public static IoObject slotHasKey(IoObject target, IoObject locals, IoObject message)
{
IoMap dict = target as IoMap;
IoMessage m = message as IoMessage;
IoObject key = m.localsValueArgAt(locals, 0);
if (dict.lookupMap(key) == null)
{
return(dict.tag.state.ioFalse);
}
return(dict.tag.state.ioTrue);
}
public static IoObject slotAtIfAbsentPut(IoObject target, IoObject locals, IoObject message)
{
IoMessage m = message as IoMessage;
IoObject key = m.localsValueArgAt(locals, 0);
IoObject value = m.localsValueArgAt(locals, 1);
IoMap dict = target as IoMap;
if (dict.lookupMap(key) == null)
{
dict.map[key.ToString()] = value;
}
return(target);
}
public static IoObject slotAt(IoObject target, IoObject locals, IoObject message)
{
IoMessage m = message as IoMessage;
IoObject result = null;
IoObject symbol = m.localsValueArgAt(locals, 0);
IoMap dict = target as IoMap;
result = dict.lookupMap(symbol) as IoObject;
if (result == null && m.args.Count > 1)
{
result = m.localsValueArgAt(locals, 1);
}
return(result == null ? dict.tag.state.ioNil : result);
}