{-# LANGUAGE Trustworthy #-} {-# LANGUAGE NoImplicitPrelude #-} {-# LANGUAGE PatternSynonyms #-} ----------------------------------------------------------------------------- -- | -- Module : Type.Reflection -- Copyright : (c) The University of Glasgow, CWI 2001--2017 -- License : BSD-style (see the file libraries/base/LICENSE) -- -- Maintainer : libraries@haskell.org -- Stability : stable -- Portability : non-portable (requires GADTs and compiler support) -- -- This provides a type-indexed type representation mechanism, similar to that -- described by, -- -- * Simon Peyton-Jones, Stephanie Weirich, Richard Eisenberg, -- Dimitrios Vytiniotis. "". -- /Proc. Philip Wadler's 60th birthday Festschrift/, Edinburgh (April 2016). -- -- The interface provides 'I.TypeRep', a type representation which can -- be safely decomposed and composed. See "Data.Dynamic" for an example of this. -- -- @since 4.10.0.0 -- ----------------------------------------------------------------------------- module Type.Reflection ( -- * The Typeable class I.Typeable , I.typeRep , I.withTypeable -- * Propositional equality , (:~:)(Refl) , (:~~:)(HRefl) -- * Type representations -- ** Type-Indexed , I.TypeRep , pattern I.TypeRep , I.typeOf , pattern I.App, pattern I.Con, pattern I.Con', pattern I.Fun , I.typeRepTyCon , I.rnfTypeRep , I.eqTypeRep , I.decTypeRep , I.typeRepKind , I.splitApps -- ** Quantified -- -- "Data.Typeable" exports a variant of this interface (named differently -- for backwards compatibility). , I.SomeTypeRep(..) , I.someTypeRep , I.someTypeRepTyCon , I.rnfSomeTypeRep -- * Type constructors , I.TyCon -- abstract, instance of: Eq, Show, Typeable -- For now don't export Module, to avoid name clashes , I.tyConPackage , I.tyConModule , I.tyConName , I.rnfTyCon -- * Module names , I.Module , I.moduleName, I.modulePackage, I.rnfModule ) where import qualified Data.Typeable.Internal as I import Data.Type.Equality