Edit File: api.cpython-36.opt-1.pyc
3 '+e� � @ s� d dl Z d dlZddlmZ ddlmZ ddlmZ ye W n( e k rd d dl m Z dd� ZY nX ye W n e k r� e Z Y nX G d d � d e�Zd d � Zd d� Zdd� ZdS )� N� )� allocate_lock)� CDefError)�model)�Callablec C s t | t�S )N)� isinstancer )�x� r �/usr/lib64/python3.6/api.py�<lambda> s r c @ s� e Zd ZdZdfdd�Zdgdd�Zdhdd �Zdid d �Zdjd d�Zdd� Z dd� Z dkdd�Z dd� Z dd� Z dd� Zdd � Zdld d �Zdmd d!�Zd"d#� Zdod%d&�Zd'd(� Zdpd)d*�Zd+d,� Zdqd-d.�Zdrd0d1�Zdsd2d3�Zd4d5� Zdtd6d7�Zd8d9� Z d:d;� Z e e e dd<�Z dvd=d>�Z d?d@� Z!dAdB� Z"dCdD� Z#dEdF� Z$dGdH� Z%dIdJ� Z&dKdL� Z'dMdN� Z(dOdP� Z)dwdRdS�Z*dxdUdV�Z+dWdX� Z,dYdZ� Z-dyd\d]�Z.d^d_� Z/d`da� Z0dbdc� Z1ddde� Z2dS )z�FFIa� The main top-level class that you instantiate once, or once per module. Example usage: ffi = FFI() ffi.cdef(""" int printf(const char *, ...); """) C = ffi.dlopen(None) # standard library -or- C = ffi.verify() # use a C compiler: verify the decl above is right C.printf("hello, %s!\n", ffi.new("char[]", "world")) Nc C s� |dkr^ddl }ddlm} |j|kr^t|d�rJtd|t|j|jf ��ntd|t|jf ��ddlm} || _t� | _ |j � | _ i | _ t jd �j| _t jd �j| _g | _g | _g | _g | _d| _i | _d| _d| _tj|�| _ t|d �r�|j | � x2t |j�D ]$}|j d ��r t | |t!||�� �q W | j �" | j"tj#�| _$| j"tj%�| _&W dQ R X t'|t j��r�tt(d ��s�| j)| j$d�t(_*|j+� \t(_,t(_-n | j)| j$d�| _*|j+� \| _,| _-|j.| _.dS )z{Create an FFI instance. The 'backend' argument is used to select a non-default backend, mostly for tests. Nr r )� __version__�__file__z�Version mismatch: this is the 'cffi' package version %s, located in %r. When we import the top-level '_cffi_backend' extension module, we get version %s, located in %r. 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The functions and global variables can then be accessed via either 'ffi.dlopen()' or 'ffi.verify()'. The types can be used in 'ffi.new()' and other functions. If 'packed' is specified as True, all structs declared inside this cdef are packed, i.e. laid out without any field alignment at all. )�override�packedN)�_cdef)r/ �csourcer3 r4 r r r �cdefc s zFFI.cdefc C s$ | j ||dd� | jd kr d| _d S )NT)r4 Z dllexportr )r5 r$ )r/ r6 r4 r r r � embedding_apim s zFFI.embedding_apic K s� t |t�s&t |t�s td��|jd�}| j�| t� | _| jj |fd|i|�� | j j |� |rvx| j D ] }|j � qfW | jj}|r�g | j_x|D ]}|j| |� q�W W d Q R X d S )Nz cdef() argument must be a string�asciir3 )r �str� basestring� TypeError�encoder �objectr# r �parser �appendr �clearZ _recomplete�finish_backend_type)r/ r6 r3 Zoptions�cache� finishlist�tpr r r r5 r s z FFI._cdefr c C s> | j �. t| ||�\}}| jj|� | jj|� W dQ R X |S )aH Load and return a dynamic library identified by 'name'. The standard C library can be loaded by passing None. 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In other words the returned <cdata> object has ownership of the value of type 'cdecl' that it points to. This means that the raw data can be used as long as this object is kept alive, but must not be used for a longer time. Be careful about that when copying the pointer to the memory somewhere else, e.g. into another structure. )r r; rU r Znewp)r/ rM �initr r r �new� s zFFI.newTc s, �j j� }|j|||�� d� �fdd� }|S )a� Return a new allocator, i.e. a function that behaves like ffi.new() but uses the provided low-level 'alloc' and 'free' functions. 'alloc' is called with the size as argument. If it returns NULL, a MemoryError is raised. 'free' is called with the result of 'alloc' as argument. Both can be either Python function or directly C functions. If 'free' is None, then no free function is called. If both 'alloc' and 'free' are None, the default is used. If 'should_clear_after_alloc' is set to False, then the memory returned by 'alloc' is assumed to be already cleared (or you are fine with garbage); otherwise CFFI will clear it. Nc s t | t�r�j| �} � | |�S )N)r r; rU )rM rb )� allocatorr/ r r �allocate s z#FFI.new_allocator.<locals>.allocate)N)r r � new_allocator)r/ ZallocZfreeZshould_clear_after_allocZ compiled_ffire r )rd r/ r rf s zFFI.new_allocatorc C s" t |t�r| j|�}| jj||�S )z�Similar to a C cast: returns an instance of the named C type initialized with the given 'source'. The source is casted between integers or pointers of any type. )r r; rU r r, )r/ rM �sourcer r r r, s zFFI.castr c C s | j j||�S )a� Return a Python string (or unicode string) from the 'cdata'. If 'cdata' is a pointer or array of characters or bytes, returns the null-terminated string. The returned string extends until the first null character, or at most 'maxlen' characters. If 'cdata' is an array then 'maxlen' defaults to its length. 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Unlike other methods, this one supports all Python buffer including byte strings and bytearrays---but it still does not support non-contiguous buffers. )r �memmove)r/ �dest�src�nr r r rm ` s z FFI.memmovec sB � ���fdd�}t � t�r*�j� dd�� |dkr6|S ||�S dS )a� Return a callback object or a decorator making such a callback object. 'cdecl' must name a C function pointer type. The callback invokes the specified 'python_callable' (which may be provided either directly or via a decorator). Important: the callback object must be manually kept alive for as long as the callback may be invoked from the C level. c s" t | �std���jj� | ���S )Nz.the 'python_callable' argument is not callable)�callabler< r �callback)�python_callable)rM �error�onerrorr/ r r �callback_decorator_wrapx s z-FFI.callback.<locals>.callback_decorator_wrapT)rT N)r r; rU )r/ rM rs rt ru rv r )rM rt ru r/ r rr p s z FFI.callbackr c C sh t |t�r| j|�}|j� }|jd�rBd| jj|d�krBd| }n|rZ|d dkrZd| }| jj||�S )a. 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