diff options
| author |  Adam Chlipala <adamc@hcoop.net> | 2010-04-18 14:52:13 -0400 |
|---|---|---|
| committer | Adam Chlipala <adamc@hcoop.net> | 2010-04-18 14:52:13 -0400 |
| commit | 06865640e7d3d210ba2538d0510c5d5678c5c07f (patch) | |
| tree | 13cb60e5e4e568dffc62bef3f10a3a14f0e2140a /src/iflow.sml | |
| parent | fafc70c0add76e6c5d9b174afd38fd99ed6ae4ef (diff) | |
Better handling of DELETE and UPDATE
Diffstat (limited to 'src/iflow.sml')
| -rw-r--r-- | src/iflow.sml | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/src/iflow.sml b/src/iflow.sml index 5a5b99c9..f35e82e8 100644 --- a/src/iflow.sml +++ b/src/iflow.sml @@ -798,12 +798,12 @@ fun builtFrom (db, {UseKnown = uk, Base = bs, Derived = d}) = in (uk andalso !(#Known (unNode d))) orelse List.exists (fn b => repOf b = d) bs - orelse case #Variety (unNode d) of - Dt0 _ => true - | Dt1 (_, d) => loop d - | Prim _ => true - | Recrd (xes, _) => List.all loop (SM.listItems (!xes)) - | Nothing => false + orelse (case #Variety (unNode d) of + Dt0 _ => true + | Dt1 (_, d) => loop d + | Prim _ => true + | Recrd (xes, _) => List.all loop (SM.listItems (!xes)) + | Nothing => false) end fun decomp e = @@ -1296,7 +1296,7 @@ fun useKeys () = val hyps = finder (hyps, []) in - findKeys (hyps, acc) + findKeys (hyps, a :: acc) end) | a :: hyps => findKeys (hyps, a :: acc) @@ -1313,7 +1313,7 @@ fun useKeys () = val (_, hs, _) = !hyps in - (*print "findKeys\n";*) + (*print "useKeys\n";*) loop hs end @@ -1411,10 +1411,10 @@ fun buildable uk (e, loc) = in ErrorMsg.errorAt loc "The information flow policy may be violated here."; Print.prefaces "Situation" [("User learns", p_exp e), - ("Hypotheses", Print.p_list p_atom hs)(*, - ("E-graph", Cc.p_database db)*)] + ("Hypotheses", Print.p_list p_atom hs), + ("E-graph", Cc.p_database db)] end - end + end fun checkPaths () = let @@ -1454,8 +1454,8 @@ fun doable pols (loc : ErrorMsg.span) = ("hyps", Print.p_list p_atom (#2 (!hyps)))];*) true) else - ((*Print.prefaces "No match" [("goals", Print.p_list p_atom goals), - ("hyps", Print.p_list p_atom (#2 (!hyps)))];*) + ((*Print.prefaces "No match" [("goals", Print.p_list p_atom goals)(*, + ("hyps", Print.p_list p_atom (#2 (!hyps)))*)];*) false)) pols then () else @@ -2005,7 +2005,8 @@ fun evalExp env (e as (_, loc)) k = val saved = St.stash () in - St.assert [AReln (Sql (tab ^ "$Old"), [Var old])]; + St.assert [AReln (Sql (tab ^ "$Old"), [Var old]), + AReln (Sql (tab), [Var old])]; decomp {Save = St.stash, Restore = St.reinstate, Add = fn a => St.assert [a]} p @@ -2049,7 +2050,8 @@ fun evalExp env (e as (_, loc)) k = val saved = St.stash () in St.assert [AReln (Sql (tab ^ "$New"), [Recd fs]), - AReln (Sql (tab ^ "$Old"), [Var old])]; + AReln (Sql (tab ^ "$Old"), [Var old]), + AReln (Sql tab, [Var old])]; decomp {Save = St.stash, Restore = St.reinstate, Add = fn a => St.assert [a]} p |