private ByteQue Except(string msg)
{
ByteQue que = new ByteQue();
que.Push(msg);
return(que);
}
/// <summary>
/// call the method serialized into a queue
/// </summary>
/// <param name="name">the name of the calling method</param>
/// <param name="args">calling method parameters</param>
/// <returns>the result of calling the method</returns>
public static ByteQue Make(string name, params object[] args)
{
ByteQue que = new ByteQue();
byte[] arr = Encoding.UTF8.GetBytes((string)name);
que.PushSize(arr.Length);
foreach (byte ch in arr)
{
que.Push(ch);
}
foreach (object arg in args)
{
que.Push(arg.GetType(), arg);
}
return(que);
}
/// <summary>
/// call the registered method
/// </summary>
/// <param name="que">the queue generated by fun</param>
/// <returns>serialize error messages or call results into a queue</returns>
public ByteQue Invoke(ByteQue que)
{
byte[] arr = new byte[que.PopSize()];
for (int i = 0; i < arr.Length; ++i)
{
arr[i] = que.Pop <byte>();
}
string name = Encoding.UTF8.GetString(arr);
if (!funs.ContainsKey(name))
{
return(Except(name + " function not found"));
}
ObjectMethod om = funs[name];
ParameterInfo[] types = om.fun.GetParameters();
object[] args = new object[types.Length];
for (int i = 0; i < types.Length; ++i)
{
Type type = types[i].ParameterType;
if (que.Len == 0)
{
return(Except("error when calling function " + name + " to restore parameters to the " + i + "th parameter " + type.ToString()));
}
try
{
args[i] = que.Pop(type);
}
catch (Exception e)
{
return(Except("error when calling function " + name + " to restore parameters to the " + i + "th parameter " + type.ToString() + ": " + e.ToString()));
}
}
if (que.Len != 0)
{
return(Except("error when calling function " + name + " to restore parameters"));
}
ByteQue ret = new ByteQue();
object rst;
try
{
rst = om.fun.Invoke(om.obj, args);
}
catch (Exception e)
{
return(Except("error calling function " + name + " " + e.ToString()));
}
ret.Push(false);
Type rtp = om.fun.ReturnType;
if (rtp != typeof(void))
{
try
{
ret.Push(rtp, rst);
}
catch (Exception e)
{
return(Except("error calling function " + name + " to store result " + e.ToString()));
}
}
return(ret);
}