[m-dev.] for review: turn off support for foriegn_code/3+

[Tyson Dowd]

On 13-Mar-2001, Tyson Richard DOWD <trd at cs.mu.OZ.AU> wrote:
> On 22-Jan-2001, Fergus Henderson <fjh at cs.mu.OZ.AU> wrote:
> > On 22-Jan-2001, Tyson Dowd <trd at cs.mu.OZ.AU> wrote:
> > > I don't intend to commit this just yet, but when we have bootstrapped
> > > "enough" I will bootcheck and then commit this.  I am not sure when that will
> > > be.
> > > 
> > > This is *just* for the mercury-latest branch.
> > ...
> > > Estimated hours taken: 2
> > > 
> > > configure.in:
> > > 	Check for foreign_proc, as we require it to work if we wish to
> > > 	bootstrap.
> > > 
> > > compiler/prog_io_pragma.m:
> > > 	Remove support for foreign_code/3+.  
> > > 	We only accept foreign_proc for these cases now.
> > > 
> > > library/*.m:
> > > 	Turn foreign_code/3+ into foreign_proc by applying the
> > > 	following subsitutions:
> > > 
> > > 	First turn all foreign_code into foreign_proc:
> > > 	s/foreign_code\(/foreign_proc\(/g
> > > 
> > > 	Then turn back any foreign_proc with a string as its second
> > > 	argument.
> > >         s/foreign_proc(\("[A-Za-z0-9+]*",[ \t\n]*")/foreign_code$1/g
> > 
> > That looks fine.
> > 
> > I think it would be a good idea to wait a fair while before committing
> > the change to prog_io_pragma.m to remove support for foreign_code/3+
> > (longer than for the other changes).
> 
> I'd just like to say that I didn't get a chance to commit this change
> yet (it got put aside before I went away), but I plan to commit it today
> or tomorrow.
> 
> I will apply this change to the release and the main branches.

This turns out to be a lie.  The release branch doesn't yet understand
foreign_proc, and it's a bit close to freeze to introduce such a change.
I will do it in the next rev.

The consequence is that the release branch cannot compile
mercury-latest (I'm not sure whether this was already the case),
because this change introduces a source level incompatibility.
However, you can work-around by 
	s/foreign_proc/foreign_code/gu
in the library, 

-- 
       Tyson Dowd           # 
                            #  Surreal humour isn't everyone's cup of fur.
     trd at cs.mu.oz.au        # 
http://www.cs.mu.oz.au/~trd #
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