r277:7abfb55f1ecc
Mon, 22 Sep 2008 10:56:01
[Not Reviewed]
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/// \brief Extended assertion handling |
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#include <lemon/error.h> |
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namespace lemon {
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inline void assert_fail_log(const char *file, int line, const char *function, |
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const char *message, const char *assertion) |
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inline void assert_fail_abort(const char *file, int line, |
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const char *function, const char* message, |
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const char *assertion) |
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{
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std::cerr << file << ":" << line << ": "; |
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if (function) |
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std::cerr << function << ": "; |
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std::cerr << message; |
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if (assertion) |
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std::cerr << " (assertion '" << assertion << "' failed)"; |
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std::cerr << std::endl; |
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} |
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inline void assert_fail_abort(const char *file, int line, |
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const char *function, const char* message, |
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const char *assertion) |
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{
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assert_fail_log(file, line, function, message, assertion); |
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std::abort(); |
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} |
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namespace _assert_bits {
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@@ -60,35 +54,29 @@ |
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} |
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} |
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#endif // LEMON_ASSERT_H |
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#undef LEMON_ASSERT |
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#undef LEMON_FIXME |
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#undef LEMON_DEBUG |
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#if (defined(LEMON_ASSERT_LOG) ? 1 : 0) + \ |
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(defined(LEMON_ASSERT_ABORT) ? 1 : 0) + \ |
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#if (defined(LEMON_ASSERT_ABORT) ? 1 : 0) + \ |
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(defined(LEMON_ASSERT_CUSTOM) ? 1 : 0) > 1 |
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#error "LEMON assertion system is not set properly" |
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#endif |
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#if ((defined(LEMON_ASSERT_LOG) ? 1 : 0) + \ |
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(defined(LEMON_ASSERT_ABORT) ? 1 : 0) + \ |
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#if ((defined(LEMON_ASSERT_ABORT) ? 1 : 0) + \ |
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(defined(LEMON_ASSERT_CUSTOM) ? 1 : 0) == 1 || \ |
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defined(LEMON_ENABLE_ASSERTS)) && \ |
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(defined(LEMON_DISABLE_ASSERTS) || \ |
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defined(NDEBUG)) |
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#error "LEMON assertion system is not set properly" |
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#endif |
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#if defined LEMON_ASSERT_LOG |
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# undef LEMON_ASSERT_HANDLER |
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# define LEMON_ASSERT_HANDLER ::lemon::assert_fail_log |
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#elif defined LEMON_ASSERT_ABORT |
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#if defined LEMON_ASSERT_ABORT |
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# undef LEMON_ASSERT_HANDLER |
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# define LEMON_ASSERT_HANDLER ::lemon::assert_fail_abort |
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#elif defined LEMON_ASSERT_CUSTOM |
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# undef LEMON_ASSERT_HANDLER |
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# ifndef LEMON_CUSTOM_ASSERT_HANDLER |
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# error "LEMON_CUSTOM_ASSERT_HANDLER is not set" |
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@@ -117,18 +105,18 @@ |
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#ifdef DOXYGEN |
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/// \ingroup exceptions |
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/// |
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/// \brief Macro for assertion with customizable message |
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/// |
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/// Macro for assertion with customizable message. \param exp An |
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/// expression that must be convertible to \c bool. If it is \c |
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/// false, then an assertion is raised. The concrete behaviour depends |
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/// on the settings of the assertion system. \param msg A <tt>const |
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/// char*</tt> parameter, which can be used to provide information |
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/// about the circumstances of the failed assertion. |
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/// Macro for assertion with customizable message. |
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/// \param exp An expression that must be convertible to \c bool. If it is \c |
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/// false, then an assertion is raised. The concrete behaviour depends on the |
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/// settings of the assertion system. |
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/// \param msg A <tt>const char*</tt> parameter, which can be used to provide |
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/// information about the circumstances of the failed assertion. |
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/// |
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/// The assertions are enabled in the default behaviour. |
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/// You can disable them with the following code: |
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/// \code |
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/// #define LEMON_DISABLE_ASSERTS |
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/// \endcode |
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@@ -136,23 +124,18 @@ |
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/// \code |
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/// g++ -DLEMON_DISABLE_ASSERTS |
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/// make CXXFLAGS='-DLEMON_DISABLE_ASSERTS' |
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/// \endcode |
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/// The checking is also disabled when the standard macro \c NDEBUG is defined. |
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/// |
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/// The LEMON assertion system has a wide range of customization |
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/// properties. As a default behaviour the failed assertion prints a |
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/// short log message to |
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/// As a default behaviour the failed assertion prints a short log message to |
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/// the standard error and aborts the execution. |
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/// |
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/// The following modes can be used in the assertion system: |
