[mercury-users] Exception file......

[Fergus Henderson]

On 16-Oct-2002, Noel  Pinto <cool4life at rediffmail.com> wrote:
> In the following piece of code, I can understand how to use 
> 'throw' from the file 'exception'.
> 
> read_int(Int) -->
>         io__read_line_as_string(Result),
>         {       Result = ok(Line),
>                 remove_suffix(Line, "\n", IntString),
>                 string__to_int(IntString, IntVal)
>                 ->
>                 Int = IntVal
>         ;
>                 throw("invalid entry, end-of-file, or I/O 
> error")
>         }.
> 
>  I would like to know various other pred, mode and inst mentioned 
> in the file 'exception'. I mean, I want to know how to use it. Plz 
> do show a small piece of code for each.

There are some example uses of most of the exception handling routines
in the files in the directory hard_coded/exceptions in the Mercury test
suite (the mercury-tests distribution).

There are some example uses of try_io in the sources for the Mercury compiler.
Just grep for it. 

That is, use the Unix (and cygwin) command `grep', e.g.
	grep -n try_io compiler/*.m

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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