Annotation of gforth/prims2x.fs, revision 1.35

1.16      anton       1: \ converts primitives to, e.g., C code 
                      2: 
1.35    ! anton       3: \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
1.16      anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
                      9: \ as published by the Free Software Foundation; either version 2
                     10: \ of the License, or (at your option) any later version.
                     11: 
                     12: \ This program is distributed in the hope that it will be useful,
                     13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: \ GNU General Public License for more details.
                     16: 
                     17: \ You should have received a copy of the GNU General Public License
                     18: \ along with this program; if not, write to the Free Software
                     19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     20: 
                     21: 
1.1       anton      22: \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)
                     23: 
                     24: \ Optimizations:
                     25: \ superfluous stores are removed. GCC removes the superfluous loads by itself
                     26: \ TOS and FTOS can be kept in register( variable)s.
                     27: \ 
                     28: \ Problems:
                     29: \ The TOS optimization is somewhat hairy. The problems by example:
                     30: \ 1) dup ( w -- w w ): w=TOS; sp-=1; sp[1]=w; TOS=w;
                     31: \    The store is not superfluous although the earlier opt. would think so
                     32: \    Alternatively:    sp[0]=TOS; w=TOS; sp-=1; TOS=w;
                     33: \ 2) ( -- .. ): sp[0] = TOS; ... /* This additional store is necessary */
                     34: \ 3) ( .. -- ): ... TOS = sp[0]; /* as well as this load */
                     35: \ 4) ( -- ): /* but here they are unnecessary */
                     36: \ 5) Words that call NEXT themselves have to be done very carefully.
                     37: \
                     38: \ To do:
1.8       pazsan     39: \ add the store optimization for doubles
1.1       anton      40: \ regarding problem 1 above: It would be better (for over) to implement
                     41: \      the alternative
                     42: 
1.3       pazsan     43: warnings off
                     44: 
1.32      pazsan     45: require search.fs
                     46: require extend.fs
1.25      pazsan     47: 
1.24      anton      48: \ require interpretation.fs
1.27      anton      49: \ require debugs.fs
                     50: [IFUNDEF] vocabulary    include search.fs [THEN]
1.11      pazsan     51: [IFUNDEF] environment?  include environ.fs      [THEN]
1.1       anton      52: include gray.fs
                     53: 
                     54: 100 constant max-effect \ number of things on one side of a stack effect
                     55: 255 constant maxchar
                     56: maxchar 1+ constant eof-char
1.17      anton      57: #tab constant tab-char
                     58: #lf constant nl-char
1.1       anton      59: 
                     60: : read-whole-file ( c-addr1 file-id -- c-addr2 )
                     61: \ reads the contents of the file file-id puts it into memory at c-addr1
                     62: \ c-addr2 is the first address after the file block
1.23      anton      63:   >r dup $7fffffff r> read-file throw + ;
1.1       anton      64: 
1.18      anton      65: variable rawinput \ pointer to next character to be scanned
                     66: variable endrawinput \ pointer to the end of the input (the char after the last)
                     67: variable cookedinput \ pointer to the next char to be parsed
1.17      anton      68: variable line \ line number of char pointed to by input
                     69: 1 line !
                     70: 2variable filename \ filename of original input file
                     71: 0 0 filename 2!
1.25      pazsan     72: 2variable f-comment
                     73: 0 0 f-comment 2!
