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Java > Open Source Codes > com > caucho > xsl > java > XslWithParam


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */

28
29 package com.caucho.xsl.java;
30
31 import com.caucho.java.JavaWriter;
32 import com.caucho.xml.QName;
33 import com.caucho.xsl.XslParseException;
34
35 /**
36  * Represents an xsl:with-param node from the stylesheet.
37  */

38 public class XslWithParam extends XslNode {
39   private String JavaDoc _name;
40   private String JavaDoc _select;
41
42   /**
43    * returns the tag name.
44    */

45   public String JavaDoc getTagName()
46   {
47     return "xsl:with-param";
48   }
49   
50   /**
51    * Adds an attribute.
52    */

53   public void addAttribute(QName name, String JavaDoc value)
54     throws XslParseException
55   {
56     if (name.getName().equals("name"))
57       _name = value;
58     else if (name.getName().equals("select"))
59       _select = value;
60     else
61       super.addAttribute(name, value);
62   }
63
64   /**
65    * Ends the attributes.
66    */

67   public void endAttributes()
68     throws XslParseException
69   {
70     if (_name == null)
71       throw error(L.l("xsl:with-param needs a 'name' attribute."));
72   }
73
74   /**
75    * Ends the element.
76    */

77   public void endElement()
78   {
79     addVariableCount();
80   }
81
82   /**
83    * Generates the code for the tag
84    *
85    * @param out the output writer for the generated java.
86    */

87   public void generate(JavaWriter out)
88     throws Exception JavaDoc
89   {
90     if (_select != null) {
91       out.print("_exprs[" + addExpr(_select) + "]");
92       out.println(".addVar(_xsl_arg" + _gen.getCallDepth() + ", \"" +
93           _name + "\", " +
94           "node, env);");
95     }
96     else {
97       String JavaDoc frag = "_xsl_frag_" + _gen.generateId();
98
99       out.println("Node " + frag + ";");
100       
101       printFragmentValue(out, frag);
102       
103       out.print("_xsl_arg" + _gen.getCallDepth() + ".addVar(\"");
104       out.print(_name);
105       out.println("\", " + frag + ");");
106     }
107   }
108 }
109
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