Add Array and Dictionary wrapper classes to C#

(cherry picked from commit ee3c476c9a)

modules/mono/glue/cs_files/Array.cs

@@ -0,0 +1,335 @@
+using System;
+using System.Collections.Generic;
+using System.Collections;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace Godot
+{
+    class ArraySafeHandle : SafeHandle
+    {
+        public ArraySafeHandle(IntPtr handle) : base(IntPtr.Zero, true)
+        {
+            this.handle = handle;
+        }
+
+        public override bool IsInvalid
+        {
+            get
+            {
+                return handle == IntPtr.Zero;
+            }
+        }
+
+        protected override bool ReleaseHandle()
+        {
+            Array.godot_icall_Array_Dtor(handle);
+            return true;
+        }
+    }
+
+    public class Array : IList<object>, ICollection<object>, IEnumerable<object>, IDisposable
+    {
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static IntPtr godot_icall_Array_Ctor();
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Dtor(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static object godot_icall_Array_At(IntPtr ptr, int index);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_SetAt(IntPtr ptr, int index, object value);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_Array_Count(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Add(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Clear(IntPtr ptr);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Array_Contains(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_CopyTo(IntPtr ptr, object[] array, int arrayIndex);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static int godot_icall_Array_IndexOf(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_Insert(IntPtr ptr, int index, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static bool godot_icall_Array_Remove(IntPtr ptr, object item);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern static void godot_icall_Array_RemoveAt(IntPtr ptr, int index);
+
+        ArraySafeHandle safeHandle;
+        bool disposed = false;
+
+        public Array()
+        {
+            safeHandle = new ArraySafeHandle(godot_icall_Array_Ctor());
+        }
+
+        internal Array(ArraySafeHandle handle)
+        {
+            safeHandle = handle;
+        }
+
+        internal Array(IntPtr handle)
+        {
+            safeHandle = new ArraySafeHandle(handle);
+        }
+
+        internal IntPtr GetPtr()
+        {
+            return safeHandle.DangerousGetHandle();
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposed)
+                return;
+
+            if (safeHandle != null)
+            {
+                safeHandle.Dispose();
+                safeHandle = null;
+            }
+
+            disposed = true;
+        }
+
+        public object this[int index]
+        {
+            get
+            {
+                return godot_icall_Array_At(GetPtr(), index);
+            }
+            set
+            {
+                godot_icall_Array_SetAt(GetPtr(), index, value);
+            }
+        }
+
+        public int Count
+        {
+            get
+            {
+                return godot_icall_Array_Count(GetPtr());
+            }
+        }
+
+        public bool IsReadOnly
+        {
+            get
+            {
+                return false;
+            }
+        }
+
+        public void Add(object item)
+        {
+            godot_icall_Array_Add(GetPtr(), item);
+        }
+
+        public void Clear()
+        {
+            godot_icall_Array_Clear(GetPtr());
+        }
+
+        public bool Contains(object item)
+        {
+            return godot_icall_Array_Contains(GetPtr(), item);
+        }
+
+        public void CopyTo(object[] array, int arrayIndex)
+        {
+            if (array == null)
+                throw new ArgumentNullException(nameof(array), "Value cannot be null.");
+
+            if (arrayIndex < 0)
+                throw new ArgumentOutOfRangeException(nameof(arrayIndex), "Number was less than the array's lower bound in the first dimension.");
+
+            // Internal call may throw ArgumentException
+            godot_icall_Array_CopyTo(GetPtr(), array, arrayIndex);
+        }
+
+        public IEnumerator<object> GetEnumerator()
+        {
+            int count = Count;
+
+            for (int i = 0; i < count; i++)
+            {
+                yield return godot_icall_Array_At(GetPtr(), i);
+            }
+        }
+
+        public int IndexOf(object item)
+        {
+            return godot_icall_Array_IndexOf(GetPtr(), item);
+        }
+
+        public void Insert(int index, object item)
+        {
+            godot_icall_Array_Insert(GetPtr(), index, item);
+        }
+
+        public bool Remove(object item)
+        {
+            return godot_icall_Array_Remove(GetPtr(), item);
+        }
+
+        public void RemoveAt(int index)
+        {
+            godot_icall_Array_RemoveAt(GetPtr(), index);
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+    }
+
+    public class Array<T> : IList<T>, ICollection<T>, IEnumerable<T>
+    {
+        Array objectArray;
+
+        public Array()
+        {
+            objectArray = new Array();
+        }
+
+        public Array(Array array)
+        {
+            objectArray = array;
+        }
+
+        internal Array(IntPtr handle)
+        {
+            objectArray = new Array(handle);
+        }
+
+        internal Array(ArraySafeHandle handle)
+        {
+            objectArray = new Array(handle);
+        }
+
+        public static explicit operator Array(Array<T> from)
+        {
+            return from.objectArray;
+        }
+
+        public T this[int index]
+        {
+            get
+            {
+                return (T)objectArray[index];
+            }
+            set
+            {
+                objectArray[index] = value;
+            }
+        }
+
+        public int Count
+        {
+            get
+            {
+                return objectArray.Count;
+            }
+        }
+
+        public bool IsReadOnly
+        {
+            get
+            {
+                return objectArray.IsReadOnly;
+            }
+        }
+
+        public void Add(T item)
+        {
+            objectArray.Add(item);
+        }
+
+        public void Clear()
+        {
+            objectArray.Clear();
+        }
+
+        public bool Contains(T item)
+        {
+            return objectArray.Contains(item);
+        }
+
+        public void CopyTo(T[] array, int arrayIndex)
+        {
+            if (array == null)
+                throw new ArgumentNullException(nameof(array), "Value cannot be null.");
+
+            if (arrayIndex < 0)
+                throw new ArgumentOutOfRangeException(nameof(arrayIndex), "Number was less than the array's lower bound in the first dimension.");
+
+            // TODO This may be quite slow because every element access is an internal call.
+            // It could be moved entirely to an internal call if we find out how to do the cast there.
+
+            int count = objectArray.Count;
+
+            if (array.Length < (arrayIndex + count))
+                throw new ArgumentException("Destination array was not long enough. Check destIndex and length, and the array's lower bounds.");
+
+            for (int i = 0; i < count; i++)
+            {
+                array[arrayIndex] = (T)objectArray[i];
+                arrayIndex++;
+            }
+        }
+
+        public IEnumerator<T> GetEnumerator()
+        {
+            int count = objectArray.Count;
+
+            for (int i = 0; i < count; i++)
+            {
+                yield return (T)objectArray[i];
+            }
+        }
+
+        public int IndexOf(T item)
+        {
+            return objectArray.IndexOf(item);
+        }
+
+        public void Insert(int index, T item)
+        {
+            objectArray.Insert(index, item);
+        }
+
+        public bool Remove(T item)
+        {
+            return objectArray.Remove(item);
+        }
+
+        public void RemoveAt(int index)
+        {
+            objectArray.RemoveAt(index);
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+    }
+}