Hi Paul,
On May 30, 2010, at 9:51 PM, Paul Howson wrote:
> On 31/05/2010, at 11:47 AM, Laurent Sansonetti wrote:
>
>> Hi Paul,
>>
>> I believe that here the function is typed to return an anonymous struct
>> (likely a bug in the bridgesupport file), so MacRuby won't be able to
>> associate it as an NSRange. You may be able to access location using
>> string_range[0] and length using string_range[1].
>>
>> Laurent
>
> Thanks Laurent.
>
> That appears not to work:
>
> undefined method `[]' for #<Boxed:0x2006947a0> (NoMethodError)
I see :( Could you file a ticket about this? I believe we should expose the
structure fields for these special Boxed objects.
> Is the bridgesupport file produced elsewhere within Apple? (i.e. out of your
> control)
Yep, the file ships with the system, so we have full control. I just checked
and the problem has been fixed in the new version of BridgeSupport that we are
working on.
> Any other suggestions for getting around this bug?
It is possible to fix the problem by manually editing the file.
/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/Resources/BridgeSupport/CoreText.bridgesupport
Then, locate the description of CTLineGetStringRange. It should be something
like:
<function name='CTLineGetStringRange'>
<arg type='^{__CTLine=}'/>
<retval type64='{?=qq}' type='{?=ii}'/>
</function>
And replace with:
<function name='CTLineGetStringRange'>
<arg type='^{__CTLine=}'/>
<retval type64='{_CFRange=qq}' type='{_CFRange=ii}'/>
</function>
I understand that editing the file manually is probably not an option if you
intend to ship the project later, but I think we can add a fix in trunk to
expose the fields. We can maybe find another workaround if needed.
Laurent
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