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Editing: declarations.cpython-36.pyc
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3 ��[e{ � @ s� d Z dZddlZddlmZ ddlmZ ddlmZ ddlZddlm Z ddl m Z dd l m Z dd l m Z dd lmZ dd lmZ i Zd ZdZG dd� de�ZG dd� de �ZG dd� de�Zdd� Zdd� ZeZdd� Z dd � Z d d � Z G d d � d e�Z G d!d"� d"e�Z d#d$� Z!d%d&� Z"d'd(� Z#G d)d*� d*e�Z$e$Z%ej&� Z'd+d*� Z$d,e$_(d-d.� Z)d/d0� Z*d1d2� Z+G d3d4� d4e�Z,e,Z-e,Z.y ddl/Z0W n e1k �r� Y nX dd5l/m.Z. G d6d7� d7ee.�Z2d8d9� Z3d:d;� Z4d<d=� Z5G d>d?� d?e�Z6d@dA� Z7dBdC� Z8dDdE� Z9e9Z:dFdG� Z;e;Z<G dHdI� dIe�Z=e=Z>dPdJdK�Z?e� Z@y ddl/Z0W n e1k �rV Y n2X ddLl/mZ ddMl/m<Z< ddNl/m:Z: ddOl/m>Z> e>� ZAdS )Qa� Implementation of interface declarations There are three flavors of declarations: - Declarations are used to simply name declared interfaces. - ImplementsDeclarations are used to express the interfaces that a class implements (that instances of the class provides). Implements specifications support inheriting interfaces. - ProvidesDeclarations are used to express interfaces directly provided by objects. Zrestructuredtext� N)� FunctionType)� MethodType)� ModuleType)�addClassAdvisor)�InterfaceClass)�SpecificationBase)� Specification)� CLASS_TYPES)�PYTHON3zIClass advice impossible in Python3. Use the @%s class decorator instead.z\The %s API is deprecated, and will not work in Python3 Use the @%s class decorator instead.c @ s e Zd Zdd� Zdd� ZdS )�namedc C s || _ d S )N)�name)�selfr � r �$/usr/lib64/python3.6/declarations.py�__init__5 s znamed.__init__c C s | j |_|S )N)r Z__component_name__)r �obr r r �__call__8 s znamed.__call__N)�__name__� __module__� __qualname__r r r r r r r 3 s r c @ sL e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z e Z dS )� DeclarationzInterface declarationsc G s t j| t|�� d S )N)r r �_normalizeargs)r � interfacesr r r r ? s zDeclaration.__init__c C s. t j| |� y| `W n tk r( Y nX d S )N)r �changedZ_v_attrs�AttributeError)r Zoriginally_changedr r r r B s zDeclaration.changedc C s | j |�o|| j� kS )z:Test whether an interface is in the specification )�extendsr )r � interfacer r r � __contains__I s zDeclaration.__contains__c C s | j � S )zCReturn an iterator for the interfaces in the specification )r )r r r r �__iter__O s zDeclaration.__iter__c C s t | j�S )zCReturn an iterator of all included and extended interfaces )�iterZ__iro__)r r r r � flattenedT s zDeclaration.flattenedc s t � fdd�| j� D �� S )z/Remove interfaces from a specification c s& g | ] � � fd d��j � D �s� �qS )c s g | ]}� j |d �r|�qS )r )r )�.0�j)�ir r � <listcomp>^ s z2Declaration.__sub__.<locals>.<listcomp>.<listcomp>)r )r! )�other)r# r r$ ] s z'Declaration.__sub__.<locals>.<listcomp>)r r )r r% r )r% r �__sub__Y s zDeclaration.__sub__c C s` i }g }x"| j � D ]}d||< |j|� qW x*|j � D ] }||kr6d||< |j|� q6W t|� S )zCAdd two specifications or a specification and an interface � )r �appendr )r r% �seen�resultr# r r r �__add__c s zDeclaration.__add__N) r r r �__doc__r r r r r r& r+ �__radd__r r r r r < s r c @ sd e Zd ZdZf ZdZ edd� �Zdd� Zdd� Zd d � Z d d � Z d d� Z dd� Z dd� Z dd� ZdS )� ImplementsN�?c G s | j | �}||_|j|� |S )N)�__new__r r )�clsr r �instr r r r � s zImplements.namedc C s d| j S )Nz<implementedBy %s>)r )r r r r �__repr__� s zImplements.__repr__c C s t | jffS )N)� implementedBy�inherit)r r r r � __reduce__� s zImplements.__reduce__c C s@ |d kr dS | j | jf}t|dd�t|dd�f}||k||k S )Nr' r � r ���)r r �getattr)r r% Zn1Zn2r r r Z__cmp� s zImplements.__cmpc C s t j| �S )N)r �__hash__)r r r r r: � s zImplements.__hash__c C s | j |�}|dk S )Nr )�_Implements__cmp)r r% �cr r r �__lt__� s zImplements.__lt__c C s | j |�}|dkS )Nr )r; )r r% r< r r r �__le__� s zImplements.__le__c C s | j |�}|dkS )Nr )r; )r r% r< r r r �__gt__� s zImplements.__gt__c C s | j |�}|dkS )Nr )r; )r r% r< r r r �__ge__� s zImplements.