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react-native/ReactCommon/cxxreact/JSCExecutor.cpp

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// Copyright 2004-present Facebook. All Rights Reserved.
#include "JSCExecutor.h"
#include <algorithm>
#include <condition_variable>
#include <fcntl.h>
#include <mutex>
#include <sstream>
#include <string>
#include <sys/time.h>
#include <sys/socket.h>
#include <system_error>
#include <arpa/inet.h>
#include <folly/Conv.h>
#include <folly/Exception.h>
#include <folly/json.h>
#include <folly/Memory.h>
#include <folly/String.h>
#include <glog/logging.h>
#include <jschelpers/JSCHelpers.h>
#include <jschelpers/Value.h>
#include <jsinspector/InspectorInterfaces.h>
#include "JSBigString.h"
#include "JSBundleType.h"
#include "JSCLegacyTracing.h"
#include "JSCMemory.h"
#include "JSCNativeModules.h"
#include "JSCPerfStats.h"
#include "JSCSamplingProfiler.h"
#include "JSCTracing.h"
#include "JSCUtils.h"
#include "JSModulesUnbundle.h"
#include "ModuleRegistry.h"
#include "Platform.h"
#include "RAMBundleRegistry.h"
#include "RecoverableError.h"
#include "SystraceSection.h"
#if defined(WITH_FB_JSC_TUNING) && defined(__ANDROID__)
#include <jsc_config_android.h>
#endif
namespace facebook {
namespace react {
namespace {
template<JSValueRef (JSCExecutor::*method)(size_t, const JSValueRef[])>
inline JSObjectCallAsFunctionCallback exceptionWrapMethod() {
struct funcWrapper {
static JSValueRef call(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef *exception) {
try {
auto executor = Object::getGlobalObject(ctx).getPrivate<JSCExecutor>();
if (executor && executor->getJavaScriptContext()) { // Executor not invalidated
return (executor->*method)(argumentCount, arguments);
}
} catch (...) {
*exception = translatePendingCppExceptionToJSError(ctx, function);
}
return Value::makeUndefined(ctx);
}
};
return &funcWrapper::call;
}
template<JSValueRef (JSCExecutor::*method)(JSObjectRef object, JSStringRef propertyName)>
inline JSObjectGetPropertyCallback exceptionWrapMethod() {
struct funcWrapper {
static JSValueRef call(
JSContextRef ctx,
JSObjectRef object,
JSStringRef propertyName,
JSValueRef *exception) {
try {
auto executor = Object::getGlobalObject(ctx).getPrivate<JSCExecutor>();
if (executor && executor->getJavaScriptContext()) { // Executor not invalidated
return (executor->*method)(object, propertyName);
}
} catch (...) {
*exception = translatePendingCppExceptionToJSError(ctx, object);
}
return Value::makeUndefined(ctx);
}
};
return &funcWrapper::call;
}
}
#if DEBUG
static JSValueRef nativeInjectHMRUpdate(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef *exception) {
String execJSString = Value(ctx, arguments[0]).toString();
String jsURL = Value(ctx, arguments[1]).toString();
evaluateScript(ctx, execJSString, jsURL);
return Value::makeUndefined(ctx);
}
#endif
std::unique_ptr<JSExecutor> JSCExecutorFactory::createJSExecutor(
std::shared_ptr<ExecutorDelegate> delegate, std::shared_ptr<MessageQueueThread> jsQueue) {
return folly::make_unique<JSCExecutor>(delegate, jsQueue, m_jscConfig, m_nativeExtensionsProvider);
}
JSCExecutor::JSCExecutor(std::shared_ptr<ExecutorDelegate> delegate,
std::shared_ptr<MessageQueueThread> messageQueueThread,
const folly::dynamic& jscConfig,
std::function<folly::dynamic(const std::string &)> nativeExtensionsProvider) throw(JSException) :
m_delegate(delegate),
m_messageQueueThread(messageQueueThread),
m_nativeModules(delegate ? delegate->getModuleRegistry() : nullptr),
m_jscConfig(jscConfig),
m_nativeExtensionsProvider(nativeExtensionsProvider) {
