Clint,
Additionally, one more comment related to the read-only and
write-only. I noticed that you're using E_ERROR for improper access.
Obviously you don't want this to be a warning, as the execution
shouldn't continue because that would be undefined. However, what
about setting it to E_RECOVERABLE_ERROR, so that it can be captured
and recovered from...? The engine wouldn't be in an unstable state,
so if we install an error_handler that throws an exception, there's no
reason to force-terminate the application...
I guess I'm just adverse to using E_ERROR except for cases where it's
literally not safe to continue (usually because the engine is put in
an inconsistent state)...
Anthony
On Tue, Apr 24, 2012 at 8:31 AM, Clint M Priest <cpri...@zerocue.com> wrote:
> I've updated the RFC to include details on adding isset/unset as well as
> references, detailed below:
>
> isset/unset:
>
> class TimePeriod {
> private $Seconds = 3600;
>
> public $Hours {
> get { return $this->Seconds / 3600; }
> set { $this->Seconds = $value; }
> isset { return !is_null($this->Seconds); }
> unset { $this->Seconds = NULL; }
> }
> }
>
> References:
>
>
> class SampleClass {
>
> private $_dataArray = array(1,2,5,3);
>
>
>
> public $dataArray {
>
> &get { return &$this->_dataArray; }
>
> }
>
> }
>
>
>
> $o = new SampleClass();
>
> sort($o->dataArray);
>
> /* $o->dataArray == array(1,2,3,5); */
>
> Comments?
>
> These would also include automatic implementations which call the respective
> functions on the backing field. I could see only allowing isset/unset
> automatic implementations if get/set were also specified as automatic
> implementations.
>
> Default implementations of isset/unset
>
> I'm also fielding comments/ideas on a way to always provide automatic
> implementations of isset/unset for any accessor that didn't define one
> automatically. One idea was for the isset (unspecified implementation) which
> would return true if the getter provided any value which evaluated to true,
> such as this:
>
> class TimePeriod {
> private $Seconds = 3600;
>
> public $Hours {
> get { return $this->Seconds / 3600; }
> set { $this->Seconds = $value; }
> }
> }
> /* Default Implementation Concept */
>
> isset { return (int)$this->Hours; }
> unset { $this->Hours = NULL; }
>
> Note that the automatic implementation of unset is not strictly the same as
> an unset() but without any sort of unset implementation a call to unset()
> would do nothing. Alternatively we could throw an error to a call on isset
> and/or unset against a property which didn't define an implementation.
>
> Thoughts?
>
> -Clint
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