Annotation of gforth/prims2x.fs, revision 1.80

1.16      anton       1: \ converts primitives to, e.g., C code 
                      2: 
1.47      anton       3: \ Copyright (C) 1995,1996,1997,1998,2000 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
1.48      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.16      anton      20: 
                     21: 
1.71      anton      22: \ This is not very nice (hard limits, no checking, assumes 1 chars = 1).
                     23: \ And it grew even worse when it aged.
1.1       anton      24: 
                     25: \ Optimizations:
                     26: \ superfluous stores are removed. GCC removes the superfluous loads by itself
                     27: \ TOS and FTOS can be kept in register( variable)s.
                     28: \ 
                     29: \ Problems:
                     30: \ The TOS optimization is somewhat hairy. The problems by example:
                     31: \ 1) dup ( w -- w w ): w=TOS; sp-=1; sp[1]=w; TOS=w;
                     32: \    The store is not superfluous although the earlier opt. would think so
                     33: \    Alternatively:    sp[0]=TOS; w=TOS; sp-=1; TOS=w;
                     34: \ 2) ( -- .. ): sp[0] = TOS; ... /* This additional store is necessary */
                     35: \ 3) ( .. -- ): ... TOS = sp[0]; /* as well as this load */
                     36: \ 4) ( -- ): /* but here they are unnecessary */
                     37: \ 5) Words that call NEXT themselves have to be done very carefully.
                     38: \
                     39: \ To do:
1.8       pazsan     40: \ add the store optimization for doubles
1.1       anton      41: \ regarding problem 1 above: It would be better (for over) to implement
                     42: \      the alternative
1.80    ! anton      43: \ store optimization for combined instructions.
        !            44: \ eliminate stack-cast (no longer used)
        !            45: 
        !            46: \ Design Uglyness:
        !            47: 
        !            48: \ - global state (values, variables) in connection with combined instructions.
        !            49: 
        !            50: \ - index computation is different for instruction-stream and the
        !            51: \ stacks; there are two mechanisms for dealing with that
        !            52: \ (stack-in-index-xt and a test for stack==instruction-stream); there
        !            53: \ should be only one.
1.1       anton      54: 
1.3       pazsan     55: warnings off
                     56: 
1.39      jwilke     57: [IFUNDEF] vocabulary   \ we are executed just with kernel image
                     58:                        \ load the rest that is needed
                     59:                        \ (require fails because this file is needed from a
                     60:                        \ different directory with the wordlibraries)
                     61: include ./search.fs                    
                     62: include ./extend.fs
1.40      anton      63: [THEN]
1.76      pazsan     64: include ./stuff.fs
1.40      anton      65: 
                     66: [IFUNDEF] environment?
1.39      jwilke     67: include ./environ.fs
                     68: [THEN]
1.25      pazsan     69: 
1.49      anton      70: : struct% struct ; \ struct is redefined in gray
                     71: 
1.39      jwilke     72: include ./gray.fs
1.1       anton      73: 
1.69      anton      74: 32 constant max-effect \ number of things on one side of a stack effect
1.71      anton      75: 4 constant max-stacks  \ the max. number of stacks (including inst-stream).
1.1       anton      76: 255 constant maxchar
                     77: maxchar 1+ constant eof-char
1.17      anton      78: #tab constant tab-char
                     79: #lf constant nl-char
1.1       anton      80: 
1.18      anton      81: variable rawinput \ pointer to next character to be scanned
                     82: variable endrawinput \ pointer to the end of the input (the char after the last)
                     83: variable cookedinput \ pointer to the next char to be parsed
1.17      anton      84: variable line \ line number of char pointed to by input
1.65      anton      85: variable line-start \ pointer to start of current line (for error messages)
                     86: 0 line !
1.17      anton      87: 2variable filename \ filename of original input file
                     88: 0 0 filename 2!
1.25      pazsan     89: 2variable f-comment
                     90: 0 0 f-comment 2!
1.17      anton      91: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
                     92: skipsynclines on 
1.1       anton      93: 
1.72      anton      94: : th ( addr1 n -- addr2 )
                     95:     cells + ;
                     96: 
                     97: : holds ( addr u -- )
                     98:     \ like HOLD, but for a string
                     99:     tuck + swap 0 +do
                    100:        1- dup c@ hold
                    101:     loop
                    102:     drop ;
1.71      anton     103: 
1.1       anton     104: : start ( -- addr )
1.18      anton     105:  cookedinput @ ;
1.1       anton     106: 
                    107: : end ( addr -- addr u )
1.18      anton     108:  cookedinput @ over - ;
1.1       anton     109: 
1.71      anton     110: : print-error-line ( -- )
                    111:     \ print the current line and position
                    112:     line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )
                    113:     over - type cr
                    114:     line-start @ rawinput @ over - typewhite ." ^" cr ;
                    115: 
                    116: : ?print-error { f addr u -- }
                    117:     f ?not? if
                    118:        outfile-id >r try
                    119:            stderr to outfile-id
                    120:            filename 2@ type ." :" line @ 0 .r ." : " addr u type cr
                    121:            print-error-line
                    122:            0
                    123:        recover endtry
                    124:        r> to outfile-id throw
                    125:        abort
                    126:     endif ;
                    127: 
1.63      anton     128: : quote ( -- )
                    129:     [char] " emit ;
                    130: 
1.72      anton     131: variable output          \ xt ( -- ) of output word for simple primitives
                    132: variable output-combined \ xt ( -- ) of output word for combined primitives
1.1       anton     133: 
                    134: : printprim ( -- )
                    135:  output @ execute ;
                    136: 
1.49      anton     137: struct%
1.71      anton     138:     cell%    field stack-number \ the number of this stack
1.49      anton     139:     cell% 2* field stack-pointer \ stackpointer name
1.74      anton     140:     cell%    field stack-type \ name for default type of stack items
1.49      anton     141:     cell% 2* field stack-cast \ cast string for assignments to stack elements
1.53      anton     142:     cell%    field stack-in-index-xt \ ( in-size item -- in-index )
1.49      anton     143: end-struct stack%
                    144: 
1.53      anton     145: struct%
                    146:  cell% 2* field item-name   \ name, excluding stack prefixes
                    147:  cell%    field item-stack  \ descriptor for the stack used, 0 is default
                    148:  cell%    field item-type   \ descriptor for the item type
                    149:  cell%    field item-offset \ offset in stack items, 0 for the deepest element
1.66      anton     150:  cell%   field item-first  \ true if this is the first occurence of the item
1.53      anton     151: end-struct item%
                    152: 
                    153: struct%
                    154:     cell% 2* field type-c-name
                    155:     cell%    field type-stack \ default stack
                    156:     cell%    field type-size  \ size of type in stack items
                    157:     cell%    field type-fetch \ xt of fetch code generator ( item -- )
                    158:     cell%    field type-store \ xt of store code generator ( item -- )
                    159: end-struct type%
                    160: 
1.72      anton     161: variable next-stack-number 0 next-stack-number !
