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/*
* esodata - data structures and other things, of varying utility
* Copyright 2022, Ben Culkin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package bjc.data;
/**
* A simple {@link ValueToggle} that swaps between true and false.
*
* @author EVE
*
*/
public class BooleanToggle implements Toggle<Boolean> {
/* The contained value. */
private boolean val;
/**
* Create a new, initially false, flip-flop.
*/
public BooleanToggle() {
this(false);
}
/**
* Create a flip-flop with the specified initial value.
*
* @param initial
* The initial value of the flip-flop.
*/
public BooleanToggle(final boolean initial) {
val = initial;
}
@Override
public Boolean get() {
final boolean res = val;
val = !res;
return res;
}
@Override
public Boolean peek() {
return val;
}
@Override
public void set(final boolean vl) {
val = vl;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (val ? 1231 : 1237);
return result;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (!(obj instanceof BooleanToggle)) return false;
final BooleanToggle other = (BooleanToggle) obj;
if (val != other.val) return false;
return true;
}
@Override
public String toString() {
return String.format("%s", val);
}
}
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