Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataEntity / System / Data / Common / Utils / Boolean / Vertex.cs / 1 / Vertex.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; namespace System.Data.Common.Utils.Boolean { using System.Diagnostics; using System.Globalization; ////// A node in a Reduced Ordered Boolean Decision Diagram. Reads as: /// /// if 'Variable' then 'Then' else 'Else' /// /// Invariant: the Then and Else children must refer to 'deeper' variables, /// or variables with a higher value. Otherwise, the graph is not 'Ordered'. /// All creation of vertices is mediated by the Solver class which ensures /// each vertex is unique. Otherwise, the graph is not 'Reduced'. /// sealed class Vertex : IEquatable{ /// /// Initializes a sink BDD node (zero or one) /// private Vertex() { this.Variable = int.MaxValue; this.Children = new Vertex[] { }; } internal Vertex(int variable, Vertex[] children) { EntityUtil.BoolExprAssert(variable < int.MaxValue, "exceeded number of supported variables"); AssertConstructorArgumentsValid(variable, children); this.Variable = variable; this.Children = children; } [Conditional("DEBUG")] private static void AssertConstructorArgumentsValid(int variable, Vertex[] children) { Debug.Assert(null != children, "internal vertices must define children"); Debug.Assert(2 <= children.Length, "internal vertices must have at least two children"); Debug.Assert(0 < variable, "internal vertices must have 0 < variable"); foreach (Vertex child in children) { Debug.Assert(variable < child.Variable, "children must have greater variable"); } } ////// Sink node representing the Boolean function '1' (true) /// internal static readonly Vertex One = new Vertex(); ////// Sink node representing the Boolean function '0' (false) /// internal static readonly Vertex Zero = new Vertex(); ////// Gets the variable tested by this vertex. If this is a sink node, returns /// int.MaxValue since there is no variable to test (and since this is a leaf, /// this non-existent variable is 'deeper' than any existing variable; the /// variable value is larger than any real variable) /// internal readonly int Variable; ////// Note: do not modify elements. /// Gets the result when Variable evaluates to true. If this is a sink node, /// returns null. /// internal readonly Vertex[] Children; ////// Returns true if this is '1'. /// internal bool IsOne() { return object.ReferenceEquals(Vertex.One, this); } ////// Returns true if this is '0'. /// internal bool IsZero() { return object.ReferenceEquals(Vertex.Zero, this); } ////// Returns true if this is '0' or '1'. /// internal bool IsSink() { return Variable == int.MaxValue; } public bool Equals(Vertex other) { return object.ReferenceEquals(this, other); } public override bool Equals(object obj) { Debug.Fail("used typed Equals"); return base.Equals(obj); } public override int GetHashCode() { return base.GetHashCode(); } public override string ToString() { if (IsOne()) { return "_1_"; } if (IsZero()) { return "_0_"; } return String.Format(CultureInfo.InvariantCulture, "<{0}, {1}>", Variable, StringUtil.ToCommaSeparatedString(Children)); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; namespace System.Data.Common.Utils.Boolean { using System.Diagnostics; using System.Globalization; ////// A node in a Reduced Ordered Boolean Decision Diagram. Reads as: /// /// if 'Variable' then 'Then' else 'Else' /// /// Invariant: the Then and Else children must refer to 'deeper' variables, /// or variables with a higher value. Otherwise, the graph is not 'Ordered'. /// All creation of vertices is mediated by the Solver class which ensures /// each vertex is unique. Otherwise, the graph is not 'Reduced'. /// sealed class Vertex : IEquatable{ /// /// Initializes a sink BDD node (zero or one) /// private Vertex() { this.Variable = int.MaxValue; this.Children = new Vertex[] { }; } internal Vertex(int variable, Vertex[] children) { EntityUtil.BoolExprAssert(variable < int.MaxValue, "exceeded number of supported variables"); AssertConstructorArgumentsValid(variable, children); this.Variable = variable; this.Children = children; } [Conditional("DEBUG")] private static void AssertConstructorArgumentsValid(int variable, Vertex[] children) { Debug.Assert(null != children, "internal vertices must define children"); Debug.Assert(2 <= children.Length, "internal vertices must have at least two children"); Debug.Assert(0 < variable, "internal vertices must have 0 < variable"); foreach (Vertex child in children) { Debug.Assert(variable < child.Variable, "children must have greater variable"); } } ////// Sink node representing the Boolean function '1' (true) /// internal static readonly Vertex One = new Vertex(); ////// Sink node representing the Boolean function '0' (false) /// internal static readonly Vertex Zero = new Vertex(); ////// Gets the variable tested by this vertex. If this is a sink node, returns /// int.MaxValue since there is no variable to test (and since this is a leaf, /// this non-existent variable is 'deeper' than any existing variable; the /// variable value is larger than any real variable) /// internal readonly int Variable; ////// Note: do not modify elements. /// Gets the result when Variable evaluates to true. If this is a sink node, /// returns null. /// internal readonly Vertex[] Children; ////// Returns true if this is '1'. /// internal bool IsOne() { return object.ReferenceEquals(Vertex.One, this); } ////// Returns true if this is '0'. /// internal bool IsZero() { return object.ReferenceEquals(Vertex.Zero, this); } ////// Returns true if this is '0' or '1'. /// internal bool IsSink() { return Variable == int.MaxValue; } public bool Equals(Vertex other) { return object.ReferenceEquals(this, other); } public override bool Equals(object obj) { Debug.Fail("used typed Equals"); return base.Equals(obj); } public override int GetHashCode() { return base.GetHashCode(); } public override string ToString() { if (IsOne()) { return "_1_"; } if (IsZero()) { return "_0_"; } return String.Format(CultureInfo.InvariantCulture, "<{0}, {1}>", Variable, StringUtil.ToCommaSeparatedString(Children)); } } } // 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
- ToolBarButton.cs
- CategoryGridEntry.cs
- ClosableStream.cs
- EditingCommands.cs
- TitleStyle.cs
- DetailsViewDeleteEventArgs.cs
- sqlser.cs
- RSAPKCS1KeyExchangeFormatter.cs
- WebPartMovingEventArgs.cs
- ByteAnimation.cs
- DeflateStreamAsyncResult.cs
- VisualBasicImportReference.cs
- ApplicationFileCodeDomTreeGenerator.cs
- MemoryMappedView.cs
- Baml6ConstructorInfo.cs
- SettingsSavedEventArgs.cs
- ChangePassword.cs
- HwndSourceParameters.cs
- ReflectPropertyDescriptor.cs
- SRGSCompiler.cs
- ConfigurationStrings.cs
- OletxEnlistment.cs
- SourceItem.cs
- Enum.cs
- LineUtil.cs
- EntityModelSchemaGenerator.cs
- OleDbPropertySetGuid.cs
- BamlTreeUpdater.cs
- TextShapeableCharacters.cs
- JsonGlobals.cs
- Variant.cs
- ConfigurationManager.cs
- CompositeDataBoundControl.cs
- entitydatasourceentitysetnameconverter.cs
- CellPartitioner.cs
- LicenseException.cs
- ClientFormsIdentity.cs
- ObjectCloneHelper.cs
- XmlTextAttribute.cs
- KeyToListMap.cs
- VideoDrawing.cs
- SecureUICommand.cs
- ElementProxy.cs
- TrackingWorkflowEventArgs.cs
- XmlMemberMapping.cs
- IPCCacheManager.cs
- SqlExpander.cs
- EastAsianLunisolarCalendar.cs
- DynamicDataRouteHandler.cs
- DesignerSerializerAttribute.cs
- ContainerUtilities.cs
- Set.cs
- StreamInfo.cs
- DynamicResourceExtensionConverter.cs
- DataSourceProvider.cs
- QueryOutputWriter.cs
- JapaneseLunisolarCalendar.cs
- SortAction.cs
- NetMsmqSecurityMode.cs
- TemplateParser.cs
- SQLBoolean.cs
- DataGridColumnCollectionEditor.cs
- RegexCapture.cs
- ApplicationHost.cs
- QuotedPrintableStream.cs
- DataGridViewCellEventArgs.cs
- ObjectDataSourceEventArgs.cs
- FormClosingEvent.cs
- SecurityPolicySection.cs
- SecurityRuntime.cs
- HtmlShimManager.cs
- SymbolType.cs
- StylusPointDescription.cs
- ResourcePool.cs
- FieldBuilder.cs
- DataTransferEventArgs.cs
- ImportOptions.cs
- ToolBarButton.cs
- CornerRadiusConverter.cs
- SignedXml.cs
- MemberHolder.cs
- StandardBindingCollectionElement.cs
- GlyphInfoList.cs
- PartEditor.cs
- ReaderWriterLock.cs
- StateMachine.cs
- InstanceDataCollection.cs
- SelectionChangedEventArgs.cs
- DynamicILGenerator.cs
- MethodBuilder.cs
- OracleRowUpdatedEventArgs.cs
- SkinBuilder.cs
- MessageAction.cs
- ControlBuilder.cs
- XmlC14NWriter.cs
- PrintDialogException.cs
- QilList.cs
- MetaData.cs
- COM2IPerPropertyBrowsingHandler.cs
- DesignSurfaceCollection.cs