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修改napi class snippets片段
Signed-off-by: chen-zhongwei050 <chenzhongwei050@chinasoftinc.com>
This commit is contained in:
chen-zhongwei050
parent
04b8479ec3
commit
78b060854f
@ -6,186 +6,78 @@
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" public:",
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" static napi_value Init(napi_env env, napi_value exports);",
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" static void Destructor(napi_env env, void* nativeObject, void* finalize_hint);",
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" ",
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" private:",
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" explicit HelloWorld(std::string value_ = \"\");",
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" explicit HelloWorld();",
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" ~HelloWorld();",
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" ",
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" static napi_value New(napi_env env, napi_callback_info info);",
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" static napi_value GetValue(napi_env env, napi_callback_info info);",
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" static napi_value SetValue(napi_env env, napi_callback_info info);",
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" static napi_value Hello(napi_env env, napi_callback_info info);",
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" ",
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" std::string value_;",
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" napi_env env_;",
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" napi_ref wrapper_;",
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" };",
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" ",
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"static thread_local napi_ref g_ref = nullptr;",
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"",
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"HelloWorld::HelloWorld(std::string value)",
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" : value_(value), env_(nullptr), wrapper_(nullptr) {}",
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"",
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"HelloWorld::~HelloWorld()",
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"{",
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" napi_delete_reference(env_, wrapper_);",
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"}",
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"",
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"void HelloWorld::Destructor(napi_env env,",
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" void* nativeObject,",
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" [[maybe_unused]] void* finalize_hint)",
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"{",
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" OH_LOG_INFO(LOG_APP, \"HelloWorld::Destructor called\");",
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" reinterpret_cast<HelloWorld*>(nativeObject)->~HelloWorld();",
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"}",
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"",
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"napi_value HelloWorld::New(napi_env env, napi_callback_info info)",
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"{",
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" OH_LOG_INFO(LOG_APP, \"HelloWorld::New called\");",
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"",
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" napi_value newTarget;",
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" napi_get_new_target(env, info, &newTarget);",
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" if (newTarget != nullptr) {",
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" // Invoked as the constructor `new HelloWorld(...)`.",
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" size_t argc = 1;",
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" napi_value args[1];",
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" napi_value jsThis;",
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" napi_get_cb_info(env, info, &argc, args, &jsThis, nullptr);",
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"",
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" std::string value = \"\";",
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" size_t strLength = 0;",
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" napi_status status = napi_get_value_string_utf8(env, args[0], NULL, 0, &strLength);",
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" if (status != napi_ok) {",
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" return nullptr;",
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" }",
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" char *strValue = new char[strLength + 1];",
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" status = napi_get_value_string_utf8(env, args[0], strValue, strLength + 1, &strLength);",
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" if (status != napi_ok) {",
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" delete[] strValue;",
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" return nullptr;",
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" }",
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" value = strValue;",
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" delete[] strValue;",
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"",
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" HelloWorld* obj = new HelloWorld(value);",
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"",
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" obj->env_ = env;",
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" // Use napi_wrap to wrap the C++ object obj in the ArkTS object jsThis.",
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" napi_wrap(env,",
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" jsThis,",
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" reinterpret_cast<void*>(obj),",
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" HelloWorld::Destructor,",
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" nullptr, // finalize_hint",
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" &obj->wrapper_);",
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"",
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" return jsThis;",
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" } else {",
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" // Invoked as the plain function `Hello(...)`.",
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" size_t argc = 1;",
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" napi_value args[1];",
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" napi_get_cb_info(env, info, &argc, args, nullptr, nullptr);",
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"",
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" napi_value cons;",
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" napi_get_reference_value(env, g_ref, &cons);",
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" napi_value instance;",
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" napi_new_instance(env, cons, argc, args, &instance);",
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"",
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" return instance;",
