statesystem/org.eclipse.tracecompass.statesystem.core/src/org/eclipse/tracecompass/statesystem/core/statevalue/IntegerStateValue.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2014 Ericsson
   3  * Copyright (c) 2010, 2011 École Polytechnique de Montréal
   4  * Copyright (c) 2010, 2011 Alexandre Montplaisir <alexandre.montplaisir@gmail.com>
   5  *
   6  * All rights reserved. This program and the accompanying materials are
   7  * made available under the terms of the Eclipse Public License v1.0 which
   8  * accompanies this distribution, and is available at
   9  * http://www.eclipse.org/legal/epl-v10.html
  10  *
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.statesystem.core.statevalue;
  14
  15 import org.eclipse.jdt.annotation.Nullable;
  16 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  17
  18 /**
  19  * A state value containing a simple integer.
  20  *
  21  * @version 1.0
  22  * @author Alexandre Montplaisir
  23  */
  24 final class IntegerStateValue extends TmfStateValue {
  25
  26     private final int value;
  27
  28     public IntegerStateValue(int valueAsInt) {
  29         this.value = valueAsInt;
  30     }
  31
  32     @Override
  33     public Type getType() {
  34         return Type.INTEGER;
  35     }
  36
  37     @Override
  38     public boolean isNull() {
  39         return false;
  40     }
  41
  42     @Override
  43     public boolean equals(@Nullable Object object) {
  44         if (!(object instanceof IntegerStateValue)) {
  45             return false;
  46         }
  47         IntegerStateValue other = (IntegerStateValue) object;
  48         return (this.value == other.value);
  49     }
  50
  51     @Override
  52     public int hashCode() {
  53         return value;
  54     }
  55
  56     @Override
  57     public @Nullable String toString() {
  58         return String.format("%3d", value); //$NON-NLS-1$
  59     }
  60
  61     // ------------------------------------------------------------------------
  62     // Unboxing methods
  63     // ------------------------------------------------------------------------
  64
  65     @Override
  66     public int unboxInt() {
  67         return value;
  68     }
  69
  70     @Override
  71     public long unboxLong() {
  72         /* It's always safe to up-cast an int into a long */
  73         return value;
  74     }
  75
  76     @Override
  77     public int compareTo(@Nullable ITmfStateValue other) {
  78         if (other == null) {
  79             throw new IllegalArgumentException();
  80         }
  81
  82         switch (other.getType()) {
  83         case INTEGER:
  84             IntegerStateValue otherIntValue = (IntegerStateValue) other;
  85             return Integer.compare(this.value, otherIntValue.value);
  86         case DOUBLE:
  87             double otherDoubleValue = ((DoubleStateValue) other).unboxDouble();
  88             return Double.compare(this.value, otherDoubleValue);
  89         case LONG:
  90             long otherLongValue = ((LongStateValue) other).unboxLong();
  91             return Long.compare(this.value, otherLongValue);
  92         case NULL:
  93             return Integer.compare(this.value, other.unboxInt());
  94         case STRING:
  95             throw new StateValueTypeException("An Integer state value cannot be compared to a String state value."); //$NON-NLS-1$
  96         default:
  97             throw new StateValueTypeException("An Integer state value cannot be compared to the type " + other.getType()); //$NON-NLS-1$
  98         }
  99
 100     }
 101
 102 }