Re: [Cardinal-dev] RubyInRuby parser/compiler

[Anders Bengtsson]

David Robins wrote:
> > For example, the following ruby code
> > a=1+2
> >
> > Will have to be quite long.  What we have to do here is
> 
> > * Create a object of type "Fixnum"
> > * Set that object to the value 1
> > * Create another object of type "Fixnum"
> > * Set that object to the value 2
> > * lookup the subrutine "+" in the first object (or maybe it's enough to
> > look that up in the class "Fixnum")
>
> Well, actually I don't think it's that bad, since if we invoke the Parrot
> "add" operation, then it can call the PMC's add function and provide various
> shortcuts, perhaps not having to do a method lookup if the lhs is, say, a
> RubyFixnum or a RubyInteger.  Only the RubyObject PMC need invoke a '+'
> method.

Hi all,

I think it may be hard to avoid doing at least a partial method lookup.
The method '+' can't be overridden on the individual object level for
Fixnums, so the lookup can be done directly at the class level, as Erik
says. But at the class level the method can be changed at any time, so
some kind of lookup has do be done.

What are the plans for Fixnum in Cardinal, will it first be done as
plain non-optimized objects, or is there already work being done on a
"native" integer implementation?

/Anders

-- 

A n d e r s  B e n g t s s o n  |  address@hidden
Stockholm, Sweden               |

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