Annotation of gforth/prims2x.fs, revision 1.92

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: 
                     45: \ Design Uglyness:
                     46: 
                     47: \ - global state (values, variables) in connection with combined instructions.
                     48: 
                     49: \ - index computation is different for instruction-stream and the
                     50: \ stacks; there are two mechanisms for dealing with that
                     51: \ (stack-in-index-xt and a test for stack==instruction-stream); there
                     52: \ should be only one.
1.1       anton      53: 
1.3       pazsan     54: warnings off
                     55: 
1.39      jwilke     56: [IFUNDEF] vocabulary   \ we are executed just with kernel image
                     57:                        \ load the rest that is needed
                     58:                        \ (require fails because this file is needed from a
                     59:                        \ different directory with the wordlibraries)
                     60: include ./search.fs                    
                     61: include ./extend.fs
1.88      anton      62: include ./stuff.fs
1.40      anton      63: [THEN]
                     64: 
                     65: [IFUNDEF] environment?
1.39      jwilke     66: include ./environ.fs
                     67: [THEN]
1.25      pazsan     68: 
1.49      anton      69: : struct% struct ; \ struct is redefined in gray
                     70: 
1.39      jwilke     71: include ./gray.fs
1.1       anton      72: 
1.69      anton      73: 32 constant max-effect \ number of things on one side of a stack effect
1.71      anton      74: 4 constant max-stacks  \ the max. number of stacks (including inst-stream).
1.1       anton      75: 255 constant maxchar
                     76: maxchar 1+ constant eof-char
1.17      anton      77: #tab constant tab-char
                     78: #lf constant nl-char
1.1       anton      79: 
1.18      anton      80: variable rawinput \ pointer to next character to be scanned
                     81: variable endrawinput \ pointer to the end of the input (the char after the last)
                     82: variable cookedinput \ pointer to the next char to be parsed
1.17      anton      83: variable line \ line number of char pointed to by input
1.65      anton      84: variable line-start \ pointer to start of current line (for error messages)
                     85: 0 line !
1.17      anton      86: 2variable filename \ filename of original input file
                     87: 0 0 filename 2!
1.25      pazsan     88: 2variable f-comment
                     89: 0 0 f-comment 2!
1.17      anton      90: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
                     91: skipsynclines on 
1.1       anton      92: 
1.72      anton      93: : th ( addr1 n -- addr2 )
                     94:     cells + ;
                     95: 
                     96: : holds ( addr u -- )
                     97:     \ like HOLD, but for a string
                     98:     tuck + swap 0 +do
                     99:        1- dup c@ hold
                    100:     loop
                    101:     drop ;
1.71      anton     102: 
1.82      anton     103: : insert-wordlist { c-addr u wordlist xt -- }
1.81      anton     104:     \ adds name "addr u" to wordlist using defining word xt
                    105:     \ xt may cause additional stack effects
                    106:     get-current >r wordlist set-current
                    107:     c-addr u nextname xt execute
                    108:     r> set-current ;
                    109: 
1.1       anton     110: : start ( -- addr )
1.18      anton     111:  cookedinput @ ;
1.1       anton     112: 
                    113: : end ( addr -- addr u )
1.18      anton     114:  cookedinput @ over - ;
1.1       anton     115: 
1.71      anton     116: : print-error-line ( -- )
                    117:     \ print the current line and position
                    118:     line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )
                    119:     over - type cr
                    120:     line-start @ rawinput @ over - typewhite ." ^" cr ;
                    121: 
                    122: : ?print-error { f addr u -- }
                    123:     f ?not? if
                    124:        outfile-id >r try
                    125:            stderr to outfile-id
                    126:            filename 2@ type ." :" line @ 0 .r ." : " addr u type cr
                    127:            print-error-line
                    128:            0
                    129:        recover endtry
                    130:        r> to outfile-id throw
                    131:        abort
                    132:     endif ;
                    133: 
1.63      anton     134: : quote ( -- )
                    135:     [char] " emit ;
                    136: 
1.72      anton     137: variable output          \ xt ( -- ) of output word for simple primitives
                    138: variable output-combined \ xt ( -- ) of output word for combined primitives
1.1       anton     139: 
1.49      anton     140: struct%
1.71      anton     141:     cell%    field stack-number \ the number of this stack
1.49      anton     142:     cell% 2* field stack-pointer \ stackpointer name
1.74      anton     143:     cell%    field stack-type \ name for default type of stack items
1.53      anton     144:     cell%    field stack-in-index-xt \ ( in-size item -- in-index )
1.49      anton     145: end-struct stack%
                    146: 
1.53      anton     147: struct%
                    148:  cell% 2* field item-name   \ name, excluding stack prefixes
                    149:  cell%    field item-stack  \ descriptor for the stack used, 0 is default
                    150:  cell%    field item-type   \ descriptor for the item type
                    151:  cell%    field item-offset \ offset in stack items, 0 for the deepest element
1.66      anton     152:  cell%   field item-first  \ true if this is the first occurence of the item
1.53      anton     153: end-struct item%
                    154: 
                    155: struct%
                    156:     cell% 2* field type-c-name
                    157:     cell%    field type-stack \ default stack
                    158:     cell%    field type-size  \ size of type in stack items
                    159:     cell%    field type-fetch \ xt of fetch code generator ( item -- )
                    160:     cell%    field type-store \ xt of store code generator ( item -- )
                    161: end-struct type%
                    162: 
1.72      anton     163: variable next-stack-number 0 next-stack-number !
                    164: create stacks max-stacks cells allot \ array of stacks
                    165: 
1.53      anton     166: : stack-in-index ( in-size item -- in-index )
                    167:     item-offset @ - 1- ;
                    168: 
                    169: : inst-in-index ( in-size item -- in-index )
                    170:     nip dup item-offset @ swap item-type @ type-size @ + 1- ;
                    171: 
1.92    ! anton     172: : make-stack ( addr-ptr u1 type "stack-name" -- )
        !           173:     next-stack-number @ max-stacks < s" too many stacks" ?print-error
1.49      anton     174:     create stack% %allot >r
1.72      anton     175:     r@ stacks next-stack-number @ th !
1.92    ! anton     176:     next-stack-number @ r@ stack-number !
        !           177:     1 next-stack-number +!
1.74      anton     178:     r@ stack-type !
1.53      anton     179:     save-mem r@ stack-pointer 2! 
