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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. :^)
This commit is contained in:
Andreas Kling 2020-06-21 15:14:02 +02:00
parent 1914f52371
commit af51dc105a
57 changed files with 122 additions and 106 deletions

View file

@ -32,6 +32,8 @@
namespace JS {
class GlobalObject : public Object {
JS_OBJECT(GlobalObject, Object);
public:
explicit GlobalObject();
virtual void initialize();
@ -53,8 +55,6 @@ protected:
void add_constructor(const FlyString& property_name, ConstructorType*&, Object& prototype);
private:
virtual const char* class_name() const override { return "GlobalObject"; }
JS_DECLARE_NATIVE_FUNCTION(gc);
JS_DECLARE_NATIVE_FUNCTION(is_nan);
JS_DECLARE_NATIVE_FUNCTION(is_finite);