David Robins wrote:
On Thu, 19 Dec 2002, Leopold Toetsch wrote:
Well, what I was getting at was that if dest is, say, a RomanNumeralInteger
whose value is "mcmlxxxiv", I don't want it to waste time converting that to
the integer 1984 when I morph it to a PerlInt, if my next step is to
unilate
On Thu, 19 Dec 2002, Leopold Toetsch wrote:
> David Robins wrote:
> > This method is primarily used when the interpreter has need of
> > coercing a PMC to a particular type, and isn't meant as a general
> > purpose casting tool. Compilers should only emit valid
> > transformations.
> > which d
David Robins wrote:
On Thu, 19 Dec 2002, Leopold Toetsch wrote:
In pdd02_vtables.pod morph() is defined to do exactly this.
This method is primarily used when the interpreter has need of
coercing a PMC to a particular type, and isn't meant as a general
purpose casting tool. Compilers sho
On Thu, 19 Dec 2002, Leopold Toetsch wrote:
> David Robins wrote:
> > On Wed, 18 Dec 2002, Leopold Toetsch wrote:
> >>morph "dest" to be a "ret"?
> >>unimplemented, unused, but your examples seems to be a typical test case.
> > "dest" could be any type, so it's not reasonable to expect any typ
David Robins wrote:
On Wed, 18 Dec 2002, Leopold Toetsch wrote:
always compare ids (vtables may change) - yes, many pmc's do like above,
but will need changes too.
What do you mean by ids? pmc->type()?
Yes, ->vtable->type().
morph "dest" to be a "ret"?
unimplemented, unused, but yo
On Wed, 18 Dec 2002, Leopold Toetsch wrote:
> David Robins wrote:
> > if(value->vtable == &Parrot_base_vtables[enum_class_Vec2D_in_Y_plane]) {
>
> always compare ids (vtables may change) - yes, many pmc's do like above,
> but will need changes too.
What do you mean by ids? pmc->type()?
> >
David Robins wrote:
What's the cleanest way to return a new PMC from an op?
e.g. Suppose I have a Vec2D_in_X_plane and a Vec2D_in_Y_plane and I add them
and want to always produce a Vec3D - is this correct (and is it efficient?):
void add(PMC* value, PMC* dest) {
if(value->vtable == &Par
What's the cleanest way to return a new PMC from an op?
e.g. Suppose I have a Vec2D_in_X_plane and a Vec2D_in_Y_plane and I add them
and want to always produce a Vec3D - is this correct (and is it efficient?):
void add(PMC* value, PMC* dest) {
if(value->vtable == &Parrot_base_vtables[enum_
