dupFieldErr, patSigErr, checkTupSize
) where
-import DynFlags ( DynFlag(Opt_WarnUnusedMatches, Opt_GlasgowExts, Opt_ScopedTypeVariables ) )
+import DynFlags ( DynFlag(Opt_WarnUnusedMatches, Opt_GlasgowExts, Opt_ScopedTypeVariables, Opt_OverloadedStrings ) )
import HsSyn
import RdrHsSyn ( extractHsRhoRdrTyVars )
import PrelNames ( eqClassName, integralClassName, geName, eqName,
negateName, minusName, lengthPName, indexPName,
plusIntegerName, fromIntegerName, timesIntegerName,
- ratioDataConName, fromRationalName )
+ ratioDataConName, fromRationalName, fromStringName )
import TypeRep ( funTyCon )
import Constants ( mAX_TUPLE_SIZE )
import Name ( Name )
where
doc = text "In a pattern type-signature"
+rnPat (LitPat lit@(HsString s))
+ = do { ovlStr <- doptM Opt_OverloadedStrings
+ ; if ovlStr then rnPat (mkNPat (mkHsIsString s) Nothing)
+ else do { rnLit lit; return (LitPat lit, emptyFVs) } } -- Same as below
rnPat (LitPat lit)
= rnLit lit `thenM_`
returnM (LitPat lit, emptyFVs)
-- and denominator (see DsUtils.mkIntegerLit)
in
returnM (HsFractional i from_rat_name, fvs `plusFV` extra_fvs)
+
+rnOverLit (HsIsString s _)
+ = lookupSyntaxName fromStringName `thenM` \ (from_string_name, fvs) ->
+ returnM (HsIsString s from_string_name, fvs)
\end{code}