import HsSyn ( HsExpr(..), LHsExpr, MatchGroup(..),
Match(..), LMatch, GRHSs(..), GRHS(..),
Stmt(..), LStmt, HsMatchContext(..), HsStmtContext(..),
- pprMatch, isIrrefutableHsPat,
+ pprMatch, isIrrefutableHsPat, mkHsCoerce,
pprMatchContext, pprStmtContext,
noSyntaxExpr, matchGroupArity, pprMatches,
ExprCoFn )
import PrelNames ( bindMName, returnMName, mfixName, thenMName, failMName )
import Id ( idType, mkLocalId )
import TyCon ( TyCon )
-import Util ( isSingleton )
import Outputable
import SrcLoc ( Located(..), getLoc )
import ErrUtils ( Message )
-
-import List ( nub )
\end{code}
%************************************************************************
doc = sep [ ptext SLIT("The lambda expression")
<+> quotes (pprSetDepth 1 $ pprMatches LambdaExpr match),
-- The pprSetDepth makes the abstraction print briefly
- ptext SLIT("has") <+> speakNOf n_pats (ptext SLIT("arguments"))]
+ ptext SLIT("has") <+> speakNOf n_pats (ptext SLIT("argument"))]
match_ctxt = MC { mc_what = LambdaExpr,
mc_body = tcPolyExpr }
\end{code}
-- poly_id may have a polymorphic type
-- but mono_ty is just a monomorphic type variable
; co_fn <- tcSubExp (idType poly_id) mono_ty
- ; return (HsCoerce co_fn (HsVar poly_id)) }
+ ; return (mkHsCoerce co_fn (HsVar poly_id)) }
tcMDoStmt tc_rhs ctxt stmt res_ty thing_inside
= pprPanic "tcMDoStmt: unexpected Stmt" (ppr stmt)