System.Xml.Xsl.Xslt.XsltLoader.LoadTemplate C# (CSharp) Method

        private void LoadTemplate(NsDecl stylesheetNsList)
        {
            Debug.Assert(_curTemplate == null);
            ContextInfo ctxInfo = _input.GetAttributes(_templateAttributes);
            ctxInfo.nsList = MergeNamespaces(ctxInfo.nsList, stylesheetNsList);

            string match = ParseStringAttribute(0, "match");
            QilName name = ParseQNameAttribute(1);
            double priority = double.NaN;
            if (_input.MoveToXsltAttribute(2, "priority"))
            {
                priority = XPathConvert.StringToDouble(_input.Value);
                if (double.IsNaN(priority) && !_input.ForwardCompatibility)
                {
                    ReportError(/*[XT0530]*/SR.Xslt_InvalidAttrValue, "priority", _input.Value);
                }
            }
            QilName mode = V1 ? ParseModeAttribute(3) : ParseModeListAttribute(3);

            if (match == null)
            {
                CheckError(!_input.AttributeExists(1, "name"), /*[XT_007]*/SR.Xslt_BothMatchNameAbsent);
                CheckError(_input.AttributeExists(3, "mode"), /*[XT_008]*/SR.Xslt_ModeWithoutMatch);
                mode = nullMode;
                if (_input.AttributeExists(2, "priority"))
                {
                    if (V1)
                    {
                        ReportWarning(/*[XT_008]*/SR.Xslt_PriorityWithoutMatch);
                    }
                    else
                    {
                        ReportError(/*[XT_008]*/SR.Xslt_PriorityWithoutMatch);
                    }
                }
            }

            if (_input.MoveToXsltAttribute(4, "as"))
            {
                ReportNYI("xsl:template/@as");
            }

            _curTemplate = f.Template(name, match, mode, priority, _input.XslVersion);

            // Template without match considered to not have mode and can't call xsl:apply-imports
            _input.CanHaveApplyImports = (match != null);

            SetInfo(_curTemplate,
                LoadEndTag(LoadInstructions(InstructionFlags.AllowParam)), ctxInfo
            );

            if (!_curStylesheet.AddTemplate(_curTemplate))
            {
                ReportError(/*[XT0660]*/SR.Xslt_DupTemplateName, _curTemplate.Name.QualifiedName);
            }
            _curTemplate = null;
        }