Class: NSAssertionHandler
Overview
NSAssertionHandler objects are automatically created to handle false assertions. Assertion macros, such as NSAssert and NSCAssert, are used to evaluate a condition, and, if the condition evaluates to false, the macros pass a string to an NSAssertionHandler object describing the failure. Each thread has its own NSAssertionHandler object. When invoked, an assertion handler prints an error message that includes the method and class (or function) containing the assertion and raises an NSInternalInconsistencyException.
Class Method Summary (collapse)
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+ currentHandler
Returns the NSAssertionHandler object associated with the current thread.
Instance Method Summary (collapse)
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- handleFailureInFunction:file:lineNumber:description:
Logs (using NSLog) an error message that includes the name of the function, the name of the file, and the line number.
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- handleFailureInMethod:object:file:lineNumber:description:
Logs (using NSLog) an error message that includes the name of the method that failed, the class name of the object, the name of the source file, and the line number.
Methods inherited from NSObject
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Constructor Details
This class inherits a constructor from NSObject
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class NSObject
Class Method Details
+ (NSAssertionHandler) currentHandler
Returns the NSAssertionHandler object associated with the current thread. If no assertion handler is associated with the current thread, this method creates one and assigns it to the thread.
Instance Method Details
- (Object) handleFailureInFunction(functionName, file:fileName, lineNumber:line, description:format, ...)
Logs (using NSLog) an error message that includes the name of the function, the name of the file, and the line number. Raises NSInternalInconsistencyException.
- (Object) handleFailureInMethod(selector, object:object, file:fileName, lineNumber:line, description:format, ...)
Logs (using NSLog) an error message that includes the name of the method that failed, the class name of the object, the name of the source file, and the line number. Raises NSInternalInconsistencyException.