Files
react-native/Libraries/Network/RCTDataRequestHandler.mm
T
Ramanpreet Nara 3f38186b78 Codemod: Give legacy cxx and ObjC-only NativeModules a getTurboModule: method
Summary:
We're making the getTurboModule: method required for all classes that conform to RCTTurboModule.

Many of our ObjC-only and Cxx NativeModules don't implement this method. This diff implements a getTurboModule: method on all those modules that returns nullptr.

**Question:** Why is it fine to make ObjC-only NativeModules return nullptr from their getTurboModule: method?
- Because they're only accessed from ObjC, and should appear as null on the JavaScript side. Longer term, these NativeModules will also go away.

**Question:** Why is it fine to make Cxx NativeModules return nullptr from getTurboModule: method?
- Because after D27316872, the TurboModuleManager checks if the module is a CxxModule first. If it is, we do an early return, and never call the module's getTurboModule: method.

Changelog: [Internal]

Reviewed By: JoshuaGross

Differential Revision: D27316871

fbshipit-source-id: bc693f2927ab3b0de24e6e9e7699390ec0f7d729
2021-04-08 21:15:52 -07:00

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/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <React/RCTDataRequestHandler.h>
#import <ReactCommon/RCTTurboModule.h>
#import "RCTNetworkPlugins.h"
@interface RCTDataRequestHandler() <RCTTurboModule>
@end
@implementation RCTDataRequestHandler
{
NSOperationQueue *_queue;
}
RCT_EXPORT_MODULE()
- (void)invalidate
{
[_queue cancelAllOperations];
_queue = nil;
}
- (BOOL)canHandleRequest:(NSURLRequest *)request
{
return [request.URL.scheme caseInsensitiveCompare:@"data"] == NSOrderedSame;
}
- (NSOperation *)sendRequest:(NSURLRequest *)request
withDelegate:(id<RCTURLRequestDelegate>)delegate
{
// Lazy setup
if (!_queue) {
_queue = [NSOperationQueue new];
_queue.maxConcurrentOperationCount = 2;
}
__weak __block NSBlockOperation *weakOp;
__block NSBlockOperation *op = [NSBlockOperation blockOperationWithBlock:^{
// Get mime type
NSRange firstSemicolon = [request.URL.resourceSpecifier rangeOfString:@";"];
NSString *mimeType = firstSemicolon.length ? [request.URL.resourceSpecifier substringToIndex:firstSemicolon.location] : nil;
// Send response
NSURLResponse *response = [[NSURLResponse alloc] initWithURL:request.URL
MIMEType:mimeType
expectedContentLength:-1
textEncodingName:nil];
[delegate URLRequest:weakOp didReceiveResponse:response];
// Load data
NSError *error;
NSData *data = [NSData dataWithContentsOfURL:request.URL
options:NSDataReadingMappedIfSafe
error:&error];
if (data) {
[delegate URLRequest:weakOp didReceiveData:data];
}
[delegate URLRequest:weakOp didCompleteWithError:error];
}];
weakOp = op;
[_queue addOperation:op];
return op;
}
- (void)cancelRequest:(NSOperation *)op
{
[op cancel];
}
- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:
(const facebook::react::ObjCTurboModule::InitParams &)params
{
return nullptr;
}
@end
Class RCTDataRequestHandlerCls(void) {
return RCTDataRequestHandler.class;
}