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Diff for /gforth/Attic/kernal.fs between versions 1.12 and 1.16

version 1.12, 1994/07/21 10:52:44 version 1.16, 1994/08/31 16:37:48
Line 142  Defer source Line 142  Defer source
   dup count chars bounds    dup count chars bounds
   ?DO  I c@ toupper I c! 1 chars +LOOP ;    ?DO  I c@ toupper I c! 1 chars +LOOP ;
 : (name)  ( -- addr )  bl word ;  : (name)  ( -- addr )  bl word ;
 \ : (cname) ( -- addr )  bl word capitalize ;  : sname ( -- c-addr count )
       source 2dup >r >r >in @ /string (parse-white)
       2dup + r> - 1+ r> min >in ! ;
   \    name count ;
   
 \ Literal                                              17dec92py  \ Literal                                              17dec92py
   
Line 203  Create bases   10 ,   2 ,   A , 100 , Line 206  Create bases   10 ,   2 ,   A , 100 ,
   REPEAT  THEN  2drop rdrop dpl off  ELSE    REPEAT  THEN  2drop rdrop dpl off  ELSE
   2drop rdrop r> IF  dnegate  THEN    2drop rdrop r> IF  dnegate  THEN
   THEN r> base ! ;    THEN r> base ! ;
   : snumber? ( c-addr u -- 0 / n -1 / d 0> )
       s>number dpl @ 0=
       IF
           2drop false  EXIT
       THEN
       dpl @ dup 0> 0= IF
           nip
       THEN ;
 : number? ( string -- string 0 / n -1 / d 0> )  : number? ( string -- string 0 / n -1 / d 0> )
   dup count s>number dpl @ 0= IF  2drop false  EXIT  THEN      dup >r count snumber? dup if
   rot drop dpl @ dup 0> 0= IF  nip  THEN ;          rdrop
       else
           r> swap
       then ;
 : s>d ( n -- d ) dup 0< ;  : s>d ( n -- d ) dup 0< ;
 : number ( string -- d )  : number ( string -- d )
   number? ?dup 0= abort" ?"  0< IF s>d THEN ;    number? ?dup 0= abort" ?"  0< IF s>d THEN ;
Line 304  hex Line 318  hex
   
 Defer parser  Defer parser
 Defer name      ' (name) IS name  Defer name      ' (name) IS name
 Defer notfound  Defer notfound ( c-addr count -- )
   
 : no.extensions  ( string -- )  IF  -&13 bounce  THEN ;  : no.extensions  ( addr u -- )  2drop -&13 bounce ;
   
 ' no.extensions IS notfound  ' no.extensions IS notfound
   
 : interpret  : interpret
   BEGIN  ?stack name dup c@  WHILE  parser  REPEAT drop ;      BEGIN
           ?stack sname dup
 \ interpreter compiler                                 30apr92py      WHILE
           parser
 : interpreter  ( name -- ) find ?dup      REPEAT
   IF  1 and  IF execute  EXIT THEN  -&14 throw  THEN      2drop ;
   number? 0= IF  notfound THEN ;  
   \ sinterpreter scompiler                                 30apr92py
   
   : sinterpreter  ( c-addr u -- ) 
       \ interpretation semantics for the name/number c-addr u
       2dup sfind dup
       IF
           1 and
           IF \ not restricted to compile state?
               nip nip execute  EXIT
           THEN
           -&14 throw
       THEN
       drop
       2dup 2>r snumber?
       IF
           2rdrop
       ELSE
           2r> notfound
       THEN ;
   
 ' interpreter  IS  parser  ' sinterpreter  IS  parser
   
 : compiler     ( name -- ) find  ?dup  : scompiler     ( c-addr u -- )
   IF  0> IF  execute EXIT THEN compile, EXIT THEN number? dup      \ compilation semantics for the name/number c-addr u
   IF  0> IF  swap postpone Literal  THEN  postpone Literal      2dup sfind dup
   ELSE  drop notfound  THEN ;      IF
           0>
           IF
               nip nip execute EXIT
           THEN
           compile, 2drop EXIT
       THEN
       drop
       2dup snumber? dup
       IF
           0>
           IF
               swap postpone Literal
           THEN
           postpone Literal
           2drop
       ELSE
           drop notfound
       THEN ;
   
