Annotation of gforth/prims2x.fs, revision 1.81

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: 
1.81    ! anton     104: : wordlist-insert { c-addr u wordlist xt -- }
        !           105:     \ adds name "addr u" to wordlist using defining word xt
        !           106:     \ xt may cause additional stack effects
        !           107:     get-current >r wordlist set-current
        !           108:     c-addr u nextname xt execute
        !           109:     r> set-current ;
        !           110: 
1.1       anton     111: : start ( -- addr )
1.18      anton     112:  cookedinput @ ;
1.1       anton     113: 
                    114: : end ( addr -- addr u )
1.18      anton     115:  cookedinput @ over - ;
1.1       anton     116: 
1.71      anton     117: : print-error-line ( -- )
                    118:     \ print the current line and position
                    119:     line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )
                    120:     over - type cr
                    121:     line-start @ rawinput @ over - typewhite ." ^" cr ;
                    122: 
                    123: : ?print-error { f addr u -- }
                    124:     f ?not? if
                    125:        outfile-id >r try
                    126:            stderr to outfile-id
                    127:            filename 2@ type ." :" line @ 0 .r ." : " addr u type cr
                    128:            print-error-line
                    129:            0
                    130:        recover endtry
                    131:        r> to outfile-id throw
                    132:        abort
                    133:     endif ;
                    134: 
1.63      anton     135: : quote ( -- )
                    136:     [char] " emit ;
                    137: 
1.72      anton     138: variable output          \ xt ( -- ) of output word for simple primitives
                    139: variable output-combined \ xt ( -- ) of output word for combined primitives
1.1       anton     140: 
1.49      anton     141: struct%
1.71      anton     142:     cell%    field stack-number \ the number of this stack
1.49      anton     143:     cell% 2* field stack-pointer \ stackpointer name
1.74      anton     144:     cell%    field stack-type \ name for default type of stack items
1.49      anton     145:     cell% 2* field stack-cast \ cast string for assignments to stack elements
1.53      anton     146:     cell%    field stack-in-index-xt \ ( in-size item -- in-index )
1.49      anton     147: end-struct stack%
                    148: 
1.53      anton     149: struct%
                    150:  cell% 2* field item-name   \ name, excluding stack prefixes
                    151:  cell%    field item-stack  \ descriptor for the stack used, 0 is default
                    152:  cell%    field item-type   \ descriptor for the item type
                    153:  cell%    field item-offset \ offset in stack items, 0 for the deepest element
1.66      anton     154:  cell%   field item-first  \ true if this is the first occurence of the item
1.53      anton     155: end-struct item%
                    156: 
                    157: struct%
                    158:     cell% 2* field type-c-name
                    159:     cell%    field type-stack \ default stack
                    160:     cell%    field type-size  \ size of type in stack items
                    161:     cell%    field type-fetch \ xt of fetch code generator ( item -- )
                    162:     cell%    field type-store \ xt of store code generator ( item -- )
                    163: end-struct type%
                    164: 
1.72      anton     165: variable next-stack-number 0 next-stack-number !
                    166: create stacks max-stacks cells allot \ array of stacks
                    167: 
1.53      anton     168: : stack-in-index ( in-size item -- in-index )
                    169:     item-offset @ - 1- ;
                    170: 
                    171: : inst-in-index ( in-size item -- in-index )
                    172:     nip dup item-offset @ swap item-type @ type-size @ + 1- ;
                    173: 
1.74      anton     174: : make-stack ( addr-ptr u1 type addr-cast u2 "stack-name" -- )
1.49      anton     175:     create stack% %allot >r
1.72      anton     176:     r@ stacks next-stack-number @ th !
1.71      anton     177:     next-stack-number @ r@ stack-number !  1 next-stack-number +!
1.49      anton     178:     save-mem r@ stack-cast 2!
1.74      anton     179:     r@ stack-type !
1.53      anton     180:     save-mem r@ stack-pointer 2! 
