Copyright	(C) 2015-2017 Ryan Scott
License	BSD-style (see the file LICENSE)
Maintainer	Ryan Scott
Portability	Template Haskell
Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.Enum.Deriving.Internal

Contents

Description

Exports functions to mechanically derive Enum instances.

Note: this is an internal module, and as such, the API presented here is not guaranteed to be stable, even between minor releases of this library.

Synopsis

`Enum`

deriveEnum :: Name -> Q [Dec] Source #

Generates an Enum instance declaration for the given data type or data family instance.

makeSucc :: Name -> Q Exp Source #

Generates a lambda expression which behaves like succ (without requiring an Enum instance).

makePred :: Name -> Q Exp Source #

Generates a lambda expression which behaves like pred (without requiring an Enum instance).

makeToEnum :: Name -> Q Exp Source #

Generates a lambda expression which behaves like toEnum (without requiring an Enum instance).

Generates a lambda expression which behaves like fromEnum (without requiring an Enum instance).

Generates a lambda expression which behaves like enumFrom (without requiring an Enum instance).

Generates a lambda expression which behaves like enumFromThen (without requiring an Enum instance).