    module Data.Derive.Enum where
    {-
    import Prelude

    example :: Sample

    instance Enum (Sample a) where
        toEnum 0 = First{}
        toEnum 1 = Second{}
        toEnum 2 = Third{}
        toEnum n = error $ "toEnum " ++ show n ++ ", not defined for " ++ "Sample"

        fromEnum (First{}) = 0
        fromEnum (Second{}) = 1
        fromEnum (Third{}) = 2

    -}
    -- GENERATED START

    import Data.Derive.DSL.DSL
    import Data.Derive.Internal.Derivation

    makeEnum :: Derivation
    makeEnum = derivationDSL "Enum" dslEnum

    dslEnum =
        List [Instance [] "Enum" (List [App "InsDecl" (List [App "FunBind"
        (List [Concat (List [MapCtor (App "Match" (List [App "Ident" (List
        [String "toEnum"]),List [App "PLit" (List [App "Signless" (List []
        ),App "Int" (List [CtorIndex])])],App "Nothing" (List []),App
        "UnGuardedRhs" (List [App "RecConstr" (List [App "UnQual" (List [
        App "Ident" (List [CtorName])]),List []])]),App "Nothing" (List []
        )])),List [App "Match" (List [App "Ident" (List [String "toEnum"])
        ,List [App "PVar" (List [App "Ident" (List [String "n"])])],App
        "Nothing" (List []),App "UnGuardedRhs" (List [App "InfixApp" (List
        [App "Var" (List [App "UnQual" (List [App "Ident" (List [String
        "error"])])]),App "QVarOp" (List [App "UnQual" (List [App "Symbol"
        (List [String "$"])])]),Fold (App "InfixApp" (List [Head,App
        "QVarOp" (List [App "UnQual" (List [App "Symbol" (List [String
        "++"])])]),Tail])) (List [App "Lit" (List [App "String" (List [
        String "toEnum "])]),App "App" (List [App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "show"])])]),App "Var" (
        List [App "UnQual" (List [App "Ident" (List [String "n"])])])]),
        App "Lit" (List [App "String" (List [String ", not defined for "])
        ]),App "Lit" (List [App "String" (List [DataName])])])])]),App
        "Nothing" (List [])])]])])]),App "InsDecl" (List [App "FunBind" (
        List [MapCtor (App "Match" (List [App "Ident" (List [String
        "fromEnum"]),List [App "PParen" (List [App "PRec" (List [App
        "UnQual" (List [App "Ident" (List [CtorName])]),List []])])],App
        "Nothing" (List []),App "UnGuardedRhs" (List [App "Lit" (List [App
        "Int" (List [CtorIndex])])]),App "Nothing" (List [])]))])])])]
    -- GENERATED STOP