analysis/org.eclipse.tracecompass.analysis.lami.core/src/org/eclipse/tracecompass/internal/provisional/analysis/lami/core/types/LamiUnknown.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015, 2016 EfficiOS Inc., Alexandre Montplaisir
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *******************************************************************************/
   9
  10 package org.eclipse.tracecompass.internal.provisional.analysis.lami.core.types;
  11
  12 import org.eclipse.jdt.annotation.Nullable;
  13
  14 /**
  15  * Lami 'unknown' value.
  16  *
  17  * The special unknown object represents an unknown value. It is typically used
  18  * in result table cells where a given computation cannot produce a result for
  19  * some reason.
  20  *
  21  * @author Alexandre Montplaisir
  22  */
  23 class LamiUnknown extends LamiData {
  24
  25     public static final LamiUnknown INSTANCE = new LamiUnknown();
  26
  27     private LamiUnknown() {}
  28
  29     @Override
  30     public @Nullable String toString() {
  31         return null;
  32     }
  33 }