ghc-8.4.2: The GHC API

Safe Haskell	None
Language	Haskell2010

TcDeriv

Synopsis

tcDeriving :: [DerivInfo] -> [LDerivDecl GhcRn] -> TcM (TcGblEnv, Bag (InstInfo GhcRn), HsValBinds GhcRn)
data DerivInfo = DerivInfo {
- di_rep_tc :: TyCon
- di_clauses :: [LHsDerivingClause GhcRn]
- di_ctxt :: SDoc
}
mkDerivInfos :: [LTyClDecl GhcRn] -> TcM [DerivInfo]

Documentation

tcDeriving :: [DerivInfo] -> [LDerivDecl GhcRn] -> TcM (TcGblEnv, Bag (InstInfo GhcRn), HsValBinds GhcRn) Source #

data DerivInfo Source #

Stuff needed to process a datatype's `deriving` clauses

Constructors

DerivInfo
Fields di_rep_tc :: TyCon The data tycon for normal datatypes, or the representation tycon for data families di_clauses :: [LHsDerivingClause GhcRn] di_ctxt :: SDoc error context

mkDerivInfos :: [LTyClDecl GhcRn] -> TcM [DerivInfo] Source #

Extract `deriving` clauses of proper data type (skips data families)