1.17      anton      74: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
                     75: skipsynclines on 
1.1       anton      76: 
1.26      pazsan     77: Variable flush-comment flush-comment off
                     78: 
                     79: : ?flush-comment
1.34      pazsan     80:     flush-comment @ 0= ?EXIT
                     81:     f-comment 2@ nip
                     82:     IF  cr f-comment 2@ 2 /string 1-
                     83:        dup IF
                     84:            flush-comment @ 1 =
                     85:            IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP
                     86:            ELSE  ." has? " type ."  [IF]"  THEN  cr
                     87:        ELSE    flush-comment @ 1 = IF  ." #endif"  ELSE  ." [THEN]"  THEN
                     88:            cr  THEN
                     89:        0 0 f-comment 2! THEN ;
1.26      pazsan     90: 
1.1       anton      91: : start ( -- addr )
1.18      anton      92:  cookedinput @ ;
1.1       anton      93: 
                     94: : end ( addr -- addr u )
1.18      anton      95:  cookedinput @ over - ;
1.1       anton      96: 
                     97: variable output \ xt ( -- ) of output word
                     98: 
                     99: : printprim ( -- )
                    100:  output @ execute ;
                    101: 
                    102: : field
                    103:  <builds-field ( n1 n2 -- n3 )
                    104:  does>         ( addr1 -- addr2 )
                    105:    @ + ;
                    106: 
                    107: : const-field
                    108:  <builds-field ( n1 n2 -- n3 )
                    109:  does>         ( addr -- w )
                    110:    @ + @ ;
                    111: 
                    112: struct
                    113:  2 cells field item-name
                    114:  cell field item-d-offset
                    115:  cell field item-f-offset
                    116:  cell field item-type
                    117: constant item-descr
                    118: 
                    119: 2variable forth-name
                    120: 2variable wordset
                    121: 2variable c-name
                    122: 2variable doc
                    123: 2variable c-code
                    124: 2variable forth-code
                    125: 2variable stack-string
                    126: create effect-in  max-effect item-descr * allot
                    127: create effect-out max-effect item-descr * allot
                    128: variable effect-in-end ( pointer )
                    129: variable effect-out-end ( pointer )
                    130: 2variable effect-in-size
                    131: 2variable effect-out-size
1.17      anton     132: variable c-line
                    133: 2variable c-filename
                    134: variable name-line
                    135: 2variable name-filename
                    136: 2variable last-name-filename
1.1       anton     137: 
1.14      pazsan    138: variable primitive-number -10 primitive-number !
1.30      pazsan    139: Variable function-number 0 function-number !
1.1       anton     140: 
                    141: \ for several reasons stack items of a word are stored in a wordlist
                    142: \ since neither forget nor marker are implemented yet, we make a new
                    143: \ wordlist for every word and store it in the variable items
                    144: variable items
                    145: 
                    146: \ a few more set ops
                    147: 
                    148: : bit-equivalent ( w1 w2 -- w3 )
                    149:  xor invert ;
                    150: 
                    151: : complement ( set1 -- set2 )
                    152:  empty ['] bit-equivalent binary-set-operation ;
                    153: 
                    154: \ the parser
                    155: 
                    156: eof-char max-member \ the whole character set + EOF
                    157: 
                    158: : getinput ( -- n )
1.18      anton     159:  rawinput @ endrawinput @ =
1.1       anton     160:  if
1.18      anton     161:    eof-char
1.1       anton     162:  else
1.18      anton     163:    cookedinput @ c@
1.1       anton     164:  endif ;
                    165: 
                    166: :noname ( n -- )
                    167:  dup bl > if
                    168:   emit space
                    169:  else
                    170:   .
                    171:  endif ;
                    172: print-token !
                    173: 
                    174: : testchar? ( set -- f )
                    175:  getinput member? ;
                    176: ' testchar? test-vector !
                    177: 
1.17      anton     178: : checksyncline ( -- )
                    179:     \ when input points to a newline, check if the next line is a
                    180:     \ sync line.  If it is, perform the appropriate actions.
1.18      anton     181:     rawinput @ >r
1.17      anton     182:     s" #line " r@ over compare 0<> if
                    183:        rdrop 1 line +! EXIT
                    184:     endif
                    185:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
                    186:     dup c@ bl = if
                    187:        char+ dup c@ [char] " <> abort" sync line syntax"
1.24      anton     188:        char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
1.17      anton     189:        char+
                    190:     endif
                    191:     dup c@ nl-char <> abort" sync line syntax"
                    192:     skipsynclines @ if
1.18      anton     193:        dup char+ rawinput !
                    194:        rawinput @ c@ cookedinput @ c!
1.17      anton     195:     endif
                    196:     drop ;
                    197: 
1.1       anton     198: : ?nextchar ( f -- )
1.17      anton     199:     ?not? if
1.18      anton     200:        filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
1.17      anton     201:        getinput . cr
1.18      anton     202:        rawinput @ endrawinput @ over - 100 min type cr
1.17      anton     203:        abort
                    204:     endif
1.18      anton     205:     rawinput @ endrawinput @ <> if
                    206:        rawinput @ c@
                    207:        1 chars rawinput +!
                    208:        1 chars cookedinput +!
1.17      anton     209:        nl-char = if
                    210:            checksyncline
                    211:        endif
1.18      anton     212:        rawinput @ c@ cookedinput @ c!
