DTCallbackScopedVars.c


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#strict 2

static const ScopedVar_Callback = 4;

global func CallbackVar(callback) { return [ScopedVar_Callback, callback]; }

global func &CustomScopedVar(array variable)
{
	if(variable[0] == ScopedVar_Callback)
	{
		return CallA(variable[1], []);
	}
	else
	{
		return _inherited(variable, ...);
	}
}

static const BindCallback_Bind_ScopedVar = -6;

global func Bind_Var(array scopedVar) { return [BindCallback_Bind_ScopedVar, scopedVar]; }

global func BindCustomArgs(array bind, array args, bool safe)
{
	if(bind[0] == BindCallback_Bind_ScopedVar)
	{
		return ScopedVar(bind[1]);
	}
	else
	{
		return _inherited(bind, args, safe, ...);
	}
}

global func CheckCustomScopedVar(array variable)
{
	if(GetType(variable) == C4V_Array && variable[0] == ScopedVar_Callback && GetLength(variable) == 2)
	{
		if(CheckCallback(variable[1]))
		{
			return true;
		}
	}

	return _inherited(variable, ...);
}

global func CheckBindCallbackCustomBinding(binding)
{
	if(GetType(binding) == C4V_Array && GetLength(binding) == 2 && binding[0] == BindCallback_Bind_ScopedVar && CheckScopedVar(binding[1]))
	{
		return true;
	}
	return _inherited(binding, ...);
}