                    162: create stacks max-stacks cells allot \ array of stacks
                    163: 
1.53      anton     164: : stack-in-index ( in-size item -- in-index )
                    165:     item-offset @ - 1- ;
                    166: 
                    167: : inst-in-index ( in-size item -- in-index )
                    168:     nip dup item-offset @ swap item-type @ type-size @ + 1- ;
                    169: 
1.74      anton     170: : make-stack ( addr-ptr u1 type addr-cast u2 "stack-name" -- )
1.49      anton     171:     create stack% %allot >r
1.72      anton     172:     r@ stacks next-stack-number @ th !
1.71      anton     173:     next-stack-number @ r@ stack-number !  1 next-stack-number +!
1.49      anton     174:     save-mem r@ stack-cast 2!
1.74      anton     175:     r@ stack-type !
1.53      anton     176:     save-mem r@ stack-pointer 2! 
                    177:     ['] stack-in-index r> stack-in-index-xt ! ;
1.49      anton     178: 
                    179: \ stack items
                    180: 
                    181: : init-item ( addr u addr1 -- )
                    182:     \ initialize item at addr1 with name addr u
                    183:     \ !! remove stack prefix
                    184:     dup item% %size erase
                    185:     item-name 2! ;
                    186: 
1.64      anton     187: : map-items { addr end xt -- }
                    188:     \ perform xt for all items in array addr...end
                    189:     end addr ?do
                    190:        i xt execute
                    191:     item% %size +loop ;
                    192: 
1.77      anton     193: \ types
                    194: 
                    195: : print-type-prefix ( type -- )
                    196:     body> >head name>string type ;
                    197: 
1.49      anton     198: \ various variables for storing stuff of one primitive
1.1       anton     199: 
1.69      anton     200: struct%
                    201:     cell% 2* field prim-name
                    202:     cell% 2* field prim-wordset
                    203:     cell% 2* field prim-c-name
                    204:     cell% 2* field prim-doc
                    205:     cell% 2* field prim-c-code
                    206:     cell% 2* field prim-forth-code
                    207:     cell% 2* field prim-stack-string
1.75      anton     208:     cell%    field prim-items-wordlist \ unique items
1.69      anton     209:     item% max-effect * field prim-effect-in
                    210:     item% max-effect * field prim-effect-out
                    211:     cell%    field prim-effect-in-end
                    212:     cell%    field prim-effect-out-end
1.71      anton     213:     cell% max-stacks * field prim-stacks-in  \ number of in items per stack
                    214:     cell% max-stacks * field prim-stacks-out \ number of out items per stack
1.69      anton     215: end-struct prim%
                    216: 
1.70      anton     217: : make-prim ( -- prim )
                    218:     prim% %alloc { p }
                    219:     s" " p prim-doc 2! s" " p prim-forth-code 2! s" " p prim-wordset 2!
                    220:     p ;
                    221: 
1.79      anton     222: 0 value prim     \ in combined prims either combined or a part
                    223: 0 value combined \ in combined prims the combined prim
                    224: variable in-part \ true if processing a part
                    225:  in-part off
                    226: 
                    227: 1000 constant max-combined
                    228: create combined-prims max-combined cells allot
                    229: variable num-combined
                    230: 
                    231: create current-depth max-stacks cells allot
                    232: create max-depth     max-stacks cells allot
                    233: create min-depth     max-stacks cells allot
1.69      anton     234: 
1.71      anton     235: wordlist constant primitives
                    236: 
                    237: : create-prim ( prim -- )
                    238:     get-current >r
                    239:     primitives set-current
                    240:     dup prim-name 2@ nextname constant
                    241:     r> set-current ;
                    242: 
                    243: : stack-in ( stack -- addr )
                    244:     \ address of number of stack items in effect in
                    245:     stack-number @ cells prim prim-stacks-in + ;
                    246: 
                    247: : stack-out ( stack -- addr )
                    248:     \ address of number of stack items in effect out
                    249:     stack-number @ cells prim prim-stacks-out + ;
                    250: 
1.69      anton     251: \ global vars
1.17      anton     252: variable c-line
                    253: 2variable c-filename
                    254: variable name-line
                    255: 2variable name-filename
                    256: 2variable last-name-filename
1.30      pazsan    257: Variable function-number 0 function-number !