1.17      anton     213:     endif ;
1.1       anton     214: 
                    215: : charclass ( set "name" -- )
                    216:  ['] ?nextchar terminal ;
                    217: 
                    218: : .. ( c1 c2 -- set )
                    219:  ( creates a set that includes the characters c, c1<=c<=c2 )
                    220:  empty copy-set
                    221:  swap 1+ rot do
                    222:   i over add-member
                    223:  loop ;
                    224: 
                    225: : ` ( -- terminal ) ( use: ` c )
                    226:  ( creates anonymous terminal for the character c )
1.21      anton     227:  char singleton ['] ?nextchar make-terminal ;
1.1       anton     228: 
                    229: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
                    230: char 0 char 9 ..                                       charclass digit
                    231: bl singleton                                           charclass blank
                    232: tab-char singleton                                     charclass tab
                    233: nl-char singleton eof-char over add-member complement  charclass nonl
                    234: nl-char singleton eof-char over add-member char : over add-member complement  charclass nocolonnl
                    235: bl 1+ maxchar ..                                       charclass nowhite
                    236: char " singleton eof-char over add-member complement   charclass noquote
                    237: nl-char singleton                                      charclass nl
                    238: eof-char singleton                                     charclass eof
                    239: 
                    240: 
                    241: (( letter (( letter || digit )) **
                    242: )) <- c-name ( -- )
                    243: 
                    244: nowhite ++
                    245: <- name ( -- )
                    246: 
1.26      pazsan    247: (( {{ ?flush-comment start }} ` \ nonl ** nl {{ end
1.25      pazsan    248:       2dup 2 min s" \+" compare 0= IF  f-comment 2!  ELSE  2drop  THEN }}
1.1       anton     249: )) <- comment ( -- )
                    250: 
                    251: (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-in-end ! }}
                    252:    ` - ` - blank **
                    253:    {{ effect-out }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-out-end ! }}
                    254: )) <- stack-effect ( -- )
                    255: 
                    256: (( {{ s" " doc 2! s" " forth-code 2! }}
                    257:    (( comment || nl )) **
1.17      anton     258:    (( {{ line @ name-line ! filename 2@ name-filename 2! }}
                    259:       {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  tab ++
1.1       anton     260:       {{ start }} stack-effect {{ end stack-string 2! }} tab ++
                    261:         {{ start }} name {{ end wordset 2! }} tab **
                    262:         (( {{ start }}  c-name {{ end c-name 2! }} )) ??  nl
                    263:    ))
                    264:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??
1.18      anton     265:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! skipsynclines on }}
1.1       anton     266:    (( ` :  nl
                    267:       {{ start }} (( nonl ++  nl )) ++ {{ end forth-code 2! }}
                    268:    )) ??
                    269:    (( nl || eof ))
                    270: )) <- primitive ( -- )
                    271: 
                    272: (( (( primitive {{ printprim }} )) **  eof ))
                    273: parser primitives2something
1.3       pazsan    274: warnings @ [IF]
1.1       anton     275: .( parser generated ok ) cr
1.3       pazsan    276: [THEN]
1.1       anton     277: 
                    278: : primfilter ( file-id xt -- )
                    279: \ fileid is for the input file, xt ( -- ) is for the output word
                    280:  output !
1.18      anton     281:  here dup rawinput ! cookedinput !
1.1       anton     282:  here swap read-whole-file
1.18      anton     283:  dup endrawinput !
