private IEnumerable <string> GenerateEvent(short methodID, System.Reflection.EventInfo eventInfo)
{
var privateEvent = $"_{eventInfo.Name}";
var codeLines = new List <string>();
codeLines.Add($"private event EventHandler<{eventInfo.ArgsTypeName()}> {privateEvent};");
codeLines.Add($"public event EventHandler<{eventInfo.ArgsTypeName()}> {eventInfo.Name}");
codeLines.Add("{");
codeLines.Add("add{");
codeLines.Add($"Add_{eventInfo.Name}();");
codeLines.Add($"{privateEvent} += value;");
codeLines.Add("}");
codeLines.Add("remove{");
codeLines.Add($"Remove_{eventInfo.Name}();");
codeLines.Add($"{privateEvent} -= value;");
codeLines.Add("}");
codeLines.Add("}");
codeLines.Add($"private void Add_{eventInfo.Name}()");
codeLines.Add("{");
codeLines.Add($"if ({privateEvent} != null) return;");
if (OutputDebug)
{
var msg = $"proxy: add_event {eventInfo.Name} id={methodID}";
codeLines.Add($"System.Console.WriteLine(\"{msg}\");");
}
codeLines.Add("using var stream = new MemoryStream();");
codeLines.Add($"_proxyItem.SendCallRequest({methodID}, stream.ToArray());");
codeLines.Add("}");
codeLines.Add($"private void Remove_{eventInfo.Name}()");
codeLines.Add("{");
codeLines.Add($"if ({privateEvent} == null) return;");
if (OutputDebug)
{
var msg = $"proxy: remove_event {eventInfo.Name} id={methodID}";
codeLines.Add($"System.Console.WriteLine(\"{msg}\");");
}
codeLines.Add("try {");
codeLines.Add("using var stream = new MemoryStream();");
codeLines.Add($"_proxyItem.SendCallRequest({methodID + 1}, stream.ToArray());");
codeLines.Add("} catch {}"); //all exceptions need be caught here
codeLines.Add("}");
codeLines.Add($"private void Fire_{eventInfo.Name}(Stream dataStream)");
codeLines.Add("{");
if (OutputDebug)
{
var msg = $"proxy: on_event {eventInfo.Name} id={methodID}";
codeLines.Add($"System.Console.WriteLine(\"{msg}\");");
}
codeLines.Add("var serializer = new Serializer(dataStream);");
var argType = eventInfo.EventHandlerType.GenericTypeArguments[0];
codeLines.Add($"var args = {SerializeStatement.DeserializeObject(argType)}");
codeLines.Add($"var handler = {privateEvent};");
codeLines.Add($"if (handler != null) handler(this, args);");
codeLines.Add("}");
return(codeLines);
}
private IEnumerable <string> GenerateMethod(short methodID, System.Reflection.MethodInfo method)
{
if (method.IsIndexer())
{
throw new NotSupportedException("Indexer unsupported, use setter/getter instead");
}
var codeLines = new List <string>();
if (method.IsSynchronized())
{
codeLines.Add($"public {method.ReturnName()} {method.Name}(");
}
else
{
codeLines.Add($"public async {method.ReturnName()} {method.Name}(");
}
var isFirstParam = true;
foreach (var p in method.GetParameters())
{
var paramDeclare = $"{p.ParameterType.CompilableClassName()} {p.Name}";
if (!isFirstParam)
{
codeLines.Add($", {paramDeclare}");
}
else
{
codeLines.Add(paramDeclare);
}
isFirstParam = false;
}
codeLines.Add("){");
if (OutputDebug)
{
var msg = $"proxy: call {method.Name} id={methodID}";
codeLines.Add($"System.Console.WriteLine(\"{msg}\");");
}
codeLines.Add("var stream = new MemoryStream();");
codeLines.Add("var serializer = new Serializer(stream);");
foreach (var p in method.GetParameters())
{
if (p.ParameterType.IsInterface)
{
codeLines.Add($"if ({p.Name} == null)");
codeLines.Add("{");
codeLines.Add("serializer.Serialize<Int16>(-1);");
codeLines.Add("} else {");
codeLines.Add($"var objectID = _proxyItem.CacheService({p.Name});");
codeLines.Add("serializer.Serialize<Int16>(objectID);");
codeLines.Add("}");
}
else
{
codeLines.Add(SerializeStatement.SerializeObject(p.ParameterType, p.Name));
}
}
codeLines.Add("stream.Seek(0, SeekOrigin.Begin);");
if (method.IsSynchronized())
{