1.1       anton     258: 
                    259: \ a few more set ops
                    260: 
                    261: : bit-equivalent ( w1 w2 -- w3 )
                    262:  xor invert ;
                    263: 
                    264: : complement ( set1 -- set2 )
                    265:  empty ['] bit-equivalent binary-set-operation ;
                    266: 
1.80    ! anton     267: \ stack access stuff
1.79      anton     268: 
                    269: : normal-stack-access ( n stack -- )
1.49      anton     270:     stack-pointer 2@ type
                    271:     dup
                    272:     if
                    273:        ." [" 0 .r ." ]"
                    274:     else
                    275:        drop ." TOS"
                    276:     endif ;
1.1       anton     277: 
1.80    ! anton     278: \ forward declaration for inst-stream (breaks cycle in definitions)
        !           279: defer inst-stream-f ( -- stack )
        !           280: 
1.79      anton     281: : part-stack-access { n stack -- }
1.80    ! anton     282:     \ print _<stack><x>, x=inst-stream? n : maxdepth-currentdepth-n-1
1.79      anton     283:     ." _" stack stack-pointer 2@ type
                    284:     stack stack-number @ { stack# }
1.80    ! anton     285:     current-depth stack# th @ n + { access-depth }
        !           286:     stack inst-stream-f = if
        !           287:        access-depth
        !           288:     else
        !           289:        combined prim-stacks-in stack# th @
        !           290:        assert( dup max-depth stack# th @ = )
        !           291:        access-depth - 1-
        !           292:     endif
1.79      anton     293:     0 .r ;
                    294: 
                    295: : stack-access ( n stack -- )
                    296:     \ print a stack access at index n of stack
                    297:     in-part @ if
                    298:        part-stack-access
                    299:     else
                    300:        normal-stack-access
                    301:     endif ;
                    302: 
1.53      anton     303: : item-in-index { item -- n }
1.49      anton     304:     \ n is the index of item (in the in-effect)
1.53      anton     305:     item item-stack @ dup >r stack-in @ ( in-size r:stack )
                    306:     item r> stack-in-index-xt @ execute ;
1.1       anton     307: 
1.78      anton     308: : item-stack-type-name ( item -- addr u )
                    309:     item-stack @ stack-type @ type-c-name 2@ ;
                    310: 
1.1       anton     311: : fetch-single ( item -- )
1.49      anton     312:  \ fetch a single stack item from its stack
1.1       anton     313:  >r
1.8       pazsan    314:  r@ item-name 2@ type
1.78      anton     315:  ."  = vm_" r@ item-stack-type-name type
1.77      anton     316:  ." 2" r@ item-type @ print-type-prefix ." ("
1.49      anton     317:  r@ item-in-index r@ item-stack @ stack-access
1.77      anton     318:  ." );" cr
1.1       anton     319:  rdrop ; 
                    320: 
                    321: : fetch-double ( item -- )
1.49      anton     322:  \ fetch a double stack item from its stack
1.1       anton     323:  >r
1.78      anton     324:  ." vm_two"
                    325:  r@ item-stack-type-name type ." 2"
                    326:  r@ item-type @ print-type-prefix ." ("
1.20      anton     327:  r@ item-name 2@ type ." , "
1.61      anton     328:  r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
                    329:  ." , "                      -1 under+ ." (Cell)" stack-access
1.20      anton     330:  ." );" cr
1.1       anton     331:  rdrop ;
                    332: 
1.49      anton     333: : same-as-in? ( item -- f )
                    334:  \ f is true iff the offset and stack of item is the same as on input
1.1       anton     335:  >r
1.74      anton     336:  r@ item-first @ if
                    337:      rdrop false exit
                    338:  endif
1.75      anton     339:  r@ item-name 2@ prim prim-items-wordlist @ search-wordlist 0= abort" bug"
1.1       anton     340:  execute @
                    341:  dup r@ =
                    342:  if \ item first appeared in output
                    343:    drop false
                    344:  else
1.49      anton     345:    dup  item-stack  @ r@ item-stack  @ = 
                    346:    swap item-offset @ r@ item-offset @ = and
1.1       anton     347:  endif
                    348:  rdrop ;
                    349: 
1.49      anton     350: : item-out-index ( item -- n )
                    351:     \ n is the index of item (in the in-effect)
                    352:     >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
1.31      pazsan    353: 
1.1       anton     354: : really-store-single ( item -- )
                    355:  >r
1.77      anton     356:  r@ item-out-index r@ item-stack @ stack-access ."  = vm_"
                    357:  r@ item-type @ print-type-prefix ." 2"
1.78      anton     358:  r@ item-stack-type-name type ." ("
1.77      anton     359:  r@ item-name 2@ type ." );"
1.1       anton     360:  rdrop ;
                    361: 
                    362: : store-single ( item -- )
                    363:  >r
1.49      anton     364:  r@ same-as-in?
1.1       anton     365:  if
1.49      anton     366:    r@ item-in-index 0= r@ item-out-index 0= xor
1.1       anton     367:    if
1.49      anton     368:        ." IF_" r@ item-stack @ stack-pointer 2@ type
                    369:        ." TOS(" r@ really-store-single ." );" cr
1.1       anton     370:    endif
                    371:  else
                    372:    r@ really-store-single cr
                    373:  endif
                    374:  rdrop ;
                    375: 
                    376: : store-double ( item -- )
                    377: \ !! store optimization is not performed, because it is not yet needed
                    378:  >r
1.78      anton     379:  ." vm_"
                    380:  r@ item-type @ print-type-prefix ." 2two"
                    381:  r@ item-stack-type-name type ." ("
                    382:  r@ item-name 2@ type ." , "
1.49      anton     383:  r@ item-out-index r@ item-stack @ 2dup stack-access
                    384:  ." , "                       -1 under+ stack-access
1.20      anton     385:  ." );" cr
1.1       anton     386:  rdrop ;
                    387: 
1.54      anton     388: : single ( -- xt1 xt2 n )
                    389:     ['] fetch-single ['] store-single 1 ;
1.1       anton     390: 
1.54      anton     391: : double ( -- xt1 xt2 n )
                    392:     ['] fetch-double ['] store-double 2 ;
1.1       anton     393: 
                    394: : s, ( addr u -- )
                    395: \ allocate a string
                    396:  here swap dup allot move ;
                    397: 
1.50      anton     398: wordlist constant prefixes
                    399: 
                    400: : declare ( addr "name" -- )
                    401: \ remember that there is a stack item at addr called name
                    402:  create , ;
                    403: 
                    404: : !default ( w addr -- )
                    405:     dup @ if
                    406:        2drop \ leave nonzero alone
                    407:     else
                    408:        !
                    409:     endif ;
                    410: 
                    411: : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
1.49      anton     412:     \ describes a type
                    413:     \ addr u specifies the C type name
                    414:     \ stack effect entries of the type start with prefix
                    415:     create type% %allot >r
                    416:     addr u save-mem r@ type-c-name 2!
                    417:     xt1   r@ type-fetch !
                    418:     xt2   r@ type-store !
                    419:     n     r@ type-size !
                    420:     stack r@ type-stack !
                    421:     rdrop ;
1.1       anton     422: 
1.54      anton     423: : type-prefix ( xt1 xt2 n stack "prefix" -- )
1.50      anton     424:     create-type
                    425: does> ( item -- )
                    426:     \ initialize item
                    427:     { item typ }
                    428:     typ item item-type !