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" }",
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"}",
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"",
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"napi_value HelloWorld::GetValue(napi_env env, napi_callback_info info)",
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"{",
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" OH_LOG_INFO(LOG_APP, \"HelloWorld::GetValue called\");",
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"",
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" napi_value jsThis;",
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" napi_get_cb_info(env, info, nullptr, nullptr, &jsThis, nullptr);",
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"",
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" HelloWorld* obj;",
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" // Use napi_unwrap to retrieve obj (the C++ object) previously wrapped in jsThis (the ArkTS object), and perform subsequent operations.",
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" napi_unwrap(env, jsThis, reinterpret_cast<void**>(&obj));",
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" napi_value str;",
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" napi_status status = napi_create_string_utf8(env, obj->value_.c_str(), NAPI_AUTO_LENGTH, &str);",
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" if (status != napi_ok) {",
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" napi_throw_error(env, NULL, \"Failed to create result value\");",
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" return NULL;",
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" }",
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" return str;",
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"}",
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"",
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"napi_value HelloWorld::SetValue(napi_env env, napi_callback_info info)",
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"{",
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" OH_LOG_INFO(LOG_APP, \"HelloWorld::SetValue called\");",
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"",
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" size_t argc = 1;",
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" napi_value value;",
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" napi_value jsThis;",
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"",
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" napi_get_cb_info(env, info, &argc, &value, &jsThis, nullptr);",
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"",
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" HelloWorld* obj;",
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" // Use napi_unwrap to retrieve obj (the C++ object) previously wrapped in jsThis (the ArkTS object), and perform subsequent operations.",
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" napi_unwrap(env, jsThis, reinterpret_cast<void**>(&obj));",
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" size_t strLength = 0;",
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" napi_status status = napi_get_value_string_utf8(env, value, NULL, 0, &strLength);",
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" if (status != napi_ok) {",
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" return nullptr;",
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" }",
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" char *strValue = new char[strLength + 1];",
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" status = napi_get_value_string_utf8(env, value, strValue, strLength + 1, &strLength);",
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" if (status != napi_ok) {",
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" delete[] strValue;",
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" return nullptr;",
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" }",
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" obj->value_ = strValue;",
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" delete[] strValue;",
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"",
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" return nullptr;",
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"}",
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"",
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"napi_value HelloWorld::Hello(napi_env env, napi_callback_info info)",
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"{",
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" OH_LOG_INFO(LOG_APP, \"HelloWorld::Hello called\");",
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"",
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" napi_value jsThis;",
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" napi_get_cb_info(env, info, nullptr, nullptr, &jsThis, nullptr);",
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"",
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" HelloWorld* obj;",
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" // Use napi_unwrap to retrieve obj (the C++ object) previously wrapped in jsThis (the ArkTS object), and perform subsequent operations.",
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" napi_unwrap(env, jsThis, reinterpret_cast<void**>(&obj));",
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" obj->value_ = \"native: hello world to js!\";",
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" napi_value str;",
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" napi_status status = napi_create_string_utf8(env, obj->value_.c_str(), NAPI_AUTO_LENGTH, &str);",
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" if (status != napi_ok) {",
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" napi_throw_error(env, NULL, \"Failed to create result value\");",
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" return NULL;",
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" }",
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" return str;",
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"}",
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"",
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"napi_value HelloWorld::Init(napi_env env, napi_value exports)",
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"{",
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" napi_property_descriptor properties[] = {",
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" { \"value\", 0, 0, GetValue, SetValue, 0, napi_default, 0 },",
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" { \"nativeHello\", nullptr, Hello, nullptr, nullptr, nullptr, napi_default, nullptr }",
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" };",
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"",
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" napi_value cons;",
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" napi_define_class(env, \"HelloWorld\", NAPI_AUTO_LENGTH, New, nullptr, 2,",
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" properties, &cons);",
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"",
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" napi_create_reference(env, cons, 1, &g_ref);",
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" napi_set_named_property(env, exports, \"HelloWorld\", cons);",
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" return exports;",
