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gf-core/gf-book/examples/chapter8/CalculatorJ.gf
2011-01-11 15:46:43 +00:00

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concrete CalculatorJ of Calculator = open Prelude in {
lincat
Exp = SS ;
lin
EPlus = postfix "iadd" ;
EMinus = postfix "isub" ;
ETimes = postfix "imul" ;
EDiv = postfix "idiv" ;
EInt i = ss ("ldc" ++ i.s) ;
oper
postfix : Str -> SS -> SS -> SS = \op,x,y ->
ss (x.s ++ ";" ++ y.s ++ ";" ++ op) ;
}