1.1       anton     284:  here - allot
1.2       pazsan    285:  align
1.17      anton     286:  checksyncline
1.18      anton     287: \ begin
                    288: \     getinput dup eof-char = ?EXIT emit true ?nextchar
                    289: \ again ;
1.1       anton     290:  primitives2something ;
                    291: 
                    292: \ types
                    293: 
                    294: struct
                    295:  2 cells field type-c-name
                    296:  cell const-field type-d-size
                    297:  cell const-field type-f-size
                    298:  cell const-field type-fetch-handler
                    299:  cell const-field type-store-handler
                    300: constant type-description
                    301: 
                    302: : data-stack-access ( n1 n2 n3 -- )
                    303: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
                    304:  drop swap - 1- dup
                    305:  if
1.2       pazsan    306:    ." sp[" 0 .r ." ]"
1.1       anton     307:  else
                    308:    drop ." TOS"
                    309:  endif ;
                    310: 
                    311: : fp-stack-access ( n1 n2 n3 -- )
                    312: \ n1 is the offset of the accessed item, n2, n3 are effect-*-size
                    313:  nip swap - 1- dup
                    314:  if
1.2       pazsan    315:    ." fp[" 0 .r ." ]"
1.1       anton     316:  else
                    317:    drop ." FTOS"
                    318:  endif ;
                    319: 
                    320: : fetch-single ( item -- )
                    321:  >r
1.8       pazsan    322:  r@ item-name 2@ type
                    323:  ."  = (" 
1.1       anton     324:  r@ item-type @ type-c-name 2@ type ." ) "
                    325:  r@ item-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr
                    326:  rdrop ; 
                    327: 
                    328: : fetch-double ( item -- )
                    329:  >r
1.20      anton     330:  ." FETCH_DCELL("
                    331:  r@ item-name 2@ type ." , "
1.1       anton     332:  r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access
1.20      anton     333:  ." , "                        1+ effect-in-size 2@ data-stack-access
                    334:  ." );" cr
1.1       anton     335:  rdrop ;
                    336: 
                    337: : fetch-float ( item -- )
                    338:  >r
1.8       pazsan    339:  r@ item-name 2@ type
                    340:  ."  = "
1.1       anton     341:  \ ." (" r@ item-type @ type-c-name 2@ type ." ) "
                    342:  r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr
                    343:  rdrop ;
                    344: 
                    345: : d-same-as-in? ( item -- f )
                    346: \ f is true iff the offset of item is the same as on input
                    347:  >r
                    348:  r@ item-name 2@ items @ search-wordlist 0=
1.8       pazsan    349:  abort" bug"
1.1       anton     350:  execute @
                    351:  dup r@ =
                    352:  if \ item first appeared in output
                    353:    drop false
                    354:  else
                    355:    item-d-offset @ r@ item-d-offset @ =
                    356:  endif
                    357:  rdrop ;
                    358: 
                    359: : is-in-tos? ( item -- f )
                    360: \ true if item has the same offset as the input TOS
                    361:  item-d-offset @ 1+ effect-in-size 2@ drop = ;
                    362: 
1.31      pazsan    363: : is-out-tos? ( item -- f )
                    364: \ true if item has the same offset as the input TOS
                    365:  item-d-offset @ 1+ effect-out-size 2@ drop = ;
                    366: 
1.1       anton     367: : really-store-single ( item -- )
                    368:  >r
                    369:  r@ item-d-offset @ effect-out-size 2@ data-stack-access ."  = (Cell)"
                    370:  r@ item-name 2@ type ." ;"
                    371:  rdrop ;
                    372: 
                    373: : store-single ( item -- )
                    374:  >r
                    375:  r@ d-same-as-in?
                    376:  if
1.31      pazsan    377:    r@ is-in-tos? r@ is-out-tos? xor
1.1       anton     378:    if
                    379:      ." IF_TOS(" r@ really-store-single ." );" cr
                    380:    endif
                    381:  else
                    382:    r@ really-store-single cr
                    383:  endif
                    384:  rdrop ;
                    385: 
                    386: : store-double ( item -- )
                    387: \ !! store optimization is not performed, because it is not yet needed
                    388:  >r
1.20      anton     389:  ." STORE_DCELL(" r@ item-name 2@ type ." , "
                    390:  r@ item-d-offset @ dup    effect-out-size 2@ data-stack-access
                    391:  ." , "                        1+ effect-out-size 2@ data-stack-access
                    392:  ." );" cr
1.1       anton     393:  rdrop ;
                    394: 
                    395: : f-same-as-in? ( item -- f )
                    396: \ f is true iff the offset of item is the same as on input
                    397:  >r
                    398:  r@ item-name 2@ items @ search-wordlist 0=
1.8       pazsan    399:  abort" bug"
1.1       anton     400:  execute @
                    401:  dup r@ =
                    402:  if \ item first appeared in output
                    403:    drop false
                    404:  else
                    405:    item-f-offset @ r@ item-f-offset @ =
                    406:  endif
                    407:  rdrop ;
                    408: 
                    409: : is-in-ftos? ( item -- f )
                    410: \ true if item has the same offset as the input TOS
                    411:  item-f-offset @ 1+ effect-in-size 2@ nip = ;
                    412: 
                    413: : really-store-float ( item -- )
                    414:  >r
                    415:  r@ item-f-offset @ effect-out-size 2@ fp-stack-access ."  = "
                    416:  r@ item-name 2@ type ." ;"
                    417:  rdrop ;
                    418: 
                    419: : store-float ( item -- )
                    420:  >r
                    421:  r@ f-same-as-in?
