dialer/boot.jor

0 const 0
1 const 1
2 const cell
: cells cell * ;

10 const '\n'
13 const '\r'
key  const sp

128 const F_IMMEDIATE
0x100 const F_USERWORD

: cr '\n' emit ;
: bl sp emit ;

: if ' BZ_ , here 0 , ; immediate
: else ' GOTO_ , 0 , here swap ! here cell - ; immediate
: then here swap ! ; immediate

: begin here ; immediate
: while ' BZ_ , here 0 , ; immediate
: repeat ' GOTO_ , swap , here swap ! ; immediate
: again ' GOTO_ , , ; immediate
: until ' BZ_ , , ; immediate

: lit ' LIT_ , , ;
: ( begin key [ key ) lit ] = until ; immediate

: inline| ' INLINEDATA_ , here 0 , ;
: |inline [ ' then , ] ;

' cells @ const $DOCOLON ( get the colon execution token )
: :| inline| $DOCOLON , ; immediate
: |; ' return , |inline ; immediate

: s" state if inline| else here then
    begin key dup [ key " lit ] != over 0 != and while b, repeat drop 0 b,
    state if |inline else dup here! then ; immediate

: interpretword F_IMMEDIATE & state not or if execute else , then ;
: interpretnumber state if lit then ;
: interpretunknown type s" ?" type cr ;
: compileword lookup dup
    if interpretword
    else drop number
      if interpretnumber
      else interpretunknown
      then
    then ;
: interpreter
  begin word dup b@ while compileword repeat drop ;
: loadfp ( -- )
  infile @ >r
  fdeactivate infile !
  interpreter
  infile @ factivate
  <r infile ! ;
: loadfile ( filename -- ) fdeactivate >r open loadfp close <r factivate ;

( image loading )
: noop ;

: defer word new-word $DODEFERRED , ' noop , ;
: redefine ( cp cpdeferred ) cell + ! ;
: definition ( cpdeferred ) cell + @ ;