View Javadoc

    1   /*
    2    * Copyright 2002-2006 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16
    17  package org.apache.commons.jexl.parser;
    18
    19  import org.apache.commons.jexl.JexlContext;
    20  import org.apache.commons.jexl.util.Coercion;
    21
    22  /***
    23   * Bitwise Or. Syntax: a ^ b Result is a Long
    24   *
    25   * @author Dion Gillard
    26   * @since 1.1
    27   */
    28  public class ASTBitwiseXorNode extends SimpleNode {
    29      /***
    30       * Create the node given an id.
    31       *
    32       * @param id node id.
    33       */
    34      public ASTBitwiseXorNode(int id) {
    35          super(id);
    36      }
    37
    38      /***
    39       * Create a node with the given parser and id.
    40       *
    41       * @param p a parser.
    42       * @param id node id.
    43       */
    44      public ASTBitwiseXorNode(Parser p, int id) {
    45          super(p, id);
    46      }
    47
    48      /***
    49       * {@inheritDoc}
    50       */
    51      public Object jjtAccept(ParserVisitor visitor, Object data) {
    52          return visitor.visit(this, data);
    53      }
    54
    55      /***
    56       * {@inheritDoc}
    57       */
    58      public Object value(JexlContext context) throws Exception {
    59          Object left = ((SimpleNode) jjtGetChild(0)).value(context);
    60          Object right = ((SimpleNode) jjtGetChild(1)).value(context);
    61
    62          Long l = left == null ? new Long(0) : Coercion.coerceLong(left);
    63          Long r = right == null ? new Long(0) : Coercion.coerceLong(right);
    64          return new Long(l.longValue() ^ r.longValue());
    65      }
    66  }