initOnJSVMThread();
{
SystraceSection s("nativeModuleProxy object");
installGlobalProxy(m_context, "nativeModuleProxy",
exceptionWrapMethod<&JSCExecutor::getNativeModule>());
}
installGlobalProxy(m_context, "nativeExtensions",
exceptionWrapMethod<&JSCExecutor::getNativeExtension>());
}
JSCExecutor::~JSCExecutor() {
CHECK(*m_isDestroyed) << "JSCExecutor::destroy() must be called before its destructor!";
}
void JSCExecutor::destroy() {
*m_isDestroyed = true;
if (m_messageQueueThread.get()) {
m_messageQueueThread->runOnQueueSync([this] () {
terminateOnJSVMThread();
});
} else {
terminateOnJSVMThread();
}
}
void JSCExecutor::setContextName(const std::string& name) {
String jsName = String(m_context, name.c_str());
JSC_JSGlobalContextSetName(m_context, jsName);
}
static bool canUseInspector(JSContextRef context) {
#ifdef WITH_INSPECTOR
#if defined(__APPLE__)
return isCustomJSCPtr(context); // WITH_INSPECTOR && Apple
#else
return true; // WITH_INSPECTOR && Android
#endif
#else
return false; // !WITH_INSPECTOR
#endif
}
static bool canUseSamplingProfiler(JSContextRef context) {
#if defined(__APPLE__) || defined(WITH_JSC_EXTRA_TRACING)
return JSC_JSSamplingProfilerEnabled(context);
#else
return false;
#endif
}
void JSCExecutor::initOnJSVMThread() throw(JSException) {
SystraceSection s("JSCExecutor::initOnJSVMThread");
#if defined(__APPLE__)
const bool useCustomJSC = m_jscConfig.getDefault("UseCustomJSC", false).getBool();
if (useCustomJSC) {
JSC_configureJSCForIOS(true, toJson(m_jscConfig));
}
#else
const bool useCustomJSC = false;
#endif
#if defined(WITH_FB_JSC_TUNING) && defined(__ANDROID__)
configureJSCForAndroid(m_jscConfig);
#endif
// Create a custom global class, so we can store data in it later using JSObjectSetPrivate
JSClassRef globalClass = nullptr;
{
SystraceSection s_("JSClassCreate");
JSClassDefinition definition = kJSClassDefinitionEmpty;
definition.attributes |= kJSClassAttributeNoAutomaticPrototype;
globalClass = JSC_JSClassCreate(useCustomJSC, &definition);
}
{
SystraceSection s_("JSGlobalContextCreateInGroup");
m_context = JSC_JSGlobalContextCreateInGroup(useCustomJSC, nullptr, globalClass);
}
JSC_JSClassRelease(useCustomJSC, globalClass);
// Add a pointer to ourselves so we can retrieve it later in our hooks
Object::getGlobalObject(m_context).setPrivate(this);
if (canUseInspector(m_context)) {
const std::string ownerId = m_jscConfig.getDefault("OwnerIdentity", "unknown").getString();
const std::string appId = m_jscConfig.getDefault("AppIdentity", "unknown").getString();
const std::string deviceId = m_jscConfig.getDefault("DeviceIdentity", "unknown").getString();
auto checkIsInspectedRemote = [ownerId, appId, deviceId]() {
return isNetworkInspected(ownerId, appId, deviceId);
};
auto& globalInspector = facebook::react::getInspectorInstance();
JSC_JSGlobalContextEnableDebugger(m_context, globalInspector, ownerId.c_str(), checkIsInspectedRemote);
}
installNativeHook<&JSCExecutor::nativeFlushQueueImmediate>("nativeFlushQueueImmediate");
installNativeHook<&JSCExecutor::nativeCallSyncHook>("nativeCallSyncHook");
installGlobalFunction(m_context, "nativeLoggingHook", JSCNativeHooks::loggingHook);
installGlobalFunction(m_context, "nativePerformanceNow", JSCNativeHooks::nowHook);
#if DEBUG
installGlobalFunction(m_context, "nativeInjectHMRUpdate", nativeInjectHMRUpdate);
#endif
addNativeTracingHooks(m_context);
addNativeTracingLegacyHooks(m_context);
addJSCMemoryHooks(m_context);
addJSCPerfStatsHooks(m_context);
JSCNativeHooks::installPerfHooks(m_context);
if (canUseSamplingProfiler(m_context)) {
