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//------------------------------------------------------------------------------
// <copyright file="ApplyTemplatesAction.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.Collections;
using System.Xml;
using System.Xml.XPath;
internal class ApplyTemplatesAction : ContainerAction {
private const int ProcessedChildren = 2;
private const int ProcessNextNode = 3;
private const int PositionAdvanced = 4;
private const int TemplateProcessed = 5;
private int selectKey = Compiler.InvalidQueryKey;
private XmlQualifiedName mode;
//
// <xsl:template match="*|/" [mode="?"]>
// <xsl:apply-templates [mode="?"]/>
// </xsl:template>
//
private static ApplyTemplatesAction s_BuiltInRule = new ApplyTemplatesAction();
internal static ApplyTemplatesAction BuiltInRule() {
Debug.Assert(s_BuiltInRule != null);
return s_BuiltInRule;
}
internal static ApplyTemplatesAction BuiltInRule(XmlQualifiedName mode) {
return(mode == null || mode.IsEmpty) ? BuiltInRule() : new ApplyTemplatesAction(mode);
}
internal ApplyTemplatesAction() {}
private ApplyTemplatesAction(XmlQualifiedName mode) {
Debug.Assert(mode != null);
this.mode = mode;
}
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.Select )) {
this.selectKey = compiler.AddQuery(value);
}
else if (Ref.Equal(name, compiler.Atoms.Mode )) {
Debug.Assert(this.mode == null);
if (compiler.AllowBuiltInMode && value == "*") {
this.mode = Compiler.BuiltInMode;
}
else {
this.mode = compiler.CreateXPathQName(value);
}
}
else {
return false;
}
return true;
}
private void CompileContent(Compiler compiler) {
NavigatorInput input = compiler.Input;
if (compiler.Recurse()) {
do {
switch (input.NodeType) {
case XPathNodeType.Element:
compiler.PushNamespaceScope();
string nspace = input.NamespaceURI;
string name = input.LocalName;
if (Ref.Equal(nspace, input.Atoms.UriXsl)) {
if (Ref.Equal(name, input.Atoms.Sort)) {
AddAction(compiler.CreateSortAction());
}
else if (Ref.Equal(name, input.Atoms.WithParam)) {
WithParamAction par = compiler.CreateWithParamAction();
CheckDuplicateParams(par.Name);
AddAction(par);
}
else {
throw compiler.UnexpectedKeyword();
}
}
else {
throw compiler.UnexpectedKeyword();
}
compiler.PopScope();
break;
case XPathNodeType.Comment:
case XPathNodeType.ProcessingInstruction:
case XPathNodeType.Whitespace:
case XPathNodeType.SignificantWhitespace:
break;
default:
throw XsltException.Create(Res.Xslt_InvalidContents, "apply-templates");
}
}
while (compiler.Advance());
compiler.ToParent();
}
}
internal override void Execute(Processor processor, ActionFrame frame) {
Debug.Assert(processor != null && frame != null);
switch (frame.State) {
case Initialized:
processor.ResetParams();
processor.InitSortArray();
if (this.containedActions != null && this.containedActions.Count > 0) {
processor.PushActionFrame(frame);
frame.State = ProcessedChildren;
break;
}
goto case ProcessedChildren;
case ProcessedChildren:
if (this.selectKey == Compiler.InvalidQueryKey) {
if (! frame.Node.HasChildren) {
frame.Finished();
break;
}
frame.InitNewNodeSet(frame.Node.SelectChildren(XPathNodeType.All));
}
else {
frame.InitNewNodeSet(processor.StartQuery(frame.NodeSet, this.selectKey));
}
if (processor.SortArray.Count != 0) {
frame.SortNewNodeSet(processor, processor.SortArray);
}
frame.State = ProcessNextNode;
goto case ProcessNextNode;
case ProcessNextNode:
Debug.Assert(frame.State == ProcessNextNode);
Debug.Assert(frame.NewNodeSet != null);
if (frame.NewNextNode(processor)) {
frame.State = PositionAdvanced;
goto case PositionAdvanced;
}
else {
frame.Finished();
break;
}
case PositionAdvanced:
Debug.Assert(frame.State == PositionAdvanced);
processor.PushTemplateLookup(frame.NewNodeSet, this.mode, /*importsOf:*/null);
frame.State = TemplateProcessed;
break;
case TemplateProcessed:
frame.State = ProcessNextNode;
goto case ProcessNextNode;
default:
Debug.Fail("Invalid ApplyTemplatesAction execution state");
break;
}
}
}
}
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