On 23.09.2008, at 09:47, Dmitry Stogov wrote:
Stanislav Malyshev wrote:
Hi!
On the ZendCon, we (Marcus, Elizabeth, Andi and myself) had a talk
about
what we'd like to do with namespaces, and we arrived at the following
conclusions, which we propose to implement in 5.3:
1. Allow braces for namespaces. So, the syntax for namespaces will
be:
a) namespace foo;
should be first (non-comment) statement in the file, namespace
extends
to the end of the file or next namespace declaration.
b) namespace foo {}
can appear anywhere on the top scope (can not be nested).
Mixing both syntaxes in one file is not possible. The semantics of
both
syntaxes will be identical.
2. Simplify resolution order for classes in the namespace:
unqualified
names are resolved this way:
a) check "use" list if the name was defined at "use", follow that
resolution
b) if not, the name resolves to namespace::name
Consequence of this will be that for using internal class inside
namespace one would need to refer to it either as ::Foo or do
use ::Foo
prior to its usage.
3. Functions will not be allowed inside namespaces. We arrived to
conclusion that they are much more trouble than they're worth, and
summarily we would be better off without them. Most of the
functionality
could be easily achieved using static class methods, and the rest
may be
emulated with variable function names, etc.
Comments?
Great, lets castrate the language to make it consistent. :(
1. I am fine with (1), except for unspecified scope of "use" statement
inside namespace with bracket. I assume it should affect only current
declaration and not the following namespace declarations (even with
the
same name).
2. This is acceptable only if we accept (3) otherwise we will need to
write ::strlen() and so on.
3. In case we remove functions we also need to remove constants as
they
have exactly the same ambiguity problems. It's unclear for me what the
following code will define after all (global function or just emit a
parse error?)
<?php
namespace foo {
function bar() {
}
}
?>
Right, Stas, did you also discuss removal of constants? Seems logical
as the really the same arguments apply.
regards,
Lukas Kahwe Smith
[EMAIL PROTECTED]
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