Allow passing addresses to Buffer and Int* primitives.

src/com/bdjb/api/AbstractInt.java

@@ -18,6 +18,16 @@ abstract class AbstractInt extends Buffer {
     this.elementSize = elementSize;
   }
 
+  protected AbstractInt(long address, int[] dimensions, int elementSize) {
+    super(address, size(dimensions, elementSize));
+    this.dimensions = dimensions;
+    this.elementSize = elementSize;
+  }
+
+  protected AbstractInt(long address, int elementSize) {
+    this(address, new int[] {1}, elementSize);
+  }
+
   protected AbstractInt(int elementSize) {
     this(new int[] {1}, elementSize);
   }

src/com/bdjb/api/Buffer.java

@@ -22,13 +22,24 @@ public class Buffer {
 
   private final int size;
 
+  private final boolean allocated;
+
   public Buffer(int size) {
-    this.size = size;
     this.address = api.malloc(size);
+    this.size = size;
+    this.allocated = true;
+  }
+
+  public Buffer(long address, int size) {
+    this.address = address;
+    this.size = size;
+    this.allocated = false;
   }
 
   public void finalize() {
-    api.free(address);
+    if (allocated) {
+      api.free(address);
+    }
   }
 
   public long address() {

src/com/bdjb/api/Int16.java

@@ -10,17 +10,20 @@ package com.bdjb.api;
 public final class Int16 extends AbstractInt {
   public static final int SIZE = 2;
 
-  public Int16(int[] dimensions) {
-    super(dimensions, SIZE);
-  }
-
   public Int16() {
     super(SIZE);
   }
 
-  public Int16(short value) {
-    this();
-    this.set(value);
+  public Int16(long address) {
+    super(address, SIZE);
+  }
+
+  public Int16(int[] dimensions) {
+    super(dimensions, SIZE);
+  }
+
+  public Int16(long address, int[] dimensions) {
+    super(address, dimensions, SIZE);
   }
 
   public short get() {

src/com/bdjb/api/Int32.java

@@ -10,17 +10,20 @@ package com.bdjb.api;
 public final class Int32 extends AbstractInt {
   public static final int SIZE = 4;
 
-  public Int32(int[] dimensions) {
-    super(dimensions, SIZE);
-  }
-
   public Int32() {
     super(SIZE);
   }
 
-  public Int32(int value) {
-    this();
-    this.set(value);
+  public Int32(long address) {
+    super(address, SIZE);
+  }
+
+  public Int32(int[] dimensions) {
+    super(dimensions, SIZE);
+  }
+
+  public Int32(long address, int[] dimensions) {
+    super(address, dimensions, SIZE);
   }
 
   public int get() {

src/com/bdjb/api/Int64.java

@@ -10,17 +10,20 @@ package com.bdjb.api;
 public final class Int64 extends AbstractInt {
   public static final int SIZE = 8;
 
-  public Int64(int[] dimensions) {
-    super(dimensions, SIZE);
-  }
-
   public Int64() {
     super(SIZE);
   }
 
-  public Int64(long value) {
-    this();
-    this.set(value);
+  public Int64(long address) {
+    super(address, SIZE);
+  }
+
+  public Int64(int[] dimensions) {
+    super(dimensions, SIZE);
+  }
+
+  public Int64(long address, int[] dimensions) {
+    super(address, dimensions, SIZE);
   }
 
   public long get() {

src/com/bdjb/api/Int8.java

@@ -10,17 +10,20 @@ package com.bdjb.api;
 public final class Int8 extends AbstractInt {
   public static final int SIZE = 1;
 
-  public Int8(int[] dimensions) {
-    super(dimensions, SIZE);
-  }
-
   public Int8() {
     super(SIZE);
   }
 
-  public Int8(byte value) {
-    this();
-    this.set(value);
+  public Int8(long address) {
+    super(address, SIZE);
+  }
+
+  public Int8(int[] dimensions) {
+    super(dimensions, SIZE);
+  }
+
+  public Int8(long address, int[] dimensions) {
+    super(address, dimensions, SIZE);
   }
 
   public byte get() {