Copilot.Core.Expr

Documentation

type Id = Int

A stream identifier.

type Name = String

A name of a trigger, an external variable, or an external function.

data Expr a where

Constructors

Const :: Type a -> a -> Expr a

Drop :: Type a -> DropIdx -> Id -> Expr a

Local :: Type a -> Type b -> Name -> Expr a -> Expr b -> Expr b

Var :: Type a -> Name -> Expr a

ExternVar :: Type a -> Name -> Maybe [a] -> Expr a

ExternFun :: Type a -> Name -> [UExpr] -> Maybe (Expr a) -> Maybe Tag -> Expr a

ExternArray :: Integral a => Type a -> Type b -> Name -> Int -> Expr a -> Maybe [[b]] -> Maybe Tag -> Expr b

Op1 :: Op1 a b -> Expr a -> Expr b

Op2 :: Op2 a b c -> Expr a -> Expr b -> Expr c

Op3 :: Op3 a b c d -> Expr a -> Expr b -> Expr c -> Expr d

data UExpr

A untyped expression (no phantom type).

Constructors

forall a . UExpr

Fields

uExprType :: Type a

uExprExpr :: Expr a

type DropIdx = Word16

An index for the drop operator.

type Tag = Int

A unique tag for external arrays/function calls.