 : [     ['] interpreter  IS parser state off ; immediate  : [     ['] sinterpreter  IS parser state off ; immediate
 : ]     ['] compiler     IS parser state on  ;  : ]     ['] scompiler     IS parser state on  ;
   
 \ locals stuff needed for control structures  \ locals stuff needed for control structures
   
Line 489  variable dead-code \ true if normal code Line 540  variable dead-code \ true if normal code
 \ This is the preferred alternative to the idiom "?DUP IF", since it can be  \ This is the preferred alternative to the idiom "?DUP IF", since it can be
 \ better handled by tools like stack checkers  \ better handled by tools like stack checkers
     POSTPONE ?dup POSTPONE if ;       immediate restrict      POSTPONE ?dup POSTPONE if ;       immediate restrict
 : ?DUP-NOT-IF \ general  : ?DUP-0=-IF \ general
     POSTPONE ?dup POSTPONE 0= POSTPONE if ; immediate restrict      POSTPONE ?dup POSTPONE 0= POSTPONE if ; immediate restrict
   
 : THEN ( orig -- )  : THEN ( orig -- )
Line 729  Avariable leave-sp  leave-stack 3 cells Line 780  Avariable leave-sp  leave-stack 3 cells
 \ information through global variables), but they are useful for dealing  \ information through global variables), but they are useful for dealing
 \ with existing/independent defining words  \ with existing/independent defining words
   
 defer header  defer (header)
   defer header ' (header) IS header
   
 : name,  ( "name" -- )  : name,  ( "name" -- )
     name c@      name c@
     dup $1F u> -&19 and throw ( is name too long? )      dup $1F u> -&19 and throw ( is name too long? )
     1+ chars allot align ;      1+ chars allot align ;
   
 : input-stream-header ( "name" -- )  : input-stream-header ( "name" -- )
     \ !! this is f83-implementation-dependent      \ !! this is f83-implementation-dependent
     align here last !  -1 A,      align here last !  -1 A,
Line 742  defer header Line 795  defer header
   
 : input-stream ( -- )  \ general  : input-stream ( -- )  \ general
 \ switches back to getting the name from the input stream ;  \ switches back to getting the name from the input stream ;
     ['] input-stream-header IS header ;      ['] input-stream-header IS (header) ;
   
 ' input-stream-header IS header  ' input-stream-header IS (header)
   
 \ !! make that a 2variable  \ !! make that a 2variable
 create nextname-buffer 32 chars allot  create nextname-buffer 32 chars allot
Line 762  create nextname-buffer 32 chars allot Line 815  create nextname-buffer 32 chars allot
     dup $1F u> -&19 and throw ( is name too long? )      dup $1F u> -&19 and throw ( is name too long? )
     nextname-buffer c! ( c-addr )      nextname-buffer c! ( c-addr )
     nextname-buffer count move      nextname-buffer count move
     ['] nextname-header IS header ;      ['] nextname-header IS (header) ;
   
 : noname-header ( -- )  : noname-header ( -- )
     0 last !      0 last !
Line 770  create nextname-buffer 32 chars allot Line 823  create nextname-buffer 32 chars allot
   
 : noname ( -- ) \ general  : noname ( -- ) \ general
 \ the next defined word remains anonymous. The xt of that word is given by lastxt  \ the next defined word remains anonymous. The xt of that word is given by lastxt
     ['] noname-header IS header ;      ['] noname-header IS (header) ;
   
 : lastxt ( -- xt ) \ general  : lastxt ( -- xt ) \ general
 \ xt is the execution token of the last word defined. The main purpose of this word is to get the xt of words defined using noname  \ xt is the execution token of the last word defined. The main purpose of this word is to get the xt of words defined using noname
Line 839  Create ???  0 , 3 c, char ? c, char ? c, Line 892  Create ???  0 , 3 c, char ? c, char ? c,
           
 \ IS Defer What's Defers TO                            24feb93py  \ IS Defer What's Defers TO                            24feb93py
   
