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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.indexinglanguage;
import com.yahoo.vespa.indexinglanguage.expressions.Expression;
/**
* @author Simon Thoresen Hult
*/
public abstract class ExpressionVisitor {
private final MyConverter converter = new MyConverter();
public void visit(Expression exp) {
converter.convert(exp);
}
protected abstract void doVisit(Expression exp);
private class MyConverter extends ExpressionConverter {
@Override
protected boolean shouldConvert(Expression exp) {
doVisit(exp);
return false;
}
@Override
protected Expression doConvert(Expression exp) {
throw new AssertionError();
}
}
}
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