                    180:     ['] stack-in-index r> stack-in-index-xt ! ;
1.49      anton     181: 
1.92    ! anton     182: : map-stacks { xt -- }
        !           183:     \ perform xt for all stacks except inst-stream
        !           184:     next-stack-number @ 1 +do
        !           185:        stacks i th @ xt execute
        !           186:     loop ;
        !           187: 
1.49      anton     188: \ stack items
                    189: 
                    190: : init-item ( addr u addr1 -- )
                    191:     \ initialize item at addr1 with name addr u
                    192:     \ !! remove stack prefix
                    193:     dup item% %size erase
                    194:     item-name 2! ;
                    195: 
1.64      anton     196: : map-items { addr end xt -- }
                    197:     \ perform xt for all items in array addr...end
                    198:     end addr ?do
                    199:        i xt execute
                    200:     item% %size +loop ;
                    201: 
1.77      anton     202: \ types
                    203: 
                    204: : print-type-prefix ( type -- )
                    205:     body> >head name>string type ;
                    206: 
1.49      anton     207: \ various variables for storing stuff of one primitive
1.1       anton     208: 
1.69      anton     209: struct%
                    210:     cell% 2* field prim-name
                    211:     cell% 2* field prim-wordset
                    212:     cell% 2* field prim-c-name
                    213:     cell% 2* field prim-doc
                    214:     cell% 2* field prim-c-code
                    215:     cell% 2* field prim-forth-code
                    216:     cell% 2* field prim-stack-string
1.82      anton     217:     cell%    field prim-num            \ ordinal number
1.75      anton     218:     cell%    field prim-items-wordlist \ unique items
1.69      anton     219:     item% max-effect * field prim-effect-in
                    220:     item% max-effect * field prim-effect-out
                    221:     cell%    field prim-effect-in-end
                    222:     cell%    field prim-effect-out-end
1.71      anton     223:     cell% max-stacks * field prim-stacks-in  \ number of in items per stack
                    224:     cell% max-stacks * field prim-stacks-out \ number of out items per stack
1.69      anton     225: end-struct prim%
                    226: 
1.70      anton     227: : make-prim ( -- prim )
                    228:     prim% %alloc { p }
                    229:     s" " p prim-doc 2! s" " p prim-forth-code 2! s" " p prim-wordset 2!
                    230:     p ;
                    231: 
1.79      anton     232: 0 value prim     \ in combined prims either combined or a part
                    233: 0 value combined \ in combined prims the combined prim
                    234: variable in-part \ true if processing a part
                    235:  in-part off
                    236: 
                    237: 1000 constant max-combined
                    238: create combined-prims max-combined cells allot
                    239: variable num-combined
                    240: 
1.81      anton     241: table constant combinations
                    242:   \ the keys are the sequences of pointers to primitives
                    243: 
1.79      anton     244: create current-depth max-stacks cells allot
                    245: create max-depth     max-stacks cells allot
                    246: create min-depth     max-stacks cells allot
1.69      anton     247: 
1.71      anton     248: wordlist constant primitives
                    249: 
                    250: : create-prim ( prim -- )
1.82      anton     251:     dup prim-name 2@ primitives ['] constant insert-wordlist ;
1.71      anton     252: 
                    253: : stack-in ( stack -- addr )
                    254:     \ address of number of stack items in effect in
                    255:     stack-number @ cells prim prim-stacks-in + ;
                    256: 
                    257: : stack-out ( stack -- addr )
                    258:     \ address of number of stack items in effect out
                    259:     stack-number @ cells prim prim-stacks-out + ;
                    260: 
1.69      anton     261: \ global vars
1.17      anton     262: variable c-line
                    263: 2variable c-filename
                    264: variable name-line
                    265: 2variable name-filename
                    266: 2variable last-name-filename
1.30      pazsan    267: Variable function-number 0 function-number !
1.1       anton     268: 
                    269: \ a few more set ops
                    270: 
                    271: : bit-equivalent ( w1 w2 -- w3 )
                    272:  xor invert ;
                    273: 
                    274: : complement ( set1 -- set2 )
                    275:  empty ['] bit-equivalent binary-set-operation ;
                    276: 
1.80      anton     277: \ stack access stuff
1.79      anton     278: 
                    279: : normal-stack-access ( n stack -- )
1.49      anton     280:     stack-pointer 2@ type
                    281:     dup
                    282:     if
                    283:        ." [" 0 .r ." ]"
                    284:     else
                    285:        drop ." TOS"
                    286:     endif ;
1.1       anton     287: 
1.80      anton     288: \ forward declaration for inst-stream (breaks cycle in definitions)
                    289: defer inst-stream-f ( -- stack )
                    290: 
1.79      anton     291: : part-stack-access { n stack -- }
1.80      anton     292:     \ print _<stack><x>, x=inst-stream? n : maxdepth-currentdepth-n-1
1.79      anton     293:     ." _" stack stack-pointer 2@ type
                    294:     stack stack-number @ { stack# }
1.80      anton     295:     current-depth stack# th @ n + { access-depth }
                    296:     stack inst-stream-f = if
                    297:        access-depth
                    298:     else
                    299:        combined prim-stacks-in stack# th @
                    300:        assert( dup max-depth stack# th @ = )
                    301:        access-depth - 1-
                    302:     endif
1.79      anton     303:     0 .r ;
                    304: 
                    305: : stack-access ( n stack -- )
                    306:     \ print a stack access at index n of stack
                    307:     in-part @ if
                    308:        part-stack-access
                    309:     else
                    310:        normal-stack-access
                    311:     endif ;
                    312: 
1.53      anton     313: : item-in-index { item -- n }
1.49      anton     314:     \ n is the index of item (in the in-effect)
1.53      anton     315:     item item-stack @ dup >r stack-in @ ( in-size r:stack )
                    316:     item r> stack-in-index-xt @ execute ;
1.1       anton     317: 
1.78      anton     318: : item-stack-type-name ( item -- addr u )
                    319:     item-stack @ stack-type @ type-c-name 2@ ;
                    320: 
1.1       anton     321: : fetch-single ( item -- )
1.49      anton     322:  \ fetch a single stack item from its stack
1.1       anton     323:  >r
1.8       pazsan    324:  r@ item-name 2@ type
1.78      anton     325:  ."  = vm_" r@ item-stack-type-name type
1.77      anton     326:  ." 2" r@ item-type @ print-type-prefix ." ("
1.49      anton     327:  r@ item-in-index r@ item-stack @ stack-access
1.77      anton     328:  ." );" cr
1.1       anton     329:  rdrop ; 
                    330: 
                    331: : fetch-double ( item -- )
1.49      anton     332:  \ fetch a double stack item from its stack
1.1       anton     333:  >r
1.78      anton     334:  ." vm_two"
                    335:  r@ item-stack-type-name type ." 2"
                    336:  r@ item-type @ print-type-prefix ." ("
1.20      anton     337:  r@ item-name 2@ type ." , "
1.61      anton     338:  r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
                    339:  ." , "                      -1 under+ ." (Cell)" stack-access
1.20      anton     340:  ." );" cr
1.1       anton     341:  rdrop ;
                    342: 
1.49      anton     343: : same-as-in? ( item -- f )
                    344:  \ f is true iff the offset and stack of item is the same as on input
1.1       anton     345:  >r
1.74      anton     346:  r@ item-first @ if
                    347:      rdrop false exit
                    348:  endif
1.75      anton     349:  r@ item-name 2@ prim prim-items-wordlist @ search-wordlist 0= abort" bug"
1.1       anton     350:  execute @
                    351:  dup r@ =
                    352:  if \ item first appeared in output
                    353:    drop false
                    354:  else
1.49      anton     355:    dup  item-stack  @ r@ item-stack  @ = 
                    356:    swap item-offset @ r@ item-offset @ = and
1.1       anton     357:  endif
                    358:  rdrop ;
                    359: 
1.49      anton     360: : item-out-index ( item -- n )
                    361:     \ n is the index of item (in the in-effect)
                    362:     >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
1.31      pazsan    363: 
1.1       anton     364: : really-store-single ( item -- )
                    365:  >r
1.77      anton     366:  r@ item-out-index r@ item-stack @ stack-access ."  = vm_"
                    367:  r@ item-type @ print-type-prefix ." 2"
1.78      anton     368:  r@ item-stack-type-name type ." ("
1.77      anton     369:  r@ item-name 2@ type ." );"
1.1       anton     370:  rdrop ;
                    371: 
                    372: : store-single ( item -- )
                    373:  >r
1.49      anton     374:  r@ same-as-in?
