Mercurial > urweb
diff src/elaborate.sml @ 2190:22117edf8fd3
After a tricky debugging session, limit visibility of type-class instances from anonymous modules
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Sun, 01 Nov 2015 16:33:14 -0500 |
| parents | 1ecef02f67c5 |
| children | fb113569519e |
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--- a/src/elaborate.sml Sun Nov 01 14:17:09 2015 -0500 +++ b/src/elaborate.sml Sun Nov 01 16:33:14 2015 -0500 @@ -2481,7 +2481,7 @@ L'.SgnConst sgis => foldl (fn (sgi, cs) => case #1 sgi of - L'.SgiStr (x, _, _) => + L'.SgiStr (L'.Import, x, _, _) => (case E.projectStr env {sgn = sgn, str = st, field = x} of NONE => raise Fail "Elaborate: projectStr in collect" | SOME sgn' => @@ -2494,6 +2494,18 @@ D.assert env denv (c1, c2)) denv (collect true (st, sgn)) end +fun tcdump env = + Print.preface("Instances", p_list_sep Print.PD.newline + (fn (cl, ls) => + box [p_con env cl, + box [Print.PD.string "{", + p_list (fn (t, e) => + box [p_exp env e, + Print.PD.string " : ", + p_con env t]) ls, + Print.PD.string "}"]]) + (E.listClasses env)) + fun elabSgn_item ((sgi, loc), (env, denv, gs)) = ((*Print.preface ("elabSgi", SourcePrint.p_sgn_item (sgi, loc));*) case sgi of @@ -2695,7 +2707,7 @@ val (env', n) = E.pushStrNamed env x sgn' val denv' = dopenConstraints (loc, env', denv) {str = x, strs = []} in - ([(L'.SgiStr (x, n, sgn'), loc)], (env', denv', gs' @ gs)) + ([(L'.SgiStr (L'.Import, x, n, sgn'), loc)], (env', denv', gs' @ gs)) end | L.SgiSgn (x, sgn) => @@ -2814,7 +2826,7 @@ else (); (cons, vals, SS.add (sgns, x), strs)) - | L'.SgiStr (x, _, _) => + | L'.SgiStr (_, x, _, _) => (if SS.member (strs, x) then sgnError env (DuplicateStr (loc, x)) else @@ -2865,7 +2877,7 @@ (unifyKinds env k ck handle KUnify x => sgnError env (WhereWrongKind x); true) - | (L'.SgiStr (x', _, sgn''), _) => + | (L'.SgiStr (_, x', _, sgn''), _) => (case ms of [] => false | m :: ms' => @@ -2914,8 +2926,8 @@ map (fn (x, n, xs, xncs) => (L'.SgiDatatypeImp (x, n, str, strs, x, xs, xncs), loc)) dts | (L'.SgiClassAbs (x, n, k), loc) => [(L'.SgiClass (x, n, k, (L'.CModProj (str, strs, x), loc)), loc)] - | (L'.SgiStr (x, n, sgn), loc) => - [(L'.SgiStr (x, n, selfify env {str = str, strs = strs @ [x], sgn = sgn}), loc)] + | (L'.SgiStr (im, x, n, sgn), loc) => + [(L'.SgiStr (im, x, n, selfify env {str = str, strs = strs @ [x], sgn = sgn}), loc)] | x => [x], E.sgiBinds env sgi)) env sgis)), #2 sgn) | L'.SgnFun _ => sgn @@ -2987,7 +2999,7 @@ [(L'.DVal (x, n, t, (L'.EModProj (str, strs, x), loc)), loc)] else [] - | L'.SgiStr (x, n, sgn) => + | L'.SgiStr (_, x, n, sgn) => if isVisible x then [(L'.DStr (x, n, sgn, (L'.StrProj (m, x), loc)), loc)] else @@ -3033,8 +3045,8 @@ | L'.DVal (x, n, t, _) => [(L'.SgiVal (x, n, t), loc)] | L'.DValRec vis => map (fn (x, n, t, _) => (L'.SgiVal (x, n, t), loc)) vis | L'.DSgn (x, n, sgn) => [(L'.SgiSgn (x, n, sgn), loc)] - | L'.DStr (x, n, sgn, _) => [(L'.SgiStr (x, n, sgn), loc)] - | L'.DFfiStr (x, n, sgn) => [(L'.SgiStr (x, n, sgn), loc)] + | L'.DStr (x, n, sgn, _) => [(L'.SgiStr (L'.Import, x, n, sgn), loc)] + | L'.DFfiStr (x, n, sgn) => [(L'.SgiStr (L'.Import, x, n, sgn), loc)] | L'.DConstraint cs => [(L'.SgiConstraint cs, loc)] | L'.DExport _ => [] | L'.DTable (tn, x, n, c, _, pc, _, cc) => @@ -3344,10 +3356,10 @@ NONE | _ => NONE) - | L'.SgiStr (x, n2, sgn2) => + | L'.SgiStr (_, x, n2, sgn2) => seek (fn (env, sgi1All as (sgi1, loc)) => case sgi1 of - L'.SgiStr (x', n1, sgn1) => + L'.SgiStr (_, x', n1, sgn1) => if x = x' then let (* Don't forget to save & restore the @@ -3749,7 +3761,7 @@ else nd end - | L'.SgiStr (x, _, s) => + | L'.SgiStr (_, x, _, s) => (case #1 (hnormSgn env' s) of L'.SgnConst sgis' => naddMod (nd, x, (env', buildNeeded env' sgis')) | _ => nd) @@ -4496,7 +4508,7 @@ ((L'.SgiSgn (x, n, sgn), loc) :: sgis, cons, vals, sgns, strs) end - | L'.SgiStr (x, n, sgn) => + | L'.SgiStr (im, x, n, sgn) => let val (strs, x) = if SS.member (strs, x) then @@ -4504,7 +4516,7 @@ else (SS.add (strs, x), x) in - ((L'.SgiStr (x, n, sgn), loc) :: sgis, cons, vals, sgns, strs) + ((L'.SgiStr (im, x, n, sgn), loc) :: sgis, cons, vals, sgns, strs) end | L'.SgiConstraint _ => ((sgi, loc) :: sgis, cons, vals, sgns, strs) | L'.SgiClassAbs (x, n, k) => @@ -4610,7 +4622,7 @@ * question-mark identifiers generated previously by this * very code fragment. *) fun mungeName m = - if List.exists (fn (L'.SgiStr (x, _, _), _) => x = m + if List.exists (fn (L'.SgiStr (_, x, _, _), _) => x = m | _ => false) sgis then mungeName ("?" ^ m) else @@ -4619,7 +4631,7 @@ val m = mungeName m in ((L'.StrApp (str1', str2'), loc), - (L'.SgnConst ((L'.SgiStr (m, n, selfifyAt env {str = str2', sgn = sgn2}), loc) :: sgis), loc), + (L'.SgnConst ((L'.SgiStr (L'.Skip, m, n, selfifyAt env {str = str2', sgn = sgn2}), loc) :: sgis), loc), gs1 @ gs2) end | _ => raise Fail "Unable to hnormSgn in functor application") @@ -5001,7 +5013,7 @@ (); (*Print.preface("File", ElabPrint.p_file env file);*) - + (L'.DFfiStr ("Basis", basis_n, sgn), ErrorMsg.dummySpan) :: ds @ (L'.DStr ("Top", top_n, topSgn, topStr), ErrorMsg.dummySpan)