1 package org.apache.commons.ognl;
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 /**
23 * $Id: ASTBitAnd.java 1194869 2011-10-29 11:10:16Z mcucchiara $
24 * @author Luke Blanshard (blanshlu@netscape.net)
25 * @author Drew Davidson (drew@ognl.org)
26 */
27 class ASTBitAnd
28 extends NumericExpression
29 {
30 public ASTBitAnd( int id )
31 {
32 super( id );
33 }
34
35 public ASTBitAnd( OgnlParser p, int id )
36 {
37 super( p, id );
38 }
39
40 public void jjtClose()
41 {
42 flattenTree();
43 }
44
45 protected Object getValueBody( OgnlContext context, Object source )
46 throws OgnlException
47 {
48 Object result = children[0].getValue( context, source );
49 for ( int i = 1; i < children.length; ++i )
50 {
51 result = OgnlOps.binaryAnd( result, children[i].getValue( context, source ) );
52 }
53 return result;
54 }
55
56 public String getExpressionOperator( int index )
57 {
58 return "&";
59 }
60
61 public String coerceToNumeric( String source, OgnlContext context, Node child )
62 {
63 return "(long)" + super.coerceToNumeric( source, context, child );
64 }
65
66 public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data )
67 throws OgnlException
68 {
69 return visitor.visit( this, data );
70 }
71 }