Re: Is Java useful for writing (C/C++) compiler

Jonathan Barker <jandk@easynet.co.uk> wrote:
>Exceptions have to be implemented somehow, don't they? The Java
>language specification tells us the syntax and semantics of
>exceptions, but it doesn't tell us how that translates into native
>object code.
>
>[describes one implementation]


Actually it is quite possible to implement exceptions such that they
are raised in constant time, just by setting the program counter and
stack pointer. See
http://www.eecs.harvard.edu/nr/pubs/c--exn-abstract.html for some
information about how to do this. Also David Chase's two papers
(cited in the bibliography) from the Journal of C Language Translation
are excellent.
--
Norman Ramsey
http://www.eecs.harvard.edu/~nr

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