System.Xml.Xsl.XsltOld.CallTemplateAction.CompileContent C# (CSharp) Method

        private void CompileContent(Compiler compiler) {
            NavigatorInput input = compiler.Input;
            
            if (compiler.Recurse()) {
                do {
                    switch(input.NodeType) {
                    case XPathNodeType.Element:
                        compiler.PushNamespaceScope();
                        string nspace = input.NamespaceURI;
                        string name   = input.LocalName;

                        if (Keywords.Equals(nspace, input.Atoms.XsltNamespace) && Keywords.Equals(name, input.Atoms.WithParam)) {
                                WithParamAction par = compiler.CreateWithParamAction();
                                CheckDuplicateParams(par.Name);
                                AddAction(par);
                        }
                        else {
                            throw compiler.UnexpectedKeyword();
                        }
                        compiler.PopScope();
                        break;
                    case XPathNodeType.Comment:
                    case XPathNodeType.ProcessingInstruction:
                    case XPathNodeType.Whitespace:
                    case XPathNodeType.SignificantWhitespace:
                        break;
                    default:
                        throw XsltException.Create(Res.Xslt_InvalidContents, Keywords.s_CallTemplate);
                    }
                } while(compiler.Advance());

                compiler.ToParent();
            }
        }