From a7d7542dc646a5fd124ef71e71ce260889f1701b Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Tue, 2 Feb 2016 19:24:50 +0100
Subject: Moved to 1415 directory

---
 1415/files/practicum/RefactorXX.icl | 62 +++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 1415/files/practicum/RefactorXX.icl

(limited to '1415/files/practicum/RefactorXX.icl')

diff --git a/1415/files/practicum/RefactorXX.icl b/1415/files/practicum/RefactorXX.icl
new file mode 100644
index 0000000..e7d249f
--- /dev/null
+++ b/1415/files/practicum/RefactorXX.icl
@@ -0,0 +1,62 @@
+implementation module RefactorXX
+
+import StdClass, StdInt, StdList, StdOverloaded, StdString
+
+//Start = map toString [E1,E2,E3,E4,E5]
+
+/*
+E1 = (let x = 42 - 3 in x / 0) + (let y = 6 in y * y)
+E2 = let x = 42 in x + (let x = 58 in x)
+E3 = let x = 1 in let y = 2 in let x = 3 in 4
+E4 = let x = 1 in x + y
+E5 = (let x = 1 in x) * x
+E6 = let x = 5 in let y = x in 0
+*/
+
+E1 = (OP (LET "x" (OP (NR 42) MIN (NR 3)) (OP (VAR "x") DIV (NR 0))) PLUS (LET "y" (NR 6) (OP (VAR "y") MUL (VAR "y"))))
+E2 = (LET "x" (NR 42) (OP (VAR "x") PLUS (LET "x" (NR 58) (VAR "x"))))
+E3 = (LET "x" (NR 1) (LET "y" (NR 2) (LET "x" (NR 3) (NR 4))))
+E4 = (LET "x" (NR 1) (OP (VAR "x") PLUS (VAR "y")))
+E5 = (OP (LET "x" (NR 1) (VAR "x")) MUL (VAR "x"))
+E6 = (LET "x" (NR 5) (LET "y" (VAR "x") (NR 0)))
+
+::	Expr			= NR   Int
+					| VAR  Name
+					| OP   Expr Operator Expr
+					| LET  Name     Expr Expr
+::	Name			:== String
+::	Operator		= PLUS | MIN | MUL | DIV
+::	Val a			= Result a | Undef
+
+class fail          c :: c a
+class return        c :: a -> c a
+class (>>=) infix 0 c :: (c a) (a -> c b) -> c b
+class Monad         c | return, >>= c
+class MonadFail     c | Monad, fail c
+
+instance fail   Val where // maak deze instance af
+instance return Val where // maak deze instance af
+instance >>=    Val where // maak deze instance af
+
+instance fail   []  where // maak deze instance af
+instance return []  where // maak deze instance af
+instance >>=    []  where // maak deze instance af
+
+//  expressies afdrukken:
+instance toString Expr where // maak deze instance af
+
+//	vrije variabelen:
+free								:: Expr -> [Name]
+free // maak deze functie af
+
+//	verwijder deelexpressies met ongebruikte let-variabelen:
+remove_unused_lets					:: Expr -> Expr
+remove_unused_lets // maak deze functie af
+
+//  evaluator, monadische stijl:
+eval								:: Expr -> c Int | MonadFail c
+eval // maak deze functie af
+
+
+Start :: [[Int]]
+Start = [eval E1, eval E2, eval E3, eval E4, eval E5]
-- 
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