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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/ScriptFunction.h
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@ -32,6 +32,8 @@
namespace JS {
class ScriptFunction final : public Function {
JS_OBJECT(ScriptFunction, Function);
public:
static ScriptFunction* create(GlobalObject&, const FlyString& name, const Statement& body, Vector<FunctionNode::Parameter> parameters, i32 m_function_length, LexicalEnvironment* parent_environment, bool is_arrow_function = false);
@ -50,7 +52,6 @@ public:
private:
virtual bool is_script_function() const override { return true; }
virtual const char* class_name() const override { return "ScriptFunction"; }
virtual LexicalEnvironment* create_environment() override;
virtual void visit_children(Visitor&) override;