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/// |
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/// - \c LEMON_ASSERT_LOG The failed assertion prints a short log |
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/// message to the standard error and continues the execution. |
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/// - \c LEMON_ASSERT_ABORT This mode is similar to the \c |
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/// LEMON_ASSERT_LOG, but it aborts the program. It is the default |
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/// |
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/// However, the following modes can be used in the assertion system: |
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/// - \c LEMON_ASSERT_ABORT The failed assertion prints a short log message to |
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/// the standard error and aborts the program. It is the default behaviour. |
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/// - \c LEMON_ASSERT_CUSTOM The user can define own assertion handler |
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/// function. |
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/// \code |
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/// void custom_assert_handler(const char* file, int line, |
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/// const char* function, const char* message, |
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/// const char* assertion); |
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@@ -174,28 +157,12 @@ |
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LEMON_ASSERT_HANDLER(__FILE__, __LINE__, \ |
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LEMON_FUNCTION_NAME, \ |
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::lemon::_assert_bits::cstringify(msg), #exp), 0))) |
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/// \ingroup exceptions |
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/// |
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/// \brief Macro for mark not yet implemented features. |
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/// |
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/// Macro for mark not yet implemented features and outstanding bugs. |
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/// It is close to be the shortcut of the following code: |
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/// \code |
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/// LEMON_ASSERT(false, msg); |
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/// \endcode |
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/// |
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/// \see LEMON_ASSERT |
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# define LEMON_FIXME(msg) \ |
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(LEMON_ASSERT_HANDLER(__FILE__, __LINE__, LEMON_FUNCTION_NAME, \ |
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::lemon::_assert_bits::cstringify(msg), \ |
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static_cast<const char*>(0))) |
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/// \ingroup exceptions |
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/// |
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/// \brief Macro for internal assertions |
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/// |
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/// Macro for internal assertions, it is used in the library to check |
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/// the consistency of results of algorithms, several pre- and |
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/// postconditions and invariants. The checking is disabled by |
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/// default, but it can be turned on with the macro \c |
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@@ -221,26 +188,20 @@ |
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::lemon::_assert_bits::cstringify(msg), #exp), 0))) |
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#else |
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# ifndef LEMON_ASSERT_HANDLER |
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# define LEMON_ASSERT(exp, msg) (static_cast<void>(0)) |
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# define LEMON_FIXME(msg) (static_cast<void>(0)) |
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# define LEMON_DEBUG(exp, msg) (static_cast<void>(0)) |
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# else |
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# define LEMON_ASSERT(exp, msg) \ |
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(static_cast<void> (!!(exp) ? 0 : ( \ |
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LEMON_ASSERT_HANDLER(__FILE__, __LINE__, \ |
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LEMON_FUNCTION_NAME, \ |
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::lemon::_assert_bits::cstringify(msg), \ |
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#exp), 0))) |
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# define LEMON_FIXME(msg) \ |
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(LEMON_ASSERT_HANDLER(__FILE__, __LINE__, LEMON_FUNCTION_NAME, \ |
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::lemon::_assert_bits::cstringify(msg), \ |
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static_cast<const char*>(0))) |
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# if LEMON_ENABLE_DEBUG |
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# define LEMON_DEBUG(exp, msg) \ |
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(static_cast<void> (!!(exp) ? 0 : ( \ |
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LEMON_ASSERT_HANDLER(__FILE__, __LINE__, \ |
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LEMON_FUNCTION_NAME, \ |
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::lemon::_assert_bits::cstringify(msg), \ |
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@@ -44,20 +44,15 @@ |
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} |
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void assertion_text_disable() {
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LEMON_ASSERT(false, "This is a fault message"); |
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} |
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void fixme_disable() {
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LEMON_FIXME("fixme_disable() is fixme!");
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} |
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void check_assertion_disable() {
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no_assertion_text_disable(); |
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assertion_text_disable(); |
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fixme_disable(); |
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} |
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#undef LEMON_DISABLE_ASSERTS |
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//checking custom assert handler |
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#define LEMON_ASSERT_CUSTOM |
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@@ -75,21 +70,16 @@ |
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} |
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void assertion_text_custom() {
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LEMON_ASSERT(false, "This is a fault message"); |
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} |
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void fixme_custom() {
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LEMON_FIXME("fixme_custom() is fixme!");
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} |
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void check_assertion_custom() {
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no_assertion_text_custom(); |
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assertion_text_custom(); |
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fixme_custom(); |
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check(cnt == 2, "The custom assert handler does not work"); |
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check(cnt == 1, "The custom assert handler does not work"); |
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} |
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#undef LEMON_ASSERT_CUSTOM |
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int main() {
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