406 lines
11 KiB
Objective-C
406 lines
11 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTBridge.h"
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#import "RCTBridge+Private.h"
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#import <objc/runtime.h>
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#import "RCTConvert.h"
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#import "RCTEventDispatcher.h"
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#if RCT_ENABLE_INSPECTOR
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#import "RCTInspectorDevServerHelper.h"
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#endif
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#import "RCTLog.h"
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#import "RCTModuleData.h"
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#import "RCTPerformanceLogger.h"
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#import "RCTProfile.h"
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#import "RCTReloadCommand.h"
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#import "RCTUtils.h"
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NSString *const RCTJavaScriptWillStartLoadingNotification = @"RCTJavaScriptWillStartLoadingNotification";
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NSString *const RCTJavaScriptDidLoadNotification = @"RCTJavaScriptDidLoadNotification";
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NSString *const RCTJavaScriptDidFailToLoadNotification = @"RCTJavaScriptDidFailToLoadNotification";
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NSString *const RCTDidInitializeModuleNotification = @"RCTDidInitializeModuleNotification";
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NSString *const RCTBridgeWillReloadNotification = @"RCTBridgeWillReloadNotification";
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NSString *const RCTBridgeWillDownloadScriptNotification = @"RCTBridgeWillDownloadScriptNotification";
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NSString *const RCTBridgeDidDownloadScriptNotification = @"RCTBridgeDidDownloadScriptNotification";
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NSString *const RCTBridgeDidDownloadScriptNotificationSourceKey = @"source";
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static NSMutableArray<Class> *RCTModuleClasses;
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NSArray<Class> *RCTGetModuleClasses(void)
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{
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return RCTModuleClasses;
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}
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void RCTFBQuickPerformanceLoggerConfigureHooks(__unused JSGlobalContextRef ctx) { }
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/**
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* Register the given class as a bridge module. All modules must be registered
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* prior to the first bridge initialization.
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*/
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void RCTRegisterModule(Class);
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void RCTRegisterModule(Class moduleClass)
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{
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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RCTModuleClasses = [NSMutableArray new];
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});
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RCTAssert([moduleClass conformsToProtocol:@protocol(RCTBridgeModule)],
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@"%@ does not conform to the RCTBridgeModule protocol",
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moduleClass);
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// Register module
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[RCTModuleClasses addObject:moduleClass];
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}
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/**
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* This function returns the module name for a given class.
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*/
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NSString *RCTBridgeModuleNameForClass(Class cls)
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{
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#if RCT_DEBUG
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RCTAssert([cls conformsToProtocol:@protocol(RCTBridgeModule)],
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@"Bridge module `%@` does not conform to RCTBridgeModule", cls);
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#endif
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NSString *name = [cls moduleName];
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if (name.length == 0) {
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name = NSStringFromClass(cls);
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}
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if ([name hasPrefix:@"RK"]) {
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name = [name substringFromIndex:2];
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} else if ([name hasPrefix:@"RCT"]) {
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name = [name substringFromIndex:3];
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}
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return name;
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}
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#if RCT_DEBUG
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void RCTVerifyAllModulesExported(NSArray *extraModules)
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{
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// Check for unexported modules
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unsigned int classCount;
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Class *classes = objc_copyClassList(&classCount);
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NSMutableSet *moduleClasses = [NSMutableSet new];
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[moduleClasses addObjectsFromArray:RCTGetModuleClasses()];
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[moduleClasses addObjectsFromArray:[extraModules valueForKeyPath:@"class"]];
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for (unsigned int i = 0; i < classCount; i++) {
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Class cls = classes[i];
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Class superclass = cls;
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while (superclass) {
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if (class_conformsToProtocol(superclass, @protocol(RCTBridgeModule))) {
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if ([moduleClasses containsObject:cls]) {
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break;
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}
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// Verify it's not a super-class of one of our moduleClasses
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BOOL isModuleSuperClass = NO;
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for (Class moduleClass in moduleClasses) {
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if ([moduleClass isSubclassOfClass:cls]) {
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isModuleSuperClass = YES;
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break;
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}
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}
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if (isModuleSuperClass) {
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break;
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}
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RCTLogWarn(@"Class %@ was not exported. Did you forget to use RCT_EXPORT_MODULE()?", cls);
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break;
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}
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superclass = class_getSuperclass(superclass);
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}
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}
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free(classes);
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}
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#endif
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@interface RCTBridge () <RCTReloadListener>
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@end
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@implementation RCTBridge
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{
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NSURL *_delegateBundleURL;
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}
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dispatch_queue_t RCTJSThread;
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+ (void)initialize
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{
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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// Set up JS thread
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RCTJSThread = (id)kCFNull;
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});
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}
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static RCTBridge *RCTCurrentBridgeInstance = nil;
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/**
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* The last current active bridge instance. This is set automatically whenever
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* the bridge is accessed. It can be useful for static functions or singletons
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* that need to access the bridge for purposes such as logging, but should not
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* be relied upon to return any particular instance, due to race conditions.