initSamplingProfilerOnMainJSCThread(m_context);
}
}
bool JSCExecutor::isNetworkInspected(const std::string &owner, const std::string &app, const std::string &device) {
#ifdef WITH_FB_DBG_ATTACH_BEFORE_EXEC
auto connect_socket = [](int socket_desc, std::string address, int port) {
if (socket_desc < 0) {
::close(socket_desc);
return false;
}
struct timeval tv;
tv.tv_sec = 1;
tv.tv_usec = 0;
auto sock_opt_rcv_resp = setsockopt(socket_desc, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof(struct timeval));
if (sock_opt_rcv_resp < 0) {
::close(socket_desc);
return false;
}
auto sock_opt_snd_resp = setsockopt(socket_desc, SOL_SOCKET, SO_SNDTIMEO, (const char*)&tv, sizeof(struct timeval));
if (sock_opt_snd_resp < 0) {
::close(socket_desc);
return false;
}
struct sockaddr_in server;
server.sin_addr.s_addr = inet_addr(address.c_str());
server.sin_family = AF_INET;
server.sin_port = htons(port);
auto connect_resp = ::connect(socket_desc, (struct sockaddr *)&server, sizeof(server));
if (connect_resp < 0) {
::close(socket_desc);
return false;
}
return true;
};
int socket_desc = socket(AF_INET, SOCK_STREAM, 0);
if (!connect_socket(socket_desc, "127.0.0.1", 8082)) {
#if defined(__ANDROID__)
socket_desc = socket(AF_INET, SOCK_STREAM, 0);
if (!connect_socket(socket_desc, "10.0.2.2", 8082) /* emulator */) {
socket_desc = socket(AF_INET, SOCK_STREAM, 0);
if (!connect_socket(socket_desc, "10.0.3.2", 8082) /* genymotion */) {
return false;
}
}
#else //!defined(__ANDROID__)
return false;
#endif //defined(__ANDROID__)
}
std::string escapedOwner = folly::uriEscape<std::string>(owner, folly::UriEscapeMode::QUERY);
std::string escapedApp = folly::uriEscape<std::string>(app, folly::UriEscapeMode::QUERY);
std::string escapedDevice = folly::uriEscape<std::string>(device, folly::UriEscapeMode::QUERY);
std::string msg = folly::to<std::string>(
"GET /autoattach?title=", escapedOwner,
"&app=" , escapedApp,
"&device=" , escapedDevice,
" HTTP/1.1\r\n\r\n");
auto send_resp = ::send(socket_desc, msg.c_str(), msg.length(), 0);
if (send_resp < 0) {
::close(socket_desc);
return false;
}
char server_reply[200];
server_reply[199] = '\0';
auto recv_resp = ::recv(socket_desc, server_reply,
sizeof(server_reply) - 1, 0);
if (recv_resp < 0) {
::close(socket_desc);
return false;
}
std::string response(server_reply);
if (response.size() < 25) {
::close(socket_desc);
return false;
}
auto responseCandidate = response.substr(response.size() - 25);
auto found = responseCandidate.find("{\"autoattach\":true}") != std::string::npos;
::close(socket_desc);
return found;
#else //!WITH_FB_DBG_ATTACH_BEFORE_EXEC
return false;
#endif //WITH_FB_DBG_ATTACH_BEFORE_EXEC
}
void JSCExecutor::terminateOnJSVMThread() {
JSGlobalContextRef context = m_context;
m_context = nullptr;
Object::getGlobalObject(context).setPrivate(nullptr);
m_nativeModules.reset();
if (canUseInspector(context)) {
auto &globalInspector = facebook::react::getInspectorInstance();
JSC_JSGlobalContextDisableDebugger(context, globalInspector);
}
JSC_JSGlobalContextRelease(context);
}
#ifdef WITH_FBJSCEXTENSIONS
static const char* explainLoadSourceStatus(JSLoadSourceStatus status) {
switch (status) {
case JSLoadSourceIsCompiled:
return "No error encountered during source load";
case JSLoadSourceErrorOnRead:
return "Error reading source";
case JSLoadSourceIsNotCompiled:
return "Source is not compiled";
case JSLoadSourceErrorVersionMismatch:
return "Source version not supported";
default:
return "Bad error code";
}
}
#endif
// basename_r isn't in all iOS SDKs, so use this simple version instead.
