Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Compilation / ExpressionBuilder.cs / 1305376 / ExpressionBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.CodeDom; using System.Collections; using System.Collections.Specialized; using System.ComponentModel.Design; using System.Web.Configuration; using System.Reflection; using System.Web; using System.Web.Hosting; #if !FEATURE_PAL using System.Web.UI.Design; #endif // !FEATURE_PAL using System.Web.UI; using System.Web.Util; public abstract class ExpressionBuilder { private static ExpressionBuilder dataBindingExpressionBuilder; internal virtual void BuildExpression(BoundPropertyEntry bpe, ControlBuilder controlBuilder, CodeExpression controlReference, CodeStatementCollection methodStatements, CodeStatementCollection statements, CodeLinePragma linePragma, ref bool hasTempObject) { CodeExpression codeExpression = GetCodeExpression(bpe, bpe.ParsedExpressionData, new ExpressionBuilderContext(controlBuilder.VirtualPath)); CodeDomUtility.CreatePropertySetStatements(methodStatements, statements, controlReference, bpe.Name, bpe.Type, codeExpression, linePragma); } internal static ExpressionBuilder GetExpressionBuilder(string expressionPrefix, VirtualPath virtualPath) { return GetExpressionBuilder(expressionPrefix, virtualPath, null); } internal static ExpressionBuilder GetExpressionBuilder(string expressionPrefix, VirtualPath virtualPath, IDesignerHost host) { // If there is no expressionPrefix, it's a v1 style databinding expression if (expressionPrefix.Length == 0) { if (dataBindingExpressionBuilder == null) { dataBindingExpressionBuilder = new DataBindingExpressionBuilder(); } return dataBindingExpressionBuilder; } CompilationSection config = null; // If we are in the designer, we need to access IWebApplication config instead #if !FEATURE_PAL // FEATURE_PAL does not support designer-based features if (host != null) { IWebApplication webapp = (IWebApplication)host.GetService(typeof(IWebApplication)); if (webapp != null) { config = webapp.OpenWebConfiguration(true).GetSection("system.web/compilation") as CompilationSection; } } #endif // !FEATURE_PAL // If we failed to get config from the designer, fall back on runtime config always if (config == null) { config = MTConfigUtil.GetCompilationConfig(virtualPath); } System.Web.Configuration.ExpressionBuilder builder = config.ExpressionBuilders[expressionPrefix]; if (builder == null) { throw new HttpParseException(SR.GetString(SR.InvalidExpressionPrefix, expressionPrefix)); } Type expressionBuilderType = null; if (host != null) { // If we are in the designer, we have to use the type resolution service ITypeResolutionService ts = (ITypeResolutionService)host.GetService(typeof(ITypeResolutionService)); if (ts != null) { expressionBuilderType = ts.GetType(builder.Type); } } if (expressionBuilderType == null) { expressionBuilderType = builder.TypeInternal; } Debug.Assert(expressionBuilderType != null, "expressionBuilderType should not be null"); if (!typeof(ExpressionBuilder).IsAssignableFrom(expressionBuilderType)) { throw new HttpParseException(SR.GetString(SR.ExpressionBuilder_InvalidType, expressionBuilderType.FullName)); } ExpressionBuilder expressionBuilder = (ExpressionBuilder)HttpRuntime.FastCreatePublicInstance(expressionBuilderType); return expressionBuilder; } // // Public API // public virtual bool SupportsEvaluate { get { return false; } } public virtual object ParseExpression(string expression, Type propertyType, ExpressionBuilderContext context) { return null; } public abstract CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context); public virtual object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { return null; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.CodeDom; using System.Collections; using System.Collections.Specialized; using System.ComponentModel.Design; using System.Web.Configuration; using System.Reflection; using System.Web; using System.Web.Hosting; #if !FEATURE_PAL using System.Web.UI.Design; #endif // !FEATURE_PAL using System.Web.UI; using System.Web.Util; public abstract class ExpressionBuilder { private static ExpressionBuilder dataBindingExpressionBuilder; internal virtual void BuildExpression(BoundPropertyEntry bpe, ControlBuilder controlBuilder, CodeExpression controlReference, CodeStatementCollection methodStatements, CodeStatementCollection statements, CodeLinePragma linePragma, ref bool hasTempObject) { CodeExpression codeExpression = GetCodeExpression(bpe, bpe.ParsedExpressionData, new ExpressionBuilderContext(controlBuilder.VirtualPath)); CodeDomUtility.CreatePropertySetStatements(methodStatements, statements, controlReference, bpe.Name, bpe.Type, codeExpression, linePragma); } internal static ExpressionBuilder GetExpressionBuilder(string expressionPrefix, VirtualPath virtualPath) { return