a
    c_ɉ                     @   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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 )z5Returns 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 )z3Returns 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 )z1Returns True if a _sunder_ name, False otherwise.r   r   r      r   r   r   r   r   r   
_is_sunder   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_unpicklable$   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	   ,   s   r	   c                       s,   e Zd ZdZ fddZ fddZ  ZS )	_EnumDictzTrack 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   r1   :   s
    
z_EnumDict.__init__c                    sd  t |r|dvrtd|dkr<| jr.t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|sR|| v rtd|| | f t|tr:|jtkr4| |dt| j| jdd |_d| _|j}| j| | j| t || dS )zChanges 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.

        )_order__create_pseudo_member__generate_next_value_	_missing__ignore_z(_names_ are reserved for future Enum user;   z4_generate_next_value_ must be defined before members_generate_next_valuer=   , z-_ignore_ cannot specify already set names: %r	__order__r9   zAttempted to reuse key: %rz%r already defined as: %rr   NT)r    
ValueErrorr5   r!   setattr
isinstancestrreplacesplitlistr4   setr2   r   r   r	   r.   r-   r>   r   r3   appendr0   __setitem__)r#   keyr.   alreadyr7   r   r   rK   A   sB    	



"z_EnumDict.__setitem__)r*   r'   r+   r,   r1   rK   __classcell__r   r   r7   r   r/   3   s   r/   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$Zd.d%d&Zed'd( Zed)d* Zed+d, Z  ZS )/r   zMetaclass for Enumc                 C   s>   |  || t }| ||\}}|d ur:t|dd |d< |S )Nr;   )_check_for_existing_membersr/   _get_mixins_getattr)metaclsr(   bases	enum_dictmember_type
first_enumr   r   r   __prepare__|   s    zEnumMeta.__prepare__c              	      s    dg d  d }|D ]} |d  q| ||\}|  |\}}}	 fdd jD }
 jD ]
} |= qn dd }t|
ddh@ }|rtdd	|d	 vrd
 d	< t
 | || }g |_i |_|_dd | D }i |_d vr2tur2d}tfdd|D s2t|  jD ]*}|
| }t|tsZ|f}n|}tu rn|f}|	s||}t|ds||_n8||g|R  }t|dsȈtu r||_n
| |_|j}||_||_|j|  |j D ]"\}}|j|jkr|} qq|j| ||vr4t||| ||j|< z||j|< W n ty`   Y n0 q8dD ]V}| v r|qjt||}t|d }t||d }|d urj||u rjt||| qjtd ur|r||_ tj|_|d urt|t!r|"dd# }||jkrtd|S )Nr=   c                    s   i | ]}| | qS r   r   ).0k)	classdictr   r   
<dictcomp>       z$EnumMeta.__new__.<locals>.<dictcomp>r9   mro zInvalid enum member name: {0}r?   r,   zAn enumeration.c                 S   s.   h | ]&}|j  D ]\}}t|tr|qqS r   )__dict__itemsrD   r   )rX   crY   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)r_   rX   m)rU   r   r   	<genexpr>   r\   z#EnumMeta.__new__.<locals>.<genexpr>_value_)__repr____str__
__format__r&   r@   z#member order does not match _order_)$
setdefaultrJ   poprP   
_find_new_r2   rI   rB   formatjoinr0   __new___member_names__member_map__member_type_r]   _value2member_map_objectanyr)   rD   tupler   rk   _name___objclass__r1   r`   rC   r!   rQ   r   __new_member__rE   rF   rG   )rR   r(   rS   rZ   ignorerL   rV   rt   save_newuse_argsenum_membersr   r9   invalid_names
enum_classdynamic_attributesmethodsmember_namer.   argsenum_membercanonical_memberclass_method
obj_methodenum_methodr7   )rZ   rU   r   rt      s    















zEnumMeta.__new__c                 C   s   dS )z6
        classes/types should always be True.
        Tr   r6   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   )rt   _create_)r(   r.   namesr   r   r   r   r   r   r   __call__!  s    zEnumMeta.__call__c                 C   s:   t |ts$tdt|j| jjf t || o8|j| jv S Nz3unsupported operand type(s) for 'in': '%s' and '%s')rD   r   r!   r   r+   r8   r|   rv   )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.)rv   AttributeErrorr*   r0   __delattr__)r(   attrr7   r   r   r   F  s
    