                    181:     ['] stack-in-index r> stack-in-index-xt ! ;
1.49      anton     182: 
                    183: \ stack items
                    184: 
                    185: : init-item ( addr u addr1 -- )
                    186:     \ initialize item at addr1 with name addr u
                    187:     \ !! remove stack prefix
                    188:     dup item% %size erase
                    189:     item-name 2! ;
                    190: 
1.64      anton     191: : map-items { addr end xt -- }
                    192:     \ perform xt for all items in array addr...end
                    193:     end addr ?do
                    194:        i xt execute
                    195:     item% %size +loop ;
                    196: 
1.77      anton     197: \ types
                    198: 
                    199: : print-type-prefix ( type -- )
                    200:     body> >head name>string type ;
                    201: 
1.49      anton     202: \ various variables for storing stuff of one primitive
1.1       anton     203: 
1.69      anton     204: struct%
                    205:     cell% 2* field prim-name
                    206:     cell% 2* field prim-wordset
                    207:     cell% 2* field prim-c-name
                    208:     cell% 2* field prim-doc
                    209:     cell% 2* field prim-c-code
                    210:     cell% 2* field prim-forth-code
                    211:     cell% 2* field prim-stack-string
1.75      anton     212:     cell%    field prim-items-wordlist \ unique items
1.69      anton     213:     item% max-effect * field prim-effect-in
                    214:     item% max-effect * field prim-effect-out
                    215:     cell%    field prim-effect-in-end
                    216:     cell%    field prim-effect-out-end
1.71      anton     217:     cell% max-stacks * field prim-stacks-in  \ number of in items per stack
                    218:     cell% max-stacks * field prim-stacks-out \ number of out items per stack
1.69      anton     219: end-struct prim%
                    220: 
1.70      anton     221: : make-prim ( -- prim )
                    222:     prim% %alloc { p }
                    223:     s" " p prim-doc 2! s" " p prim-forth-code 2! s" " p prim-wordset 2!
                    224:     p ;
                    225: 
1.79      anton     226: 0 value prim     \ in combined prims either combined or a part
                    227: 0 value combined \ in combined prims the combined prim
                    228: variable in-part \ true if processing a part
                    229:  in-part off
                    230: 
                    231: 1000 constant max-combined
                    232: create combined-prims max-combined cells allot
                    233: variable num-combined
                    234: 
1.81    ! anton     235: table constant combinations
        !           236:   \ the keys are the sequences of pointers to primitives
        !           237: 
1.79      anton     238: create current-depth max-stacks cells allot
                    239: create max-depth     max-stacks cells allot
                    240: create min-depth     max-stacks cells allot
1.69      anton     241: 
1.71      anton     242: wordlist constant primitives
                    243: 
                    244: : create-prim ( prim -- )
                    245:     get-current >r
                    246:     primitives set-current
                    247:     dup prim-name 2@ nextname constant
                    248:     r> set-current ;
                    249: 
                    250: : stack-in ( stack -- addr )
                    251:     \ address of number of stack items in effect in
                    252:     stack-number @ cells prim prim-stacks-in + ;
                    253: 
                    254: : stack-out ( stack -- addr )
                    255:     \ address of number of stack items in effect out
                    256:     stack-number @ cells prim prim-stacks-out + ;
                    257: 
1.69      anton     258: \ global vars
1.17      anton     259: variable c-line
                    260: 2variable c-filename
                    261: variable name-line
                    262: 2variable name-filename
                    263: 2variable last-name-filename
1.30      pazsan    264: Variable function-number 0 function-number !
