Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / Xml / System / Xml / XPath / Internal / NumberFunctions.cs / 1 / NumberFunctions.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.Xml.Xsl; using System.Text; using FT = MS.Internal.Xml.XPath.Function.FunctionType; internal sealed class NumberFunctions : ValueQuery { private Query arg = null; private FT ftype; public NumberFunctions(FT ftype, Query arg) { this.arg = arg; this.ftype = ftype; } private NumberFunctions(NumberFunctions other) : base(other) { this.arg = Clone(other.arg); this.ftype = other.ftype; } public override void SetXsltContext(XsltContext context) { if (arg != null) { arg.SetXsltContext(context); } } internal static double Number(bool arg) { return arg ? 1.0 : 0.0; } internal static double Number(string arg) { return XmlConvert.ToXPathDouble(arg); } public override object Evaluate(XPathNodeIterator nodeIterator) { switch (ftype) { case FT.FuncNumber : return Number (nodeIterator); case FT.FuncSum : return Sum (nodeIterator); case FT.FuncFloor : return Floor (nodeIterator); case FT.FuncCeiling : return Ceiling(nodeIterator); case FT.FuncRound : return Round (nodeIterator); } return null; } private double Number(XPathNodeIterator nodeIterator) { if (arg == null) { return XmlConvert.ToXPathDouble(nodeIterator.Current.Value); } object argVal = arg.Evaluate(nodeIterator); switch (GetXPathType(argVal)) { case XPathResultType.NodeSet : XPathNavigator value = arg.Advance(); if (value != null) { return Number(value.Value); } break; case XPathResultType.String : return Number((string)argVal); case XPathResultType.Boolean : return Number((bool) argVal); case XPathResultType.Number: return (double) argVal; case XPathResultType_Navigator: return Number(((XPathNavigator)argVal).Value); } return double.NaN; } private double Sum(XPathNodeIterator nodeIterator) { double sum = 0; arg.Evaluate(nodeIterator); XPathNavigator nav; while ((nav = arg.Advance()) != null) { sum += Number(nav.Value); } return sum; } private double Floor(XPathNodeIterator nodeIterator) { return Math.Floor((double) arg.Evaluate(nodeIterator)); } private double Ceiling(XPathNodeIterator nodeIterator) { return Math.Ceiling((double) arg.Evaluate(nodeIterator)); } private double Round(XPathNodeIterator nodeIterator) { double n = XmlConvert.ToXPathDouble(arg.Evaluate(nodeIterator)); return XmlConvert.XPathRound(n); } public override XPathResultType StaticType { get { return XPathResultType.Number; } } public override XPathNodeIterator Clone() { return new NumberFunctions(this); } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); w.WriteAttributeString("name", ftype.ToString()); if (arg != null) { arg.PrintQuery(w); } w.WriteEndElement(); } } } // 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
- CodePropertyReferenceExpression.cs
- BigInt.cs
- _OverlappedAsyncResult.cs
- WebPartMinimizeVerb.cs
- InfoCardAsymmetricCrypto.cs
- PreProcessor.cs
- ServiceNotStartedException.cs
- CreatingCookieEventArgs.cs
- mansign.cs
- SystemIPGlobalProperties.cs
- GlobalizationSection.cs
- PageAsyncTask.cs
- ComponentResourceManager.cs
- XmlDataSource.cs
- HelpInfo.cs
- FixUpCollection.cs
- AppDomainAttributes.cs
- CompilerParameters.cs
- Intellisense.cs
- PolyQuadraticBezierSegment.cs
- PageCodeDomTreeGenerator.cs
- DBDataPermission.cs
- DispatcherProcessingDisabled.cs
- DescendentsWalkerBase.cs
- Transactions.cs
- CacheOutputQuery.cs
- SafeLocalMemHandle.cs
- RecipientInfo.cs
- XmlWriter.cs
- WeakReference.cs
- AudioException.cs
- TimeoutValidationAttribute.cs
- TypeDelegator.cs
- TreeNodeBindingCollection.cs
- FileDataSource.cs
- Light.cs
- MetadataItemSerializer.cs
- RC2.cs
- XmlBinaryReader.cs
- XsltArgumentList.cs
- UserPrincipalNameElement.cs
- TrackingServices.cs
- Deflater.cs
- DataSourceControlBuilder.cs
- TransformGroup.cs
- PkcsMisc.cs
- Debugger.cs
- PenThread.cs
- PageThemeBuildProvider.cs
- MouseGestureValueSerializer.cs
- BindingListCollectionView.cs
- Font.cs
- XmlCharacterData.cs
- ProtocolsConfiguration.cs
- SafeProcessHandle.cs
- XmlElementList.cs
- UnsafeNativeMethods.cs
- EmbossBitmapEffect.cs
- SqlEnums.cs
- BrushConverter.cs
- ResourceManager.cs
- ToolStripDropDownMenu.cs
- HttpDictionary.cs
- ColumnWidthChangedEvent.cs
- FormViewCommandEventArgs.cs
- PageTheme.cs
- StrokeRenderer.cs
- unsafenativemethodsother.cs
- HTMLTextWriter.cs
- BindUriHelper.cs
- ResourceExpressionEditor.cs
- ObjectPersistData.cs
- Message.cs
- XmlNamespaceDeclarationsAttribute.cs
- Listbox.cs
- EmptyCollection.cs
- GridViewAutomationPeer.cs
- CustomAttributeSerializer.cs
- ApplicationFileCodeDomTreeGenerator.cs
- TypeLoadException.cs
- ArgIterator.cs
- TreeViewBindingsEditor.cs
- EntityDataSourceConfigureObjectContextPanel.cs
- DataSourceIDConverter.cs
- Graph.cs
- WindowsScroll.cs
- DataGridViewCellCollection.cs
- DebugView.cs
- DocumentViewerBaseAutomationPeer.cs
- FrugalMap.cs
- XmlNodeList.cs
- WebPartConnectVerb.cs
- ReflectionServiceProvider.cs
- PrintPageEvent.cs
- CqlWriter.cs
- CertificateManager.cs
- EvidenceTypeDescriptor.cs
- PasswordRecoveryAutoFormat.cs
- PathNode.cs
- ISAPIRuntime.cs