1 files changed, 65 insertions, 0 deletions
diff --git a/TypeVar.hs b/TypeVar.hs
new file mode 100644
index 0000000..2dae613
--- /dev/null
+++ b/TypeVar.hs
@@ -0,0 +1,65 @@
+module TypeVar (
+	Number,
+
+	Name(..),
+
+	TypeOp(..),
+
+	Type(..),
+
+	Const(..),
+
+	Var(..),
+
+	mkEqualsType,
+	typeFunc
+	) where
+
+
+
+import Data.List
+
+
+
+type Number = Int
+
+data Name = Name { nameSpace :: [String]
+                 , nameId :: String } deriving (Eq)
+
+data TypeOp = TypeOp { tyOp :: Name } deriving (Eq)
+
+data Type = TypeVar { typeVar :: Name }
+          | AType { aType :: [Type]
+                  , aTypeOp :: TypeOp } deriving (Eq)
+
+data Const = Const { constName :: Name } deriving (Eq)
+
+data Var = Var { varName :: Name
+               , varTy :: Type } deriving (Eq)
+
+
+
+instance Show Name where
+    show a   =   intercalate "." (nameSpace a ++ [nameId a])
+
+instance Show TypeOp where
+    show a   =   "typeOp " ++ (show $ tyOp a)
+
+instance Show Type where
+    show (TypeVar tyVar)   =   "typeVar " ++ (show tyVar)
+    show (AType list typeOp) =   "type " ++ (show $ tyOp typeOp) ++ " " ++ (show list)
+
+instance Show Const where
+    show (Const a)   =   show a
+
+instance Show Var where
+    show (Var a _)   =   show a
+
+
+
+mkEqualsType :: Type -> Type
+mkEqualsType ty = typeFunc (AType [] (TypeOp (Name [] "bool"))) (typeFunc ty ty)
+
+
+typeFunc :: Type -> Type -> Type
+typeFunc ty1 ty2 = AType [ty1,ty2] (TypeOp (Name [] "->"))