如何使用ReSharper SDK創建[CustomAttribute（typeof（GenericType <,>））]？

Question

有沒有辦法使用泛型類型創建typeof表達式的屬性？

下面的代碼工作只是部分：

CSharpElementFactory factory = ... 
IClassDeclaration typeDeclaration = ... 

IClassDeclaration classDeclaration = ... 
IType[] attributeTypeParameters = 
    (from typeParameter in classDeclaration.TypeParameters 
    select (IType)TypeFactory.CreateUnknownType(module)).ToArray(); 
IType classType = TypeFactory.CreateType(classDeclaration.DeclaredElement, 
             attributeTypeParameters); 

var attribute = factory.CreateAttribute(
    new SpecialAttributeInstance(
     ClrTypeNames.ContractClassAttribute, 
     module, 
     () => new[] { new AttributeValue(classType) }, 
     Enumerable.Empty<Pair<string, AttributeValue>>)); 
typeDeclaration.AddAttributeAfter(attribute, null); 

Answer 1

我懷疑問題是要定義你的類聲明的方式。下面是其中裝飾上下文中的類[ContractClass(typeof(Dictionary<,>))]

ClrTypeName contractClassAttribute = 
    new ClrTypeName("System.Diagnostics.Contracts.ContractClassAttribute"); 
ClrTypeName someGenericClass = new ClrTypeName("System.Collections.Generic.Dictionary`2"); 

var module = provider.PsiModule; 
var owner = provider.GetSelectedElement<IClassDeclaration>(true, true); 
var factory = CSharpElementFactory.GetInstance(module); 

var someGenericTypeElement = TypeElementUtil.GetTypeElementByClrName(someGenericClass, module); 
var unknownType = TypeFactory.CreateUnknownType(module); 
var someGenericType = TypeFactory.CreateType(someGenericTypeElement, unknownType, unknownType); 
var contractClassTypeElement = TypeElementUtil.GetTypeElementByClrName(contractClassAttribute, module); 
var attribute = factory.CreateAttribute(contractClassTypeElement, new[] {new AttributeValue(someGenericType)}, 
             EmptyArray<Pair<string, AttributeValue>>.Instance); 
owner.AddAttributeAfter(attribute, null);