o ei>@sjddlmZddlmZmZerddlmZddlmZddl Z GdddZ dd dZ ddddZ dS)) annotations) TYPE_CHECKINGUnion)SequenceDimNc@s^eZdZUded<ddddZdd d ZdddZdddZdddZd ddZ d!ddZ dS)"DimEntryzUnion[Dim, int]dataNUnion[Dim, int, None]returnNonecCsdddlm}t|tur|dkrtd|n|durd}nt||s-tdt|||_dS)NrrrzExpected negative int, got zExpected Dim, got )rtypeintAssertionError isinstancer )selfr rrb/var/www/addictedbytheproject.nl/epg/venv/lib/python3.10/site-packages/functorch/dim/_dim_entry.py__init__s    zDimEntry.__init__otherobjectboolcCsJt|tsdS|r|r|j|jkS|s#|s#|j|juSdS)NF)rr is_positionalr )rrrrr__eq__!s   zDimEntry.__eq__cCst|jtuo |jdkS)Nr)rr rrrrrr0szDimEntry.is_positionalcCs&ddlm}t|j|rdS|jdkS)NrrFr)rrrr )rrrrris_none3s   zDimEntry.is_nonercCs&t|jtstdt|j|jS)NzExpected int, got )rr rrrrrrrposition>s zDimEntry.positionrcCst|jtr td|jS)NzExpected Dim, got int)rr rrrrrrdimCs z DimEntry.dimstrcCs t|jSN)reprr rrrr__repr__Hs zDimEntry.__repr__r!)r r r r )rrr r)r r)r r)r r)r r ) __name__ __module__ __qualname____annotations__rrrrrrr#rrrrr s     r levelsSequence[DimEntry]r rcCs"d}|D] }|r|d7}q|S)Nrr)r)r(rlrrrndim_of_levelsLs r,Ftensor torch.Tensor from_levelslist[DimEntry] to_levels drop_levelsrc Cs||kr|S|}|}|st|t|krtdg}g}|D]8}z||} Wn tyK|r<|dn||j|dYq"w||| ||| q"| ||| S)aF Reshape a tensor to match target levels using as_strided. Args: tensor: Input tensor to reshape from_levels: Current levels of the tensor to_levels: Target levels to match drop_levels: If True, missing dimensions are assumed to have stride 0 Returns: Reshaped tensor z,Cannot expand dimensions without drop_levelsrr) sizestridelenrindex ValueErrorrappendr as_stridedstorage_offset) r-r/r1r2sizesstrides new_sizes new_strideslevelidxrrr _match_levelsTs*  rA)r(r)r r)F) r-r.r/r0r1r0r2rr r.) __future__rtypingrrcollections.abcrrrtorchr r,rArrrrs    <