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/*******************************************************************************
* Copyright (c) 2009, 2017 Cloudsmith Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Cloudsmith Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.metadata.expression;
import java.util.Iterator;
import org.eclipse.equinox.p2.metadata.expression.IEvaluationContext;
/**
* An expression representing a variable stack in the current thread.
*/
class Assignment extends Binary {
Assignment(Variable variable, Expression expression) {
super(variable, expression);
}
@Override
public final Object evaluate(IEvaluationContext context) {
Object value = rhs.evaluate(context);
context.setValue(lhs, value);
return value;
}
@Override
public int getExpressionType() {
return TYPE_ASSIGNMENT;
}
@Override
public int getPriority() {
return IExpressionConstants.PRIORITY_ASSIGNMENT;
}
@Override
public String getOperator() {
return OPERATOR_ASSIGN;
}
@Override
public Iterator<?> evaluateAsIterator(IEvaluationContext context) {
Iterator<?> value = rhs.evaluateAsIterator(context);
context.setValue(lhs, value);
return value;
}
}
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