How Can I Get the Current Class Name in C ?

Macro Equivalent of FUNCTION for Class Name

Developers often encounter the need to access the current function's name using the FUNCTION macro in C . However, a similar macro for accessing the class name is not immediately apparent.

Alternative Solutions

While there exists no exact equivalent of FUNCTION for class names, alternative approaches can provide this information. Using typeid(*this).name() can be employed, but it presents a limitation in static method calls.

PRETTY_FUNCTION and Third-Party Macros

The PRETTY_FUNCTION macro returns both the function and class names. However, its use is specific to GCC compilers.

One can also leverage third-party macros, such as the METHOD_NAME and CLASS_NAME macros, to extract the class and method names, as demonstrated in the example code below:

inline std::string methodName(const std::string& prettyFunction) {
    ...
}

#define __METHOD_NAME__ methodName(__PRETTY_FUNCTION__)

...

inline std::string className(const std::string& prettyFunction) {
    ...
}

#define __CLASS_NAME__ className(__PRETTY_FUNCTION__)

These macros handle the complexities of parsing the class and method names from __PRETTY_FUNCTION__, including cases where there is no class.

Conclusion

While C lacks a direct equivalent to FUNCTION for class names, PRETTY_FUNCTION and third-party macros offer viable alternatives for accessing both the method and class names, ensuring code maintainability and readability in various scenarios.

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