diff options
| -rw-r--r-- | compiler/parser/Parser.y.pp | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/compiler/parser/Parser.y.pp b/compiler/parser/Parser.y.pp index fd5b02c83b..5a181cf53c 100644 --- a/compiler/parser/Parser.y.pp +++ b/compiler/parser/Parser.y.pp @@ -1208,15 +1208,20 @@ docdecld :: { LDocDecl } | docsection { L1 (case (unLoc $1) of (n, doc) -> DocGroup n doc) } decl :: { Located (OrdList (LHsDecl RdrName)) } - : sigdecl { $1 } - | '!' aexp rhs {% do { pat <- checkPattern $2; - return (LL $ unitOL $ LL $ ValD ( - PatBind (LL $ BangPat pat) (unLoc $3) - placeHolderType placeHolderNames)) } } - | infixexp opt_sig rhs {% do { r <- checkValDef $1 $2 $3; - let { l = comb2 $1 $> }; - return $! (sL l (unitOL $! (sL l $ ValD r))) } } - | docdecl { LL $ unitOL $1 } + : sigdecl { $1 } + + | '!' aexp rhs {% do { let { e = LL (SectionR (LL (HsVar bang_RDR)) $2) }; + pat <- checkPattern e; + return $ LL $ unitOL $ LL $ ValD $ + PatBind pat (unLoc $3) + placeHolderType placeHolderNames } } + -- Turn it all into an expression so that + -- checkPattern can check that bangs are enabled + + | infixexp opt_sig rhs {% do { r <- checkValDef $1 $2 $3; + let { l = comb2 $1 $> }; + return $! (sL l (unitOL $! (sL l $ ValD r))) } } + | docdecl { LL $ unitOL $1 } rhs :: { Located (GRHSs RdrName) } : '=' exp wherebinds { sL (comb3 $1 $2 $3) $ GRHSs (unguardedRHS $2) (unLoc $3) } |