818 lines
27 KiB
Objective-C
818 lines
27 KiB
Objective-C
// Copyright 2004-present Facebook. All Rights Reserved.
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#import "RCTBridge.h"
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#import <dlfcn.h>
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#import <objc/message.h>
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#import <objc/runtime.h>
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#import <mach-o/dyld.h>
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#import <mach-o/getsect.h>
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#import "RCTConvert.h"
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#import "RCTEventDispatcher.h"
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#import "RCTLog.h"
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#import "RCTSparseArray.h"
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#import "RCTUtils.h"
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/**
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* Must be kept in sync with `MessageQueue.js`.
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*/
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typedef NS_ENUM(NSUInteger, RCTBridgeFields) {
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RCTBridgeFieldRequestModuleIDs = 0,
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RCTBridgeFieldMethodIDs,
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RCTBridgeFieldParamss,
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RCTBridgeFieldResponseCBIDs,
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RCTBridgeFieldResponseReturnValues,
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RCTBridgeFieldFlushDateMillis
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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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static NSString *RCTModuleNameForClass(Class cls)
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{
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return [cls respondsToSelector:@selector(moduleName)] ? [cls moduleName] : NSStringFromClass(cls);
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}
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/**
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* This function scans all classes available at runtime and returns an array
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* of all JSMethods registered.
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*/
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static NSArray *RCTJSMethods(void)
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{
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static NSArray *JSMethods;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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NSMutableSet *uniqueMethods = [NSMutableSet set];
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RCTEnumerateClasses(^(__unsafe_unretained Class cls) {
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if (RCTClassOverridesClassMethod(cls, @selector(JSMethods))) {
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[uniqueMethods addObjectsFromArray:[cls JSMethods]];
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}
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});
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JSMethods = [uniqueMethods allObjects];
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});
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return JSMethods;
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}
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/**
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* This function scans all classes available at runtime and returns an array
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* of all classes that implement the RTCBridgeModule protocol.
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*/
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static NSArray *RCTModuleNamesByID;
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static NSArray *RCTBridgeModuleClassesByModuleID(void)
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{
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static NSArray *modules;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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modules = [NSMutableArray array];
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RCTModuleNamesByID = [NSMutableArray array];
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RCTEnumerateClasses(^(__unsafe_unretained Class cls) {
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if ([cls conformsToProtocol:@protocol(RCTBridgeModule)]) {
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// Add module
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[(NSMutableArray *)modules addObject:cls];
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// Add module name
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NSString *moduleName = RCTModuleNameForClass(cls);
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[(NSMutableArray *)RCTModuleNamesByID addObject:moduleName];
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}
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});
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modules = [modules copy];
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RCTModuleNamesByID = [RCTModuleNamesByID copy];
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});
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return modules;
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}
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@interface RCTBridge ()
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- (void)_invokeAndProcessModule:(NSString *)module
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method:(NSString *)method
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arguments:(NSArray *)args;
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@end
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/**
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* This private class is used as a container for exported method info
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*/
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@interface RCTModuleMethod : NSObject
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@property (nonatomic, copy, readonly) NSString *moduleClassName;
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@property (nonatomic, copy, readonly) NSString *JSMethodName;
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@end
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@implementation RCTModuleMethod
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{
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BOOL _isClassMethod;
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Class _moduleClass;
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SEL _selector;
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NSMethodSignature *_methodSignature;
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NSArray *_argumentBlocks;
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NSString *_methodName;
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}
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- (instancetype)initWithMethodName:(NSString *)methodName
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JSMethodName:(NSString *)JSMethodName
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{
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if ((self = [super init])) {
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_methodName = methodName;
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NSArray *parts = [[methodName substringWithRange:NSMakeRange(2, methodName.length - 3)] componentsSeparatedByString:@" "];
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// Parse class and method
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_moduleClassName = parts[0];
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NSRange categoryRange = [_moduleClassName rangeOfString:@"("];
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if (categoryRange.length)
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{
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_moduleClassName = [_moduleClassName substringToIndex:categoryRange.location];
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}
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// Extract class and method details
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_isClassMethod = [methodName characterAtIndex:0] == '+';
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_moduleClass = NSClassFromString(_moduleClassName);
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_selector = NSSelectorFromString(parts[1]);
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_JSMethodName = JSMethodName ?: [NSStringFromSelector(_selector) componentsSeparatedByString:@":"][0];
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#if DEBUG
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// Sanity check
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RCTAssert([_moduleClass conformsToProtocol:@protocol(RCTBridgeModule)],
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@"You are attempting to export the method %@, but %@ does not \
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conform to the RCTBridgeModule Protocol", methodName, _moduleClassName);
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#endif
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// Get method signature
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_methodSignature = _isClassMethod ?
