[m-rev.] for review: mix mercury code with foreign_proc

[David Overton]

On Mon, Jul 30, 2001 at 05:40:56PM +0200, Tyson Dowd wrote:
> Hi,
> 
> This should make it easier to avoid writing foreign_procs for all those
> "hand-coded for speed" things in the library.
> 
> ===================================================================
> 
> 
> Estimated hours taken: 16
> Branches: main
> 
> Allow foreign_proc clauses to replace Mercury definitions.
> Or alternately viewed, allow the compiler to fall back on Mercury
> definitions of procedures if a suitable foreign_proc clause is unavailable.
> 
> (This is only possible with mode-specific Mercury procedures).
> 
> compiler/hlds_pred.m:
> 	Add a field to clauses_info to record whether we have any
> 	foreign_proc clauses.
> 
> compiler/make_hlds.m:
> 	Record errors if we try to add a foreign_proc that will replace
> 	a Mercury clause that is not mode-specific, or if we try to add
> 	a non-mode specific Mercury clause that will replace a foreign
> 	proc.  

What do you do if there are no mode annotations on the clause, but there
is only one mode declared for the predicate?



David
-- 
David Overton      Department of Computer Science & Software Engineering
PhD Student        The University of Melbourne, Victoria 3010, Australia
+61 3 8344 9159    http://www.cs.mu.oz.au/~dmo
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