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//------------------------------------------------------------------------------
// <copyright file="NavigatorInput.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
//------------------------------------------------------------------------------
namespace System.Xml.Xsl.XsltOld {
using Res = System.Xml.Utils.Res;
using System;
using System.Diagnostics;
using System.Xml;
using System.Xml.XPath;
using Keywords = System.Xml.Xsl.Xslt.KeywordsTable;
internal class NavigatorInput {
private XPathNavigator _Navigator;
private PositionInfo _PositionInfo;
private InputScopeManager _Manager;
private NavigatorInput _Next;
private string _Href;
private Keywords _Atoms;
internal NavigatorInput Next {
get {
return _Next;
}
set {
_Next = value;
}
}
internal string Href {
get {
return _Href;
}
}
internal Keywords Atoms {
get {
return _Atoms;
}
}
internal XPathNavigator Navigator {
get {
AssertInput();
return _Navigator;
}
}
internal InputScopeManager InputScopeManager {
get {
AssertInput();
return _Manager;
}
}
internal bool Advance() {
AssertInput();
return _Navigator.MoveToNext();
}
internal bool Recurse() {
AssertInput();
return _Navigator.MoveToFirstChild();
}
internal bool ToParent() {
AssertInput();
return _Navigator.MoveToParent();
}
internal void Close() {
_Navigator = null;
_PositionInfo = null;
}
//
// Input document properties
//
//
// XPathNavigator does not support line and position numbers
//
internal int LineNumber {
get { return _PositionInfo.LineNumber; }
}
internal int LinePosition {
get { return _PositionInfo.LinePosition; }
}
internal XPathNodeType NodeType {
get {
AssertInput();
return _Navigator.NodeType;
}
}
internal string Name {
get {
AssertInput();
return _Navigator.Name;
}
}
internal string LocalName {
get {
AssertInput();
return _Navigator.LocalName;
}
}
internal string NamespaceURI {
get {
AssertInput();
return _Navigator.NamespaceURI;
}
}
internal string Prefix {
get {
AssertInput();
return _Navigator.Prefix;
}
}
internal string Value {
get {
AssertInput();
return _Navigator.Value;
}
}
internal bool IsEmptyTag {
get {
AssertInput();
return _Navigator.IsEmptyElement;
}
}
internal string BaseURI {
get {
return _Navigator.BaseURI;
}
}
internal bool MoveToFirstAttribute() {
AssertInput();
return _Navigator.MoveToFirstAttribute();
}
internal bool MoveToNextAttribute() {
AssertInput();
return _Navigator.MoveToNextAttribute();
}
internal bool MoveToFirstNamespace() {
AssertInput();
return _Navigator.MoveToFirstNamespace(XPathNamespaceScope.ExcludeXml);
}
internal bool MoveToNextNamespace() {
AssertInput();
return _Navigator.MoveToNextNamespace(XPathNamespaceScope.ExcludeXml);
}
//
// Constructor
//
internal NavigatorInput(XPathNavigator navigator, string baseUri, InputScope rootScope) {
if (navigator == null) {
throw new ArgumentNullException("navigator");
}
if (baseUri == null) {
throw new ArgumentNullException("baseUri");
}
Debug.Assert(navigator.NameTable != null);
_Next = null;
_Href = baseUri;
_Atoms = new Keywords(navigator.NameTable);
_Navigator = navigator;
_Manager = new InputScopeManager(_Navigator, rootScope);
_PositionInfo = PositionInfo.GetPositionInfo(_Navigator);
/*BeginReading:*/
AssertInput();
if (NodeType == XPathNodeType.Root) {
_Navigator.MoveToFirstChild();
}
}
internal NavigatorInput(XPathNavigator navigator): this(navigator, navigator.BaseURI, null) {}
//
// Debugging support
//
[System.Diagnostics.Conditional("DEBUG")]
internal void AssertInput() {
Debug.Assert(_Navigator != null);
}
}
}
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