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[_moduleClass methodSignatureForSelector:_selector] :
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[_moduleClass instanceMethodSignatureForSelector:_selector];
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// Process arguments
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NSUInteger numberOfArguments = _methodSignature.numberOfArguments;
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NSMutableArray *argumentBlocks = [[NSMutableArray alloc] initWithCapacity:numberOfArguments - 2];
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for (NSUInteger i = 2; i < numberOfArguments; i++) {
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const char *argumentType = [_methodSignature getArgumentTypeAtIndex:i];
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switch (argumentType[0]) {
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#define RCT_ARG_BLOCK(_logic) \
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[argumentBlocks addObject:^(RCTBridge *bridge, NSInvocation *invocation, NSUInteger index, id json) { \
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_logic \
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[invocation setArgument:&value atIndex:index]; \
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}]; \
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#define RCT_CASE(_value, _class, _logic) \
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case _value: { \
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RCT_ARG_BLOCK( \
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if (json && ![json isKindOfClass:[_class class]]) { \
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RCTLogError(@"Argument %tu (%@) of %@.%@ should be of type %@", index, \
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json, RCTModuleNameForClass(_moduleClass), _JSMethodName, [_class class]); \
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return; \
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} \
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_logic \
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) \
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break; \
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}
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RCT_CASE(':', NSString, SEL value = NSSelectorFromString(json); );
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RCT_CASE('*', NSString, const char *value = [json UTF8String]; );
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#define RCT_SIMPLE_CASE(_value, _type, _selector) \
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case _value: { \
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RCT_ARG_BLOCK( \
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if (json && ![json respondsToSelector:@selector(_selector)]) { \
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RCTLogError(@"Argument %tu (%@) of %@.%@ does not respond to selector: %@", \
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index, json, RCTModuleNameForClass(_moduleClass), _JSMethodName, @#_selector); \
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return; \
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} \
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_type value = [json _selector]; \
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) \
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break; \
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}
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RCT_SIMPLE_CASE('c', char, charValue)
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RCT_SIMPLE_CASE('C', unsigned char, unsignedCharValue)
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RCT_SIMPLE_CASE('s', short, shortValue)
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RCT_SIMPLE_CASE('S', unsigned short, unsignedShortValue)
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RCT_SIMPLE_CASE('i', int, intValue)
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RCT_SIMPLE_CASE('I', unsigned int, unsignedIntValue)
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RCT_SIMPLE_CASE('l', long, longValue)
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RCT_SIMPLE_CASE('L', unsigned long, unsignedLongValue)
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RCT_SIMPLE_CASE('q', long long, longLongValue)
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RCT_SIMPLE_CASE('Q', unsigned long long, unsignedLongLongValue)
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RCT_SIMPLE_CASE('f', float, floatValue)
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RCT_SIMPLE_CASE('d', double, doubleValue)
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RCT_SIMPLE_CASE('B', BOOL, boolValue)
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default: {
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static const char *blockType = @encode(typeof(^{}));
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if (!strcmp(argumentType, blockType)) {
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RCT_ARG_BLOCK(
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if (json && ![json isKindOfClass:[NSNumber class]]) {
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RCTLogError(@"Argument %tu (%@) of %@.%@ should be a number", index,
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json, RCTModuleNameForClass(_moduleClass), _JSMethodName);
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return;
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}
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// Marked as autoreleasing, because NSInvocation doesn't retain arguments
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__autoreleasing id value = (json ? ^(NSArray *args) {
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[bridge _invokeAndProcessModule:@"BatchedBridge"
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method:@"invokeCallbackAndReturnFlushedQueue"
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arguments:@[json, args]];
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} : ^(NSArray *unused) {});
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)
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} else {
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RCT_ARG_BLOCK( id value = json; )
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}
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break;
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}
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}
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}
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_argumentBlocks = [argumentBlocks copy];
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}
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return self;
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}
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- (void)invokeWithBridge:(RCTBridge *)bridge
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module:(id)module
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arguments:(NSArray *)arguments
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{
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#if DEBUG
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// Sanity check
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RCTAssert([module class] == _moduleClass, @"Attempted to invoke method \
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%@ on a module of class %@", _methodName, [module class]);
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#endif
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// Safety check
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if (arguments.count != _argumentBlocks.count) {
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RCTLogError(@"%@.%@ was called with %zd arguments, but expects %zd",
