Imported Upstream version 4.2.0.179

Former-commit-id: 0a113cb3a6feb7873f632839b1307cc6033cd595

mcs/class/corlib/ReferenceSources/MethodBase.cs

@@ -0,0 +1,63 @@
+#if !FULL_AOT_RUNTIME
+using System.Reflection.Emit;
+#endif
+
+using System.Runtime.CompilerServices;
+
+namespace System.Reflection
+{
+	partial class MethodBase
+	{
+		//
+		// This is a quick version for our own use. We should override
+		// it where possible so that it does not allocate an array.
+		// They cannot be abstract otherwise we break public contract
+		//
+		internal virtual ParameterInfo[] GetParametersInternal ()
+		{
+			// Override me
+			return GetParameters ();
+		}
+
+		internal virtual int GetParametersCount ()
+		{
+			// Override me
+			return GetParametersInternal ().Length;
+		}
+
+		internal virtual Type GetParameterType (int pos)
+		{
+			throw new NotImplementedException ();
+		}
+
+		internal virtual int get_next_table_index (object obj, int table, bool inc) {
+#if !FULL_AOT_RUNTIME
+			if (this is MethodBuilder) {
+				MethodBuilder mb = (MethodBuilder)this;
+				return mb.get_next_table_index (obj, table, inc);
+			}
+			if (this is ConstructorBuilder) {
+				ConstructorBuilder mb = (ConstructorBuilder)this;
+				return mb.get_next_table_index (obj, table, inc);
+			}
+#endif
+			throw new Exception ("Method is not a builder method");
+		}
+
+		internal static MethodBase GetMethodFromHandleNoGenericCheck (RuntimeMethodHandle handle)
+		{
+			return GetMethodFromHandleInternalType (handle.Value, IntPtr.Zero);
+		}
+
+		[MethodImplAttribute (MethodImplOptions.InternalCall)]
+		internal extern static MethodBody GetMethodBodyInternal (IntPtr handle);
+
+		internal static MethodBody GetMethodBody (IntPtr handle) 
+		{
+			return GetMethodBodyInternal (handle);
+		}
+
+		[MethodImplAttribute (MethodImplOptions.InternalCall)]
+		extern static MethodBase GetMethodFromHandleInternalType (IntPtr method_handle, IntPtr type_handle);		
+	}
+}