Antlr4.Runtime.Tree.Xpath.XPathRuleElement.Evaluate C# (CSharp) Метод

        public override ICollection<IParseTree> Evaluate(IParseTree t)
        {
            // return all children of t that match nodeName
            IList<IParseTree> nodes = new List<IParseTree>();
            foreach (ITree c in Trees.GetChildren(t))
            {
                if (c is ParserRuleContext)
                {
                    ParserRuleContext ctx = (ParserRuleContext)c;
                    if ((ctx.RuleIndex == ruleIndex && !invert) || (ctx.RuleIndex != ruleIndex && invert))
                    {
                        nodes.Add(ctx);
                    }
                }
            }
            return nodes;
        }