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Java > Open Source Codes > org > xquark > xquery > parser > primitivefunctions > xsfunctions > FunctionDOUBLE


1 /*
2  * This file belongs to the XQuark distribution.
3  * Copyright (C) 2003 Universite de Versailles Saint-Quentin.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 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 GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307.
18  * You can also get it at http://www.gnu.org/licenses/lgpl.html
19  *
20  * For more information on this software, see http://www.xquark.org.
21  */
22
23
24 package org.xquark.xquery.parser.primitivefunctions.xsfunctions;
25
26 import java.util.ArrayList JavaDoc;
27
28 import org.xquark.xquery.parser.*;
29 import org.xquark.xquery.typing.TypeException;
30
31 public class FunctionDOUBLE extends PrimitiveFunctionCall {
32     private static final String JavaDoc RCSRevision = "$Revision: 1.6 $";
33     private static final String JavaDoc RCSName = "$Name: $";
34     
35     // #############################################################################
36 // VISITOR STUFF
37 // #############################################################################
38
39     public void accept(ParserVisitor visitor) throws XQueryException {
40         visitor.visit(this);
41     }
42     
43     // #############################################################################
44 // CONSTRUCTOR STUFF
45 // #############################################################################
46
47     public FunctionDOUBLE(ArrayList JavaDoc args, XQueryModule parentModule) throws TypeException, XQueryException {
48         super(new QName("double",null),args);
49         if (args.get(0) instanceof ValueString)
50             args.set(0, convert((ValueString)args.get(0),parentModule));
51         else if (parentModule != null && parentModule.getStaticContext().getTypeVisitor() != null)
52             accept(parentModule.getStaticContext().getTypeVisitor());
53         setParentModule(parentModule);
54         setArguments(args);
55     }
56     
57     // this function should be called with one argument
58 public void setArguments(ArrayList JavaDoc arguments) throws XQueryException {
59         if (arguments == null || arguments.size() != 1) throw new XQueryException("Function double should have one argument");
60         super.setArguments(arguments);
61     }
62     
63     private ValueDouble convert(ValueString valString,XQueryModule parentModule) throws XQueryException {
64         String JavaDoc val = valString.getStringValue();
65         ValueDouble valInt = new ValueDouble(val,parentModule);
66         return valInt;
67     }
68     
69  }
70
71
72
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