1 | /* This file is part of the project "Hilbert II" - http://www.qedeq.org |
2 | * |
3 | * Copyright 2000-2014, Michael Meyling <mime@qedeq.org>. |
4 | * |
5 | * "Hilbert II" is free software; you can redistribute |
6 | * it and/or modify it under the terms of the GNU General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | */ |
15 | |
16 | package org.qedeq.kernel.bo.service.latex; |
17 | |
18 | import java.util.HashMap; |
19 | import java.util.Map; |
20 | |
21 | import org.qedeq.kernel.bo.module.InternalModuleServiceCall; |
22 | import org.qedeq.kernel.bo.module.KernelQedeqBo; |
23 | import org.qedeq.kernel.bo.service.basis.ControlVisitor; |
24 | import org.qedeq.kernel.se.base.module.Latex; |
25 | import org.qedeq.kernel.se.base.module.LatexList; |
26 | import org.qedeq.kernel.se.common.ModuleContext; |
27 | import org.qedeq.kernel.se.common.ModuleDataException; |
28 | import org.qedeq.kernel.se.common.Service; |
29 | import org.qedeq.kernel.se.common.SourceFileExceptionList; |
30 | |
31 | |
32 | /** |
33 | * Checks if no duplicate language entries exist. |
34 | * |
35 | * @author Michael Meyling |
36 | */ |
37 | public final class QedeqBoDuplicateLanguageChecker extends ControlVisitor { |
38 | |
39 | /** |
40 | * Checks if all formulas of a QEDEQ module are well formed. |
41 | * |
42 | * @param call Service process we work in. |
43 | * @throws SourceFileExceptionList An error occurred. |
44 | */ |
45 | public static void check(final InternalModuleServiceCall call) throws SourceFileExceptionList { |
46 | // TODO 20140125 m31: don't cast to KernelQedeqBo |
47 | final QedeqBoDuplicateLanguageChecker checker |
48 | = new QedeqBoDuplicateLanguageChecker(call.getService(), (KernelQedeqBo) call.getQedeq()); |
49 | checker.traverse(call.getInternalServiceProcess()); |
50 | } |
51 | |
52 | /** |
53 | * Constructor. |
54 | * |
55 | * @param service Service we work for. |
56 | * @param bo BO QEDEQ module object. |
57 | */ |
58 | private QedeqBoDuplicateLanguageChecker(final Service service, final KernelQedeqBo bo) { |
59 | super(service, bo); |
60 | } |
61 | |
62 | public final void visitEnter(final LatexList list) throws ModuleDataException { |
63 | if (list == null) { |
64 | return; |
65 | } |
66 | final String context = getCurrentContext().getLocationWithinModule(); |
67 | final Map languages = new HashMap(); |
68 | for (int i = 0; i < list.size(); i++) { |
69 | final Latex latex = list.get(i); |
70 | setLocationWithinModule(context + ".get(" + i + ")"); |
71 | if (latex == null) { |
72 | throw new LatexListDataException(1000, "Null pointer not permitted.", |
73 | getCurrentContext()); |
74 | } |
75 | if (languages.containsKey(latex.getLanguage())) { |
76 | throw new LatexListDataException(1001, "Language entry exists already", |
77 | getCurrentContext(), (ModuleContext) languages.get(latex.getLanguage())); |
78 | } |
79 | languages.put(list.get(i).getLanguage(), getCurrentContext()); |
80 | } |
81 | setLocationWithinModule(context); |
82 | setBlocked(true); |
83 | } |
84 | |
85 | public final void visitLeave(final LatexList list) { |
86 | setBlocked(false); |
87 | } |
88 | |
89 | } |