#14 Tightens up visibility.

src/main/java/net/logicsquad/pal/Code.java

@@ -6,7 +6,7 @@
  * @author Philip Roberts <[email protected]>
  * @author Paul Hoadley <[email protected]>
  */
-public class Code {
+final class Code {
 	/**
 	 * The three-letter mnemonic for this instruction.
 	 * 
@@ -44,7 +44,7 @@ public class Code {
 	 *            the line number in the source file where this instruction
 	 *            originated.
 	 */
-	public Code(String mnemonic, int first, Object second, int lineno) {
+	Code(String mnemonic, int first, Object second, int lineno) {
 		this.mnemonic = Mnemonic.valueOf(mnemonic);
 		this.first = first;
 		this.second = second;

src/main/java/net/logicsquad/pal/Data.java

@@ -6,7 +6,7 @@
  * @author Philip Roberts <[email protected]>
  * @author Paul Hoadley <[email protected]>
  */
-public class Data implements Cloneable {
+final class Data implements Cloneable {
 	/** The type of this datum. */
 	private int type;
 
@@ -37,7 +37,7 @@ public class Data implements Cloneable {
 	 *            An <code>Object</code> representing the value of this datum.
 	 * @see Code#Code
 	 */
-	public Data(int type, Object value) {
+	Data(int type, Object value) {
 		this.type = type;
 		this.value = value;
 		return;

src/main/java/net/logicsquad/pal/DataStack.java

@@ -9,7 +9,7 @@
  * @author Philip Roberts <[email protected]>
  * @author Paul Hoadley <[email protected]>
  */
-public class DataStack {
+final class DataStack {
 	/** A container for the <code>Data</code> objects. */
 	private List<Data> data;
 
@@ -25,7 +25,7 @@ public class DataStack {
 	/**
 	 * Default constructor. Assumes no limit on stack size.
 	 */
-	public DataStack() {
+	DataStack() {
 		this(0);
 	}
 
@@ -35,7 +35,7 @@ public DataStack() {
 	 * @param max
 	 *            Maximum stack size.
 	 */
-	public DataStack(int max) {
+	DataStack(int max) {
 		top = 0;
 
 		data = new ArrayList<Data>();

src/main/java/net/logicsquad/pal/Mnemonic.java

@@ -6,7 +6,7 @@
  * @author Philip Roberts <[email protected]>
  * @author Paul Hoadley <[email protected]>
  */
-public enum Mnemonic {
+enum Mnemonic {
 	/**
 	 * <code>CAL</code>
 	 */