henon entered the plan. i will "fast forward" the development speed

* Gitty.Core is now a "real" standalone project (git-sharp) and got its own solution.
* added testgui that can execute the unit tests. cool for debugging!!!
* ported a lot of unit tests and a lot of code to get them working
* fixed some errors in the existing ported code
* ... and had a lot of fun ;)

Signed-off-by: henon <meinrad.recheis@gmail.com>

.gitignore

@@ -7,3 +7,4 @@ bin
 obj
 *.user
 *.suo
+*.bak

AnyObjectId.cs

@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
  * Copyright (C) 2008, Kevin Thompson <kevin.thompson@theautomaters.com>
+ * Copyright (C) 2009, Henon <meinrad.recheis@gmail.com>
  *
  * All rights reserved.
  *
@@ -59,7 +60,7 @@ internal class Constants
             public static readonly int StringLength = ObjectIdLength * 2;
         }
 
-        
+
         public static bool operator ==(AnyObjectId a, AnyObjectId b)
         {
             if ((object)a == null)
@@ -81,7 +82,7 @@ internal class Constants
 
         public virtual bool Equals(AnyObjectId obj)
         {
-            return (obj != null) ? Equals(this, obj) : false;
+            return (obj != null) ? this == obj : false;
         }
 
         public override bool Equals(object obj)
@@ -231,7 +232,8 @@ public override string ToString()
             return new string(ToHexCharArray());
         }
 
-        public ObjectId Copy() {
+        public ObjectId Copy()
+        {
             if (this.GetType() == typeof(ObjectId))
                 return (ObjectId)this;
             return new ObjectId(this);

Commit.cs

@@ -3,6 +3,7 @@
  * Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
  * Copyright (C) 2007, Shawn O. Pearce <spearce@spearce.org>
  * Copyright (C) 2008, Kevin Thompson <kevin.thompson@theautomaters.com>
+ * Copyright (C) 2009, Henon <meinrad.recheis@gmail.com>
  *
  * All rights reserved.
  *
@@ -139,38 +140,38 @@ public Commit(Repository db, ObjectId id, byte[] raw)
         private ObjectId treeId;
 
         public ObjectId TreeId
-        {
-            get
-            {
-                return treeId;
-            }
-            set
-            {
-                if (treeId == null || !treeId.Equals(value))
-                {
-                    treeEntry = null;
-                }
-                treeId = value;
+        {
+            get
+            {
+                return treeId;
             }
-        }
-
+            set
+            {
+                if (treeId == null || !treeId.Equals(value))
+                {
+                    treeEntry = null;
+                }
+                treeId = value;
+            }
+        }
+
         private Tree treeEntry;
         public Tree TreeEntry
-        {
-            get
-            {
-                if (treeEntry == null)
-                {
-                    treeEntry = Repository.MapTree(this.TreeId);
-                    if (treeEntry == null)
-                        throw new MissingObjectException(this.TreeId, ObjectType.Tree);
-                }
-                return treeEntry;
-            }
-            set
-            {
-                treeId = value.TreeId;
-                treeEntry = value;
+        {
+            get
+            {
+                if (treeEntry == null)
+                {
+                    treeEntry = Repository.MapTree(this.TreeId);
+                    if (treeEntry == null)
+                        throw new MissingObjectException(this.TreeId, ObjectType.Tree);
+                }
+                return treeEntry;
+            }
+            set
+            {
+                treeId = value.TreeId;
+                treeEntry = value;
             }
         }
 
@@ -181,6 +182,27 @@ public Tree TreeEntry
         public Encoding Encoding { get; set; }
         public Repository Repository { get; protected set; }
 
+        // Returns all ancestor-commits of this commit
+        public IEnumerable<Commit> Ancestors
+        {
+            get
+            {
+                var ancestors = new Dictionary<ObjectId, Commit>();
+                CollectAncestorIdsRecursive(this, ancestors);
+                return ancestors.Values.ToArray();
+            }
+        }
+
+        private static void CollectAncestorIdsRecursive(Commit commit, Dictionary<ObjectId,Commit> ancestors)
+        {
+            foreach (var parent in commit.ParentIds.Where(id => !ancestors.ContainsKey(id)).Select(id => commit.Repository.OpenCommit(id)))
+            {
+                var parent_commit = parent as Commit;
+                ancestors[parent_commit.CommitId] = parent_commit;
+                CollectAncestorIdsRecursive(parent_commit, ancestors);
+            }
+        }
+
         private string message;
         public string Message
         {