                    429:     typ type-stack @ item item-stack !default
1.75      anton     430:     item item-name 2@ prim prim-items-wordlist @ search-wordlist 0= if
1.66      anton     431:        item item-name 2@ nextname item declare
                    432:        item item-first on
                    433:        \ typ type-c-name 2@ type space type  ." ;" cr
1.50      anton     434:     else
                    435:        drop
1.66      anton     436:        item item-first off
1.50      anton     437:     endif ;
                    438: 
                    439: : execute-prefix ( item addr1 u1 -- )
                    440:     \ execute the word ( item -- ) associated with the longest prefix
                    441:     \ of addr1 u1
                    442:     0 swap ?do
                    443:        dup i prefixes search-wordlist
                    444:        if \ ok, we have the type ( item addr1 xt )
                    445:            nip execute
                    446:            UNLOOP EXIT
                    447:        endif
                    448:        -1 s+loop
                    449:     \ we did not find a type, abort
                    450:     true abort" unknown prefix" ;
1.1       anton     451: 
                    452: : declaration ( item -- )
1.50      anton     453:     dup item-name 2@ execute-prefix ;
1.1       anton     454: 
1.64      anton     455: : declaration-list ( addr1 addr2 -- )
                    456:     ['] declaration map-items ;
                    457: 
                    458: : declarations ( -- )
1.75      anton     459:  wordlist dup prim prim-items-wordlist ! set-current
1.69      anton     460:  prim prim-effect-in prim prim-effect-in-end @ declaration-list
                    461:  prim prim-effect-out prim prim-effect-out-end @ declaration-list ;
1.64      anton     462: 
1.66      anton     463: : print-declaration { item -- }
                    464:     item item-first @ if
                    465:        item item-type @ type-c-name 2@ type space
                    466:        item item-name 2@ type ." ;" cr
                    467:     endif ;
                    468: 
                    469: : print-declarations ( -- )
1.69      anton     470:     prim prim-effect-in  prim prim-effect-in-end  @ ['] print-declaration map-items
                    471:     prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
1.66      anton     472:     
1.51      anton     473: : stack-prefix ( stack "prefix" -- )
                    474:     name tuck nextname create ( stack length ) 2,
                    475: does> ( item -- )
                    476:     2@ { item stack prefix-length }
                    477:     item item-name 2@ prefix-length /string item item-name 2!
                    478:     stack item item-stack !
                    479:     item declaration ;
1.73      anton     480: 
1.74      anton     481: \ types pointed to by stacks for use in combined prims
                    482: s" Cell"  single 0 create-type cell-type
                    483: s" Float" single 0 create-type float-type
                    484: 
                    485: s" sp" save-mem cell-type  s" (Cell)" make-stack data-stack 
1.77      anton     486: s" fp" save-mem float-type s" "       make-stack fp-stack
                    487: s" rp" save-mem cell-type  s" (Cell)" make-stack return-stack
1.74      anton     488: s" IP" save-mem cell-type  s" error don't use # on results" make-stack inst-stream
1.73      anton     489: ' inst-in-index inst-stream stack-in-index-xt !
1.80    ! anton     490: ' inst-stream <is> inst-stream-f
1.73      anton     491: \ !! initialize stack-in and stack-out
1.1       anton     492: 
                    493: \ offset computation
                    494: \ the leftmost (i.e. deepest) item has offset 0
                    495: \ the rightmost item has the highest offset
                    496: 
1.49      anton     497: : compute-offset { item xt -- }
                    498:     \ xt specifies in/out; update stack-in/out and set item-offset
                    499:     item item-type @ type-size @
                    500:     item item-stack @ xt execute dup @ >r +!
                    501:     r> item item-offset ! ;
                    502: 
1.64      anton     503: : compute-offset-in ( addr1 addr2 -- )
                    504:     ['] stack-in compute-offset ;
                    505: 
                    506: : compute-offset-out ( addr1 addr2 -- )
                    507:     ['] stack-out compute-offset ;
1.49      anton     508: 
                    509: : clear-stack { -- }
                    510:     dup stack-in off stack-out off ;
1.1       anton     511: 
                    512: : compute-offsets ( -- )
1.51      anton     513:     data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
1.53      anton     514:     inst-stream clear-stack
1.69      anton     515:     prim prim-effect-in  prim prim-effect-in-end  @ ['] compute-offset-in  map-items
                    516:     prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
1.53      anton     517:     inst-stream stack-out @ 0<> abort" # can only be on the input side" ;
1.49      anton     518: 
                    519: : flush-a-tos { stack -- }
                    520:     stack stack-out @ 0<> stack stack-in @ 0= and
                    521:     if
                    522:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    523:        2dup type ." [0] = " type ." TOS);" cr
                    524:     endif ;
1.1       anton     525: 
                    526: : flush-tos ( -- )
1.51      anton     527:     data-stack   flush-a-tos
                    528:     fp-stack     flush-a-tos
                    529:     return-stack flush-a-tos ;
1.49      anton     530: 
                    531: : fill-a-tos { stack -- }
                    532:     stack stack-out @ 0= stack stack-in @ 0<> and
                    533:     if
                    534:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    535:        2dup type ." TOS = " type ." [0]);" cr
                    536:     endif ;
1.1       anton     537: 
                    538: : fill-tos ( -- )
1.53      anton     539:     \ !! inst-stream for prefetching?
