ó î%![c@scdZddlZddlZddlZdefd„ƒYZdefd„ƒYZd„ZdS(sIVarious context related utilities, including inference and call contexts.iÿÿÿÿNtInferenceContextcBsYeZdZd Zd d d„Zd„Zd„Zd „Ze j d „ƒZ d „Z RS(s›Provide context for inference Store already inferred nodes to save time Account for already visited nodes to infinite stop infinite recursion tpatht lookupnamet callcontextt boundnodetinferredcCs@|p tƒ|_d|_d|_d|_|p6i|_dS(N(tsetRtNoneRRRR(tselfRR((s.lib/python2.7/site-packages/astroid/context.pyt__init__s    cCs<|j}||f|jkr"tS|jj||fƒtS(sâPush node into inference path :return: True if node is already in context path else False :rtype: bool Allows one to see if the given node has already been looked at for this inference context(RRtTruetaddtFalse(Rtnodetname((s.lib/python2.7/site-packages/astroid/context.pytpush's  cCs=ttj|jƒd|jƒ}|j|_|j|_|S(sÐClone inference path For example, each side of a binary operation (BinOp) starts with the same context but diverge as each side is inferred so the InferenceContext will need be clonedR(RtcopyRRRR(Rtclone((s.lib/python2.7/site-packages/astroid/context.pyR6s!  ccs@g}x |D]}|j|ƒ|Vq Wt|ƒ|j|Tss%s(%s)s, (t __slots__ttypet__name__tjoin(Rtstate((Rs.lib/python2.7/site-packages/astroid/context.pyt__str__Ss  (RRRRRN( R#t __module__t__doc__R!RR RRRt contextlibtcontextmanagerRR&(((s.lib/python2.7/site-packages/astroid/context.pyRs  t CallContextcBs eZdZdZdd„ZRS(s"Holds information for a call site.targstkeywordscCsJ||_|r7g|D]}|j|jf^q}ng}||_dS(N(R,targtvalueR-(RR,R-R.((s.lib/python2.7/site-packages/astroid/context.pyR _s  ((R,R-N(R#R'R(R!RR (((s.lib/python2.7/site-packages/astroid/context.pyR+ZscCs|dk r|jƒStƒS(N(RRR(tcontext((s.lib/python2.7/site-packages/astroid/context.pyt copy_contexths  (R(R)RRtobjectRR+R1(((s.lib/python2.7/site-packages/astroid/context.pyts    L