[Libreoffice] [PUSHED] [PATCH] [RFC] COMPRESSMODE_FULL

Thorsten Behrens thb at documentfoundation.org
Mon Jan 9 06:15:16 PST 2012


Hi Matteo,

sorry for the lag, hope you had a great holiday season -

Matteo Casalin wrote:
>     just and after-thought: some of the cleaned-up I/Os regard
> variables of type "long" (Pair, Rectangle...). I was afraid this
> could be platform dependent, but it seems that SvStream casts them
> to int "if(SAL_TYPES_SIZEOFLONG != 4)". The question then becomes:
> do that data really need to be of type long? Rectangle, for example,
> are widely used, and type long doubles their size in 64-bit
> machines.
> 
Yes, it looks unfortunate. Problem is, this type is exposed on the
class interface, so you'll create substantial follow-on work on all
places that work with those values. It might not be worth the
effort, e.g. vcl is full of long arithmetic.

> I plan to fix some issues I noticed in ValueSet handling (color
> selection in option dialog). I also would like to reduce memory
> footprint of that code (e.g. ValueSetItem: use a union instead of
> allocating multiple data types which are handled in a mutually
> exclusive way. I think that a template with specializations would be
> overkill in this case, but any suggestion regarding this is really
> welcome: maybe unions are not appreciated).
> 
First check if that's worth the effort - how many instances are
typically created? Unions are fine I guess - or have a look at

 http://www.boost.org/doc/libs/1_48_0/doc/html/any.html

Cheers,

-- Thorsten
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