adamc@38: (* Copyright (c) 2008, Adam Chlipala adamc@38: * All rights reserved. adamc@38: * adamc@38: * Redistribution and use in source and binary forms, with or without adamc@38: * modification, are permitted provided that the following conditions are met: adamc@38: * adamc@38: * - Redistributions of source code must retain the above copyright notice, adamc@38: * this list of conditions and the following disclaimer. adamc@38: * - Redistributions in binary form must reproduce the above copyright notice, adamc@38: * this list of conditions and the following disclaimer in the documentation adamc@38: * and/or other materials provided with the distribution. adamc@38: * - The names of contributors may not be used to endorse or promote products adamc@38: * derived from this software without specific prior written permission. adamc@38: * adamc@38: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" adamc@38: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE adamc@38: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE adamc@38: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE adamc@38: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR adamc@38: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF adamc@38: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS adamc@38: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN adamc@38: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) adamc@38: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE adamc@38: * POSSIBILITY OF SUCH DAMAGE. adamc@38: *) adamc@38: adamc@38: structure Explify :> EXPLIFY = struct adamc@38: adamc@38: structure EM = ErrorMsg adamc@38: structure L = Elab adamc@38: structure L' = Expl adamc@38: adamc@38: fun explifyKind (k, loc) = adamc@38: case k of adamc@38: L.KType => (L'.KType, loc) adamc@38: | L.KArrow (k1, k2) => (L'.KArrow (explifyKind k1, explifyKind k2), loc) adamc@38: | L.KName => (L'.KName, loc) adamc@38: | L.KRecord k => (L'.KRecord (explifyKind k), loc) adamc@38: adamc@87: | L.KUnit => (L'.KUnit, loc) adamc@213: | L.KTuple ks => (L'.KTuple (map explifyKind ks), loc) adamc@82: adamc@38: | L.KError => raise Fail ("explifyKind: KError at " ^ EM.spanToString loc) adamc@76: | L.KUnif (_, _, ref (SOME k)) => explifyKind k adamc@38: | L.KUnif _ => raise Fail ("explifyKind: KUnif at " ^ EM.spanToString loc) adamc@38: adamc@38: fun explifyCon (c, loc) = adamc@38: case c of adamc@38: L.TFun (t1, t2) => (L'.TFun (explifyCon t1, explifyCon t2), loc) adamc@38: | L.TCFun (_, x, k, t) => (L'.TCFun (x, explifyKind k, explifyCon t), loc) adamc@334: | L.TDisjoint (_, _, _, c) => explifyCon c adamc@38: | L.TRecord c => (L'.TRecord (explifyCon c), loc) adamc@38: adamc@38: | L.CRel n => (L'.CRel n, loc) adamc@38: | L.CNamed n => (L'.CNamed n, loc) adamc@38: | L.CModProj (m, ms, x) => (L'.CModProj (m, ms, x), loc) adamc@38: adamc@38: | L.CApp (c1, c2) => (L'.CApp (explifyCon c1, explifyCon c2), loc) adamc@38: | L.CAbs (x, k, c) => (L'.CAbs (x, explifyKind k, explifyCon c), loc) adamc@85: | L.CDisjoint (_, _, c) => explifyCon c adamc@38: adamc@38: | L.CName s => (L'.CName s, loc) adamc@38: adamc@38: | L.CRecord (k, xcs) => (L'.CRecord (explifyKind k, map (fn (c1, c2) => (explifyCon c1, explifyCon c2)) xcs), loc) adamc@38: | L.CConcat (c1, c2) => (L'.CConcat (explifyCon c1, explifyCon c2), loc) adamc@68: | L.CFold (dom, ran) => (L'.CFold (explifyKind dom, explifyKind