diff options
Diffstat (limited to 'src/elab_err.sml')
| -rw-r--r-- | src/elab_err.sml | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/elab_err.sml b/src/elab_err.sml index 6d9bd2e6..80de9497 100644 --- a/src/elab_err.sml +++ b/src/elab_err.sml @@ -119,7 +119,7 @@ datatype cunify_error = | CIncompatible of con * con | CExplicitness of con * con | CKindof of kind * con * string - | CRecordFailure of con * con + | CRecordFailure of con * con * (con * con * con) option fun cunifyError env err = case err of @@ -144,10 +144,16 @@ fun cunifyError env err = eprefaces ("Unexpected kind for kindof calculation (expecting " ^ expected ^ ")") [("Kind", p_kind env k), ("Con", p_con env c)] - | CRecordFailure (c1, c2) => + | CRecordFailure (c1, c2, fo) => eprefaces "Can't unify record constructors" - [("Summary 1", p_con env c1), - ("Summary 2", p_con env c2)] + (("Summary 1", p_con env c1) + :: ("Summary 2", p_con env c2) + :: (case fo of + NONE => [] + | SOME (nm, t1, t2) => + [("Field", p_con env nm), + ("Value 1", p_con env t1), + ("Value 2", p_con env t2)])) datatype exp_error = UnboundExp of ErrorMsg.span * string |