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backend_ctypes.cpython-36.pyc
3 M��Zf� � @ s� d dl Z d dlZ d dlZd dlZddlmZ ejdk r<eZne Z e Z e Zdd� ZG dd� de�ZG d d � d e�ZG d d � d e�ZG d d� de�ZG dd� de�ZG dd� de�ZG dd� de�ZG dd� de�ZdS )� N� )�model� c C s t | g�S )N)�bytes)�num� r �&/usr/lib64/python3.6/backend_ctypes.py�<lambda> s r c @ s e Zd ZdS )� CTypesTypeN)�__name__� __module__� __qualname__r r r r r s r c @ s e Zd ZeZdgZdZ dd� Zedd� �Ze dd� �Z ed d � �Z ed d � �Z e d d� �Z ed5dd��Zedd� �Zdd� Zdd� Zd6dd�Zdd � Zed d � �Zd d � Zed!d"� �Zd#d$� Zed%d&� �Zd'd(� Zd)d*� Zed+�Zed,�Z ed-�Z ed.�Z ed/�Z ed0�Z d1d2� Z!d3d4� Z"dS )7� CTypesData� __weakref__z<cdata>c G s t d| jf ��d S )Nzcannot instantiate %r)� TypeError� __class__)�self�argsr r r �__init__ s zCTypesData.__init__c C s t d| j� f ��d S )Nz+expected a pointer or array ctype, got '%s')r � _get_c_name)�cls�initr r r �_newp s zCTypesData._newpc C s t �d S )N)r )�valuer r r � _to_ctypes s zCTypesData._to_ctypesc G s^ y | j }W n" tk r, td| f ��Y nX |rR| j|� }t||�sZ| j |�}n| j � }|S )Nz cannot create an instance of %r)�_ctype�AttributeErrorr r � isinstance)r r �ctype�resr r r �_arg_to_ctypes s zCTypesData._arg_to_ctypesc C s |d kr| j � S | j |�S d S )N)r )r r r r r �_create_ctype_obj. s z CTypesData._create_ctype_objc C s t �d S )N)r )Z ctypes_valuer r r � _from_ctypes5 s zCTypesData._from_ctypes� c C s | j jd|�S )Nz &)� _reftypename�replace)r � replace_withr r r r 9 s zCTypesData._get_c_namec C s* d| j � f | _d| j � f | _d| _d S )Nz CData<%s>�ffi)r r r r )r r r r � _fix_class= s zCTypesData._fix_classc C s t �d S )N)�NotImplementedError)r r r r � _get_own_reprC s zCTypesData._get_own_reprc C s8 |dkr dS |dk r,|ddt jt j� > 7 }d| S d S )Nr ZNULLr � z0x%x)�ctypes�sizeof�c_void_p)r �addressr r r � _addr_reprF s zCTypesData._addr_reprNc C s | j � }d|p| j� |f S )Nz <cdata %r %s>)r* r )r �c_nameZownr r r �__repr__N s zCTypesData.__repr__c C s8 |d kr t d| j� f ��nt d| j� |j� f ��d S )Nz cannot convert %r to an addresszcannot convert %r to %r)r r )r �BClassr r r �_convert_to_addressR s z CTypesData._convert_to_addressc C s t j| j�S )N)r, r- r )r r r r � _get_sizeZ s zCTypesData._get_sizec C s t j| j�S )N)r, r- r )r r r r �_get_size_of_instance^ s z CTypesData._get_size_of_instancec C s t d| j� f ��d S )Nzcannot cast to %r)r r )r �sourcer r r � _cast_froma s zCTypesData._cast_fromc C s | j d �S )N)r4 )r r r r �_cast_to_integere s zCTypesData._cast_to_integerc C s t j| j�S )N)r, Z alignmentr )r r r r � _alignmenth s zCTypesData._alignmentc C s t d| j� ��d S )Nz#cdata %r does not support iteration)r r )r r r r �__iter__l s zCTypesData.__iter__c s t t| �� � fdd�}| |_|S )Nc sz t | t� }t |t�o t |t� }|r@|r@� | jd �|jd ��S |sH|rLtS t | t�r\| j} t |t�rl|j}� | |�S d S )N)r �CTypesGenericPrimitiver r4 �NotImplemented�_value)r �otherZv_is_ptrZw_is_ptr)�cmpfuncr r �cmpr s z!CTypesData._make_cmp.<locals>.cmp)�getattr�operatorZ func_name)�namerA r )r@ r � _make_cmpp s zCTypesData._make_cmp�__eq__�__ne__�__lt__�__le__�__gt__�__ge__c C s t | jd ��S )N)�hashr4 )r r r r �__hash__� s zCTypesData.