 : Defer  : Defer ( -- )
   Create ( -- )       \ !! shouldn't it be initialized with abort or something similar?
     ['] noop A,      Header Reveal [ :dodefer ] Literal cfa,
   DOES> ( ??? )      ['] noop A, ;
     @ execute ;  \     Create ( -- ) 
   \       ['] noop A,
   \     DOES> ( ??? )
   \       @ execute ;
   
 : IS ( addr "name" -- )  : IS ( addr "name" -- )
     ' >body      ' >body
Line 936  Variable warnings  G -1 warnings T ! Line 992  Variable warnings  G -1 warnings T !
  then   then
  2drop 2drop ;   2drop 2drop ;
   
 : find   ( addr -- cfa +-1 / string false )  dup  : sfind ( c-addr u -- xt n / 0 )
   count search @ search-wordlist  dup IF  rot drop  THEN ;      search @ search-wordlist ;
   
   : find   ( addr -- cfa +-1 / string false )
       \ !! not ANS conformant: returns +-2 for restricted words
       dup count sfind dup if
           rot drop
       then ;
   
 : reveal ( -- )  : reveal ( -- )
  last? if   last? if
Line 947  Variable warnings  G -1 warnings T ! Line 1009  Variable warnings  G -1 warnings T !
   
 : rehash  ( wid -- )  dup cell+ @ cell+ cell+ @ execute ;  : rehash  ( wid -- )  dup cell+ @ cell+ cell+ @ execute ;
   
 : '    ( "name" -- addr )  name find 0= no.extensions ;  : '    ( "name" -- addr )  name find 0= if drop -&13 bounce then ;
 : [']  ( "name" -- addr )  ' postpone ALiteral ; immediate  : [']  ( "name" -- addr )  ' postpone ALiteral ; immediate
 \ Input                                                13feb93py  \ Input                                                13feb93py
   
 07 constant #bell  07 constant #bell
 08 constant #bs  08 constant #bs
   09 constant #tab
 7F constant #del  7F constant #del
 0D constant #cr                \ the newline key code  0D constant #cr                \ the newline key code
 0A constant #lf  0A constant #lf
   0C constant #ff
   
 : bell  #bell emit ;  : bell  #bell emit ;
   
Line 1105  create nl$ 1 c, A c, 0 c, \ gnu includes Line 1169  create nl$ 1 c, A c, 0 c, \ gnu includes
   
 \ */MOD */                                              17may93jaw  \ */MOD */                                              17may93jaw
   
   \ !! I think */mod should have the same rounding behaviour as / - anton
 : */mod >r m* r> sm/rem ;  : */mod >r m* r> sm/rem ;
   
 : */ */mod nip ;  : */ */mod nip ;
Line 1227  Variable argc Line 1292  Variable argc
             dup >r DoError cr r> negate (bye)              dup >r DoError cr r> negate (bye)
         THEN          THEN
     THEN      THEN
     ." GNU Forth 0.0alpha, Copyright (C) 1994 Free Software Foundation" cr      cr
     ." GNU Forth comes with ABSOLUTELY NO WARRANTY; for details type `license'"       ." GNU Forth 0.0alpha, Copyright (C) 1994 Free Software Foundation, Inc." cr
     cr quit ;      ." GNU Forth comes with ABSOLUTELY NO WARRANTY; for details type `license'" cr
       ." Type `bye' to exit"
       quit ;
   
 : license ( -- ) cr  : license ( -- ) cr
  ." This program is free software; you can redistribute it and/or modify" cr   ." This program is free software; you can redistribute it and/or modify" cr
  ." it under the terms of the GNU General Public License as published by" cr   ." it under the terms of the GNU General Public License as published by" cr
  ." the Free Software Foundation; either version 1, or (at your option)" cr   ." the Free Software Foundation; either version 2 of the License, or" cr
  ." any later version." cr cr   ." (at your option) any later version." cr cr
   
  ." This program is distributed in the hope that it will be useful," cr   ." This program is distributed in the hope that it will be useful," cr
  ." but WITHOUT ANY WARRANTY; without even the implied warranty of" cr   ." but WITHOUT ANY WARRANTY; without even the implied warranty of" cr
Removed from v.1.12  
changed lines
  Added in v.1.16

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