Thu, 12 Oct 2017 19:44:07 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | /* |
aoqi@0 | 26 | * Copyright (C) 2004-2011 |
aoqi@0 | 27 | * |
aoqi@0 | 28 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
aoqi@0 | 29 | * of this software and associated documentation files (the "Software"), to deal |
aoqi@0 | 30 | * in the Software without restriction, including without limitation the rights |
aoqi@0 | 31 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
aoqi@0 | 32 | * copies of the Software, and to permit persons to whom the Software is |
aoqi@0 | 33 | * furnished to do so, subject to the following conditions: |
aoqi@0 | 34 | * |
aoqi@0 | 35 | * The above copyright notice and this permission notice shall be included in |
aoqi@0 | 36 | * all copies or substantial portions of the Software. |
aoqi@0 | 37 | * |
aoqi@0 | 38 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
aoqi@0 | 39 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
aoqi@0 | 40 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
aoqi@0 | 41 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
aoqi@0 | 42 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
aoqi@0 | 43 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
aoqi@0 | 44 | * THE SOFTWARE. |
aoqi@0 | 45 | */ |
aoqi@0 | 46 | package com.sun.xml.internal.rngom.nc; |
aoqi@0 | 47 | |
aoqi@0 | 48 | import javax.xml.namespace.QName; |
aoqi@0 | 49 | |
aoqi@0 | 50 | class OverlapDetector implements NameClassVisitor<Void> { |
aoqi@0 | 51 | private NameClass nc1; |
aoqi@0 | 52 | private NameClass nc2; |
aoqi@0 | 53 | private boolean overlaps = false; |
aoqi@0 | 54 | |
aoqi@0 | 55 | static final String IMPOSSIBLE = "\u0000"; |
aoqi@0 | 56 | |
aoqi@0 | 57 | private OverlapDetector(NameClass nc1, NameClass nc2) { |
aoqi@0 | 58 | this.nc1 = nc1; |
aoqi@0 | 59 | this.nc2 = nc2; |
aoqi@0 | 60 | nc1.accept(this); |
aoqi@0 | 61 | nc2.accept(this); |
aoqi@0 | 62 | } |
aoqi@0 | 63 | |
aoqi@0 | 64 | private void probe(QName name) { |
aoqi@0 | 65 | if (nc1.contains(name) && nc2.contains(name)) |
aoqi@0 | 66 | overlaps = true; |
aoqi@0 | 67 | } |
aoqi@0 | 68 | |
aoqi@0 | 69 | public Void visitChoice(NameClass nc1, NameClass nc2) { |
aoqi@0 | 70 | nc1.accept(this); |
aoqi@0 | 71 | nc2.accept(this); |
aoqi@0 | 72 | return null; |
aoqi@0 | 73 | } |
aoqi@0 | 74 | |
aoqi@0 | 75 | public Void visitNsName(String ns) { |
aoqi@0 | 76 | probe(new QName(ns, IMPOSSIBLE)); |
aoqi@0 | 77 | return null; |
aoqi@0 | 78 | } |
aoqi@0 | 79 | |
aoqi@0 | 80 | public Void visitNsNameExcept(String ns, NameClass ex) { |
aoqi@0 | 81 | probe(new QName(ns, IMPOSSIBLE)); |
aoqi@0 | 82 | ex.accept(this); |
aoqi@0 | 83 | return null; |
aoqi@0 | 84 | } |
aoqi@0 | 85 | |
aoqi@0 | 86 | public Void visitAnyName() { |
aoqi@0 | 87 | probe(new QName(IMPOSSIBLE, IMPOSSIBLE)); |
aoqi@0 | 88 | return null; |
aoqi@0 | 89 | } |
aoqi@0 | 90 | |
aoqi@0 | 91 | public Void visitAnyNameExcept(NameClass ex) { |
aoqi@0 | 92 | probe(new QName(IMPOSSIBLE, IMPOSSIBLE)); |
aoqi@0 | 93 | ex.accept(this); |
aoqi@0 | 94 | return null; |
aoqi@0 | 95 | } |
aoqi@0 | 96 | |
aoqi@0 | 97 | public Void visitName(QName name) { |
aoqi@0 | 98 | probe(name); |
aoqi@0 | 99 | return null; |
aoqi@0 | 100 | } |
aoqi@0 | 101 | |
aoqi@0 | 102 | public Void visitNull() { |
aoqi@0 | 103 | return null; |
aoqi@0 | 104 | } |
aoqi@0 | 105 | |
aoqi@0 | 106 | static boolean overlap(NameClass nc1, NameClass nc2) { |
aoqi@0 | 107 | if (nc2 instanceof SimpleNameClass) { |
aoqi@0 | 108 | SimpleNameClass snc = (SimpleNameClass) nc2; |
aoqi@0 | 109 | return nc1.contains(snc.name); |
aoqi@0 | 110 | } |
aoqi@0 | 111 | if (nc1 instanceof SimpleNameClass) { |
aoqi@0 | 112 | SimpleNameClass snc = (SimpleNameClass) nc1; |
aoqi@0 | 113 | return nc2.contains(snc.name); |
aoqi@0 | 114 | } |
aoqi@0 | 115 | return new OverlapDetector(nc1, nc2).overlaps; |
aoqi@0 | 116 | } |
aoqi@0 | 117 | } |