From 7268253f5ae4b4883d28faa87b3e63295f04abfd Mon Sep 17 00:00:00 2001 From: Andreas Källberg Date: Sat, 5 Sep 2020 20:23:07 +0200 Subject: MonadFail: Make backwards-compatible --- src/compiler/GF/Grammar/Lexer.x | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/compiler/GF/Grammar/Lexer.x') diff --git a/src/compiler/GF/Grammar/Lexer.x b/src/compiler/GF/Grammar/Lexer.x index 57577ba16..fe455c58a 100644 --- a/src/compiler/GF/Grammar/Lexer.x +++ b/src/compiler/GF/Grammar/Lexer.x @@ -19,6 +19,7 @@ import qualified Data.Map as Map import Data.Word(Word8) import Data.Char(readLitChar) --import Debug.Trace(trace) +import qualified Control.Monad.Fail as Fail } @@ -285,7 +286,7 @@ instance Monad P where PFailed posn err -> PFailed posn err -instance MonadFail P where +instance Fail.MonadFail P where fail msg = P $ \(_,AI posn _ _) -> PFailed posn msg -- cgit v1.2.3