Today we have 59872 lines of Lisp and Boot code in src/interp
(4100 lines of Lisp and 55772 lines of Boot). That is decrease
by 1522 compared to FriCAS 1.3.11. As I wrote eventually
I would like to limit Lisp to lowest level support code and
move other functionality to Spad code. If we extrapolate
linearly, it does not look good, at current speed it would
take 30-50 years. But I think that situation is somewhat
better. Main obstacle to convertion is typeless nature
of past Boot code and reliance on various pieces of Lisp
semantics which do not translate well to Spad. After
several years of cleanups this improved quite a lot.
Namely, now several places in Boot code accept only a
single type. Various Lisp "specials" are limited, mostly
to places where they are strictly necessary. Also,
there are pieces of Boot code for which I have written
replacement in Spad (or could be easily converted),
but we use Boot version because functions need to be
called from Boot and calling from Boot to Spad was
rather inconvenient. Now we have somewhat better way to
call Spad, not entirely satisfactory, but it allowed
to use functions from 'BasicKeyedAccessFile' in
interpreter.
I hope to replace current HyperDoc code in Boot by
Spad version. More about this in another mail,
but let me say that part (probably 10%) is done
in my developement version. When done this would
remove few thousends lines of Boot code and ease
moving other parts to Spad.
Also, currently most of decrease of use of Boot is
due to simplification of code. As functionality is
moved to Spad what Boot code should have less
responsibility which should allow more simplification
(and ease rewrite of remaining parts).
Anyway, I hope that that speed of removal of Boot
code will increase, it will take time but may be
much faster than simple extrapolation would predict.
--
Waldek Hebisch
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