                    422:  if
                    423:    r@ is-in-ftos?
                    424:    if
                    425:      ." IF_FTOS(" r@ really-store-float ." );" cr
                    426:    endif
                    427:  else
                    428:    r@ really-store-float cr
                    429:  endif
                    430:  rdrop ;
                    431:  
1.10      anton     432: : single-type ( -- xt1 xt2 n1 n2 )
1.1       anton     433:  ['] fetch-single ['] store-single 1 0 ;
                    434: 
1.10      anton     435: : double-type ( -- xt1 xt2 n1 n2 )
1.1       anton     436:  ['] fetch-double ['] store-double 2 0 ;
                    437: 
1.10      anton     438: : float-type ( -- xt1 xt2 n1 n2 )
1.1       anton     439:  ['] fetch-float ['] store-float 0 1 ;
                    440: 
                    441: : s, ( addr u -- )
                    442: \ allocate a string
                    443:  here swap dup allot move ;
                    444: 
                    445: : starts-with ( addr u xt1 xt2 n1 n2 "prefix" -- )
                    446: \ describes a type
                    447: \ addr u specifies the C type name
                    448: \ n1 is the size of the type on the data stack
                    449: \ n2 is the size of the type on the FP stack
                    450: \ stack effect entries of the type start with prefix
                    451:  >r >r >r >r
                    452:  dup >r here >r s,
                    453:  create
                    454:  r> r> 2,
                    455:  r> r> r> , r> , swap , , ;
                    456: 
                    457: wordlist constant types
                    458: get-current
                    459: types set-current
                    460: 
                    461: s" Bool"       single-type starts-with f
                    462: s" Char"       single-type starts-with c
                    463: s" Cell"       single-type starts-with n
                    464: s" Cell"       single-type starts-with w
                    465: s" UCell"      single-type starts-with u
                    466: s" DCell"      double-type starts-with d
                    467: s" UDCell"     double-type starts-with ud
                    468: s" Float"      float-type  starts-with r
                    469: s" Cell *"     single-type starts-with a_
                    470: s" Char *"     single-type starts-with c_
                    471: s" Float *"    single-type starts-with f_
                    472: s" DFloat *"   single-type starts-with df_
                    473: s" SFloat *"   single-type starts-with sf_
                    474: s" Xt"         single-type starts-with xt
                    475: s" WID"                single-type starts-with wid
1.33      pazsan    476: s" struct F83Name *"   single-type starts-with f83name
1.1       anton     477: 
                    478: set-current
                    479: 
                    480: : get-type ( addr1 u1 -- type-descr )
                    481: \ get the type of the name in addr1 u1
                    482: \ type-descr is a pointer to a type-descriptor
                    483:  0 swap ?do
                    484:    dup i types search-wordlist
                    485:    if \ ok, we have the type ( addr1 xt )
                    486:      execute nip
                    487:      UNLOOP EXIT
                    488:    endif
1.9       anton     489:  -1 s+loop
1.1       anton     490:  \ we did not find a type, abort
1.8       pazsan    491:  true abort" unknown type prefix" ;
1.1       anton     492: 
                    493: : declare ( addr "name" -- )
                    494: \ remember that there is a stack item at addr called name
                    495:  create , ;
                    496: 
                    497: : declaration ( item -- )
                    498:  dup item-name 2@ items @ search-wordlist
                    499:  if \ already declared ( item xt )
                    500:    execute @ item-type @ swap item-type !
                    501:  else ( addr )
                    502:    dup item-name 2@ nextname dup declare ( addr )
                    503:    dup >r item-name 2@ 2dup get-type ( addr1 u type-descr )
                    504:    dup r> item-type ! ( addr1 u type-descr )
                    505:    type-c-name 2@ type space type ." ;" cr
                    506:  endif ;
                    507: 
                    508: : declaration-list ( addr1 addr2 -- )
                    509:  swap ?do
                    510:   i declaration
                    511:  item-descr +loop ;
                    512: 
1.8       pazsan    513: : fetch ( addr -- )
                    514:  dup item-type @ type-fetch-handler execute ;
                    515: 
1.1       anton     516: : declarations ( -- )
                    517:  wordlist dup items ! set-current
                    518:  effect-in effect-in-end @ declaration-list
                    519:  effect-out effect-out-end @ declaration-list ;
                    520: 
                    521: \ offset computation
                    522: \ the leftmost (i.e. deepest) item has offset 0
                    523: \ the rightmost item has the highest offset
                    524: 
                    525: : compute-offset ( n1 n2 item -- n3 n4 )
                    526: \ n1, n3 are data-stack-offsets
                    527: \ n2, n4 are the fp-stack-offsets
                    528:  >r
                    529:  swap dup r@ item-d-offset !
