r-   ru   r;   r   r   r     s   
z Enum.__dir__.<locals>.<listcomp>c                 S   s   g | ]}|d  dkr|qS r   r   rt   r   r   r   r     rg   )r=   r1   r,   )r=   rh   rj   )r(   added_behaviorr   r;   r   r     s    
zEnum.__dir__c                 C   sJ   t | jtjtjfv}| jtu s$|r2t}t| }n| j}| j}|||S )z\
        Returns format using actual value type unless __str__ has been overridden.
        )	r   r{   r   r   r   r   rO   ry   r|   )r(   format_specstr_overriddenr-   valr   r   r   r|     s    	
zEnum.__format__c                 C   s
   t | jS rr   )hashr   r;   r   r   r   __hash__  s    zEnum.__hash__c                 C   s   | j | jffS rr   r=   ry   r'   r   r   r   r+   	  s    zEnum.__reduce_ex__c                 C   s   | j S )zThe name of the Enum member.)r   r;   r   r   r   r     s    z	Enum.namec                 C   s   | j S )zThe value of the Enum member.ry   r;   r   r   r   r3     s    z
Enum.valueN)r/   r,   r0   r1   rw   rA   r   rB   rz   r{   r   r|   r   r+   r   r   r3   r   r   r   r   r     s   -


r   )	metaclassc                   @   s   e Zd ZdZdS )r   z.Enum where members are also (and must be) intsN)r/   r,   r0   r1   r   r   r   r   r     s   r   c                 C   s   | j S rr   r   r'   r   r   r   r   "  s    r   c                   @   sp   e Zd ZdZdd Zedd Zedd Zdd	 Zd
d Z	dd Z
dd Zdd Zdd Zdd Zdd ZdS )r   z
    Support for flags
    c              	   C   sb   |s|dur|S dS t |D ]8}zt|}W  qVW q tyR   td| dY q0 qd|d  S )r   Nr   zInvalid Flag value: %rr   )r   	_high_bitr   r&   )r   r   r   r   r   high_bitr   r   r   rA   *  s    	
zFlag._generate_next_value_c                 C   s.   |}|dk r| }|  |}|dk r*| }|S )V
        Returns member (possibly creating it) if one can be found for value.
        r   )r@   )r-   r3   original_valuepossible_memberr   r   r   rB   =  s    
zFlag._missing_c                 C   sb   | j |d}|du r^t| |\}}|r:td|| jf t| }d|_||_| j 	||}|S )L
        Create a composite member iff value contains only members.
        Nr   )
r   r   
_decomposerL   r0   r   rw   r   ry   r}   )r-   r3   pseudo_memberr   extra_flagsr   r   r   r@   J  s    
zFlag._create_pseudo_member_c                 C   s8   t || js&tdt|j| jjf |j| j@ |jkS )zP
        Returns True if self has at least the same flags set as other.
        r   )rN   r=   r&   r   r0   ry   r(   otherr   r   r   r   ^  s    zFlag.__contains__c                 C   sV   | j }| jd ur$d|j| j| jf S t|| j\}}d|jddd |D | jf S )Nr   |c                 S   s   g | ]}t |jp|jqS r   rO   r   ry   rt   r   r   r   r   o  rg   z!Flag.__repr__.<locals>.<listcomp>)r=   r   r/   ry   r   r   r(   r-   r   	uncoveredr   r   r   rz   h  s    
zFlag.__repr__c                 C   s   | j }| jd ur d|j| jf S t|| j\}}t|dkr^|d jd u r^d|j|d jf S d|jddd |D f S d S )Nr   r   r   z%s.%rr  c                 S   s   g | ]}t |jp|jqS r   r  rt   r   r   r   r   }  rg   z Flag.__str__.<locals>.<listcomp>)r=   r   r/   r   ry   r   r   r  r   r   r   r{   s  s    
zFlag.__str__c                 C   s
   t | jS rr   )boolry   r;   r   r   r   r     s    zFlag.__bool__c                 C   s"   t || jstS | | j|jB S rr   rN   r=   NotImplementedry   r  r   r   r   __or__  s    zFlag.__or__c                 C   s"   t || jstS | | j|j@ S rr   r
  r  r   r   r   __and__  s    zFlag.__and__c                 C   s"   t || jstS | | j|jA S rr   r
  r  r   r   r   __xor__  s    zFlag.__xor__c                 C   sN   t | j| j\}}| d}| jD ] }||vr"|j| j@ s"||B }q"| |S r   )r   r=   ry   )r(   r   r  invertedru   r   r   r   
__invert__  s    


zFlag.__invert__N)r/   r,   r0   r1   rA   r   rB   r@   r   rz   r{   r   r  r  r  r  r   r   r   r   r   %  s   


r   c                   @   sT   e Zd ZdZedd Zedd Zdd Zdd	 Zd
d Z	eZ
eZe	Zdd ZdS )r   z)
    Support for integer-based Flags
    c                 C   s*   t |tstd|| jf | |}|S )r   r   )rN   intrL   r0   r@   )r-   r3   
new_memberr   r   r   rB     s    

zIntFlag._missing_c                 C   s   | j |d}|du r|g}t| |\}}|rtt|}d| }|| j vrZ||vrZ|| || krjd}q*||N }q*t|D ]*}t| |}d|_||_	| j 
||}q||S )r   Nr   r   )r   r   r   r   rT   r   r  rw   r   ry   r}   )r-   r3   r  need_to_creater   r  bit
flag_valuer   r   r   r@     s(    



zIntFlag._create_pseudo_member_c                 C   s0   t || jtfstS | | j| |jB }|S rr   rN   r=   r  r  ry   )r(   r  r   r   r   r   r    s    zIntFlag.__or__c                 C   s,   t || jtfstS | | j| |j@ S rr   r  r  r   r   r   r    s    zIntFlag.__and__c                 C   s,   t || jtfstS | | j| |jA S rr   r  r  r   r   r   r    s    zIntFlag.__xor__c                 C   s   |  | j }|S rr   r   )r(   r   r   r   r   r    s    zIntFlag.__invert__N)r/   r,   r0   r1   r   rB   r@   r  r  r  __ror____rand____rxor__r  r   r   r   r   r     s   
	
 r   c                 C   s   |   d S )zJ
    returns index of highest bit, or -1 if value is zero or negative
    r   )
bit_length)r3   r   r   r   r     s    r   c                 C   s^   g }| j  D ]"\}}||jkr|||jf q|rZddd |D }td| |f | S )zI
    Class decorator for enumerations ensuring unique member values.
    z, c                 S   s   g | ]\}}d ||f qS )z%s -> %sr   )rc   aliasr   r   r   r   r     rg   zunique.<locals>.<listcomp>z duplicate values found in %r: %s)r   rk   r   rT   r   rL   )enumeration
duplicatesr   r   alias_detailsr   r   r   r
     s    
r
   c           	      C   s   |}|dk }g }| D ].}|j }|r||@ |kr|| || M }q|s|}|rdt| }|| jv r|| j|  || M }|| M }qL|s|| jv r|| j|  |jdd dd t|dkr|d j |kr|d ||fS )z-
    Extract all members from the value.
    r   r   c                 S   s   | j S rr   r   )ru   r   r   r   r     rg   z_decompose.<locals>.<lambda>T)rV   reverser   )r3   rT   r   r   r   r   r~   )	flagr3   not_coverednegativer   r   r   tmpr  r   r   r   r     s,    



r   )r   typesr   r   __all__r   r   r    r%   r.   r   r2   r	   dictr4   r   r   r   r  r   r   r   r   r   r
   r   r   r   r   r   <module>   s0   
	T   { vI