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/*
* Copyright (C) 2014-2016 Brian L. Browning
*
* This file is part of Beagle
*
* Beagle 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.
*
* Beagle 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 <http://www.gnu.org/licenses/>.
*/
package ints;
import java.util.Arrays;
/**
* <p>Class {@code WrappedIntArray} represents an immutable
* {@code int[]} array.
* </p>
* Instances of {@code WrappedIntArray} are immutable.
*
* @author Brian L. Browning {@code <browning@uw.edu>}
*/
public final class WrappedIntArray implements IntArray {
private final int[] ia;
/**
* Constructs a new {@code WrappedIntArray} instance.
* @param ia an array of integers
* @throws NullPointerException if {@code ia == null}
*/
public WrappedIntArray(int[] ia) {
this.ia = ia.clone();
}
/**
* Constructs a new {@code WrappedIntArray} instance.
* @param ia an array of integers
* @param valueSize the exclusive end of the range of non-negative
* array values
* @throws IllegalArgumentException if
* {@code (ia[j] < 0 || ia[j] > valueSize)} for any index {@code j}
* satisfying {@code (j >= 0 && j < ia.length)}
* @throws NullPointerException if {@code ia == null}
*/
public WrappedIntArray(int[] ia, int valueSize) {
this.ia = new int[ia.length];
for (int j=0; j<ia.length; ++j) {
if (ia[j]<0 || ia[j]>=valueSize) {
throw new IllegalArgumentException(String.valueOf(ia[j]));
}
this.ia[j] = ia[j];
}
}
/**
* Constructs a new {@code WrappedIntArray} instance.
* @param il a list of integers
* @throws NullPointerException if {@code il == null}
*/
public WrappedIntArray(IntList il) {
this.ia = il.toArray();
}
/**
* Constructs a new {@code WrappedIntArray} instance.
* @param il a list of integers
* @param valueSize the exclusive end of the range of non-negative
* array values
* @throws IllegalArgumentException if
* {@code (il[j] < 0 || il[j] > valueSize)} for any index {@code j}
* satisfying {@code (j >= 0 && j < il.length)}
* @throws NullPointerException if {@code il == null}
*/
public WrappedIntArray(IntList il, int valueSize) {
this.ia = new int[il.size()];
for (int j=0; j<ia.length; ++j) {
int value = il.get(j);
if (value<0 || value>=valueSize) {
throw new IllegalArgumentException(String.valueOf(value));
}
ia[j] = value;
}
}
@Override
public int size() {
return ia.length;
}
@Override
public int get(int index) {
return ia[index];
}
@Override
public String toString() {
return Arrays.toString(ia);
}
}
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