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

        internal virtual void CheckNumRules(GrammarAST rulesNode)
        {
            if (rulesNode.ChildCount == 0)
            {
                GrammarAST root = (GrammarAST)rulesNode.Parent;
                GrammarAST IDNode = (GrammarAST)root.GetChild(0);
                g.tool.errMgr.GrammarError(ErrorType.NO_RULES, g.fileName,
                        null, IDNode.Text, g);
            }
        }