Language.Haskell.TH.Lift.Internal

Helper functions used in code that Language.Haskell.TH.Lift generates.

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.

Documentation

errorQuoteExp :: String -> Q Exp

A type-restricted version of error that ensures makeLift always returns a value of type q Exp (where q is an instance of Quote), even when used on an empty datatype.

unsafeSpliceCoerce :: forall a. Q Exp -> Q (TExp a)

This is a cargo-culted version of unsafeSpliceCoerce from the th-compat library, which has been copied here to avoid incurring a library dependency.

Only available when built with template-haskell-2.9.0.0 or later.