__hash__c C s t d| f ��d S )Nz string(): %r)r )r �maxlenr r r � _to_string� s zCTypesData._to_string)r# )N)#r r r r Z __metaclass__� __slots__r � classmethodr � staticmethodr r r! r" r r( r* r0 r2 r4 r5 r6 r8 r9 r: r; rE rF rG rH rI rJ rK rM rO r r r r r s> r c @ s e Zd Zg Zdd� Zdd� ZdS )r< c C s t | j�S )N)rL r> )r r r r rM � s z CTypesGenericPrimitive.__hash__c C s t | j| j��S )N)�reprr" r> )r r r r r* � s z$CTypesGenericPrimitive._get_own_reprN)r r r rP rM r* r r r r r< � s r< c @ s, e Zd Zg Zedd� �Zdd� Zdd� ZdS )�CTypesGenericArrayc C s | |�S )Nr )r r r r r r � s zCTypesGenericArray._newpc c s$ x t t| ��D ]}| | V qW d S )N)�xrange�len)r �ir r r r; � s zCTypesGenericArray.__iter__c C s | j tj| j��S )N)r0 r, � addressof�_blob)r r r r r* � s z CTypesGenericArray._get_own_reprN)r r r rP rQ r r; r* r r r r rT � s rT c @ s� e Zd ZddgZdZdZedd� �Zedd� �Zed d � �Z d d � Z d d� Z dd� Z e Z edd� �Zedd� �Zedd� �Zdd� ZdS )�CTypesGenericPtr�_address� _as_ctype_ptrF�pointerc C s | |�S )Nr )r r r r r r � s zCTypesGenericPtr._newpc C sV |d krd}n>t |t�r"|j� }n*t |ttf�r6|}ntd| t|�jf ��| j|�S )Nr zbad type for cast to %r: %r) r r r9 �int�longr �typer �_new_pointer_at)r r7 r/ r r r r8 � s zCTypesGenericPtr._cast_fromc C s$ | j | �}||_tj|| j�|_|S )N)�__new__r[ r, �castr r\ )r r/ r r r r ra � s z CTypesGenericPtr._new_pointer_atc C s& y | j | j�S tk r dS X d S )Nz???)r0 r[ r )r r r r r* � s z CTypesGenericPtr._get_own_reprc C s | j S )N)r[ )r r r r r9 � s z!CTypesGenericPtr._cast_to_integerc C s t | j�S )N)�boolr[ )r r r r � __nonzero__� s z CTypesGenericPtr.__nonzero__c C s4 t |t�s tdt|�j ��|j| �}tj|| j�S )Nzunexpected %s object) r r r r` r r4 r, rc r )r r r/ r r r r � s zCTypesGenericPtr._to_ctypesc C s t j|t j�jpd}| j|�S )Nr )r, rc r. r ra )r � ctypes_ptrr/ r r r r" � s z CTypesGenericPtr._from_ctypesc C s |r| j |�j|_d S )N)r �contents)r rf r r r r � _initialize� s z CTypesGenericPtr._initializec C s0 || j d fks|js| jr | jS tj| |�S d S )N)r �_automatic_castsr[ r r4 )r r3 r r r r4 � s z$CTypesGenericPtr._convert_to_addressN)r r r rP ri �kindrQ r r8 ra r* r9 re �__bool__r r" rh r4 r r r r rZ � s rZ c @ s\ e Zd ZdgZedd� �Zdd� Zedd� �Zdd � Zed d � �Z ed d � �Z ddd�Z dS )�CTypesBaseStructOrUnionrY c C s t d| f ��d S )Nz!cannot instantiate opaque type %s)r )r r r r r r! � s z)CTypesBaseStructOrUnion._create_ctype_objc C s | j tj| j��S )N)r0 r, rX rY )r r r r r* � s z%CTypesBaseStructOrUnion._get_own_reprc C s t | j|�jS )N)rB r �offset)r � fieldnamer r r � _offsetof� s z!CTypesBaseStructOrUnion._offsetofc C s. t |dd �| jkr tj| j�S tj| |�S d S )N�_BItem)rB r r, rX rY r r4 )r r3 r r r r4 � s z+CTypesBaseStructOrUnion._convert_to_addressc C s | j | �}||_|S )N)rb rY )r Zctypes_struct_or_unionr r r r r" s z$CTypesBaseStructOrUnion._from_ctypesc C s |j S )N)rY )r r r r r r s z"CTypesBaseStructOrUnion._to_ctypesNc C s t j| |p| jd��S )Nz &)r r2 r )r r1 r r r r2 s z CTypesBaseStructOrUnion.