EXT C++ Library - exceptions

The EXT C++ Library introduces few more named exception types in <stdexcept> manner that can be thrown by other EXT Library facilities.

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Interface:

All EXT C++ exception types are derived from ext::exception type which is derived from std::runtime_error (which is derived from std::exception). Types derived from ext::exception are these:

• ext::runtime_error
  Introduces single .code member of unsigned int type which is initialized with optional second constructor parameter (default value is 0). The constructed .what() string also contain this number.
• ext::access_denied
  No special features.
• ext::object_not_exists
  No special features.

The exception types are defined in "ext/ext_bits/extexcept" file, include the <ext/c++> header file.

Examples:

#include <ext/c++>
#include <windows.h>

int main () {
    try {
        // ...
        if (!/*...*/)
            throw ext::runtime_error ("?", GetLastError ());
        // ...
    } catch (const std::exception & e) {
        std::printf ("%s\n", e.what ());
    }
};

Remarks

Purpose of exceptions defined for EXT C++ is mainly to improve readability of the source code and to extend base of exception types.

Note that these exception can be thrown by other EXT Library facilities, but it's always documented wherever such possibility exists.

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