[gforth] / gforth / see.fs  

gforth: gforth/see.fs

Diff for /gforth/see.fs between version 1.46 and 1.65

version 1.46, Wed Jan 1 17:28:29 2003 UTC version 1.65, Tue Jul 15 16:11:49 2008 UTC
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 \ SEE.FS       highend SEE for ANSforth                16may93jaw  \ SEE.FS       highend SEE for ANSforth                16may93jaw
   
 \ Copyright (C) 1995,2000 Free Software Foundation, Inc.  \ Copyright (C) 1995,2000,2003,2004,2006,2007,2008 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
 \ Gforth is free software; you can redistribute it and/or  \ Gforth is free software; you can redistribute it and/or
 \ modify it under the terms of the GNU General Public License  \ modify it under the terms of the GNU General Public License
 \ as published by the Free Software Foundation; either version 2  \ as published by the Free Software Foundation, either version 3
 \ of the License, or (at your option) any later version.  \ of the License, or (at your option) any later version.
   
 \ This program is distributed in the hope that it will be useful,  \ This program is distributed in the hope that it will be useful,
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 \ GNU General Public License for more details.  \ GNU General Public License for more details.
   
 \ You should have received a copy of the GNU General Public License  \ You should have received a copy of the GNU General Public License
 \ along with this program; if not, write to the Free Software  \ along with this program. If not, see http://www.gnu.org/licenses/.
 \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.  
   
   
 \ May be cross-compiled  \ May be cross-compiled
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 require look.fs  require look.fs
 require termsize.fs  require termsize.fs
 require wordinfo.fs  require wordinfo.fs
 [IFUNDEF] .name  
 : id. ( nt -- ) \ gforth  
     \G Print the name of the word represented by @var{nt}.  
     \ this name comes from fig-Forth  
     name>string type space ;  
   
 ' id. alias .id ( nt -- )  
 \G F83 name for @code{id.}.  
   
 ' id. alias .name ( nt -- )  
 \G Gforth <=0.5.0 name for @code{id.}.  
   
 [THEN]  
   
 decimal  decimal
   
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                 nlflag @ IF (nl) nlflag off THEN                  nlflag @ IF (nl) nlflag off THEN
                 XPos @ over + cols u>= IF (nl) THEN ;                  XPos @ over + cols u>= IF (nl) THEN ;
   
 : c-to-upper ( c1 -- c2 ) \ gforth  
     \ nac05feb1999 there is a primitive, toupper, with this function  
     dup [char] a >= over [char] z <= and if  bl -  then ;  
   
 : ctype         ( adr len -- )  : ctype         ( adr len -- )
                 warp? dup XPos +! C-Output @                  warp? dup XPos +! C-Output @
                 IF uppercase @ IF bounds ?DO i c@ c-to-upper emit LOOP                  IF uppercase @ IF bounds ?DO i c@ toupper emit LOOP
                                   uppercase off ELSE type THEN                                    uppercase off ELSE type THEN
                 ELSE 2drop THEN ;                  ELSE 2drop THEN ;
   
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                     else                      else
                         base @ >r try                          base @ >r try
                             8 base ! 0 <<# # # # '\ hold #> ctype #>> 0                              8 base ! 0 <<# # # # '\ hold #> ctype #>> 0
                         recover                          restore
                               r@ base !
                         endtry                          endtry
                         r> base ! throw                          rdrop throw
                     endif                      endif
                 endif                  endif
                 1 /string                  1 /string
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 : back? ( addr target -- addr flag )  : back? ( addr target -- addr flag )
     over u< ;      over u< ;
   
