Finding all class declarations than inherit from another with Roslyn

Question

I have a CSharpCompilation instance containing an array of SyntaxTrees and I am trying to find all the class declarations that inherit from a class

Answer 1

So I came up with the following which will recursively check all classes for the inherited type

public class BaseClassRewriter : CSharpSyntaxRewriter
{
    private readonly SemanticModel _model;

    public BaseClassRewriter(SemanticModel model)
    {
        _model = model;
    }

    public override SyntaxNode VisitClassDeclaration(ClassDeclarationSyntax node)
    {
        var symbol = _model.GetDeclaredSymbol(node);
        if (InheritsFrom(symbol))
        {
            // hit!
        }
    }

    private bool InheritsFrom(INamedTypeSymbol symbol)
    {
        while (true)
        {
            if (symbol.ToString() == typeof(T).FullName)
            {
                return true;
            }
            if (symbol.BaseType != null)
            {
                symbol = symbol.BaseType;
                continue;
            }
            break;
        }
        return false;
    }
}