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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. :^)
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1914f52371
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57 changed files with 122 additions and 106 deletions
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@ -32,6 +32,8 @@
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namespace JS {
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class Error : public Object {
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JS_OBJECT(Error, Object);
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public:
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static Error* create(GlobalObject&, const FlyString& name, const String& message);
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@ -45,7 +47,6 @@ public:
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private:
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virtual bool is_error() const final { return true; }
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virtual const char* class_name() const override { return "Error"; }
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FlyString m_name;
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String m_message;
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@ -53,14 +54,13 @@ private:
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#define DECLARE_ERROR_SUBCLASS(ClassName, snake_name, PrototypeName, ConstructorName) \
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class ClassName final : public Error { \
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JS_OBJECT(ClassName, Error); \
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\
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public: \
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static ClassName* create(GlobalObject&, const String& message); \
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\
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ClassName(const String& message, Object& prototype); \
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virtual ~ClassName() override; \
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\
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private: \
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virtual const char* class_name() const override; \
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};
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#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName) \
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