Add solution to CS325 hw2

code/cs325-langs/src/PythonGen.hs

@@ -52,11 +52,13 @@ precedence Add = 3
 precedence Subtract = 3
 precedence Multiply = 4
 precedence Divide = 4
+precedence FloorDiv = 4
 precedence LessThan = 2
 precedence LessThanEq = 2
 precedence GreaterThan = 2
 precedence GreaterThanEq = 2
 precedence Equal = 2
+precedence NotEqual = 2
 precedence And = 1
 precedence Or = 0
 
@@ -65,6 +67,7 @@ opString Add = "+"
 opString Subtract = "-"
 opString Multiply = "*"
 opString Divide = "/"
+opString FloorDiv = "//"
 opString LessThan = "<"
 opString LessThanEq = "<="
 opString GreaterThan = ">"
@@ -120,6 +123,8 @@ translateExpr (In m c) =
     "(" ++ translateExpr m ++ ") in (" ++ translateExpr c ++ ")"
 translateExpr (NotIn m c) =
     "(" ++ translateExpr m ++ ") not in (" ++ translateExpr c ++ ")"
+translateExpr (Slice l r) =
+    maybe [] (parenth . translateExpr) l ++ ":" ++ maybe [] (parenth . translateExpr) r
 
 translatePat :: PyPat -> String
 translatePat (VarPat s) = s