o ?Hh@sddlmZddlZeejjdZdaGdddaddZ Gdd d e Z dd d Z d d Z ddZdddZddZdS)) _ccallback_cNc@s eZdZdS)CDataN)__name__ __module__ __qualname__rrU/home/air/sanwanet/gpt-api/venv/lib/python3.10/site-packages/scipy/_lib/_ccallback.pyr srcCsBtdurdSzddl}|atjaWdSty daYdSw)NrF)fficffiFFIr ImportError)r rrr _import_cffi s   rc@sneZdZdZdZdddZddZedd Zed d Z ed d Z ddZ e dddZ e dddZdS)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. rNcCs ||||}t||||fSN)_parse_callbacktuple__new__)clsfunction user_data signatureitemrrr rhszLowLevelCallable.__new__cCsd|jd|jdS)NzLowLevelCallable(, ))rrselfrrr __repr__nszLowLevelCallable.__repr__cC t|dS)Nrr __getitem__rrrr rq zLowLevelCallable.functioncCr)Nrrrrr rur!zLowLevelCallable.user_datacCstt|dS)Nr)rget_capsule_signaturerr rrrr ryszLowLevelCallable.signaturecCstr) ValueError)ridxrrr r }szLowLevelCallable.__getitem__c Csnz|j|}Wn)ty}zd}t||d}~wty0}z d|d}t||d}~ww||||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$KeyError)rmodulenamerrremessagerrr from_cythons    zLowLevelCallable.from_cythoncCstt|trt|d}n&t|trt||\}}nt|tr)t||\}}n t |r1|}nt dt|t j r@t|}nt|trJt|}n|durQd}n t |rY|}nt dt |||S)NrzMGiven input is not a callable or a low-level callable (pycapsule/ctypes/cffi)zNGiven user data is not a valid low-level void* pointer (pycapsule/ctypes/cffi))r isinstancerrr PyCFuncPtr_get_ctypes_funcr_get_cffi_funcr check_capsuler$ctypesc_void_p_get_ctypes_data_get_cffi_dataget_raw_capsule)robjrrfunccontextrrr rs(         z LowLevelCallable._parse_callback)NN)rrr__doc__ __slots__rrpropertyrrrr classmethodr-rrrrr rs K     rcCspt|tjj}|dur4t|jd}t|jD]\}}|dkr'|t|7}q|dt|7}q|d7}||fS)Nz (rrr)r3castr4value_typename_from_ctypesrestype enumerateargtypes)r9rfunc_ptrjargrrr r0sr0cCs~|durdS|tjur dS|j}d}|dr&|d7}|dd}|ds|dr1|dd}|dkr=|d d |7}|S) Nvoidzvoid *rLP_rc_r" *)r3r4r startswith)rr* pointer_levelrrr rAs     rAcCst|tjjSr)r3r?r4r@datarrr r5sr5cCs4td|}|durtt|dd}||fS)N uintptr_tz(*)rL)r r?getctypetypeofreplace)r9rrErrr r1s r1cCs td|S)NrR)r r?rPrrr r6r!r6r)rr3 CFUNCTYPEr4 __bases__r/r rrrrr0rAr5r1r6rrrr s  %