Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Globalization / TextElementEnumerator.cs / 1305376 / TextElementEnumerator.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //////////////////////////////////////////////////////////////////////////// // // Class: TextElementEnumerator // // Purpose: // // Date: [....] 31, 1999 // //////////////////////////////////////////////////////////////////////////// using System.Runtime.Serialization; namespace System.Globalization { using System.Collections; using System.Diagnostics.Contracts; // // This is public because GetTextElement() is public. // [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public class TextElementEnumerator: IEnumerator { private String str; private int index; private int startIndex; [NonSerialized] private int strLen; // This is the length of the total string, counting from the beginning of string. [NonSerialized] private int currTextElementLen; // The current text element lenght after MoveNext() is called. [OptionalField(VersionAdded = 2)] private UnicodeCategory uc; [OptionalField(VersionAdded = 2)] private int charLen; // The next abstract char to look at after MoveNext() is called. It could be 1 or 2, depending on if it is a surrogate or not. internal TextElementEnumerator(String str, int startIndex, int strLen) { Contract.Assert(str != null, "TextElementEnumerator(): str != null"); Contract.Assert(startIndex >= 0 && strLen >= 0, "TextElementEnumerator(): startIndex >= 0 && strLen >= 0"); Contract.Assert(strLen >= startIndex, "TextElementEnumerator(): strLen >= startIndex"); this.str = str; this.startIndex = startIndex; this.strLen = strLen; Reset(); } #region Serialization // the following fields is defined to keep the compatibility with Everett. // don't change/remove the names/types of these fields. private int endIndex; private int nextTextElementLen; [OnDeserializing] private void OnDeserializing(StreamingContext ctx) { charLen = -1; } [OnDeserialized] private void OnDeserialized(StreamingContext ctx) { strLen = endIndex + 1; currTextElementLen = nextTextElementLen; if (charLen == -1) { uc = CharUnicodeInfo.InternalGetUnicodeCategory(str, index, out charLen); } } [OnSerializing] private void OnSerializing(StreamingContext ctx) { endIndex = strLen - 1; nextTextElementLen = currTextElementLen; } #endregion Serialization [System.Security.SecuritySafeCritical] // auto-generated public bool MoveNext() { if (index >= strLen) { // Make the index to be greater than strLen so that we can throw exception if GetTextElement() is called. index = strLen + 1; return (false); } currTextElementLen = StringInfo.GetCurrentTextElementLen(str, index, strLen, ref uc, ref charLen); index += currTextElementLen; return (true); } // // Get the current text element. // public Object Current { get { return (GetTextElement()); } } // // Get the current text element. // public String GetTextElement() { if (index == startIndex) { throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_EnumNotStarted")); } if (index > strLen) { throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_EnumEnded")); } return (str.Substring(index - currTextElementLen, currTextElementLen)); } // // Get the starting index of the current text element. // public int ElementIndex { get { if (index == startIndex) { throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_EnumNotStarted")); } return (index - currTextElementLen); } } [System.Security.SecuritySafeCritical] // auto-generated public void Reset() { index = startIndex; if (index < strLen) { // If we have more than 1 character, get the category of the current char. uc = CharUnicodeInfo.InternalGetUnicodeCategory(str, index, out charLen); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //////////////////////////////////////////////////////////////////////////// // // Class: TextElementEnumerator // // Purpose: // // Date: [....] 31, 1999 // //////////////////////////////////////////////////////////////////////////// using System.Runtime.Serialization; namespace System.Globalization { using System.Collections; using System.Diagnostics.Contracts; // // This is public because GetTextElement() is public. // [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public class TextElementEnumerator: IEnumerator { private String str; private int index; private int startIndex; [NonSerialized] private int strLen; // This is the length of the total string, counting from the beginning of string. [NonSerialized] private int currTextElementLen; // The current text element lenght after MoveNext() is called. [OptionalField(VersionAdded = 2)] private UnicodeCategory uc; [OptionalField(VersionAdded = 2)] private int charLen; // The next abstract char to look at after MoveNext() is called. It could be 1 or 2, depending on if it is a surrogate or not. internal TextElementEnumerator(String str, int startIndex, int strLen) { Contract.Assert(str != null, "TextElementEnumerator(): str != null"); Contract.Assert(startIndex >= 0 && strLen >= 0, "TextElementEnumerator(): startIndex >= 0 && strLen >= 0"); Contract.Assert(strLen >= startIndex, "TextElementEnumerator(): strLen >= startIndex"); this.str = str; this.startIndex = startIndex; this.strLen = strLen; Reset(); } #region Serialization // the following fields is defined to keep the compatibility with Everett. // don't change/remove the names/types of these fields. private int endIndex; private int nextTextElementLen; [OnDeserializing] private void OnDeserializing(StreamingContext ctx) { charLen = -1; } [OnDeserialized] private void OnDeserialized(StreamingContext ctx) { strLen = endIndex + 1; currTextElementLen = nextTextElementLen; if (charLen == -1) { uc = CharUnicodeInfo.InternalGetUnicodeCategory(str, index, out charLen); } } [OnSerializing] private void OnSerializing(StreamingContext ctx) { endIndex = strLen - 1; nextTextElementLen = currTextElementLen; } #endregion Serialization [System.Security.SecuritySafeCritical] // auto-generated public bool MoveNext() { if (index >= strLen) { // Make the index to be greater than strLen so that we can throw exception if GetTextElement() is called. index = strLen + 1; return (false); } currTextElementLen = StringInfo.GetCurrentTextElementLen(str, index, strLen, ref uc, ref charLen); index += currTextElementLen; return (true); } // // Get the current text element. // public Object Current { get { return (GetTextElement()); } } // // Get the current text element. // public String GetTextElement() { if (index == startIndex) { throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_EnumNotStarted")); } if (index > strLen) { throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_EnumEnded")); } return (str.Substring(index - currTextElementLen, currTextElementLen)); } // // Get the starting index of the current text element. // public int ElementIndex { get { if (index == startIndex) { throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_EnumNotStarted")); } return (index - currTextElementLen); } } [System.Security.SecuritySafeCritical] // auto-generated public void Reset() { index = startIndex; if (index < strLen) { // If we have more than 1 character, get the category of the current char. uc = CharUnicodeInfo.InternalGetUnicodeCategory(str, index, out charLen); } } } } // 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
- PropertyPushdownHelper.cs
- Asn1IntegerConverter.cs
- Formatter.cs
- printdlgexmarshaler.cs
- FieldNameLookup.cs
- UpWmlPageAdapter.cs
- BindingSource.cs
- VariableAction.cs
- ResXResourceReader.cs
- StylusButton.cs
- Point3DValueSerializer.cs
- ReachFixedPageSerializerAsync.cs
- FlowDocumentReader.cs
- TypeReference.cs
- IpcManager.cs
- MaskedTextBoxDesignerActionList.cs
- TextServicesCompartmentContext.cs
- SoapMessage.cs
- TextProperties.cs
- JpegBitmapEncoder.cs
- CollectionContainer.cs
- ClientConfigurationHost.cs
- ClientBuildManagerCallback.cs
- Compiler.cs
- FlowchartStart.xaml.cs
- newinstructionaction.cs
- FixedDocument.cs
- WebPartEditorCancelVerb.cs
- Win32.cs
- PreviewPrintController.cs
- DetailsViewRow.cs
- DbInsertCommandTree.cs
- SizeAnimationUsingKeyFrames.cs
- WebPartTransformerAttribute.cs
- CommandCollectionEditor.cs
- InvalidOperationException.cs
- StartFileNameEditor.cs
- CodeGenerator.cs
- FixedPosition.cs
- EmptyElement.cs
- AdapterUtil.cs
- LockedBorderGlyph.cs
- StringValueSerializer.cs
- ByteKeyFrameCollection.cs
- ClrProviderManifest.cs
- CrossSiteScriptingValidation.cs
- MonitorWrapper.cs
- ProviderConnectionPoint.cs
- WindowsGrip.cs
- PagesSection.cs
- QuadraticBezierSegment.cs
- ClientProtocol.cs
- DefaultProxySection.cs
- DataGridViewSortCompareEventArgs.cs
- HtmlInputSubmit.cs
- SerializationInfoEnumerator.cs
- SoundPlayer.cs
- WizardPanelChangingEventArgs.cs
- CodeTypeDeclarationCollection.cs
- AmbiguousMatchException.cs
- BindStream.cs
- OdbcException.cs
- ReadOnlyObservableCollection.cs
- Int64Animation.cs
- DataServiceClientException.cs
- WriteableBitmap.cs
- cache.cs
- MdImport.cs
- ComboBox.cs
- ProcessHostMapPath.cs
- UsernameTokenFactoryCredential.cs
- PriorityItem.cs
- CommonRemoteMemoryBlock.cs
- AtomServiceDocumentSerializer.cs
- UnsafeNativeMethods.cs
- DelimitedListTraceListener.cs
- PropertyToken.cs
- ProtectedConfigurationProviderCollection.cs
- CompiledQueryCacheEntry.cs
- AddInEnvironment.cs
- documentsequencetextcontainer.cs
- MimeAnyImporter.cs
- ObjectDataSourceDisposingEventArgs.cs
- ExtractorMetadata.cs
- ChangeBlockUndoRecord.cs
- Trace.cs
- hwndwrapper.cs
- WinFormsSpinner.cs
- ImageDrawing.cs
- DateTimeValueSerializer.cs
- XmlComplianceUtil.cs
- QueryContinueDragEvent.cs
- PrintDialog.cs
- CanonicalFontFamilyReference.cs
- TransactionProxy.cs
- NumericUpDownAccelerationCollection.cs
- PieceNameHelper.cs
- DataSourceHelper.cs
- CodeSnippetTypeMember.cs
- RTLAwareMessageBox.cs