1.1       anton     265: 
                    266: \ a few more set ops
                    267: 
                    268: : bit-equivalent ( w1 w2 -- w3 )
                    269:  xor invert ;
                    270: 
                    271: : complement ( set1 -- set2 )
                    272:  empty ['] bit-equivalent binary-set-operation ;
                    273: 
1.80      anton     274: \ stack access stuff
1.79      anton     275: 
                    276: : normal-stack-access ( n stack -- )
1.49      anton     277:     stack-pointer 2@ type
                    278:     dup
                    279:     if
                    280:        ." [" 0 .r ." ]"
                    281:     else
                    282:        drop ." TOS"
                    283:     endif ;
1.1       anton     284: 
1.80      anton     285: \ forward declaration for inst-stream (breaks cycle in definitions)
                    286: defer inst-stream-f ( -- stack )
                    287: 
1.79      anton     288: : part-stack-access { n stack -- }
1.80      anton     289:     \ print _<stack><x>, x=inst-stream? n : maxdepth-currentdepth-n-1
1.79      anton     290:     ." _" stack stack-pointer 2@ type
                    291:     stack stack-number @ { stack# }
1.80      anton     292:     current-depth stack# th @ n + { access-depth }
                    293:     stack inst-stream-f = if
                    294:        access-depth
                    295:     else
                    296:        combined prim-stacks-in stack# th @
                    297:        assert( dup max-depth stack# th @ = )
                    298:        access-depth - 1-
                    299:     endif
1.79      anton     300:     0 .r ;
                    301: 
                    302: : stack-access ( n stack -- )
                    303:     \ print a stack access at index n of stack
                    304:     in-part @ if
                    305:        part-stack-access
                    306:     else
                    307:        normal-stack-access
                    308:     endif ;
                    309: 
1.53      anton     310: : item-in-index { item -- n }
1.49      anton     311:     \ n is the index of item (in the in-effect)
1.53      anton     312:     item item-stack @ dup >r stack-in @ ( in-size r:stack )
                    313:     item r> stack-in-index-xt @ execute ;
1.1       anton     314: 
1.78      anton     315: : item-stack-type-name ( item -- addr u )
                    316:     item-stack @ stack-type @ type-c-name 2@ ;
                    317: 
1.1       anton     318: : fetch-single ( item -- )
1.49      anton     319:  \ fetch a single stack item from its stack
1.1       anton     320:  >r
1.8       pazsan    321:  r@ item-name 2@ type
1.78      anton     322:  ."  = vm_" r@ item-stack-type-name type
1.77      anton     323:  ." 2" r@ item-type @ print-type-prefix ." ("
1.49      anton     324:  r@ item-in-index r@ item-stack @ stack-access
1.77      anton     325:  ." );" cr
1.1       anton     326:  rdrop ; 
                    327: 
                    328: : fetch-double ( item -- )
1.49      anton     329:  \ fetch a double stack item from its stack
1.1       anton     330:  >r
1.78      anton     331:  ." vm_two"
                    332:  r@ item-stack-type-name type ." 2"
                    333:  r@ item-type @ print-type-prefix ." ("
1.20      anton     334:  r@ item-name 2@ type ." , "
1.61      anton     335:  r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
                    336:  ." , "                      -1 under+ ." (Cell)" stack-access
1.20      anton     337:  ." );" cr
1.1       anton     338:  rdrop ;
                    339: 
1.49      anton     340: : same-as-in? ( item -- f )
                    341:  \ f is true iff the offset and stack of item is the same as on input
1.1       anton     342:  >r
1.74      anton     343:  r@ item-first @ if
                    344:      rdrop false exit
                    345:  endif
1.75      anton     346:  r@ item-name 2@ prim prim-items-wordlist @ search-wordlist 0= abort" bug"
1.1       anton     347:  execute @
                    348:  dup r@ =
                    349:  if \ item first appeared in output
                    350:    drop false
                    351:  else
1.49      anton     352:    dup  item-stack  @ r@ item-stack  @ = 
                    353:    swap item-offset @ r@ item-offset @ = and
1.1       anton     354:  endif
                    355:  rdrop ;
                    356: 
1.49      anton     357: : item-out-index ( item -- n )
                    358:     \ n is the index of item (in the in-effect)
                    359:     >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
1.31      pazsan    360: 
1.1       anton     361: : really-store-single ( item -- )
                    362:  >r
1.77      anton     363:  r@ item-out-index r@ item-stack @ stack-access ."  = vm_"
                    364:  r@ item-type @ print-type-prefix ." 2"
1.78      anton     365:  r@ item-stack-type-name type ." ("
1.77      anton     366:  r@ item-name 2@ type ." );"
1.1       anton     367:  rdrop ;
                    368: 
                    369: : store-single ( item -- )
                    370:  >r
1.49      anton     371:  r@ same-as-in?