1.1       anton     375:  if
1.49      anton     376:    r@ item-in-index 0= r@ item-out-index 0= xor
1.1       anton     377:    if
1.49      anton     378:        ." IF_" r@ item-stack @ stack-pointer 2@ type
                    379:        ." TOS(" r@ really-store-single ." );" cr
1.1       anton     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
1.78      anton     389:  ." vm_"
                    390:  r@ item-type @ print-type-prefix ." 2two"
                    391:  r@ item-stack-type-name type ." ("
                    392:  r@ item-name 2@ type ." , "
1.49      anton     393:  r@ item-out-index r@ item-stack @ 2dup stack-access
                    394:  ." , "                       -1 under+ stack-access
1.20      anton     395:  ." );" cr
1.1       anton     396:  rdrop ;
                    397: 
1.54      anton     398: : single ( -- xt1 xt2 n )
                    399:     ['] fetch-single ['] store-single 1 ;
1.1       anton     400: 
1.54      anton     401: : double ( -- xt1 xt2 n )
                    402:     ['] fetch-double ['] store-double 2 ;
1.1       anton     403: 
                    404: : s, ( addr u -- )
                    405: \ allocate a string
                    406:  here swap dup allot move ;
                    407: 
1.50      anton     408: wordlist constant prefixes
                    409: 
                    410: : declare ( addr "name" -- )
                    411: \ remember that there is a stack item at addr called name
                    412:  create , ;
                    413: 
                    414: : !default ( w addr -- )
                    415:     dup @ if
                    416:        2drop \ leave nonzero alone
                    417:     else
                    418:        !
                    419:     endif ;
                    420: 
                    421: : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
1.49      anton     422:     \ describes a type
                    423:     \ addr u specifies the C type name
                    424:     \ stack effect entries of the type start with prefix
                    425:     create type% %allot >r
                    426:     addr u save-mem r@ type-c-name 2!
                    427:     xt1   r@ type-fetch !
                    428:     xt2   r@ type-store !
                    429:     n     r@ type-size !
                    430:     stack r@ type-stack !
                    431:     rdrop ;
1.1       anton     432: 
1.54      anton     433: : type-prefix ( xt1 xt2 n stack "prefix" -- )
1.50      anton     434:     create-type
                    435: does> ( item -- )
                    436:     \ initialize item
                    437:     { item typ }
                    438:     typ item item-type !
                    439:     typ type-stack @ item item-stack !default
1.75      anton     440:     item item-name 2@ prim prim-items-wordlist @ search-wordlist 0= if
1.66      anton     441:        item item-name 2@ nextname item declare
                    442:        item item-first on
                    443:        \ typ type-c-name 2@ type space type  ." ;" cr
1.50      anton     444:     else
                    445:        drop
1.66      anton     446:        item item-first off
1.50      anton     447:     endif ;
                    448: 
                    449: : execute-prefix ( item addr1 u1 -- )
                    450:     \ execute the word ( item -- ) associated with the longest prefix
                    451:     \ of addr1 u1
                    452:     0 swap ?do
                    453:        dup i prefixes search-wordlist
                    454:        if \ ok, we have the type ( item addr1 xt )
                    455:            nip execute
                    456:            UNLOOP EXIT
                    457:        endif
                    458:        -1 s+loop
                    459:     \ we did not find a type, abort
1.81      anton     460:     false s" unknown prefix" ?print-error ;
1.1       anton     461: 
                    462: : declaration ( item -- )
1.50      anton     463:     dup item-name 2@ execute-prefix ;
1.1       anton     464: 
1.64      anton     465: : declaration-list ( addr1 addr2 -- )
                    466:     ['] declaration map-items ;
                    467: 
                    468: : declarations ( -- )
1.75      anton     469:  wordlist dup prim prim-items-wordlist ! set-current
1.69      anton     470:  prim prim-effect-in prim prim-effect-in-end @ declaration-list
                    471:  prim prim-effect-out prim prim-effect-out-end @ declaration-list ;
1.64      anton     472: 
1.66      anton     473: : print-declaration { item -- }
                    474:     item item-first @ if
                    475:        item item-type @ type-c-name 2@ type space
                    476:        item item-name 2@ type ." ;" cr
                    477:     endif ;
                    478: 
                    479: : print-declarations ( -- )
1.69      anton     480:     prim prim-effect-in  prim prim-effect-in-end  @ ['] print-declaration map-items
                    481:     prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
1.66      anton     482:     
1.51      anton     483: : stack-prefix ( stack "prefix" -- )
                    484:     name tuck nextname create ( stack length ) 2,
                    485: does> ( item -- )
                    486:     2@ { item stack prefix-length }
                    487:     item item-name 2@ prefix-length /string item item-name 2!
                    488:     stack item item-stack !
                    489:     item declaration ;
1.73      anton     490: 
1.74      anton     491: \ types pointed to by stacks for use in combined prims
1.83      anton     492: \ !! output-c-combined shouldn't use these names!
1.92    ! anton     493: : stack-type-name ( addr u "name" -- )
        !           494:     single 0 create-type ;
        !           495: 
        !           496: s" Cell"  stack-type-name w
        !           497: s" Float" stack-type-name r
1.83      anton     498: 
1.92    ! anton     499: s" IP" save-mem w make-stack inst-stream
1.73      anton     500: ' inst-in-index inst-stream stack-in-index-xt !