__ge__)r r r r5 �declared� classmethodr r3 r6 r; r: r= r> r? r@ r r r r r. { s r. c C s$ t | dd�pdd t | dd�p d S )Nr r/ �.r )r9 )r r r r �_implements_name� s rD c C s� y| j jd�}W nZ tk rj t| dd�}|dkrNtj| �}|dk rJ|S tS |jtkr\|S tt |f�� S X t |t�rz|S |dkr�tj| �}|dk r�|S t | �}|dk r�|f}tj |ft |��� }d|_ | `nZy | j}W n. tk �r t| �� s�td| ��f }Y nX tj |fdd� |D ��� }| |_ yL|| _t| d��sBt| _t | t��rrd| j k�rrt| t| dt| ���| _W n4 tk �r� t | t��s�td | ��|t| < Y nX |S ) z�Return the interfaces implemented for a class' instances The value returned is an `~zope.interface.interfaces.IDeclaration`. �__implemented__Nz$ImplementedBy called for non-factoryc S s g | ] }t |��qS r )r4 )r! r< r r r r$ s z)implementedByFallback.<locals>.<listcomp>�__providedBy__� __provides__� __class__z!ImplementedBy called for non-type)�__dict__�getr r9 �#BuiltinImplementationSpecifications�_emptyrH r. r r � isinstancerD r r5 rE � __bases__�callable� TypeError�hasattr� objectSpecificationDescriptorrF �DescriptorAwareMetaClasses� ClassProvides�typerG )r1 �spec� spec_name�basesr r r �implementedByFallback� s\ rY c G s& t | �}f |_d|_t| f|�� dS )aQ Declare the only interfaces implemented by instances of a class The arguments after the class are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The interfaces given (including the interfaces in the specifications) replace any previous declarations. N)r4 rA r5 �classImplements)r1 r rV r r r �classImplementsOnly- s r[ c G s� t | �}| jtt|��7 _g }i }x(|jD ] }||kr.d||< |j|� q.W |jdk r�x2|jjD ]&}t |�}||krdd||< |j|� qdW t|�|_dS )ab Declare additional interfaces implemented for instances of a class The arguments after the class are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The interfaces given (including the interfaces in the specifications) are added to any interfaces previously declared. r' N)r4 rA �tupler r( r5 rN )r1 r rV rX r) �br< r r r rZ ; s rZ c C s$ | j d \}}| `|| f|�� | S )N�__implements_advice_data__)rI r^ )r1 r rZ r r r �_implements_adviceY s r_ c @ s e Zd ZdZdd� Zdd� ZdS )� implementera# Declare the interfaces implemented by instances of a class. This function is called as a class decorator. The arguments are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The interfaces given (including the interfaces in the specifications) are added to any interfaces previously declared. Previous declarations include declarations for base classes unless implementsOnly was used. This function is provided for convenience. It provides a more convenient way to call `classImplements`. For example:: @implementer(I1) class C(object): pass is equivalent to calling:: classImplements(C, I1) after the class has been created. c G s || _ d S )N)r )r r r r r r } s zimplementer.__init__c C sf t |t�r t|f| j�� |S t|�}tj|f| j�� }y ||_W n tk r` t d|��Y nX |S )NzCan't declare implements) rM rS rZ r rD r. r rE r rP )r r rW rV r r r r � s zimplementer.__call__N)r r r r, r r r r r r r` ` s r` c @ s e Zd ZdZdd� Zdd� ZdS )�implementer_onlya� Declare the only interfaces implemented by instances of a class This function is called as a class decorator. The arguments are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). Previous declarations including declarations for base classes are overridden. This function is provided for convenience. It provides a more convenient way to call `classImplementsOnly`. For example:: @implementer_only(I1) class C(object): pass is equivalent to calling:: classImplementsOnly(I1) after the class has been created. c G s || _ d S )N)r )r r r r r r � s zimplementer_only.__init__c C s0 t |ttf�rtd��nt|f| j�� |S d S )NzIThe implementer_only decorator is not supported for methods or functions.)rM r r � ValueErrorr[ r )r r r r r r � s zimplementer_only.__call__N)r r r r, r r r r r r ra � s ra c C s^ t jd�}|j}||jks"d|kr.t| d ��d|krBt| d ��||f|d< ttdd� d S )N� r z* can be used only from a class definition.r^ z- can be used only once in a class definition.