1.51      anton     540:     fp-stack     fill-a-tos
                    541:     data-stack   fill-a-tos
                    542:     return-stack fill-a-tos ;
1.49      anton     543: 
                    544: : fetch ( addr -- )
1.72      anton     545:     dup item-type @ type-fetch @ execute ;
1.1       anton     546: 
                    547: : fetches ( -- )
1.69      anton     548:     prim prim-effect-in prim prim-effect-in-end @ ['] fetch map-items ;
1.49      anton     549: 
                    550: : stack-pointer-update { stack -- }
                    551:     \ stack grow downwards
                    552:     stack stack-in @ stack stack-out @ -
                    553:     ?dup-if \ this check is not necessary, gcc would do this for us
                    554:        stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
                    555:     endif ;
1.1       anton     556: 
1.55      anton     557: : inst-pointer-update ( -- )
                    558:     inst-stream stack-in @ ?dup-if
                    559:        ." INC_IP(" 0 .r ." );" cr
                    560:     endif ;
                    561: 
1.1       anton     562: : stack-pointer-updates ( -- )
1.55      anton     563:     inst-pointer-update
1.51      anton     564:     data-stack   stack-pointer-update
                    565:     fp-stack     stack-pointer-update
                    566:     return-stack stack-pointer-update ;
1.1       anton     567: 
                    568: : store ( item -- )
                    569: \ f is true if the item should be stored
                    570: \ f is false if the store is probably not necessary
1.49      anton     571:  dup item-type @ type-store @ execute ;
1.1       anton     572: 
                    573: : stores ( -- )
1.69      anton     574:     prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
1.8       pazsan    575: 
1.52      anton     576: : output-c-tail ( -- )
                    577:     \ the final part of the generated C code
                    578:     ." NEXT_P1;" cr
                    579:     stores
                    580:     fill-tos
                    581:     ." NEXT_P2;" cr ;
                    582: 
                    583: : type-c ( c-addr u -- )
                    584:     \ like TYPE, but replaces "TAIL;" with tail code
                    585:     begin ( c-addr1 u1 )
                    586:        2dup s" TAIL;" search
                    587:     while ( c-addr1 u1 c-addr3 u3 )
                    588:        2dup 2>r drop nip over - type
                    589:        output-c-tail
                    590:        2r> 5 /string
                    591:        \ !! resync #line missing
                    592:     repeat
                    593:     2drop type ;
1.63      anton     594: 
                    595: : print-debug-arg { item -- }
                    596:     ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
                    597:     ." printarg_" item item-type @ print-type-prefix
                    598:     ." (" item item-name 2@ type ." );" cr ;
                    599:     
                    600: : print-debug-args ( -- )
                    601:     ." #ifdef VM_DEBUG" cr
                    602:     ." if (vm_debug) {" cr
1.69      anton     603:     prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
1.63      anton     604:     ." fputc('\n', vm_out);" cr
                    605:     ." }" cr
                    606:     ." #endif" cr ;
1.72      anton     607: 
                    608: : print-entry ( -- )
                    609:     ." I_" prim prim-c-name 2@ type ." :" ;
1.63      anton     610:     
1.43      jwilke    611: : output-c ( -- ) 
1.72      anton     612:  print-entry ."  /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
1.69      anton     613:  ." /* " prim prim-doc 2@ type ."  */" cr
                    614:  ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
1.1       anton     615:  ." {" cr
                    616:  ." DEF_CA" cr
1.66      anton     617:  print-declarations
1.13      anton     618:  ." NEXT_P0;" cr
                    619:  flush-tos
1.1       anton     620:  fetches
1.63      anton     621:  print-debug-args
1.13      anton     622:  stack-pointer-updates
1.1       anton     623:  ." {" cr
1.63      anton     624:  ." #line " c-line @ . quote c-filename 2@ type quote cr
1.69      anton     625:  prim prim-c-code 2@ type-c
1.1       anton     626:  ." }" cr
1.52      anton     627:  output-c-tail
1.1       anton     628:  ." }" cr
                    629:  cr
                    630: ;
                    631: 
1.56      anton     632: : disasm-arg { item -- }
                    633:     item item-stack @ inst-stream = if
1.63      anton     634:        ."   fputc(' ', vm_out); "
                    635:        ." printarg_" item item-type @ print-type-prefix
                    636:        ." ((" item item-type @ type-c-name 2@ type ." )"
                    637:        ." ip[" item item-offset @ 1+ 0 .r ." ]);" cr
1.56      anton     638:     endif ;
                    639: 
                    640: : disasm-args ( -- )
1.69      anton     641:     prim prim-effect-in prim prim-effect-in-end @ ['] disasm-arg map-items ;
1.56      anton     642: 
                    643: : output-disasm ( -- )
                    644:     \ generate code for disassembling VM instructions
                    645:     ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
1.69      anton     646:     ."   fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
1.56      anton     647:     disasm-args
                    648:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
1.68      anton     649:     ." } else " ;
1.56      anton     650: 
1.60      anton     651: : gen-arg-parm { item -- }
                    652:     item item-stack @ inst-stream = if
                    653:        ." , " item item-type @ type-c-name 2@ type space
                    654:        item item-name 2@ type
                    655:     endif ;
                    656: 
                    657: : gen-args-parm ( -- )
1.69      anton     658:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-parm map-items ;
1.60      anton     659: 
                    660: : gen-arg-gen { item -- }
                    661:     item item-stack @ inst-stream = if
                    662:        ."   genarg_" item item-type @ print-type-prefix
                    663:         ." (ctp, " item item-name 2@ type ." );" cr
                    664:     endif ;
                    665: 
                    666: : gen-args-gen ( -- )
1.69      anton     667:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-gen map-items ;
1.60      anton     668: 
                    669: : output-gen ( -- )
                    670:     \ generate C code for generating VM instructions
1.69      anton     671:     ." void gen_" prim prim-c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
1.60      anton     672:     ." {" cr
                    673:     ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
                    674:     gen-args-gen
1.68      anton     675:     ." }" cr ;
1.60      anton     676: 
1.49      anton     677: : stack-used? { stack -- f }
                    678:     stack stack-in @ stack stack-out @ or 0<> ;
1.44      jwilke    679: 
1.30      pazsan    680: : output-funclabel ( -- )
1.69      anton     681:   ." &I_" prim prim-c-name 2@ type ." ," cr ;
1.30      pazsan    682: 
                    683: : output-forthname ( -- )
1.69      anton     684:   '" emit prim prim-name 2@ type '" emit ." ," cr ;
1.30      pazsan    685: 
                    686: : output-c-func ( -- )
1.44      jwilke    687: \ used for word libraries
1.69      anton     688:     ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
                    689:     ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
                    690:     ." /* " prim prim-doc 2@ type ."  */" cr
                    691:     ." NAME(" quote prim prim-name 2@ type quote ." )" cr
1.30      pazsan    692:     \ debugging
                    693:     ." {" cr
1.66      anton     694:     print-declarations
1.53      anton     695:     inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
1.51      anton     696:     data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
                    697:     fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
                    698:     return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
1.30      pazsan    699:     flush-tos
                    700:     fetches
                    701:     stack-pointer-updates
1.49      anton     702:     fp-stack   stack-used? IF ." *FP=fp;" cr THEN
1.30      pazsan    703:     ." {" cr
1.63      anton     704:     ." #line " c-line @ . quote c-filename 2@ type quote cr
1.69      anton     705:     prim prim-c-code 2@ type
1.30      pazsan    706:     ." }" cr
                    707:     stores
                    708:     fill-tos
1.44      jwilke    709:     ." return (sp);" cr
1.30      pazsan    710:     ." }" cr
                    711:     cr ;
                    712: 
1.43      jwilke    713: : output-label ( -- )  
1.69      anton     714:     ." (Label)&&I_" prim prim-c-name 2@ type ." ," cr ;
1.1       anton     715: 
1.43      jwilke    716: : output-alias ( -- ) 
1.69      anton     717:     ( primitive-number @ . ." alias " ) ." Primitive " prim prim-name 2@ type cr ;
1.1       anton     718: 
1.43      jwilke    719: : output-forth ( -- )  
1.69      anton     720:     prim prim-forth-code @ 0=
1.30      pazsan    721:     IF         \ output-alias
1.28      jwilke    722:        \ this is bad for ec: an alias is compiled if tho word does not exist!
