diff options
Diffstat (limited to 'src/Parser/Core.hs')
| -rw-r--r-- | src/Parser/Core.hs | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/src/Parser/Core.hs b/src/Parser/Core.hs index ab6079a..f40889a 100644 --- a/src/Parser/Core.hs +++ b/src/Parser/Core.hs @@ -134,11 +134,19 @@ unifyExpr off pa expr = if | Just (Refl :: FunctionType a :~: b) <- eqT -> do - case exprArgs expr of - remaining - | anull remaining -> return (FunctionEval expr) - | otherwise -> parseError $ FancyError off $ S.singleton $ ErrorFail $ T.unpack $ - "missing function arguments" + let FunctionArguments remaining = exprArgs expr + showType ( Nothing, SomeArgumentType atype ) = "`<" <> textExprType atype <> ">'" + showType ( Just (ArgumentKeyword kw), SomeArgumentType atype ) = "`" <> kw <> " <" <> textExprType atype <> ">'" + err = parseError . FancyError off . S.singleton . ErrorFail . T.unpack + + defaults <- forM (M.toAscList remaining) $ \case + arg@(_, SomeArgumentType NoDefault) -> err $ "missing " <> showType arg <> " argument" + (kw, SomeArgumentType (ExprDefault def)) -> return (kw, SomeExpr def) + (kw, SomeArgumentType atype@ContextDefault) -> do + SomeExpr context <- gets testContext + context' <- unifyExpr off atype context + return (kw, SomeExpr context') + return (FunctionEval $ ArgsApp (FunctionArguments $ M.fromAscList defaults) expr) | Just (Refl :: DynamicType :~: b) <- eqT , Undefined msg <- expr |