zEnumMeta.__delattr__c                 C   s   g d| j  S )N)r8   r,   __members__r'   ru   r6   r   r   r   __dir__N  s    zEnumMeta.__dir__c                 C   s>   t |rt|z| j| W S  ty8   t|dY n0 dS )a5  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   rv   KeyErrorr(   r   r   r   r   __getattr__R  s    	zEnumMeta.__getattr__c                 C   s
   | j | S rg   rv   r   r   r   r   __getitem__b  s    zEnumMeta.__getitem__c                    s    fdd j D S )Nc                 3   s   | ]} j | V  qd S rg   r   rX   r   r(   r   r   rj   f  r\   z$EnumMeta.__iter__.<locals>.<genexpr>r   r   r   r   r   __iter__e  s    zEnumMeta.__iter__c                 C   s
   t | jS rg   )r   ru   r   r   r   r   __len__h  s    zEnumMeta.__len__c                 C   s
   t | jS )zReturns 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   rv   r   r   r   r   r   k  s    zEnumMeta.__members__c                 C   s
   d| j  S )Nz	<enum %r>)r*   r   r   r   r   rl   u  s    zEnumMeta.__repr__c                    s    fddt  jD S )Nc                 3   s   | ]} j | V  qd S rg   r   r   r   r   r   rj   y  r\   z(EnumMeta.__reversed__.<locals>.<genexpr>)reversedru   r   r   r   r   __reversed__x  s    zEnumMeta.__reversed__c                    s0   | j di }||v rtdt || dS )zBlock 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.

        rv   zCannot reassign members.N)r_   getr   r0   __setattr__)r(   r   r.   
member_mapr7   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.

        Nr?   r@   r   r   r*   )r8   rP   rW   rD   rE   rF   rG   r{   rH   	enumerater;   rJ   rt   sys	_getframe	f_globalsr   rB   r   r)   r'   r+   )r(   
class_namer   r   r   r   r   rR   rS   r   rV   rZ   original_nameslast_valuescountr   r.   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   )rX   r   r.   filterr   r   
<listcomp>  s   z&EnumMeta._convert_.<locals>.<listcomp>c                 S   s   | d | d fS )Nr   r   r   tr   r   r   <lambda>  r\   z$EnumMeta._convert_.<locals>.<lambda>)rL   c                 S   s   | d S Nr   r   r   r   r   r   r     r\   )r   )
varsr   modulesr`   sortr!   _reduce_ex_by_namer&   updater   )r(   r   r   r   sourcemodule_globalsmembersr   r   r   	_convert_  s     	

zEnumMeta._convert_c                 C   s<   |D ]2}|j D ]&}t|tr|jrtd| |jf qqd S )Nz %s: cannot extend enumeration %r)__mro__
issubclassr   ru   r!   r*   )r   rS   chainbaser   r   r   rO     s    
z$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 )zReturns the type for creating enum members, and the first inherited
        enum class.

        bases: the tuple of bases that was given to __new__

        c                    s   g }| D ]X}d }|j D ]H}|tu r&qqd|jv rPt|tr<q||pF|  qqt|ts|}qqt|dkrtd |f n|r|d S d S d S )Nrt   r   z%r: too many data types: %rr   )r   ry   r_   r   r   rJ   r   r!   )rS   
data_typesr   	candidater   r   r   r   _find_data_type  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)ry   r   r   r!   ru   )r   rS   r   rV   rU   r   r   r   rP     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__

        rt   N)r~   rt   FT)r   rQ   rt   ry   r   )	rZ   rU   rV   rt   r   methodpossibletargetr   r   r   r   rq     s*    
zEnumMeta._find_new_)N)N)r*   r'   r+   r,   classmethodrW   rt   r   r   r   r   r   r   r   r   r   propertyr   rl   r   r   r   r   staticmethodrO   rP   rq   rN   r   r   r7   r   r   z   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   zRGeneric 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 t	|| r|S t
d|| jf }|d u r|d u r|n|d u rtd| j|f }||_|d S )N%r is not a valid %szDerror in %s._missing_: returned %r instead of None or a valid member)r   rx   r   r!   rv   valuesrk   r<   	ExceptionrD   rB   r+   r*   __context__)r(   r.   r   excresulteve_excr   r   r   rt   D  s:    

