/// <summary>
/// Check for recursion, and add the rule to the list of rules that have been used
/// </summary>
/// <param name="rule"></param>
/// <param name="tokens"></param>
/// <returns>True when the rule with the same tokens list is found in the list</returns>
internal bool HasRecursion(PPRule rule, IList <XSharpToken> tokens)
{
// check to see if this is already there
if (_list.Count == _maxDepth)
{
_pp.Error(tokens[0], ErrorCode.ERR_PreProcessorRecursiveRule, rule.Name);
return(true);
}
foreach (var item in _list)
{
if (item.isDuplicate(rule, tokens))
{
_pp.Error(tokens[0], ErrorCode.ERR_PreProcessorRecursiveRule, rule.Name);
return(true);
}
}
_list.Add(new PPUsedRule(rule, tokens));
return(false);
}