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

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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
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3
Libraries/LibJS/Runtime/Array.h
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@ -31,6 +31,8 @@
namespace JS {
class Array final : public Object {
JS_OBJECT(Array, Object);
public:
static Array* create(GlobalObject&);
@ -40,7 +42,6 @@ public:
static Array* typed_this(Interpreter&, GlobalObject&);
private:
virtual const char* class_name() const override { return "Array"; }
virtual bool is_array() const override { return true; }
JS_DECLARE_NATIVE_GETTER(length_getter);