                    530:  r@ item-type @ type-d-size +
                    531:  swap dup r@ item-f-offset !
                    532:  r@ item-type @ type-f-size +
                    533:  rdrop ;
                    534: 
                    535: : compute-list ( addr1 addr2 -- n1 n2 )
                    536: \ n1, n2 are the final offsets
                    537:  0 0 2swap swap ?do
                    538:   i compute-offset
                    539:  item-descr +loop ;
                    540: 
                    541: : compute-offsets ( -- )
                    542:  effect-in effect-in-end @ compute-list effect-in-size 2!
                    543:  effect-out effect-out-end @ compute-list effect-out-size 2! ;
                    544: 
                    545: : flush-tos ( -- )
                    546:  effect-in-size 2@ effect-out-size 2@
                    547:  0<> rot 0= and
                    548:  if
1.13      anton     549:    ." IF_FTOS(fp[0] = FTOS);" cr
                    550:  endif
1.1       anton     551:  0<> swap 0= and
                    552:  if
1.13      anton     553:    ." IF_TOS(sp[0] = TOS);" cr
                    554:  endif ;
1.1       anton     555: 
                    556: : fill-tos ( -- )
                    557:  effect-in-size 2@ effect-out-size 2@
                    558:  0= rot 0<> and
                    559:  if
                    560:    ." IF_FTOS(FTOS = fp[0]);" cr
                    561:  endif
                    562:  0= swap 0<> and
                    563:  if
                    564:    ." IF_TOS(TOS = sp[0]);" cr
                    565:  endif ;
                    566: 
                    567: : fetches ( -- )
                    568:  effect-in-end @ effect-in ?do
                    569:    i fetch
                    570:  item-descr +loop ; 
                    571: 
                    572: : stack-pointer-updates ( -- )
1.8       pazsan    573: \ we need not check if an update is a noop; gcc does this for us
1.1       anton     574:  effect-in-size 2@
                    575:  effect-out-size 2@
                    576:  rot swap - ( d-in d-out f-diff )
                    577:  rot rot - ( f-diff d-diff )
1.2       pazsan    578:  ?dup IF  ." sp += " 0 .r ." ;" cr  THEN
                    579:  ?dup IF  ." fp += " 0 .r ." ;" cr  THEN ;
1.1       anton     580: 
                    581: : store ( item -- )
                    582: \ f is true if the item should be stored
                    583: \ f is false if the store is probably not necessary
                    584:  dup item-type @ type-store-handler execute ;
                    585: 
                    586: : stores ( -- )
                    587:  effect-out-end @ effect-out ?do
                    588:    i store
                    589:  item-descr +loop ; 
                    590: 
1.8       pazsan    591: : .stack-list ( start end -- )
                    592:  swap ?do
                    593:    i item-name 2@ type space
                    594:  item-descr +loop ; 
                    595: 
1.34      pazsan    596: : output-c ( -- ) 1 flush-comment !
                    597:     ?flush-comment
1.2       pazsan    598:  ." I_" c-name 2@ type ." :    /* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr
1.1       anton     599:  ." /* " doc 2@ type ."  */" cr
1.13      anton     600:  ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
1.1       anton     601:  ." {" cr
                    602:  ." DEF_CA" cr
                    603:  declarations
                    604:  compute-offsets \ for everything else
1.13      anton     605:  ." NEXT_P0;" cr
                    606:  flush-tos
1.1       anton     607:  fetches
1.13      anton     608:  stack-pointer-updates
1.1       anton     609:  ." {" cr
1.17      anton     610:  ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
1.1       anton     611:  c-code 2@ type
                    612:  ." }" cr
                    613:  ." NEXT_P1;" cr
                    614:  stores
                    615:  fill-tos
1.9       anton     616:  ." NEXT_P2;" cr
1.1       anton     617:  ." }" cr
                    618:  cr
                    619: ;
                    620: 
1.30      pazsan    621: : output-funclabel ( -- )
                    622:   1 function-number +!
