ExceptionError_test Class Reference

Description

Some aspects of C++ exception handling.

Not to be confused with the basic C-style error value mechanism used by the low-level parts of the vault. Both approaches are largely orthogonal, but the C++ exception handling uses the C-style error constants.

Definition at line 58 of file exception-error-test.cpp.

Classes
class	SpecificError
	a very specific Exception class local to this scope and with additional behaviour. More...

Private Types
typedef ExceptionError_test	test

Private Member Functions
void	catcher (void(ExceptionError_test::*funky)(string), string context="")
	helper: provides a bunch of catch-clauses and runs the given member functions within
void	checkErrorFlagPropagation ()
void	checkRootCauseChaining ()
void	detectErrorflag (string)
void	doubleNestedTh (string msg)
void	nestedThrower (string msg)
virtual void	run (Arg)
void	throwDerived (string)
void	throwExceptn (string)
void	throwExternal (string _)
void	throwFatal (string _)
void	throwInvalid (string _)
void	throwRuntime (string _)
void	throwSpecial (string)

Member Function Documentation

throwSpecial()

void throwSpecial ( string  )

inlineprivate

Test:

simply throw some exception and pass context info

Definition at line 83 of file exception-error-test.cpp.

nestedThrower()

void nestedThrower ( string  msg )

inlineprivate

Test:

catching, repackaging and rethrowing of errors.

This feature is important for passing exceptions transparently over several layers. The nested operation will throw an error::External, which we are able to catch because it is derived from std::exception. We don't need to know the exact type, but we can classify the error situation as a "state error" and throw an error::State, passing on the root cause. Some levels up, this error get caught and the root cause can be extracted successfully.

Definition at line 101 of file exception-error-test.cpp.

Referenced by ExceptionError_test::doubleNestedTh().

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doubleNestedTh()

void doubleNestedTh ( string  msg )

inlineprivate

Test:

repeated repackaging and rethrowing

Definition at line 113 of file exception-error-test.cpp.

References ExceptionError_test::nestedThrower(), and Error::what().

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checkErrorFlagPropagation()

void checkErrorFlagPropagation ( )

inlineprivate

Test:

verify throwing of Exceptions based on a non-cleared C error flag

Definition at line 131 of file exception-error-test.cpp.

References ExceptionError_test::catcher(), lumiera_error_peek(), and lumiera_error_set().

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checkRootCauseChaining()

void checkRootCauseChaining ( )

inlineprivate

Test:

the chaining of lumiera::Exception objects and the retrieval of the original root cause.

Definition at line 144 of file exception-error-test.cpp.

References Error::rootCause().

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Inheritance diagram for ExceptionError_test:

Collaboration diagram for ExceptionError_test:

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The documentation for this class was generated from the following file:

• exception-error-test.cpp