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duktape/src-input/duk_exception.h

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Add support for C++ exception long ctrl transfers * Define duk_internal_exception, a plain exception class, wihch is used as the value thrown for Duktape internal long control transfers. The value intentionally does not inherit from std::exception so that it'd be as unlikely as possible that user code would catch the internal exception type; only a "catch (...)" would catch it. * Replace DUK_SETJMP() if clauses with "try", and SETJMP() error handling blocks with "catch (duk_internal_exception &exc)" blocks. * Also add clauses for "catch (std::exception &exc)" and "catch (...)" to catch C++ exceptions thrown by user code which are propagated to Duktape try-catch blocks. Such exceptions are converted to API errors. For now it's not supported for user code to propagate a C++ exception "through" Duktape, as that would require some semantics changes to (native) protected calls. Catching and converting such exceptions to API errors makes the user code error apparent and easier to fix.
9 years ago
/*
* Exception for Duktape internal throws when C++ exceptions are used
* for long control transfers.
*
* Doesn't inherit from any exception base class to minimize the chance
* that user code would accidentally catch this exception.
*/
Source fixes for #ifdef and #ifndef convention
8 years ago
#if !defined(DUK_EXCEPTION_H_INCLUDED)
Add support for C++ exception long ctrl transfers * Define duk_internal_exception, a plain exception class, wihch is used as the value thrown for Duktape internal long control transfers. The value intentionally does not inherit from std::exception so that it'd be as unlikely as possible that user code would catch the internal exception type; only a "catch (...)" would catch it. * Replace DUK_SETJMP() if clauses with "try", and SETJMP() error handling blocks with "catch (duk_internal_exception &exc)" blocks. * Also add clauses for "catch (std::exception &exc)" and "catch (...)" to catch C++ exceptions thrown by user code which are propagated to Duktape try-catch blocks. Such exceptions are converted to API errors. For now it's not supported for user code to propagate a C++ exception "through" Duktape, as that would require some semantics changes to (native) protected calls. Catching and converting such exceptions to API errors makes the user code error apparent and easier to fix.
9 years ago
#define DUK_EXCEPTION_H_INCLUDED
#if defined(DUK_USE_CPP_EXCEPTIONS)
class duk_internal_exception {
/* intentionally empty */
};
#endif
#endif /* DUK_EXCEPTION_H_INCLUDED */