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FFI through monoize

author | Adam Chlipala <adamc@hcoop.net> |
---|---|

date | Sun, 22 Jun 2008 10:12:23 -0400 |

parents | 537db4ee89f4 |

children | 40d146f467c5 |

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(* Copyright (c) 2008, Adam Chlipala * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - The names of contributors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. *) structure MonoUtil :> MONO_UTIL = struct open Mono structure S = Search structure Typ = struct fun mapfold fc = let fun mft c acc = S.bindP (mft' c acc, fc) and mft' (cAll as (c, loc)) = case c of TFun (t1, t2) => S.bind2 (mft t1, fn t1' => S.map2 (mft t2, fn t2' => (TFun (t1', t2'), loc))) | TRecord xts => S.map2 (ListUtil.mapfold (fn (x, t) => S.map2 (mft t, fn t' => (x, t'))) xts, fn xts' => (TRecord xts', loc)) | TNamed _ => S.return2 cAll | TFfi _ => S.return2 cAll in mft end fun map typ c = case mapfold (fn c => fn () => S.Continue (typ c, ())) c () of S.Return () => raise Fail "Mono_util.Typ.map" | S.Continue (c, ()) => c fun fold typ s c = case mapfold (fn c => fn s => S.Continue (c, typ (c, s))) c s of S.Continue (_, s) => s | S.Return _ => raise Fail "MonoUtil.Typ.fold: Impossible" fun exists typ k = case mapfold (fn c => fn () => if typ c then S.Return () else S.Continue (c, ())) k () of S.Return _ => true | S.Continue _ => false end structure Exp = struct datatype binder = NamedT of string * int * typ option | RelE of string * typ | NamedE of string * int * typ * exp option fun mapfoldB {typ = fc, exp = fe, bind} = let val mft = Typ.mapfold fc fun mfe ctx e acc = S.bindP (mfe' ctx e acc, fe ctx) and mfe' ctx (eAll as (e, loc)) = case e of EPrim _ => S.return2 eAll | ERel _ => S.return2 eAll | ENamed _ => S.return2 eAll | EFfi _ => S.return2 eAll | EFfiApp (m, x, es) => S.map2 (ListUtil.mapfold (fn e => mfe ctx e) es, fn es' => (EFfiApp (m, x, es'), loc)) | EApp (e1, e2) => S.bind2 (mfe ctx e1, fn e1' => S.map2 (mfe ctx e2, fn e2' => (EApp (e1', e2'), loc))) | EAbs (x, dom, ran, e) => S.bind2 (mft dom, fn dom' => S.bind2 (mft ran, fn ran' => S.map2 (mfe (bind (ctx, RelE (x, dom'))) e, fn e' => (EAbs (x, dom', ran', e'), loc)))) | ERecord xes => S.map2 (ListUtil.mapfold (fn (x, e, t) => S.bind2 (mfe ctx e, fn e' => S.map2 (mft t, fn t' => (x, e', t')))) xes, fn xes' => (ERecord xes', loc)) | EField (e, x) => S.map2 (mfe ctx e, fn e' => (EField (e', x), loc)) in mfe end fun mapfold {typ = fc, exp = fe} = mapfoldB {typ = fc, exp = fn () => fe, bind = fn ((), _) => ()} () fun mapB {typ, exp, bind} ctx e = case mapfoldB {typ = fn c => fn () => S.Continue (typ c, ()), exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()), bind = bind} ctx e () of S.Continue (e, ()) => e | S.Return _ => raise Fail "MonoUtil.Exp.mapB: Impossible" fun map {typ, exp} e = case mapfold {typ = fn c => fn () => S.Continue (typ c, ()), exp = fn e => fn () => S.Continue (exp e, ())} e () of S.Return () => raise Fail "Mono_util.Exp.map" | S.Continue (e, ()) => e fun fold {typ, exp} s e = case mapfold {typ = fn c => fn s => S.Continue (c, typ (c, s)), exp = fn e => fn s => S.Continue (e, exp (e, s))} e s of S.Continue (_, s) => s | S.Return _ => raise Fail "MonoUtil.Exp.fold: Impossible" fun exists {typ, exp} k = case mapfold {typ = fn c => fn () => if typ c then S.Return () else S.Continue (c, ()), exp = fn e => fn () => if exp e then S.Return () else S.Continue (e, ())} k () of S.Return _ => true | S.Continue _ => false end structure Decl = struct datatype binder = datatype Exp.binder fun mapfoldB {typ = fc, exp = fe, decl = fd, bind} = let val mft = Typ.mapfold fc val mfe = Exp.mapfoldB {typ = fc, exp = fe, bind = bind} fun mfd ctx d acc = S.bindP (mfd' ctx d acc, fd ctx) and mfd' ctx (dAll as (d, loc)) = case d of DVal (x, n, t, e) => S.bind2 (mft t, fn t' => S.map2 (mfe ctx e, fn e' => (DVal (x, n, t', e'), loc))) in mfd end fun mapfold {typ = fc, exp = fe, decl = fd} = mapfoldB {typ = fc, exp = fn () => fe, decl = fn () => fd, bind = fn ((), _) => ()} () fun fold {typ, exp, decl} s d = case mapfold {typ = fn c => fn s => S.Continue (c, typ (c, s)), exp = fn e => fn s => S.Continue (e, exp (e, s)), decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of S.Continue (_, s) => s | S.Return _ => raise Fail "MonoUtil.Decl.fold: Impossible" end structure File = struct datatype binder = datatype Exp.binder fun mapfoldB (all as {bind, ...}) = let val mfd = Decl.mapfoldB all fun mff ctx ds = case ds of nil => S.return2 nil | d :: ds' => S.bind2 (mfd ctx d, fn d' => let val b = case #1 d' of DVal (x, n, t, e) => NamedE (x, n, t, SOME e) val ctx' = bind (ctx, b) in S.map2 (mff ctx' ds', fn ds' => d' :: ds') end) in mff end fun mapfold {typ = fc, exp = fe, decl = fd} = mapfoldB {typ = fc, exp = fn () => fe, decl = fn () => fd, bind = fn ((), _) => ()} () fun mapB {typ, exp, decl, bind} ctx ds = case mapfoldB {typ = fn c => fn () => S.Continue (typ c, ()), exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()), decl = fn ctx => fn d => fn () => S.Continue (decl ctx d, ()), bind = bind} ctx ds () of S.Continue (ds, ()) => ds | S.Return _ => raise Fail "MonoUtil.File.mapB: Impossible" fun fold {typ, exp, decl} s d = case mapfold {typ = fn c => fn s => S.Continue (c, typ (c, s)), exp = fn e => fn s => S.Continue (e, exp (e, s)), decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of S.Continue (_, s) => s | S.Return _ => raise Fail "MonoUtil.File.fold: Impossible" end end