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*/
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+ (instancetype)currentBridge
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{
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return RCTCurrentBridgeInstance;
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}
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+ (void)setCurrentBridge:(RCTBridge *)currentBridge
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{
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RCTCurrentBridgeInstance = currentBridge;
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}
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- (instancetype)initWithDelegate:(id<RCTBridgeDelegate>)delegate
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launchOptions:(NSDictionary *)launchOptions
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{
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return [self initWithDelegate:delegate
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bundleURL:nil
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moduleProvider:nil
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launchOptions:launchOptions];
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}
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- (instancetype)initWithBundleURL:(NSURL *)bundleURL
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moduleProvider:(RCTBridgeModuleListProvider)block
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launchOptions:(NSDictionary *)launchOptions
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{
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return [self initWithDelegate:nil
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bundleURL:bundleURL
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moduleProvider:block
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launchOptions:launchOptions];
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}
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- (instancetype)initWithDelegate:(id<RCTBridgeDelegate>)delegate
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bundleURL:(NSURL *)bundleURL
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moduleProvider:(RCTBridgeModuleListProvider)block
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launchOptions:(NSDictionary *)launchOptions
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{
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if (self = [super init]) {
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_delegate = delegate;
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_bundleURL = bundleURL;
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_moduleProvider = block;
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_launchOptions = [launchOptions copy];
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[self setUp];
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}
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return self;
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}
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RCT_NOT_IMPLEMENTED(- (instancetype)init)
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- (void)dealloc
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{
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/**
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* This runs only on the main thread, but crashes the subclass
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* RCTAssertMainQueue();
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*/
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[self invalidate];
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}
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- (void)didReceiveReloadCommand
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{
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[self reload];
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}
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- (NSArray<Class> *)moduleClasses
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{
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return self.batchedBridge.moduleClasses;
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}
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- (id)moduleForName:(NSString *)moduleName
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{
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return [self.batchedBridge moduleForName:moduleName];
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}
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- (id)moduleForClass:(Class)moduleClass
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{
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return [self moduleForName:RCTBridgeModuleNameForClass(moduleClass)];
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}
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- (NSArray *)modulesConformingToProtocol:(Protocol *)protocol
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{
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NSMutableArray *modules = [NSMutableArray new];
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for (Class moduleClass in self.moduleClasses) {
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if ([moduleClass conformsToProtocol:protocol]) {
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id module = [self moduleForClass:moduleClass];
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if (module) {
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[modules addObject:module];
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}
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}
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}
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return [modules copy];
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}
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- (BOOL)moduleIsInitialized:(Class)moduleClass
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{
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return [self.batchedBridge moduleIsInitialized:moduleClass];
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}
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- (void)reload
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{
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#if RCT_ENABLE_INSPECTOR
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// Disable debugger to resume the JsVM & avoid thread locks while reloading
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[RCTInspectorDevServerHelper disableDebugger];
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#endif
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[[NSNotificationCenter defaultCenter] postNotificationName:RCTBridgeWillReloadNotification object:self];
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/**
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* Any thread
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*/
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dispatch_async(dispatch_get_main_queue(), ^{
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[self invalidate];
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[self setUp];
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});
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}
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- (void)requestReload
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{
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[self reload];
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}
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- (Class)bridgeClass
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{
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// In order to facilitate switching between bridges with only build
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// file changes, this uses reflection to check which bridges are
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// available. This is a short-term hack until RCTBatchedBridge is
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// removed.
