LibJS+LibWeb: Add JS::Object::inherits(class_name)

To allow implementing the DOM class hierarchy in JS bindings, this
patch adds an inherits() function that can be used to ask an Object
if it inherits from a specific C++ class (by name).

The necessary overrides are baked into each Object subclass by the
new JS_OBJECT macro, which works similarly to C_OBJECT in LibCore.

Thanks to @Dexesttp for suggesting this approach. :^)

1 files changed, 2 insertions, 2 deletions

diff --git a/Libraries/LibJS/Runtime/ConsoleObject.h b/Libraries/LibJS/Runtime/ConsoleObject.h
index 77a764bd6a..83a2b6bcd2 100644
--- a/Libraries/LibJS/Runtime/ConsoleObject.h
+++ b/Libraries/LibJS/Runtime/ConsoleObject.h
@@ -31,14 +31,14 @@
 namespace JS {
 
 class ConsoleObject final : public Object {
+    JS_OBJECT(ConsoleObject, Object);
+
 public:
     explicit ConsoleObject(GlobalObject&);
     virtual void initialize(Interpreter&, GlobalObject&) override;
     virtual ~ConsoleObject() override;
 
 private:
-    virtual const char* class_name() const override { return "ConsoleObject"; }
-
     JS_DECLARE_NATIVE_FUNCTION(log);
     JS_DECLARE_NATIVE_FUNCTION(debug);
     JS_DECLARE_NATIVE_FUNCTION(info);