U
    jg.                     @   s  d dl Z d dlZd dlZd dlm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#edZ$edZ%G d d! d!Z&G d"d# d#Z'G d$d% d%e(Z)G d&d' d'e(Z*d(d) Z+e j,dd* d+krte+nej-Z.e) Z/d,d- Z0d.d/ Z1G d0d1 d1e(Z2G d2d3 d3e(Z3d4d5 Z4d6d7 Z5G d8d9 d9e(Z6dS ):    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-lnc_7cdn/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LLVMSectionIteratorLLVMOrcLLJITRefLLVMOrcDylibTrackerRefc                   @   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__4   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   register:   s    z_LLVMLock.registerc                 C   s   | j ||f dS )z)Remove the registered callbacks.
        N)r   remover"   r   r   r   
unregisterA   s    z_LLVMLock.unregisterc                 C   s$   | j   | jD ]\}}|  qd S r   )r   acquirer   r"   r   r   r   	__enter__F   s    
z_LLVMLock.__enter__c                 G   s$   | j D ]\}}|  q| j  d S r   )r   r   release)r   exc_detailsr#   r$   r   r   r   __exit__L   s    z_LLVMLock.__exit__N)	__name__
__module____qualname____doc__r    r%   r'   r)   r,   r   r   r   r   r   +   s   r   c                   @   s$   e Zd Zdd Zdd Zdd ZdS )_suppress_cleanup_errorsc                 C   s
   || _ d S r   )_context)r   contextr   r   r   r    T   s    z!_suppress_cleanup_errors.__init__c                 C   s
   | j  S r   )r2   r)   r   r   r   r   r)   W   s    z"_suppress_cleanup_errors.__enter__c                 C   s,   z| j |||W S  tk
r&   Y nX d S r   )r2   r,   PermissionError)r   exc_type	exc_value	tracebackr   r   r   r,   Z   s    z!_suppress_cleanup_errors.__exit__N)r-   r.   r/   r    r)   r,   r   r   r   r   r1   S   s   r1   c                   @   sV   e Zd ZdZdddgZdd Zdd Ze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_handle_fntabr   c                 C   s   d | _ i | _t | _d S r   )r9   r:   r   r   r   r   r   r   r    i   s    z_lib_wrapper.__init__c              
   C   sz   zDt ttdd t  }tt|| _| j	 }W 5 Q R X W n0 t
tfk
rt } zt
d|W 5 d }~X Y nX d S )N.r   z&Could not find/load shared object file)r1   _importlib_resources_pathr-   
rpartitionr   r   CDLLstrr9   ZLLVMPY_GetVersionInfoOSErrorAttributeError)r   Zlib_path_er   r   r   	_load_libn   s    z_lib_wrapper._load_libc                 C   s   | j s|   | j S r   )r9   rD   r   r   r   r   _lib}   s    z_lib_wrapper._libc                 C   sL   z| j | W S  tk
rF   t| j|}t| j|}|| j |< | Y S X d S r   )r:   KeyErrorgetattrrE   _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
        )rE   _namer   r   r   r   rL      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
        )rE   _handler   r   r   r   rM      s    z_lib_wrapper._handleN)r-   r.   r/   r0   	__slots__r    rD   propertyrE   rK   rL   rM   r   r   r   r   r8   a   s   



r8   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 )rH   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   rP   )r   lockrI   r   r   r   r       s    z_lib_fn_wrapper.__init__c                 C   s   | j jS r   rP   argtypesr   r   r   r   rT      s    z_lib_fn_wrapper.argtypesc                 C   s   || j _d S r   rS   )r   rT   r   r   r   rT      s    c                 C   s   | j jS r   rP   restyper   r   r   r   rV      s    z_lib_fn_wrapper.restypec                 C   s   || j _d S r   rU   )r   rV   r   r   r   rV      s    c              
   O   s*   | j  | j||W  5 Q R  S Q R X d S r   rQ   )r   argskwargsr   r   r   __call__   s    z_lib_fn_wrapper.__call__N)r-   r.   r/   r0   rN   r    rO   rT   setterrV   rY   r   r   r   r   rH      s   



rH   c                 C   s   t t | | S )a  Replacement implementation of `import.resources.path` to avoid
    deprecation warning following code at importlib_resources/_legacy.py
    as suggested by https://importlib-resources.readthedocs.io/en/latest/using.html#migrating-from-legacy

