There seems to be more than one problem that causes the exception handler ("catch") to
get lost on Windows:
* Throwing from a constructor called from a member function of another object of the same
class. That's fixed here for the GncNumeric string constructor, but there's at least one other
instance I'm still working on in GncNumeric::to_decimal.
* Hidden memory allocation in a stack-allocated object like std::string, std::istringstream,
or boost::smatch: The throw causes the object to go out of scope which calls its destructor
and in that case the catch reference is either lost or never compiled in.
This change ifdefs out the creation of detailed exception messages on Windows to avoid
the destruction of the std::istringstream and its attached std::string, creates a series of
helper functions to ensure that the boost::smatch is in a non-throwing scope, and puts the
computed values directly into the member variables instead of delegating the construction
to a temporary and then copying out the values. The last item is more correct anyway, as
C++ constructor delegation is supposed to happen in the member initialization part rather
than the function body.
With these changes the exceptions from the GncNumeric string constructor are handled
correctly.
This directory contains code for the accounting engine.
Its fairly clean but far from perfect, and it certainly
lacks advanced features.
There should be no GUI code in this subdirectory, and,
ideally, it should build cleanly and independently of
any GUI elements or assumptions.
For design documentation, please see the file "design.txt",
and also, look at the header files carefully. The documentation
for each routine is in the header files for that routine.
September 1998
4746054635