� )�depth)�sys� _getframe�f_locals� f_globalsrP r r_ )r r rZ �frame�localsr r r � _implements� s rl c G s t rttd ��td| t� dS )a� Declare interfaces implemented by instances of a class This function is called in a class definition. The arguments are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The interfaces given (including the interfaces in the specifications) are added to any interfaces previously declared. Previous declarations include declarations for base classes unless `implementsOnly` was used. This function is provided for convenience. It provides a more convenient way to call `classImplements`. For example:: implements(I1) is equivalent to calling:: classImplements(C, I1) after the class has been created. r` � implementsN)r rP � _ADVICE_ERRORrl rZ )r r r r rm � s rm c G s t rttd ��td| t� dS )ak Declare the only interfaces implemented by instances of a class This function is called in a class definition. The arguments are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). Previous declarations including declarations for base classes are overridden. This function is provided for convenience. It provides a more convenient way to call `classImplementsOnly`. For example:: implementsOnly(I1) is equivalent to calling:: classImplementsOnly(I1) after the class has been created. ra �implementsOnlyN)r rP rn rl r[ )r r r r ro � s ro c @ s, e Zd ZdZdd� Zdd� ZdZdd� Zd S ) �Providesz�Implement ``__provides__``, the instance-specific specification When an object is pickled, we pickle the interfaces that it implements. c G s0 |f| | _ || _tj| f|t|�f �� d S )N)�_Provides__args�_clsr r r4 )r r1 r r r r r s zProvides.__init__c C s t | jfS )N)rp rq )r r r r r6 s zProvides.__reduce__zzope.interfacec C s" |dkr|| j kr| S td��dS )zHMake sure that a class __provides__ doesn't leak to an instance NrG )rr r )r r2 r1 r r r �__get__ s zProvides.__get__N)r r r r, r r6 rs r r r r rp s rp c G s& t j| �}|dkr"t| � }|t | < |S )z�Cache instance declarations Instance declarations are shared among instances that have the same declaration. The declarations are cached in a weak value dictionary. N)�InstanceDeclarationsrJ � ProvidesClass)r rV r r r rp ' s Tc G s� t | dd�}|dk r6t |dd�|kr6t| t�s6td��t|�}|dkrNt| �}d}x tD ]}t||�rXd}P qXW |r�t| |f|�� | _nt |f|�� | _dS )aY Declare interfaces declared directly for an object The arguments after the object are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The interfaces given (including the interfaces in the specifications) replace interfaces previously declared for the object. rH NzHAttempt to make an interface declaration on a non-descriptor-aware classFT) r9 rM rS rP r rU � issubclassrT rG rp )�objectr r1 ZissubZdamcr r r �directlyProvides7 s rx c G s t | t| �f|�� dS )aZ Declare interfaces declared directly for an object The arguments after the object are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The interfaces given (including the interfaces in the specifications) are added to the interfaces previously declared for the object. N)rx �directlyProvidedBy)rw r r r r � alsoProvides[ s rz c C s( t | t| �| � |j| �r$td��dS )z; Removes a directly provided interface from an object. z-Can only remove directly provided interfaces.N)rx ry � providedByrb )rw r r r r �noLongerProvidesf s r| c @ s e Zd Zdd� ZdS )�ClassProvidesBaseFallbackc C s( || j kr |d kr| S | jS td��d S )NrG )rr rl r )r r2 r1 r r r rs o s z!ClassProvidesBaseFallback.__get__N)r r r rs r r r r r} m s r} )�ClassProvidesBasec @ s& e Zd ZdZdd� Zdd� ZejZdS )rT z�Special descriptor for class ``__provides__`` The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker. c G s< || _ t|�| _||f| | _tj| f|t|�f �� d S )N)rr r4 rl �_ClassProvides__argsr r )r r1 �metaclsr r r r r � s zClassProvides.__init__c C s | j | jfS )N)rH r )r r r r r6 � s zClassProvides.