Created
March 8, 2014 15:52
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Objective-C convenience methods for abstracting timing dependency
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- (void)example | |
{ | |
NSTextView * console = [self xcodeConsoleIn: IDEWindow]; | |
NSInteger baseLength = [[console string] length] + [command length]; | |
[_log appendFormat: @"\n Writing into console: %@", command]; | |
[console insertText: command]; | |
[console insertNewline:nil]; | |
[self waitFor:@"the console to write" waitBlock:^BOOL{ | |
// Wait until the console text has grown to include the command | |
NSInteger newLength = [[console string] length]; | |
if (newLength < baseLength) | |
return NO; | |
// Wait until the console has printed (lldb) indicating it's | |
// ready for the next input. | |
if ([[[console string] substringFromIndex: baseLength] rangeOfString: @"(lldb)"].location == NSNotFound) | |
return NO; | |
// proceed to ready block | |
return YES; | |
} readyBlock:^{ | |
NSString * newText = [self contentsOf:console after: baseLength]; | |
[_log appendFormat: @"\n Read from console: %@", newText]; | |
callback(newText); | |
}]; | |
} | |
- (void)waitFor:(NSString*)description waitBlock:(BOOL(^)())conditionalBlock readyBlock:(void(^)())finalBlock | |
{ | |
[self waitFor:description waitBlock:conditionalBlock readyBlock:finalBlock tries: 40]; | |
} | |
- (void)waitFor:(NSString*)description waitBlock:(BOOL(^)())conditionalBlock readyBlock:(void(^)())finalBlock tries:(int)remaining | |
{ | |
if (remaining == 0) | |
return [self showAlert: [NSString stringWithFormat: @"Setup did not complete successfully. The Spark Inspector timed out waiting for %@.", description]]; | |
[self after:INTERFACE_POLL_INTERVAL execute:^{ | |
if (conditionalBlock()) { | |
if (finalBlock) | |
finalBlock(); | |
return; | |
} | |
[self waitFor:description waitBlock:conditionalBlock readyBlock:finalBlock tries: remaining - 1]; | |
}]; | |
} | |
- (void)after:(NSTimeInterval)interval execute:(void(^)())block | |
{ | |
double delayInSeconds = interval; | |
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC)); | |
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){ | |
block(); | |
}); | |
} |
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