Add ES5 classes
This commit is contained in:
Luis Blanco
parent
bb46894d97
commit
98aaf2d4ba
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@ -1,7 +1,7 @@
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#ifndef _ADDON_TOOLS_HPP_
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#define _ADDON_TOOLS_HPP_
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#define NODE_ADDON_API_DISABLE_DEPRECATED
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#include <napi.h>
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@ -479,5 +479,157 @@ inline void eventEmitAsync(
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}
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inline void inheritEs5(napi_env env, Napi::Function ctor, Napi::Function superCtor) {
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napi_value global, globalObject, setProto, ctorProtoProp, superCtorProtoProp;
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napi_value argv[2];
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napi_get_global(env, &global);
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napi_get_named_property(env, global, "Object", &globalObject);
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napi_get_named_property(env, globalObject, "setPrototypeOf", &setProto);
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napi_get_named_property(env, ctor, "prototype", &ctorProtoProp);
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napi_get_named_property(env, superCtor, "prototype", &superCtorProtoProp);
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argv[0] = ctorProtoProp;
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argv[1] = superCtorProtoProp;
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napi_call_function(env, global, setProto, 2, argv, nullptr);
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argv[0] = ctor;
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argv[1] = superCtor;
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napi_call_function(env, global, setProto, 2, argv, nullptr);
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ctor.Set("super_", superCtor); \
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}
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typedef Napi::Value (*StaticMethodCallback)(const Napi::CallbackInfo& info);
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typedef Napi::Value (*StaticGetterCallback)(const Napi::CallbackInfo& info);
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typedef void (*StaticSetterCallback)(const Napi::CallbackInfo& info);
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#define DECLARE_ES5_CLASS(CLASS, NAME) \
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static Napi::FunctionReference _ctorEs5; \
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static const char *_nameEs5; \
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static void CLASS::_finalizeEs5(napi_env e, void *dest, void* hint); \
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static napi_value CLASS::_createEs5(napi_env e, napi_callback_info i); \
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inline void super( \
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const Napi::CallbackInfo& info, \
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int argc = 0, \
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const Napi::Value *argv = nullptr \
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) { \
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Napi::Function ctor = _ctorEs5.Value(); \
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if (ctor.Has("super_")) { \
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Napi::Function _super = ctor.Get("super_").As<Napi::Function>(); \
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std::vector<napi_value> args; \
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for (int i = 0; i < argc; i++) { \
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args.push_back(argv[i]); \
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} \
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_super.Call(info.This(), args); \
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} \
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}; \
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inline static Napi::Function wrap(Napi::Env env) { \
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napi_value __initResult; \
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napi_create_function(env, #NAME, 0, CLASS::_createEs5, nullptr, &__initResult); \
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Napi::Function ctor = Napi::Function(env, __initResult); \
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_ctorEs5 = Napi::Persistent(ctor); \
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_ctorEs5.SuppressDestruct(); \
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return ctor; \
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}; \
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inline static Napi::Function wrap( \
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Napi::Env env, \
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Napi::Function superCtor \
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) { \
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Napi::Function ctor = wrap(env); \
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inheritEs5(env, ctor, superCtor); \
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return ctor; \
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}; \
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inline static void method( \
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const char *name, \
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StaticMethodCallback cb \
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) { \
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Napi::Function proto = _ctorEs5.Value().Get("prototype").As<Napi::Function>(); \
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proto.DefineProperty( \
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Napi::PropertyDescriptor::Function(proto.Env(), proto, name, cb) \
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); \
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}; \
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inline static void accessorR( \
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const char *name, \
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StaticGetterCallback getter \
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) { \
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Napi::Function proto = _ctorEs5.Value().Get("prototype").As<Napi::Function>(); \
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proto.DefineProperty( \
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Napi::PropertyDescriptor::Accessor(proto.Env(), proto, name, getter) \
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); \
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}; \
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inline static void accessorRw( \
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const char *name, \
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StaticGetterCallback getter, \
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StaticSetterCallback setter \
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) { \
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Napi::Function proto = _ctorEs5.Value().Get("prototype").As<Napi::Function>(); \
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proto.DefineProperty( \
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Napi::PropertyDescriptor::Accessor( \
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proto.Env(), \
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proto, \
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name, \
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getter, \
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setter \
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) \
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); \
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};
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#define JS_GET_THAT(CLASS) \
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CLASS *that; \
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Napi::Object thatObj = info.This().As<Napi::Object>(); \
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napi_unwrap(info.Env(), thatObj.Get(_nameEs5), reinterpret_cast<void**>(&that));
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#define JS_DECLARE_METHOD(CLASS, NAME) \
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inline static Napi::Value __st_##NAME(const Napi::CallbackInfo &info) { \
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JS_GET_THAT(CLASS); \
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return that->__i_##NAME(info); \
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}; \
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Napi::Value __i_##NAME(const Napi::CallbackInfo &info);
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#define JS_DECLARE_GETTER(CLASS, NAME) JS_DECLARE_METHOD(CLASS, NAME##Getter)
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#define JS_DECLARE_SETTER(CLASS, NAME) \
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inline static void __st_##NAME##Setter( \
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const Napi::CallbackInfo &info \
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) { \
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JS_GET_THAT(CLASS); \
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that->__i_##NAME(info, info[0]); \
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}; \
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void __i_##NAME##Setter(const Napi::CallbackInfo &info, const Napi::Value &value);
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#define JS_IMPLEMENT_METHOD(CLASS, NAME) \
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Napi::Value CLASS::__i_##NAME(const Napi::CallbackInfo &info)
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#define JS_IMPLEMENT_GETTER(CLASS, NAME) JS_IMPLEMENT_METHOD(CLASS, NAME##Getter)
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#define JS_IMPLEMENT_SETTER(CLASS, NAME) \
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void CLASS::__i_##NAME##Setter( \
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const Napi::CallbackInfo &info, \
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const Napi::Value &value \
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)
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#define JS_ASSIGN_METHOD(NAME) method(#NAME, __st_##NAME)
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#define JS_ASSIGN_GETTER(NAME) accessorR(#NAME, __st_##NAME##Getter)
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#define JS_ASSIGN_SETTER(NAME) accessorRw(#NAME, __st_##NAME##Getter, __st_##NAME##Setter)
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#define IMPLEMENT_ES5_CLASS(CLASS) \
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Napi::FunctionReference CLASS::_ctorEs5; \
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const char *CLASS::_nameEs5 = "CLASS##__TIMESTAMP__"; \
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void CLASS::_finalizeEs5(napi_env e, void *dest, void* hint) { \
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CLASS *instance = reinterpret_cast<CLASS*>(dest); \
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delete instance; \
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} \
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napi_value CLASS::_createEs5(napi_env env, napi_callback_info i) { \
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Napi::CallbackInfo info(env, i); \
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CLASS *instance = new CLASS(info); \
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Napi::Object wrapObj = Napi::Object::New(env); \
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info.This().As<Napi::Object>().Set(_nameEs5, wrapObj); \
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napi_wrap(env, wrapObj, instance, CLASS::_finalizeEs5, nullptr, nullptr); \
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return info.Env().Undefined(); \
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}
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#endif // _ADDON_TOOLS_HPP_
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