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72 lines
1.9 KiB
72 lines
1.9 KiB
//==============================================================================
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//
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// Copyright (c) 2013-
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// Authors:
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// * Ernst Moritz Hahn <emhahn@cs.ox.ac.uk> (University of Oxford)
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//
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//------------------------------------------------------------------------------
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//
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// This file is part of PRISM.
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//
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// PRISM is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// PRISM is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with PRISM; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//==============================================================================
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package param;
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/**
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* A state value which can be represented as a truth value.
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* The truth value the object represents cannot be changed once this object
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* is created.
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*
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* @author Ernst Moritz Hahn <emhahn@cs.ox.ac.uk> (University of Oxford)
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*/
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final class StateBoolean extends StateValue {
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private boolean value;
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public StateBoolean()
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{
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value = new Boolean(false);
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}
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public StateBoolean(boolean value)
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{
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this.value = value;
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}
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boolean getValue()
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{
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return value;
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}
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@Override
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public String toString()
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{
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return value ? "true" : "false";
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}
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@Override
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public boolean equals(Object obj) {
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if (!(obj instanceof StateBoolean)) {
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return false;
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}
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return this.value == ((StateBoolean) obj).value;
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}
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@Override
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public int hashCode() {
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return value ? 17 : 13;
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}
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}
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