/*
* Copyright 2008 Fedora Commons
*
* Licensed 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.
*/
package org.mulgara.sparql.parser.cst;
import java.util.ArrayList;
/**
* An addition operator expression.
*
* @created Feb 13, 2008
* @author Paula Gearon
* @copyright © 2008 <a href="http://www.fedora-commons.org/">Fedora Commons</a>
* @licence <a href="{@docRoot}/../LICENCE.txt">Apache License, Version 2.0</a>
*/
public class Plus extends AssociativeNumericOpExpression {
/**
* Creates the addition operation
* @param lhs The first expression
* @param rhs The expression to be added to the lhs
*/
public Plus(Expression lhs, Expression rhs) {
this((NumericExpression)lhs, (NumericExpression)rhs);
}
/**
* Creates the addition operation
* @param lhs The first expression
* @param rhs The expression to be added to the lhs
*/
public Plus(NumericExpression lhs, NumericExpression rhs) {
super(new ArrayList<NumericExpression>());
if (lhs instanceof Plus) {
operands.addAll(((Plus)lhs).operands);
} else {
operands.add(lhs);
}
operands.add(rhs);
}
/**
* @see org.mulgara.sparql.parser.cst.AbstractNaryOperator#getOperatorString()
*/
@Override
protected String getOperatorString() {
return "+";
}
}