Re: GOTO operator
| From: | Sterling Hughes | Date: | Tue, 03 Aug 2004 19:09:35 +0000 |
| Subject: | Re: GOTO operator | ||
| References: | 1 2 3 4 5 6 7 8 9 10 11 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-11881@lists.php.net to get a copy of this message | ||
It can't be doable because it makes writing an optimizer impossible.
-sterling
On Tue, 3 Aug 2004 11:54:28 -0700, Sara Golemon <pollita@php.net> wrote:
> > > If you really, really, really wanted to do such a thing, you could still
> do:
> > >
> > > eval("goto foo$bar;");
> > >
> > > to get the same effect, right?
> >
> > Hmm, depends on how it's implemented. It will most likely not work I
> > guess.
> >
> Nope... eval()'d code is in a separate op_array from the code it's eval()'d
> from. While it has the same variable scope it does not have the same label
> pool. Building in that kind of support is theoretically doable (and you'd
> get support for cross-file gotos in the process), but it complicates the
> execution flow somethin' fierce.
>
>
>
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