1.80      anton     501: ' inst-stream <is> inst-stream-f
1.92    ! anton     502: 
        !           503: s" sp" save-mem w make-stack data-stack 
        !           504: s" fp" save-mem r make-stack fp-stack
        !           505: s" rp" save-mem w make-stack return-stack
1.73      anton     506: \ !! initialize stack-in and stack-out
1.1       anton     507: 
                    508: \ offset computation
                    509: \ the leftmost (i.e. deepest) item has offset 0
                    510: \ the rightmost item has the highest offset
                    511: 
1.49      anton     512: : compute-offset { item xt -- }
                    513:     \ xt specifies in/out; update stack-in/out and set item-offset
                    514:     item item-type @ type-size @
                    515:     item item-stack @ xt execute dup @ >r +!
                    516:     r> item item-offset ! ;
                    517: 
1.64      anton     518: : compute-offset-in ( addr1 addr2 -- )
                    519:     ['] stack-in compute-offset ;
                    520: 
                    521: : compute-offset-out ( addr1 addr2 -- )
                    522:     ['] stack-out compute-offset ;
1.49      anton     523: 
                    524: : clear-stack { -- }
                    525:     dup stack-in off stack-out off ;
1.1       anton     526: 
                    527: : compute-offsets ( -- )
1.92    ! anton     528:     ['] clear-stack map-stacks
1.53      anton     529:     inst-stream clear-stack
1.69      anton     530:     prim prim-effect-in  prim prim-effect-in-end  @ ['] compute-offset-in  map-items
                    531:     prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
1.81      anton     532:     inst-stream stack-out @ 0= s" # can only be on the input side" ?print-error ;
                    533: 
                    534: : process-simple ( -- )
                    535:     prim prim { W^ key } key cell
1.82      anton     536:     combinations ['] constant insert-wordlist
1.81      anton     537:     declarations compute-offsets
1.82      anton     538:     output @ execute ;
1.49      anton     539: 
                    540: : flush-a-tos { stack -- }
                    541:     stack stack-out @ 0<> stack stack-in @ 0= and
                    542:     if
                    543:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    544:        2dup type ." [0] = " type ." TOS);" cr
                    545:     endif ;
1.1       anton     546: 
                    547: : flush-tos ( -- )
1.92    ! anton     548:     ['] flush-a-tos map-stacks ;
1.49      anton     549: 
                    550: : fill-a-tos { stack -- }
                    551:     stack stack-out @ 0= stack stack-in @ 0<> and
                    552:     if
                    553:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    554:        2dup type ." TOS = " type ." [0]);" cr
                    555:     endif ;
1.1       anton     556: 
                    557: : fill-tos ( -- )
1.53      anton     558:     \ !! inst-stream for prefetching?
1.92    ! anton     559:     ['] fill-a-tos map-stacks ;
1.49      anton     560: 
                    561: : fetch ( addr -- )
1.72      anton     562:     dup item-type @ type-fetch @ execute ;
1.1       anton     563: 
                    564: : fetches ( -- )
1.69      anton     565:     prim prim-effect-in prim prim-effect-in-end @ ['] fetch map-items ;
1.49      anton     566: 
                    567: : stack-pointer-update { stack -- }
                    568:     \ stack grow downwards
                    569:     stack stack-in @ stack stack-out @ -
                    570:     ?dup-if \ this check is not necessary, gcc would do this for us
                    571:        stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
                    572:     endif ;
1.1       anton     573: 
1.55      anton     574: : inst-pointer-update ( -- )
                    575:     inst-stream stack-in @ ?dup-if
                    576:        ." INC_IP(" 0 .r ." );" cr
                    577:     endif ;
                    578: 
1.1       anton     579: : stack-pointer-updates ( -- )
1.55      anton     580:     inst-pointer-update
1.92    ! anton     581:     ['] stack-pointer-update map-stacks ;
1.1       anton     582: 
                    583: : store ( item -- )
                    584: \ f is true if the item should be stored
                    585: \ f is false if the store is probably not necessary
1.49      anton     586:  dup item-type @ type-store @ execute ;
1.1       anton     587: 
                    588: : stores ( -- )
1.69      anton     589:     prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
1.8       pazsan    590: 
1.91      anton     591: : print-debug-arg { item -- }
                    592:     ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
                    593:     ." printarg_" item item-type @ print-type-prefix
                    594:     ." (" item item-name 2@ type ." );" cr ;
                    595:     
                    596: : print-debug-args ( -- )
                    597:     ." #ifdef VM_DEBUG" cr
                    598:     ." if (vm_debug) {" cr
                    599:     prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
                    600: \    ." fputc('\n', vm_out);" cr
                    601:     ." }" cr
                    602:     ." #endif" cr ;
                    603: 
                    604: : print-debug-result { item -- }
                    605:     item item-first @ if
                    606:        item print-debug-arg
                    607:     endif ;
                    608: 
                    609: : print-debug-results ( -- )
                    610:     cr
                    611:     ." #ifdef VM_DEBUG" cr
                    612:     ." if (vm_debug) {" cr
                    613:     ." fputs(" quote ."  -- " quote ." , vm_out); "
                    614:     prim prim-effect-out prim prim-effect-out-end @ ['] print-debug-result map-items
                    615:     ." fputc('\n', vm_out);" cr
                    616:     ." }" cr
                    617:     ." #endif" cr ;
                    618: 
1.86      anton     619: : output-super-end ( -- )
                    620:     prim prim-c-code 2@ s" SET_IP" search if
                    621:        ." SUPER_END;" cr
                    622:     endif
                    623:     2drop ;
                    624: 
1.52      anton     625: : output-c-tail ( -- )
                    626:     \ the final part of the generated C code
1.86      anton     627:     output-super-end
1.91      anton     628:     print-debug-results
1.52      anton     629:     ." NEXT_P1;" cr
                    630:     stores
                    631:     fill-tos
1.85      anton     632:     ." NEXT_P2;" ;
1.52      anton     633: 
1.85      anton     634: : type-c-code ( c-addr u xt -- )
                    635:     \ like TYPE, but replaces "TAIL;" with tail code produced by xt
                    636:     { xt }
1.52      anton     637:     begin ( c-addr1 u1 )
                    638:        2dup s" TAIL;" search
                    639:     while ( c-addr1 u1 c-addr3 u3 )
                    640:        2dup 2>r drop nip over - type
1.85      anton     641:        xt execute
1.52      anton     642:        2r> 5 /string
                    643:        \ !! resync #line missing
                    644:     repeat
                    645:     2drop type ;
1.63      anton     646: 
1.72      anton     647: : print-entry ( -- )
                    648:     ." I_" prim prim-c-name 2@ type ." :" ;
