internal static DLR.Expression BuildPresetCallbackCall(AplusScope scope, DLR.ParameterExpression valueParam)
{
DLR.ParameterExpression callbackParameter = DLR.Expression.Parameter(typeof(CallbackItem), "__CALLBACK__");
DLR.Expression callback = DLR.Expression.Block(
new DLR.ParameterExpression[] { callbackParameter },
DLR.Expression.Condition(
DLR.Expression.Call(
scope.GetRuntimeExpression().Property("CallbackManager"),
typeof(CallbackManager).GetMethod("TryGetPresetCallback"),
scope.CallbackInfo.QualifiedName,
callbackParameter
),
DLR.Expression.Dynamic(
// TODO: do not instantiate the binder here
new Runtime.Binder.CallbackBinder(),
typeof(object),
callbackParameter,
scope.GetRuntimeExpression(),
valueParam,
scope.CallbackInfo.Index,
scope.CallbackInfo.Path
).To<AType>(),
(DLR.Expression)valueParam.To<AType>()
)
);
return callback;
}