                    723:        \ JAW
1.69      anton     724:     ELSE  ." : " prim prim-name 2@ type ."   ( "
                    725:        prim prim-stack-string 2@ type ." )" cr
                    726:        prim prim-forth-code 2@ type cr
1.30      pazsan    727:     THEN ;
1.10      anton     728: 
1.17      anton     729: : output-tag-file ( -- )
                    730:     name-filename 2@ last-name-filename 2@ compare if
                    731:        name-filename 2@ last-name-filename 2!
                    732:        #ff emit cr
                    733:        name-filename 2@ type
                    734:        ." ,0" cr
                    735:     endif ;
                    736: 
                    737: : output-tag ( -- )
                    738:     output-tag-file
1.69      anton     739:     prim prim-name 2@ 1+ type
1.17      anton     740:     127 emit
1.69      anton     741:     space prim prim-name 2@ type space
1.17      anton     742:     1 emit
                    743:     name-line @ 0 .r
                    744:     ." ,0" cr ;
                    745: 
1.10      anton     746: [IFDEF] documentation
                    747: : register-doc ( -- )
                    748:     get-current documentation set-current
1.69      anton     749:     prim prim-name 2@ nextname create
                    750:     prim prim-name 2@ 2,
                    751:     prim prim-stack-string 2@ condition-stack-effect 2,
                    752:     prim prim-wordset 2@ 2,
                    753:     prim prim-c-name 2@ condition-pronounciation 2,
                    754:     prim prim-doc 2@ 2,
1.10      anton     755:     set-current ;
                    756: [THEN]
1.67      anton     757: 
                    758: 
1.69      anton     759: \ combining instructions
                    760: 
                    761: \ The input should look like this:
                    762: 
                    763: \ lit_+ = lit +
                    764: 
                    765: \ The output should look like this:
                    766: 
                    767: \  I_lit_+:
                    768: \  {
                    769: \  DEF_CA
                    770: \  Cell _x_ip0;
                    771: \  Cell _x_sp0;
                    772: \  Cell _x_sp1;
                    773: \  NEXT_P0;
                    774: \  _x_ip0 = (Cell) IPTOS;
                    775: \  _x_sp0 = (Cell) spTOS;
                    776: \  INC_IP(1);
                    777: \  /* sp += 0; */
                    778: \  /* lit ( #w -- w ) */
                    779: \  /*  */
                    780: \  NAME("lit")
                    781: \  {
                    782: \  Cell w;
                    783: \  w = (Cell) _x_ip0;
                    784: \  #ifdef VM_DEBUG
                    785: \  if (vm_debug) {
                    786: \  fputs(" w=", vm_out); printarg_w (w);
                    787: \  fputc('\n', vm_out);
                    788: \  }
                    789: \  #endif
                    790: \  {
                    791: \  #line 136 "./prim"
                    792: \  }
                    793: \  _x_sp1 = (Cell)w;
                    794: \  }
                    795: \  I_plus:     /* + ( n1 n2 -- n ) */
                    796: \  /*  */
                    797: \  NAME("+")
                    798: \  {
                    799: \  DEF_CA
                    800: \  Cell n1;
                    801: \  Cell n2;
                    802: \  Cell n;
                    803: \  NEXT_P0;
                    804: \  n1 = (Cell) _x_sp0;
                    805: \  n2 = (Cell) _x_sp1;
                    806: \  #ifdef VM_DEBUG
                    807: \  if (vm_debug) {
                    808: \  fputs(" n1=", vm_out); printarg_n (n1);
                    809: \  fputs(" n2=", vm_out); printarg_n (n2);
                    810: \  fputc('\n', vm_out);
                    811: \  }
                    812: \  #endif
                    813: \  {
                    814: \  #line 516 "./prim"
                    815: \  n = n1+n2;
                    816: \  }
                    817: \  NEXT_P1;
                    818: \  _x_sp0 = (Cell)n;
                    819: \  NEXT_P2;
                    820: \  }
                    821: \  NEXT_P1;
                    822: \  spTOS = (Cell)_x_sp0;
                    823: \  NEXT_P2;
                    824: 
1.71      anton     825: : init-combined ( -- )
1.79      anton     826:     prim to combined
1.71      anton     827:     0 num-combined !
                    828:     current-depth max-stacks cells erase
1.72      anton     829:     max-depth     max-stacks cells erase
                    830:     min-depth     max-stacks cells erase
                    831:     prim prim-effect-in  prim prim-effect-in-end  !
                    832:     prim prim-effect-out prim prim-effect-out-end ! ;
1.71      anton     833: 
                    834: : max! ( n addr -- )
                    835:     tuck @ max swap ! ;
                    836: 
1.72      anton     837: : min! ( n addr -- )
                    838:     tuck @ min swap ! ;
                    839: 
1.71      anton     840: : add-depths { p -- }
                    841:     \ combine stack effect of p with *-depths
                    842:     max-stacks 0 ?do
1.72      anton     843:        current-depth i th @
                    844:        p prim-stacks-in  i th @ +
                    845:        dup max-depth i th max!
                    846:        p prim-stacks-out i th @ -
                    847:        dup min-depth i th min!
                    848:        current-depth i th !
1.71      anton     849:     loop ;
                    850: 
                    851: : add-prim ( addr u -- )
                    852:     \ add primitive given by "addr u" to combined-prims
                    853:     primitives search-wordlist s" unknown primitive" ?print-error
                    854:     execute { p }
1.72      anton     855:     p combined-prims num-combined @ th !
1.71      anton     856:     1 num-combined +!
