definition module AST
from Data.Maybe import :: Maybe
-from StdOverloaded import class toString, class ==
+from StdOverloaded import class toString, class ==, class zero, class <
:: Pos = {line :: Int, col :: Int}
:: AST = AST [FunDecl]
:: VarDecl = VarDecl Pos (Maybe Type) String Expr
+:: TVar :== String
:: Type
= TupleType (Type, Type)
| ListType Type
- | IdType String
+ | IdType TVar
| IntType
| BoolType
| CharType
| VoidType
+ | FuncType Type
| (->>) infixl 7 Type Type
:: Expr
= VarExpr Pos VarDef
= IfStmt Expr [Stmt] [Stmt]
| WhileStmt Expr [Stmt]
| AssStmt VarDef Expr
- | FunStmt String [Expr]
+ | FunStmt String [Expr] [FieldSelector]
| ReturnStmt (Maybe Expr)
instance toString Pos
instance toString Type
instance toString AST
+instance toString FieldSelector
+instance toString Op2
+instance toString Expr
+instance toString VarDecl
+
+instance zero Pos
+instance == Op1
+instance == Op2
+instance < Op1
+instance < Op2
+instance == Type