X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=AST.icl;h=7b93acbe4170755986bdff0390bdff1412e5e802;hb=a8348a333a567e5a469d1e5f8ec6c3dafc051c91;hp=b9b94172766e1ab884653fa3ce48c2979d3cc376;hpb=df7fbaaf21817473f51525a2c8f03b0a5a37b823;p=cc1516.git

diff --git a/AST.icl b/AST.icl
index b9b9417..7b93acb 100644
--- a/AST.icl
+++ b/AST.icl
@@ -6,6 +6,7 @@ from Data.List import map, intercalate, replicate, flatten, isEmpty
 from Data.Func import $
 from Text import class Text(concat), instance Text String
 from Data.Maybe import :: Maybe, maybe
+import GenEq
 
 instance toString Pos where
 	toString {line,col} = concat [toString line, ":", toString col, " "]
@@ -76,20 +77,26 @@ instance print FieldSelector where
 	print FieldSnd = print "snd"
 	print FieldFst = print "fst"
 
+instance toString FieldSelector where
+    toString fs = concat $ print fs
+
 instance print VarDef where
 	print (VarDef i fs) = printersperse "." [i:flatten $ map print fs]
 
 instance print FunCall where
 	print (FunCall i args) = [i,"(":printersperse "," args] ++ [")"]
 
-instance print Expr where
-	print (VarExpr _ vd) = print vd
-	print (Op2Expr _ e1 o e2) = ["(":print e1] ++ [" ",case o of
+instance toString Op2 where
+	toString o = case o of
 		BiPlus = "+"; BiMinus = "-"; BiTimes = "*"; BiDivide = "/"
 		BiMod = "%"; BiEquals = "=="; BiLesser = "<"; BiGreater = ">"
 		BiLesserEq = "<="; BiGreaterEq = ">="; BiUnEqual = "!=";
 		BiAnd = "&&"; BiOr = "||"; BiCons = ":"
-		," ":print e2] ++ [")"]
+
+instance print Expr where
+	print (VarExpr _ vd) = print vd
+	print (Op2Expr _ e1 o e2) = ["(":print e1] ++ 
+		[" ",toString o, " ":print e2] ++ [")"]
 	print (Op1Expr _ o e) = ["(",case o of
 		UnNegation = "!"; UnMinus = "-"
 		:print e] ++ [")"]
@@ -103,3 +110,6 @@ instance print Expr where
 	print (FunExpr _ fc) = print fc
 	print (EmptyListExpr _) = ["[]"]
 	print (TupleExpr _ (e1, e2)) = ["(":print e1] ++ [",":print e2] ++ [")"]
+
+derive gEq Op2
+instance == Op2 where (==) o1 o2 = gEq{|*|} o1 o2