    module Data.Derive.EnumCyclic where
    {-
    import Prelude(Enum)

    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

        succ a = if b == length [First{},Second{},Third{}] then toEnum 0 else toEnum (b+1)
            where b = fromEnum a

        pred a = if b == 0 then toEnum (length [First{},Second{},Third{}]) else toEnum (b-1)
            where b = fromEnum a

    -}
    -- GENERATED START

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

    makeEnumCyclic :: Derivation
    makeEnumCyclic = derivationDSL "EnumCyclic" dslEnumCyclic

    dslEnumCyclic =
        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 "Int" (List [
        CtorIndex])])],App "Nothing" (List []),App "UnGuardedRhs" (List [
        App "RecConstr" (List [App "UnQual" (List [App "Ident" (List [
        CtorName])]),List []])]),App "BDecls" (List [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 [Concat (List [String
        ", not defined for ",DataName])])])])])]),App "BDecls" (List [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 "BDecls" (List [List []])]))])]),App "InsDecl"
        (List [App "FunBind" (List [List [App "Match" (List [App "Ident" (
        List [String "succ"]),List [App "PVar" (List [App "Ident" (List [
        String "a"])])],App "Nothing" (List []),App "UnGuardedRhs" (List [
        App "If" (List [App "InfixApp" (List [App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "b"])])]),App "QVarOp" (
        List [App "UnQual" (List [App "Symbol" (List [String "=="])])]),
        App "App" (List [App "Var" (List [App "UnQual" (List [App "Ident"
        (List [String "length"])])]),App "List" (List [MapCtor (App
        "RecConstr" (List [App "UnQual" (List [App "Ident" (List [CtorName
        ])]),List []]))])])]),App "App" (List [App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "toEnum"])])]),App "Lit"
        (List [App "Int" (List [Int 0])])]),App "App" (List [App "Var" (
        List [App "UnQual" (List [App "Ident" (List [String "toEnum"])])])
        ,App "Paren" (List [App "InfixApp" (List [App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "b"])])]),App "QVarOp" (
        List [App "UnQual" (List [App "Symbol" (List [String "+"])])]),App
        "Lit" (List [App "Int" (List [Int 1])])])])])])]),App "BDecls" (
        List [List [App "PatBind" (List [App "PVar" (List [App "Ident" (
        List [String "b"])]),App "Nothing" (List []),App "UnGuardedRhs" (
        List [App "App" (List [App "Var" (List [App "UnQual" (List [App
        "Ident" (List [String "fromEnum"])])]),App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "a"])])])])]),App
        "BDecls" (List [List []])])]])])]])]),App "InsDecl" (List [App
        "FunBind" (List [List [App "Match" (List [App "Ident" (List [
        String "pred"]),List [App "PVar" (List [App "Ident" (List [String
        "a"])])],App "Nothing" (List []),App "UnGuardedRhs" (List [App
        "If" (List [App "InfixApp" (List [App "Var" (List [App "UnQual" (
        List [App "Ident" (List [String "b"])])]),App "QVarOp" (List [App
        "UnQual" (List [App "Symbol" (List [String "=="])])]),App "Lit" (
        List [App "Int" (List [Int 0])])]),App "App" (List [App "Var" (
        List [App "UnQual" (List [App "Ident" (List [String "toEnum"])])])
        ,App "Paren" (List [App "App" (List [App "Var" (List [App "UnQual"
        (List [App "Ident" (List [String "length"])])]),App "List" (List [
        MapCtor (App "RecConstr" (List [App "UnQual" (List [App "Ident" (
        List [CtorName])]),List []]))])])])]),App "App" (List [App "Var" (
        List [App "UnQual" (List [App "Ident" (List [String "toEnum"])])])
        ,App "Paren" (List [App "InfixApp" (List [App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "b"])])]),App "QVarOp" (
        List [App "UnQual" (List [App "Symbol" (List [String "-"])])]),App
        "Lit" (List [App "Int" (List [Int 1])])])])])])]),App "BDecls" (
        List [List [App "PatBind" (List [App "PVar" (List [App "Ident" (
        List [String "b"])]),App "Nothing" (List []),App "UnGuardedRhs" (
        List [App "App" (List [App "Var" (List [App "UnQual" (List [App
        "Ident" (List [String "fromEnum"])])]),App "Var" (List [App
        "UnQual" (List [App "Ident" (List [String "a"])])])])]),App
        "BDecls" (List [List []])])]])])]])])])]
    -- GENERATED STOP