Mercurial > urweb
view src/print.sml @ 635:75c7a69354d6
Coq formalization uses TDisjoint
author | Adam Chlipala <adamc@hcoop.net> |
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date | Tue, 24 Feb 2009 16:08:14 -0500 |
parents | 73456bfde988 |
children | fd34210bc3e5 |
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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. *) (* Generic printing support code *) structure Print :> PRINT = struct structure SM = TextIOPP structure PD = PPDescFn(SM) type 'a printer = 'a -> PD.pp_desc fun box ds = PD.hovBox (PD.PPS.Rel 1, ds) fun parenIf b d = if b then box [PD.string "(", d, PD.string ")"] else d val space = PD.space 1 val out = SM.openOut {dst = TextIO.stdOut, wid = 70} val err = SM.openOut {dst = TextIO.stdErr, wid = 70} fun p_list_sep sep f ls = case ls of [] => PD.string "" | [x] => f x | x :: rest => let val tokens = foldr (fn (x, tokens) => sep :: PD.cut :: f x :: tokens) [] rest in box (f x :: tokens) end fun p_list f = p_list_sep (box [PD.string ",", space]) f fun p_list_sepi sep f ls = case ls of [] => PD.string "" | [x] => f 0 x | x :: rest => let val tokens = ListUtil.foldri (fn (n, x, tokens) => sep :: PD.cut :: f (n + 1) x :: tokens) [] rest in box (f 0 x :: tokens) end fun fprint f d = (PD.description (f, d); PD.PPS.flushStream f) val print = fprint out val eprint = fprint err fun fpreface f (s, d) = fprint f (PD.hovBox (PD.PPS.Rel 0, [PD.string s, PD.space 1, d, PD.newline])) val preface = fpreface out val epreface = fpreface err fun fprefaces f s ls = let val len = foldl (fn ((s, _), best) => Int.max (size s, best)) 0 ls in fprint f (PD.string s); fprint f PD.newline; app (fn (s, d) => let val s = CharVector.tabulate (len - size s, fn _ => #" ") ^ s ^ ": " in fpreface f (s, d) end) ls end val prefaces = fprefaces out val eprefaces = fprefaces err fun fprefaces' f ls = let val len = foldl (fn ((s, _), best) => Int.max (size s, best)) 0 ls in app (fn (s, d) => let val s = CharVector.tabulate (len - size s, fn _ => #" ") ^ s ^ ": " in fpreface f (s, d) end) ls end val prefaces' = fprefaces' out val eprefaces' = fprefaces' err end