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| author | Andreas Källberg <anka.213@gmail.com> | 2020-09-05 20:23:07 +0200 |
|---|---|---|
| committer | Andreas Källberg <anka.213@gmail.com> | 2020-09-05 20:23:07 +0200 |
| commit | 7268253f5ae4b4883d28faa87b3e63295f04abfd (patch) | |
| tree | fb95bb40e3f8dece1deb018857b948a645003993 /src/compiler/GF/Grammar/Lexer.x | |
| parent | 1234c715fc6fe19d0c9fce794e4dfedf190b8d18 (diff) | |
MonadFail: Make backwards-compatible
Diffstat (limited to 'src/compiler/GF/Grammar/Lexer.x')
| -rw-r--r-- | src/compiler/GF/Grammar/Lexer.x | 3 |
1 files changed, 2 insertions, 1 deletions
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 |