static std::string simpleBasename(const std::string &path) {
size_t pos = path.rfind("/");
return (pos != std::string::npos) ? path.substr(pos) : path;
}
void JSCExecutor::loadApplicationScript(std::unique_ptr<const JSBigString> script, std::string sourceURL) {
SystraceSection s("JSCExecutor::loadApplicationScript",
"sourceURL", sourceURL);
std::string scriptName = simpleBasename(sourceURL);
ReactMarker::logTaggedMarker(ReactMarker::RUN_JS_BUNDLE_START, scriptName.c_str());
String jsSourceURL(m_context, sourceURL.c_str());
// TODO t15069155: reduce the number of overrides here
#ifdef WITH_FBJSCEXTENSIONS
if (auto fileStr = dynamic_cast<const JSBigFileString *>(script.get())) {
JSContextLock lock(m_context);
JSLoadSourceStatus jsStatus;
auto bcSourceCode = JSCreateSourceCodeFromFile(fileStr->fd(), jsSourceURL, nullptr, &jsStatus);
switch (jsStatus) {
case JSLoadSourceIsCompiled:
if (!bcSourceCode) {
throw std::runtime_error("Unexpected error opening compiled bundle");
}
evaluateSourceCode(m_context, bcSourceCode, jsSourceURL);
flush();
ReactMarker::logMarker(ReactMarker::CREATE_REACT_CONTEXT_STOP);
ReactMarker::logTaggedMarker(ReactMarker::RUN_JS_BUNDLE_STOP, scriptName.c_str());
return;
case JSLoadSourceErrorVersionMismatch:
throw RecoverableError(explainLoadSourceStatus(jsStatus));
case JSLoadSourceErrorOnRead:
case JSLoadSourceIsNotCompiled:
// Not bytecode, fall through.
