string InvokeMethod(PostRequest pr)
{
var type = this.GetType();
var mi = type.GetMethod(pr.MethodName, BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.Public);
if (mi == null || mi.GetCustomAttributes(typeof(AjaxMethodAttribute), true).Length == 0)
return "{\"error\": \"Method not found.\"}";
try
{
var pis = mi.GetParameters();
var args = new List<object>();
if (pr.Arguments.Count != pis.Length)
return "{\"error\": \"Parameter count mismatch.\"}";
for (int i = 0; i < pis.Length; i++)
{
var pi = pis[i];
var arg = pr.Arguments[i];
var converter = TypeDescriptor.GetConverter(pi.ParameterType);
if (converter != null)
args.Add(converter.ConvertFromString(arg));
else
args.Add(arg);
}
object ret = mi.Invoke(this, args.ToArray());
return string.Format("{{ \"result\": {0} }}", Utils.ConvertToJson(ret));
}
catch (Exception e)
{
var ret = new Dictionary<string, object>();
ret["error"] = e.Message;
ret["stackTrace"] = e.StackTrace;
return Utils.ConvertToJson(ret);
}
}
PostRequest ParsePostData(string postData)
{
int pos = 0;
if (!ReadDelimiter(postData, '{', ref pos))
return null;
PostRequest request = new PostRequest();
while (pos < postData.Length)
{
string key = ReadString(postData, ref pos);
if (!ReadDelimiter(postData, ':', ref pos))
break;
object value = ReadValue(postData, ref pos);
if (key == "method")
request.MethodName = value as string;
else if (key == "arguments")
request.Arguments.AddRange(value as List<string>);
ReadDelimiter(postData, ',', ref pos);
if (pos < postData.Length && postData[pos] == '}')
break;
}
return request;
}