/// <summary>
/// Initializes a new instance of <see cref="WampRequestMapper{TMessage}"/>
/// </summary>
/// <param name="type">The type to map WAMP requests its methods.</param>
/// <param name="formatter">A <see cref="IWampFormatter{TMessage}"/> used
/// to check if a parameter can be binded to given type.</param>
public WampRequestMapper(Type type, IWampFormatter <TMessage> formatter)
{
mFormatter = formatter;
mMapping = BuildMapping(type);
mMissingMethod = FindMissingMethod(type);
}
private Func <object, object[], object> BuildAction(WampMethodInfo wampMethod)
{
Func <object, object[], object> method =
MethodInvokeGenerator.CreateInvokeMethod(wampMethod.Method);
return(method);
}
private bool CanBind(WampMethodInfo wampMethodInfo, TMessage[] arguments)
{
return(wampMethodInfo.Method.GetParameters()
.Where(x => !x.IsDefined(typeof(WampProxyParameterAttribute), true))
.Zip(arguments, (parameterInfo, argument) => new { parameterInfo, argument })
.All(x => mFormatter.CanConvert(x.argument, x.parameterInfo.ParameterType)));
}
private object[] ConvertArguments(WampMessage <TMessage> message, WampMethodInfo method)
{
ParameterInfo[] parametersList = method.ParametersToConvert;
TMessage[] arguments = message.Arguments;
IEnumerable <TMessage> relevantArguments = arguments;
if (method.HasParamsArgument)
{
relevantArguments = relevantArguments.Take(parametersList.Length - 1);
}
List <object> converted =
parametersList.Zip(relevantArguments,
(parameter, argument) =>
DeserializeArgument(parameter, argument))
.ToList();
if (method.HasParamsArgument)
{
IEnumerable <TMessage> otherArgumets =
arguments.Skip(parametersList.Length - 1);
converted.Add(otherArgumets.ToArray());
}
return(converted.ToArray());
}
public Action <TClient, WampMessage <TMessage> > BuildMethod(WampMethodInfo wampMethod)
{
Func <object, object[], object> action = BuildAction(wampMethod);
return((client, message) =>
{
object[] arguments = GetArguments(client, message, wampMethod);
object instance = GetInstance(client, message, wampMethod);
action(instance, arguments);
});
}
private object[] InnerGetArguments(TClient client, WampMessage <TMessage> message, WampMethodInfo method)
{
List <object> methodArguments = new List <object>(method.TotalArgumentsCount);
if (method.HasWampClientArgument)
{
methodArguments.Add(client);
}
if (method.IsRawMethod)
{
methodArguments.Add(message);
}
else
{
methodArguments.AddRange
(ConvertArguments(message, method));
}
return(methodArguments.ToArray());
}
protected virtual object[] GetArguments(TClient client, WampMessage <TMessage> message, WampMethodInfo method)
{
return(InnerGetArguments(client, message, method));
}
// Maybe these should be in a seperated interface.
protected virtual object GetInstance(TClient client, WampMessage <TMessage> message, WampMethodInfo method)
{
return(mInstance);
}