definition module AST
from Data.Maybe import :: Maybe
-from StdOverloaded import class toString
+from StdOverloaded import class toString, class ==, class zero, class <
:: Pos = {line :: Int, col :: Int}
-:: AST = AST [VarDecl] [FunDecl]
-:: VarDecl = VarDecl Pos Type String Expr
+:: AST = AST [FunDecl]
+:: VarDecl = VarDecl Pos (Maybe Type) String Expr
:: Type
= TupleType (Type, Type)
| ListType Type
| IntType
| BoolType
| CharType
- | VarType
| VoidType
| (->>) infixl 7 Type Type
:: Expr
| IntExpr Pos Int
| CharExpr Pos Char
| BoolExpr Pos Bool
- | FunExpr Pos FunCall
+ | FunExpr Pos String [Expr] [FieldSelector]
| EmptyListExpr Pos
| TupleExpr Pos (Expr, Expr)
:: VarDef = VarDef String [FieldSelector]
:: Op2 = BiPlus | BiMinus | BiTimes | BiDivide | BiMod | BiEquals | BiLesser |
BiGreater | BiLesserEq | BiGreaterEq | BiUnEqual | BiAnd | BiOr | BiCons
:: FunDecl = FunDecl Pos String [String] (Maybe Type) [VarDecl] [Stmt]
-:: FunCall = FunCall String [Expr]
:: Stmt
= IfStmt Expr [Stmt] [Stmt]
| WhileStmt Expr [Stmt]
| AssStmt VarDef Expr
- | FunStmt FunCall
+ | FunStmt String [Expr]
| ReturnStmt (Maybe Expr)
-instance toString AST
-instance toString Type
instance toString Pos
-instance toString Op2
+instance toString Type
+instance toString AST
+
+instance zero Pos
+instance == Op1
instance == Op2
-instance == Type
-instance toString FieldSelector
+instance < Op1
+instance < Op2