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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 "RCTAssert.h"
- #import "RCTLog.h"
- NSString *const RCTErrorDomain = @"RCTErrorDomain";
- NSString *const RCTJSStackTraceKey = @"RCTJSStackTraceKey";
- NSString *const RCTJSRawStackTraceKey = @"RCTJSRawStackTraceKey";
- NSString *const RCTFatalExceptionName = @"RCTFatalException";
- NSString *const RCTUntruncatedMessageKey = @"RCTUntruncatedMessageKey";
- static NSString *const RCTAssertFunctionStack = @"RCTAssertFunctionStack";
- RCTAssertFunction RCTCurrentAssertFunction = nil;
- RCTFatalHandler RCTCurrentFatalHandler = nil;
- RCTFatalExceptionHandler RCTCurrentFatalExceptionHandler = nil;
- NSException *_RCTNotImplementedException(SEL, Class);
- NSException *_RCTNotImplementedException(SEL cmd, Class cls)
- {
- NSString *msg = [NSString stringWithFormat:
- @"%s is not implemented "
- "for the class %@",
- sel_getName(cmd),
- cls];
- return [NSException exceptionWithName:@"RCTNotDesignatedInitializerException" reason:msg userInfo:nil];
- }
- void RCTSetAssertFunction(RCTAssertFunction assertFunction)
- {
- RCTCurrentAssertFunction = assertFunction;
- }
- RCTAssertFunction RCTGetAssertFunction(void)
- {
- return RCTCurrentAssertFunction;
- }
- void RCTAddAssertFunction(RCTAssertFunction assertFunction)
- {
- RCTAssertFunction existing = RCTCurrentAssertFunction;
- if (existing) {
- RCTCurrentAssertFunction =
- ^(NSString *condition, NSString *fileName, NSNumber *lineNumber, NSString *function, NSString *message) {
- existing(condition, fileName, lineNumber, function, message);
- assertFunction(condition, fileName, lineNumber, function, message);
- };
- } else {
- RCTCurrentAssertFunction = assertFunction;
- }
- }
- /**
- * returns the topmost stacked assert function for the current thread, which
- * may not be the same as the current value of RCTCurrentAssertFunction.
- */
- static RCTAssertFunction RCTGetLocalAssertFunction()
- {
- NSMutableDictionary *threadDictionary = [NSThread currentThread].threadDictionary;
- NSArray<RCTAssertFunction> *functionStack = threadDictionary[RCTAssertFunctionStack];
- RCTAssertFunction assertFunction = functionStack.lastObject;
- if (assertFunction) {
- return assertFunction;
- }
- return RCTCurrentAssertFunction;
- }
- void RCTPerformBlockWithAssertFunction(void (^block)(void), RCTAssertFunction assertFunction)
- {
- NSMutableDictionary *threadDictionary = [NSThread currentThread].threadDictionary;
- NSMutableArray<RCTAssertFunction> *functionStack = threadDictionary[RCTAssertFunctionStack];
- if (!functionStack) {
- functionStack = [NSMutableArray new];
- threadDictionary[RCTAssertFunctionStack] = functionStack;
- }
- [functionStack addObject:assertFunction];
- block();
- [functionStack removeLastObject];
- }
- NSString *RCTCurrentThreadName(void)
- {
- NSThread *thread = [NSThread currentThread];
- NSString *threadName = RCTIsMainQueue() || thread.isMainThread ? @"main" : thread.name;
- if (threadName.length == 0) {
- const char *label = dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL);
- if (label && strlen(label) > 0) {
- threadName = @(label);
- } else {
- threadName = [NSString stringWithFormat:@"%p", thread];
- }
- }
- return threadName;
- }
- void _RCTAssertFormat(
- const char *condition,
- const char *fileName,
- int lineNumber,
- const char *function,
- NSString *format,
- ...)
