Quelle AstNegative.java Sprache: JAVA

/*
* 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 jakarta.el.ELException;

import org.apache.el.lang.ELSupport;
import org.apache.el.lang.EvaluationContext;

/**
* @author Jacob Hookom [jacob@hookom.net]
*/
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 Long.valueOf(0);
        }
        if (obj instanceof BigDecimal) {
            return ((BigDecimal) obj).negate();
        }
        if (obj instanceof BigInteger) {
            return ((BigInteger) obj).negate();
        }
        if (obj instanceof String) {
            if (ELSupport.isStringFloat((String) obj)) {
                return Double.valueOf(-Double.parseDouble((String) obj));
            }
            return Long.valueOf(-Long.parseLong((String) obj));
        }
        if (obj instanceof Long) {
            return Long.valueOf(-((Long) obj).longValue());
        }
        if (obj instanceof Double) {
            return Double.valueOf(-((Double) obj).doubleValue());
        }
        if (obj instanceof Integer) {
            return Integer.valueOf(-((Integer) obj).intValue());
        }
        if (obj instanceof Float) {
            return Float.valueOf(-((Float) obj).floatValue());
        }
        if (obj instanceof Short) {
            return Short.valueOf((short) -((Short) obj).shortValue());
        }
        if (obj instanceof Byte) {
            return Byte.valueOf((byte) -((Byte) obj).byteValue());
        }
        Long num = (Long) ELSupport.coerceToNumber(ctx, obj, Long.class);
        return Long.valueOf(-num.longValue());
    }
}

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