                    857:     p add-depths ;
                    858: 
                    859: : compute-effects { q -- }
                    860:     \ compute the stack effects of q from the depths
                    861:     max-stacks 0 ?do
1.72      anton     862:        max-depth i th @ dup
                    863:        q prim-stacks-in i th !
                    864:        current-depth i th @ -
                    865:        q prim-stacks-out i th !
                    866:     loop ;
                    867: 
                    868: : make-effect-items { stack# items effect-endp -- }
                    869:     \ effect-endp points to a pointer to the end of the current item-array
                    870:     \ and has to be updated
                    871:     stacks stack# th @ { stack }
                    872:     items 0 +do
                    873:        effect-endp @ { item }
                    874:        i 0 <# #s stack stack-pointer 2@ holds [char] _ hold #> save-mem
                    875:        item item-name 2!
                    876:        stack item item-stack !
1.74      anton     877:        stack stack-type @ item item-type !
1.72      anton     878:        i item item-offset !
                    879:        item item-first on
                    880:        item% %size effect-endp +!
                    881:     loop ;
                    882: 
                    883: : init-effects { q -- }
                    884:     \ initialize effects field for FETCHES and STORES
                    885:     max-stacks 0 ?do
                    886:        i q prim-stacks-in  i th @ q prim-effect-in-end  make-effect-items
                    887:        i q prim-stacks-out i th @ q prim-effect-out-end make-effect-items
1.71      anton     888:     loop ;
                    889: 
                    890: : process-combined ( -- )
1.72      anton     891:     prim compute-effects
                    892:     prim init-effects
                    893:     output-combined perform ;
                    894: 
                    895: \ C output
                    896: 
                    897: : print-item { n stack -- }
                    898:     \ print nth stack item name
1.79      anton     899:     stack stack-type @ type-c-name 2@ type space
                    900:     ." _" stack stack-pointer 2@ type n 0 .r ;
1.72      anton     901: 
                    902: : print-declarations-combined ( -- )
                    903:     max-stacks 0 ?do
                    904:        max-depth i th @ min-depth i th @ - 0 +do
                    905:            i stacks j th @ print-item ." ;" cr
                    906:        loop
                    907:     loop ;
1.79      anton     908: 
                    909: : part-fetches ( -- )
                    910:     fetches ;
                    911: 
                    912: : part-output-c-tail ( -- )
                    913:     output-c-tail ;
                    914: 
                    915: : output-part ( p -- )
                    916:     to prim
                    917:     ." /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
                    918:     ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
                    919:     ." {" cr
                    920:     print-declarations
                    921:     part-fetches
                    922:     print-debug-args
                    923:     prim add-depths \ !! right place?
                    924:     ." {" cr
                    925:     ." #line " c-line @ . quote c-filename 2@ type quote cr
                    926:     prim prim-c-code 2@ type-c \ !! deal with TAIL
                    927:     ." }" cr
                    928:     part-output-c-tail
                    929:     ." }" cr ;
                    930: 
1.74      anton     931: : output-parts ( -- )
1.79      anton     932:     prim >r in-part on
                    933:     current-depth max-stacks cells erase
1.74      anton     934:     num-combined @ 0 +do
1.79      anton     935:        combined-prims i th @ output-part
1.74      anton     936:     loop
1.79      anton     937:     in-part off
1.74      anton     938:     r> to prim ;
                    939: 
1.72      anton     940: : output-c-combined ( -- )
                    941:     print-entry cr
1.74      anton     942:     \ debugging messages just in parts
1.72      anton     943:     ." {" cr
                    944:     ." DEF_CA" cr
                    945:     print-declarations-combined
                    946:     ." NEXT_P0;" cr
                    947:     flush-tos
                    948:     fetches
1.74      anton     949:     \ print-debug-args
                    950:     stack-pointer-updates
                    951:     output-parts
                    952:     output-c-tail
                    953:     ." }" cr
                    954:     cr ;
1.72      anton     955: 
                    956: : output-forth-combined ( -- )
                    957:     ;
1.69      anton     958: 
1.67      anton     959: \ the parser
                    960: 
                    961: eof-char max-member \ the whole character set + EOF
                    962: 
                    963: : getinput ( -- n )
                    964:  rawinput @ endrawinput @ =
                    965:  if
                    966:    eof-char
                    967:  else
                    968:    cookedinput @ c@
                    969:  endif ;
                    970: 
                    971: :noname ( n -- )
                    972:  dup bl > if
                    973:   emit space
                    974:  else
                    975:   .
                    976:  endif ;
                    977: print-token !
                    978: 
                    979: : testchar? ( set -- f )
                    980:  getinput member? ;
                    981: ' testchar? test-vector !
                    982: 
                    983: : checksyncline ( -- )
                    984:     \ when input points to a newline, check if the next line is a
                    985:     \ sync line.  If it is, perform the appropriate actions.
                    986:     rawinput @ >r
                    987:     s" #line " r@ over compare 0<> if
                    988:        rdrop 1 line +! EXIT
                    989:     endif
                    990:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
                    991:     dup c@ bl = if
                    992:        char+ dup c@ [char] " <> abort" sync line syntax"
                    993:        char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
                    994:        char+
                    995:     endif
                    996:     dup c@ nl-char <> abort" sync line syntax"
                    997:     skipsynclines @ if
                    998:        dup char+ rawinput !
                    999:        rawinput @ c@ cookedinput @ c!
                   1000:     endif
                   1001:     drop ;
                   1002: 
                   1003: : ?nextchar ( f -- )
1.71      anton    1004:     s" syntax error, wrong char" ?print-error
1.67      anton    1005:     rawinput @ endrawinput @ <> if
                   1006:        rawinput @ c@
                   1007:        1 chars rawinput +!
                   1008:        1 chars cookedinput +!
                   1009:        nl-char = if
                   1010:            checksyncline
                   1011:            rawinput @ line-start !
                   1012:        endif
                   1013:        rawinput @ c@ cookedinput @ c!
