Antlr4.Semantics.BasicSemanticChecks.CheckInvalidRuleRef C# (CSharp) Method

        internal virtual void CheckInvalidRuleRef(IToken ruleID)
        {
            string fileName = ruleID.InputStream.SourceName;
            if (g.IsLexer() && char.IsLower(ruleID.Text[0]))
            {
                g.tool.errMgr.GrammarError(ErrorType.PARSER_RULE_REF_IN_LEXER_RULE,
                                           fileName, ruleID, ruleID.Text, currentRuleName);
            }
        }