Diff for /gforth/glocals.fs between versions 1.7 and 1.14

version 1.7, 1994/09/12 19:00:30 version 1.14, 1995/10/16 18:33:10
Line 61 Line 61
 \ Currently locals may only be  \ Currently locals may only be
 \ defined at the outer level and TO is not supported.  \ defined at the outer level and TO is not supported.
   
 include search-order.fs  require search-order.fs
 include float.fs  require float.fs
   
 : compile-@local ( n -- )  : compile-@local ( n -- ) \ gforth compile-fetch-local
  case   case
     0       of postpone @local0 endof      0       of postpone @local0 endof
     1 cells of postpone @local1 endof      1 cells of postpone @local1 endof
Line 73  include float.fs Line 73  include float.fs
    ( otherwise ) dup postpone @local# ,     ( otherwise ) dup postpone @local# ,
  endcase ;   endcase ;
   
 : compile-f@local ( n -- )  : compile-f@local ( n -- ) \ gforth compile-f-fetch-local
  case   case
     0        of postpone f@local0 endof      0        of postpone f@local0 endof
     1 floats of postpone f@local1 endof      1 floats of postpone f@local1 endof
Line 134  variable locals-dp \ so here's the speci Line 134  variable locals-dp \ so here's the speci
     postpone lp@ postpone c! ;      postpone lp@ postpone c! ;
   
 : create-local ( " name" -- a-addr )  : create-local ( " name" -- a-addr )
         \ defines the local "name"; the offset of the local shall be stored in a-addr      \ defines the local "name"; the offset of the local shall be
       \ stored in a-addr
     create      create
         immediate          immediate restrict
         here 0 , ( place for the offset ) ;          here 0 , ( place for the offset ) ;
   
 : lp-offset ( n1 -- n2 )  : lp-offset ( n1 -- n2 )
Line 152  variable locals-dp \ so here's the speci Line 153  variable locals-dp \ so here's the speci
 vocabulary locals-types \ this contains all the type specifyers, -- and }  vocabulary locals-types \ this contains all the type specifyers, -- and }
 locals-types definitions  locals-types definitions
   
 : W:  : W: ( "name" -- a-addr xt ) \ gforth w-colon
     create-local ( "name" -- a-addr xt )      create-local
         \ xt produces the appropriate locals pushing code when executed          \ xt produces the appropriate locals pushing code when executed
         ['] compile-pushlocal-w          ['] compile-pushlocal-w
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         \ compiles a local variable access          \ compiles a local variable access
         @ lp-offset compile-@local ;          @ lp-offset compile-@local ;
   
 : W^  : W^ ( "name" -- a-addr xt ) \ gforth w-caret
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-w          ['] compile-pushlocal-w
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         postpone laddr# @ lp-offset, ;          postpone laddr# @ lp-offset, ;
   
 : F:  : F: ( "name" -- a-addr xt ) \ gforth f-colon
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-f          ['] compile-pushlocal-f
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         @ lp-offset compile-f@local ;          @ lp-offset compile-f@local ;
   
 : F^  : F^ ( "name" -- a-addr xt ) \ gforth f-caret
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-f          ['] compile-pushlocal-f
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         postpone laddr# @ lp-offset, ;          postpone laddr# @ lp-offset, ;
   
 : D:  : D: ( "name" -- a-addr xt ) \ gforth d-colon
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-d          ['] compile-pushlocal-d
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         postpone laddr# @ lp-offset, postpone 2@ ;          postpone laddr# @ lp-offset, postpone 2@ ;
   
 : D^  : D^ ( "name" -- a-addr xt ) \ gforth d-caret
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-d          ['] compile-pushlocal-d
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         postpone laddr# @ lp-offset, ;          postpone laddr# @ lp-offset, ;
   
 : C:  : C: ( "name" -- a-addr xt ) \ gforth c-colon
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-c          ['] compile-pushlocal-c
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         postpone laddr# @ lp-offset, postpone c@ ;          postpone laddr# @ lp-offset, postpone c@ ;
   
 : C^  : C^ ( "name" -- a-addr xt ) \ gforth c-caret
     create-local ( "name" -- a-addr xt )      create-local
         ['] compile-pushlocal-c          ['] compile-pushlocal-c
     does> ( Compilation: -- ) ( Run-time: -- w )      does> ( Compilation: -- ) ( Run-time: -- w )
         postpone laddr# @ lp-offset, ;          postpone laddr# @ lp-offset, ;
Line 237  new-locals-map ' new-locals >body cell+ Line 238  new-locals-map ' new-locals >body cell+
 variable old-dpp  variable old-dpp
   