 : .word ( addr xt -- addr )  : .word ( addr x -- addr )
     look 0= IF      \ print x as a word if possible
         drop dup 1 cells - @ dup body> look      dup look 0= IF
           drop dup threaded>name dup 0= if
               drop over 1 cells - @ dup body> look
         IF          IF
             nip dup ." <" name>string rot wordinfo .string ." >"                  nip nip dup ." <" name>string rot wordinfo .string ." > "
         ELSE          ELSE
             drop ." <" 0 .r ." >"                  2drop ." <" 0 .r ." > "
         THEN          THEN
     ELSE              EXIT
         dup cell+ @ immediate-mask and          then
       THEN
       nip dup cell+ @ immediate-mask and
         IF          IF
             bl cemit  ." POSTPONE "              bl cemit  ." POSTPONE "
         THEN          THEN
         dup name>string rot wordinfo .string          dup name>string rot wordinfo .string
     THEN ;      ;
   
 : c-call ( addr1 -- addr2 )  : c-call ( addr1 -- addr2 )
     Display? IF      Display? IF
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     cell+ ;      cell+ ;
   
 : .name-without ( addr -- addr )  : .name-without ( addr -- addr )
       \ !! the stack effect cannot be correct
 \ prints a name without a() e.g. a(+LOOP) or (s")  \ prints a name without a() e.g. a(+LOOP) or (s")
     dup 1 cells - @ look IF      dup 1 cells - @ threaded>name dup IF
         name>string over c@ 'a = IF          name>string over c@ 'a = IF
             1 /string              1 /string
         THEN          THEN
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     \ if f is false, addr2=addr1      \ if f is false, addr2=addr1
     \ recognizes the following patterns:      \ recognizes the following patterns:
     \ c":     ahead X: len string then lit X      \ c":     ahead X: len string then lit X
       \ flit:   ahead X: float      then lit X f@
     \ s\":    ahead X: string then lit X lit len      \ s\":    ahead X: string then lit X lit len
     \ .\":    ahead X: string then lit X lit len type      \ .\":    ahead X: string then lit X lit len type
     \ !! not recognized anywhere:      \ !! not recognized anywhere:
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     r@ @ decompile-prim ['] lit xt>threaded <> if rdrop false exit endif      r@ @ decompile-prim ['] lit xt>threaded <> if rdrop false exit endif
     r@ cell+ @ over cell+ <> if rdrop false exit endif      r@ cell+ @ over cell+ <> if rdrop false exit endif
     \ we have at least C"      \ we have at least C"
     r@ 2 cells + @ decompile-prim ['] lit xt>threaded = if      r@ 2 cells + @ decompile-prim dup ['] lit xt>threaded = if
         r@ 3 cells + @ over cell+ + aligned r@ = if          drop r@ 3 cells + @ over cell+ + aligned r@ = if
             \ we have at least s"              \ we have at least s"
             r@ 4 cells + @ decompile-prim ['] lit-perform xt>threaded =              r@ 4 cells + @ decompile-prim ['] lit-perform xt>threaded =
             r@ 5 cells + @ ['] type >body = and if              r@ 5 cells + @ ['] type >body = and if
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             nip cells r> + true exit              nip cells r> + true exit
         endif          endif
     endif      endif
       ['] f@ xt>threaded = if
           display? if
               r@ cell+ @ f@ 10 8 16 f>str-rdp 0 .string bl cemit
           endif
           drop r> 3 cells + true exit
       endif
     \ !! check if count matches space?      \ !! check if count matches space?
     display? if      display? if
         s\" c\" " 0 .string r@ cell+ @ count 0 .string '" cemit bl cemit          s\" c\" " 0 .string r@ cell+ @ count 0 .string '" cemit bl cemit
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                 THEN                  THEN
         THEN          THEN
         Debug?          Debug?
         IF      dup @ +          IF      @ \ !!! cross-interacts with debugger !!!
         ELSE    cell+          ELSE    cell+
         THEN ;          THEN ;
   
 : DebugBranch  : DebugBranch
         Debug?          Debug?
         IF      dup @ over + swap THEN ; \ return 2 different addresses          IF      dup @ swap THEN ; \ return 2 different addresses
   
 : c-?branch  : c-?branch
         Scan?          Scan?
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         Display? IF nl S" FOR" .struc level+ THEN ;          Display? IF nl S" FOR" .struc level+ THEN ;
   