1.1       anton     372:  if
1.49      anton     373:    r@ item-in-index 0= r@ item-out-index 0= xor
1.1       anton     374:    if
1.49      anton     375:        ." IF_" r@ item-stack @ stack-pointer 2@ type
                    376:        ." TOS(" r@ really-store-single ." );" cr
1.1       anton     377:    endif
                    378:  else
                    379:    r@ really-store-single cr
                    380:  endif
                    381:  rdrop ;
                    382: 
                    383: : store-double ( item -- )
                    384: \ !! store optimization is not performed, because it is not yet needed
                    385:  >r
1.78      anton     386:  ." vm_"
                    387:  r@ item-type @ print-type-prefix ." 2two"
                    388:  r@ item-stack-type-name type ." ("
                    389:  r@ item-name 2@ type ." , "
1.49      anton     390:  r@ item-out-index r@ item-stack @ 2dup stack-access
                    391:  ." , "                       -1 under+ stack-access
1.20      anton     392:  ." );" cr
1.1       anton     393:  rdrop ;
                    394: 
1.54      anton     395: : single ( -- xt1 xt2 n )
                    396:     ['] fetch-single ['] store-single 1 ;
1.1       anton     397: 
1.54      anton     398: : double ( -- xt1 xt2 n )
                    399:     ['] fetch-double ['] store-double 2 ;
1.1       anton     400: 
                    401: : s, ( addr u -- )
                    402: \ allocate a string
                    403:  here swap dup allot move ;
                    404: 
1.50      anton     405: wordlist constant prefixes
                    406: 
                    407: : declare ( addr "name" -- )
                    408: \ remember that there is a stack item at addr called name
                    409:  create , ;
                    410: 
                    411: : !default ( w addr -- )
                    412:     dup @ if
                    413:        2drop \ leave nonzero alone
                    414:     else
                    415:        !
                    416:     endif ;
                    417: 
                    418: : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
1.49      anton     419:     \ describes a type
                    420:     \ addr u specifies the C type name
                    421:     \ stack effect entries of the type start with prefix
                    422:     create type% %allot >r
                    423:     addr u save-mem r@ type-c-name 2!
                    424:     xt1   r@ type-fetch !
                    425:     xt2   r@ type-store !
                    426:     n     r@ type-size !
                    427:     stack r@ type-stack !
                    428:     rdrop ;
1.1       anton     429: 
1.54      anton     430: : type-prefix ( xt1 xt2 n stack "prefix" -- )
1.50      anton     431:     create-type
                    432: does> ( item -- )
                    433:     \ initialize item
                    434:     { item typ }
                    435:     typ item item-type !
                    436:     typ type-stack @ item item-stack !default
1.75      anton     437:     item item-name 2@ prim prim-items-wordlist @ search-wordlist 0= if
1.66      anton     438:        item item-name 2@ nextname item declare
                    439:        item item-first on
                    440:        \ typ type-c-name 2@ type space type  ." ;" cr
1.50      anton     441:     else
                    442:        drop
1.66      anton     443:        item item-first off
1.50      anton     444:     endif ;
                    445: 
                    446: : execute-prefix ( item addr1 u1 -- )
                    447:     \ execute the word ( item -- ) associated with the longest prefix
                    448:     \ of addr1 u1
                    449:     0 swap ?do
                    450:        dup i prefixes search-wordlist
                    451:        if \ ok, we have the type ( item addr1 xt )
                    452:            nip execute
                    453:            UNLOOP EXIT
                    454:        endif
                    455:        -1 s+loop
                    456:     \ we did not find a type, abort
1.81    ! anton     457:     false s" unknown prefix" ?print-error ;
1.1       anton     458: 
                    459: : declaration ( item -- )
1.50      anton     460:     dup item-name 2@ execute-prefix ;
1.1       anton     461: 
1.64      anton     462: : declaration-list ( addr1 addr2 -- )
                    463:     ['] declaration map-items ;
                    464: 
                    465: : declarations ( -- )
1.75      anton     466:  wordlist dup prim prim-items-wordlist ! set-current
1.69      anton     467:  prim prim-effect-in prim prim-effect-in-end @ declaration-list
                    468:  prim prim-effect-out prim prim-effect-out-end @ declaration-list ;
1.64      anton     469: 
1.66      anton     470: : print-declaration { item -- }
                    471:     item item-first @ if
                    472:        item item-type @ type-c-name 2@ type space
                    473:        item item-name 2@ type ." ;" cr
                    474:     endif ;
                    475: 
                    476: : print-declarations ( -- )
1.69      anton     477:     prim prim-effect-in  prim prim-effect-in-end  @ ['] print-declaration map-items
                    478:     prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
1.66      anton     479:     
1.51      anton     480: : stack-prefix ( stack "prefix" -- )
                    481:     name tuck nextname create ( stack length ) 2,
                    482: does> ( item -- )
                    483:     2@ { item stack prefix-length }
                    484:     item item-name 2@ prefix-length /string item item-name 2!
