88 lines
3.2 KiB
C#
88 lines
3.2 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="CopyOfAction.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">Microsoft</owner>
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//------------------------------------------------------------------------------
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namespace System.Xml.Xsl.XsltOld {
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using Res = System.Xml.Utils.Res;
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using System;
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using System.Diagnostics;
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using System.Xml;
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using System.Xml.XPath;
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using MS.Internal.Xml.XPath;
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internal class CopyOfAction : CompiledAction {
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private const int ResultStored = 2;
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private const int NodeSetCopied = 3;
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private int selectKey = Compiler.InvalidQueryKey;
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internal override void Compile(Compiler compiler) {
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CompileAttributes(compiler);
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CheckRequiredAttribute(compiler, selectKey != Compiler.InvalidQueryKey, "select");
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CheckEmpty(compiler);
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}
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internal override bool CompileAttribute(Compiler compiler) {
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string name = compiler.Input.LocalName;
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string value = compiler.Input.Value;
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if (Ref.Equal(name, compiler.Atoms.Select)) {
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this.selectKey = compiler.AddQuery(value);
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}
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else {
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return false;
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}
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return true;
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}
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internal override void Execute(Processor processor, ActionFrame frame) {
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Debug.Assert(processor != null && frame != null);
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switch (frame.State) {
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case Initialized:
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Debug.Assert(frame.NodeSet != null);
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Query query = processor.GetValueQuery(this.selectKey);
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object result = query.Evaluate(frame.NodeSet);
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if (result is XPathNodeIterator) {
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// we cash this query because otherwise current() works incorrectly. Bug#382166.
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// To be perfect we should use frame.NewNodeSet here
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processor.PushActionFrame(CopyNodeSetAction.GetAction(), new XPathArrayIterator(query));
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frame.State = NodeSetCopied;
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break;
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}
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XPathNavigator nav = result as XPathNavigator;
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if (nav != null) {
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processor.PushActionFrame(CopyNodeSetAction.GetAction(), new XPathSingletonIterator(nav));
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frame.State = NodeSetCopied;
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break;
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}
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string value = XmlConvert.ToXPathString(result);
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if (processor.TextEvent(value)) {
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frame.Finished();
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} else {
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frame.StoredOutput = value;
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frame.State = ResultStored;
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}
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break;
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case ResultStored:
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Debug.Assert(frame.StoredOutput != null);
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processor.TextEvent(frame.StoredOutput);
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frame.Finished();
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break;
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case NodeSetCopied:
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Debug.Assert(frame.State == NodeSetCopied);
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frame.Finished();
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break;
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}
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}
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}
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}
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