diff options
author | 2008-07-01 09:29:49 -0400 | |
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committer | 2008-07-01 09:29:49 -0400 | |
commit | cc2b6499cd2ea61f8882419cc5915c3428d5f5b7 (patch) | |
tree | 137254c1e98dbf1c00c2f002c254766b4c75cd80 /src/elaborate.sml | |
parent | 8b56aa658fa544d041a2eac45c87d76f4597f94d (diff) |
Factor some operations into ElabOps
Diffstat (limited to 'src/elaborate.sml')
-rw-r--r-- | src/elaborate.sml | 107 |
1 files changed, 2 insertions, 105 deletions
diff --git a/src/elaborate.sml b/src/elaborate.sml index ceca9b4f..4323677d 100644 --- a/src/elaborate.sml +++ b/src/elaborate.sml @@ -416,32 +416,8 @@ fun cunifyError env err = eprefaces "Can't unify record constructors" [] exception SynUnif = E.SynUnif -val liftConInCon = E.liftConInCon - -val subConInCon = - U.Con.mapB {kind = fn k => k, - con = fn (xn, rep) => fn c => - case c of - L'.CRel xn' => - (case Int.compare (xn', xn) of - EQUAL => #1 rep - | GREATER => L'.CRel (xn' - 1) - | LESS => c) - (*| L'.CUnif _ => raise SynUnif*) - | _ => c, - bind = fn ((xn, rep), U.Con.Rel _) => (xn+1, liftConInCon 0 rep) - | (ctx, _) => ctx} - -fun subStrInSgn (m1, m2) = - U.Sgn.map {kind = fn k => k, - con = fn c as L'.CModProj (m1', ms, x) => - if m1 = m1' then - L'.CModProj (m2, ms, x) - else - c - | c => c, - sgn_item = fn sgi => sgi, - sgn = fn sgn => sgn} + +open ElabOps type record_summary = { fields : (L'.con * L'.con) list, @@ -631,85 +607,6 @@ and unifySummaries env (k, s1 : record_summary, s2 : record_summary) = pairOffUnifs (unifs1, unifs2) end -and hnormCon env (cAll as (c, loc)) = - case c of - L'.CUnif (_, _, _, ref (SOME c)) => hnormCon env c - - | L'.CNamed xn => - (case E.lookupCNamed env xn of - (_, _, SOME c') => hnormCon env c' - | _ => cAll) - - | L'.CModProj (n, ms, x) => - let - val (_, sgn) = E.lookupStrNamed env n - val (str, sgn) = foldl (fn (m, (str, sgn)) => - case E.projectStr env {sgn = sgn, str = str, field = m} of - NONE => raise Fail "hnormCon: Unknown substructure" - | SOME sgn => ((L'.StrProj (str, m), loc), sgn)) - ((L'.StrVar n, loc), sgn) ms - in - case E.projectCon env {sgn = sgn, str = str, field = x} of - NONE => raise Fail "kindof: Unknown con in structure" - | SOME (_, NONE) => cAll - | SOME (_, SOME c) => hnormCon env c - end - - | L'.CApp (c1, c2) => - (case #1 (hnormCon env c1) of - L'.CAbs (x, k, cb) => - let - val sc = (hnormCon env (subConInCon (0, c2) cb)) - handle SynUnif => cAll - (*val env' = E.pushCRel env x k*) - in - (*eprefaces "Subst" [("x", Print.PD.string x), - ("cb", p_con env' cb), - ("c2", p_con env c2), - ("sc", p_con env sc)];*) - sc - end - | L'.CApp (c', i) => - (case #1 (hnormCon env c') of - L'.CApp (c', f) => - (case #1 (hnormCon env c') of - L'.CFold ks => - (case #1 (hnormCon env c2) of - L'.CRecord (_, []) => hnormCon env i - | L'.CRecord (k, (x, c) :: rest) => - hnormCon env - (L'.CApp ((L'.CApp ((L'.CApp (f, x), loc), c), loc), - (L'.CApp ((L'.CApp ((L'.CApp ((L'.CFold ks, loc), f), loc), i), loc), - (L'.CRecord (k, rest), loc)), loc)), loc) - | L'.CConcat ((L'.CRecord (k, (x, c) :: rest), _), rest') => - let - val rest'' = (L'.CConcat ((L'.CRecord (k, rest), loc), rest'), loc) - - (*val ccc = (L'.CApp ((L'.CApp ((L'.CApp (f, x), loc), c), loc), - (L'.CApp ((L'.CApp ((L'.CApp ((L'.CFold ks, loc), f), loc), i), loc), - rest''), loc)), loc)*) - in - (*eprefaces "Red to" [("ccc", p_con env ccc), ("ccc'", p_con env (hnormCon env ccc))];*) - hnormCon env - (L'.CApp ((L'.CApp ((L'.CApp (f, x), loc), c), loc), - (L'.CApp ((L'.CApp ((L'.CApp ((L'.CFold ks, loc), f), loc), i), loc), - rest''), loc)), loc) - end - | _ => cAll) - | _ => cAll) - | _ => cAll) - | _ => cAll) - - | L'.CConcat (c1, c2) => - (case (hnormCon env c1, hnormCon env c2) of - ((L'.CRecord (k, xcs1), loc), (L'.CRecord (_, xcs2), _)) => - (L'.CRecord (k, xcs1 @ xcs2), loc) - | ((L'.CRecord (_, []), _), c2') => c2' - | ((L'.CConcat (c11, c12), loc), c2') => - hnormCon env (L'.CConcat (c11, (L'.CConcat (c12, c2'), loc)), loc) - | _ => cAll) - - | _ => cAll and unifyCons' env c1 c2 = unifyCons'' env (hnormCon env c1) (hnormCon env c2) |