                    485:     stack item item-stack !
                    486:     item declaration ;
1.73      anton     487: 
1.74      anton     488: \ types pointed to by stacks for use in combined prims
                    489: s" Cell"  single 0 create-type cell-type
                    490: s" Float" single 0 create-type float-type
                    491: 
                    492: s" sp" save-mem cell-type  s" (Cell)" make-stack data-stack 
1.77      anton     493: s" fp" save-mem float-type s" "       make-stack fp-stack
                    494: s" rp" save-mem cell-type  s" (Cell)" make-stack return-stack
1.74      anton     495: s" IP" save-mem cell-type  s" error don't use # on results" make-stack inst-stream
1.73      anton     496: ' inst-in-index inst-stream stack-in-index-xt !
1.80      anton     497: ' inst-stream <is> inst-stream-f
1.73      anton     498: \ !! initialize stack-in and stack-out
1.1       anton     499: 
                    500: \ offset computation
                    501: \ the leftmost (i.e. deepest) item has offset 0
                    502: \ the rightmost item has the highest offset
                    503: 
1.49      anton     504: : compute-offset { item xt -- }
                    505:     \ xt specifies in/out; update stack-in/out and set item-offset
                    506:     item item-type @ type-size @
                    507:     item item-stack @ xt execute dup @ >r +!
                    508:     r> item item-offset ! ;
                    509: 
1.64      anton     510: : compute-offset-in ( addr1 addr2 -- )
                    511:     ['] stack-in compute-offset ;
                    512: 
                    513: : compute-offset-out ( addr1 addr2 -- )
                    514:     ['] stack-out compute-offset ;
1.49      anton     515: 
                    516: : clear-stack { -- }
                    517:     dup stack-in off stack-out off ;
1.1       anton     518: 
                    519: : compute-offsets ( -- )
1.51      anton     520:     data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
1.53      anton     521:     inst-stream clear-stack
1.69      anton     522:     prim prim-effect-in  prim prim-effect-in-end  @ ['] compute-offset-in  map-items
                    523:     prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
1.81    ! anton     524:     inst-stream stack-out @ 0= s" # can only be on the input side" ?print-error ;
        !           525: 
        !           526: : process-simple ( -- )
        !           527:     prim prim { W^ key } key cell
        !           528:     combinations ['] constant wordlist-insert
        !           529:     declarations compute-offsets
        !           530:     output @ execute
        !           531:     1 function-number +! ;
1.49      anton     532: 
                    533: : flush-a-tos { stack -- }
                    534:     stack stack-out @ 0<> stack stack-in @ 0= and
                    535:     if
                    536:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    537:        2dup type ." [0] = " type ." TOS);" cr
                    538:     endif ;
1.1       anton     539: 
                    540: : flush-tos ( -- )
1.51      anton     541:     data-stack   flush-a-tos
                    542:     fp-stack     flush-a-tos
                    543:     return-stack flush-a-tos ;
1.49      anton     544: 
                    545: : fill-a-tos { stack -- }
                    546:     stack stack-out @ 0= stack stack-in @ 0<> and
                    547:     if
                    548:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    549:        2dup type ." TOS = " type ." [0]);" cr
                    550:     endif ;
1.1       anton     551: 
                    552: : fill-tos ( -- )
1.53      anton     553:     \ !! inst-stream for prefetching?
