1 {-# LANGUAGE FlexibleContexts #-}
2 {-# LANGUAGE FlexibleInstances #-}
3 {-# LANGUAGE MultiParamTypeClasses #-}
4 {-# LANGUAGE PatternSynonyms #-}
5 {-# LANGUAGE TypeFamilies #-}
6 {-# OPTIONS_GHC -fno-warn-orphans #-}
7 module Language.Symantic.Type.List where
10 import Data.Type.Equality ((:~:)(Refl))
11 import Language.Symantic.Type.Root
12 import Language.Symantic.Type.Type0
13 import Language.Symantic.Type.Type1
17 type Type_List = Type_Type1 (Proxy [])
19 pattern Type_List :: root a -> Type_List root ([] a)
20 pattern Type_List a = Type_Type1 Proxy a
22 instance Constraint_Type Eq root => Constraint_Type Eq (Type_List root) where
23 constraint_type c (Type_Type1 _ a)
24 | Just Dict <- constraint_type c a
26 constraint_type _c _ = Nothing
27 instance Constraint_Type Ord root => Constraint_Type Ord (Type_List root) where
28 constraint_type c (Type_Type1 _ a)
29 | Just Dict <- constraint_type c a
31 constraint_type _c _ = Nothing
32 instance Constraint_Type Monoid (Type_List root) where
33 constraint_type _c Type_Type1{} = Just Dict
34 instance Constraint_Type Num (Type_List root)
35 instance Constraint_Type Integral (Type_List root)
36 instance Constraint_Type1 Functor (Type_List root) where
37 constraint_type1 _c Type_Type1{} = Just Dict
38 instance Constraint_Type1 Applicative (Type_List root) where
39 constraint_type1 _c Type_Type1{} = Just Dict
40 instance Constraint_Type1 Foldable (Type_List root) where
41 constraint_type1 _c Type_Type1{} = Just Dict
42 instance Constraint_Type1 Traversable (Type_List root) where
43 constraint_type1 _c Type_Type1{} = Just Dict
44 instance Constraint_Type1 Monad (Type_List root) where
45 constraint_type1 _c Type_Type1{} = Just Dict
48 Eq_Type (Type_List root) where
49 eq_type (Type_Type1 _px1 a1) (Type_Type1 _px2 a2)
50 | Just Refl <- a1 `eq_type` a2
54 Eq_Type1 (Type_List root) where
55 eq_type1 Type_Type1{} Type_Type1{}
57 instance -- String_from_Type
58 String_from_Type root =>
59 String_from_Type (Type_List root) where
60 string_from_type (Type_Type1 _f a) =
61 "[" ++ string_from_type a ++ "]"
63 -- | Inject 'Type_List' within a root type.
65 :: Lift_Type_Root Type_List root
68 type_list = lift_type_root . Type_Type1 (Proxy::Proxy [])