collapseos/blk/397

( Now we have "as late as possible" stuff. See bootstrap doc. )
: _bchk DUP 0x7f + 0xff > IF LIT" br ovfl" (print) ABORT THEN ;
: DO COMPILE 2>R H@ ; IMMEDIATE
: LOOP COMPILE (loop) H@ - _bchk C, ; IMMEDIATE
( LEAVE is implemented in low xcomp )
: LITN COMPILE (n) , ;
( gets its name at the very end. can't comment afterwards )
: _ BEGIN LIT" )" WORD S= UNTIL ; IMMEDIATE
: _ ( : will get its name almost at the very end )
    (entry) 1 ( compiled ) C,
    BEGIN
        WORD DUP LIT" ;" S= IF DROP 0x0b , EXIT THEN
        FIND IF ( is word ) DUP IMMED? IF EXECUTE ELSE , THEN
        ELSE ( maybe number ) (parse) LITN THEN
    AGAIN ;
Fix doc innacuracies 2020-08-30 16:53:27 -04:00			`( Now we have "as late as possible" stuff. See bootstrap doc. )`
Remove LIT< in favor of LIT" exclusively This duplicated feature existed because of bootstrapping issues with LIT", but again, with careful threading, we can clean things up. We can now have a proper "Collapse OS" prompt :) 2020-09-19 18:51:29 -04:00			`: _bchk DUP 0x7f + 0xff > IF LIT" br ovfl" (print) ABORT THEN ;`
De-stabilize (br), (?br), (loop), (s) When writing the xcomp documentation, I realized that with careful threading and by accepting a bit of code duplication in the xcomp toolset, I could de-stabilize a couple of words. (n) and EXIT are a bit trickier, but I think it can be done. It would be nice to get rid of stable wordrefs... 2020-09-19 13:54:01 -04:00			`: DO COMPILE 2>R H@ ; IMMEDIATE`
			`: LOOP COMPILE (loop) H@ - _bchk C, ; IMMEDIATE`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-15 22:44:49 -04:00			`( LEAVE is implemented in low xcomp )`
De-stabilize (n) 2020-09-19 19:44:15 -04:00			`: LITN COMPILE (n) , ;`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-15 22:44:49 -04:00			`( gets its name at the very end. can't comment afterwards )`
Remove LIT< in favor of LIT" exclusively This duplicated feature existed because of bootstrapping issues with LIT", but again, with careful threading, we can clean things up. We can now have a proper "Collapse OS" prompt :) 2020-09-19 18:51:29 -04:00			`: _ BEGIN LIT" )" WORD S= UNTIL ; IMMEDIATE`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-15 22:44:49 -04:00			`: _ ( : will get its name almost at the very end )`
Make word routines into word types Instead of having wordref point to core word routines, I made them into word 4 word types. It liberates space into the stable ABI and should make porting to other arches easier. I'm also thinking of combining word type with the namelen field for precious bytes saving, but not now... 2020-06-17 21:41:01 -04:00			`(entry) 1 ( compiled ) C,`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-15 22:44:49 -04:00			`BEGIN`
Remove ";" word The ":" now takes care of scanning for ";". Conceptually, having ";" as an immediate word is slightly simpler than the approach in this commit, but when bootstrapping is involved, this simpler approach gets murkier. Moreover, it got even murkier-er when trying to de-stabilize EXIT, so here we are. 2020-09-19 20:19:23 -04:00			`WORD DUP LIT" ;" S= IF DROP 0x0b , EXIT THEN`
			`FIND IF ( is word ) DUP IMMED? IF EXECUTE ELSE , THEN`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-15 22:44:49 -04:00			`ELSE ( maybe number ) (parse) LITN THEN`
			`AGAIN ;`