/***************************************************************************
* Copyright (C) by Fabrizio Montesi *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* For details about the authors of this software, see the AUTHORS file. *
***************************************************************************/
package jolie.runtime.expression;
import jolie.lang.Constants;
import jolie.process.TransformationReason;
import jolie.runtime.Value;
public class SumExpression implements Expression
{
final private Operand[] children;
public SumExpression( Operand[] children )
{
this.children = children;
}
public Expression cloneExpression( TransformationReason reason )
{
Operand[] cc = new Operand[ children.length ];
int i = 0;
for( Operand operand : children ) {
cc[i++] = new Operand( operand.type(), operand.expression().cloneExpression( reason ) );
}
return new SumExpression( cc );
}
public Value evaluate()
{
Value val = Value.create( children[0].expression().evaluate() );
for( int i = 1; i < children.length; i++ ) {
if ( children[i].type() == Constants.OperandType.ADD ) {
val.add( children[i].expression().evaluate() );
} else {
val.subtract( children[i].expression().evaluate() );
}
}
return val;
}
}