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
- WindowsSolidBrush.cs
- NonNullItemCollection.cs
- HashLookup.cs
- BamlVersionHeader.cs
- MetricEntry.cs
- SoapSchemaMember.cs
- TypeLibraryHelper.cs
- DesignerActionVerbItem.cs
- DataGridViewRowConverter.cs
- UnsafeNativeMethods.cs
- SQLByteStorage.cs
- FixedMaxHeap.cs
- InstanceDescriptor.cs
- VersionPair.cs
- ThousandthOfEmRealPoints.cs
- Enum.cs
- WebBrowser.cs
- PrePostDescendentsWalker.cs
- DataGridParentRows.cs
- BitmapSource.cs
- InteropBitmapSource.cs
- _RequestCacheProtocol.cs
- ImageBrush.cs
- DurationConverter.cs
- ProjectionPruner.cs
- DefaultEventAttribute.cs
- DbConvert.cs
- AssemblyBuilder.cs
- FormsAuthenticationCredentials.cs
- KerberosTicketHashIdentifierClause.cs
- Constraint.cs
- EntityUtil.cs
- HighlightComponent.cs
- HMACSHA384.cs
- Decoder.cs
- HeaderedItemsControl.cs
- OracleMonthSpan.cs
- ActivityExecutionContext.cs
- DataViewSetting.cs
- EncryptedData.cs
- WSSecurityXXX2005.cs
- ListViewTableRow.cs
- ClientData.cs
- ObjectItemCachedAssemblyLoader.cs
- CodeNamespace.cs
- ManagementOperationWatcher.cs
- UserMapPath.cs
- RegistryPermission.cs
- Calendar.cs
- DataGridViewTextBoxCell.cs
- EmbeddedMailObjectsCollection.cs
- LayoutEvent.cs
- SapiGrammar.cs
- SafeRightsManagementQueryHandle.cs
- HttpApplication.cs
- EmptyImpersonationContext.cs
- HtmlShimManager.cs
- ActiveXContainer.cs
- XmlMemberMapping.cs
- DelegatingTypeDescriptionProvider.cs
- VirtualPathProvider.cs
- StringValidator.cs
- UnaryNode.cs
- SafeNativeMethodsOther.cs
- VirtualizedItemProviderWrapper.cs
- TimeSpanSecondsConverter.cs
- InstanceData.cs
- SchemaExporter.cs
- SequenceNumber.cs
- ControlAdapter.cs
- MetadataPropertyCollection.cs
- ControlParameter.cs
- SqlConnectionStringBuilder.cs
- _HelperAsyncResults.cs
- ForeignConstraint.cs
- Error.cs
- CodeCatchClauseCollection.cs
- ExpressionPrefixAttribute.cs
- elementinformation.cs
- AspNetSynchronizationContext.cs
- TraceListener.cs
- InfoCardRSAPKCS1SignatureFormatter.cs
- ListViewGroup.cs
- AppSettingsReader.cs
- DurableInstanceContextProvider.cs
- SequentialOutput.cs
- X509IssuerSerialKeyIdentifierClause.cs
- CacheRequest.cs
- BaseCodeDomTreeGenerator.cs
- OdbcEnvironment.cs
- DateTimeConstantAttribute.cs
- DrawListViewColumnHeaderEventArgs.cs
- DeferrableContentConverter.cs
- RequestSecurityTokenSerializer.cs
- WindowsScroll.cs
- DesigntimeLicenseContextSerializer.cs
- RichTextBox.cs
- OleDbConnectionFactory.cs
- AutomationIdentifierGuids.cs
- AnnotationAuthorChangedEventArgs.cs