Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Xml / System / Xml / XPath / Internal / BooleanFunctions.cs / 1 / BooleanFunctions.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 FT = MS.Internal.Xml.XPath.Function.FunctionType; internal sealed class BooleanFunctions : ValueQuery { Query arg; FT funcType; public BooleanFunctions(FT funcType, Query arg) { this.arg = arg; this.funcType = funcType; } private BooleanFunctions(BooleanFunctions other) : base(other) { this.arg = Clone(other.arg); this.funcType = other.funcType; } public override void SetXsltContext(XsltContext context) { if (arg != null) { arg.SetXsltContext(context); } } public override object Evaluate(XPathNodeIterator nodeIterator) { switch (funcType) { case FT.FuncBoolean : return toBoolean(nodeIterator); case FT.FuncNot : return Not(nodeIterator); case FT.FuncTrue : return true; case FT.FuncFalse : return false; case FT.FuncLang : return Lang(nodeIterator); } return false; } internal static bool toBoolean(double number) { return number != 0 && ! double.IsNaN(number); } internal static bool toBoolean(string str) { return str.Length > 0; } internal bool toBoolean(XPathNodeIterator nodeIterator) { object result = arg.Evaluate(nodeIterator); if (result is XPathNodeIterator) return arg.Advance() != null; if (result is string ) return toBoolean((string)result); if (result is double ) return toBoolean((double)result); if (result is bool ) return (bool)result; Debug.Assert(result is XPathNavigator, "Unknown value type"); return true; } public override XPathResultType StaticType { get { return XPathResultType.Boolean; } } private bool Not(XPathNodeIterator nodeIterator) { return ! (bool) arg.Evaluate(nodeIterator); } private bool Lang(XPathNodeIterator nodeIterator) { string str = arg.Evaluate(nodeIterator).ToString(); string lang = nodeIterator.Current.XmlLang; return ( lang.StartsWith(str, StringComparison.OrdinalIgnoreCase) && (lang.Length == str.Length || lang[str.Length] == '-') ); } public override XPathNodeIterator Clone() { return new BooleanFunctions(this); } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); w.WriteAttributeString("name", funcType.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. // //[....] //----------------------------------------------------------------------------- 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 FT = MS.Internal.Xml.XPath.Function.FunctionType; internal sealed class BooleanFunctions : ValueQuery { Query arg; FT funcType; public BooleanFunctions(FT funcType, Query arg) { this.arg = arg; this.funcType = funcType; } private BooleanFunctions(BooleanFunctions other) : base(other) { this.arg = Clone(other.arg); this.funcType = other.funcType; } public override void SetXsltContext(XsltContext context) { if (arg != null) { arg.SetXsltContext(context); } } public override object Evaluate(XPathNodeIterator nodeIterator) { switch (funcType) { case FT.FuncBoolean : return toBoolean(nodeIterator); case FT.FuncNot : return Not(nodeIterator); case FT.FuncTrue : return true; case FT.FuncFalse : return false; case FT.FuncLang : return Lang(nodeIterator); } return false; } internal static bool toBoolean(double number) { return number != 0 && ! double.IsNaN(number); } internal static bool toBoolean(string str) { return str.Length > 0; } internal bool toBoolean(XPathNodeIterator nodeIterator) { object result = arg.Evaluate(nodeIterator); if (result is