1.51      anton     554:     fp-stack     fill-a-tos
                    555:     data-stack   fill-a-tos
                    556:     return-stack fill-a-tos ;
1.49      anton     557: 
                    558: : fetch ( addr -- )
1.72      anton     559:     dup item-type @ type-fetch @ execute ;
1.1       anton     560: 
                    561: : fetches ( -- )
1.69      anton     562:     prim prim-effect-in prim prim-effect-in-end @ ['] fetch map-items ;
1.49      anton     563: 
                    564: : stack-pointer-update { stack -- }
                    565:     \ stack grow downwards
                    566:     stack stack-in @ stack stack-out @ -
                    567:     ?dup-if \ this check is not necessary, gcc would do this for us
                    568:        stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
                    569:     endif ;
1.1       anton     570: 
1.55      anton     571: : inst-pointer-update ( -- )
                    572:     inst-stream stack-in @ ?dup-if
                    573:        ." INC_IP(" 0 .r ." );" cr
                    574:     endif ;
                    575: 
1.1       anton     576: : stack-pointer-updates ( -- )
1.55      anton     577:     inst-pointer-update
1.51      anton     578:     data-stack   stack-pointer-update
                    579:     fp-stack     stack-pointer-update
                    580:     return-stack stack-pointer-update ;
1.1       anton     581: 
                    582: : store ( item -- )
                    583: \ f is true if the item should be stored
                    584: \ f is false if the store is probably not necessary
1.49      anton     585:  dup item-type @ type-store @ execute ;
1.1       anton     586: 
                    587: : stores ( -- )
1.69      anton     588:     prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
1.8       pazsan    589: 
1.52      anton     590: : output-c-tail ( -- )
                    591:     \ the final part of the generated C code
                    592:     ." NEXT_P1;" cr
                    593:     stores
                    594:     fill-tos
                    595:     ." NEXT_P2;" cr ;
                    596: 
                    597: : type-c ( c-addr u -- )
                    598:     \ like TYPE, but replaces "TAIL;" with tail code
                    599:     begin ( c-addr1 u1 )
                    600:        2dup s" TAIL;" search
                    601:     while ( c-addr1 u1 c-addr3 u3 )
                    602:        2dup 2>r drop nip over - type
                    603:        output-c-tail
                    604:        2r> 5 /string
                    605:        \ !! resync #line missing
                    606:     repeat
                    607:     2drop type ;
1.63      anton     608: 
                    609: : print-debug-arg { item -- }
                    610:     ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
                    611:     ." printarg_" item item-type @ print-type-prefix
                    612:     ." (" item item-name 2@ type ." );" cr ;
                    613:     
                    614: : print-debug-args ( -- )
                    615:     ." #ifdef VM_DEBUG" cr
                    616:     ." if (vm_debug) {" cr
1.69      anton     617:     prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
1.63      anton     618:     ." fputc('\n', vm_out);" cr
                    619:     ." }" cr
                    620:     ." #endif" cr ;
1.72      anton     621: 
                    622: : print-entry ( -- )
                    623:     ." I_" prim prim-c-name 2@ type ." :" ;
1.63      anton     624:     
1.43      jwilke    625: : output-c ( -- ) 
1.72      anton     626:  print-entry ."  /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
1.69      anton     627:  ." /* " prim prim-doc 2@ type ."  */" cr
                    628:  ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
1.1       anton     629:  ." {" cr
                    630:  ." DEF_CA" cr
1.66      anton     631:  print-declarations
1.13      anton     632:  ." NEXT_P0;" cr
                    633:  flush-tos
1.1       anton     634:  fetches
1.63      anton     635:  print-debug-args
1.13      anton     636:  stack-pointer-updates
1.1       anton     637:  ." {" cr
1.63      anton     638:  ." #line " c-line @ . quote c-filename 2@ type quote cr
1.69      anton     639:  prim prim-c-code 2@ type-c
1.1       anton     640:  ." }" cr
1.52      anton     641:  output-c-tail
1.1       anton     642:  ." }" cr
                    643:  cr
                    644: ;
                    645: 
1.56      anton     646: : disasm-arg { item -- }
                    647:     item item-stack @ inst-stream = if
1.63      anton     648:        ."   fputc(' ', vm_out); "
                    649:        ." printarg_" item item-type @ print-type-prefix
                    650:        ." ((" item item-type @ type-c-name 2@ type ." )"
                    651:        ." ip[" item item-offset @ 1+ 0 .r ." ]);" cr
1.56      anton     652:     endif ;