break;
}
}
#elif defined(__APPLE__)
BundleHeader header;
memcpy(&header, script->c_str(), std::min(script->size(), sizeof(BundleHeader)));
auto scriptTag = parseTypeFromHeader(header);
if (scriptTag == ScriptTag::BCBundle) {
using file_ptr = std::unique_ptr<FILE, decltype(&fclose)>;
file_ptr source(fopen(sourceURL.c_str(), "r"), fclose);
int sourceFD = fileno(source.get());
JSValueRef jsError;
JSValueRef result = JSC_JSEvaluateBytecodeBundle(m_context, NULL, sourceFD, jsSourceURL, &jsError);
if (result == nullptr) {
throw JSException(m_context, jsError, jsSourceURL);
}
} else
#endif
{
String jsScript;
JSContextLock lock(m_context);
{
SystraceSection s_("JSCExecutor::loadApplicationScript-createExpectingAscii");
ReactMarker::logMarker(ReactMarker::JS_BUNDLE_STRING_CONVERT_START);
jsScript = adoptString(std::move(script));
ReactMarker::logMarker(ReactMarker::JS_BUNDLE_STRING_CONVERT_STOP);
}
SystraceSection s_("JSCExecutor::loadApplicationScript-evaluateScript");
evaluateScript(m_context, jsScript, jsSourceURL);
}
flush();
ReactMarker::logMarker(ReactMarker::CREATE_REACT_CONTEXT_STOP);
ReactMarker::logTaggedMarker(ReactMarker::RUN_JS_BUNDLE_STOP, scriptName.c_str());
}
void JSCExecutor::setBundleRegistry(std::unique_ptr<RAMBundleRegistry> bundleRegistry) {
if (!m_bundleRegistry) {
installNativeHook<&JSCExecutor::nativeRequire>("nativeRequire");
}
m_bundleRegistry = std::move(bundleRegistry);
}
void JSCExecutor::registerBundle(uint32_t bundleId, const std::string& bundlePath) {
if (m_bundleRegistry) {
m_bundleRegistry->registerBundle(bundleId, bundlePath);
} else {
auto sourceUrl = String(m_context, bundlePath.c_str());
auto source = adoptString(JSBigFileString::fromPath(bundlePath));
evaluateScript(m_context, source, sourceUrl);
}
}
void JSCExecutor::bindBridge() throw(JSException) {
SystraceSection s("JSCExecutor::bindBridge");
std::call_once(m_bindFlag, [this] {
auto global = Object::getGlobalObject(m_context);
auto batchedBridgeValue = global.getProperty("__fbBatchedBridge");
if (batchedBridgeValue.isUndefined()) {
auto requireBatchedBridge = global.getProperty("__fbRequireBatchedBridge");
if (!requireBatchedBridge.isUndefined()) {
batchedBridgeValue = requireBatchedBridge.asObject().callAsFunction({});
}
if (batchedBridgeValue.isUndefined()) {
throw JSException("Could not get BatchedBridge, make sure your bundle is packaged correctly");
}
}
auto batchedBridge = batchedBridgeValue.asObject();
m_callFunctionReturnFlushedQueueJS = batchedBridge.getProperty("callFunctionReturnFlushedQueue").asObject();
m_invokeCallbackAndReturnFlushedQueueJS = batchedBridge.getProperty("invokeCallbackAndReturnFlushedQueue").asObject();
m_flushedQueueJS = batchedBridge.getProperty("flushedQueue").asObject();
m_callFunctionReturnResultAndFlushedQueueJS = batchedBridge.getProperty("callFunctionReturnResultAndFlushedQueue").asObject();
});
}
void JSCExecutor::callNativeModules(Value&& value) {
SystraceSection s("JSCExecutor::callNativeModules");
// If this fails, you need to pass a fully functional delegate with a
// module registry to the factory/ctor.
CHECK(m_delegate) << "Attempting to use native modules without a delegate";
try {
auto calls = value.toJSONString();
m_delegate->callNativeModules(*this, folly::parseJson(calls), true);
} catch (...) {
std::string message = "Error in callNativeModules()";
try {
message += ":" + value.toString().str();
} catch (...) {
// ignored
}
std::throw_with_nested(std::runtime_error(message));
}
}
void JSCExecutor::flush() {
SystraceSection s("JSCExecutor::flush");
if (m_flushedQueueJS) {
callNativeModules(m_flushedQueueJS->callAsFunction({}));
return;
}
// When a native module is called from JS, BatchedBridge.enqueueNativeCall()
// is invoked. For that to work, require('BatchedBridge') has to be called,
// and when that happens, __fbBatchedBridge is set as a side effect.
auto global = Object::getGlobalObject(m_context);
auto batchedBridgeValue = global.getProperty("__fbBatchedBridge");
// So here, if __fbBatchedBridge doesn't exist, then we know no native calls
// have happened, and we were able to determine this without forcing
// BatchedBridge to be loaded as a side effect.
