private Expression CreateCallSite(int argumentCount, string selector, string nativeName, bool isSuperSend, bool isConstantReceiver, string superLookupScope)
{
MessageSendBinderDefinition binder = new MessageSendBinderDefinition(selector, nativeName, argumentCount, isSuperSend, isConstantReceiver, superLookupScope);
Type delegateType = NativeDynamicCallStrategy.GetCallSiteType(argumentCount);
Type siteType = typeof(CallSite <>).MakeGenericType(delegateType);
return(this.CallSiteGenerator.CreateCallSite(binder, delegateType, siteType, selector));
}
private Expression CompileDynamicCall(Expression callSite, Expression receiver, Expression executionContext, IEnumerable <Expression> arguments)
{
Type delegateType = NativeDynamicCallStrategy.GetCallSiteType(arguments.Count());
Type siteType = typeof(CallSite <>).MakeGenericType(delegateType);
List <Expression> args = new List <Expression>();
args.Add(callSite);
args.Add(receiver);
args.Add(executionContext);
args.AddRange(arguments);
FieldInfo target = TypeUtilities.Field(siteType, "Target", BindingFlags.Instance | BindingFlags.Public);
MethodInfo invoke = TypeUtilities.Method(delegateType, "Invoke");
ParameterInfo[] pis = invoke.GetParameters();
// siteExpr.Target.Invoke(siteExpr, *args)
return(Expression.Call(
Expression.Field(callSite, target),
invoke,
args));
/* C# Style
* ParameterExpression site = Expression.Variable(siteType, "$site");
* List<Expression> args = new List<Expression>();
* args.Add(site);
* args.Add(receiver);
* args.Add(executionContext);
* args.AddRange(arguments);
*
* FieldInfo target = TypeUtilities.Field(siteType, "Target", BindingFlags.Instance | BindingFlags.Public);
* MethodInfo invoke = TypeUtilities.Method(delegateType, "Invoke");
* ParameterInfo[] pis = invoke.GetParameters();
* // ($site = siteExpr).Target.Invoke($site, *args)
* return Expression.Block(
* new[] { site },
* Expression.Call(
* Expression.Field(Expression.Assign(site, callSite), target),
* invoke,
* args));
*/
}
