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| author | Andreas Källberg <anka.213@gmail.com> | 2020-10-08 17:41:44 +0200 |
|---|---|---|
| committer | Andreas Källberg <anka.213@gmail.com> | 2020-10-08 17:41:44 +0200 |
| commit | f2e4b89a22a1c7c7304e3a712e47e6d9f3f763e8 (patch) | |
| tree | b965a42585ce856abbb0c0d4bde7b13e02dd0999 /src/compiler | |
| parent | 670a58e7e724018de5624b75eeb39f04ffe12c98 (diff) | |
Fix syntax error problem for older versions of GHC
Diffstat (limited to 'src/compiler')
| -rw-r--r-- | src/compiler/GF/Grammar/Lexer.x | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/compiler/GF/Grammar/Lexer.x b/src/compiler/GF/Grammar/Lexer.x index fe455c58a..bde0aa064 100644 --- a/src/compiler/GF/Grammar/Lexer.x +++ b/src/compiler/GF/Grammar/Lexer.x @@ -35,7 +35,7 @@ $u = [.\n] -- universal: any character :- "--" [.]* ; -- Toss single line comments -"{-" ([$u # \-] | \- [$u # \}])* ("-")+ "}" ; +"{-" ([$u # \-] | \- [$u # \}])* ("-")+ "}" ; $white+ ; @rsyms { tok ident } @@ -138,7 +138,7 @@ data Token res = eitherResIdent eitherResIdent :: (Ident -> Token) -> Ident -> Token -eitherResIdent tv s = +eitherResIdent tv s = case Map.lookup s resWords of Just t -> t Nothing -> tv s @@ -285,6 +285,10 @@ instance Monad P where POk s a -> unP (k a) s PFailed posn err -> PFailed posn err +#if !(MIN_VERSION_base(4,13,0)) + -- Monad(fail) will be removed in GHC 8.8+ + fail = Fail.fail +#endif instance Fail.MonadFail P where fail msg = P $ \(_,AI posn _ _) -> PFailed posn msg |