1 files changed, 84 insertions, 0 deletions
diff --git a/Runtime/Export/AttributeHelperEngine.cs b/Runtime/Export/AttributeHelperEngine.cs
new file mode 100644
index 0000000..d8188e0
--- /dev/null
+++ b/Runtime/Export/AttributeHelperEngine.cs
@@ -0,0 +1,84 @@
+using UnityEngine;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+
+namespace AOT
+{
+	// Mono AOT compiler detects this attribute by name and generates required wrappers for 
+	// native->managed callbacks. Works only for static methods.
+	[System.AttributeUsage(System.AttributeTargets.Method)]
+	public class MonoPInvokeCallbackAttribute : Attribute
+	{
+		public MonoPInvokeCallbackAttribute (Type type) {}
+	}
+}
+
+namespace UnityEngine
+{
+
+internal class WrapperlessIcall : System.Attribute {
+	public WrapperlessIcall () {
+	}
+}
+
+class AttributeHelperEngine
+{
+	static Type[] GetRequiredComponents (Type klass)
+	{
+		// Generate an array for all required components
+		// .NET doesnt give us multiple copies of the same attribute on derived classes
+		// Thus we do it manually
+		List<Type> required = null;
+		while (klass != null && klass != typeof (MonoBehaviour))
+		{
+			object[] attrs = klass.GetCustomAttributes(typeof(RequireComponent), false);
+			
+			
+			for (int i=0;i<attrs.Length;i++)
+			{
+				RequireComponent attri = (RequireComponent)attrs[i];
+				if (required == null && attrs.Length == 1 && klass.BaseType == typeof (MonoBehaviour))
+				{
+					Type[] types = { attri.m_Type0, attri.m_Type1, attri.m_Type2 };
+					return types;
+				}
+				else
+				{
+					if (required == null)
+						required = new List<Type>();
+						
+					if (attri.m_Type0 != null)
+						required.Add(attri.m_Type0);
+					if (attri.m_Type1 != null)
+						required.Add(attri.m_Type1);
+					if (attri.m_Type2 != null)
+						required.Add(attri.m_Type2);
+				}
+			}
+			
+			klass = klass.BaseType;
+		}
+		if (required == null)
+			return null;
+		else
+			return required.ToArray();
+	}
+			
+	static bool CheckIsEditorScript (Type klass)
+	{
+		while (klass != null && klass != typeof (MonoBehaviour))
+		{
+			object[] attrs = klass.GetCustomAttributes(typeof(ExecuteInEditMode), false);
+			if (attrs.Length != 0)
+				return true;
+			klass = klass.BaseType;
+		}
+		return false;
+	}
+}
+}
+\ No newline at end of file