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, " "]
instance toString AST where
toString (AST v f) = concat (
indent :: Int [String] -> [String]
indent i rest = replicate i "\t" ++ rest
-instance print FunType where
- print (FunType at rt) = printersperse " " at ++
- [if (isEmpty at) "" "->":maybe ["Void"] print rt]
-
instance print VarDecl where
print (VarDecl _ t i e) = print t ++ [" ":i:"=":print e] ++ [";"]
+instance toString Type where
+ toString t = concat $ print t
+
instance print Type where
print (TupleType (t1, t2)) = ["(":print t1] ++ [",":print t2] ++ [")"]
print (ListType t) = ["[":print t] ++ ["]"]
print BoolType = print "Bool"
print CharType = print "Char"
print VarType = print "var"
+ print VoidType = print "Void"
+ print (t1 ->> t2) = print t1 ++ [" -> ":print t2]
instance print String where
print s = [s]
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] ++ [")"]
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