System.Xml.Xsl.XsltOld.Compiler.ResolveDocument C# (CSharp) Method

        internal NavigatorInput ResolveDocument(Uri absoluteUri)
        {
            Debug.Assert(_xmlResolver != null);
            object input = _xmlResolver.GetEntity(absoluteUri, null, null);
            string resolved = absoluteUri.ToString();

            if (input is Stream)
            {
                XmlTextReaderImpl tr = new XmlTextReaderImpl(resolved, (Stream)input);
                {
                    tr.XmlResolver = _xmlResolver;
                }
                // reader is closed by Compiler.LoadDocument()
                return new NavigatorInput(Compiler.LoadDocument(tr).CreateNavigator(), resolved, _rootScope);
            }
            else if (input is XPathNavigator)
            {
                return new NavigatorInput((XPathNavigator)input, resolved, _rootScope);
            }
            else
            {
                throw XsltException.Create(SR.Xslt_CantResolve, resolved);
            }
        }

        // SxS: This method does not take any resource name and does not expose any resources to the caller.
        // It's OK to suppress the SxS warning.
        private void CompileInclude(Compiler compiler)
        {
            Uri    uri      = compiler.ResolveUri(compiler.GetSingleAttribute(compiler.Input.Atoms.Href));
            string resolved = uri.ToString();

            if (compiler.IsCircularReference(resolved))
            {
                throw XsltException.Create(SR.Xslt_CircularInclude, resolved);
            }

            NavigatorInput input = compiler.ResolveDocument(uri);

            compiler.PushInputDocument(input);

            try
            {
                CompileDocument(compiler, /*inInclude*/ true);
            }
            catch (XsltCompileException)
            {
                throw;
            }
            catch (Exception e)
            {
                throw new XsltCompileException(e, input.BaseURI, input.LineNumber, input.LinePosition);
            }
            finally
            {
                compiler.PopInputDocument();
            }
            CheckEmpty(compiler);
        }