1 package org.apache.velocity.runtime.parser.node;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.io.Writer;
23 import java.io.IOException;
24
25 import org.apache.velocity.context.InternalContextAdapter;
26 import org.apache.velocity.runtime.parser.Parser;
27 import org.apache.velocity.runtime.parser.ParserVisitor;
28
29 /**
30 * This class is responsible for handling Escapes
31 * in VTL.
32 *
33 * Please look at the Parser.jjt file which is
34 * what controls the generation of this class.
35 *
36 * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
37 * @version $Id: ASTEscape.java 471381 2006-11-05 08:56:58Z wglass $
38 */
39 public class ASTEscape extends SimpleNode
40 {
41 /** Used by the parser */
42 public String val;
43 private char[] ctext;
44
45 /**
46 * @param id
47 */
48 public ASTEscape(int id)
49 {
50 super(id);
51 }
52
53 /**
54 * @param p
55 * @param id
56 */
57 public ASTEscape(Parser p, int id)
58 {
59 super(p, id);
60 }
61
62 /**
63 * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)
64 */
65 public Object jjtAccept(ParserVisitor visitor, Object data)
66 {
67 return visitor.visit(this, data);
68 }
69
70 /**
71 * @see org.apache.velocity.runtime.parser.node.SimpleNode#init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object)
72 */
73 public Object init( InternalContextAdapter context, Object data)
74 {
75 ctext = val.toCharArray();
76 return data;
77 }
78
79 /**
80 * @see org.apache.velocity.runtime.parser.node.SimpleNode#render(org.apache.velocity.context.InternalContextAdapter, java.io.Writer)
81 */
82 public boolean render( InternalContextAdapter context, Writer writer)
83 throws IOException
84 {
85 if (context.getAllowRendering())
86 {
87 writer.write(ctext);
88 }
89 return true;
90 }
91 }