From 9bd2b016ef2eedf73d2d00d22c009b0d3a8558d3 Mon Sep 17 00:00:00 2001 From: Adam Chlipala Date: Sat, 4 Oct 2008 20:05:50 -0400 Subject: Expand cases where expression wildcards are allowed --- src/elaborate.sml | 37 +++++++++++-------------------------- 1 file changed, 11 insertions(+), 26 deletions(-) (limited to 'src/elaborate.sml') diff --git a/src/elaborate.sml b/src/elaborate.sml index fce46209..b2d1f958 100644 --- a/src/elaborate.sml +++ b/src/elaborate.sml @@ -1411,32 +1411,13 @@ fun elabExp (env, denv) (eAll as (e, loc)) = ((L'.EModProj (n, ms, s), loc), t, []) end) - | L.EApp (e1, (L.EWild, _)) => + | L.EWild => let - val (e1', t1, gs1) = elabExp (env, denv) e1 - val (e1', t1, gs2) = elabHead (env, denv) e1' t1 - val (t1, gs3) = hnormCon (env, denv) t1 + val r = ref NONE + val c = cunif (loc, (L'.KType, loc)) in - case t1 of - (L'.TFun (dom, ran), _) => - let - val (dom, gs4) = normClassConstraint (env, denv) dom - in - case E.resolveClass env dom of - NONE => - let - val r = ref NONE - in - ((L'.EApp (e1', (L'.EUnif r, loc)), loc), - ran, [TypeClass (env, dom, r, loc)]) - end - | SOME pf => ((L'.EApp (e1', pf), loc), ran, gs1 @ gs2 @ enD gs3 @ enD gs4) - end - | _ => (expError env (OutOfContext (loc, SOME (e1', t1))); - (eerror, cerror, [])) + ((L'.EUnif r, loc), c, [TypeClass (env, c, r, loc)]) end - | L.EWild => (expError env (OutOfContext (loc, NONE)); - (eerror, cerror, [])) | L.EApp (e1, e2) => let @@ -3399,9 +3380,13 @@ fun elabFile basis topStr topSgn env file = ("Hnormed 1", p_con env (ElabOps.hnormCon env c1)), ("Hnormed 2", p_con env (ElabOps.hnormCon env c2))])) | TypeClass (env, c, r, loc) => - case E.resolveClass env c of - SOME e => r := SOME e - | NONE => expError env (Unresolvable (loc, c))) gs; + let + val c = ElabOps.hnormCon env c + in + case E.resolveClass env c of + SOME e => r := SOME e + | NONE => expError env (Unresolvable (loc, c)) + end) gs; (L'.DFfiStr ("Basis", basis_n, sgn), ErrorMsg.dummySpan) :: ds -- cgit v1.2.3