__repr__)N) r r r rP rQ r! r* ro r4 r" r r2 r r r r rl � s rl c @ s e Zd Zejejejejejej ej ej ej ej ejejejejd�ZxfdMD ]^Zejee �Zee edde < eejej�kr�ee ed < eejej�krLee ed < qLW xtdND ]lZejee �Zee edde < eejej�k�ree ed< ee ed< eejej�kr�ee ed< q�W dd� Zdd� Zdd� ZdOdd �Zd d � Z d d � Z d!d"� Z d#d$� Z d%d&� Z d'd(� Z!d)d*� Z"dRd,d-�Z#d.d/� Z$d0d1� Z%d2d3� Z&d4d5� Z'dTd6d7�Z(dVd8d9�Z)d:d;� Zd<d=� Z*d>d?� Z+d@dA� Z,dBdC� Z-dDZ.dWdEdF�Z/e0Z1dGdH� Z2dXdIdJ�Z3dYdKdL�Z4dDS )Z� CTypesBackend)�char�shortr^ r_ z long longz signed charz unsigned charzunsigned shortz unsigned intz unsigned longzunsigned long long�float�double�_Bool�unsigned long long� unsigned long� unsigned int�unsigned short� unsigned charzuint%d_tr+ Z uintptr_tZsize_t� long longr_ r^ rs � signed charzint%d_tZintptr_tZ ptrdiff_tZssize_tc C s d| _ d| _tj| _tj| _d S )Nr )� RTLD_LAZY�RTLD_NOWr, � RTLD_GLOBAL� RTLD_LOCAL)r r r r r 7 s zCTypesBackend.__init__c C s || _ d S )N)r' )r r' r r r �set_ffi= s zCTypesBackend.set_ffic C s t tfS )N)r r )r r r r � _get_types@ s zCTypesBackend._get_typesr c C s t j||�}t| |�S )N)r, ZCDLL� CTypesLibrary)r �path�flags�cdllr r r � load_libraryC s zCTypesBackend.load_libraryc C s G dd� dt �}|j� |S )Nc @ s, e Zd Zg ZdZedd� �Zedd� �ZdS )z/CTypesBackend.new_void_type.<locals>.CTypesVoidzvoid &c S s d S )Nr )�novaluer r r r" K s z<CTypesBackend.new_void_type.<locals>.CTypesVoid._from_ctypesc S s | d k r t dt| �jf ��d S )Nz None expected, got %s object)r r` r )r� r r r r N s z:CTypesBackend.new_void_type.<locals>.CTypesVoid._to_ctypesN)r r r rP r$ rR r" r r r r r � CTypesVoidH s r� )r r( )r r� r r r � new_void_typeG s zCTypesBackend.new_void_typec s� �dkrt ���| j� ��dkr(d}n<�dkr6d}n.�dkrDd}n�dkrRd }nd }�d�jdk�� fd d ��|�G � �����fdd�dt�� � j� � S )NZwchar_trr rt ru � signed char� unsigned char�byterv rd r^ r c sj t | tttf�rt| �} nLt | t�r.| j� } n8t | t�rBt| �} n$| d krPd} ntd� t | �j f ��| S )Nr zbad type for cast to %r: %r) r r^ r_ rt r r9 r �ordr r` r )r7 )�CTypesPrimitiver r �_cast_source_to_inth s z=CTypesBackend.new_primitive_type.<locals>._cast_source_to_intc s� e Zd ZdgZ�Zd� Z�Zdd� Ze� �fdd��Z edksHedkrbe ��fd d ��Z d d � Z ed kr�e �fdd ��Z dd � Z edkr�e �fdd ��Z dd � Z edkr�e ��fdd ��Z dd � Z dd� Z e Zedks�edks�ed kr�e���fdd��Zedk�r e� fdd��Zdd � Znd d � ZeZedk�rFe�fd d��Zed d � �Ze� fd!d"��Zedk�rtd#d$� Zedk�r�d%d$� Zd&S )'z9CTypesBackend.new_primitive_type.<locals>.CTypesPrimitiver> z%s &c S s || _ d S )N)r> )r r r r r r } s zBCTypesBackend.new_primitive_type.<locals>.CTypesPrimitive.__init__c s | d kr�� S �� j | ��S )N)r )r )r� r r r r! � s zKCTypesBackend.new_primitive_type.<locals>.CTypesPrimitive._create_ctype_objr^ r� c s � |�}�|�j }| |�S )N)r )r r7 )r� r r r r8 � s zDCTypesBackend.new_primitive_type.<locals>.CTypesPrimitive._cast_fromc S s | j S )N)r> )r r r r �__int__� s zACTypesBackend.new_primitive_type.<locals>.CTypesPrimitive.__int__rd c s$ t |tttf�s� |�}| t|��S )N)r r^ r_ rt rd )r r7 )r� r r r8 � s c S s | j S )N)r> )r r r r r� � s rr c s � |�}t |d@ �}| |�S )N� 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