codeLines.Add($"var response = _proxyItem.SendCallRequest({methodID}, stream.ToArray());");
}
else
{
codeLines.Add($"var response = await _proxyItem.SendCallRequestAsync({methodID}, stream.ToArray());");
}
if (!method.ReturnType.IsVoid() && !method.ReturnType.IsTask())
{
codeLines.Add("serializer = new Serializer(response);");
if (method.ReturnType.IsGenericTask())
{
var returnType = method.ReturnType.GetGenericArguments()[0];
codeLines.Add($"return {SerializeStatement.DeserializeObject(returnType)}");
}
else if (method.ReturnType.IsInterface)
{
codeLines.Add("var returnObjectID = serializer.Deserialize<Int16>();");
var nonNull = $"_proxyItem.CacheProxy<{method.ReturnType.CompilableClassName()}>(returnObjectID)";
codeLines.Add($"return returnObjectID >= 0 ? {nonNull} : null;");
}
else
{
var returnType = method.ReturnType;
codeLines.Add($"return {SerializeStatement.DeserializeObject(returnType)}");
}
}
codeLines.Add("}");
return(codeLines);
}
private IEnumerable <string> GenerateMethodCall(MethodInfo method, Int16 methodID)
{
if (method.IsIndexer())
{
throw new NotSupportedException("Indexer unsupported, use setter/getter instead");
}
var codeLines = new List <string>();
//the method signature
if (method.IsSynchronized())
{
codeLines.Add($"private Task {GeneratedMethodCallName(method, methodID)}(Stream dataStream, MemoryStream resultStream)");
}
else
{
codeLines.Add($"private async Task {GeneratedMethodCallName(method, methodID)}(Stream dataStream, MemoryStream resultStream)");
}
codeLines.Add("{");
if (OutputDebug)
{
var msg = $"stub: call {method.Name} id={methodID}";
codeLines.Add($"System.Console.WriteLine(\"{msg}\");");
}
//deserialize the parameters
codeLines.Add("var serializer = new Serializer(dataStream);");
foreach (var p in method.GetParameters())
{
if (p.ParameterType.IsInterface)
{
var id_name = $"{p.Name}_objectID";
codeLines.Add($"var {id_name} = serializer.Deserialize<Int16>();");
var nonNull = $"_serviceItem.CacheProxy<{p.ParameterType.CompilableClassName()}>({id_name})";
codeLines.Add($"{p.ParameterType.CompilableClassName()} {p.Name} = {id_name} < 0 ? null : {nonNull} ;");
}
else
{
codeLines.Add($"var {p.Name} = {SerializeStatement.DeserializeObject(p.ParameterType)}");
}
}
//call the service object
if (method.ReturnType.IsVoid())
{
codeLines.Add($"_service.{method.Name}(");
}
else if (method.ReturnType.IsTask())
{
codeLines.Add($"await _service.{method.Name}(");
}
else if (method.ReturnType.IsGenericTask())
{
codeLines.Add($"var result = await _service.{method.Name}(");
}
else
{
codeLines.Add($"var result = _service.{method.Name}(");
}
//pass the parameters
var isFirstParam = true;
foreach (var p in method.GetParameters())
{
if (isFirstParam)
{
isFirstParam = false;
}
else
{
codeLines.Add(", ");
}
codeLines.Add($"{p.Name}:{p.Name}");
}
codeLines.Add(");");
//serialize the returns to result stream
if (!method.ReturnType.IsVoid() && !method.ReturnType.IsTask())
{
codeLines.Add("serializer = new Serializer(resultStream);");
var resultType = method.ReturnType;
if (method.ReturnType.IsInterface)
{
codeLines.Add("if (result == null) {");
codeLines.Add("serializer.Serialize<Int16>(-1);");
codeLines.Add("} else {");
codeLines.Add($"var resultObjectID = _serviceItem.CacheService<{method.ReturnType.CompilableClassName()}>(result);");
codeLines.Add("serializer.Serialize<Int16>(resultObjectID);");
codeLines.Add("}");
}
else
{
if (method.ReturnType.IsGenericTask())
{
resultType = resultType.GetGenericArguments()[0];
}
codeLines.Add(SerializeStatement.SerializeObject(resultType, "result"));
}
}
if (method.IsSynchronized())
{
codeLines.Add("return Task.CompletedTask;");
}
codeLines.Add("}");
return(codeLines);
}