IronPython.Compiler.Parser.ParseWithStmt C# (CSharp) Метод

        private WithStatement ParseWithStmt() {
            Eat(TokenKind.KeywordWith);

            var withItem = ParseWithItem();
            List<WithItem> items = null;
            while (MaybeEat(TokenKind.Comma)) {
                if (items == null) {
                    items = new List<WithItem>();
                }

                items.Add(ParseWithItem());
            }
            

            var header = GetEnd();
            Statement body = ParseSuite();
            if (items != null) {
                for (int i = items.Count - 1; i >= 0; i--) {
                    var curItem = items[i];
                    var innerWith = new WithStatement(curItem.ContextManager, curItem.Variable, body);
                    innerWith.HeaderIndex = header;                    
                    innerWith.SetLoc(_globalParent, withItem.Start, GetEnd());
                    body = innerWith;
                    header = GetEnd();
                }
            }

            WithStatement ret = new WithStatement(withItem.ContextManager, withItem.Variable, body);
            ret.HeaderIndex = header;
            ret.SetLoc(_globalParent, withItem.Start, GetEnd());
            return ret;
        }