On Mon, 01 Dec 2008 20:40:14 +0100 Florian Klaempfl <[EMAIL PROTECTED]> wrote:
> Mattias Gaertner schrieb: > > On Mon, 01 Dec 2008 16:36:23 +0100 > > Florian Klaempfl <[EMAIL PROTECTED]> wrote: > > > >> [...] Martin Friebe schrieb: > >>> I can not see how I can interpret RtlString[1]. If the result is > >>> bigger than 128, then I must know what type it is. If it is ANSI, > >>> it is a single byte char. If it is utf8, it is a sub-codepoint > >>> which will be part of a codepoint. > >>> If it is widestring, well yes, here breaks my assumption that > >>> RtlString[1] returns a byte.... ouch > >>> > >> I see this as a theoretic consideration. Please give a real world > >> (!) code example when this causes a problem. > > > > Can you give a real world example where a different RTLString for > > each platform solves a problem? > > It solves for example the problem that there are platforms where no > unicode support is available or desired :) > and it avoids unneeded conversions. I understand it 'avoids unneeded conversions' *inside* the RTL, by adding implicit conversions to the code accessing the RTL. > I'd be fine using utf-16 on all platforms :) Me2. At least for the file functions. I have some doubt about the classes.pp. > >> If you assign the result of an rtl function to an rtlstring, this > >> means you don't care about the type of rtlstring[1] or the > >> knowledge, that it's type is rtlchar is enough for you. If you > >> assign it to an ansistring/widestring whatever, you know what you > >> get. > > > > What string type will be TStrings.Items and the many other strings > > in the classes.pp? > > Not yet decided though I'd make them RTLString as well. :( TStrings is dog slow and the only reason, why it was still reasonable was assigning strings was only reference counting. If TStrings uses a platform dependent string, this is a big performance problem. Mattias _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
