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node_modules
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ReactCommon
cxxreact
File Content:
SampleCxxModule.cpp
/* * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ #include "SampleCxxModule.h" #include <cxxreact/JsArgumentHelpers.h> #include <glog/logging.h> #include <memory> #include <thread> using namespace folly; namespace facebook { namespace xplat { namespace samples { std::string Sample::hello() { LOG(WARNING) << "glog: hello, world"; return "hello"; } double Sample::add(double a, double b) { return a + b; } std::string Sample::concat(const std::string& a, const std::string& b) { return a + b; } std::string Sample::repeat(int count, const std::string& str) { std::string ret; for (int i = 0; i < count; i++) { ret += str; } return ret; } void Sample::save(std::map<std::string, std::string> dict) { state_ = std::move(dict); } std::map<std::string, std::string> Sample::load() { return state_; } void Sample::except() { // TODO mhorowitz #7128529: There's no way to automatically test this // right now. // throw std::runtime_error("oops"); } void Sample::call_later(int msec, std::function<void()> f) { std::thread t([=] { std::this_thread::sleep_for(std::chrono::milliseconds(msec)); f(); }); t.detach(); } double Sample::twice(double n) { return n * 2; } SampleCxxModule::SampleCxxModule(std::unique_ptr<Sample> sample) : sample_(std::move(sample)) {} std::string SampleCxxModule::getName() { return "Sample"; } auto SampleCxxModule::getConstants() -> std::map<std::string, folly::dynamic> { return { {"one", 1}, {"two", 2}, {"animal", "fox"}, }; } auto SampleCxxModule::getMethods() -> std::vector<Method> { return { Method("hello", [this] { sample_->hello(); }), Method( "add", [this](dynamic args, Callback cb) { LOG(WARNING) << "Sample: add => " << sample_->add( jsArgAsDouble(args, 0), jsArgAsDouble(args, 1)); cb({sample_->add(jsArgAsDouble(args, 0), jsArgAsDouble(args, 1))}); }), Method( "concat", [this](dynamic args, Callback cb) { cb({sample_->concat( jsArgAsString(args, 0), jsArgAsString(args, 1))}); }), Method( "repeat", [this](dynamic args, Callback cb) { cb({sample_->repeat( (int)jsArgAsInt(args, 0), jsArgAsString(args, 1))}); }), Method("save", this, &SampleCxxModule::save), Method("load", this, &SampleCxxModule::load), Method( "call_later", [this](dynamic args, Callback cb) { sample_->call_later((int)jsArgAsInt(args, 0), [cb] { cb({}); }); }), Method("except", [this] { sample_->except(); }), Method( "twice", [this](dynamic args) -> dynamic { return sample_->twice(jsArgAsDouble(args, 0)); }, SyncTag), Method( "syncHello", [this]() -> dynamic { sample_->hello(); return nullptr; }, SyncTag), Method( "addIfPositiveAsPromise", [](dynamic args, Callback cb, Callback cbError) { auto a = jsArgAsDouble(args, 0); auto b = jsArgAsDouble(args, 1); if (a < 0 || b < 0) { cbError({"Negative number!"}); } else { cb({a + b}); } }), Method( "addIfPositiveAsAsync", [](dynamic args, Callback cb, Callback cbError) { auto a = jsArgAsDouble(args, 0); auto b = jsArgAsDouble(args, 1); if (a < 0 || b < 0) { cbError({"Negative number!"}); } else { cb({a + b}); } }, AsyncTag), }; } void SampleCxxModule::save(folly::dynamic args) { std::map<std::string, std::string> m; for (const auto& p : jsArgN(args, 0, &dynamic::items)) { m.emplace( jsArg(p.first, &dynamic::asString, "map key"), jsArg(p.second, &dynamic::asString, "map value")); } sample_->save(std::move(m)); } void SampleCxxModule::load([[maybe_unused]] folly::dynamic args, Callback cb) { dynamic d = dynamic::object; for (const auto& p : sample_->load()) { d.insert(p.first, p.second); } cb({d}); } } // namespace samples } // namespace xplat } // namespace facebook // By convention, the function name should be the same as the class name. facebook::xplat::module::CxxModule* SampleCxxModule() { return new facebook::xplat::samples::SampleCxxModule( std::make_unique<facebook::xplat::samples::Sample>()); }
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