PostSharp

[tmilker]

Does PostSharp model any type of hierarchy for types? For instance, if I have a class inheritance hierarchy of:

System.Object -> GrandParent -> Parent -> Child

Is there a way to get the TypeDefDeclaration of the Parent, assuming I have the Child's TypeDefDeclaration, from there get the GrandParent's, etc. back up the tree?

I know I can do this recursively with GetDeclarationEnumerator but I am just wondering if there is another way I am not seeing.

[gfraiteur]

Navigating from children to the parent is easy: it is the property child.BaseType.

To navigate from parents to children, have a look at the class TypeHierarchyTask. This task indexes all parent-child relationships one for all.

The following code enumerates all types (in the current module) derived (even indirectly) from MulticastAttribute:

Code: Select all

            TypeHierarchyTask typeHierarchy = TypeHierarchyTask.GetTask( this.Project );

            IEnumerator<Type> typeEnumerator =
                typeHierarchy.GetDerivedTypesEnumerator( typeof(MulticastAttribute), true, false );

            while ( typeEnumerator.MoveNext() )
            {
            }


The advantage of using this task is of course that the whole indexing is done only once for all tasks.

Be sure to add this task as a prerequisite of your.

Gael

[tmilker]

*INCORRECT*But BaseType just returns IType. You cannot go any further backwards and get the BaseType of that type.

*edit I see, I had a bug in the checks I was doing to get this. Thanks a lot.

[gfraiteur]

Sure, BaseType returns an IType. Because the base type can be a TypeSpec, a TypeRef or a TypeDef. If you want the TypeDef, you have to use ITypeSignature.GetTypeDefinition(). The TypeDef can be in another module, of course.