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.xml.handler.module; |
17 | |
18 | import org.qedeq.kernel.se.dto.module.PropositionVo; |
19 | import org.qedeq.kernel.xml.common.XmlSyntaxException; |
20 | import org.qedeq.kernel.xml.handler.common.AbstractSimpleHandler; |
21 | import org.qedeq.kernel.xml.handler.common.SimpleAttributes; |
22 | |
23 | |
24 | /** |
25 | * Parse a proposition. |
26 | * |
27 | * @version $Revision: 1.1 $ |
28 | * @author Michael Meyling |
29 | */ |
30 | public class PropositionHandler extends AbstractSimpleHandler { |
31 | |
32 | /** Handler for proposition formula. */ |
33 | private final FormulaHandler formulaHandler; |
34 | |
35 | /** Handler for rule description. */ |
36 | private final LatexListHandler descriptionHandler; |
37 | |
38 | /** Handle informal proofs. */ |
39 | private final ProofHandler proofHandler; |
40 | |
41 | /** Handle formal proofs. */ |
42 | private final FormalProofHandler formalProofHandler; |
43 | |
44 | /** Proposition value object. */ |
45 | private PropositionVo proposition; |
46 | |
47 | |
48 | /** |
49 | * Deals with propositions. |
50 | * |
51 | * @param handler Parent handler. |
52 | */ |
53 | public PropositionHandler(final AbstractSimpleHandler handler) { |
54 | super(handler, "THEOREM"); |
55 | formulaHandler = new FormulaHandler(this); |
56 | descriptionHandler = new LatexListHandler(this, "DESCRIPTION"); |
57 | proofHandler = new ProofHandler(this); |
58 | formalProofHandler = new FormalProofHandler(this); |
59 | } |
60 | |
61 | public final void init() { |
62 | proposition = null; |
63 | } |
64 | |
65 | /** |
66 | * Get proposition. |
67 | * |
68 | * @return Proposition. |
69 | */ |
70 | public final PropositionVo getProposition() { |
71 | return proposition; |
72 | } |
73 | |
74 | public final void startElement(final String name, final SimpleAttributes attributes) |
75 | throws XmlSyntaxException { |
76 | if (getStartTag().equals(name)) { |
77 | proposition = new PropositionVo(); |
78 | } else if (formulaHandler.getStartTag().equals(name)) { |
79 | changeHandler(formulaHandler, name, attributes); |
80 | } else if (descriptionHandler.getStartTag().equals(name)) { |
81 | changeHandler(descriptionHandler, name, attributes); |
82 | } else if (proofHandler.getStartTag().equals(name)) { |
83 | changeHandler(proofHandler, name, attributes); |
84 | } else if (formalProofHandler.getStartTag().equals(name)) { |
85 | changeHandler(formalProofHandler, name, attributes); |
86 | } else { |
87 | throw XmlSyntaxException.createUnexpectedTagException(name); |
88 | } |
89 | } |
90 | |
91 | public final void endElement(final String name) throws XmlSyntaxException { |
92 | if (getStartTag().equals(name)) { |
93 | // nothing to do |
94 | } else if (formulaHandler.getStartTag().equals(name)) { |
95 | proposition.setFormula(formulaHandler.getFormula()); |
96 | } else if (descriptionHandler.getStartTag().equals(name)) { |
97 | proposition.setDescription(descriptionHandler.getLatexList()); |
98 | } else if (proofHandler.getStartTag().equals(name)) { |
99 | proposition.addProof(proofHandler.getProof()); |
100 | } else if (formalProofHandler.getStartTag().equals(name)) { |
101 | proposition.addFormalProof(formalProofHandler.getProof()); |
102 | } else { |
103 | throw XmlSyntaxException.createUnexpectedTagException(name); |
104 | } |
105 | } |
106 | |
107 | } |