package javaforce;

/**

*

* @author pquiring

*

* Created : Sept 17, 2013

*/

import java.util.*;

public class JFArrayInt {

private int[] buf;

private int count;

public static int initSize = 64;

public JFArrayInt() {

count = 0;

buf = new int[initSize];

}

public int size() {

return count;

}

public void clear() {

count = 0;

if (buf.length != initSize) buf = new int[initSize];

}

public void append(int s) {

int newcount = count + 1;

if (newcount > buf.length) {

buf = Arrays.copyOf(buf, Math.max(buf.length << 1, newcount));

}

buf[count] = s;

count = newcount;

}

public void append(int[] s) {

int newcount = count + s.length;

if (newcount > buf.length) {

buf = Arrays.copyOf(buf, Math.max(buf.length << 1, newcount));

}

System.arraycopy(s, 0, buf, count, s.length);

count = newcount;

}

public void set(int[] s, int pos) {

int newcount = pos + s.length;

if (newcount > buf.length) {

buf = Arrays.copyOf(buf, Math.max(buf.length << 1, newcount));

}

System.arraycopy(s, 0, buf, pos, s.length);

}

public int[] toArray(int pos, int length) {

return Arrays.copyOfRange(buf, pos, pos + length);

}

public int[] toArray() {

return Arrays.copyOf(buf, count);

}

//returns the backing buffer (size may be larger than expected)

public int[] getBuffer() {

return buf;

}

}