 : c-loop  : c-loop
         Display? IF level- nl .name-without bl cemit nl THEN          Display? IF level- nl .name-without nl bl cemit THEN
         DebugBranch cell+          DebugBranch cell+
         Scan?          Scan?
         IF      dup BranchAddr?          IF      dup BranchAddr?
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     THEN      THEN
     DebugBranch cell+ ;      DebugBranch cell+ ;
   
 : c-exit  dup 1 cells -  : c-exit ( addr1 -- addr2 )
       dup 1 cells -
         CheckEnd          CheckEnd
         IF      Display? IF nlflag off S" ;" Com# .string THEN      IF
           Display? IF nlflag off S" ;" Com# .string THEN
                 C-Stop on                  C-Stop on
         ELSE    Display? IF S" EXIT " .struc THEN      ELSE
           Display? IF S" EXIT " .struc THEN
         THEN          THEN
         Debug? IF drop THEN ;      Debug? IF drop THEN ; \ !!! cross-interacts with debugger !!!
   
 : c-abort"  : c-abort"
         count 2dup + aligned -rot          count 2dup + aligned -rot
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     cell +loop      cell +loop
     here ;      here ;
   
   [ifundef] umin \ !! bootstrapping help
 : umin ( u1 u2 -- u )  : umin ( u1 u2 -- u )
     2dup u>      2dup u>
     if      if
         swap          swap
     then      then
     drop ;      drop ;
   [then]
   
 : next-prim ( addr1 -- addr2 ) \ gforth  : next-prim ( addr1 -- addr2 ) \ gforth
     \G find the next primitive after addr1 (unreliable)      \G find the next primitive after addr1 (unreliable)
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     >name ?dup-if      >name ?dup-if
         ." IS " .name cr          ." IS " .name cr
     else      else
         ." lastxt >body !"          ." latestxt >body !"
     then ;      then ;
 : see-threaded ( addr -- )  : see-threaded ( addr -- )
     C-Pass @ DebugMode = IF      C-Pass @ DebugMode = IF
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     dup >code-address      dup >code-address
     CASE      CASE
         docon: of seecon endof          docon: of seecon endof
   [IFDEF] dovalue:
           dovalue: of seevalue endof
   [THEN]
         docol: of seecol endof          docol: of seecol endof
         dovar: of seevar endof          dovar: of seevar endof
 [ [IFDEF] douser: ]  [IFDEF] douser:
         douser: of seeuser endof          douser: of seeuser endof
 [ [THEN] ]  [THEN]
 [ [IFDEF] dodefer: ]  [IFDEF] dodefer:
         dodefer: of seedefer endof          dodefer: of seedefer endof
 [ [THEN] ]  [THEN]
 [ [IFDEF] dofield: ]  [IFDEF] dofield:
         dofield: of seefield endof          dofield: of seefield endof
 [ [THEN] ]  [THEN]
         over       of seecode endof \ direct threaded code words          over       of seecode endof \ direct threaded code words
         over >body of seecode endof \ indirect threaded code words          over >body of seecode endof \ indirect threaded code words
         2drop abort" unknown word type"          2drop abort" unknown word type"
     ENDCASE ;      ENDCASE ;
   
 : (xt-see-xt) ( xt -- )  : (xt-see-xt) ( xt -- )
     xt-see cr ." lastxt" ;      xt-see cr ." latestxt" ;
 ' (xt-see-xt) is xt-see-xt  ' (xt-see-xt) is xt-see-xt
   
 : (.immediate) ( xt -- )  : (.immediate) ( xt -- )
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         else \ interpret/compile word          else \ interpret/compile word
             r@ xt-see-xt cr              r@ xt-see-xt cr
             swap xt-see-xt cr              swap xt-see-xt cr
             ." interpret/compile " over .name (.immediate)              ." interpret/compile: " over .name drop
         then          then
     then      then
     rdrop drop ;      rdrop drop ;

Generate output suitable for use with a patch program
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Removed from v.1.46  
changed lines
  Added in v.1.65
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