Mercurial > urweb
diff src/core_print.sml @ 16:bc7b76ca57e0
Conversion to Core
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Sun, 08 Jun 2008 13:59:29 -0400 |
| parents | |
| children | 1ab48e37d0ef |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/core_print.sml Sun Jun 08 13:59:29 2008 -0400 @@ -0,0 +1,264 @@ +(* 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. + *) + +(* Pretty-printing core Laconic/Web *) + +structure CorePrint :> CORE_PRINT = struct + +open Print.PD +open Print + +open Core + +structure E = CoreEnv + +val debug = ref false + +fun p_kind' par (k, _) = + case k of + KType => string "Type" + | KArrow (k1, k2) => parenIf par (box [p_kind' true k1, + space, + string "->", + space, + p_kind k2]) + | KName => string "Name" + | KRecord k => box [string "{", p_kind k, string "}"] + +and p_kind k = p_kind' false k + +fun p_con' par env (c, _) = + case c of + TFun (t1, t2) => parenIf par (box [p_con' true env t1, + space, + string "->", + space, + p_con env t2]) + | TCFun (x, k, c) => parenIf par (box [string x, + space, + string "::", + space, + p_kind k, + space, + string "->", + space, + p_con (E.pushCRel env x k) c]) + | TRecord (CRecord (_, xcs), _) => box [string "{", + p_list (fn (x, c) => + box [p_con env x, + space, + string ":", + space, + p_con env c]) xcs, + string "}"] + | TRecord c => box [string "$", + p_con' true env c] + + | CRel n => + if !debug then + string (#1 (E.lookupCRel env n) ^ "_" ^ Int.toString n) + else + string (#1 (E.lookupCRel env n)) + | CNamed n => + if !debug then + string (#1 (E.lookupCNamed env n) ^ "__" ^ Int.toString n) + else + string (#1 (E.lookupCNamed env n)) + + | CApp (c1, c2) => parenIf par (box [p_con env c1, + space, + p_con' true env c2]) + | CAbs (x, k, c) => parenIf par (box [string "fn", + space, + string x, + space, + string "::", + space, + p_kind k, + space, + string "=>", + space, + p_con (E.pushCRel env x k) c]) + + | CName s => box [string "#", string s] + + | CRecord (k, xcs) => + if !debug then + parenIf par (box [string "[", + p_list (fn (x, c) => + box [p_con env x, + space, + string "=", + space, + p_con env c]) xcs, + string "]::", + p_kind k]) + else + parenIf par (box [string "[", + p_list (fn (x, c) => + box [p_con env x, + space, + string "=", + space, + p_con env c]) xcs, + string "]"]) + | CConcat (c1, c2) => parenIf par (box [p_con' true env c1, + space, + string "++", + space, + p_con env c2]) + +and p_con env = p_con' false env + +fun p_exp' par env (e, _) = + case e of + EPrim p => Prim.p_t p + | ERel n => + if !debug then + string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n) + else + string (#1 (E.lookupERel env n)) + | ENamed n => + if !debug then + string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n) + else + string (#1 (E.lookupENamed env n)) + | EApp (e1, e2) => parenIf par (box [p_exp env e1, + space, + p_exp' true env e2]) + | EAbs (x, t, e) => parenIf par (box [string "fn", + space, + string x, + space, + string ":", + space, + p_con env t, + space, + string "=>", + space, + p_exp (E.pushERel env x t) e]) + | ECApp (e, c) => parenIf par (box [p_exp env e, + space, + string "[", + p_con env c, + string "]"]) + | ECAbs (x, k, e) => parenIf par (box [string "fn", + space, + string x, + space, + string "::", + space, + p_kind k, + space, + string "=>", + space, + p_exp (E.pushCRel env x k) e]) + + | ERecord xes => box [string "{", + p_list (fn (x, e) => + box [p_con env x, + space, + string "=", + space, + p_exp env e]) xes, + string "}"] + | EField (e, c, {field, rest}) => + if !debug then + box [p_exp' true env e, + string ".", + p_con' true env c, + space, + string "[", + p_con env field, + space, + string " in ", + space, + p_con env rest, + string "]"] + else + box [p_exp' true env e, + string ".", + p_con' true env c] + +and p_exp env = p_exp' false env + +fun p_decl env ((d, _) : decl) = + case d of + DCon (x, n, k, c) => + let + val xp = if !debug then + box [string x, + string "__", + string (Int.toString n)] + else + string x + in + box [string "con", + space, + xp, + space, + string "::", + space, + p_kind k, + space, + string "=", + space, + p_con env c] + end + | DVal (x, n, t, e) => + let + val xp = if !debug then + box [string x, + string "__", + string (Int.toString n)] + else + string x + in + box [string "val", + space, + xp, + space, + string ":", + space, + p_con env t, + space, + string "=", + space, + p_exp env e] + end + +fun p_file env file = + let + val (_, pds) = ListUtil.mapfoldl (fn (d, env) => + (E.declBinds env d, + p_decl env d)) + env file + in + p_list_sep newline (fn x => x) pds + end + +end