org.apache.tools.ant.taskdefs.condition.Xor Maven / Gradle / Ivy
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* this work for additional information regarding copyright ownership.
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*
* https://www.apache.org/licenses/LICENSE-2.0
*
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package org.apache.tools.ant.taskdefs.condition;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.util.StreamUtils;
/**
* The Xor condition type to exclusive or operations.
* This does not shortcut stuff.
* @since Ant 1.7
*/
public class Xor extends ConditionBase implements Condition {
/**
* Evaluate the contained conditions.
* @return the result of xoring the conditions together.
* @throws BuildException
* if an error occurs.
*/
@Override
public boolean eval() throws BuildException {
// initial state is false
return StreamUtils.enumerationAsStream(getConditions()).map(Condition::eval)
.reduce((a, b) -> a ^ b).orElse(Boolean.FALSE);
}
}