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package org.apache.commons.jexl.parser; |
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import java.math.BigDecimal; |
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import java.math.BigInteger; |
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import org.apache.commons.jexl.JexlContext; |
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public class ASTUnaryMinusNode extends SimpleNode { |
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public ASTUnaryMinusNode(int id) { |
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super(id); |
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} |
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public ASTUnaryMinusNode(Parser p, int id) { |
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super(p, id); |
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} |
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public Object jjtAccept(ParserVisitor visitor, Object data) { |
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return visitor.visit(this, data); |
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} |
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public Object value(JexlContext jc) throws Exception { |
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Object val = ((SimpleNode) jjtGetChild(0)).value(jc); |
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if (val instanceof Byte) { |
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byte valueAsByte = ((Byte) val).byteValue(); |
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return new Byte((byte) -valueAsByte); |
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} else if (val instanceof Short) { |
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short valueAsShort = ((Short) val).class="keyword">shortValue(); |
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return new Short((short) -valueAsShort); |
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} else if (val instanceof Integer) { |
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int valueAsInt = ((Integer) val).class="keyword">intValue(); |
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return new Integer(-valueAsInt); |
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} else if (val instanceof Long) { |
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long valueAsLong = ((Long) val).class="keyword">longValue(); |
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return new Long(-valueAsLong); |
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} else if (val instanceof Float) { |
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float valueAsFloat = ((Float) val).class="keyword">floatValue(); |
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return new Float(-valueAsFloat); |
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} else if (val instanceof Double) { |
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double valueAsDouble = ((Double) val).class="keyword">doubleValue(); |
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return new Double(-valueAsDouble); |
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} else if (val instanceof BigDecimal) { |
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BigDecimal valueAsBigD = (BigDecimal) val; |
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return valueAsBigD.negate(); |
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} else if (val instanceof BigInteger) { |
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BigInteger valueAsBigI = (BigInteger) val; |
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return valueAsBigI.negate(); |
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} |
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throw new Exception("expression not a number"); |
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} |
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} |