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RCTModuleNameForClass(_moduleClass), _JSMethodName,
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arguments.count, _argumentBlocks.count);
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return;
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}
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// Create invocation (we can't re-use this as it wouldn't be thread-safe)
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NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:_methodSignature];
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[invocation setArgument:&_selector atIndex:1];
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// Set arguments
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NSUInteger index = 0;
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for (id json in arguments) {
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id arg = (json == [NSNull null]) ? nil : json;
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void (^block)(RCTBridge *, NSInvocation *, NSUInteger, id) = _argumentBlocks[index];
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block(bridge, invocation, index + 2, arg);
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index ++;
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}
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// Invoke method
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[invocation invokeWithTarget:_isClassMethod ? [module class] : module];
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}
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- (NSString *)description
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{
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return [NSString stringWithFormat:@"<%@: %p; exports %@ as %@;>", NSStringFromClass(self.class), self, _methodName, _JSMethodName];
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}
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@end
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/**
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* This function parses the exported methods inside RCTBridgeModules and
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* generates an array of arrays of RCTModuleMethod objects, keyed
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* by module index.
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*/
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static RCTSparseArray *RCTExportedMethodsByModuleID(void)
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{
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static RCTSparseArray *methodsByModuleID;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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Dl_info info;
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dladdr(&RCTExportedMethodsByModuleID, &info);
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#ifdef __LP64__
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typedef uint64_t RCTExportValue;
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typedef struct section_64 RCTExportSection;
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#define RCTGetSectByNameFromHeader getsectbynamefromheader_64
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#else
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typedef uint32_t RCTExportValue;
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typedef struct section RCTExportSection;
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#define RCTGetSectByNameFromHeader getsectbynamefromheader
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#endif
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const RCTExportValue mach_header = (RCTExportValue)info.dli_fbase;
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const RCTExportSection *section = RCTGetSectByNameFromHeader((void *)mach_header, "__DATA", "RCTExport");
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if (section == NULL) {
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return;
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}
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NSArray *classes = RCTBridgeModuleClassesByModuleID();
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NSMutableDictionary *methodsByModuleClassName = [NSMutableDictionary dictionaryWithCapacity:[classes count]];
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for (RCTExportValue addr = section->offset;
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addr < section->offset + section->size;
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addr += sizeof(const char **) * 2) {
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// Get data entry
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const char **entries = (const char **)(mach_header + addr);
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// Create method
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RCTModuleMethod *moduleMethod =
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[[RCTModuleMethod alloc] initWithMethodName:@(entries[0])
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JSMethodName:strlen(entries[1]) ? @(entries[1]) : nil];
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// Cache method
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NSArray *methods = methodsByModuleClassName[moduleMethod.moduleClassName];
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methodsByModuleClassName[moduleMethod.moduleClassName] =
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methods ? [methods arrayByAddingObject:moduleMethod] : @[moduleMethod];
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}
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methodsByModuleID = [[RCTSparseArray alloc] initWithCapacity:[classes count]];
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[classes enumerateObjectsUsingBlock:^(Class moduleClass, NSUInteger moduleID, BOOL *stop) {
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methodsByModuleID[moduleID] = methodsByModuleClassName[NSStringFromClass(moduleClass)];
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}];
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});
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return methodsByModuleID;
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}
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/**
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* This constructs the remote modules configuration data structure,
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* which represents the native modules and methods that will be called
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* by JS. A numeric ID is assigned to each module and method, which will
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* be used to communicate via the bridge. The structure of each
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* module is as follows:
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*
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* "ModuleName1": {
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* "moduleID": 0,
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* "methods": {
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* "methodName1": {
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* "methodID": 0,
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* "type": "remote"
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* },
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* "methodName2": {
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* "methodID": 1,
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* "type": "remote"
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* },
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* etc...
