//------------------------------------------------------------------------------
// <copyright file="TypeExtensions.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
 
namespace System.Xml.Serialization {
    using System.Reflection;
 
    internal static class TypeExtensions {
        const string ImplicitCastOperatorName = "op_Implicit";
 
        public static bool TryConvertTo(this Type targetType, object data, out object returnValue) {
            if (targetType == null) {
                throw new ArgumentNullException("targetType");
            }
 
            returnValue = null;
 
            if (data == null) {
                return !targetType.IsValueType;
            }
 
            Type sourceType = data.GetType();
 
            if (targetType == sourceType ||
                targetType.IsAssignableFrom(sourceType)) {
                returnValue = data;
                return true;
            }
 
            MethodInfo[] methods = targetType.GetMethods(BindingFlags.Static | BindingFlags.Public);
 
            foreach (MethodInfo method in methods) {
                if (method.Name == ImplicitCastOperatorName &&
                    method.ReturnType != null &&
                    targetType.IsAssignableFrom(method.ReturnType)) {
                    ParameterInfo[] parameters = method.GetParameters();
 
                    if (parameters != null &&
                        parameters.Length == 1 &&
                        parameters[0].ParameterType.IsAssignableFrom(sourceType)) {
                        returnValue = method.Invoke(null, new object[] { data });
                        return true;
                    }
                }
            }
 
            return false;
        }
    }
}