Add IMethodGroupReferenceOperation #76620
Description
Background and Motivation
Please, see #76616.
Consider the following source code:
public class Type1
{
public static void f(){}
}
using static Type1;
using Type3 = Type1;
public class Type2
{
public static string X = nameof(f);
public static string Y = nameof(Type1.f);
public static string Z = nameof(Type3.f);
}
It demonstrates three different way to express the same nameof semantics. An important detail - the argument of nameof is a method group:
Type1.f- fully qualified through its parent type Type1Type3.f- fully qualified through an alias Type3f- unqualified, imported into the scope by theusing static Type1directive.
Inspecting the INameOfOperation yields different results for the third case as explained in great detail in the aforementioned issue.
Proposed API
Seems like the only case that needs special attention is when the argument of the nameof operator is a method group. Hence the idea is to introduce something like IMethodGroupReferenceOperation:
namespace Microsoft.CodeAnalysis.Operations
{
public class IMethodGroupReferenceOperation
{
public INamedTypeSymbol ContainingType { get; }
public string Name { get; }
}
...
}