Mercurial > urweb
view src/source_print.sml @ 79:37847b504cc6
More hardcore unification
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sun, 29 Jun 2008 11:20:34 -0400 |
parents | 6431b315a1e3 |
children | b4f2a258e52c |
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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. *) (* Pretty-printing Laconic/Web *) structure SourcePrint :> SOURCE_PRINT = struct open Print.PD open Print open Source 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 "}"] | KWild => string "_" and p_kind k = p_kind' false k fun p_explicitness e = case e of Explicit => string "::" | Implicit => string ":::" fun p_con' par (c, _) = case c of CAnnot (c, k) => box [string "(", p_con c, space, string "::", space, p_kind k, string ")"] | TFun (t1, t2) => parenIf par (box [p_con' true t1, space, string "->", space, p_con t2]) | TCFun (e, x, k, c) => parenIf par (box [string x, space, p_explicitness e, space, p_kind k, space, string "->", space, p_con c]) | TRecord (CRecord xcs, _) => box [string "{", p_list (fn (x, c) => box [p_name x, space, string ":", space, p_con c]) xcs, string "}"] | TRecord c => box [string "$", p_con' true c] | CVar (ss, s) => p_list_sep (string ".") string (ss @ [s]) | CApp (c1, c2) => parenIf par (box [p_con c1, space, p_con' true c2]) | CAbs (x, NONE, c) => parenIf par (box [string "fn", space, string x, space, string "=>", space, p_con c]) | CAbs (x, SOME k, c) => parenIf par (box [string "fn", space, string x, space, string "::", space, p_kind k, space, string "=>", space, p_con c]) | CName s => box [string "#", string s] | CRecord xcs => box [string "[", p_list (fn (x, c) => box [p_con x, space, string "=", space, p_con c]) xcs, string "]"] | CConcat (c1, c2) => parenIf par (box [p_con' true c1, space, string "++", space, p_con c2]) | CFold => string "fold" | CWild k => box [string "(_", space, string "::", space, p_kind k] and p_con c = p_con' false c and p_name (all as (c, _)) = case c of CName s => string s | _ => p_con all fun p_exp' par (e, _) = case e of EAnnot (e, t) => box [string "(", p_exp e, space, string ":", space, p_con t, string ")"] | EPrim p => Prim.p_t p | EVar (ss, s) => p_list_sep (string ".") string (ss @ [s]) | EApp (e1, e2) => parenIf par (box [p_exp e1, space, p_exp' true e2]) | EAbs (x, NONE, e) => parenIf par (box [string "fn", space, string x, space, string "=>", space, p_exp e]) | EAbs (x, SOME t, e) => parenIf par (box [string "fn", space, string x, space, string ":", space, p_con t, space, string "=>", space, p_exp e]) | ECApp (e, c) => parenIf par (box [p_exp e, space, string "[", p_con c, string "]"]) | ECAbs (exp, x, k, e) => parenIf par (box [string "fn", space, string x, space, p_explicitness exp, space, p_kind k, space, string "=>", space, p_exp e]) | ERecord xes => box [string "{", p_list (fn (x, e) => box [p_name x, space, string "=", space, p_exp e]) xes, string "}"] | EField (e, c) => box [p_exp' true e, string ".", p_con' true c] | EFold => string "fold" and p_exp e = p_exp' false e fun p_sgn_item (sgi, _) = case sgi of SgiConAbs (x, k) => box [string "con", space, string x, space, string "::", space, p_kind k] | SgiCon (x, NONE, c) => box [string "con", space, string x, space, string "=", space, p_con c] | SgiCon (x, SOME k, c) => box [string "con", space, string x, space, string "::", space, p_kind k, space, string "=", space, p_con c] | SgiVal (x, c) => box [string "val", space, string x, space, string ":", space, p_con c] | SgiStr (x, sgn) => box [string "structure", space, string x, space, string ":", space, p_sgn sgn] | SgiSgn (x, sgn) => box [string "signature", space, string x, space, string "=", space, p_sgn sgn] | SgiInclude sgn => box [string "include", space, p_sgn sgn] and p_sgn (sgn, _) = case sgn of SgnConst sgis => box [string "sig", newline, p_list_sep newline p_sgn_item sgis, newline, string "end"] | SgnVar x => string x | SgnFun (x, sgn, sgn') => box [string "functor", space, string "(", string x, space, string ":", p_sgn sgn, string ")", space, string ":", space, p_sgn sgn'] | SgnWhere (sgn, x, c) => box [p_sgn sgn, space, string "where", space, string "con", space, string x, space, string "=", space, p_con c] | SgnProj (m, ms, x) => p_list_sep (string ".") string (m :: ms @ [x]) fun p_decl ((d, _) : decl) = case d of DCon (x, NONE, c) => box [string "con", space, string x, space, string "=", space, p_con c] | DCon (x, SOME k, c) => box [string "con", space, string x, space, string "::", space, p_kind k, space, string "=", space, p_con c] | DVal (x, NONE, e) => box [string "val", space, string x, space, string "=", space, p_exp e] | DVal (x, SOME t, e) => box [string "val", space, string x, space, string ":", space, p_con t, space, string "=", space, p_exp e] | DSgn (x, sgn) => box [string "signature", space, string x, space, string "=", space, p_sgn sgn] | DStr (x, NONE, str) => box [string "structure", space, string x, space, string "=", space, p_str str] | DStr (x, SOME sgn, str) => box [string "structure", space, string x, space, string ":", space, p_sgn sgn, space, string "=", space, p_str str] | DFfiStr (x, sgn) => box [string "extern", space, string "structure", space, string x, space, string ":", space, p_sgn sgn] | DOpen (m, ms) => box [string "open", space, p_list_sep (string ".") string (m :: ms)] and p_str (str, _) = case str of StrConst ds => box [string "struct", newline, p_list_sep newline p_decl ds, newline, string "end"] | StrVar x => string x | StrProj (str, x) => box [p_str str, string ".", string x] | StrFun (x, sgn, NONE, str) => box [string "functor", space, string "(", string x, space, string ":", p_sgn sgn, string ")", space, string "=>", space, p_str str] | StrFun (x, sgn, SOME sgn', str) => box [string "functor", space, string "(", string x, space, string ":", p_sgn sgn, string ")", space, string ":", space, p_sgn sgn', space, string "=>", space, p_str str] | StrApp (str1, str2) => box [p_str str1, string "(", p_str str2, string ")"] val p_file = p_list_sep newline p_decl end