Mercurial > urweb
view src/pathcheck.sml @ 864:6304f5e8fbb4
FastCGI working with lighttpd
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 27 Jun 2009 19:07:28 -0400 |
parents | 4c5796512edc |
children | 72670131dace |
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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 PathCheck :> PATH_CHECK = struct open Mono structure E = ErrorMsg structure SS = BinarySetFn(struct type ord_key = string val compare = String.compare end) fun checkDecl ((d, loc), (funcs, rels, cookies, styles)) = let fun doFunc s = (if SS.member (funcs, s) then E.errorAt loc ("Duplicate function path " ^ s) else (); (SS.add (funcs, s), rels, cookies, styles)) fun doRel s = (if SS.member (rels, s) then E.errorAt loc ("Duplicate table/sequence path " ^ s) else (); (funcs, SS.add (rels, s), cookies, styles)) fun doCookie s = (if SS.member (cookies, s) then E.errorAt loc ("Duplicate cookie path " ^ s) else (); (funcs, rels, SS.add (cookies, s), styles)) fun doStyle s = (if SS.member (styles, s) then E.errorAt loc ("Duplicate style path " ^ s) else (); (funcs, rels, cookies, SS.add (styles, s))) in case d of DExport (_, s, _, _, _) => doFunc s | DTable (s, _, pe, ce) => let fun constraints (e, rels) = case #1 e of ERecord [(s', _, _)] => let val s' = s ^ "_" ^ s' in if SS.member (rels, s') then E.errorAt loc ("Duplicate constraint path " ^ s') else (); SS.add (rels, s') end | EStrcat (e1, e2) => constraints (e2, constraints (e1, rels)) | _ => rels val rels = #2 (doRel s) val rels = case #1 pe of EPrim (Prim.String "") => rels | _ => let val s' = s ^ "_Pkey" in if SS.member (rels, s') then E.errorAt loc ("Duplicate primary key constraint path " ^ s') else (); SS.add (rels, s') end in (funcs, constraints (ce, rels), cookies, styles) end | DSequence s => doRel s | DCookie s => doCookie s | DStyle s => doStyle s | _ => (funcs, rels, cookies, styles) end fun check ds = ignore (foldl checkDecl (SS.empty, SS.empty, SS.empty, SS.empty) ds) end