/// <summary>
/// 返回的Task(Of T)的T类型描述
/// </summary>
/// <param name="dataType">数据类型</param>
/// <exception cref="ArgumentNullException"></exception>
public DataTypeDescriptor(Type dataType)
{
this.Type = dataType ?? throw new ArgumentNullException(nameof(dataType));
var taskType = typeof(ApiTask <>).MakeGenericType(dataType);
this.ITaskFactory = Lambda.CreateNewFunc <ITask>(taskType);
this.ITaskConstructor = taskType.GetConstructor(emptyTypes);
this.IsString = dataType == typeof(string);
this.IsStream = dataType == typeof(Stream);
this.IsByteArray = dataType == typeof(byte[]);
this.IsHttpResponseMessage = dataType == typeof(HttpResponseMessage);
this.IsHttpResponseWrapper = dataType.IsInheritFrom <HttpResponseWrapper>();
}
