org.apache.el.parser.AstNegative Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Generated By:JJTree: Do not edit this line. AstNegative.java */
package org.apache.el.parser;
import java.math.BigDecimal;
import java.math.BigInteger;
import javax.el.ELException;
import org.apache.el.lang.EvaluationContext;
/**
* @author Jacob Hookom [[email protected]]
* @version $Id: AstNegative.java 939311 2010-04-29 14:01:02Z kkolinko $
*/
public final class AstNegative extends SimpleNode {
public AstNegative(int id) {
super(id);
}
@Override
public Class getType(EvaluationContext ctx)
throws ELException {
return Number.class;
}
@Override
public Object getValue(EvaluationContext ctx)
throws ELException {
Object obj = this.children[0].getValue(ctx);
if (obj == null) {
return new Long(0);
}
if (obj instanceof BigDecimal) {
return ((BigDecimal) obj).negate();
}
if (obj instanceof BigInteger) {
return ((BigInteger) obj).negate();
}
if (obj instanceof String) {
if (isStringFloat((String) obj)) {
return new Double(-Double.parseDouble((String) obj));
}
return new Long(-Long.parseLong((String) obj));
}
if (obj instanceof Long) {
return new Long(-((Long) obj).longValue());
}
if (obj instanceof Double) {
return new Double(-((Double) obj).doubleValue());
}
if (obj instanceof Integer) {
return new Integer(-((Integer) obj).intValue());
}
if (obj instanceof Float) {
return new Float(-((Float) obj).floatValue());
}
if (obj instanceof Short) {
return new Short((short) -((Short) obj).shortValue());
}
if (obj instanceof Byte) {
return new Byte((byte) -((Byte) obj).byteValue());
}
Long num = (Long) coerceToNumber(obj, Long.class);
return new Long(-num.longValue());
}
}