[fpc-pascal] How to translate this C header struct to Pascal

[Jeff Wormsley]

Graeme Geldenhuys wrote:
> The first item is 31bit and the second item is 1 bit. Does FPC support
> a record structure that can define bit level sizes?
>   
I've done this kind of thing quite a bit in the past.  Usually, I define 
a "raw" version and a "clean" version, and write two routines to convert 
back and forth.  I read into the raw version, convert to the clean one, 
use that in my application, then if I have to write it back, convert the 
clean back to raw and write it out.  I've been Windows only, but taking 
into account Jonas' advice, you could make converter versions for each 
ABI and ifdef them appropriately, and that would be located in one place 
only, not strewn about your code everywhere you needed to access that 
data.  Its a little bit more work, but it only has to be done once each 
way, and when I'm actually using the data, it saves a ton of mucking 
about in the middle. 

Lately, I've taken to wrapping such data into objects, and using the 
getters and setters to handle getting things from and putting things 
into the right bits, and only having the raw storage.

Of course, if you only need it once, it really doesn't matter where or 
how you convert it.

Jeff.

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