ContractAbbreviatorAttribute Classe

Définition

public ref class ContractAbbreviatorAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=false)]
[System.Diagnostics.Conditional("CONTRACTS_FULL")]
public sealed class ContractAbbreviatorAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=false)>]
[<System.Diagnostics.Conditional("CONTRACTS_FULL")>]
type ContractAbbreviatorAttribute = class
    inherit Attribute

Public NotInheritable Class ContractAbbreviatorAttribute
Inherits Attribute

Héritage

Object

Attribute

ContractAbbreviatorAttribute

Attributs

AttributeUsageAttribute ConditionalAttribute

Exemples

L’exemple suivant montre comment créer des noms abrégés pour les contrats de code répétés dans plusieurs méthodes.

using System.Diagnostics.Contracts;  

public class MyClass   
{  
   public int State { get; }  
   public int Data { get; }  

   [ ContractAbbreviator ]  
   private void DataAndStateUnchanged()   
   {  
      Contract.Ensures( this .State == Contract.OldValue(this.State));  
      Contract.Ensures( this .Data == Contract.OldValue(this.Data));  
   }  

   [ ContractAbbreviator ]  
   private void InStateZeroAndUnchanged()   
   {  
      Contract.Requires( this.State == 0);  
      DataAndStateUnchanged();  
   }  

   public void Method1(...)   
   {  
      InStateZeroAndUnchanged();  
      ...  
   }  

   public void Method2(...)   
   {  
      InStateZeroAndUnchanged();  
      ...  
   }  

   public void Method3(...)  
   {  
      Contract.Requires(this .State == 1);  
      DataAndStateUnchanged();  
   }  
}