Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / XPath / Internal / NumericExpr.cs / 1 / NumericExpr.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; internal sealed class NumericExpr : ValueQuery { private Operator.Op op; private Query opnd1; private Query opnd2; public NumericExpr(Operator.Op op, Query opnd1, Query opnd2) { Debug.Assert( op == Operator.Op.PLUS || op == Operator.Op.MINUS || op == Operator.Op.MUL || op == Operator.Op.DIV || op == Operator.Op.MOD ); Debug.Assert(opnd1 != null && opnd2 != null); if (opnd1.StaticType != XPathResultType.Number) { opnd1 = new NumberFunctions(Function.FunctionType.FuncNumber, opnd1); } if (opnd2.StaticType != XPathResultType.Number) { opnd2 = new NumberFunctions(Function.FunctionType.FuncNumber, opnd2); } this.op = op; this.opnd1 = opnd1; this.opnd2 = opnd2; } private NumericExpr(NumericExpr other) : base(other) { this.op = other.op; this.opnd1 = Clone(other.opnd1); this.opnd2 = Clone(other.opnd2); } public override void SetXsltContext(XsltContext context){ opnd1.SetXsltContext(context); opnd2.SetXsltContext(context); } public override object Evaluate(XPathNodeIterator nodeIterator) { return GetValue(this.op, XmlConvert.ToXPathDouble(opnd1.Evaluate(nodeIterator)), XmlConvert.ToXPathDouble(opnd2.Evaluate(nodeIterator)) ); } private static double GetValue(Operator.Op op, double n1, double n2) { Debug.Assert(op == Operator.Op.PLUS || op == Operator.Op.MINUS || op == Operator.Op.MOD || op == Operator.Op.DIV || op == Operator.Op.MUL); switch (op) { case Operator.Op.PLUS : return n1 + n2; case Operator.Op.MINUS : return n1 - n2; case Operator.Op.MOD : return n1 % n2; case Operator.Op.DIV : return n1 / n2; case Operator.Op.MUL : return n1 * n2; } return 0; } public override XPathResultType StaticType { get { return XPathResultType.Number; } } public override XPathNodeIterator Clone() { return new NumericExpr(this); } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); w.WriteAttributeString("op", op.ToString()); opnd1.PrintQuery(w); opnd2.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
- PropertyDescriptorComparer.cs
- TextCompositionManager.cs
- CodeCatchClauseCollection.cs
- UpdateRecord.cs
- TreeViewItem.cs
- XmlToDatasetMap.cs
- Variant.cs
- JsonSerializer.cs
- MetadataFile.cs
- Utils.cs
- MulticastIPAddressInformationCollection.cs
- PropertySourceInfo.cs
- DataSysAttribute.cs
- WindowsListViewGroupHelper.cs
- QilInvokeEarlyBound.cs
- MasterPage.cs
- HtmlButton.cs
- RequestCacheManager.cs
- DispatcherFrame.cs
- DataGridViewCellStyleEditor.cs
- DataViewSetting.cs
- TextElementCollectionHelper.cs
- PersonalizationState.cs
- DbProviderConfigurationHandler.cs
- RelativeSource.cs
- ThicknessKeyFrameCollection.cs
- SessionStateContainer.cs
- PartManifestEntry.cs
- EventItfInfo.cs
- OracleString.cs
- DoubleLinkListEnumerator.cs
- Utility.cs
- PrinterSettings.cs
- FormViewPageEventArgs.cs
- SerializationHelper.cs
- ObjectSecurity.cs
- ZoneLinkButton.cs
- ConvertEvent.cs
- ProtectedProviderSettings.cs
- XmlQuerySequence.cs
- BasicHttpSecurity.cs
- InvalidateEvent.cs
- entityreference_tresulttype.cs
- ExpressionBuilder.cs
- OrthographicCamera.cs
- MetafileHeader.cs
- SafeEventHandle.cs
- Msec.cs
- ProtocolsConfigurationEntry.cs
- MetadataItem_Static.cs
- TdsParserSessionPool.cs
- KeyedCollection.cs
- XmlCompatibilityReader.cs
- GiveFeedbackEventArgs.cs
- DataGridViewRowsAddedEventArgs.cs
- ParallelDesigner.xaml.cs
- FontWeight.cs
- ApplicationGesture.cs
- TargetConverter.cs
- Interlocked.cs
- DataGridViewButtonColumn.cs
- XsdBuilder.cs
- NetworkAddressChange.cs
- Vector3DCollection.cs
- SettingsPropertyValue.cs
- FormatterServices.cs
- EdmRelationshipNavigationPropertyAttribute.cs
- CreateUserWizard.cs
- GlyphCache.cs
- UIElement3DAutomationPeer.cs
- SpecularMaterial.cs
- KeyInterop.cs
- WSIdentityFaultException.cs
- Label.cs
- OdbcParameter.cs
- MasterPageCodeDomTreeGenerator.cs
- PrintingPermissionAttribute.cs
- InvalidChannelBindingException.cs
- PageTheme.cs
- UIElement.cs
- TableLayoutRowStyleCollection.cs
- ImpersonationContext.cs
- ShaperBuffers.cs
- SAPICategories.cs
- RubberbandSelector.cs
- ISAPIWorkerRequest.cs
- Brushes.cs
- DataGridViewCellParsingEventArgs.cs
- CodeStatementCollection.cs
- ToolStripLocationCancelEventArgs.cs
- Asn1IntegerConverter.cs
- CommandDesigner.cs
- GridProviderWrapper.cs
- XmlBinaryWriter.cs
- DataGridViewElement.cs
- DataColumnChangeEvent.cs
- XmlUtf8RawTextWriter.cs
- Line.cs
- WindowsRebar.cs
- VisualTarget.cs