System.Xml.Xsl.Runtime.XmlQueryRuntime.XmlQueryRuntime C# (CSharp) Method

        internal XmlQueryRuntime(XmlILCommand cmd, object defaultDataSource, XmlResolver dataSources, XsltArgumentList argList, XmlSequenceWriter seqWrt) {
            Debug.Assert(cmd != null, "Command object must be non-null");
            string[] names = cmd.Names;
            Int32Pair[] filters = cmd.Filters;
            WhitespaceRuleLookup wsRules;
            int i;

            this.cmd = cmd;

            // Early-Bound Library Objects
            wsRules = (cmd.WhitespaceRules.Count != 0) ? new WhitespaceRuleLookup(cmd.WhitespaceRules) : null;
            this.ctxt = new XmlQueryContext(this, defaultDataSource, dataSources, argList, wsRules);
            this.xsltLib = null;
            this.earlyInfo = cmd.EarlyBound;
            this.earlyObjects = (this.earlyInfo != null) ? new object[earlyInfo.Length] : null;

            // Global variables and parameters
            this.globalNames = cmd.GlobalNames;
            this.globalValues = (this.globalNames != null) ? new object[this.globalNames.Length] : null;

            // Names
            this.nameTableQuery = this.ctxt.QueryNameTable;
            this.atomizedNames = null;

            if (names != null) {
                // Atomize all names in "nameTableQuery".  Use names from the default data source's
                // name table when possible.
                XmlNameTable nameTableDefault = ctxt.DefaultNameTable;
                this.atomizedNames = new string[names.Length];

                if (nameTableDefault != this.nameTableQuery && nameTableDefault != null) {
                    // Ensure that atomized names from the default data source are added to the
                    // name table used in this query
                    for (i = 0; i < names.Length; i++) {
                        string name = nameTableDefault.Get(names[i]);
                        this.atomizedNames[i] = this.nameTableQuery.Add(name ?? names[i]);
                    }
                }
                else {
                    // Enter names into nametable used in this query
                    for (i = 0; i < names.Length; i++)
                        this.atomizedNames[i] = this.nameTableQuery.Add(names[i]);
                }
            }

            // Name filters
            this.filters = null;
            if (filters != null) {
                // Construct name filters.  Each pair of integers in the filters[] array specifies the
                // (localName, namespaceUri) of the NameFilter to be created.
                this.filters = new XmlNavigatorFilter[filters.Length];

                for (i = 0; i < filters.Length; i++)
                    this.filters[i] = XmlNavNameFilter.Create(this.atomizedNames[filters[i].Left], this.atomizedNames[filters[i].Right]);
            }

            // Prefix maping lists
            this.prefixMappingsList = cmd.PrefixMappingsList;

            // Xml types
            this.types = cmd.Types;

            // Xml collations
            this.collations = cmd.Collations;

            // Document ordering
            this.docOrderCmp = new DocumentOrderComparer();

            // Indexes
            this.indexes = null;

            // Output construction
            this.stkOutput = new Stack<XmlQueryOutput>(16);
            this.output = new XmlQueryOutput(this, seqWrt);
        }