Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / InputScopeManager.cs / 1305376 / InputScopeManager.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml.Xsl.XsltOld { using Res = System.Xml.Utils.Res; using System; using System.Diagnostics; using System.Xml; using System.Xml.XPath; internal class InputScopeManager { private InputScope scopeStack; private string defaultNS = string.Empty; private XPathNavigator navigator; // We need this nsvigator for document() function implementation public InputScopeManager(XPathNavigator navigator, InputScope rootScope) { this.navigator = navigator; this.scopeStack = rootScope; } internal InputScope CurrentScope { get { return this.scopeStack; } } internal InputScope VariableScope { get { Debug.Assert(this.scopeStack != null); Debug.Assert(this.scopeStack.Parent != null); return this.scopeStack.Parent; } } internal InputScopeManager Clone() { InputScopeManager manager = new InputScopeManager(this.navigator, null); manager.scopeStack = this.scopeStack; manager.defaultNS = this.defaultNS; return manager; } public XPathNavigator Navigator { get {return this.navigator;} } internal InputScope PushScope() { this.scopeStack = new InputScope(this.scopeStack); return this.scopeStack; } internal void PopScope() { Debug.Assert(this.scopeStack != null, "Push/Pop disbalance"); if (this.scopeStack == null) { return; } for (NamespaceDecl scope = this.scopeStack.Scopes; scope != null; scope = scope.Next) { this.defaultNS = scope.PrevDefaultNsUri; } this.scopeStack = this.scopeStack.Parent; } internal void PushNamespace(string prefix, string nspace) { Debug.Assert(this.scopeStack != null, "PushScope wasn't called"); Debug.Assert(prefix != null); Debug.Assert(nspace != null); this.scopeStack.AddNamespace(prefix, nspace, this.defaultNS); if (prefix == null || prefix.Length == 0) { this.defaultNS = nspace; } } // CompileContext public string DefaultNamespace { get { return this.defaultNS; } } private string ResolveNonEmptyPrefix(string prefix) { Debug.Assert(this.scopeStack != null, "PushScope wasn't called"); Debug.Assert(prefix != null || prefix.Length != 0); if (prefix == "xml") { return XmlReservedNs.NsXml; } else if (prefix == "xmlns") { return XmlReservedNs.NsXmlNs; } for (InputScope inputScope = this.scopeStack; inputScope != null; inputScope = inputScope.Parent) { string nspace = inputScope.ResolveNonAtom(prefix); if (nspace != null) { return nspace; } } throw XsltException.Create(Res.Xslt_InvalidPrefix, prefix); } public string ResolveXmlNamespace(string prefix) { Debug.Assert(prefix != null); if (prefix.Length == 0) { return this.defaultNS; } return ResolveNonEmptyPrefix(prefix); } [System.Runtime.TargetedPatchingOptOutAttribute("Performance critical to inline across NGen image boundaries")] public string ResolveXPathNamespace(string prefix) { Debug.Assert(prefix != null); if (prefix.Length == 0) { return string.Empty; } return ResolveNonEmptyPrefix(prefix); } internal void InsertExtensionNamespaces(string[] nsList) { Debug.Assert(this.scopeStack != null, "PushScope wasn't called"); Debug.Assert(nsList != null); for (int idx = 0; idx < nsList.Length; idx++) { this.scopeStack.InsertExtensionNamespace(nsList[idx]); } } internal bool IsExtensionNamespace(String nspace) { Debug.Assert(this.scopeStack != null, "PushScope wasn't called"); for (InputScope inputScope = this.scopeStack; inputScope != null; inputScope = inputScope.Parent) { if (inputScope.IsExtensionNamespace( nspace )) { return true; } } return false; } internal void InsertExcludedNamespaces(string[] nsList) { Debug.Assert(this.scopeStack != null, "PushScope wasn't called"); Debug.Assert(nsList != null); for (int idx = 0; idx < nsList.Length; idx++) { this.scopeStack.InsertExcludedNamespace(nsList[idx]); } } internal bool IsExcludedNamespace(String nspace) { Debug.Assert(this.scopeStack != null, "PushScope wasn't called"); for (InputScope inputScope = this.scopeStack; inputScope != null; inputScope = inputScope.Parent) { if (inputScope.IsExcludedNamespace( nspace )) { return true; } } return false; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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