XPathNodeIterator) return arg.Advance() != null; if (result is string ) return toBoolean((string)result); if (result is double ) return toBoolean((double)result); if (result is bool ) return (bool)result; Debug.Assert(result is XPathNavigator, "Unknown value type"); return true; } public override XPathResultType StaticType { get { return XPathResultType.Boolean; } } private bool Not(XPathNodeIterator nodeIterator) { return ! (bool) arg.Evaluate(nodeIterator); } private bool Lang(XPathNodeIterator nodeIterator) { string str = arg.Evaluate(nodeIterator).ToString(); string lang = nodeIterator.Current.XmlLang; return ( lang.StartsWith(str, StringComparison.OrdinalIgnoreCase) && (lang.Length == str.Length || lang[str.Length] == '-') ); } public override XPathNodeIterator Clone() { return new BooleanFunctions(this); } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); w.WriteAttributeString("name", funcType.ToString()); if (arg != null) { arg.PrintQuery(w); } w.WriteEndElement(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- JoinSymbol.cs
- HttpTransportManager.cs
- Transaction.cs
- ColorEditor.cs
- Compiler.cs
- ActionNotSupportedException.cs
- _IPv4Address.cs
- DynamicRenderer.cs
- MatrixUtil.cs
- SourceFileBuildProvider.cs
- DataBindingExpressionBuilder.cs
- ParameterCollectionEditor.cs
- ServiceDiscoveryElement.cs
- ToolBar.cs
- JsonMessageEncoderFactory.cs
- MetadataArtifactLoader.cs
- OutputCacheModule.cs
- embossbitmapeffect.cs
- InternalSafeNativeMethods.cs
- SqlNotificationRequest.cs
- HoistedLocals.cs
- ChannelManager.cs
- Native.cs
- CmsInterop.cs
- NumberFormatter.cs
- XmlFormatExtensionAttribute.cs
- GenericQueueSurrogate.cs
- LocalsItemDescription.cs
- StaticExtensionConverter.cs
- DeobfuscatingStream.cs
- CodeTypeParameterCollection.cs
- EventLogEntry.cs
- cookiecollection.cs
- DataGridClipboardHelper.cs
- PathGeometry.cs
- NameValueFileSectionHandler.cs
- ArrayList.cs
- ELinqQueryState.cs
- DataGridViewAutoSizeColumnModeEventArgs.cs
- AddressingProperty.cs
- GridEntryCollection.cs
- ManagedFilter.cs
- SelectorAutomationPeer.cs
- ListDictionaryInternal.cs
- Debug.cs
- CodeMemberEvent.cs
- BindingManagerDataErrorEventArgs.cs
- SrgsText.cs
- MatcherBuilder.cs
- CompositeCollection.cs
- DesignTimeResourceProviderFactoryAttribute.cs
- ScriptManagerProxy.cs
- Speller.cs
- TableItemStyle.cs
- HMACSHA256.cs
- DataStreamFromComStream.cs
- TrustSection.cs
- DebugHandleTracker.cs
- Int64Animation.cs
- WebBodyFormatMessageProperty.cs
- SqlDependencyUtils.cs
- FormatConvertedBitmap.cs
- ClassHandlersStore.cs
- DeflateStream.cs
- PackageRelationship.cs
- TrackingRecord.cs
- ErrorRuntimeConfig.cs
- HttpProxyCredentialType.cs
- ControlParameter.cs
- NativeMethods.cs
- RunInstallerAttribute.cs
- XmlSortKeyAccumulator.cs
- TreeIterators.cs
- XmlAnyAttributeAttribute.cs
- EntityDataSourceEntitySetNameItem.cs
- User.cs
- GeneralTransformGroup.cs
- SchemaTableOptionalColumn.cs
- Peer.cs
- Brush.cs
- DependencyPropertyKey.cs
- TextEndOfParagraph.cs
- DataBindingList.cs
- CaseCqlBlock.cs
- TextAnchor.cs
- CodeAttachEventStatement.cs
- SequenceNumber.cs
- PersonalizableTypeEntry.cs
- MetafileHeaderWmf.cs
- TransformGroup.cs
- WebPartsPersonalizationAuthorization.cs
- QueryContinueDragEvent.cs
- WpfPayload.cs
- DataGridViewColumnConverter.cs
- StrongNameIdentityPermission.cs
- CurrentChangedEventManager.cs
- MessageUtil.cs
- PolicyException.cs
- DescriptionAttribute.cs
- _ProxyRegBlob.cs