/// <summary>
/// Invoke an Extension method that is void.
/// </summary>
/// <param name="extMethodInfo"></param>
/// <param name="extMethodParams"></param>
public void Invoke(IExtMethodInfo extMethodInfo, params object[] extMethodParams)
{
if (string.IsNullOrWhiteSpace(extMethodInfo.MethodName))
{
throw new ArgumentException($"{nameof(extMethodInfo.MethodName)} is empty");
}
if (extMethodParams.Length < 1)
{
throw new TargetParameterCountException($"Invoke Extension method {extMethodInfo.MethodName}() must provide at least the extended type parameter!");
}
if (extMethodInfo.ExtendedType == null)
{
Invoke(extMethodInfo.MethodName, extMethodParams);
return;
}
var targetExtMethods = ExtensionLibAssembly.GetExtensionMethods(extMethodInfo);
var methodInfos = targetExtMethods as MethodInfo[] ?? targetExtMethods.ToArray();
if (!methodInfos.Any())
{
throw new MissingMethodException(extMethodInfo.MethodName);
}
methodInfos.First().Invoke(null, extMethodParams);
}
/// <summary>
/// Invoke an Extension method that has return type.
/// </summary>
/// <typeparam name="TReturn">The return type of extension method.</typeparam>
/// <param name="extMethodInfo">The <see cref="IExtMethodInfo"/> object contains target extension method information.</param>
/// <param name="extMethodParams">Parameters that needs to invoke the extension method.</param>
/// <returns></returns>
public TReturn Invoke <TReturn>(IExtMethodInfo extMethodInfo, params object[] extMethodParams)
{
if (string.IsNullOrWhiteSpace(extMethodInfo.MethodName))
{
throw new ArgumentException($"{nameof(extMethodInfo.MethodName)} is empty");
}
if (extMethodParams.Length < 1)
{
throw new TargetParameterCountException($"Invoke Extension method {extMethodInfo.MethodName}() must provide at least the extended type parameter!");
}
if (extMethodInfo.ExtendedType == null)
{
return(Invoke <TReturn>(extMethodInfo.MethodName, extMethodParams));
}
var targetExtMethods = ExtensionLibAssembly.GetExtensionMethods(extMethodInfo);
var methodInfos = targetExtMethods as MethodInfo[] ?? targetExtMethods.ToArray();
if (!methodInfos.Any())
{
throw new MissingMethodException(extMethodInfo.MethodName);
}
object invokeResult = null;
Exception notMatchRunEx = null;
foreach (var methodInfo in methodInfos.Where(x => x.GetParameters().Length == extMethodParams.Length))
{
try
{
invokeResult = methodInfo.Invoke(null, extMethodParams);
notMatchRunEx = null;
break;
}
catch (ArgumentException ex)
{
notMatchRunEx = ex;
}
catch (TargetInvocationException ex)
{
if (ex.InnerException != null)
{
throw ex.InnerException;
}
throw;
}
}
if (notMatchRunEx != null)
{
throw notMatchRunEx;
}
if (invokeResult == null)
{
return(default);
public static IEnumerable <MethodInfo> GetExtensionMethods(this Assembly assembly, IExtMethodInfo extMethodInfo)
{
return(GetExtensionMethods(assembly, extMethodInfo.ExtendedType, extMethodInfo.MethodName));
}