GetExpressionBuilder(expressionPrefix, virtualPath, null); } internal static ExpressionBuilder GetExpressionBuilder(string expressionPrefix, VirtualPath virtualPath, IDesignerHost host) { // If there is no expressionPrefix, it's a v1 style databinding expression if (expressionPrefix.Length == 0) { if (dataBindingExpressionBuilder == null) { dataBindingExpressionBuilder = new DataBindingExpressionBuilder(); } return dataBindingExpressionBuilder; } CompilationSection config = null; // If we are in the designer, we need to access IWebApplication config instead #if !FEATURE_PAL // FEATURE_PAL does not support designer-based features if (host != null) { IWebApplication webapp = (IWebApplication)host.GetService(typeof(IWebApplication)); if (webapp != null) { config = webapp.OpenWebConfiguration(true).GetSection("system.web/compilation") as CompilationSection; } } #endif // !FEATURE_PAL // If we failed to get config from the designer, fall back on runtime config always if (config == null) { config = MTConfigUtil.GetCompilationConfig(virtualPath); } System.Web.Configuration.ExpressionBuilder builder = config.ExpressionBuilders[expressionPrefix]; if (builder == null) { throw new HttpParseException(SR.GetString(SR.InvalidExpressionPrefix, expressionPrefix)); } Type expressionBuilderType = null; if (host != null) { // If we are in the designer, we have to use the type resolution service ITypeResolutionService ts = (ITypeResolutionService)host.GetService(typeof(ITypeResolutionService)); if (ts != null) { expressionBuilderType = ts.GetType(builder.Type); } } if (expressionBuilderType == null) { expressionBuilderType = builder.TypeInternal; } Debug.Assert(expressionBuilderType != null, "expressionBuilderType should not be null"); if (!typeof(ExpressionBuilder).IsAssignableFrom(expressionBuilderType)) { throw new HttpParseException(SR.GetString(SR.ExpressionBuilder_InvalidType, expressionBuilderType.FullName)); } ExpressionBuilder expressionBuilder = (ExpressionBuilder)HttpRuntime.FastCreatePublicInstance(expressionBuilderType); return expressionBuilder; } // // Public API // public virtual bool SupportsEvaluate { get { return false; } } public virtual object ParseExpression(string expression, Type propertyType, ExpressionBuilderContext context) { return null; } public abstract CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context); public virtual object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context) { return null; } } } // 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
- ComponentCommands.cs
- CleanUpVirtualizedItemEventArgs.cs
- MinimizableAttributeTypeConverter.cs
- SRGSCompiler.cs
- BaseValidator.cs
- DropShadowBitmapEffect.cs
- SqlMethodCallConverter.cs
- RoleGroup.cs
- RayMeshGeometry3DHitTestResult.cs
- GZipStream.cs
- DomainConstraint.cs
- HelpKeywordAttribute.cs
- CollectionViewSource.cs
- TraceXPathNavigator.cs
- WebPartChrome.cs
- GridViewRowPresenter.cs
- DecimalStorage.cs
- DataControlFieldCollection.cs
- DependencyObject.cs
- BulletDecorator.cs
- EncryptedKeyHashIdentifierClause.cs
- LabelLiteral.cs
- FragmentQueryKB.cs
- SizeConverter.cs
- RectangleHotSpot.cs
- BindStream.cs
- CaretElement.cs
- BaseTransportHeaders.cs
- MultiAsyncResult.cs
- ObjectHelper.cs
- TypeSystem.cs
- SparseMemoryStream.cs
- PeerNameRecordCollection.cs
- GeometryCollection.cs
- ECDiffieHellman.cs
- RelationshipNavigation.cs
- WebPartZoneBaseDesigner.cs
- SQLInt16.cs
- PopupRoot.cs
- SqlDataSourceCache.cs
- WindowsToolbarAsMenu.cs
- FacetValues.cs
- ContextProperty.cs
- DataSysAttribute.cs
- ConfigurationFileMap.cs
- XmlElementAttribute.cs
- InstanceNameConverter.cs
- MetadataCache.cs
- PathNode.cs
- RemotingServices.cs
- ActivationServices.cs
- PeerCustomResolverSettings.cs
- ZipIOFileItemStream.cs
- RtfToken.cs
- TokenCreationException.cs
- TimeEnumHelper.cs
- Pair.cs
- GenericParameterDataContract.cs
- DataControlFieldsEditor.cs
- PartialCachingControl.cs
- FormViewDesigner.cs
- Expressions.cs
- DataRowChangeEvent.cs
- DecoderBestFitFallback.cs
- StrongBox.cs
- QilGenerator.cs
- CodeMemberEvent.cs
- ArrayWithOffset.cs
- AmbientValueAttribute.cs
- TableItemPattern.cs
- ToolStripOverflow.cs
- MenuItemBinding.cs
- ImageListDesigner.cs
- assemblycache.cs
- ValidationEventArgs.cs
- RemotingConfigParser.cs
- DocumentXPathNavigator.cs
- ComboBoxRenderer.cs
- SqlBuilder.cs
- CommonDialog.cs
- MenuEventArgs.cs
- RC2.cs
- DBCommand.cs
- HealthMonitoringSectionHelper.cs
- ButtonColumn.cs
- WebEventTraceProvider.cs
- SimpleRecyclingCache.cs
- DesignerDeviceConfig.cs
- DynamicDocumentPaginator.cs
- PolyBezierSegment.cs
- KnownIds.cs
- TextEditorSpelling.cs
- Touch.cs
- ObjectStateEntryBaseUpdatableDataRecord.cs
- WebBaseEventKeyComparer.cs
- _RequestCacheProtocol.cs
- SafeLocalAllocation.cs
- TableSectionStyle.cs
- EntitySqlQueryCacheKey.cs
- updatecommandorderer.cs