if (!batchedBridgeValue.isUndefined()) {
// If calls were made, we bind to the JS bridge methods, and use them to
// get the pending queue of native calls.
bindBridge();
callNativeModules(m_flushedQueueJS->callAsFunction({}));
} else if (m_delegate) {
// If we have a delegate, we need to call it; we pass a null list to
// callNativeModules, since we know there are no native calls, without
// calling into JS again. If no calls were made and there's no delegate,
// nothing happens, which is correct.
callNativeModules(Value::makeNull(m_context));
}
}
void JSCExecutor::callFunction(const std::string& moduleId, const std::string& methodId, const folly::dynamic& arguments) {
SystraceSection s("JSCExecutor::callFunction");
// This weird pattern is because Value is not default constructible.
// The lambda is inlined, so there's no overhead.
auto result = [&] {
JSContextLock lock(m_context);
try {
if (!m_callFunctionReturnResultAndFlushedQueueJS) {
bindBridge();
}
return m_callFunctionReturnFlushedQueueJS->callAsFunction({
Value(m_context, String::createExpectingAscii(m_context, moduleId)),
Value(m_context, String::createExpectingAscii(m_context, methodId)),
Value::fromDynamic(m_context, std::move(arguments))
});
} catch (...) {
std::throw_with_nested(
std::runtime_error("Error calling " + moduleId + "." + methodId));
}
}();
callNativeModules(std::move(result));
}
void JSCExecutor::invokeCallback(const double callbackId, const folly::dynamic& arguments) {
SystraceSection s("JSCExecutor::invokeCallback");
auto result = [&] {
JSContextLock lock(m_context);
try {
if (!m_invokeCallbackAndReturnFlushedQueueJS) {
bindBridge();
}
return m_invokeCallbackAndReturnFlushedQueueJS->callAsFunction({
Value::makeNumber(m_context, callbackId),
Value::fromDynamic(m_context, std::move(arguments))
});
} catch (...) {
std::throw_with_nested(
std::runtime_error(folly::to<std::string>("Error invoking callback ", callbackId)));
}
}();
callNativeModules(std::move(result));
}
Value JSCExecutor::callFunctionSyncWithValue(
const std::string& module, const std::string& method, Value args) {
SystraceSection s("JSCExecutor::callFunction");
Object result = [&] {
JSContextLock lock(m_context);
if (!m_callFunctionReturnResultAndFlushedQueueJS) {
bindBridge();
}
return m_callFunctionReturnResultAndFlushedQueueJS->callAsFunction({
Value(m_context, String::createExpectingAscii(m_context, module)),
Value(m_context, String::createExpectingAscii(m_context, method)),
std::move(args),
}).asObject();
}();
Value length = result.getProperty("length");
if (!length.isNumber() || length.asInteger() != 2) {
std::runtime_error("Return value of a callFunction must be an array of size 2");
}
callNativeModules(result.getPropertyAtIndex(1));
return result.getPropertyAtIndex(0);
}
void JSCExecutor::setGlobalVariable(std::string propName, std::unique_ptr<const JSBigString> jsonValue) {
try {
SystraceSection s("JSCExecutor::setGlobalVariable", "propName", propName);
auto valueToInject = Value::fromJSON(adoptString(std::move(jsonValue)));
Object::getGlobalObject(m_context).setProperty(propName.c_str(), valueToInject);
} catch (...) {
std::throw_with_nested(std::runtime_error("Error setting global variable: " + propName));
}
}
std::string JSCExecutor::getDescription() {
#if defined(__APPLE__)
if (isCustomJSCPtr(m_context)) {
return "Custom JSC";
} else {
return "System JSC";
}
#else
return "JSC";
#endif
}
String JSCExecutor::adoptString(std::unique_ptr<const JSBigString> script) {
#if defined(WITH_FBJSCEXTENSIONS)
const JSBigString* string = script.release();
