react-native/React/Base/RCTAssert.m

165 lines
5.1 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTAssert.h"
#import "RCTLog.h"
NSString *const RCTErrorDomain = @"RCTErrorDomain";
NSString *const RCTJSStackTraceKey = @"RCTJSStackTraceKey";
NSString *const RCTFatalExceptionName = @"RCTFatalException";
static NSString *const RCTAssertFunctionStack = @"RCTAssertFunctionStack";
RCTAssertFunction RCTCurrentAssertFunction = nil;
RCTFatalHandler RCTCurrentFatalHandler = 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 = 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 *message = RCTFormatError([error localizedDescription], error.userInfo[RCTJSStackTraceKey], 75);
[NSException raise:RCTFatalExceptionName format:@"%@", message];
#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:@"..."];
}
NSMutableString *prettyStack = [NSMutableString string];
if (stackTrace) {
[prettyStack appendString:@", stack:\n"];
for (NSDictionary<NSString *, id> *frame in stackTrace) {
[prettyStack appendFormat:@"%@@%@:%@\n", frame[@"methodName"], frame[@"lineNumber"], frame[@"column"]];
}
}
return [NSString stringWithFormat:@"Message: %@%@", message, prettyStack];
}