Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.SqlXml/System/Xml/Xsl/XsltOld/Templatemanager.cs

@@ -0,0 +1,94 @@
+//------------------------------------------------------------------------------
+// <copyright file="TemplateManager.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+// <owner current="true" primary="true">[....]</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 System.Collections;
+
+    internal class TemplateManager {
+        private XmlQualifiedName mode;
+        internal ArrayList       templates;
+        private Stylesheet       stylesheet;    // Owning stylesheet
+
+        private class TemplateComparer : IComparer {
+            public int Compare(object x, object y) {
+                Debug.Assert(x != null && x is TemplateAction);
+                Debug.Assert(y != null && y is TemplateAction);
+
+                TemplateAction tx = (TemplateAction) x;
+                TemplateAction ty = (TemplateAction) y;
+
+                Debug.Assert(! Double.IsNaN(tx.Priority));
+                Debug.Assert(! Double.IsNaN(ty.Priority));
+
+                if (tx.Priority == ty.Priority) {
+                    Debug.Assert(tx.TemplateId != ty.TemplateId || tx == ty);
+                    return tx.TemplateId - ty.TemplateId;
+                }
+                else {
+                    return tx.Priority > ty.Priority ? 1 : -1;
+                }
+            }
+        }
+
+        private static TemplateComparer s_TemplateComparer = new TemplateComparer();
+
+        internal XmlQualifiedName Mode {
+            get { return this.mode; }
+        }
+
+        internal TemplateManager(Stylesheet stylesheet, XmlQualifiedName mode) {
+            this.mode       = mode;
+            this.stylesheet = stylesheet;
+        }
+
+        internal void AddTemplate(TemplateAction template) {
+            Debug.Assert(template != null);
+            Debug.Assert(
+                ((object) this.mode == (object) template.Mode) ||
+                (template.Mode == null && this.mode.Equals(XmlQualifiedName.Empty)) ||
+                this.mode.Equals(template.Mode)
+            );
+
+            if (this.templates == null) {
+                this.templates = new ArrayList();
+            }
+
+            this.templates.Add(template);
+        }
+
+        internal void ProcessTemplates() {
+            if (this.templates != null) {
+                this.templates.Sort(s_TemplateComparer);
+            }
+        }
+
+        internal TemplateAction FindTemplate(Processor processor, XPathNavigator navigator) {
+            if (this.templates == null) {
+                return null;
+            }
+
+            Debug.Assert(this.templates != null);
+            for (int templateIndex = this.templates.Count - 1; templateIndex >= 0 ; templateIndex --) {
+                TemplateAction action = (TemplateAction) this.templates[templateIndex];
+                int matchKey = action.MatchKey;
+
+                if (matchKey != Compiler.InvalidQueryKey) {
+                    if (processor.Matches(navigator, matchKey)) {
+                        return action;
+                    }
+                }
+            }
+
+            return null;
+        }
+    }
+}