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cleaned up Calculator example

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aarne
2007-09-04 20:51:26 +00:00
parent 6150508b4e
commit e2b9657f79
4 changed files with 33 additions and 6 deletions
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6
examples/tutorial/calculator/Calculator.gf
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@@ -6,7 +6,7 @@ abstract Calculator = {
fun
PEmpty : Prog ;
PDecl : Exp -> (Var -> Prog) -> Prog ;
PInit : Exp -> (Var -> Prog) -> Prog ;
PAss : Var -> Exp -> Prog -> Prog ;
EPlus, EMinus, ETimes, EDiv : Exp -> Exp -> Exp ;
@@ -18,8 +18,8 @@ abstract Calculator = {
def
ex1 =
PDecl (EPlus (EInt 2) (EInt 3)) (\x ->
PDecl (EPlus (EVar x) (EInt 1)) (\y ->
PInit (EPlus (EInt 2) (EInt 3)) (\x ->
PInit (EPlus (EVar x) (EInt 1)) (\y ->
PAss x (EPlus (EVar x) (ETimes (EInt 9) (EVar y))) PEmpty)) ;
}

2
examples/tutorial/calculator/CalculatorC.gf
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@@ -10,7 +10,7 @@ concrete CalculatorC of Calculator = open Prelude, Formal in {
lin
PEmpty = ss [] ;
PDecl exp prog = ss ("int" ++ prog.$0 ++ "=" ++ top exp ++ ";" ++ prog.s) ;
PInit exp prog = ss ("int" ++ prog.$0 ++ "=" ++ top exp ++ ";" ++ prog.s) ;
PAss vr exp prog = ss (vr.s ++ "=" ++ top exp ++ ";" ++ prog.s) ;
EPlus = infixl 0 "+" ;

27
examples/tutorial/calculator/CalculatorE.gf Normal file
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@@ -0,0 +1,27 @@
--# -path=.:prelude
concrete CalculatorE of Calculator = open Prelude in {
flags lexer=codevar ; unlexer=unwords ;
lincat
Prog, Exp, Var = SS ;
lin
PEmpty = ss [] ;
PInit exp prog = ss ("initialize" ++ prog.$0 ++ "as" ++ exp.s ++ PAUSE ++ prog.s) ;
PAss vr exp prog = ss ("redefine" ++ vr.s ++ "as" ++ exp.s ++ PAUSE ++ prog.s) ;
EPlus = infix "plus" ;
EMinus = infix "minus" ;
ETimes = infix "times" ;
EDiv = infix ["divided by"] ;
EInt i = i ;
EVar x = x ;
oper
infix : Str -> SS -> SS -> SS = \op,x,y ->
ss (x.s ++ op ++ y.s ++ PAUSE) ;
PAUSE = "PAUSE" ;
}

4
examples/tutorial/calculator/CalculatorJ.gf
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@@ -9,13 +9,13 @@ concrete CalculatorJ of Calculator = open Prelude in {
lin
PEmpty = ss [] ;
PDecl exp prog = ss (exp.s ++ ";" ++ prog.s) ;
PInit exp prog = ss (exp.s ++ ";" ++ "istore" ++ prog.$0 ++ ";" ++ prog.s) ;
PAss vr exp prog = ss (exp.s ++ ";" ++ "istore" ++ vr.s ++ ";" ++ prog.s) ;
EPlus = postfix "iadd" ;
EMinus = postfix "isub" ;
ETimes = postfix "imul" ;
EDiv = postfix "imul" ;
EDiv = postfix "idiv" ;
EInt = prefixSS "iconst" ;
EVar = prefixSS "iload" ;