auto jsString = JSStringCreateAdoptingExternal(string->c_str(), string->size(), (void*)string, [](void* s) {
delete static_cast<JSBigString*>(s);
});
return String::adopt(m_context, jsString);
#else
return script->isAscii()
? String::createExpectingAscii(m_context, script->c_str(), script->size())
: String(m_context, script->c_str());
#endif
}
void* JSCExecutor::getJavaScriptContext() {
return m_context;
}
bool JSCExecutor::isInspectable() {
return canUseInspector(m_context);
}
#ifdef WITH_JSC_MEMORY_PRESSURE
void JSCExecutor::handleMemoryPressure(int pressureLevel) {
JSHandleMemoryPressure(this, m_context, static_cast<JSMemoryPressure>(pressureLevel));
}
#endif
void JSCExecutor::flushQueueImmediate(Value&& queue) {
auto queueStr = queue.toJSONString();
m_delegate->callNativeModules(*this, folly::parseJson(queueStr), false);
}
void JSCExecutor::loadModule(uint32_t bundleId, uint32_t moduleId) {
auto module = m_bundleRegistry->getModule(bundleId, moduleId);
auto sourceUrl = String::createExpectingAscii(m_context, module.name);
auto source = adoptString(std::unique_ptr<JSBigString>(new JSBigStdString(module.code)));
evaluateScript(m_context, source, sourceUrl);
}
// Native JS hooks
template<JSValueRef (JSCExecutor::*method)(size_t, const JSValueRef[])>
void JSCExecutor::installNativeHook(const char* name) {
installGlobalFunction(m_context, name, exceptionWrapMethod<method>());
}
JSValueRef JSCExecutor::getNativeModule(JSObjectRef object, JSStringRef propertyName) {
if (JSC_JSStringIsEqualToUTF8CString(m_context, propertyName, "name")) {
return Value(m_context, String(m_context, "NativeModules"));
}
return m_nativeModules.getModule(m_context, propertyName);
}
JSValueRef JSCExecutor::getNativeExtension(JSObjectRef object, JSStringRef propertyName) {
if (m_nativeExtensionsProvider) {
folly::dynamic value = m_nativeExtensionsProvider(String::ref(m_context, propertyName).str());
return Value::fromDynamic(m_context, std::move(value));
}
return JSC_JSValueMakeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeRequire(
size_t argumentCount,
const JSValueRef arguments[]) {
uint32_t bundleId, moduleId;
std::tie(bundleId, moduleId) = parseNativeRequireParameters(m_context, arguments, argumentCount);
ReactMarker::logMarker(ReactMarker::NATIVE_REQUIRE_START);
loadModule(bundleId, moduleId);
ReactMarker::logMarker(ReactMarker::NATIVE_REQUIRE_STOP);
return Value::makeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeFlushQueueImmediate(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 1) {
throw std::invalid_argument("Got wrong number of args");
}
flushQueueImmediate(Value(m_context, arguments[0]));
return Value::makeUndefined(m_context);
}
JSValueRef JSCExecutor::nativeCallSyncHook(
size_t argumentCount,
const JSValueRef arguments[]) {
if (argumentCount != 3) {
throw std::invalid_argument("Got wrong number of args");
}
unsigned int moduleId = Value(m_context, arguments[0]).asUnsignedInteger();
unsigned int methodId = Value(m_context, arguments[1]).asUnsignedInteger();
folly::dynamic args = folly::parseJson(Value(m_context, arguments[2]).toJSONString());
if (!args.isArray()) {
throw std::invalid_argument(
folly::to<std::string>("method parameters should be array, but are ", args.typeName()));
}
MethodCallResult result = m_delegate->callSerializableNativeHook(
*this,
moduleId,
methodId,
std::move(args));
if (!result.hasValue()) {
return Value::makeUndefined(m_context);
}
return Value::fromDynamic(m_context, result.value());
}
} }
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