ran), loc) adamc@38: adamc@87: | L.CUnit => (L'.CUnit, loc) adamc@82: adamc@213: | L.CTuple cs => (L'.CTuple (map explifyCon cs), loc) adamc@213: | L.CProj (c, n) => (L'.CProj (explifyCon c, n), loc) adamc@208: adamc@38: | L.CError => raise Fail ("explifyCon: CError at " ^ EM.spanToString loc) adamc@76: | L.CUnif (_, _, _, ref (SOME c)) => explifyCon c adamc@38: | L.CUnif _ => raise Fail ("explifyCon: CUnif at " ^ EM.spanToString loc) adamc@38: adamc@176: fun explifyPatCon pc = adamc@176: case pc of adamc@176: L.PConVar n => L'.PConVar n adamc@176: | L.PConProj x => L'.PConProj x adamc@176: adamc@176: fun explifyPat (p, loc) = adamc@176: case p of adamc@176: L.PWild => (L'.PWild, loc) adamc@182: | L.PVar (x, t) => (L'.PVar (x, explifyCon t), loc) adamc@176: | L.PPrim p => (L'.PPrim p, loc) adamc@191: | L.PCon (dk, pc, cs, po) => (L'.PCon (dk, explifyPatCon pc, map explifyCon cs, Option.map explifyPat po), loc) adamc@182: | L.PRecord xps => (L'.PRecord (map (fn (x, p, t) => (x, explifyPat p, explifyCon t)) xps), loc) adamc@176: adamc@38: fun explifyExp (e, loc) = adamc@38: case e of adamc@38: L.EPrim p => (L'.EPrim p, loc) adamc@38: | L.ERel n => (L'.ERel n, loc) adamc@38: | L.ENamed n => (L'.ENamed n, loc) adamc@38: | L.EModProj (m, ms, x) => (L'.EModProj (m, ms, x), loc) adamc@38: | L.EApp (e1, e2) => (L'.EApp (explifyExp e1, explifyExp e2), loc) adamc@38: | L.EAbs (x, dom, ran, e1) => (L'.EAbs (x, explifyCon dom, explifyCon ran, explifyExp e1), loc) adamc@38: | L.ECApp (e1, c) => (L'.ECApp (explifyExp e1, explifyCon c), loc) adamc@38: | L.ECAbs (_, x, k, e1) => (L'.ECAbs (x, explifyKind k, explifyExp e1), loc) adamc@38: adamc@38: | L.ERecord xes => (L'.ERecord (map (fn (c, e, t) => (explifyCon c, explifyExp e, explifyCon t)) xes), loc) adamc@38: | L.EField (e1, c, {field, rest}) => (L'.EField (explifyExp e1, explifyCon c, adamc@38: {field = explifyCon field, rest = explifyCon rest}), loc) adamc@339: | L.EWith (e1, c, e2, {field, rest}) => (L'.EWith (explifyExp e1, explifyCon c, explifyExp e2, adamc@339: {field = explifyCon field, rest = explifyCon rest}), loc) adamc@149: | L.ECut (e1, c, {field, rest}) => (L'.ECut (explifyExp e1, explifyCon c, adamc@149: {field = explifyCon field, rest = explifyCon rest}), loc) adamc@72: | L.EFold k => (L'.EFold (explifyKind k), loc) adamc@38: adamc@182: | L.ECase (e, pes, {disc, result}) => adamc@182: (L'.ECase (explifyExp e, adamc@182: map (fn (p, e) => (explifyPat p, explifyExp e)) pes, adamc@182: {disc = explifyCon disc, result = explifyCon result}), loc) adamc@171: adamc@38: | L.EError => raise Fail ("explifyExp: EError at " ^ EM.spanToString loc) adamc@228: | L.EUnif (ref (SOME e)) => explifyExp e adamc@228: | L.EUnif _ => raise Fail ("explifyExp: Undetermined EUnif at " ^ EM.spanToString loc) adamc@38: adamc@38: fun explifySgi (sgi, loc) = adamc@38: case sgi of adamc@88: L.SgiConAbs (x, n, k) => SOME (L'.SgiConAbs (x, n, explifyKind k), loc) adamc@88: | L.SgiCon (x, n, k, c) => SOME (L'.SgiCon (x, n, explifyKind k, explifyCon c), loc) adamc@191: | L.SgiDatatype (x, n, xs, xncs) => SOME (L'.SgiDatatype (x, n, xs, adamc@191: map (fn (x, n, co) => adamc@191: (x, n, Option.map explifyCon co)) xncs), loc) adamc@191: | L.SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) => adamc@191: SOME (L'.SgiDatatypeImp (x, n, m1, ms, s, xs, map (fn (x, n, co) => adamc@191: (x, n, Option.map explifyCon