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slides1.be2
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×Block Editor 2 --ÓBlocks of DOOM!
ÖMarch 28, 2015
ÐBrad Nelson
×Motivation
Ð----------
×Motivation
Ð----------
Î*×I use text editors everyday
×Motivation
Ð----------
Î*×I use text editors everyday
Î-×Vim
×Motivation
Ð----------
Î*×I use text editors everyday
Î-×Vim
Î*×Forth has a legacy of small powerful editors!
×Motivation
Ð----------
Î*×I use text editors everyday
Î-×Vim
Î*×Forth has a legacy of small powerful editors!
Î*×But they're weird and incompatible...
×Motivation
Ð----------
Î*×I use text editors everyday
Î-×Vim
Î*×Forth has a legacy of small powerful editors!
Î*×But they're weird and incompatible...
Î*×And they lack some useful features...
×Motivation
Ð----------
Î*×I use text editors everyday
Î-×Vim
Î*×Forth has a legacy of small powerful editors!
Î*×But they're weird and incompatible...
Î*×And they lack some useful features...
Î*×Can I add the features I need to them?
×Motivation
Ð----------
Î*×I use text editors everyday
Î-×Vim
Î*×Forth has a legacy of small powerful editors!
Î*×But they're weird and incompatible...
Î*×And they lack some useful features...
Î*×Can I add the features I need to them?
Î*×Without adding back all the complexity?
ÊI want all the cool features.
ÊI want all the cool features.
ÎBut I want to learn from HISTORY...
ÉVIDEO
ÊVIDEO
ËVIDEO
ÌVIDEO
ÍVIDEO
ÎVIDEO
ÏVIDEO
ÐVIDEO
ÑVIDEO
ÒVIDEO
ÓVIDEO
ÔVIDEO
ÕVIDEO
ÖVIDEO
×BLOCKS
Ð------
Î
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
Î*×Dead simple API
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
Î*×Dead simple API
: block ( n -- a )
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
Î*×Dead simple API
: block ( n -- a )
: update
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
Î*×Dead simple API
: block ( n -- a )
: update
: flush
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
Î*×Dead simple API
: block ( n -- a )
: update
: flush
Î*×Used for data
×BLOCKS
Ð------
Î*×1024 byte Forth styleÊvirtual memory
Î*×Dead simple API
: block ( n -- a )
: update
: flush
Î*×Used for data
Î*×Used for source code!
×Blocks for Source Code
Ð----------------------
Î
×Blocks for Source Code
Ð----------------------
Î*×64 x 16 blocks of source code
×Blocks for Source Code
Ð----------------------
Î*×64 x 16 blocks of source code
Î*×Simple words to load blocks
×Blocks for Source Code
Ð----------------------
Î*×64 x 16 blocks of source code
Î*×Simple words to load blocks
: load ( n -- )
×Blocks for Source Code
Ð----------------------
Î*×64 x 16 blocks of source code
Î*×Simple words to load blocks
: load ( n -- )
: thru ( a b -- )
×Block Editors 0
Ð---------------
×Block Editors 0
Ð---------------
Î*×Classic prompt block editor
×Block Editors 0
Ð---------------
Î*×Classic prompt block editor
Î*×1-2 letter commands for line editing
×Block Editors 0
Ð---------------
Î*×Classic prompt block editor
Î*×1-2 letter commands for line editing
Î*×Very small, a few blocks
×Block Editors 0
Ð---------------
Î*×Classic prompt block editor
Î*×1-2 letter commands for line editing
Î*×Very small, a few blocks
Î*×gforth's blocked.fb 1 block docs, 3 blocks code
×Block Editors 0
Ð---------------
Î*×Classic prompt block editor
Î*×1-2 letter commands for line editing
Î*×Very small, a few blocks
Î*×gforth's blocked.fb 1 block docs, 3 blocks code
Î*×RetroForth Editor 1 block! (Charles Childers)
× forth s"×block_data"×open-blocks
×variable blk
×: row dup 64 type 64 + ;
×: header s"×Block:"×type blk @ . cr ;
×: across space 64 0 do [char] - emit loop cr ;
×: line [char] | emit row [char] | emit cr ;
×: lines 16 0 do line loop ;
×: mblock blk @ block ;
×: v page header across mblock lines across drop ;
×: s blk ! v ;
×: i 64 * mblock + swap cmove v update flush ;
×: d 64 * mblock + 64 32 fill v update flush ;
×: x mblock 1024 32 fill v update flush ;
×: e blk @ load ;
× Screen 3 not modified
× 0 \×multi screen commands 29aug95py
× 1 : il pad c/l 'rest insert 'rest drop c/l blank update v ;
× 2 : dl 'rest c/l delete update v ;
× 3 : qx ( -- ) 0 0 at-xy scr @ &60 / &60 * &60 bounds
× 4 DO 3 0 DO [ FORTH ] i 1+ [ EDITOR ] j + dup 3 .r
× 5 space dup scr @ = IF rvson THEN
× 6 block &20 type rvsoff LOOP cr 3 +LOOP ;
× 7 : nx &60 scr @ + scr ! qx ;
× 8 : bx -&60 scr @ + 0 max scr ! qx ;
× 9 : n scr @ 1+ l r#×off ;
× 10 : b scr @ 1- l r#×off ;
× 11 : s ( n -- / n ) >r
× 12 BEGIN ['] f catch WHILE scr @ r@ = IF rdrop EXIT THEN
× 13 scr @ r@ u< IF n ELSE b THEN REPEAT r> ;
× 14 Forth definitions
× 15
× ok
Ó il : square dup * ;
×Block Editors 1
Ð---------------
×Block Editors 1
Ð---------------
Î*×Screen editor
×Block Editors 1
Ð---------------
Î*×Screen editor
Î*×Small source, dozen blocks
×Block Editors 1
Ð---------------
Î*×Screen editor
Î*×Small source, dozen blocks
Î*×Examples:
×Block Editors 1
Ð---------------
Î*×Screen editor
Î*×Small source, dozen blocks
Î*×Examples:
Î-×Pygmy Forth Editor (Frank Sergeant)
×Block Editors 1
Ð---------------
Î*×Screen editor
Î*×Small source, dozen blocks
Î*×Examples:
Î-×Pygmy Forth Editor (Frank Sergeant)
Î-×VIBE (Sam Falvo II)
×Variations
Ð----------
×Variations
Ð----------
Î*×Shadow blocks