Add a WARNING pragma

[ghc-hetmet.git] / compiler / parser / Lexer.x

diff --git a/compiler/parser/Lexer.x b/compiler/parser/Lexer.x
index b9abf7a..b3cab49 100644 (file)
--- a/compiler/parser/Lexer.x
+++ b/compiler/parser/Lexer.x
@@ -31,6 +31,8 @@
 -- Note that Alex itself generates code with with some unused bindings and
 -- without type signatures, so removing the flag might not be possible.
 
+{-# OPTIONS_GHC -funbox-strict-fields #-}
+
 module Lexer (
    Token(..), lexer, pragState, mkPState, PState(..),
    P(..), ParseResult(..), getSrcLoc, 
@@ -246,6 +248,8 @@ $tab+         { warn Opt_WarnTabs (text "Tab character") }
        $whitechar* (NO(T?)INLINE|no(t?)inline)
                                        { token (ITspec_inline_prag False) }
   "{-#" $whitechar* (SOURCE|source)    { token ITsource_prag }
+  "{-#" $whitechar* (WARNING|warning)
+                                       { token ITwarning_prag }
   "{-#" $whitechar* (DEPRECATED|deprecated)
                                        { token ITdeprecated_prag }
   "{-#" $whitechar* (SCC|scc)          { token ITscc_prag }
@@ -464,6 +468,7 @@ data Token
   | ITspec_inline_prag Bool    -- SPECIALISE INLINE (or NOINLINE)
   | ITsource_prag
   | ITrules_prag
+  | ITwarning_prag
   | ITdeprecated_prag
   | ITline_prag
   | ITscc_prag