U g@sndZddlZddlZddlZddlZdddgZdddZiaddZddd Z dd dZ dd d Z d dZ dS)zCache lines from Python source files. This is intended to read lines from modules imported -- hence if a filename is not found, it will look down the module search path for a file by that name. Ngetline clearcache checkcachecCs:t||}d|kr"t|kr2nn ||dSdSdS)N)getlineslen)filenamelinenomodule_globalslinesr /usr/lib/python3.8/linecache.pyrs  cCsiadS)zClear the cache entirely.N)cacher r r rrscCsX|tkr(t|}t|dkr(t|dSz t||WStk rRtgYSXdS)zGet the lines for a Python source file from the cache. Update the cache if it doesn't contain an entry for this file already.rN)rr updatecache MemoryErrorr)r r entryr r rr%s   rc Cs|dkrtt}n|tkr&|g}ndS|D]}t|}t|dkrHq.|\}}}}|dkr^q.zt|}Wn$tk rt|dYq.YnX||jks||j kr.t|dq.dS)zUDiscard cache entries that are out of date. (This is not checked upon each call!)Nr) listrkeysrosstatOSErrorpopst_sizest_mtime)r filenamesrsizemtimer fullnamerr r rr5s&    c Cs|tkr$tt|dkr$t|d|r<|dr@|dr@gS|}zt|}Wntk rn|}t||rzt|d}Wnt tfk rYnDX|dkrgYSt|ddd| D|ft|<t|dYStj |rgYSt j D]d}ztj ||}Wnttfk r0YqYnXzt|}WqjWqtk r^YqXqgYSYnXz"t|}|}W5QRXWntk rgYSX|r|d d s|d d 7<|j|j} } | | ||ft|<|S) zUpdate a cache entry and return its list of lines. If something's wrong, print a message, discard the cache entry, and return an empty list.rN<>rcSsg|] }|dqS) r ).0liner r r qszupdatecache..rr")rrr startswithendswithrrr lazycache ImportError splitlinespathisabssysjoin TypeErrorAttributeErrortokenizeopen readlinesrr) r r rrbasenamedatadirnamefpr rrr r rrRs\         rcCs|tkr tt|dkrdSdS|r8|dr<|drr.rr2__all__rrrrrrr)r r r rs     A