Avt.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / Avt.cs / 1305376 / Avt.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
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; 
    using System.Text;
 
    internal sealed class Avt { 
        private string      constAvt;
        private TextEvent[] events; 

        private Avt(string constAvt) {
            Debug.Assert(constAvt != null);
            this.constAvt = constAvt; 
        }
 
        private Avt(ArrayList eventList) { 
            Debug.Assert(eventList != null);
            this.events = new TextEvent[eventList.Count]; 
            for(int i = 0; i < eventList.Count; i ++) {
                this.events[i] = (TextEvent) eventList[i];
            }
        } 

        public bool IsConstant { 
            get {return this.events == null;} 
        }
 
        internal string Evaluate(Processor processor, ActionFrame frame) {
            if (IsConstant) {
                Debug.Assert(constAvt != null);
                return constAvt; 
            }
            else { 
                Debug.Assert(processor != null && frame != null); 

                StringBuilder builder = processor.GetSharedStringBuilder(); 

                for(int i = 0; i < events.Length; i ++) {
                    builder.Append(events[i].Evaluate(processor, frame));
                } 
                processor.ReleaseSharedStringBuilder();
                return builder.ToString(); 
            } 
        }
 
        internal static Avt CompileAvt(Compiler compiler, string avtText) {
            Debug.Assert(compiler != null);
            Debug.Assert(avtText != null);
 
            bool constant;
            ArrayList list = compiler.CompileAvt(avtText, out constant); 
            return constant ? new Avt(avtText) : new Avt(list); 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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