1.63      anton     649:     
1.43      jwilke    650: : output-c ( -- ) 
1.72      anton     651:  print-entry ."  /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
1.69      anton     652:  ." /* " prim prim-doc 2@ type ."  */" cr
                    653:  ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
1.1       anton     654:  ." {" cr
                    655:  ." DEF_CA" cr
1.66      anton     656:  print-declarations
1.13      anton     657:  ." NEXT_P0;" cr
                    658:  flush-tos
1.1       anton     659:  fetches
1.63      anton     660:  print-debug-args
1.13      anton     661:  stack-pointer-updates
1.1       anton     662:  ." {" cr
1.63      anton     663:  ." #line " c-line @ . quote c-filename 2@ type quote cr
1.85      anton     664:  prim prim-c-code 2@ ['] output-c-tail type-c-code
1.1       anton     665:  ." }" cr
1.52      anton     666:  output-c-tail
1.1       anton     667:  ." }" cr
                    668:  cr
                    669: ;
                    670: 
1.56      anton     671: : disasm-arg { item -- }
                    672:     item item-stack @ inst-stream = if
1.63      anton     673:        ."   fputc(' ', vm_out); "
                    674:        ." printarg_" item item-type @ print-type-prefix
                    675:        ." ((" item item-type @ type-c-name 2@ type ." )"
                    676:        ." ip[" item item-offset @ 1+ 0 .r ." ]);" cr
1.56      anton     677:     endif ;
                    678: 
                    679: : disasm-args ( -- )
1.69      anton     680:     prim prim-effect-in prim prim-effect-in-end @ ['] disasm-arg map-items ;
1.56      anton     681: 
                    682: : output-disasm ( -- )
                    683:     \ generate code for disassembling VM instructions
                    684:     ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
1.69      anton     685:     ."   fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
1.56      anton     686:     disasm-args
                    687:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
1.91      anton     688:     ."   goto _endif_;" cr
                    689:     ." }" cr ;
1.56      anton     690: 
1.86      anton     691: : output-profile ( -- )
                    692:     \ generate code for postprocessing the VM block profile stuff
1.87      anton     693:     ." if (VM_IS_INST(*ip, " function-number @ 0 .r ." )) {" cr
1.86      anton     694:     ."   add_inst(b, " quote  prim prim-name 2@ type quote ." );" cr
                    695:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
                    696:     prim prim-c-code 2@  s" SET_IP"    search nip nip
                    697:     prim prim-c-code 2@  s" SUPER_END" search nip nip or if
                    698:        ."   return;" cr
1.91      anton     699:     else
                    700:        ."   goto _endif_;" cr
1.86      anton     701:     endif
1.91      anton     702:     ." }" cr ;
1.86      anton     703: 
1.60      anton     704: : gen-arg-parm { item -- }
                    705:     item item-stack @ inst-stream = if
                    706:        ." , " item item-type @ type-c-name 2@ type space
                    707:        item item-name 2@ type
                    708:     endif ;
                    709: 
                    710: : gen-args-parm ( -- )
1.69      anton     711:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-parm map-items ;
1.60      anton     712: 
                    713: : gen-arg-gen { item -- }
                    714:     item item-stack @ inst-stream = if
                    715:        ."   genarg_" item item-type @ print-type-prefix
                    716:         ." (ctp, " item item-name 2@ type ." );" cr
                    717:     endif ;
                    718: 
                    719: : gen-args-gen ( -- )
1.69      anton     720:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-gen map-items ;
1.60      anton     721: 
                    722: : output-gen ( -- )
                    723:     \ generate C code for generating VM instructions
1.69      anton     724:     ." void gen_" prim prim-c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
1.60      anton     725:     ." {" cr
                    726:     ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
                    727:     gen-args-gen
1.68      anton     728:     ." }" cr ;
1.60      anton     729: 
1.49      anton     730: : stack-used? { stack -- f }
                    731:     stack stack-in @ stack stack-out @ or 0<> ;
1.44      jwilke    732: 
1.30      pazsan    733: : output-funclabel ( -- )
1.69      anton     734:   ." &I_" prim prim-c-name 2@ type ." ," cr ;
1.30      pazsan    735: 
                    736: : output-forthname ( -- )
1.69      anton     737:   '" emit prim prim-name 2@ type '" emit ." ," cr ;
1.30      pazsan    738: 
1.92    ! anton     739: \  : output-c-func ( -- )
        !           740: \  \ used for word libraries
        !           741: \      ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
        !           742: \      ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
        !           743: \      ." /* " prim prim-doc 2@ type ."  */" cr
        !           744: \      ." NAME(" quote prim prim-name 2@ type quote ." )" cr
        !           745: \      \ debugging
        !           746: \      ." {" cr
        !           747: \      print-declarations
        !           748: \      \ !! don't know what to do about that
        !           749: \      inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
        !           750: \      data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
        !           751: \      fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
        !           752: \      return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
        !           753: \      flush-tos
        !           754: \      fetches
        !           755: \      stack-pointer-updates
        !           756: \      fp-stack   stack-used? IF ." *FP=fp;" cr THEN
        !           757: \      ." {" cr
        !           758: \      ." #line " c-line @ . quote c-filename 2@ type quote cr
        !           759: \      prim prim-c-code 2@ type
        !           760: \      ." }" cr
        !           761: \      stores
        !           762: \      fill-tos
        !           763: \      ." return (sp);" cr
        !           764: \      ." }" cr
        !           765: \      cr ;
1.30      pazsan    766: 
1.43      jwilke    767: : output-label ( -- )  
1.69      anton     768:     ." (Label)&&I_" prim prim-c-name 2@ type ." ," cr ;
1.1       anton     769: 
1.43      jwilke    770: : output-alias ( -- ) 
1.69      anton     771:     ( primitive-number @ . ." alias " ) ." Primitive " prim prim-name 2@ type cr ;
1.1       anton     772: 
1.43      jwilke    773: : output-forth ( -- )  
1.69      anton     774:     prim prim-forth-code @ 0=
1.30      pazsan    775:     IF         \ output-alias
1.28      jwilke    776:        \ this is bad for ec: an alias is compiled if tho word does not exist!
                    777:        \ JAW
1.69      anton     778:     ELSE  ." : " prim prim-name 2@ type ."   ( "
                    779:        prim prim-stack-string 2@ type ." )" cr
                    780:        prim prim-forth-code 2@ type cr
1.30      pazsan    781:     THEN ;
1.10      anton     782: 
1.17      anton     783: : output-tag-file ( -- )
                    784:     name-filename 2@ last-name-filename 2@ compare if
                    785:        name-filename 2@ last-name-filename 2!
