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17 package org.apache.commons.jexl.parser;
18
19 import org.apache.commons.jexl.JexlContext;
20
21 /***
22 * { code }, a block of statements enclosed in curly braces.
23 *
24 * @author Dion Gillard
25 *
26 */
27 public class ASTBlock extends SimpleNode {
28 /***
29 * Create the node given an id.
30 *
31 * @param id node id.
32 */
33 public ASTBlock(int id) {
34 super(id);
35 }
36
37 /***
38 * Create a node with the given parser and id.
39 *
40 * @param p a parser.
41 * @param id node id.
42 */
43 public ASTBlock(Parser p, int id) {
44 super(p, id);
45 }
46
47 /*** {@inheritDoc} */
48 public Object jjtAccept(ParserVisitor visitor, Object data) {
49 return visitor.visit(this, data);
50 }
51
52 /***
53 * @return the value of the block. Execute all statements inside and return
54 * the value of the last.
55 * @param context the {@link JexlContext} to execute against.
56 * @throws Exception on any error.
57 */
58 public Object value(JexlContext context) throws Exception {
59 int numChildren = jjtGetNumChildren();
60 Object result = null;
61 for (int i = 0; i < numChildren; i++) {
62 result = ((SimpleNode) jjtGetChild(i)).value(context);
63 }
64 return result;
65 }
66
67 }