public static GearsNativeWrapper GetWrapper(Type type)
{
if (_Wrappers.TryGetValue(type, out GearsNativeWrapper wrapper))
{
return(wrapper);
}
try {
wrapper = new GearsNativeWrapper(type);
}
catch (Exception e) {
throw new GearsRuntimeException($"GearsNativeWrapper.GetWrapper: Could not wrap object of type {type.Name}. Inner error: {e.Message}");
}
_Wrappers[type] = wrapper;
return(wrapper);
}
internal bool CallGearsFunction(ulong name, out object returned, params object[] args)
{
if (!Globals.TryGet(name, out GearsValue fnValue) || !fnValue.IsObjPtr)
{
// error: no function with that name.
returned = $"Error: no function with name '{BitString.GetBitStr(name)}'.";
return(false);
}
GearsObj fnObject = fnValue.AsObject(this);
if (fnObject is GearsObjFunction fnFunction)
{
if (fnFunction.Arity != args.Length)
{
// error: wrong arity.
returned = $"Error: called '{BitString.GetBitStr(name)}' with wrong arity (passed arity is '{args?.Length ?? 0}').";
return(false);
}
}
Push(fnValue);
for (int i = 0; i < (args?.Length ?? 0); i++)
{
object arg = args[i];
Type argType = arg?.GetType() ?? null;
if (arg == null)
{
Push(GearsValue.NilValue);
}
else if (GearsNativeWrapper.IsNumeric(argType))
{
double fieldValue = Convert.ToDouble(arg);
Push(new GearsValue(fieldValue));
}
else if (argType == typeof(bool))
{
bool fieldValue = Convert.ToBoolean(arg);
Push(fieldValue ? GearsValue.TrueValue : GearsValue.FalseValue);
}
else if (argType == typeof(string))
{
string fieldValue = Convert.ToString(arg);
if (fieldValue == null)
{
Push(GearsValue.NilValue);
}
else
{
Push(GearsValue.CreateObjPtr(HeapAddObject(new GearsObjString(fieldValue))));
}
}
else if (argType.IsSubclassOf(typeof(object)))
{
if (arg == null)
{
Push(GearsValue.NilValue);
}
else
{
Push(GearsValue.CreateObjPtr(HeapAddObject(new GearsObjInstanceNative(this, arg))));
}
}
else
{
// error: could not pass arg of this type
returned = $"Error: called '{BitString.GetBitStr(name)}' with argument of type '{argType.Name}' as parameter {i}. Gears could not interpret this argument.";
return(false);
}
}
Call(args?.Length ?? 0);
Run();
returned = LastReturnValue; // the return value
// todo: process return value?
return(true);
}