- {
- RCTAssertFunction assertFunction = RCTGetLocalAssertFunction();
- if (assertFunction) {
- va_list args;
- va_start(args, format);
- NSString *message = [[NSString alloc] initWithFormat:format arguments:args];
- va_end(args);
- assertFunction(@(condition), @(fileName), @(lineNumber), @(function), message);
- }
- }
- void RCTFatal(NSError *error)
- {
- _RCTLogNativeInternal(RCTLogLevelFatal, NULL, 0, @"%@", error.localizedDescription);
- RCTFatalHandler fatalHandler = RCTGetFatalHandler();
- if (fatalHandler) {
- fatalHandler(error);
- } else {
- #if DEBUG
- @try {
- #endif
- NSString *name = [NSString stringWithFormat:@"%@: %@", RCTFatalExceptionName, error.localizedDescription];
- // Truncate the localized description to 175 characters to avoid wild screen overflows
- NSString *message = RCTFormatError(error.localizedDescription, error.userInfo[RCTJSStackTraceKey], 175);
- // Attach an untruncated copy of the description to the userInfo, in case it is needed
- NSMutableDictionary *userInfo = [error.userInfo mutableCopy];
- [userInfo setObject:RCTFormatError(error.localizedDescription, error.userInfo[RCTJSStackTraceKey], -1)
- forKey:RCTUntruncatedMessageKey];
- // Expected resulting exception information:
- // name: RCTFatalException: <underlying error description>
- // reason: <underlying error description plus JS stack trace, truncated to 175 characters>
- // userInfo: <underlying error userinfo, plus untruncated description plus JS stack trace>
- @throw [[NSException alloc] initWithName:name reason:message userInfo:userInfo];
- #if DEBUG
- } @catch (NSException *e) {
- }
- #endif
- }
- }
- void RCTSetFatalHandler(RCTFatalHandler fatalHandler)
- {
- RCTCurrentFatalHandler = fatalHandler;
- }
- RCTFatalHandler RCTGetFatalHandler(void)
- {
- return RCTCurrentFatalHandler;
- }
- NSString *
- RCTFormatError(NSString *message, NSArray<NSDictionary<NSString *, id> *> *stackTrace, NSUInteger maxMessageLength)
- {
- if (maxMessageLength > 0 && message.length > maxMessageLength) {
- message = [[message substringToIndex:maxMessageLength] stringByAppendingString:@"..."];
- }
- NSString *prettyStack = RCTFormatStackTrace(stackTrace);
- return [NSString
- stringWithFormat:@"%@%@%@", message, prettyStack ? @", stack:\n" : @"", prettyStack ? prettyStack : @""];
- }
- NSString *RCTFormatStackTrace(NSArray<NSDictionary<NSString *, id> *> *stackTrace)
- {
- if (stackTrace) {
- NSMutableString *prettyStack = [NSMutableString string];
- NSRegularExpression *regex =
- [NSRegularExpression regularExpressionWithPattern:@"\\b((?:seg-\\d+(?:_\\d+)?|\\d+)\\.js)"
- options:NSRegularExpressionCaseInsensitive
- error:NULL];
- for (NSDictionary<NSString *, id> *frame in stackTrace) {
- NSString *fileName = [frame[@"file"] lastPathComponent];
- NSTextCheckingResult *match =
- fileName != nil ? [regex firstMatchInString:fileName options:0 range:NSMakeRange(0, fileName.length)] : nil;
- if (match) {
- fileName = [NSString stringWithFormat:@"%@:", [fileName substringWithRange:match.range]];
- } else {
- fileName = @"";
- }
- [prettyStack
- appendFormat:@"%@@%@%@:%@\n", frame[@"methodName"], fileName, frame[@"lineNumber"], frame[@"column"]];
- }
- return prettyStack;
- }
- return nil;
- }
- void RCTFatalException(NSException *exception)
- {
- _RCTLogNativeInternal(RCTLogLevelFatal, NULL, 0, @"%@: %@", exception.name, exception.reason);
- RCTFatalExceptionHandler fatalExceptionHandler = RCTGetFatalExceptionHandler();
- if (fatalExceptionHandler) {
- fatalExceptionHandler(exception);
- } else {
- #if DEBUG
- @try {
- #endif
- @throw exception;
- #if DEBUG
- } @catch (NSException *e) {
- }
- #endif
- }
- }
- void RCTSetFatalExceptionHandler(RCTFatalExceptionHandler fatalExceptionHandler)
- {
- RCTCurrentFatalExceptionHandler = fatalExceptionHandler;
- }
- RCTFatalExceptionHandler RCTGetFatalExceptionHandler(void)
- {
- return RCTCurrentFatalExceptionHandler;
- }
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