X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=src%2Fparse.icl;h=0860819c20748b7d5a3b3a523691250172818c6f;hb=6e527e30012f8809594452cb9559b301b4a8afc6;hp=b3046e0ff3e7b13a7265a4f99e774cdb696cdc20;hpb=798defc398c2e3df810cc8fd3dccf861103006a5;p=cc1516.git

diff --git a/src/parse.icl b/src/parse.icl
index b3046e0..0860819 100644
--- a/src/parse.icl
+++ b/src/parse.icl
@@ -12,6 +12,7 @@ import Control.Applicative
 import Data.Func
 from Data.List import intercalate, replicate, instance Functor []
 from Text import class Text(concat), instance Text String
+import GenPrint
 
 import yard
 import lex
@@ -171,9 +172,10 @@ trans2 t f = satTok t >>= \(_, r).pure (f r)
 trans1 :: TokenValue a -> Parser Token a
 trans1 t r = trans2 t $ const r
 
+derive gPrint TokenValue
 derive gEq TokenValue
 satTok :: TokenValue -> Parser Token Token
-satTok t = satisfy $ eq t
+satTok t = top >>= \tok=:(pos, tv) -> if (eq t tok) (return tok) (fail <?> (printToString t, pos))
 	where
 		eq (IdentToken _) (_, IdentToken _) = True
 		eq (NumberToken _) (_, NumberToken _) = True