/***************************************************************************
* 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 java.util.concurrent.locks.Condition;
import jolie.process.TransformationReason;
import jolie.runtime.Value;
/** Provides the support for a "logical and" chain of other conditions.
*
* @author Fabrizio Montesi
* @see Condition
*/
public class AndCondition implements Expression
{
private final Expression[] children;
/** Constructor */
public AndCondition( Expression[] children )
{
this.children = children;
}
public Expression cloneExpression( TransformationReason reason )
{
return new AndCondition( children );
}
/** Applies the "logical and" rule.
* Implemented as short and: starting from left, the first condition that
* evaluates as false makes this "logical and" condition
* evaluation returning false, without checking the other conditions.
* @return true if every condition is satisfied, false otherwise.
*/
public Value evaluate()
{
for( Expression condition : children ) {
if ( condition.evaluate().boolValue() == false ) {
return Value.create( false );
}
}
return Value.create( true );
}
}