 \ and now, finally, the user interface words  \ and now, finally, the user interface words
 : { ( -- addr wid 0 )  : { ( -- addr wid 0 ) \ gforth open-brace
     dp old-dpp !      dp old-dpp !
     locals-dp dpp !      locals-dp dpp !
     also new-locals      also new-locals
Line 247  variable old-dpp Line 248  variable old-dpp
   
 locals-types definitions  locals-types definitions
   
 : } ( addr wid 0 a-addr1 xt1 ... -- )  : } ( addr wid 0 a-addr1 xt1 ... -- ) \ gforth close-brace
     \ ends locals definitions      \ ends locals definitions
     ] old-dpp @ dpp !      ] old-dpp @ dpp !
     begin      begin
Line 261  locals-types definitions Line 262  locals-types definitions
     previous previous      previous previous
     locals-list TO locals-wordlist ;      locals-list TO locals-wordlist ;
   
 : -- ( addr wid 0 ... -- )  : -- ( addr wid 0 ... -- ) \ gforth dash-dash
     }      }
     [char] } word drop ;      [char] } parse 2drop ;
   
 forth definitions  forth definitions
   
Line 372  forth definitions Line 373  forth definitions
   
 \ explicit scoping  \ explicit scoping
   
 : scope ( -- scope )  : scope ( compilation  -- scope ; run-time  -- ) \ gforth
  cs-push-part scopestart ; immediate   cs-push-part scopestart ; immediate
   
 : endscope ( scope -- )  : endscope ( compilation scope -- ; run-time  -- ) \ gforth
  scope?   scope?
  drop   drop
  locals-list @ common-list   locals-list @ common-list
Line 448  forth definitions Line 449  forth definitions
   
 \ And here's finally the ANS standard stuff  \ And here's finally the ANS standard stuff
   
 : (local) ( addr u -- )  : (local) ( addr u -- ) \ local paren-local-paren
     \ a little space-inefficient, but well deserved ;-)      \ a little space-inefficient, but well deserved ;-)
     \ In exchange, there are no restrictions whatsoever on using (local)      \ In exchange, there are no restrictions whatsoever on using (local)
     \ as long as you use it in a definition      \ as long as you use it in a definition
Line 474  forth definitions Line 475  forth definitions
 : definer! ( definer xt -- )  : definer! ( definer xt -- )
     \ gives the word represented by xt the behaviour associated with definer      \ gives the word represented by xt the behaviour associated with definer
     over 1 and if      over 1 and if
         does-code!          swap [ 1 invert ] literal and does-code!
     else      else
         code-address!          code-address!
     then ;      then ;
   
 \ !! untested  \ !! untested
 : TO ( c|w|d|r "name" -- )  : TO ( c|w|d|r "name" -- ) \ core-ext,local
 \ !! state smart  \ !! state smart
  0 0 0. 0.0e0 { c: clocal w: wlocal d: dlocal f: flocal }   0 0 0. 0.0e0 { c: clocal w: wlocal d: dlocal f: flocal }
  ' dup >definer   ' dup >definer
Line 497  forth definitions Line 498  forth definitions
      OF POSTPONE laddr# >body @ lp-offset, POSTPONE d! ENDOF       OF POSTPONE laddr# >body @ lp-offset, POSTPONE d! ENDOF
      [ ' flocal >definer ] literal       [ ' flocal >definer ] literal
      OF POSTPONE laddr# >body @ lp-offset, POSTPONE f! ENDOF       OF POSTPONE laddr# >body @ lp-offset, POSTPONE f! ENDOF
      abort" can only store TO value or local value"       -&32 throw
    endcase     endcase
  else   else
    [ ' locals-wordlist >definer ] literal =     [ ' locals-wordlist >definer ] literal =
    if     if
      >body !       >body !
    else     else
      abort" can only store TO value"       -&32 throw
    endif     endif
  endif ; immediate   endif ; immediate
   
 : locals|  : locals|
   BEGIN  name 2dup s" |" compare 0=  WHILE      \ don't use 'locals|'! use '{'! A portable and free '{'
          (local)  REPEAT  drop 0 (local) ;  immediate restrict      \ implementation is anslocals.fs
       BEGIN
           name 2dup s" |" compare 0<>
       WHILE
           (local)
       REPEAT
       drop 0 (local) ; immediate restrict

Removed from v.1.7  
changed lines
  Added in v.1.14


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