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Class batchedBridgeClass = objc_lookUpClass("RCTBatchedBridge");
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Class cxxBridgeClass = objc_lookUpClass("RCTCxxBridge");
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Class implClass = nil;
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if ([self.delegate respondsToSelector:@selector(shouldBridgeUseCxxBridge:)]) {
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if ([self.delegate shouldBridgeUseCxxBridge:self]) {
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implClass = cxxBridgeClass;
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} else {
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implClass = batchedBridgeClass;
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}
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} else if (cxxBridgeClass != nil) {
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implClass = cxxBridgeClass;
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} else if (batchedBridgeClass != nil) {
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implClass = batchedBridgeClass;
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}
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RCTAssert(implClass != nil, @"No bridge implementation is available, giving up.");
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return implClass;
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}
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- (void)setUp
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{
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RCT_PROFILE_BEGIN_EVENT(0, @"-[RCTBridge setUp]", nil);
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_performanceLogger = [RCTPerformanceLogger new];
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[_performanceLogger markStartForTag:RCTPLBridgeStartup];
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[_performanceLogger markStartForTag:RCTPLTTI];
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Class bridgeClass = self.bridgeClass;
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#if RCT_DEV
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RCTExecuteOnMainQueue(^{
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RCTRegisterReloadCommandListener(self);
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});
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#endif
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// Only update bundleURL from delegate if delegate bundleURL has changed
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NSURL *previousDelegateURL = _delegateBundleURL;
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_delegateBundleURL = [self.delegate sourceURLForBridge:self];
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if (_delegateBundleURL && ![_delegateBundleURL isEqual:previousDelegateURL]) {
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_bundleURL = _delegateBundleURL;
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}
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// Sanitize the bundle URL
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_bundleURL = [RCTConvert NSURL:_bundleURL.absoluteString];
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self.batchedBridge = [[bridgeClass alloc] initWithParentBridge:self];
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[self.batchedBridge start];
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RCT_PROFILE_END_EVENT(RCTProfileTagAlways, @"");
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}
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- (BOOL)isLoading
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{
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return self.batchedBridge.loading;
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}
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- (BOOL)isValid
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{
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return self.batchedBridge.valid;
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}
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- (BOOL)isBatchActive
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{
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return [_batchedBridge isBatchActive];
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}
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- (void)invalidate
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{
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RCTBridge *batchedBridge = self.batchedBridge;
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self.batchedBridge = nil;
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if (batchedBridge) {
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RCTExecuteOnMainQueue(^{
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[batchedBridge invalidate];
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});
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}
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}
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- (void)registerAdditionalModuleClasses:(NSArray<Class> *)modules
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{
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[self.batchedBridge registerAdditionalModuleClasses:modules];
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}
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- (void)enqueueJSCall:(NSString *)moduleDotMethod args:(NSArray *)args
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{
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NSArray<NSString *> *ids = [moduleDotMethod componentsSeparatedByString:@"."];
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NSString *module = ids[0];
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NSString *method = ids[1];
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[self enqueueJSCall:module method:method args:args completion:NULL];
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}
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- (void)enqueueJSCall:(NSString *)module method:(NSString *)method args:(NSArray *)args completion:(dispatch_block_t)completion
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{
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[self.batchedBridge enqueueJSCall:module method:method args:args completion:completion];
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}
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- (void)enqueueCallback:(NSNumber *)cbID args:(NSArray *)args
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{
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[self.batchedBridge enqueueCallback:cbID args:args];
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}
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- (JSValue *)callFunctionOnModule:(NSString *)module
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method:(NSString *)method
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arguments:(NSArray *)arguments
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error:(NSError **)error
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{
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return [self.batchedBridge callFunctionOnModule:module method:method arguments:arguments error:error];
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}
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- (void)registerSegmentWithId:(NSUInteger)segmentId path:(NSString *)path
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{
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[self.batchedBridge registerSegmentWithId:segmentId path:path];
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}
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- (JSGlobalContextRef)jsContextRef
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{
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return [self.batchedBridge jsContextRef];
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}
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@end
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