ftjddlmZddlZejejjdZdaGddadZ Gdde Z dd Z d Z d Zdd Zd ZdS)) _ccallback_cNceZdZdS)CDataN)__name__ __module__ __qualname__S/var/www/html/CA-Chatbot/venv/lib/python3.11/site-packages/scipy/_lib/_ccallback.pyrr sDr rctdS ddl}|atjadS#t$rdaYdSwxYw)NrF)fficffiFFIr ImportError)rs r _import_cffir sZ  hhjj  s$1 AAceZdZdZdZd dZdZedZedZ edZ d Z e d d Z e d d ZdS) LowLevelCallablea Low-level callback function. Some functions in SciPy take as arguments callback functions, which can either be python callables or low-level compiled functions. Using compiled callback functions can improve performance somewhat by avoiding wrapping data in Python objects. Such low-level functions in SciPy are wrapped in `LowLevelCallable` objects, which can be constructed from function pointers obtained from ctypes, cffi, Cython, or contained in Python `PyCapsule` objects. .. seealso:: Functions accepting low-level callables: `scipy.integrate.quad`, `scipy.ndimage.generic_filter`, `scipy.ndimage.generic_filter1d`, `scipy.ndimage.geometric_transform` Usage examples: :ref:`ndimage-ccallbacks`, :ref:`quad-callbacks` Parameters ---------- function : {PyCapsule, ctypes function pointer, cffi function pointer} Low-level callback function. user_data : {PyCapsule, ctypes void pointer, cffi void pointer} User data to pass on to the callback function. signature : str, optional Signature of the function. If omitted, determined from *function*, if possible. Attributes ---------- function Callback function given. user_data User data given. signature Signature of the function. Methods ------- from_cython Class method for constructing callables from Cython C-exported functions. Notes ----- The argument ``function`` can be one of: - PyCapsule, whose name contains the C function signature - ctypes function pointer - cffi function pointer The signature of the low-level callback must match one of those expected by the routine it is passed to. If constructing low-level functions from a PyCapsule, the name of the capsule must be the corresponding signature, in the format:: return_type (arg1_type, arg2_type, ...) For example:: "void (double)" "double (double, int *, void *)" The context of a PyCapsule passed in as ``function`` is used as ``user_data``, if an explicit value for ``user_data`` was not given. r Ncl||||}t||||fSN)_parse_callbacktuple__new__)clsfunction user_data signatureitems r rzLowLevelCallable.__new__hs6""8Y BB}}S49"=>>>r c(d|jd|jdS)NzLowLevelCallable(, ))rrselfs r __repr__zLowLevelCallable.__repr__nsI4=IIdnIIIIr c8t|dS)Nrr __getitem__r"s r rzLowLevelCallable.functionq  q)))r c8t|dS)Nr&r"s r rzLowLevelCallable.user_dataur(r c\tjt|dS)Nr)rget_capsule_signaturerr'r"s r rzLowLevelCallable.signatureys#1%2C2CD!2L2LMMMr ctr) ValueError)r#idxs r r'zLowLevelCallable.__getitem__}s llr c |j|}nG#t$r}d}t||d}~wt$r}d|d}t||d}~wwxYw||||S)a Create a low-level callback function from an exported Cython function. Parameters ---------- module : module Cython module where the exported function resides name : str Name of the exported function user_data : {PyCapsule, ctypes void pointer, cffi void pointer}, optional User data to pass on to the callback function. signature : str, optional Signature of the function. If omitted, determined from *function*. z?Given module is not a Cython module with __pyx_capi__ attributeNz No function z$ found in __pyx_capi__ of the module) __pyx_capi__AttributeErrorr.KeyError)rmodulenamerrremessages r from_cythonzLowLevelCallable.from_cythons" -*40HH - - -WGW%%1 , - - -QTQQQGW%%1 , -s8Y 222s  A, AAActt|trt|d}nxt|t rt ||\}}nOt|trt||\}}n&tj |r|}ntdt|tj rt|}nPt|trt|}n+|d}n&tj |r|}ntdtj|||S)NrzMGiven input is not a callable or a low-level callable (pycapsule/ctypes/cffi)zNGiven user data is not a valid low-level void* pointer (pycapsule/ctypes/cffi))r isinstancerrr' PyCFuncPtr_get_ctypes_funcr_get_cffi_funcr check_capsuler.ctypesc_void_p_get_ctypes_data_get_cffi_dataget_raw_capsule)robjrrfunccontexts r rz LowLevelCallable._parse_callbacks^ c+ , , K$$S!,,DD Z ( ( K.sI>>OD)) U # # K,S)<  .. ? ?FAsAvv23777 T$9#$>$>>> S Y r c|dS|tjurdS|j}d}|dr$|dz }|dd}|d$|dr |dd}|dkr |d d |zzz }|S) Nvoidzvoid *rLP_rc_r* *)r?r@r startswith)rr5 pointer_levels r rNrNs |v  x =DM //%  ABBx //%  tABBxq c-''' Kr cJtj|tjjSr)r?rLr@rMdatas r rArAs ;tV_ - - 33r ctd|}|Ftt|dd}||fS)N uintptr_tz(*)rZ)rrLgetctypetypeofreplace)rErrRs r r=r=sUxx T**HLLD!1!122::5#FF Y r c8td|S)Nrb)rrLr_s r rBrBs 88K & &&r r)rr? CFUNCTYPEr@ __bases__r;rrrrrr<rNrAr=rBr r r rjs V fo . . 8 ;             ]F]F]F]F]Fu]F]F]FH",444'''''r