Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Common / DelegateTypeInfo.cs / 1305376 / DelegateTypeInfo.cs
// Copyright (c) Microsoft Corporation. All rights reserved. // // THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, // WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED // WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. // THE ENTIRE RISK OF USE OR RESULTS IN CONNECTION WITH THE USE OF THIS CODE // AND INFORMATION REMAINS WITH THE USER. // /********************************************************************** * NOTE: A copy of this file exists at: WF\Common\Shared * The two files must be kept in [....]. Any change made here must also * be made to WF\Common\Shared\DelegateTypeInfo.cs *********************************************************************/ namespace System.Workflow.Activities.Common { using System; using System.CodeDom; using System.Collections; using System.Globalization; using System.ComponentModel; using System.ComponentModel.Design; using System.Reflection; using System.Diagnostics.CodeAnalysis; internal class DelegateTypeInfo { private CodeParameterDeclarationExpression[] parameters; private Type[] parameterTypes; private CodeTypeReference returnType; internal CodeParameterDeclarationExpression[] Parameters { get { return parameters; } } internal Type[] ParameterTypes { get { return parameterTypes; } } internal CodeTypeReference ReturnType { get { return returnType; } } internal DelegateTypeInfo(Type delegateClass) { Resolve(delegateClass); } [SuppressMessage("Microsoft.Globalization", "CA1307:SpecifyStringComparison", Justification = "EndsWith(\"&\") not a security issue.")] private void Resolve(Type delegateClass) { MethodInfo invokeMethod = delegateClass.GetMethod("Invoke"); if (invokeMethod == null) throw new ArgumentException("delegateClass"); Resolve(invokeMethod); } [SuppressMessage("Microsoft.Globalization", "CA1307:SpecifyStringComparison", Justification = "EndsWith(\"&\") not a security issue.")] private void Resolve(MethodInfo method) { // Here we build up an array of argument types, separated // by commas. ParameterInfo[] argTypes = method.GetParameters(); parameters = new CodeParameterDeclarationExpression[argTypes.Length]; parameterTypes = new Type[argTypes.Length]; for (int index = 0; index < argTypes.Length; index++) { string paramName = argTypes[index].Name; Type paramType = argTypes[index].ParameterType; if (paramName == null || paramName.Length == 0) paramName = "param" + index.ToString(CultureInfo.InvariantCulture); FieldDirection fieldDir = FieldDirection.In; // check for the '&' that means ref (gotta love it!) // and we need to strip that & before we continue. Ouch. if (paramType.IsByRef) { if (paramType.FullName.EndsWith("&")) { // strip the & and reload the type without it. paramType = paramType.Assembly.GetType(paramType.FullName.Substring(0, paramType.FullName.Length - 1), true); } fieldDir = FieldDirection.Ref; } if (argTypes[index].IsOut) { if (argTypes[index].IsIn) fieldDir = FieldDirection.Ref; else fieldDir = FieldDirection.Out; } parameters[index] = new CodeParameterDeclarationExpression(new CodeTypeReference(paramType), paramName); parameters[index].Direction = fieldDir; parameterTypes[index] = paramType; } this.returnType = new CodeTypeReference(method.ReturnType); } public override bool Equals(object other) { if (other == null) return false; DelegateTypeInfo dtiOther = other as DelegateTypeInfo; if (dtiOther == null) return false; if (ReturnType.BaseType != dtiOther.ReturnType.BaseType || Parameters.Length != dtiOther.Parameters.Length) return false; for (int parameter = 0; parameter < Parameters.Length; parameter++) { CodeParameterDeclarationExpression otherParam = dtiOther.Parameters[parameter]; if (otherParam.Type.BaseType != Parameters[parameter].Type.BaseType) return false; } return true; } public override int GetHashCode() { return base.GetHashCode(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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