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//------------------------------------------------------------------------------
// <copyright file="CopyAction.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 MS.Internal.Xml.XPath;
internal class CopyAction : ContainerAction {
// Local execution states
private const int CopyText = 4;
private const int NamespaceCopy = 5;
private const int ContentsCopy = 6;
private const int ProcessChildren = 7;
private const int ChildrenOnly = 8;
private string useAttributeSets;
private bool empty;
internal override void Compile(Compiler compiler) {
CompileAttributes(compiler);
if (compiler.Recurse()) {
CompileTemplate(compiler);
compiler.ToParent();
}
if (this.containedActions == null)
this.empty = true;
}
internal override bool CompileAttribute(Compiler compiler) {
string name = compiler.Input.LocalName;
string value = compiler.Input.Value;
if (Ref.Equal(name, compiler.Atoms.UseAttributeSets)) {
this.useAttributeSets = value;
AddAction(compiler.CreateUseAttributeSetsAction());
}
else {
return false;
}
return true;
}
internal override void Execute(Processor processor, ActionFrame frame) {
Debug.Assert(processor != null && frame != null);
while (processor.CanContinue) {
switch (frame.State) {
case Initialized:
if (Processor.IsRoot(frame.Node)) {
processor.PushActionFrame(frame);
frame.State = ChildrenOnly;
break;
}
if (processor.CopyBeginEvent(frame.Node, this.empty) == false) {
// This event wasn't processed
break;
}
frame.State = NamespaceCopy;
continue;
case NamespaceCopy:
frame.State = ContentsCopy;
if ( frame.Node.NodeType == XPathNodeType.Element ) {
processor.PushActionFrame(CopyNamespacesAction.GetAction(), frame.NodeSet);
break;
}
continue;
case ContentsCopy:
if (frame.Node.NodeType == XPathNodeType.Element && !this.empty) {
//Debug.Assert(frame.Node.HasValue == false);
processor.PushActionFrame(frame);
frame.State = ProcessChildren;
break;
}
else {
if (processor.CopyTextEvent(frame.Node)) {
frame.State = ProcessChildren;
continue;
}
else {
// This event wasn't processed
break;
}
}
case ProcessChildren:
if (processor.CopyEndEvent(frame.Node)) {
frame.Finished();
}
break;
case ChildrenOnly:
frame.Finished();
break;
default:
Debug.Fail("Invalid CopyAction execution state");
break;
}
break;
}
}
}
}
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