                    623:   ." &I_" c-name 2@ type ." ," cr ;
                    624: 
                    625: : output-forthname ( -- )
                    626:   1 function-number +!
                    627:   '" emit forth-name 2@ type '" emit ." ," cr ;
                    628: 
                    629: : output-c-func ( -- )
                    630:     1 function-number +!
                    631:     ." void I_" c-name 2@ type ." ()      /* " forth-name 2@ type
                    632:     ."  ( " stack-string 2@ type ."  ) */" cr
                    633:     ." /* " doc 2@ type ."  */" cr
                    634:     ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr
                    635:     \ debugging
                    636:     ." {" cr
                    637:     ." DEF_CA" cr
                    638:     declarations
                    639:     compute-offsets \ for everything else
                    640:     ." NEXT_P0;" cr
                    641:     flush-tos
                    642:     fetches
                    643:     stack-pointer-updates
                    644:     ." {" cr
                    645:     ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
                    646:     c-code 2@ type
                    647:     ." }" cr
                    648:     ." NEXT_P1;" cr
                    649:     stores
                    650:     fill-tos
                    651:     ." NEXT_P2;" cr
                    652:     ." }" cr
                    653:     cr ;
                    654: 
1.34      pazsan    655: : output-label ( -- )  1 flush-comment !
                    656:     ?flush-comment
                    657:     ." [" -2 primitive-number @ - 0 .r ." ] "
                    658:     ." (Label)&&I_" c-name 2@ type ." ," cr
                    659:     -1 primitive-number +! ;
1.1       anton     660: 
1.26      pazsan    661: : output-alias ( -- )  flush-comment on
1.34      pazsan    662:     ?flush-comment
                    663:     primitive-number @ . ." alias " forth-name 2@ type cr
                    664:     -1 primitive-number +! ;
1.1       anton     665: 
1.26      pazsan    666: : output-forth ( -- )  flush-comment on
1.30      pazsan    667:     ?flush-comment
                    668:     forth-code @ 0=
                    669:     IF         \ output-alias
1.28      jwilke    670:        \ this is bad for ec: an alias is compiled if tho word does not exist!
                    671:        \ JAW
1.30      pazsan    672:     ELSE  ." : " forth-name 2@ type ."   ( "
                    673:        effect-in effect-in-end @ .stack-list ." -- "
                    674:        effect-out effect-out-end @ .stack-list ." )" cr
                    675:        forth-code 2@ type cr
                    676:        -1 primitive-number +!
                    677:     THEN ;
1.10      anton     678: 
1.17      anton     679: : output-tag-file ( -- )
                    680:     name-filename 2@ last-name-filename 2@ compare if
                    681:        name-filename 2@ last-name-filename 2!
                    682:        #ff emit cr
                    683:        name-filename 2@ type
                    684:        ." ,0" cr
                    685:     endif ;
                    686: 
                    687: : output-tag ( -- )
                    688:     output-tag-file
                    689:     forth-name 2@ 1+ type
                    690:     127 emit
                    691:     space forth-name 2@ type space
                    692:     1 emit
                    693:     name-line @ 0 .r
                    694:     ." ,0" cr ;
                    695: 
1.10      anton     696: [IFDEF] documentation
                    697: : register-doc ( -- )
                    698:     get-current documentation set-current
                    699:     forth-name 2@ nextname create
                    700:     forth-name 2@ 2,
1.15      anton     701:     stack-string 2@ condition-stack-effect 2,
1.10      anton     702:     wordset 2@ 2,
1.15      anton     703:     c-name 2@ condition-pronounciation 2,
1.10      anton     704:     doc 2@ 2,
                    705:     set-current ;
                    706: [THEN]
1.8       pazsan    707: 
1.1       anton     708: : process-file ( addr u xt -- )
1.17      anton     709:     >r
                    710:     2dup filename 2!
1.30      pazsan    711:     0 function-number !
1.17      anton     712:     r/o open-file abort" cannot open file"
                    713:     warnings @ if
                    714:        ." ------------ CUT HERE -------------" cr  endif
                    715:     r> primfilter ;
1.30      pazsan    716: 
                    717: : process      ( xt -- )
                    718:     bl word count rot
                    719:     process-file ;
1.5       pazsan    720: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>