Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / 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
- ComponentCollection.cs
- InternalsVisibleToAttribute.cs
- ItemsControl.cs
- _AutoWebProxyScriptHelper.cs
- OracleBFile.cs
- CompensableActivity.cs
- ScriptHandlerFactory.cs
- PenThreadWorker.cs
- FixedDocumentSequencePaginator.cs
- SoapAttributeAttribute.cs
- MatrixUtil.cs
- MDIWindowDialog.cs
- WrapPanel.cs
- MetadataArtifactLoaderCompositeFile.cs
- JournalEntryStack.cs
- MarshalByRefObject.cs
- MembershipUser.cs
- EmptyEnumerator.cs
- InfoCardRSAOAEPKeyExchangeDeformatter.cs
- RequestCacheEntry.cs
- CodeDomDecompiler.cs
- TypeDescriptor.cs
- BindingWorker.cs
- ConsoleTraceListener.cs
- Maps.cs
- ConfigXmlSignificantWhitespace.cs
- Attributes.cs
- OledbConnectionStringbuilder.cs
- AnnotationComponentManager.cs
- DriveNotFoundException.cs
- RuntimeHandles.cs
- ContentPresenter.cs
- ProcessActivityTreeOptions.cs
- OneToOneMappingSerializer.cs
- Comparer.cs
- StylusTip.cs
- CallbackValidatorAttribute.cs
- TrackPointCollection.cs
- AccessControlEntry.cs
- SessionIDManager.cs
- ActivityExecutor.cs
- GroupItem.cs
- ReaderOutput.cs
- TypeSemantics.cs
- CodeExporter.cs
- MsmqInputMessage.cs
- UserPreference.cs
- Control.cs
- _ListenerAsyncResult.cs
- SettingsContext.cs
- WebPartZoneCollection.cs
- SoundPlayer.cs
- PropertyGridEditorPart.cs
- DESCryptoServiceProvider.cs
- JsonSerializer.cs
- IgnoreDeviceFilterElement.cs
- BamlTreeMap.cs
- ImageList.cs
- ScriptingWebServicesSectionGroup.cs
- DetailsViewDeleteEventArgs.cs
- CodeDomExtensionMethods.cs
- ContentControl.cs
- DesignerLabelAdapter.cs
- XmlArrayItemAttribute.cs
- AnnotationResourceCollection.cs
- CallbackValidator.cs
- ArraySet.cs
- PackageDigitalSignatureManager.cs
- IPPacketInformation.cs
- TdsParserSessionPool.cs
- Material.cs
- UdpTransportSettings.cs
- ComPlusTypeValidator.cs
- OneWayChannelListener.cs
- AsymmetricSignatureDeformatter.cs
- HttpFileCollection.cs
- MarkupCompilePass1.cs
- SafeHandle.cs
- SchemaSetCompiler.cs
- LocatorPartList.cs
- SqlParameter.cs
- HMACSHA384.cs
- AssemblyFilter.cs
- TextElementEnumerator.cs
- OdbcDataReader.cs
- UrlMappingCollection.cs
- SessionStateModule.cs
- DataQuery.cs
- DataReaderContainer.cs
- SynchronizationHandlesCodeDomSerializer.cs
- FontNameConverter.cs
- precedingsibling.cs
- Socket.cs
- SpellerError.cs
- EventDescriptorCollection.cs
- WriteableOnDemandPackagePart.cs
- InternalPermissions.cs
- EntityKeyElement.cs
- Simplifier.cs
- CatalogZoneDesigner.cs