Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,79 @@
+//------------------------------------------------------------------------------
+// <copyright file="TextAction.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;
+
+    internal class TextAction : CompiledAction {
+        private bool   disableOutputEscaping;
+        private string text;
+
+        internal override void Compile(Compiler compiler) {
+            CompileAttributes(compiler);
+            CompileContent(compiler);
+
+        }
+
+        internal override bool CompileAttribute(Compiler compiler) {
+            string name   = compiler.Input.LocalName;
+            string value  = compiler.Input.Value;
+
+            if (Ref.Equal(name, compiler.Atoms.DisableOutputEscaping)) {
+                this.disableOutputEscaping = compiler.GetYesNo(value);
+            }
+            else {
+                return false;
+            }
+
+            return true;
+        }
+
+        private void CompileContent(Compiler compiler) {
+            if (compiler.Recurse()) {
+                NavigatorInput input = compiler.Input;
+
+                this.text = string.Empty;
+
+                do {
+                    switch (input.NodeType) {
+                    case XPathNodeType.Text:
+                    case XPathNodeType.Whitespace:
+                    case XPathNodeType.SignificantWhitespace:
+                        this.text += input.Value;
+                        break;
+                    case XPathNodeType.Comment:
+                    case XPathNodeType.ProcessingInstruction:
+                        break;
+                    default:
+                        throw compiler.UnexpectedKeyword();
+                    }
+                } while(compiler.Advance());
+                compiler.ToParent();
+            }
+        }
+
+        internal override void Execute(Processor processor, ActionFrame frame) {
+            Debug.Assert(processor != null && frame != null);
+
+            switch (frame.State) {
+            case Initialized:
+                if (processor.TextEvent(this.text, disableOutputEscaping)) {
+                    frame.Finished();
+                }
+                break;
+
+            default:
+                Debug.Fail("Invalid execution state in TextAction");
+                break;
+            }
+        }
+    }
+}