co)) xncs), loc) adamc@88: | L.SgiVal (x, n, c) => SOME (L'.SgiVal (x, n, explifyCon c), loc) adamc@88: | L.SgiStr (x, n, sgn) => SOME (L'.SgiStr (x, n, explifySgn sgn), loc) adamc@88: | L.SgiSgn (x, n, sgn) => SOME (L'.SgiSgn (x, n, explifySgn sgn), loc) adamc@88: | L.SgiConstraint _ => NONE adamc@246: | L.SgiTable (nt, x, n, c) => SOME (L'.SgiTable (nt, x, n, explifyCon c), loc) adamc@338: | L.SgiSequence (nt, x, n) => SOME (L'.SgiSequence (nt, x, n), loc) adamc@211: | L.SgiClassAbs (x, n) => SOME (L'.SgiConAbs (x, n, (L'.KArrow ((L'.KType, loc), (L'.KType, loc)), loc)), loc) adamc@211: | L.SgiClass (x, n, c) => SOME (L'.SgiCon (x, n, (L'.KArrow ((L'.KType, loc), (L'.KType, loc)), loc), adamc@211: explifyCon c), loc) adamc@38: adamc@38: and explifySgn (sgn, loc) = adamc@38: case sgn of adamc@88: L.SgnConst sgis => (L'.SgnConst (List.mapPartial explifySgi sgis), loc) adamc@38: | L.SgnVar n => (L'.SgnVar n, loc) adamc@45: | L.SgnFun (m, n, dom, ran) => (L'.SgnFun (m, n, explifySgn dom, explifySgn ran), loc) adamc@45: | L.SgnWhere (sgn, x, c) => (L'.SgnWhere (explifySgn sgn, x, explifyCon c), loc) adamc@64: | L.SgnProj x => (L'.SgnProj x, loc) adamc@38: | L.SgnError => raise Fail ("explifySgn: SgnError at " ^ EM.spanToString loc) adamc@38: adamc@38: fun explifyDecl (d, loc : EM.span) = adamc@38: case d of adamc@88: L.DCon (x, n, k, c) => SOME (L'.DCon (x, n, explifyKind k, explifyCon c), loc) adamc@191: | L.DDatatype (x, n, xs, xncs) => SOME (L'.DDatatype (x, n, xs, adamc@191: map (fn (x, n, co) => adamc@191: (x, n, Option.map explifyCon co)) xncs), loc) adamc@191: | L.DDatatypeImp (x, n, m1, ms, s, xs, xncs) => adamc@191: SOME (L'.DDatatypeImp (x, n, m1, ms, s, xs, adamc@191: map (fn (x, n, co) => adamc@191: (x, n, Option.map explifyCon co)) xncs), loc) adamc@88: | L.DVal (x, n, t, e) => SOME (L'.DVal (x, n, explifyCon t, explifyExp e), loc) adamc@124: | L.DValRec vis => SOME (L'.DValRec (map (fn (x, n, t, e) => (x, n, explifyCon t, explifyExp e)) vis), loc) adamc@38: adamc@88: | L.DSgn (x, n, sgn) => SOME (L'.DSgn (x, n, explifySgn sgn), loc) adamc@88: | L.DStr (x, n, sgn, str) => SOME (L'.DStr (x, n, explifySgn sgn, explifyStr str), loc) adamc@88: | L.DFfiStr (x, n, sgn) => SOME (L'.DFfiStr (x, n, explifySgn sgn), loc) adamc@88: | L.DConstraint (c1, c2) => NONE adamc@109: | L.DExport (en, sgn, str) => SOME (L'.DExport (en, explifySgn sgn, explifyStr str), loc) adamc@246: | L.DTable (nt, x, n, c) => SOME (L'.DTable (nt, x, n, explifyCon c), loc) adamc@338: | L.DSequence (nt, x, n) => SOME (L'.DSequence (nt, x, n), loc) adamc@213: | L.DClass (x, n, c) => SOME (L'.DCon (x, n, adamc@213: (L'.KArrow ((L'.KType, loc), (L'.KType, loc)), loc), explifyCon c), loc) adamc@271: | L.DDatabase s => SOME (L'.DDatabase s, loc) adamc@38: adamc@38: and explifyStr (str, loc) = adamc@38: case str of adamc@88: L.StrConst ds => (L'.StrConst (List.mapPartial explifyDecl ds), loc) adamc@38: | L.StrVar n => (L'.StrVar n, loc) adamc@38: | L.StrProj (str, s) => (L'.StrProj (explifyStr str, s), loc) adamc@45: | L.StrFun (m, n, dom, ran, str) => (L'.StrFun (m, n, explifySgn dom, explifySgn ran, explifyStr str), loc) adamc@45: | L.StrApp (str1, str2) => (L'.StrApp (explifyStr str1, explifyStr str2), loc) adamc@38: | L.StrError => raise Fail ("explifyStr: StrError at " ^ EM.spanToString loc) adamc@38: adamc@88: val explify = List.mapPartial explifyDecl adamc@38: adamc@38: end