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* },
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* "constants": {
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* ...
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* }
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* },
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* etc...
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*/
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static NSDictionary *RCTRemoteModulesConfig(NSDictionary *modulesByName)
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{
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static NSMutableDictionary *remoteModuleConfigByClassName;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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remoteModuleConfigByClassName = [[NSMutableDictionary alloc] init];
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[RCTBridgeModuleClassesByModuleID() enumerateObjectsUsingBlock:^(Class moduleClass, NSUInteger moduleID, BOOL *stop) {
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NSArray *methods = RCTExportedMethodsByModuleID()[moduleID];
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NSMutableDictionary *methodsByName = [NSMutableDictionary dictionaryWithCapacity:methods.count];
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[methods enumerateObjectsUsingBlock:^(RCTModuleMethod *method, NSUInteger methodID, BOOL *_stop) {
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methodsByName[method.JSMethodName] = @{
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@"methodID": @(methodID),
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@"type": @"remote",
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};
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}];
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NSDictionary *module = @{
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@"moduleID": @(moduleID),
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@"methods": methodsByName
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};
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remoteModuleConfigByClassName[NSStringFromClass(moduleClass)] = module;
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}];
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});
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// Create config
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NSMutableDictionary *moduleConfig = [[NSMutableDictionary alloc] init];
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[modulesByName enumerateKeysAndObjectsUsingBlock:^(NSString *moduleName, id<RCTBridgeModule> module, BOOL *stop) {
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// Add constants
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NSMutableDictionary *config = remoteModuleConfigByClassName[NSStringFromClass([module class])];
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if ([module respondsToSelector:@selector(constantsToExport)]) {
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NSDictionary *constants = [module constantsToExport];
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if (constants) {
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NSMutableDictionary *mutableConfig = [NSMutableDictionary dictionaryWithDictionary:config];
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mutableConfig[@"constants"] = constants; // There's no real need to copy this
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config = mutableConfig; // Nor this - receiver is unlikely to mutate it
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}
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}
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moduleConfig[moduleName] = config;
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}];
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return moduleConfig;
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}
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/**
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* As above, but for local modules/methods, which represent JS classes
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* and methods that will be called by the native code via the bridge.
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* Structure is essentially the same as for remote modules:
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*
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* "ModuleName1": {
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* "moduleID": 0,
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* "methods": {
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* "methodName1": {
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* "methodID": 0,
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* "type": "local"
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* },
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* "methodName2": {
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* "methodID": 1,
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* "type": "local"
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* },
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* etc...
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* }
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* },
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* etc...
