B S£†\.ã@sNddlmZddlmZddlmZddlmZddlmZGdd„dƒZdS) é)Úbases)Úcontext)Ú exceptions)Únodes)Úutilc@sNeZdZdZddd„Zedd„ƒZdd„Zd d „Zd d „Z d d„Z dd„Z dS)ÚCallSiteaSClass for understanding arguments passed into a call site It needs a call context, which contains the arguments and the keyword arguments that were passed into a given call site. In order to infer what an argument represents, call :meth:`infer_argument` with the corresponding function node and the argument name. NcCsj|dkr i}||_|j}|j}tƒ|_| |¡|_| |¡|_dd„|jDƒ|_ dd„|j  ¡Dƒ|_ dS)NcSsg|]}|tjk r|‘qS©)rÚ Uninferable)Ú.0Úargrrú0lib/python3.7/site-packages/astroid/arguments.pyú 'sz%CallSite.__init__..cSs i|]\}}|tjk r||“qSr)rr )r ÚkeyÚvaluerrr ú )sz%CallSite.__init__..) Úargument_context_mapÚargsÚkeywordsÚsetÚduplicated_keywordsÚ _unpack_argsÚ_unpacked_argsÚ_unpack_keywordsÚ_unpacked_kwargsÚpositional_argumentsÚitemsÚkeyword_arguments)ÚselfÚ callcontextrrrrrr Ú__init__s  zCallSite.__init__cCst |j|j¡}||ƒS)z/Get a CallSite object from the given Call node.)Ú contextmodZ CallContextrr)ÚclsZ call_noderrrr Ú from_call/szCallSite.from_callcCst|jƒt|jƒkS)anCheck if in the current CallSite were passed *invalid* arguments This can mean multiple things. For instance, if an unpacking of an invalid object was passed, then this method will return True. Other cases can be when the arguments can't be inferred by astroid, for example, by passing objects which aren't known statically. )Úlenrr)rrrr Úhas_invalid_arguments5szCallSite.has_invalid_argumentscCst|jƒt|jƒkS)afCheck if in the current CallSite were passed *invalid* keyword arguments For instance, unpacking a dictionary with integer keys is invalid (**{1:2}), because the keys must be strings, which will make this method to return True. Other cases where this might return True if objects which can't be inferred were passed. )r#rr)rrrr Úhas_invalid_keywords?szCallSite.has_invalid_keywordsc Cs@i}t ¡}|j|_x$|D]\}}|dkr0yt|j|dƒ}Wn"tjk rftj ||<wYnXt |t j ƒs€tj ||<qx¶|j D]¢\}}yt|j|dƒ}Wn"tjk rÆtj ||<wˆYnXt |t jƒsàtj ||<qˆt |jtƒsøtj ||<qˆ|j|kr tj ||j<|j |j¡qˆ|||j<qˆWq|||<qW|S)N)r)r ÚInferenceContextrÚ extra_contextÚnextÚinferrÚInferenceErrorrr Ú isinstancerÚDictrZConstrÚstrrÚadd) rrÚvaluesrÚnamerÚinferredZdict_keyZ dict_valuerrr rIs@            zCallSite._unpack_keywordsc Cs¶g}t ¡}|j|_xœ|D]”}t|tjƒr¤yt|jj |dƒ}Wn$t j k rd|  t j¡wYnX|t jkr~|  t j¡qt|dƒs–|  t j¡q| |j¡q|  |¡qW|S)N)rÚelts)r r&rr'r+rZStarredr(rr)rr*Úappendrr ÚhasattrÚextendr2)rrr/rr r1rrr rqs&       zCallSite._unpack_argsc s,||jkrtjd||||d‚y|j| |¡Stk rBYnXt|jƒt|jjƒkrv|jj svtjd||||d‚|jdt|jjƒ…}|jt|jjƒd…}|j  |¡d}dd„|jj Dƒ‰‡fdd „|j  ¡Dƒ}t|ƒt|jjƒkr(x4|jjD](}|j |krü| |j ¡} | | ¡qüW|dk r|dkrÚ|jd krÚ|jdk r\|j} n |j ¡} t| tjƒr–|j ¡} | |  ¡kr–t| fƒS|jd krÄt| tjƒsºt | ¡} t| fƒS|jd krÚt| fƒS|jd krî|d 8}y|j| |¡Stk rYnX|jj|kr†| ¡rJtjd|j|j||||d‚tj |jj!|jj"|jd} |  #dd„|  ¡Dƒ¡t| fƒS|jj |krè| $¡rºtjd|j|j%||||d‚tj&|jj!|jj"|jd} |  #|¡t| fƒSy|j '|¡ |¡Stj(k rYnXtjd||||d‚dS)ainfer a function argument value according to the call context Arguments: funcnode: The function being called. name: The name of the argument whose value is being inferred. context: Inference context object z:The arguments passed to {func!r} have duplicate keywords.)Ú call_siteÚfuncr rzJToo many positional arguments passed to {func!r} that does not have *args.NrcSsh|] }|j’qSr)r0)r r rrr ú ¯sz*CallSite.infer_argument..csi|]\}}|ˆkr||“qSrr)r rr)Ú kwonlyargsrr r°sz+CallSite.infer_argument..)ÚmethodÚ classmethodr:r;éz‡Inference failed to find values for all keyword arguments to {func!r}: {unpacked_kwargs!r} doesn't correspond to {keyword_arguments!r}.)rZunpacked_kwargsr6r7r r)ÚlinenoÚ col_offsetÚparentcSsg|]\}}t |¡|f‘qSr)rZ const_factory)r rrrrr r øsz+CallSite.infer_argument..z‹Inference failed to find values for all positional arguments to {func!r}: {unpacked_args!r} doesn't correspond to {positional_arguments!r}.)rZ unpacked_argsr6r7r rz.No value found for argument {name} to {func!r}))rrr*rr)ÚKeyErrorr#rrÚvarargZ find_argnamer9rr0Úpopr3ÚtypeÚ boundnoder?Úframer+rZClassDefZscopeÚ metaclassÚiterrZInstanceÚ IndexErrorÚkwargr%rr,r=r>Zpostinitr$rZTupleZ default_valueZ NoDefault)rZfuncnoder0rZ positionalrAZargindexÚkwargsZfunc_argr rDZ method_scoperIrr)r9r Úinfer_argumentˆs¼                      zCallSite.infer_argument)N) Ú__name__Ú __module__Ú __qualname__Ú__doc__rr;r"r$r%rrrKrrrr rs    (rN)Zastroidrrr rrrrrrrr Ú s