66 lines
2.2 KiB
C#
66 lines
2.2 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="Avt.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">[....]</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.Collections;
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using System.Xml;
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using System.Xml.XPath;
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using System.Text;
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internal sealed class Avt {
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private string constAvt;
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private TextEvent[] events;
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private Avt(string constAvt) {
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Debug.Assert(constAvt != null);
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this.constAvt = constAvt;
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}
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private Avt(ArrayList eventList) {
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Debug.Assert(eventList != null);
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this.events = new TextEvent[eventList.Count];
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for(int i = 0; i < eventList.Count; i ++) {
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this.events[i] = (TextEvent) eventList[i];
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}
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}
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public bool IsConstant {
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get {return this.events == null;}
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}
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internal string Evaluate(Processor processor, ActionFrame frame) {
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if (IsConstant) {
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Debug.Assert(constAvt != null);
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return constAvt;
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}
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else {
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Debug.Assert(processor != null && frame != null);
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StringBuilder builder = processor.GetSharedStringBuilder();
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for(int i = 0; i < events.Length; i ++) {
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builder.Append(events[i].Evaluate(processor, frame));
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}
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processor.ReleaseSharedStringBuilder();
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return builder.ToString();
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}
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}
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internal static Avt CompileAvt(Compiler compiler, string avtText) {
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Debug.Assert(compiler != null);
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Debug.Assert(avtText != null);
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bool constant;
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ArrayList list = compiler.CompileAvt(avtText, out constant);
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return constant ? new Avt(avtText) : new Avt(list);
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}
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}
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}
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