Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / Xml / System / Xml / XPath / Internal / XPathMultyIterator.cs / 1 / XPathMultyIterator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace MS.Internal.Xml.XPath { using System; using System.Xml; using System.Xml.XPath; using System.Diagnostics; using System.Globalization; using System.Collections; internal class XPathMultyIterator: ResetableIterator { protected ResetableIterator[] arr; protected int firstNotEmpty; protected int position; public XPathMultyIterator(ArrayList inputArray) { // this.arr = new ResetableIterator[inputArray.Count]; for (int i = 0; i < this.arr.Length; i ++) { this.arr[i] = new XPathArrayIterator((ArrayList) inputArray[i]); } Init(); } private void Init() { for (int i = 0; i < arr.Length; i ++) { Advance(i); } for (int i = arr.Length - 2; firstNotEmpty <= i; ) { if (SiftItem(i)) { i --; } } } // returns false is iterator at pos reached it's end & as a result head of the array may be moved bool Advance(int pos) { if (! arr[pos].MoveNext()) { if (firstNotEmpty != pos) { ResetableIterator empty = arr[pos]; Array.Copy(arr, firstNotEmpty, arr, firstNotEmpty + 1, pos - firstNotEmpty); arr[firstNotEmpty] = empty; } firstNotEmpty ++; return false; } return true; } #if false string dump { get { return Dump(); } } string Dump(ResetableIterator it) { it = (ResetableIterator) it.Clone(); System.Text.StringBuilder sb = new System.Text.StringBuilder(); sb.Append("("); do { XPathNavigator nav = it.Current.Clone(); nav.MoveToAttribute("id1", ""); sb.Append(nav.Value); sb.Append(", "); } while (it.MoveNext()); sb.Length = sb.Length - 2; sb.Append(")"); return sb.ToString(); } string Dump() { System.Text.StringBuilder sb = new System.Text.StringBuilder(); for (int i = 0; i < arr.Length; i ++) { sb.Append(i); sb.Append(": "); if (i < firstNotEmpty) { sb.Append("()"); } else { sb.Append(Dump(arr[i])); } sb.Append("; "); } return sb.ToString(); } #endif // Invariant: a[i] < a[i+1] for i > item // returns flase is head of the list was moved & as a result consistancy of list depends on head consistancy. bool SiftItem(int item) { Debug.Assert(firstNotEmpty <= item && item < arr.Length); ResetableIterator it = arr[item]; while (item + 1 < arr.Length) { XmlNodeOrder order = Query.CompareNodes(it.Current, arr[item + 1].Current); if (order == XmlNodeOrder.Before) { break; } if (order == XmlNodeOrder.After) { arr[item] = arr[item + 1]; //arr[item + 1] = it; item ++; } else { // Same arr[item] = it; if (! Advance(item)) { return false; } it = arr[item]; } } arr[item] = it; return true; } public override void Reset() { firstNotEmpty = 0; position = 0; for (int i = 0; i < arr.Length; i ++) { arr[i].Reset(); } Init(); } public XPathMultyIterator(XPathMultyIterator it) { this.arr = (ResetableIterator[]) it.arr.Clone(); this.firstNotEmpty = it.firstNotEmpty; this.position = it.position; } public override XPathNodeIterator Clone() { return new XPathMultyIterator(this); } public override XPathNavigator Current { get { Debug.Assert(position != 0, "MoveNext() wasn't called"); Debug.Assert(firstNotEmpty < arr.Length, "MoveNext() returned false"); return arr[firstNotEmpty].Current; } } public override int CurrentPosition { get { return position; } } public override bool MoveNext() { // if (firstNotEmpty >= arr.Length) { return false; } if (position != 0) { if (Advance(firstNotEmpty)) { SiftItem(firstNotEmpty); } if (firstNotEmpty >= arr.Length) { return false; } } position ++; return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WebPartConnectionsCancelEventArgs.cs
- SHA256.cs
- PerfCounters.cs
- BinaryVersion.cs
- ThicknessAnimationBase.cs
- CharConverter.cs
- EncoderBestFitFallback.cs
- BaseParser.cs
- GeneralTransformGroup.cs
- NetStream.cs
- LinkDesigner.cs
- ImageConverter.cs
- XmlElementAttributes.cs
- FixedSOMPageConstructor.cs
- TitleStyle.cs
- SessionChannels.cs
- OutOfMemoryException.cs
- CapabilitiesAssignment.cs
- BrowserDefinition.cs
- TextElementAutomationPeer.cs
- ByteStream.cs
- FixedDocument.cs
- COM2ColorConverter.cs
- EventLogException.cs
- MetadataCollection.cs
- AdapterUtil.cs
- BasicKeyConstraint.cs
- SessionState.cs
- ProofTokenCryptoHandle.cs
- SoapInteropTypes.cs
- ButtonFieldBase.cs
- SafeCoTaskMem.cs
- InheritanceContextHelper.cs
- ClientBuildManagerCallback.cs
- ControlBuilderAttribute.cs
- RegexReplacement.cs
- Error.cs
- PrintingPermission.cs
- FixedDSBuilder.cs
- SemaphoreSecurity.cs
- ServiceSecurityContext.cs
- HttpRequestWrapper.cs
- DataService.cs
- ActivityTrace.cs
- XmlMessageFormatter.cs
- XmlWriterTraceListener.cs
- FormViewUpdatedEventArgs.cs
- GeneralTransform3DTo2D.cs
- ArgumentValidation.cs
- ToolStripDropDown.cs
- CommonGetThemePartSize.cs
- MonthChangedEventArgs.cs
- DebugViewWriter.cs
- DiscardableAttribute.cs
- SvcMapFile.cs
- SmiSettersStream.cs
- OSFeature.cs
- SafeEventLogReadHandle.cs
- XmlDocumentFragment.cs
- altserialization.cs
- UITypeEditor.cs
- CompoundFileStreamReference.cs
- ObjectListItemCollection.cs
- BindingContext.cs
- AlternateViewCollection.cs
- Int32Rect.cs
- WhitespaceRuleLookup.cs
- AnimationException.cs
- Html32TextWriter.cs
- BitmapEffect.cs
- NetworkStream.cs
- Control.cs
- FormsAuthenticationModule.cs
- ServiceChannel.cs
- UnsafeCollabNativeMethods.cs
- CompositeFontInfo.cs
- KnowledgeBase.cs
- FixedSOMTable.cs
- SocketAddress.cs
- Bits.cs
- _UriTypeConverter.cs
- MenuEventArgs.cs
- base64Transforms.cs
- CacheForPrimitiveTypes.cs
- ScaleTransform3D.cs
- _SecureChannel.cs
- WinEventWrap.cs
- CultureInfoConverter.cs
- StringBlob.cs
- printdlgexmarshaler.cs
- InternalsVisibleToAttribute.cs
- SafeIUnknown.cs
- CTreeGenerator.cs
- NullableIntMinMaxAggregationOperator.cs
- StreamGeometry.cs
- GroupByExpressionRewriter.cs
- MetabaseSettingsIis7.cs
- SoapSchemaImporter.cs
- RequestQueue.cs
- TypeTypeConverter.cs