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"}",
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"",
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"EXTERN_C_START",
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"static napi_value Init(napi_env env, napi_value exports)",
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"{",
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" HelloWorld::Init(env, exports);",
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" return exports;",
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"}",
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"EXTERN_C_END"
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" HelloWorld::HelloWorld(): value_(\"\"), env_(nullptr), wrapper_(nullptr) {}",
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" HelloWorld::~HelloWorld() {}",
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" void HelloWorld::Destructor(napi_env env, void* nativeObject, [[maybe_unused]] void* finalize_hint) { reinterpret_cast<HelloWorld*>(nativeObject)->~HelloWorld(); }",
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" napi_value HelloWorld::New(napi_env env, napi_callback_info info) {",
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" napi_value newTarget;",
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" napi_get_new_target(env, info, &newTarget); // Use napi_get_new_target to check if the constructor was invoked with new.",
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" if (newTarget != nullptr) { // Invoked as the constructor `new HelloWorld()`.",
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" napi_value jsThis;",
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" napi_get_cb_info(env, info, nullptr, nullptr, &jsThis, nullptr); // Use napi_get_cb_info to retrieve the callback's context and arguments.",
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" HelloWorld* obj = new HelloWorld();",
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" obj->env_ = env;",
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" // Use napi_wrap to wrap the C++ object obj in the ArkTS object jsThis.",
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" napi_wrap(env, jsThis, reinterpret_cast<void*>(obj), HelloWorld::Destructor, nullptr, &obj->wrapper_);",
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" return jsThis;",
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" } else {",
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" // Use napi_throw_error to throw an error indicating incorrect constructor invocation.",
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" napi_throw_error(env, nullptr, \"HelloWorld must be invoked as a constructor with `new`\");",
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" return nullptr;",
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" }",
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" }",
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" napi_value HelloWorld::GetValue(napi_env env, napi_callback_info info) {",
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" napi_value jsThis;",
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" napi_get_cb_info(env, info, nullptr, nullptr, &jsThis, nullptr); // Use napi_get_cb_info to retrieve the callback's context and arguments.",
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" HelloWorld* obj;",
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" // Use napi_unwrap to retrieve obj (the C++ object) previously wrapped in jsThis (the ArkTS object), and perform subsequent operations.",
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" napi_unwrap(env, jsThis, reinterpret_cast<void**>(&obj));",
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" napi_value value;",
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" // Todo: get value from native",
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" return value;",
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" }",
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" napi_value HelloWorld::SetValue(napi_env env, napi_callback_info info) {",
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" // Todo: get value from js",
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" HelloWorld* obj;",
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" // Use napi_unwrap to retrieve obj (the C++ object) previously wrapped in jsThis (the ArkTS object), and perform subsequent operations.",
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" napi_unwrap(env, jsThis, reinterpret_cast<void**>(&obj));",
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" // Todo: set value to native",
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" return nullptr;",
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" }",
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" napi_value HelloWorld::Hello(napi_env env, napi_callback_info info) {",
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" napi_value jsThis;",
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" napi_get_cb_info(env, info, nullptr, nullptr, &jsThis, nullptr); // Use napi_get_cb_info to retrieve the callback's context and arguments.",
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" HelloWorld* obj;",
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" // Use napi_unwrap to retrieve obj (the C++ object) previously wrapped in jsThis (the ArkTS object), and perform subsequent operations.",
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" napi_unwrap(env, jsThis, reinterpret_cast<void**>(&obj));",
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" napi_value value;",
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" // Todo: assign a value to obj and return to ArkTs.",
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" return value;",
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" }",
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" napi_value HelloWorld::Init(napi_env env, napi_value exports) {",
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" // Use napi_property_descriptor to define properties and methods for a N-API object.",
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" napi_property_descriptor properties[] = {",
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" { \"value\", 0, 0, GetValue, SetValue, 0, napi_default, 0 },",
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" { \"nativeHello\", nullptr, Hello, nullptr, nullptr, nullptr, napi_default, nullptr }",
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" };",
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" napi_value cons;",
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" // Use napi_define_class to define a new JavaScript class backed by a C++ class.",
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" napi_define_class(env, \"HelloWorld\", NAPI_AUTO_LENGTH, New, nullptr, 2, properties, &cons);",
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" // Use napi_set_named_property to add a property to the exports object, making the constructor accessible in ArkTs.",
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" napi_set_named_property(env, exports, \"HelloWorld\", cons);",
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" return exports;",
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" }"
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]
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}
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}
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