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*/
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static NSMutableDictionary *RCTLocalModuleIDs;
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static NSMutableDictionary *RCTLocalMethodIDs;
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static NSDictionary *RCTLocalModulesConfig()
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{
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static NSMutableDictionary *localModules;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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RCTLocalModuleIDs = [[NSMutableDictionary alloc] init];
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RCTLocalMethodIDs = [[NSMutableDictionary alloc] init];
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localModules = [[NSMutableDictionary alloc] init];
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for (NSString *moduleDotMethod in RCTJSMethods()) {
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NSArray *parts = [moduleDotMethod componentsSeparatedByString:@"."];
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RCTCAssert(parts.count == 2, @"'%@' is not a valid JS method definition - expected 'Module.method' format.", moduleDotMethod);
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// Add module if it doesn't already exist
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NSString *moduleName = parts[0];
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NSDictionary *module = localModules[moduleName];
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if (!module) {
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module = @{
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@"moduleID": @(localModules.count),
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@"methods": [[NSMutableDictionary alloc] init]
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};
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localModules[moduleName] = module;
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}
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// Add method if it doesn't already exist
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NSString *methodName = parts[1];
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NSMutableDictionary *methods = module[@"methods"];
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if (!methods[methodName]) {
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methods[methodName] = @{
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@"methodID": @(methods.count),
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@"type": @"local"
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};
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}
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// Add module and method lookup
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RCTLocalModuleIDs[moduleDotMethod] = module[@"moduleID"];
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RCTLocalMethodIDs[moduleDotMethod] = methods[methodName][@"methodID"];
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}
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});
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return localModules;
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}
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@implementation RCTBridge
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{
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RCTSparseArray *_modulesByID;
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NSDictionary *_modulesByName;
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id<RCTJavaScriptExecutor> _javaScriptExecutor;
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}
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static id<RCTJavaScriptExecutor> _latestJSExecutor;
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- (instancetype)initWithExecutor:(id<RCTJavaScriptExecutor>)executor
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moduleProvider:(RCTBridgeModuleProviderBlock)block
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{
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if ((self = [super init])) {
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_javaScriptExecutor = executor;
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_latestJSExecutor = _javaScriptExecutor;
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_eventDispatcher = [[RCTEventDispatcher alloc] initWithBridge:self];
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_shadowQueue = dispatch_queue_create("com.facebook.ReactKit.ShadowQueue", DISPATCH_QUEUE_SERIAL);
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// Register passed-in module instances