__reduce__N)r r r r, r r6 r~ rs r r r r rT � s rT c C s4 t | dd�}|dks t|t�r"tS t|jdd� �S )z�Return the interfaces directly provided by the given object The value returned is an `~zope.interface.interfaces.IDeclaration`. rG Nr' r8 )r9 rM r. rL r rN )rw �providesr r r ry � s ry c G sf t rttd ��tjd�}|j}||jks2d|kr:td��d|krJtd��t| �|d< tt dd� d S ) a� Declare interfaces provided directly by a class This function is called in a class definition. The arguments are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The given interfaces (including the interfaces in the specifications) are used to create the class's direct-object interface specification. An error will be raised if the module class has an direct interface specification. In other words, it is an error to call this function more than once in a class definition. Note that the given interfaces have nothing to do with the interfaces implemented by instances of the class. This function is provided for convenience. It provides a more convenient way to call `directlyProvides` for a class. For example:: classProvides(I1) is equivalent to calling:: directlyProvides(theclass, I1) after the class has been created. �providerr' r z7classProvides can be used only from a class definition.rG z:classProvides can only be used once in a class definition.rc )re N) r rP rn rf rg rh ri r r �_classProvides_advice)r rj rk r r r � classProvides� s r� c C s | j d }| `t| f|�� | S )NrG )rI rG rx )r1 r r r r r� � s r� c @ s e Zd ZdZdd� Zdd� ZdS )r� z(Class decorator version of classProvidesc G s || _ d S )N)r )r r r r r r � s zprovider.__init__c C s t |f| j�� |S )N)rx r )r r r r r r � s zprovider.__call__N)r r r r, r r r r r r r� � s r� c G sT t jd�}|j}||jk s"d|kr*td��d|kr:td��ttft| ��� |d< dS )a Declare interfaces provided by a module This function is used in a module definition. The arguments are one or more interfaces or interface specifications (`~zope.interface.interfaces.IDeclaration` objects). The given interfaces (including the interfaces in the specifications) are used to create the module's direct-object interface specification. An error will be raised if the module already has an interface specification. In other words, it is an error to call this function more than once in a module definition. This function is provided for convenience. It provides a more convenient way to call directlyProvides. For example:: moduleImplements(I1) is equivalent to:: directlyProvides(sys.modules[__name__], I1) r' r z9moduleProvides can only be used from a module definition.rG z<moduleProvides can only be used once in a module definition.N)rf rg rh ri rP rp r r )r rj rk r r r �moduleProvides� s r� c C s t || �S )zfProvide object specifications These combine information for the object and for it's classes. )rp )Zdirectr1 r r r �ObjectSpecification s r� c C sJ t | dd �}|d k r"t|t�r"|S y | j}W n tk r@ tS X t|�S )NrG )r9 rM r rH r rL r4 )r r� r1 r r r � getObjectSpecificationFallback$ s r� c ! C s� y | j }W n tk r" t| �S X y |j W nn tk r� y | j}W n tk rb t| j�S X y | jj}W n tk r� |S X ||kr�t| j�S Y nX |S )N)rF r �getObjectSpecificationr rG r4 rH )r �rZcpr r r �providedByFallback5 s$ r� c @ s e Zd ZdZdd� ZdS )�%ObjectSpecificationDescriptorFallbackz�Implement the `__providedBy__` attribute The `__providedBy__` attribute computes the interfaces peovided by an object. c C s0 |dkrt |�S t|dd�}|dk r(|S t|�S )z2Get an object specification for an object NrG )r� r9 r4 )r r2 r1 r� r r r rs o s z-ObjectSpecificationDescriptorFallback.__get__N)r r r r, rs r r r r r� h s r� c C sN |dkr g }| j }t|jks&t|jkr2|j| � nx| D ]}t||� q8W |S )z�Normalize declaration arguments Normalization arguments might contain Declarions, tuples, or single interfaces. Anything but individial interfaces or implements specs will be expanded. N)rH r �__mro__r. r( r )Zsequence�outputr1 �vr r r r s r )r4 )r{ )r� )� ObjectSpecificationDescriptor)N)Br, Z __docformat__rf �typesr r r �weakrefZzope.interface.advicer Zzope.interface.interfacer r r Zzope.interface._compatr rS r rK rn Z_ADVICE_WARNINGrw r r r. rD rY r4 r[ rZ r_ r` ra rl rm ro rp ru �WeakValueDictionaryrt Z__safe_for_unpickling__rx rz r| r} ZClassProvidesBasePyr~ Z-zope.interface._zope_interface_coptimizations�zope� ImportErrorrT ry r� r� r� r� r� r� r� r� r{ r� r� r rL rR r r r r �<module> s� ?O U -' $ 2 ,1
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