                    786:        #ff emit cr
                    787:        name-filename 2@ type
                    788:        ." ,0" cr
                    789:     endif ;
                    790: 
                    791: : output-tag ( -- )
                    792:     output-tag-file
1.69      anton     793:     prim prim-name 2@ 1+ type
1.17      anton     794:     127 emit
1.69      anton     795:     space prim prim-name 2@ type space
1.17      anton     796:     1 emit
                    797:     name-line @ 0 .r
                    798:     ." ,0" cr ;
                    799: 
1.10      anton     800: [IFDEF] documentation
                    801: : register-doc ( -- )
1.82      anton     802:     prim prim-name 2@ documentation ['] create insert-wordlist
1.69      anton     803:     prim prim-name 2@ 2,
                    804:     prim prim-stack-string 2@ condition-stack-effect 2,
                    805:     prim prim-wordset 2@ 2,
                    806:     prim prim-c-name 2@ condition-pronounciation 2,
1.82      anton     807:     prim prim-doc 2@ 2, ;
1.10      anton     808: [THEN]
1.67      anton     809: 
                    810: 
1.69      anton     811: \ combining instructions
                    812: 
                    813: \ The input should look like this:
                    814: 
                    815: \ lit_+ = lit +
                    816: 
                    817: \ The output should look like this:
                    818: 
                    819: \  I_lit_+:
                    820: \  {
                    821: \  DEF_CA
                    822: \  Cell _x_ip0;
                    823: \  Cell _x_sp0;
                    824: \  Cell _x_sp1;
                    825: \  NEXT_P0;
                    826: \  _x_ip0 = (Cell) IPTOS;
                    827: \  _x_sp0 = (Cell) spTOS;
                    828: \  INC_IP(1);
                    829: \  /* sp += 0; */
                    830: \  /* lit ( #w -- w ) */
                    831: \  /*  */
                    832: \  NAME("lit")
                    833: \  {
                    834: \  Cell w;
                    835: \  w = (Cell) _x_ip0;
                    836: \  #ifdef VM_DEBUG
                    837: \  if (vm_debug) {
                    838: \  fputs(" w=", vm_out); printarg_w (w);
                    839: \  fputc('\n', vm_out);
                    840: \  }
                    841: \  #endif
                    842: \  {
                    843: \  #line 136 "./prim"
                    844: \  }
                    845: \  _x_sp1 = (Cell)w;
                    846: \  }
                    847: \  I_plus:     /* + ( n1 n2 -- n ) */
                    848: \  /*  */
                    849: \  NAME("+")
                    850: \  {
                    851: \  DEF_CA
                    852: \  Cell n1;
                    853: \  Cell n2;
                    854: \  Cell n;
                    855: \  NEXT_P0;
                    856: \  n1 = (Cell) _x_sp0;
                    857: \  n2 = (Cell) _x_sp1;
                    858: \  #ifdef VM_DEBUG
                    859: \  if (vm_debug) {
                    860: \  fputs(" n1=", vm_out); printarg_n (n1);
                    861: \  fputs(" n2=", vm_out); printarg_n (n2);
                    862: \  fputc('\n', vm_out);
                    863: \  }
                    864: \  #endif
                    865: \  {
                    866: \  #line 516 "./prim"
                    867: \  n = n1+n2;
                    868: \  }
                    869: \  NEXT_P1;
                    870: \  _x_sp0 = (Cell)n;
                    871: \  NEXT_P2;
                    872: \  }
                    873: \  NEXT_P1;
                    874: \  spTOS = (Cell)_x_sp0;
                    875: \  NEXT_P2;
                    876: 
1.71      anton     877: : init-combined ( -- )
1.79      anton     878:     prim to combined
1.71      anton     879:     0 num-combined !
                    880:     current-depth max-stacks cells erase
1.72      anton     881:     max-depth     max-stacks cells erase
                    882:     min-depth     max-stacks cells erase
                    883:     prim prim-effect-in  prim prim-effect-in-end  !
                    884:     prim prim-effect-out prim prim-effect-out-end ! ;
1.71      anton     885: 
                    886: : max! ( n addr -- )
                    887:     tuck @ max swap ! ;
                    888: 
1.72      anton     889: : min! ( n addr -- )
                    890:     tuck @ min swap ! ;
                    891: 
1.71      anton     892: : add-depths { p -- }
                    893:     \ combine stack effect of p with *-depths
                    894:     max-stacks 0 ?do
1.72      anton     895:        current-depth i th @
                    896:        p prim-stacks-in  i th @ +
                    897:        dup max-depth i th max!
                    898:        p prim-stacks-out i th @ -
                    899:        dup min-depth i th min!
                    900:        current-depth i th !
1.71      anton     901:     loop ;
                    902: 
                    903: : add-prim ( addr u -- )
                    904:     \ add primitive given by "addr u" to combined-prims
                    905:     primitives search-wordlist s" unknown primitive" ?print-error
                    906:     execute { p }
1.72      anton     907:     p combined-prims num-combined @ th !
1.71      anton     908:     1 num-combined +!
                    909:     p add-depths ;
                    910: 
                    911: : compute-effects { q -- }
                    912:     \ compute the stack effects of q from the depths
                    913:     max-stacks 0 ?do
1.72      anton     914:        max-depth i th @ dup
                    915:        q prim-stacks-in i th !
                    916:        current-depth i th @ -
                    917:        q prim-stacks-out i th !
                    918:     loop ;
                    919: 
                    920: : make-effect-items { stack# items effect-endp -- }
                    921:     \ effect-endp points to a pointer to the end of the current item-array
                    922:     \ and has to be updated
                    923:     stacks stack# th @ { stack }
                    924:     items 0 +do
                    925:        effect-endp @ { item }
                    926:        i 0 <# #s stack stack-pointer 2@ holds [char] _ hold #> save-mem
                    927:        item item-name 2!
                    928:        stack item item-stack !
1.74      anton     929:        stack stack-type @ item item-type !
1.72      anton     930:        i item item-offset !
                    931:        item item-first on
                    932:        item% %size effect-endp +!
