Added work-in-progress std::vector interop support.

src/Runtime/StdVector.cs

@@ -19,23 +19,76 @@
  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
 
+#define MSVC
+
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Runtime.InteropServices;
 using CppSharp.Runtime;
 
 namespace Std
 {
-    public struct Vector
+    [StructLayout(LayoutKind.Sequential)]
+    public unsafe struct Vector
+    {
+#if MSVC
+        public byte* _Myfirst;
+        public byte* _Mylast;
+        public byte* _Myend;
+#endif
+
+        public long Size()
+        {
+            return _Mylast - _Myfirst;
+        }
+
+        public bool Capacity()
+        {
+            return (_Myend - _Myfirst) != 0;
+        }
+
+        public bool UnusedCapacity()
+        {
+            return (_Myend - _Mylast) != 0;
+        }
+
+        public bool HasUnusedCapacity()
+        {
+            return _Myend != _Mylast;
+        }
+
+        public void Add<T>(T item) where T : ICppMarshal
+        {
+            item.MarshalManagedToNative(new IntPtr(_Mylast));
+            _Mylast += item.NativeDataSize;
+        }
+
+        public void ReserveNew(long count, int dataSize)
+        {
+            // Allocate some storage if we do not have any yet.
+            if (_Myfirst == null)
             {
+                _Myfirst = (byte*) Marshal.AllocHGlobal(dataSize);
+                _Mylast = _Myfirst;
+                _Myend = _Myfirst + dataSize;
+            }
+
+            // Ensure room for count new elements, grow exponentially.
 
         }
+    }
 
-    public struct Vector<T> : ICollection<T> where T : ICppMarshal
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Vector<T> : IList<T> where T : ICppMarshal
     {
         public Vector Internal;
 
-        public int Count { get; private set; }
+        public int Count
+        {
+            get { return (int)Internal.Size(); }
+        }
+
         public bool IsReadOnly { get; private set; }
 
         public Vector(Vector vector) : this()
@@ -45,7 +98,8 @@ namespace Std
 
         public IEnumerator<T> GetEnumerator()
         {
-            throw new NotImplementedException();
+            var enumerator = new VectorEnumerator<T>(this);
+            return enumerator;
         }
 
         IEnumerator IEnumerable.GetEnumerator()
@@ -55,7 +109,10 @@ namespace Std
 
         public void Add(T item)
         {
-            throw new NotImplementedException();
+            if (!Internal.HasUnusedCapacity())
+                Internal.ReserveNew(1, item.NativeDataSize);
+
+            Internal.Add(item);
         }
 
         public void Clear()
@@ -77,5 +134,84 @@ namespace Std
         {
             throw new NotImplementedException();
         }
+
+        public void Resize(int newSize)
+        {
+            throw new NotImplementedException();
+        }
+
+        public int IndexOf(T item)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void Insert(int index, T item)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void RemoveAt(int index)
+        {
+            throw new NotImplementedException();
+        }
+
+        public T this[int index]
+        {
+            get { throw new NotImplementedException(); }
+            set { throw new NotImplementedException(); }
+        }
+    }
+
+    public static class ListExtensions
+    {
+        public static Std.Vector<T> ToStd<T>(this List<T> list)
+            where T : ICppMarshal
+        {
+            var vec = new Std.Vector<T>();
+            return vec;
+        }
+    }
+
+    public unsafe class VectorEnumerator<T> : IEnumerator<T>
+        where T : ICppMarshal
+    {
+        public Vector<T> Vector;
+        public byte* Position;
+        public int DataSize;
+
+        public VectorEnumerator(Vector<T> vector)
+        {
+            Vector = vector;
+
+            if (Vector.Count > 0)
+                DataSize = Vector[0].NativeDataSize;
+        }
+
+        public void Dispose()
+        {
+        }
+
+        public bool MoveNext()
+        {
+            Position = (byte*)Vector.Internal._Myfirst;
+
+            if (Position == Vector.Internal._Mylast)
+                return false;
+
+            Position += DataSize;
+            return false;
+        }
+
+        public void Reset()
+        {
+            throw new NotImplementedException();
+        }
+
+        public T Current { get; private set; }
+
+        object IEnumerator.Current
+        {
+            get { return Current; }
+        }
     }
 }