U
    +d'                  
   @   s  d dl Z d dlZd dlZd dlmZmZ d dlmZ dd Z	e	dZ
e	dZe	dZe	d	Ze	d
Ze	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZe	dZ e	dZ!G dd dZ"G d d! d!e#Z$G d"d# d#e#Z%e Z&d$'e()d$d d% Z*z$ej+,e*e&Z-e .e/e-0 Z1W n< e2k
r Z3 zd&e& d'e3 Z4e2e4W 5 dZ3[3X Y nX e$e1Z1d(d) Z5d*d+ Z6G d,d- d-e#Z7G d.d/ d/e#Z8d0d1 Z9d2d3 Z:G d4d5 d5e#Z;dS )6    N)_decode_string_is_shutting_down)get_library_namec                 C   s   t | tjfi }t|S N)typectypes	StructurePOINTER)nameZnewcls r   8/tmp/pip-unpacked-wheel-stw2luzp/llvmlite/binding/ffi.py_make_opaque_ref	   s    r   ZLLVMContextZ
LLVMModuleZ	LLVMValueZLLVMTypeZLLVMExecutionEngineZLLVMPassManagerBuilderZLLVMPassManagerZLLVMTargetDataZLLVMTargetLibraryInfoZ
LLVMTargetZLLVMTargetMachineZLLVMMemoryBufferLLVMAttributeListIteratorLLVMAttributeSetIteratorLLVMGlobalsIteratorLLVMFunctionsIteratorLLVMBlocksIteratorLLVMArgumentsIteratorLLVMInstructionsIteratorLLVMOperandsIteratorLLVMTypesIteratorZLLVMObjectCacheZLLVMObjectFileZLLVMSectionIteratorc                   @   s8   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d ZdS )	_LLVMLocka6  A Lock to guarantee thread-safety for the LLVM C-API.

    This class implements __enter__ and __exit__ for acquiring and releasing
    the lock as a context manager.

    Also, callbacks can be attached so that every time the lock is acquired
    and released the corresponding callbacks will be invoked.
    c                 C   s   t  | _g | _d S r   )	threadingRLock_lock_cblistselfr   r   r   __init__1   s    
z_LLVMLock.__init__c                 C   s   | j ||f dS )zRegister callbacks that are invoked immediately after the lock is
        acquired (``acq_fn()``) and immediately before the lock is released
        (``rel_fn()``).
        N)r   appendr   acq_fnrel_fnr   r   r   register7   s    z_LLVMLock.registerc                 C   s   | j ||f dS )z)Remove the registered callbacks.
        N)r   remover    r   r   r   
unregister>   s    z_LLVMLock.unregisterc                 C   s$   | j   | jD ]\}}|  qd S r   )r   acquirer   r    r   r   r   	__enter__C   s    
z_LLVMLock.__enter__c                 G   s$   | j D ]\}}|  q| j  d S r   )r   r   release)r   exc_detailsr!   r"   r   r   r   __exit__I   s    z_LLVMLock.__exit__N)	__name__
__module____qualname____doc__r   r#   r%   r'   r*   r   r   r   r   r   (   s   r   c                   @   sB   e Zd ZdZdddgZdd Zdd Zed	d
 Zedd Z	dS )_lib_wrapperz{Wrap libllvmlite with a lock such that only one thread may access it at
    a time.

    This class duck-types a CDLL.
    _lib_fntabr   c                 C   s   || _ i | _t | _d S r   )r0   r1   r   r   )r   libr   r   r   r   X   s    z_lib_wrapper.__init__c                 C   sL   z| j | W S  tk
rF   t| j|}t| j|}|| j |< | Y S X d S r   )r1   KeyErrorgetattrr0   _lib_fn_wrapperr   )r   r
   cfnwrappedr   r   r   __getattr__]   s    
z_lib_wrapper.__getattr__c                 C   s   | j jS )zgThe name of the library passed in the CDLL constructor.

        For duck-typing a ctypes.CDLL
        )r0   _namer   r   r   r   r9   g   s    z_lib_wrapper._namec                 C   s   | j jS )z]The system handle used to access the library.