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NSMutableDictionary *preregisteredModules = [[NSMutableDictionary alloc] init];
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for (id<RCTBridgeModule> module in block ? block() : nil) {
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preregisteredModules[RCTModuleNameForClass([module class])] = module;
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}
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// Instantiate modules
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_modulesByID = [[RCTSparseArray alloc] init];
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NSMutableDictionary *modulesByName = [preregisteredModules mutableCopy];
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[RCTBridgeModuleClassesByModuleID() enumerateObjectsUsingBlock:^(Class moduleClass, NSUInteger moduleID, BOOL *stop) {
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NSString *moduleName = RCTModuleNamesByID[moduleID];
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// Check if module instance has already been registered for this name
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if ((_modulesByID[moduleID] = modulesByName[moduleName])) {
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// Preregistered instances takes precedence, no questions asked
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if (!preregisteredModules[moduleName]) {
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// It's OK to have a name collision as long as the second instance is nil
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RCTAssert([[moduleClass alloc] init] == nil,
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@"Attempted to register RCTBridgeModule class %@ for the name '%@', \
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|
but name was already registered by class %@", moduleClass,
|
|
moduleName, [modulesByName[moduleName] class]);
|
|
}
|
|
} else {
|
|
// Module name hasn't been used before, so go ahead and instantiate
|
|
id<RCTBridgeModule> module = [[moduleClass alloc] init];
|
|
if (module) {
|
|
_modulesByID[moduleID] = modulesByName[moduleName] = module;
|
|
}
|
|
}
|
|
}];
|
|
|
|
// Store modules
|
|
_modulesByName = [modulesByName copy];
|
|
|
|
// Set bridge
|
|
for (id<RCTBridgeModule> module in _modulesByName.allValues) {
|
|
if ([module respondsToSelector:@selector(setBridge:)]) {
|
|
module.bridge = self;
|
|
}
|
|
}
|
|
|
|
// Inject module data into JS context
|
|
NSString *configJSON = RCTJSONStringify(@{
|
|
@"remoteModuleConfig": RCTRemoteModulesConfig(_modulesByName),
|
|
@"localModulesConfig": RCTLocalModulesConfig()
|
|
}, NULL);
|
|
dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
|
|
[_javaScriptExecutor injectJSONText:configJSON asGlobalObjectNamed:@"__fbBatchedBridgeConfig" callback:^(id err) {
|
|
dispatch_semaphore_signal(semaphore);
|
|
}];
|
|
|
|
if (dispatch_semaphore_wait(semaphore, dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC)) != 0) {
|
|
RCTLogMustFix(@"JavaScriptExecutor took too long to inject JSON object");
|
|
}
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
- (NSDictionary *)modules
|
|
{
|
|
RCTAssert(_modulesByName != nil, @"Bridge modules have not yet been initialized. \
|
|
You may be trying to access a module too early in the startup procedure.");
|
|
|
|
return _modulesByName;
|
|
}
|
|
|
|
- (void)dealloc
|
|
{
|
|
RCTAssert(!self.valid, @"must call -invalidate before -dealloc");
|
|
}
|
|
|
|
#pragma mark - RCTInvalidating
|
|
|
|
- (BOOL)isValid
|
|
{
|
|
return _javaScriptExecutor != nil;
|
|
}
|
|
|
|
- (void)invalidate
|
|
{
|
|
// Release executor
|
|
if (_latestJSExecutor == _javaScriptExecutor) {
|
|
_latestJSExecutor = nil;
|
|
}
|
|
[_javaScriptExecutor invalidate];
|
|
_javaScriptExecutor = nil;
|
|
|
|
// Wait for queued methods to finish
|
|
dispatch_sync(self.shadowQueue, ^{
|
|
// Make sure all dispatchers have been executed before continuing
|
|
// TODO: is this still needed?
|
|
});
|
|
|
|
// Invalidate modules
|
|
for (id target in _modulesByID.allObjects) {
|
|
if ([target respondsToSelector:@selector(invalidate)]) {
|
|
[(id<RCTInvalidating>)target invalidate];
|
|
}
|
|
}
|
|
|
|
// Release modules (breaks retain cycle if module has strong bridge reference)
|
|
_modulesByID = nil;
|
|
_modulesByName = nil;
|
|
}
|
|
|
|
/**
|
|
* - TODO (#5906496): When we build a `MessageQueue.m`, handling all the requests could
|
|
* cause both a queue of "responses". We would flush them here. However, we
|
|
* currently just expect each objc block to handle its own response sending
|
|
* using a `RCTResponseSenderBlock`.
|
|
*/
|
|
|
|
#pragma mark - RCTBridge methods
|
|
|
|
/**
|
|
* Like JS::call, for objective-c.
