Req #68593 [Opn->Dup]: Namespace not resolved at runtime like with static::
| From: | requinix@php.net | Date: | Thu, 11 Dec 2014 22:37:07 +0000 |
| Subject: | Req #68593 [Opn->Dup]: Namespace not resolved at runtime like with static:: | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-189022@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=68593&edit=1
ID: 68593
Updated by: requinix@php.net
Reported by: llmll at gmx dot de
Summary: Namespace not resolved at runtime like with static::
-Status: Open
+Status: Duplicate
Type: Feature/Change Request
Package: Scripting Engine problem
Operating System: any
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
No. We argued about this in your other bug report.
The. Current. Behavior. Is. Correct.
If you feel the documentation needs clarification to explain the resolution process better - that
unqualified class names in code are always resolved according to the namespace WHERE THE CODE IS
ACTUALLY WRITTEN - then submit a patch against it:
1. Go to the relevant page and click the Edit link in the top-right corner
2. Log in (or stay anonymous)
3. Make your change to the documentation's source XML
4. Save and submit the change for review
Previous Comments:
------------------------------------------------------------------------
[2014-12-11 22:07:26] llmll at gmx dot de
Description:
------------
The problem is equivalent to self:: and static:: but on the namespace realm. self:: resolves to the
defining class while static:: resolves to the current instance class.
Take a second to understand the test script and expected result.
Reopening #68485 as current behaviour deviates clearly from the documentation, which the original
maintainer failed to grasp.
Test script:
---------------
// original namespace
namespace Alpha;
class Helper {
public static $Value = "ALPHA";
}
class Caller {
public static function Write() {
// call to relative neighbour class Helper, resolves to \Alpha\Helper::
echo Helper::$Value;
}
}
// now both classes are inherited into another namespace
namespace Beta;
class Helper extends \Alpha\Helper {
public static $Value = 'BETA';
}
class Caller extends \Alpha\Caller {}
\Beta\Caller::Write();
Expected result:
----------------
This should print "BETA". PHP namespace resolution documentation states:
Inside namespace (say A\B), calls to unqualified or qualified class names (not fully qualified class
names) are resolved at >>> RUN-TIME <<<. This only makes sense, if at runtime the
current class scope and the current namespace are taken into account to resolve the class. Otherwise
resolving at runtime or at compiletime makes no difference.
Actual result:
--------------
The call to Helper::$Value is resolved at complie-time which is breaking inheritance logic.
Helper:: should resolve to the instance namespace, because it is called without a namespace
qualifier, meaning we want the relative class to the current namespace. Otherwise we could have
written the fully-qualified \Alpha\Helper to fix the used Helper class, even in child classes.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=68593&edit=1