        For duck-typing a ctypes.CDLL
        )r0   _handler   r   r   r   r:   o   s    z_lib_wrapper._handleN)
r+   r,   r-   r.   	__slots__r   r8   propertyr9   r:   r   r   r   r   r/   P   s   


r/   c                   @   s\   e Zd ZdZddgZdd Zedd Zejdd Zed	d
 Z	e	jdd
 Z	dd Z
dS )r5   zWraps and duck-types a ctypes.CFUNCTYPE to provide
    automatic locking when the wrapped function is called.

    TODO: we can add methods to mark the function as threadsafe
          and remove the locking-step on call when marked.
    r   _cfnc                 C   s   || _ || _d S r   r   r=   )r   lockr6   r   r   r   r      s    z_lib_fn_wrapper.__init__c                 C   s   | j jS r   r=   argtypesr   r   r   r   rA      s    z_lib_fn_wrapper.argtypesc                 C   s   || j _d S r   r@   )r   rA   r   r   r   rA      s    c                 C   s   | j jS r   r=   restyper   r   r   r   rC      s    z_lib_fn_wrapper.restypec                 C   s   || j _d S r   rB   )r   rC   r   r   r   rC      s    c              
   O   s*   | j  | j||W  5 Q R  S Q R X d S r   r>   )r   argskwargsr   r   r   __call__   s    z_lib_fn_wrapper.__call__N)r+   r,   r-   r.   r;   r   r<   rA   setterrC   rF   r   r   r   r   r5   x   s   



r5   .z(Could not find/load shared object file: z
 Error was: c                 C   s   t j| | dS )z~Register callback functions for lock acquire and release.
    *acq_fn* and *rel_fn* are callables that take no arguments.
    N)r2   r   r#   r!   r"   r   r   r   register_lock_callback   s    rK   c                 C   s   t j| | dS )zRemove the registered callback functions for lock acquire and release.
    The arguments are the same as used in `register_lock_callback()`.
    N)r2   r   r%   rJ   r   r   r   unregister_lock_callback   s    rL   c                   @   s   e Zd ZdZdS )_DeadPointerz:
    Dummy class to make error messages more helpful.
    N)r+   r,   r-   r.   r   r   r   r   rM      s   rM   c                   @   sp   e Zd ZdZe Zedd ZdddZdd	 Z	d
d Z
dd ZefddZdd Zdd ZeZedd ZdS )OutputStringz<
    Object for managing the char* output of LLVM APIs.
    c                 C   s   | t |t jdS )a%  Constructing from a pointer returned from the C-API.
        The pointer must be allocated with LLVMPY_CreateString.

        Note
        ----
        Because ctypes auto-converts *restype* of *c_char_p* into a python
        string, we must use *c_void_p* to obtain the raw pointer.
        )init)r   castc_char_p)clsptrr   r   r   from_return   s    
zOutputString.from_returnTNc                 C   s0   |d k	r|nt d | _t | j| _|| _d S r   )r   rQ   _ptrbyref_as_parameter__owned)r   ZownedrO   r   r   r   r      s    zOutputString.__init__c                 C   s*   | j d k	r&| jrt| j  d | _ | `d S r   )rU   rX   r2   ZLLVMPY_DisposeStringrW   r   r   r   r   close   s
    
zOutputString.closec                 C   s   | S r   r   r   r   r   r   r'      s    zOutputString.__enter__c                 C   s   |    d S r   rY   r   exc_typeexc_valexc_tbr   r   r   r*      s    zOutputString.__exit__c                 C   s   | s| j d k	r|    d S r   rZ   r   r   r   r   r   __del__   s    
zOutputString.__del__c                 C   s*   | j d krdS | j j}|d k	s"tt|S )Nz<dead OutputString>)rU   valueAssertionErrorr   )r   sr   r   r   __str__   s
    
