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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
Notes: sideshowbarker 2024-07-19 05:29:32 +09:00
57 changed files with 122 additions and 106 deletions
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6
Libraries/LibJS/Runtime/ErrorConstructor.h
View file

@ -32,6 +32,8 @@
namespace JS {
class ErrorConstructor final : public NativeFunction {
JS_OBJECT(ErrorConstructor, NativeFunction);
public:
explicit ErrorConstructor(GlobalObject&);
virtual void initialize(Interpreter&, GlobalObject&) override;
@ -42,11 +44,12 @@ public:
private:
virtual bool has_constructor() const override { return true; }
virtual const char* class_name() const override { return "ErrorConstructor"; }
};
#define DECLARE_ERROR_SUBCLASS_CONSTRUCTOR(ClassName, snake_name, PrototypeName, ConstructorName) \
class ConstructorName final : public NativeFunction { \
JS_OBJECT(ConstructorName, NativeFunction); \
\
public: \
explicit ConstructorName(GlobalObject&); \
virtual void initialize(Interpreter&, GlobalObject&) override; \
@ -56,7 +59,6 @@ private:
\
private: \
virtual bool has_constructor() const override { return true; } \
virtual const char* class_name() const override { return #ClassName "Constructor"; } \
};
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName) \