                    933:     loop ;
                    934: 
                    935: : init-effects { q -- }
                    936:     \ initialize effects field for FETCHES and STORES
                    937:     max-stacks 0 ?do
                    938:        i q prim-stacks-in  i th @ q prim-effect-in-end  make-effect-items
                    939:        i q prim-stacks-out i th @ q prim-effect-out-end make-effect-items
1.71      anton     940:     loop ;
                    941: 
                    942: : process-combined ( -- )
1.81      anton     943:     combined combined-prims num-combined @ cells
1.82      anton     944:     combinations ['] constant insert-wordlist
1.86      anton     945:     combined-prims num-combined @ 1- th ( last-part )
                    946:     @ prim-c-code 2@ prim prim-c-code 2! \ used by output-super-end
1.72      anton     947:     prim compute-effects
                    948:     prim init-effects
                    949:     output-combined perform ;
                    950: 
                    951: \ C output
                    952: 
                    953: : print-item { n stack -- }
                    954:     \ print nth stack item name
1.79      anton     955:     stack stack-type @ type-c-name 2@ type space
                    956:     ." _" stack stack-pointer 2@ type n 0 .r ;
1.72      anton     957: 
                    958: : print-declarations-combined ( -- )
                    959:     max-stacks 0 ?do
                    960:        max-depth i th @ min-depth i th @ - 0 +do
                    961:            i stacks j th @ print-item ." ;" cr
                    962:        loop
                    963:     loop ;
1.79      anton     964: 
                    965: : part-fetches ( -- )
                    966:     fetches ;
                    967: 
                    968: : part-output-c-tail ( -- )
1.91      anton     969:     print-debug-results
1.85      anton     970:     stores ;
                    971: 
                    972: : output-combined-tail ( -- )
                    973:     part-output-c-tail
                    974:     prim >r combined to prim
                    975:     in-part @ >r in-part off
                    976:     output-c-tail
                    977:     r> in-part ! r> to prim ;
1.79      anton     978: 
                    979: : output-part ( p -- )
                    980:     to prim
                    981:     ." /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
                    982:     ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
                    983:     ." {" cr
                    984:     print-declarations
                    985:     part-fetches
                    986:     print-debug-args
                    987:     prim add-depths \ !! right place?
                    988:     ." {" cr
                    989:     ." #line " c-line @ . quote c-filename 2@ type quote cr
1.85      anton     990:     prim prim-c-code 2@ ['] output-combined-tail type-c-code
1.79      anton     991:     ." }" cr
                    992:     part-output-c-tail
                    993:     ." }" cr ;
                    994: 
1.74      anton     995: : output-parts ( -- )
1.79      anton     996:     prim >r in-part on
                    997:     current-depth max-stacks cells erase
1.74      anton     998:     num-combined @ 0 +do
1.79      anton     999:        combined-prims i th @ output-part
1.74      anton    1000:     loop
1.79      anton    1001:     in-part off
1.74      anton    1002:     r> to prim ;
                   1003: 
1.72      anton    1004: : output-c-combined ( -- )
                   1005:     print-entry cr
1.74      anton    1006:     \ debugging messages just in parts
1.72      anton    1007:     ." {" cr
                   1008:     ." DEF_CA" cr
                   1009:     print-declarations-combined
                   1010:     ." NEXT_P0;" cr
                   1011:     flush-tos
                   1012:     fetches
1.74      anton    1013:     \ print-debug-args
                   1014:     stack-pointer-updates
                   1015:     output-parts
                   1016:     output-c-tail
                   1017:     ." }" cr
                   1018:     cr ;
1.72      anton    1019: 
                   1020: : output-forth-combined ( -- )
1.81      anton    1021: ;
                   1022: 
                   1023: 
1.83      anton    1024: \ peephole optimization rules
1.81      anton    1025: 
                   1026: \ in order for this to work as intended, shorter combinations for each
                   1027: \ length must be present, and the longer combinations must follow
                   1028: \ shorter ones (this restriction may go away in the future).
                   1029:   
1.83      anton    1030: : output-peephole ( -- )
1.81      anton    1031:     combined-prims num-combined @ 1- cells combinations search-wordlist
                   1032:     s" the prefix for this combination must be defined earlier" ?print-error
1.82      anton    1033:     ." {"
                   1034:     execute prim-num @ 5 .r ." ,"
                   1035:     combined-prims num-combined @ 1- th @ prim-num @ 5 .r ." ,"
                   1036:     combined prim-num @ 5 .r ." }, /* "
                   1037:     combined prim-c-name 2@ type ."  */"
                   1038:     cr ;
                   1039: 
1.90      pazsan   1040: : output-forth-peephole ( -- )
                   1041:     combined-prims num-combined @ 1- cells combinations search-wordlist
                   1042:     s" the prefix for this combination must be defined earlier" ?print-error
                   1043:     execute prim-num @ 5 .r
                   1044:     combined-prims num-combined @ 1- th @ prim-num @ 5 .r
                   1045:     combined prim-num @ 5 .r ."  prim, \ "
                   1046:     combined prim-c-name 2@ type
                   1047:     cr ;
                   1048: 
1.69      anton    1049: 
1.67      anton    1050: \ the parser
                   1051: 
                   1052: eof-char max-member \ the whole character set + EOF
                   1053: 
                   1054: : getinput ( -- n )
                   1055:  rawinput @ endrawinput @ =
                   1056:  if
                   1057:    eof-char
                   1058:  else
                   1059:    cookedinput @ c@
                   1060:  endif ;
                   1061: 
                   1062: :noname ( n -- )
                   1063:  dup bl > if
                   1064:   emit space
                   1065:  else
                   1066:   .
                   1067:  endif ;
                   1068: print-token !
                   1069: 
                   1070: : testchar? ( set -- f )
                   1071:  getinput member? ;
                   1072: ' testchar? test-vector !
                   1073: 
                   1074: : checksyncline ( -- )
                   1075:     \ when input points to a newline, check if the next line is a
                   1076:     \ sync line.  If it is, perform the appropriate actions.
                   1077:     rawinput @ >r
                   1078:     s" #line " r@ over compare 0<> if
                   1079:        rdrop 1 line +! EXIT
                   1080:     endif
                   1081:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
                   1082:     dup c@ bl = if
1.81      anton    1083:        char+ dup c@ [char] " <> 0= s" sync line syntax" ?print-error
1.67      anton    1084:        char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
                   1085:        char+
                   1086:     endif
1.81      anton    1087:     dup c@ nl-char <> 0= s" sync line syntax" ?print-error
1.67      anton    1088:     skipsynclines @ if
                   1089:        dup char+ rawinput !
                   1090:        rawinput @ c@ cookedinput @ c!
                   1091:     endif
                   1092:     drop ;
                   1093: 
                   1094: : ?nextchar ( f -- )
1.71      anton    1095:     s" syntax error, wrong char" ?print-error
1.67      anton    1096:     rawinput @ endrawinput @ <> if
                   1097:        rawinput @ c@
                   1098:        1 chars rawinput +!
                   1099:        1 chars cookedinput +!
                   1100:        nl-char = if
                   1101:            checksyncline
                   1102:            rawinput @ line-start !
                   1103:        endif
                   1104:        rawinput @ c@ cookedinput @ c!