zOutputString.__str__c                 C   s
   t | jS r   boolrU   r   r   r   r   __bool__   s    zOutputString.__bool__c                 C   s   | j jS )z:Get the raw bytes of content of the char pointer.
        )rU   ra   r   r   r   r   bytes   s    zOutputString.bytes)TN)r+   r,   r-   r.   rM   rW   classmethodrT   r   rY   r'   r*   r   r`   rd   rg   __nonzero__r<   rh   r   r   r   r   rN      s   

rN   c                 C   s   | dk	rt t| S dS )z,To wrap string return-value from C-API.
    N)strrN   rT   rS   r   r   r   
ret_string   s    rm   c                 C   s   | dk	rt | jS dS )z+To wrap bytes return-value from C-API.
    N)rN   rT   rh   rl   r   r   r   	ret_bytes  s    rn   c                   @   s   e Zd ZdZdZe ZdZdd Zdd Z	dd Z
d	d
 Zedd Zdd Zdd ZefddZdd Zdd ZeZdd ZdS )	ObjectRefzJ
    A wrapper around a ctypes pointer to a LLVM object ("resource").
    Fc                 C   s&   |d krt d|| _|| _t| _d S )NzNULL pointer)
ValueErrorrU   rW   r2   Z_capi)r   rS   r   r   r   r     s
    zObjectRef.__init__c                 C   s(   z| js| js|   W 5 |    X dS )zI
        Close this object and do any required clean-up actions.
        N)detach_closedrX   _disposer   r   r   r   rY     s    zObjectRef.closec                 C   s   | j s| `d| _ d| _dS )zN
        Detach the underlying LLVM resource without disposing of it.
        TN)rr   rW   rU   r   r   r   r   rq   '  s    zObjectRef.detachc                 C   s   dS )z
        Dispose of the underlying LLVM resource.  Should be overriden
        by subclasses.  Automatically called by close(), __del__() and
        __exit__() (unless the resource has been detached).
        Nr   r   r   r   r   rs   0  s    zObjectRef._disposec                 C   s   | j S )zf
        Whether this object has been closed.  A closed object can't
        be used anymore.
        )rr   r   r   r   r   closed7  s    zObjectRef.closedc                 C   s(   t | dst| jr$td| jf | S )NrY   z%s instance already closed)hasattrrb   rr   RuntimeError	__class__r   r   r   r   r'   ?  s    zObjectRef.__enter__c                 C   s   |    d S r   rZ   r[   r   r   r   r*   E  s    zObjectRef.__exit__c                 C   s   | s| j d k	r|    d S r   rZ   r_   r   r   r   r`   H  s    
zObjectRef.__del__c                 C   s
   t | jS r   re   r   r   r   r   rg   M  s    zObjectRef.__bool__c                 C   s.   t |dsdS t| jd t|jd kS )NrU   Fr   )ru   r   	addressofrU   )r   otherr   r   r   __eq__P  s
    
zObjectRef.__eq__c                 C   s   t t| jtjjS r   )hashr   rP   rU   c_void_pra   r   r   r   r   __hash__Y  s    zObjectRef.__hash__N)r+   r,   r-   r.   rr   rM   rW   rX   r   rY   rq   rs   r<   rt   r'   r*   r   r`   rg   rz   rj   r}   r   r   r   r   ro     s"   
	
ro   )<r   r   importlib.resources	importlibZllvmlite.binding.commonr   r   Zllvmlite.utilsr   r   ZLLVMContextRefZLLVMModuleRefZLLVMValueRefZLLVMTypeRefZLLVMExecutionEngineRefZLLVMPassManagerBuilderRefZLLVMPassManagerRefZLLVMTargetDataRefZLLVMTargetLibraryInfoRefZLLVMTargetRefZLLVMTargetMachineRefZLLVMMemoryBufferRefr   r   r   r   r   r   r   r   r   ZLLVMObjectCacheRefZLLVMObjectFileRefZLLVMSectionIteratorRefr   objectr/   r5   Z	_lib_namejoinr+   splitpkgname	resourcespathZ_lib_handleCDLLrk   r'   r2   OSErroremsgrK   rL   rM   rN   rm   rn   ro   r   r   r   r   <module>   sd   ((">