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cCs"x|D]}|i|ƒqWdS(N(sselfsesassignsvalues(sselfsvaluesse((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pysassign´s(s__name__s __module__s__str__s__repr__sassign(((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pysListŸs sBinaryOperator_sUnaryOperator_c Cs!|iƒ}tƒ}d} d}d}d}t|ƒ}x¼||jo®||}|dddgt i ƒjo| |7} nc|djo |djoq<n| o|t i ƒjo |i t| |ƒƒd} n|ddfjoKt||ƒ\}}t|ƒ}|i |ƒd} t|ƒ}d}nª|t i ƒjo–t||ƒ\}}t| |ƒ}t|tƒo8t|tƒ otƒ|g}n||_|}n|i |ƒd} t|ƒ}d}n|}|d7}q<W| o|i t| tƒƒn|SdS(sÇ Parse the expression 's' and return a list of it's parts, each being a list with the first element as it's type, the second as it's name and the second as it parameters (functions). sis s's"iN(sssstrips Expressionsesnamestypeslcscposslenseposscsclosingskeyssappendsidentify_symbols string_parsersrsStrings tuple_parserselements isinstancesFunctionsLists parameterssNone( 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You may use expression_parser() and give a textual expression, then pass the returned Expression to this function. Parameters: @param expression a Expression with desired operands and operators. @param values a dict with the values of Variable and Function elements used in expression. @return the evaluated expression value. N(s expressionsassignsvaluessbuildseval(s expressionsvalues((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pysevaluate_expressions   cCs|tiƒjot|ƒSn|dtfjo›ytti|ƒƒSWnnXytti |ƒƒSWnnX|dddfjot |ƒSn|di ƒp|ddjot |ƒSqn4|t iƒjo |ot|ƒSqtƒSnt|ƒSdS(s4 Identify name to be a keyword, var or function, based on the next char. Helper to expression_parser(). Parameters: @param name the symbol you want to identify. @param next_char the next char following name in parsed expression. @return a object representing that symbol. s is"s's_N(snames operatorsskeyss next_charsNonesIntegersstringsatoisFloatsatofsStringsisalphasVariablesclosingsFunctionsListsUnknow(snames next_char((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pysidentify_symbol+s* " c Cs´tƒ}|iƒ}t|d}|d}d}d} t|ƒ}t }x7| |jo)|| }|ti ƒjo}t||| !ƒ}t|ƒdjo|d}n|| }t|ƒ\}}|i|ƒ|}d}} t|ƒ}n‚||jott|| ƒ}t|ƒdjo|d}n|o|i|i7_n|}|i|ƒ|| d}Pn| d7} qNWt|ƒdjo|d}n||gSdS(sL Parse string 's' and return a list of lists or tuples, using 'closing' characters. Helper to expression_parser(). Parameters: @param s the string with the tuple to be parsed. @return a list with the first argument being the string left to be parsed and the second the parsed tuple, as List object. iiN(sListstsssstripsclosingsdslposscposslensepossNonesescskeyss break_liststmps tuple_parserstrsappendselements( ssstmpsepossesdstrscslposstscpos((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pys tuple_parserYsH            cCs|iƒ}|d}|d}d}t|ƒ}d}x¥||jo—||}||jo`|djo||ddjo0||d ||}|d8}t|ƒ}q¿|d8}n|djoPn|d7}q;W|| }||d}||gSdS(s# Parse string 's' and return the resulting string inside it. Helper to expression_parser(). Parameters: @param s the string with the string to be parsed. @return a list with the first argument being the string left to be parsed and the second the parsed string. iis\N( sssstripsdscposslensepossdepthscsr(ssseposscsdsdepthsrscpos((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pys string_parser£s,        "   cCsa|iƒidƒ}tƒ}x8|D]0}|iƒ}|o|it|ƒƒq%q%W|SdS(s. Split string 's' at commas and return the list, removing empty elements. Each element will be a expression Helper to expression_parser(). Parameters: @param s the string with a list (comma separated values) to be parsed. @return a List object with non-empty elements. s,N( sssstripssplitslsListsrsesappendsexpression_parser(ssseslsr((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pys break_listÊs   (,sstringscopysclosingsDEBUGsUnknowsConstantsStringsIntegersFloatsVariablesOperatorsBinaryOperatorsBinaryOperator_OrsBinaryOperator_AndsBinaryOperator_PlussBinaryOperator_MinussBinaryOperator_MultiplysBinaryOperator_DividesBinaryOperator_ModulesBinaryOperator_PowersBinaryOperator_EqualsBinaryOperator_NotEquals UnaryOperatorsUnaryOperator_NotsFunctions ExpressionslistsListslocalsslsbinary_operatorssunary_operatorss operatorsskeysscsCs startswithsnamesexpression_parsersevaluate_expressionsidentify_symbols tuple_parsers string_parsers break_list('sBinaryOperatorsBinaryOperator_PowersBinaryOperator_Equalsbinary_operatorss tuple_parsersevaluate_expressionsBinaryOperator_ModulesFunctionsBinaryOperator_NotEqualsStringsUnknowsBinaryOperator_OrsUnaryOperator_NotsBinaryOperator_AndsVariablesIntegersunary_operatorssCsstringsexpression_parsers operatorssListsBinaryOperator_PlussBinaryOperator_Multiplys UnaryOperatorsBinaryOperator_MinussDEBUGsBinaryOperator_Dividescopys ExpressionscsConstants break_listsFloatslsOperatorsclosingsidentify_symbols string_parser((sN/home/.hamster/barbieri/www.gustavobarbieri.com.br/freevo/expression_parser.pys?sX*1#'`"      A  . 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