|
|
*/
|
|
- (void)enqueueJSCall:(NSString *)moduleDotMethod args:(NSArray *)args
|
|
{
|
|
NSNumber *moduleID = RCTLocalModuleIDs[moduleDotMethod];
|
|
RCTAssert(moduleID != nil, @"Module '%@' not registered.",
|
|
[[moduleDotMethod componentsSeparatedByString:@"."] firstObject]);
|
|
|
|
NSNumber *methodID = RCTLocalMethodIDs[moduleDotMethod];
|
|
RCTAssert(methodID != nil, @"Method '%@' not registered.", moduleDotMethod);
|
|
|
|
[self _invokeAndProcessModule:@"BatchedBridge"
|
|
method:@"callFunctionReturnFlushedQueue"
|
|
arguments:@[moduleID, methodID, args ?: @[]]];
|
|
}
|
|
|
|
- (void)enqueueApplicationScript:(NSString *)script url:(NSURL *)url onComplete:(RCTJavaScriptCompleteBlock)onComplete
|
|
{
|
|
RCTAssert(onComplete != nil, @"onComplete block passed in should be non-nil");
|
|
[_javaScriptExecutor executeApplicationScript:script sourceURL:url onComplete:^(NSError *scriptLoadError) {
|
|
if (scriptLoadError) {
|
|
onComplete(scriptLoadError);
|
|
return;
|
|
}
|
|
|
|
[_javaScriptExecutor executeJSCall:@"BatchedBridge"
|
|
method:@"flushedQueue"
|
|
arguments:@[]
|
|
callback:^(id json, NSError *error) {
|
|
[self _handleBuffer:json];
|
|
onComplete(error);
|
|
}];
|
|
}];
|
|
}
|
|
|
|
#pragma mark - Payload Generation
|
|
|
|
- (void)_invokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args
|
|
{
|
|
NSTimeInterval startJS = RCTTGetAbsoluteTime();
|
|
|
|
RCTJavaScriptCallback processResponse = ^(id json, NSError *error) {
|
|
NSTimeInterval startNative = RCTTGetAbsoluteTime();
|
|
[self _handleBuffer:json];
|
|
|
|
NSTimeInterval end = RCTTGetAbsoluteTime();
|
|
NSTimeInterval timeJS = startNative - startJS;
|
|
NSTimeInterval timeNative = end - startNative;
|
|
|
|
// TODO: surface this performance information somewhere
|
|
[[NSNotificationCenter defaultCenter] postNotificationName:@"PERF" object:nil userInfo:@{
|
|
@"JS": @(timeJS * 1000000),
|
|
@"Native": @(timeNative * 1000000)
|
|
}];
|
|
};
|
|
|
|
[_javaScriptExecutor executeJSCall:module
|
|
method:method
|
|
arguments:args
|
|
callback:processResponse];
|
|
}
|
|
|
|
#pragma mark - Payload Processing
|
|
|
|
- (void)_handleBuffer:(id)buffer
|
|
{
|
|
if (buffer == nil || buffer == (id)kCFNull) {
|
|
return;
|
|
}
|
|
|
|
if (![buffer isKindOfClass:[NSArray class]]) {
|
|
RCTLogError(@"Buffer must be an instance of NSArray, got %@", NSStringFromClass([buffer class]));
|
|
return;
|
|
}
|
|
|
|
NSArray *requestsArray = (NSArray *)buffer;
|
|
NSUInteger bufferRowCount = [requestsArray count];
|
|
NSUInteger expectedFieldsCount = RCTBridgeFieldResponseReturnValues + 1;
|
|
if (bufferRowCount != expectedFieldsCount) {
|
|
RCTLogError(@"Must pass all fields to buffer - expected %zd, saw %zd", expectedFieldsCount, bufferRowCount);
|
|
return;
|
|
}
|
|
|
|
for (NSUInteger fieldIndex = RCTBridgeFieldRequestModuleIDs; fieldIndex <= RCTBridgeFieldParamss; fieldIndex++) {
|
|
id field = [requestsArray objectAtIndex:fieldIndex];
|
|
if (![field isKindOfClass:[NSArray class]]) {
|
|
RCTLogError(@"Field at index %zd in buffer must be an instance of NSArray, got %@", fieldIndex, NSStringFromClass([field class]));
|
|
return;
|
|
}
|
|
}
|
|
|
|
NSArray *moduleIDs = requestsArray[RCTBridgeFieldRequestModuleIDs];
|
|
NSArray *methodIDs = requestsArray[RCTBridgeFieldMethodIDs];
|
|
NSArray *paramsArrays = requestsArray[RCTBridgeFieldParamss];
|
|
|
|
NSUInteger numRequests = [moduleIDs count];
|
|
BOOL allSame = numRequests == [methodIDs count] && numRequests == [paramsArrays count];
|
|
if (!allSame) {
|
|
RCTLogError(@"Invalid data message - all must be length: %zd", numRequests);
|
|
return;
|
|
}
|
|
|
|
for (NSUInteger i = 0; i < numRequests; i++) {
|
|
@autoreleasepool {
|
|
[self _handleRequestNumber:i
|
|
moduleID:[moduleIDs[i] integerValue]
|
|
methodID:[methodIDs[i] integerValue]
|
|
params:paramsArrays[i]];
|
|
}
|
|
}
|
|
|
|
// TODO: only used by RCTUIManager - can we eliminate this special case?