    Notes on differences from importlib.resources implementation:

    The `_common.normalize_path(resource)` call is skipped because it is an
    internal API and it is unnecessary for the use here. What it does is
    ensuring `resource` is a str and that it does not contain path separators.
    )_impresZas_filefiles)packageresourcer   r   r   _importlib_resources_path_repl   s    r_      )   	   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)libr   r%   r#   r$   r   r   r   register_lock_callback   s    re   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)rc   r   r'   rd   r   r   r   unregister_lock_callback   s    rf   c                   @   s   e Zd ZdZdS )_DeadPointerz:
    Dummy class to make error messages more helpful.
    N)r-   r.   r/   r0   r   r   r   r   rg      s   rg   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   rk   _ptrbyref_as_parameter__owned)r   Zownedri   r   r   r   r       s    zOutputString.__init__c                 C   s*   | j d k	r&| jrt| j  d | _ | `d S r   )ro   rr   rc   ZLLVMPY_DisposeStringrq   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   rs   r   r5   exc_valexc_tbr   r   r   r,     s    zOutputString.__exit__c                 C   s   | s| j d k	r|    d S r   rt   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>)ro   valueAssertionErrorr   )r   sr   r   r   __str__  s
    
zOutputString.__str__c                 C   s
   t | jS r   boolro   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.
        )ro   rz   r   r   r   r   bytes"  s    zOutputString.bytes)TN)r-   r.   r/   r0   rg   rq   classmethodrn   r    rs   r)   r,   r   ry   r}   r   __nonzero__rO   r   r   r   r   r   rh      s   

rh   c                 C   s   | dk	rt t| S dS )z,To wrap string return-value from C-API.
    N)r?   rh   rn   rm   r   r   r   
ret_string)  s    r   c                 C   s   | dk	rt | jS dS )z+To wrap bytes return-value from C-API.
    N)rh   rn   r   r   r   r   r   	ret_bytes0  s    r   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)
ValueErrorro   rq   rc   Z_capi)r   rm   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_closedrr   _disposer   r   r   r   rs   G  s    zObjectRef.closec                 C   s   | j s| `d| _ d| _dS )zN
        Detach the underlying LLVM resource without disposing of it.
        TN)r   rq   ro   r   r   r   r   r   Q  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   r   Z  s    zObjectRef._disposec                 C   s   | j S )zf
        Whether this object has been closed.  A closed object can't
        be used anymore.
        )r   r   r   r   r   closeda  s    zObjectRef.closedc                 C   s(   t | dst| jr$td| jf | S )Nrs   z%s instance already closed)hasattrr{   r   RuntimeError	__class__r   r   r   r   r)   i  s    zObjectRef.__enter__c                 C   s   |    d S r   rt   ru   r   r   r   r,   o  s    zObjectRef.__exit__c                 C   s   | s| j d k	r|    d S r   rt   rx   r   r   r   ry   r  s    
zObjectRef.__del__c                 C   s
   t | jS r   r~   r   r   r   r   r   w  s    zObjectRef.__bool__c                 C   s.   t |dsdS t| jd t|jd kS )Nro   Fr   )r   r   	addressofro   )r   otherr   r   r   __eq__z  s
    
zObjectRef.__eq__c                 C   s   t t| jtjjS r   )hashr   rj   ro   c_void_prz   r   r   r   r   __hash__  s    zObjectRef.__hash__N)r-   r.   r/   r0   r   rg   rq   rr   r    rs   r   r   rO   r   r)   r,   r   ry   r   r   r   r   r   r   r   r   r   7  s"   
	
r   )7sysr   r   importlib.resources	resourcesr[   Z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   r   r   r1   objectr8   rH   r_   version_infopathr<   rc   re   rf   rg   rh   r   r   r   r   r   r   r   <module>   sb   (>">