/**
 * Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite.symbolic.expr.fp;

import java.util.HashSet;
import java.util.Set;

import org.evosuite.symbolic.expr.AbstractExpression;
import org.evosuite.symbolic.expr.ExpressionVisitor;
import org.evosuite.symbolic.expr.Variable;

public final class RealConstant extends AbstractExpression<Double> implements RealValue {
	private static final long serialVersionUID = 1L;

	/**
	 * <p>
	 * Constructor for RealConstant.
	 * </p>
	 * 
	 * @param doubleValue
	 *            a double.
	 */
	public RealConstant(double doubleValue) {
		super(doubleValue, 1, false);
	}

	/** {@inheritDoc} */
	@Override
	public String toString() {
		return Double.toString(this.concreteValue);
	}

	/** {@inheritDoc} */
	@Override
	public boolean equals(Object obj) {
		if (obj instanceof RealConstant) {
			RealConstant v = (RealConstant) obj;
			return this.concreteValue.equals(v.concreteValue);
		}
		return false;
	}

	@Override
	public int hashCode() {
		return this.concreteValue.hashCode();
	}

	@Override
	public Set<Variable<?>> getVariables() {
		Set<Variable<?>> variables = new HashSet<Variable<?>>();
		return variables;
	}

	@Override
	public <K, V> K accept(ExpressionVisitor<K, V> v, V arg) {
		return v.visit(this, arg);
	}
}