public CommandParameterDescriptor(ParameterInfo parameterInfo)
: base(new CommandPropertyRequiredAttribute(), parameterInfo.Name)
{
this.value = parameterInfo.DefaultValue;
this.Summary = parameterInfo.GetSummary();
this.Description = parameterInfo.GetDescription();
this.DefaultValue = parameterInfo.DefaultValue;
this.MemberType = parameterInfo.ParameterType;
this.completionAttribute = parameterInfo.GetCustomAttribute <CommandCompletionAttribute>();
}
protected string[] GetCompletion(object instance, string find, CommandCompletionAttribute attribute)
{
if (attribute is null)
{
throw new ArgumentNullException(nameof(attribute));
}
var methodName = attribute.MethodName;
var type = attribute.Type ?? instance.GetType();
var obj = attribute.Type != null ? null : instance;
var flag = attribute.Type != null ? BindingFlags.Static : BindingFlags.Instance;
var asyncWaitTime = attribute.AsyncWaitTime;
var method = type.GetMethod(methodName, BindingFlags.Public | BindingFlags.NonPublic | flag, null, new Type[] { }, null);
try
{
var arrayType = this.MemberType.MakeArrayType();
var value = method.Invoke(obj, null);
if (value != null && value.GetType() == arrayType)
{
var @array = value as Array;
var itemList = new List <string>(@array.Length);
foreach (var item in @array)
{
itemList.Add($"{item}");
}
return(itemList.ToArray());
}
else if (value is string[] items)
{
return(items);
}
else if (value is Task <string[]> task)
{
if (task.Wait(asyncWaitTime) == false)
{
return(null);
}
return(task.Result);
}
throw new NotImplementedException();
}
catch (Exception e)
{
Trace.TraceError($"{e}");
return(null);
}
}