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/*
* Copyright (C) 2014-2021 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;
/**
/**
* <p>Class {@code UnsignedByteArray} represents an immutable
* array of integer values between 0 and 65,535 inclusive that is stored
* as a {@code char[]} array.
* </p>
* Instances of {@code CharArray} are immutable.
*
* @author Brian L. Browning {@code <browning@uw.edu>}
*/
public final class CharArray implements IntArray {
private final char[] ca;
/**
* Constructs a new {@code CharArray} instance from the specified data.
* The array of bytes is interpreted as a stream of characters with
* the high byte preceding the low byte.
* @param ba an array of char values expressed as pairs of bytes.
* @throws IllegalArgumentException if {@code (ba.length % 1) != 0}
* @throws NullPointerException if {@code ca == null}
*/
public CharArray(byte[] ba) {
if ((ba.length % 1)!=0) {
throw new IllegalArgumentException(String.valueOf(ba.length));
}
this.ca = new char[ba.length/2];
for (int j=0; j<ba.length; j+=2) {
int b1 = ba[j] & 0xff;
int b2 = ba[j+1] & 0xff;
ca[j/2] = (char) ((b1 << 8) + b2);
}
}
/**
* Constructs a new {@code CharArray} instance from
* the specified data.
* @param ca an array of integer values between 0 and Character.MAX_VALUE
* inclusive
* @throws NullPointerException if {@code ca == null}
*/
public CharArray(char[] ca) {
this.ca = ca.clone();
}
/**
* Constructs a new {@code CharArray} instance from the specified data.
* @param ia an array of integers
* @throws IllegalArgumentException if
* {@code (ia[j] < 0 || ia[j] > Character.MAX_VALUE)} for any index
* {@code j} satisfying {@code (j >= from && j < to)}
* @throws NullPointerException if {@code ia == null}
*/
public CharArray(int[] ia) {
this(ia, 0, ia.length);
}
/**
* Constructs a new {@code UnsignedByteArray} instance from the specified data.
* @param il an list of integer values between 0 and
* {@code Character.MAX_VALUE} inclusive
* @throws IllegalArgumentException if
* {@code (il.get(j) < 0 || il.get(j) > Character.MAX_VALUE)} for any index
* {@code j} satisfying {@code (j >= 0 && j < il.size())}
* @throws NullPointerException if {@code il == null}
*/
public CharArray(IntList il) {
this(il, 0, il.size());
}
/**
* Constructs a new {@code CharArray} instance from the specified data.
* @param ia an array of nonnegative integers
* @param valueSize the exclusive end of the range of non-negative
* array values
* @throws IllegalArgumentException if
* {@code (valueSize < 1) || (valueSize >= (Character.MAX_VALUE + 1))}
* @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 CharArray(int[] ia, int valueSize) {
if (valueSize < 1 || valueSize > Character.MAX_VALUE+1) {
throw new IllegalArgumentException(String.valueOf(valueSize));
}
this.ca = new char[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.ca[j] = (char) ia[j];
}
}
/**
* Constructs a new {@code CharArray} instance from the specified data.
* @param il an list of nonnegative integer
* @param valueSize the exclusive end of the range of non-negative
* array values
* @throws IllegalArgumentException if
* {@code (valueSize < 1) || (valueSize >= (Character.MAX_VALUE + 1))}
* @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 il == null}
*/
public CharArray(IntList il, int valueSize) {
if (valueSize < 1 || valueSize > Character.MAX_VALUE+1) {
throw new IllegalArgumentException(String.valueOf(valueSize));
}
this.ca = new char[il.size()];
for (int j=0; j<ca.length; ++j) {
int value = il.get(j);
if (value<0 || value>=valueSize) {
throw new IllegalArgumentException(String.valueOf(value));
}
this.ca[j] = (char) value;
}
}
/**
* Constructs a new {@code CharArray} instance from the
* specified data.
* @param ia an array of integer values between 0 and
* {@code Character.MAX_VALUE} inclusive
* @param to the first element to be included (inclusive)
* @param from the last element to be included (exclusive)
* @throws IllegalArgumentException if
* {@code (ia[j] < 0 || ia[j] > Character.MAX_VALUE)} for any index
* {@code j} satisfying {@code (j >= from && j < to)}
* @throws IndexOutOfBoundsException if {@code (from < 0 || to > ia.length)}
* @throws NegativeArraySizeException if {@code to > from}
* @throws NullPointerException if {@code ia == null}
*/
public CharArray(int[] ia, int to, int from) {
this.ca = new char[from - to];
for (int j=to; j<from; ++j) {
if (ia[j] < 0 || ia[j] > Character.MAX_VALUE) {
throw new IllegalArgumentException(String.valueOf(ia[j]));
}
ca[j - to] = (char) ia[j];
}
}
/**
* Constructs a new {@code CharArray} instance from the specified data.
* @param il an list of integer values between 0 and
* {@code Character.MAX_VALUE} inclusive
* @param from the first element to be included (inclusive)
* @param to the last element to be included (exclusive)
* @throws IllegalArgumentException if
* {@code (il.get(j) < 0 || il.get(j) > Character.MAX_VALUE)} for any index {@code j}
* satisfying {@code (j >= from && j < to)}
* @throws IndexOutOfBoundsException if {@code from < 0 || to > il.length}
* @throws NegativeArraySizeException if {@code to > from}
* @throws NullPointerException if {@code il == null}
*/
public CharArray(IntList il, int from, int to) {
this.ca = new char[to - from];
for (int j=from; j<to; ++j) {
int value = il.get(j);
if (value < 0 || value > Character.MAX_VALUE) {
throw new IllegalArgumentException(String.valueOf(value));
}
ca[j - from] = (char) value;
}
}
@Override
public int size() {
return ca.length;
}
@Override
public int get(int index) {
return ca[index];
}
}
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