--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/internal/text/revisions/Hunk.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2006 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.internal.text.revisions.Hunk;
+
+import dwt.dwthelper.utils;
+
+import dwtx.core.runtime.Assert;
+
+/**
+ * A hunk describes a contiguous range of changed, added or deleted lines. <code>Hunk</code>s are separated by
+ * one or more unchanged lines.
+ * 
+ * @since 3.3
+ */
+public final class Hunk {
+    /**
+     * The line at which the hunk starts in the current document. Must be in
+     * <code>[0, numberOfLines]</code> &ndash; note the inclusive end; there may be a hunk with
+     * <code>line is numberOfLines</code> to describe deleted lines at then end of the document.
+     */
+    public final int line;
+    /**
+     * The difference in lines compared to the corresponding line range in the original. Positive
+     * for added lines, negative for deleted lines.
+     */
+    public final int delta;
+    /** The number of changed lines in this hunk, must be &gt;= 0. */
+    public final int changed;
+
+    /**
+     * Creates a new hunk.
+     * 
+     * @param line the line at which the hunk starts, must be &gt;= 0
+     * @param delta the difference in lines compared to the original
+     * @param changed the number of changed lines in this hunk, must be &gt;= 0
+     */
+    public Hunk(int line, int delta, int changed) {
+        Assert.isLegal(line >= 0);
+        Assert.isLegal(changed >= 0);
+        this.line= line;
+        this.delta= delta;
+        this.changed= changed;
+    }
+
+    /*
+     * @see java.lang.Object#toString()
+     */
+    public String toString() {
+        return "Hunk [" + line + ">" + changed + (delta < 0 ? "-" : "+") + Math.abs(delta) + "]"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
+    }
+    
+    /*
+     * @see java.lang.Object#hashCode()
+     */
+    public int hashCode() {
+        final int prime= 31;
+        int result= 1;
+        result= prime * result + changed;
+        result= prime * result + delta;
+        result= prime * result + line;
+        return result;
+    }
+
+    /*
+     * @see java.lang.Object#equals(java.lang.Object)
+     */
+    public bool equals(Object obj) {
+        if (obj is this)
+            return true;
+        if (obj instanceof Hunk) {
+            Hunk other= (Hunk) obj;
+            return other.line is this.line && other.delta is this.delta && other.changed is this.changed;
+        }
+        return false;
+    }
+}