                   1014:     endif ;
                   1015: 
                   1016: : charclass ( set "name" -- )
                   1017:  ['] ?nextchar terminal ;
                   1018: 
                   1019: : .. ( c1 c2 -- set )
                   1020:  ( creates a set that includes the characters c, c1<=c<=c2 )
                   1021:  empty copy-set
                   1022:  swap 1+ rot do
                   1023:   i over add-member
                   1024:  loop ;
                   1025: 
                   1026: : ` ( -- terminal ) ( use: ` c )
                   1027:  ( creates anonymous terminal for the character c )
                   1028:  char singleton ['] ?nextchar make-terminal ;
                   1029: 
                   1030: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
                   1031: char 0 char 9 ..                                       charclass digit
                   1032: bl singleton tab-char over add-member                  charclass white
                   1033: nl-char singleton eof-char over add-member complement  charclass nonl
                   1034: nl-char singleton eof-char over add-member
                   1035:     char : over add-member complement                   charclass nocolonnl
                   1036: bl 1+ maxchar .. char \ singleton complement intersection
                   1037:                                                         charclass nowhitebq
                   1038: bl 1+ maxchar ..                                        charclass nowhite
                   1039: char " singleton eof-char over add-member complement   charclass noquote
                   1040: nl-char singleton                                      charclass nl
                   1041: eof-char singleton                                     charclass eof
1.79      anton    1042: nl-char singleton eof-char over add-member             charclass nleof
1.67      anton    1043: 
                   1044: (( letter (( letter || digit )) **
                   1045: )) <- c-ident ( -- )
                   1046: 
                   1047: (( ` # ?? (( letter || digit || ` : )) **
                   1048: )) <- stack-ident ( -- )
                   1049: 
                   1050: (( nowhitebq nowhite ** ))
                   1051: <- forth-ident ( -- )
                   1052: 
                   1053: Variable forth-flag
                   1054: Variable c-flag
                   1055: 
                   1056: (( (( ` e || ` E )) {{ start }} nonl ** 
                   1057:    {{ end evaluate }}
                   1058: )) <- eval-comment ( ... -- ... )
                   1059: 
                   1060: (( (( ` f || ` F )) {{ start }} nonl ** 
                   1061:    {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
                   1062: )) <- forth-comment ( -- )
                   1063: 
                   1064: (( (( ` c || ` C )) {{ start }} nonl ** 
                   1065:    {{ end c-flag @ IF type cr ELSE 2drop THEN }}
                   1066: )) <- c-comment ( -- )
                   1067: 
                   1068: (( ` - nonl ** {{ 
                   1069:        forth-flag @ IF ." [ELSE]" cr THEN
                   1070:        c-flag @ IF ." #else" cr THEN }}
                   1071: )) <- else-comment
                   1072: 
                   1073: (( ` + {{ start }} nonl ** {{ end
                   1074:        dup
                   1075:        IF      c-flag @
                   1076:                IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
                   1077:                THEN
                   1078:                forth-flag @
                   1079:                IF  ." has? " type ."  [IF]"  cr THEN
                   1080:        ELSE    2drop
                   1081:            c-flag @      IF  ." #endif"  cr THEN
                   1082:            forth-flag @  IF  ." [THEN]"  cr THEN
                   1083:        THEN }}
                   1084: )) <- if-comment
                   1085: 
                   1086: (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
                   1087: 
1.79      anton    1088: (( ` \ comment-body nleof )) <- comment ( -- )
1.67      anton    1089: 
                   1090: (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
                   1091: <- stack-items
                   1092: 
1.69      anton    1093: (( {{ prim prim-effect-in }}  stack-items {{ prim prim-effect-in-end ! }}
1.67      anton    1094:    ` - ` - white **
1.69      anton    1095:    {{ prim prim-effect-out }} stack-items {{ prim prim-effect-out-end ! }}
1.67      anton    1096: )) <- stack-effect ( -- )
                   1097: 
1.71      anton    1098: (( {{ prim create-prim }}
1.69      anton    1099:    ` ( white ** {{ start }} stack-effect {{ end prim prim-stack-string 2! }} ` ) white **
                   1100:    (( {{ start }} forth-ident {{ end prim prim-wordset 2! }} white **
                   1101:       (( {{ start }}  c-ident {{ end prim prim-c-name 2! }} )) ??
1.79      anton    1102:    )) ??  nleof
                   1103:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- prim prim-doc 2! }} ` " white ** nleof )) ??
                   1104:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nleof white ** )) ** {{ end prim prim-c-code 2! skipsynclines on }}
                   1105:    (( ` :  white ** nleof
                   1106:       {{ start }} (( nonl ++  nleof white ** )) ++ {{ end prim prim-forth-code 2! }}
1.68      anton    1107:    )) ?? {{  declarations compute-offsets printprim 1 function-number +! }}
1.79      anton    1108:    nleof
1.69      anton    1109: )) <- simple-primitive ( -- )
                   1110: 
1.71      anton    1111: (( {{ init-combined }}
                   1112:    ` = (( white ++ {{ start }} forth-ident {{ end add-prim }} )) ++
1.79      anton    1113:    nleof {{ process-combined }}
1.69      anton    1114: )) <- combined-primitive
                   1115: 
1.79      anton    1116: (( {{ make-prim to prim 0 to combined
1.69      anton    1117:       line @ name-line ! filename 2@ name-filename 2!
                   1118:       start }} forth-ident {{ end 2dup prim prim-name 2! prim prim-c-name 2! }}  white ++
                   1119:    (( simple-primitive || combined-primitive ))
1.67      anton    1120: )) <- primitive ( -- )
                   1121: 
                   1122: (( (( comment || primitive || nl white ** )) ** eof ))
                   1123: parser primitives2something
                   1124: warnings @ [IF]
                   1125: .( parser generated ok ) cr
                   1126: [THEN]
                   1127: 
1.69      anton    1128: : primfilter ( addr u -- )
                   1129:     \ process the string at addr u
                   1130:     over dup rawinput ! dup line-start ! cookedinput !
                   1131:     + endrawinput !
                   1132:     checksyncline
                   1133:     primitives2something ;    
1.8       pazsan   1134: 
1.72      anton    1135: : process-file ( addr u xt-simple x-combined -- )
                   1136:     output-combined ! output !
1.61      anton    1137:     save-mem 2dup filename 2!
1.69      anton    1138:     slurp-file
1.17      anton    1139:     warnings @ if
                   1140:        ." ------------ CUT HERE -------------" cr  endif
1.69      anton    1141:     primfilter ;
1.30      pazsan   1142: 
1.72      anton    1143: \  : process      ( xt -- )
                   1144: \      bl word count rot
                   1145: \      process-file ;

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