zEnum.__new__c              	   C   s4   t |D ]&}z|d W   S  ty,   Y q0 q|S )Nr   )r   r!   )r   r   r   r   
last_valuer   r   r   r;   l  s    zEnum._generate_next_value_c                 C   s   d S rg   r   )r(   r.   r   r   r   r<   u  s    zEnum._missing_c                 C   s   d| j j| j| jf S )N<%s.%s: %r>)r8   r*   r|   rk   r6   r   r   r   rl   y  s    zEnum.__repr__c                 C   s   d| j j| jf S )N%s.%s)r8   r*   r|   r6   r   r   r   rm   }  s    zEnum.__str__c                    s$    fdd j  D }g d| S )Nc                    s2   g | ]*}|j D ]}|d  dkr| jvr|qqS )r   r   )r_   rv   )rX   r(   ri   r6   r   r   r     s   
z Enum.__dir__.<locals>.<listcomp>)r8   r,   r'   )r8   r]   )r#   added_behaviorr   r6   r   r     s    
zEnum.__dir__c                 C   sD   t | jtjk}| jtu s|r,t}t| }n| j}| j}|||S rg   )r   rm   r   rw   ry   rE   rk   rn   )r#   format_specstr_overriddenr(   valr   r   r   rn     s    
zEnum.__format__c                 C   s
   t | jS rg   )hashr|   r6   r   r   r   __hash__  s    zEnum.__hash__c                 C   s   | j | jffS rg   r8   rk   r"   r   r   r   r&     s    zEnum.__reduce_ex__c                 C   s   | j S )zThe name of the Enum member.)r|   r6   r   r   r   r     s    z	Enum.namec                 C   s   | j S )zThe value of the Enum member.rk   r6   r   r   r   r.     s    z
Enum.valueN)r*   r'   r+   r,   rt   r;   r   r<   rl   rm   r   rn   r   r&   r   r   r.   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'   r+   r,   r   r   r   r   r     s   r   c                 C   s   | j S rg   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 flagsc              	   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 )z
        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
        Nr   zInvalid Flag value: %rr   )r   	_high_bitr   r!   )r   r   r   r   r   high_bitr   r   r   r;     s    	
zFlag._generate_next_value_c                 C   s.   |}|dk r| }|  |}|dk r*| }|S r   )r:   )r(   r.   original_valuepossible_memberr   r   r   r<     s    
zFlag._missing_c                 C   sb   | j |d}|du r^t| |\}}|r:td|| jf t| }d|_||_| j 	||}|S )zL
        Create a composite member iff value contains only members.
        Nr   )
rx   r   
_decomposerB   r+   ry   rt   r|   rk   ro   )r(   r.   pseudo_memberr   extra_flagsr   r   r   r:     s    
zFlag._create_pseudo_member_c                 C   s8   t || js&tdt|j| jjf |j| j@ |jkS r   )rD   r8   r!   r   r+   rk   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   rE   r|   rk   rh   r   r   r   r     r\   z!Flag.__repr__.<locals>.<listcomp>)r8   r|   r*   rk   r   rs   r#   r(   r   	uncoveredr   r   r   rl     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   rh   r   r   r   r     r\   z Flag.__str__.<locals>.<listcomp>)r8   r|   r*   r   rk   r   rs   r   r   r   r   rm     s    
zFlag.__str__c                 C   s
   t | jS rg   )boolrk   r6   r   r   r   r     s    zFlag.__bool__c                 C   s"   t || jstS | | j|jB S rg   rD   r8   NotImplementedrk   r   r   r   r   __or__  s    zFlag.__or__c                 C   s"   t || jstS | | j|j@ S rg   r   r   r   r   r   __and__  s    zFlag.__and__c                 C   s"   t || jstS | | j|jA S rg   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   r8   rk   )r#   r   r   invertedri   r   r   r   
__invert__  s    


zFlag.__invert__N)r*   r'   r+   r,   r;   r   r<   r:   r   rl   rm   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 Flagsc                 C   s*   t |tstd|| jf | |}|S )Nr   )rD   intrB   r+   r:   )r(   r.   
new_memberr   r   r   r<   )  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 )Nr   r   )rx   r   r   r   rJ   r   r   rt   r|   rk   ro   )r(   r.   r   need_to_creater   r   bit
flag_valuer   r   r   r:   0  s(    



zIntFlag._create_pseudo_member_c                 C   s0   t || jtfstS | | j| |jB }|S rg   rD   r8   r   r   rk   )r#   r   r   r   r   r   r   N  s    zIntFlag.__or__c                 C   s,   t || jtfstS | | j| |j@ S rg   r  r   r   r   r   r   T  s    zIntFlag.__and__c                 C   s,   t || jtfstS | | j| |jA S rg   r  r   r   r   r   r   Y  s    zIntFlag.__xor__c                 C   s   |  | j }|S rg   r   )r#   r   r   r   r   r   b  s    zIntFlag.__invert__N)r*   r'   r+   r,   r   r<   r:   r   r   r   __ror____rand____rxor__r   r   r   r   r   r   &  s   

r   c                 C   s   |   d S )z@returns index of highest bit, or -1 if value is zero or negativer   )
bit_length)r.   r   r   r   r   g  s    r   c                 C   s^   g }| j  D ]"\}}||jkr|||jf q|rZddd |D }td| |f | S )z?Class decorator for enumerations ensuring unique member values.z, c                 S   s   g | ]\}}d ||f qS )z%s -> %sr   )rX   aliasr   r   r   r   r   s  r\   zunique.<locals>.<listcomp>z duplicate values found in %r: %s)r   r`   r   rJ   rs   rB   )enumeration
duplicatesr   r   alias_detailsr   r   r   r
   k  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 rg   r   )ri   r   r   r   r     r\   z_decompose.<locals>.<lambda>T)rL   reverser   )r.   rJ   r   rx   r   r   rp   )	flagr.   not_coverednegativer   r   r   tmpr  r   r   r   r   x  s,    



r   )r   typesr   r   __all__r   r   r    r)   ry   r-   r	   dictr/   r   r   r   r   r   r   r   r   r   r
   r   r   r   r   r   <module>   s,   D   GsnA