                   1105:     endif ;
                   1106: 
                   1107: : charclass ( set "name" -- )
                   1108:  ['] ?nextchar terminal ;
                   1109: 
                   1110: : .. ( c1 c2 -- set )
                   1111:  ( creates a set that includes the characters c, c1<=c<=c2 )
                   1112:  empty copy-set
                   1113:  swap 1+ rot do
                   1114:   i over add-member
                   1115:  loop ;
                   1116: 
                   1117: : ` ( -- terminal ) ( use: ` c )
                   1118:  ( creates anonymous terminal for the character c )
                   1119:  char singleton ['] ?nextchar make-terminal ;
                   1120: 
                   1121: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
                   1122: char 0 char 9 ..                                       charclass digit
                   1123: bl singleton tab-char over add-member                  charclass white
                   1124: nl-char singleton eof-char over add-member complement  charclass nonl
                   1125: nl-char singleton eof-char over add-member
                   1126:     char : over add-member complement                   charclass nocolonnl
                   1127: bl 1+ maxchar .. char \ singleton complement intersection
                   1128:                                                         charclass nowhitebq
                   1129: bl 1+ maxchar ..                                        charclass nowhite
                   1130: char " singleton eof-char over add-member complement   charclass noquote
                   1131: nl-char singleton                                      charclass nl
                   1132: eof-char singleton                                     charclass eof
1.79      anton    1133: nl-char singleton eof-char over add-member             charclass nleof
1.67      anton    1134: 
                   1135: (( letter (( letter || digit )) **
                   1136: )) <- c-ident ( -- )
                   1137: 
                   1138: (( ` # ?? (( letter || digit || ` : )) **
                   1139: )) <- stack-ident ( -- )
                   1140: 
                   1141: (( nowhitebq nowhite ** ))
                   1142: <- forth-ident ( -- )
                   1143: 
                   1144: Variable forth-flag
                   1145: Variable c-flag
                   1146: 
                   1147: (( (( ` e || ` E )) {{ start }} nonl ** 
                   1148:    {{ end evaluate }}
                   1149: )) <- eval-comment ( ... -- ... )
                   1150: 
                   1151: (( (( ` f || ` F )) {{ start }} nonl ** 
                   1152:    {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
                   1153: )) <- forth-comment ( -- )
                   1154: 
                   1155: (( (( ` c || ` C )) {{ start }} nonl ** 
                   1156:    {{ end c-flag @ IF type cr ELSE 2drop THEN }}
                   1157: )) <- c-comment ( -- )
                   1158: 
                   1159: (( ` - nonl ** {{ 
                   1160:        forth-flag @ IF ." [ELSE]" cr THEN
                   1161:        c-flag @ IF ." #else" cr THEN }}
                   1162: )) <- else-comment
                   1163: 
                   1164: (( ` + {{ start }} nonl ** {{ end
                   1165:        dup
                   1166:        IF      c-flag @
                   1167:                IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
                   1168:                THEN
                   1169:                forth-flag @
                   1170:                IF  ." has? " type ."  [IF]"  cr THEN
                   1171:        ELSE    2drop
                   1172:            c-flag @      IF  ." #endif"  cr THEN
                   1173:            forth-flag @  IF  ." [THEN]"  cr THEN
                   1174:        THEN }}
                   1175: )) <- if-comment
                   1176: 
                   1177: (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
                   1178: 
1.79      anton    1179: (( ` \ comment-body nleof )) <- comment ( -- )
1.67      anton    1180: 
                   1181: (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
                   1182: <- stack-items
                   1183: 
1.69      anton    1184: (( {{ prim prim-effect-in }}  stack-items {{ prim prim-effect-in-end ! }}
1.67      anton    1185:    ` - ` - white **
1.69      anton    1186:    {{ prim prim-effect-out }} stack-items {{ prim prim-effect-out-end ! }}
1.67      anton    1187: )) <- stack-effect ( -- )
                   1188: 
1.71      anton    1189: (( {{ prim create-prim }}
1.69      anton    1190:    ` ( white ** {{ start }} stack-effect {{ end prim prim-stack-string 2! }} ` ) white **
                   1191:    (( {{ start }} forth-ident {{ end prim prim-wordset 2! }} white **
                   1192:       (( {{ start }}  c-ident {{ end prim prim-c-name 2! }} )) ??
1.79      anton    1193:    )) ??  nleof
                   1194:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- prim prim-doc 2! }} ` " white ** nleof )) ??
                   1195:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nleof white ** )) ** {{ end prim prim-c-code 2! skipsynclines on }}
                   1196:    (( ` :  white ** nleof
                   1197:       {{ start }} (( nonl ++  nleof white ** )) ++ {{ end prim prim-forth-code 2! }}
1.81      anton    1198:    )) ?? {{ process-simple }}
1.79      anton    1199:    nleof
1.69      anton    1200: )) <- simple-primitive ( -- )
                   1201: 
1.71      anton    1202: (( {{ init-combined }}
1.89      anton    1203:    ` = white ** (( {{ start }} forth-ident {{ end add-prim }} white ** )) ++
1.79      anton    1204:    nleof {{ process-combined }}
1.69      anton    1205: )) <- combined-primitive
                   1206: 
1.79      anton    1207: (( {{ make-prim to prim 0 to combined
1.69      anton    1208:       line @ name-line ! filename 2@ name-filename 2!
1.82      anton    1209:       function-number @ prim prim-num !
1.69      anton    1210:       start }} forth-ident {{ end 2dup prim prim-name 2! prim prim-c-name 2! }}  white ++
1.82      anton    1211:    (( simple-primitive || combined-primitive )) {{ 1 function-number +! }}
1.67      anton    1212: )) <- primitive ( -- )
                   1213: 
                   1214: (( (( comment || primitive || nl white ** )) ** eof ))
                   1215: parser primitives2something
                   1216: warnings @ [IF]
                   1217: .( parser generated ok ) cr
                   1218: [THEN]
                   1219: 
1.69      anton    1220: : primfilter ( addr u -- )
                   1221:     \ process the string at addr u
                   1222:     over dup rawinput ! dup line-start ! cookedinput !
                   1223:     + endrawinput !
                   1224:     checksyncline
                   1225:     primitives2something ;    
1.8       pazsan   1226: 
1.72      anton    1227: : process-file ( addr u xt-simple x-combined -- )
                   1228:     output-combined ! output !
1.61      anton    1229:     save-mem 2dup filename 2!
1.69      anton    1230:     slurp-file
1.17      anton    1231:     warnings @ if
                   1232:        ." ------------ CUT HERE -------------" cr  endif
1.69      anton    1233:     primfilter ;
1.30      pazsan   1234: 
1.72      anton    1235: \  : process      ( xt -- )
                   1236: \      bl word count rot
                   1237: \      process-file ;

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