Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / Microsoft / Scripting / Utils / TypeExtensions.cs / 1305376 / TypeExtensions.cs
/* **************************************************************************** * * Copyright (c) Microsoft Corporation. * * This source code is subject to terms and conditions of the Microsoft Public License. A * copy of the license can be found in the License.html file at the root of this distribution. If * you cannot locate the Microsoft Public License, please send an email to * dlr@microsoft.com. By using this source code in any fashion, you are agreeing to be bound * by the terms of the Microsoft Public License. * * You must not remove this notice, or any other, from this software. * * * ***************************************************************************/ using System.Diagnostics; using System.Reflection; using System.Reflection.Emit; using System.Text; namespace System.Dynamic.Utils { // Extensions on System.Type and friends internal static class TypeExtensions { ////// Creates an open delegate for the given (dynamic)method. /// internal static Delegate CreateDelegate(this MethodInfo methodInfo, Type delegateType) { Debug.Assert(methodInfo != null && delegateType != null); var dm = methodInfo as DynamicMethod; if (dm != null) { return dm.CreateDelegate(delegateType); } else { return Delegate.CreateDelegate(delegateType, methodInfo); } } ////// Creates a closed delegate for the given (dynamic)method. /// internal static Delegate CreateDelegate(this MethodInfo methodInfo, Type delegateType, object target) { Debug.Assert(methodInfo != null && delegateType != null); var dm = methodInfo as DynamicMethod; if (dm != null) { return dm.CreateDelegate(delegateType, target); } else { return Delegate.CreateDelegate(delegateType, target, methodInfo); } } internal static Type GetReturnType(this MethodBase mi) { return (mi.IsConstructor) ? mi.DeclaringType : ((MethodInfo)mi).ReturnType; } private static readonly CacheDict_ParamInfoCache = new CacheDict (75); internal static ParameterInfo[] GetParametersCached(this MethodBase method) { ParameterInfo[] pis; lock (_ParamInfoCache) { if (!_ParamInfoCache.TryGetValue(method, out pis)) { pis = method.GetParameters(); Type t = method.DeclaringType; if (t != null && TypeUtils.CanCache(t)) { _ParamInfoCache[method] = pis; } } } return pis; } // Expression trees/compiler just use IsByRef, why do we need this? // (see LambdaCompiler.EmitArguments for usage in the compiler) internal static bool IsByRefParameter(this ParameterInfo pi) { // not using IsIn/IsOut properties as they are not available in Silverlight: if (pi.ParameterType.IsByRef) return true; return (pi.Attributes & (ParameterAttributes.Out)) == ParameterAttributes.Out; } // Returns the matching method if the parameter types are reference // assignable from the provided type arguments, otherwise null. internal static MethodInfo GetMethodValidated( this Type type, string name, BindingFlags bindingAttr, Binder binder, Type[] types, ParameterModifier[] modifiers) { var method = type.GetMethod(name, bindingAttr, binder, types, modifiers); return method.MatchesArgumentTypes(types) ? method : null; } /// /// Returns true if the method's parameter types are reference assignable from /// the argument types, otherwise false. /// /// An example that can make the method return false is that /// typeof(double).GetMethod("op_Equality", ..., new[] { typeof(double), typeof(int) }) /// returns a method with two double parameters, which doesn't match the provided /// argument types. /// ///private static bool MatchesArgumentTypes(this MethodInfo mi, Type[] argTypes) { if (mi == null || argTypes == null) { return false; } var ps = mi.GetParameters(); if (ps.Length != argTypes.Length) { return false; } for (int i = 0; i < ps.Length; i++) { if (!TypeUtils.AreReferenceAssignable(ps[i].ParameterType, argTypes[i])) { return false; } } return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Rule.cs
- DynamicEndpoint.cs
- FormsAuthenticationCredentials.cs
- ObjectCloneHelper.cs
- XslCompiledTransform.cs
- UICuesEvent.cs
- serverconfig.cs
- StringConverter.cs
- InputManager.cs
- DataGridViewRowPrePaintEventArgs.cs
- PrintDialogException.cs
- DrawingCollection.cs
- InteropBitmapSource.cs
- TypeSystem.cs
- DataKey.cs
- ClientConfigurationHost.cs
- GZipUtils.cs
- FlowDocumentReader.cs
- SchemaAttDef.cs
- BrushValueSerializer.cs
- CounterCreationDataCollection.cs
- TextViewBase.cs
- SafeNativeMethods.cs
- ButtonColumn.cs
- ImageSourceConverter.cs
- StylusPointPropertyUnit.cs
- CustomAttributeSerializer.cs
- DecodeHelper.cs
- SqlInternalConnectionSmi.cs
- RawStylusInputCustomData.cs
- WindowsScrollBarBits.cs
- LiteralTextParser.cs
- PrefixQName.cs
- BaseTemplateCodeDomTreeGenerator.cs
- CryptoProvider.cs
- EntityContainer.cs
- FixedDSBuilder.cs
- XsdDataContractImporter.cs
- PropertyInfoSet.cs
- DynamicDiscoSearcher.cs
- BrushMappingModeValidation.cs
- __FastResourceComparer.cs
- SafeBitVector32.cs
- MatrixTransform3D.cs
- CheckBoxField.cs
- MissingManifestResourceException.cs
- GlobalizationAssembly.cs
- DispatchProxy.cs
- Fonts.cs
- DataGridViewRowEventArgs.cs
- ParameterElementCollection.cs
- KeySplineConverter.cs
- Number.cs
- SessionEndingCancelEventArgs.cs
- EditorZoneBase.cs
- CustomErrorCollection.cs
- QueryableDataSourceView.cs
- GuidelineCollection.cs
- DrawingContextDrawingContextWalker.cs
- OdbcEnvironmentHandle.cs
- SimpleBitVector32.cs
- InstanceValue.cs
- HttpCacheParams.cs
- SerializableAttribute.cs
- Statements.cs
- DATA_BLOB.cs
- DataListCommandEventArgs.cs
- TextSegment.cs
- EntityContainer.cs
- ConfigXmlText.cs
- CodeAttributeDeclaration.cs
- ConfigurationStrings.cs
- SqlUtil.cs
- SchemaCreator.cs
- SchemaCollectionPreprocessor.cs
- SQLBytes.cs
- OperationFormatter.cs
- _AutoWebProxyScriptWrapper.cs
- WebSysDescriptionAttribute.cs
- UpDownBaseDesigner.cs
- AuthorizationSection.cs
- EdmSchemaError.cs
- EastAsianLunisolarCalendar.cs
- WebReferenceCollection.cs
- DataGridViewRowStateChangedEventArgs.cs
- TextDpi.cs
- QuinticEase.cs
- returneventsaver.cs
- RawMouseInputReport.cs
- XsltSettings.cs
- XsltCompileContext.cs
- ConnectivityStatus.cs
- QueryConverter.cs
- SrgsGrammarCompiler.cs
- X509RawDataKeyIdentifierClause.cs
- System.Data_BID.cs
- DockProviderWrapper.cs
- CompressEmulationStream.cs
- PathData.cs
- TextServicesPropertyRanges.cs