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diff src/elab_env.sig @ 1742:fca4a6d05ac1

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More diagnostic information about some type class resolution failures
author Adam Chlipala <adam@chlipala.net>
date Fri, 04 May 2012 10:33:04 -0400
parents c7b9a33c26c8
children 100352dbae36
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line diff
--- a/src/elab_env.sig	Fri May 04 10:07:27 2012 -0400
+++ b/src/elab_env.sig	Fri May 04 10:33:04 2012 -0400
@@ -73,6 +73,7 @@
     val isClass : env -> Elab.con -> bool
     val resolveClass : (Elab.con -> Elab.con) -> (Elab.con * Elab.con -> bool)
                        -> env -> Elab.con -> Elab.exp option
+    val resolveFailureCause : unit -> Elab.con option
     val listClasses : env -> (Elab.con * (Elab.con * Elab.exp) list) list
 
     val pushERel : env -> string -> Elab.con -> env