|
|
dispatch_async(self.shadowQueue, ^{
|
|
for (id module in _modulesByID.allObjects) {
|
|
if ([module respondsToSelector:@selector(batchDidComplete)]) {
|
|
[module batchDidComplete];
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
- (BOOL)_handleRequestNumber:(NSUInteger)i
|
|
moduleID:(NSUInteger)moduleID
|
|
methodID:(NSUInteger)methodID
|
|
params:(NSArray *)params
|
|
{
|
|
if (![params isKindOfClass:[NSArray class]]) {
|
|
RCTLogError(@"Invalid module/method/params tuple for request #%zd", i);
|
|
return NO;
|
|
}
|
|
|
|
// Look up method
|
|
NSArray *methods = RCTExportedMethodsByModuleID()[moduleID];
|
|
if (methodID >= methods.count) {
|
|
RCTLogError(@"Unknown methodID: %zd for module: %zd (%@)", methodID, moduleID, RCTModuleNamesByID[moduleID]);
|
|
return NO;
|
|
}
|
|
RCTModuleMethod *method = methods[methodID];
|
|
|
|
__weak RCTBridge *weakSelf = self;
|
|
dispatch_async(self.shadowQueue, ^{
|
|
__strong RCTBridge *strongSelf = weakSelf;
|
|
|
|
if (!strongSelf.isValid) {
|
|
// strongSelf has been invalidated since the dispatch_async call and this
|
|
// invocation should not continue.
|
|
return;
|
|
}
|
|
|
|
// Look up module
|
|
id module = strongSelf->_modulesByID[moduleID];
|
|
if (!module) {
|
|
RCTLogError(@"No module found for name '%@'", RCTModuleNamesByID[moduleID]);
|
|
return;
|
|
}
|
|
|
|
@try {
|
|
[method invokeWithBridge:strongSelf module:module arguments:params];
|
|
}
|
|
@catch (NSException *exception) {
|
|
RCTLogError(@"Exception thrown while invoking %@ on target %@ with params %@: %@", method.JSMethodName, module, params, exception);
|
|
}
|
|
});
|
|
|
|
return YES;
|
|
}
|
|
|
|
+ (BOOL)hasValidJSExecutor
|
|
{
|
|
return (_latestJSExecutor != nil && [_latestJSExecutor isValid]);
|
|
}
|
|
|
|
+ (void)log:(NSArray *)objects level:(NSString *)level
|
|
{
|
|
if (!_latestJSExecutor || ![_latestJSExecutor isValid]) {
|
|
RCTLogError(@"ERROR: No valid JS executor to log %@.", objects);
|
|
return;
|
|
}
|
|
NSMutableArray *args = [NSMutableArray arrayWithObject:level];
|
|
|
|
// TODO (#5906496): Find out and document why we skip the first object
|
|
for (id ob in [objects subarrayWithRange:(NSRange){1, [objects count] - 1}]) {
|
|
if ([NSJSONSerialization isValidJSONObject:@[ob]]) {
|
|
[args addObject:ob];
|
|
} else {
|
|
[args addObject:[ob description]];
|
|
}
|
|
}
|
|
|
|
// Note: the js executor could get invalidated while we're trying to call this...need to watch out for that.
|
|
[_latestJSExecutor executeJSCall:@"RCTLog"
|
|
method:@"logIfNoNativeHook"
|
|
arguments:args
|
|
callback:^(id json, NSError *error) {}];
|
|
}
|
|
|
|
@end
|