                    653: 
                    654: : disasm-args ( -- )
1.69      anton     655:     prim prim-effect-in prim prim-effect-in-end @ ['] disasm-arg map-items ;
1.56      anton     656: 
                    657: : output-disasm ( -- )
                    658:     \ generate code for disassembling VM instructions
                    659:     ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
1.69      anton     660:     ."   fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
1.56      anton     661:     disasm-args
                    662:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
1.68      anton     663:     ." } else " ;
1.56      anton     664: 
1.60      anton     665: : gen-arg-parm { item -- }
                    666:     item item-stack @ inst-stream = if
                    667:        ." , " item item-type @ type-c-name 2@ type space
                    668:        item item-name 2@ type
                    669:     endif ;
                    670: 
                    671: : gen-args-parm ( -- )
1.69      anton     672:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-parm map-items ;
1.60      anton     673: 
                    674: : gen-arg-gen { item -- }
                    675:     item item-stack @ inst-stream = if
                    676:        ."   genarg_" item item-type @ print-type-prefix
                    677:         ." (ctp, " item item-name 2@ type ." );" cr
                    678:     endif ;
                    679: 
                    680: : gen-args-gen ( -- )
1.69      anton     681:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-gen map-items ;
1.60      anton     682: 
                    683: : output-gen ( -- )
                    684:     \ generate C code for generating VM instructions
1.69      anton     685:     ." void gen_" prim prim-c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
1.60      anton     686:     ." {" cr
                    687:     ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
                    688:     gen-args-gen
1.68      anton     689:     ." }" cr ;
1.60      anton     690: 
1.49      anton     691: : stack-used? { stack -- f }
                    692:     stack stack-in @ stack stack-out @ or 0<> ;
1.44      jwilke    693: 
1.30      pazsan    694: : output-funclabel ( -- )
1.69      anton     695:   ." &I_" prim prim-c-name 2@ type ." ," cr ;
1.30      pazsan    696: 
                    697: : output-forthname ( -- )
1.69      anton     698:   '" emit prim prim-name 2@ type '" emit ." ," cr ;
1.30      pazsan    699: 
                    700: : output-c-func ( -- )
1.44      jwilke    701: \ used for word libraries
1.69      anton     702:     ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
                    703:     ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
                    704:     ." /* " prim prim-doc 2@ type ."  */" cr
                    705:     ." NAME(" quote prim prim-name 2@ type quote ." )" cr
1.30      pazsan    706:     \ debugging
                    707:     ." {" cr
1.66      anton     708:     print-declarations
1.53      anton     709:     inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
1.51      anton     710:     data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
                    711:     fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
                    712:     return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
1.30      pazsan    713:     flush-tos
                    714:     fetches
                    715:     stack-pointer-updates
1.49      anton     716:     fp-stack   stack-used? IF ." *FP=fp;" cr THEN
1.30      pazsan    717:     ." {" cr
1.63      anton     718:     ." #line " c-line @ . quote c-filename 2@ type quote cr
1.69      anton     719:     prim prim-c-code 2@ type
1.30      pazsan    720:     ." }" cr
                    721:     stores
                    722:     fill-tos
1.44      jwilke    723:     ." return (sp);" cr
1.30      pazsan    724:     ." }" cr
                    725:     cr ;
                    726: 
1.43      jwilke    727: : output-label ( -- )  
1.69      anton     728:     ." (Label)&&I_" prim prim-c-name 2@ type ." ," cr ;
1.1       anton     729: 
1.43      jwilke    730: : output-alias ( -- ) 
1.69      anton     731:     ( primitive-number @ . ." alias " ) ." Primitive " prim prim-name 2@ type cr ;
1.1       anton     732: 
1.43      jwilke    733: : output-forth ( -- )  
1.69      anton     734:     prim prim-forth-code @ 0=
1.30      pazsan    735:     IF         \ output-alias
1.28      jwilke    736:        \ this is bad for ec: an alias is compiled if tho word does not exist!
                    737:        \ JAW
1.69      anton     738:     ELSE  ." : " prim prim-name 2@ type ."   ( "
                    739:        prim prim-stack-string 2@ type ." )" cr
                    740:        prim prim-forth-code 2@ type cr
1.30      pazsan    741:     THEN ;
1.10      anton     742: 
1.17      anton     743: : output-tag-file ( -- )
                    744:     name-filename 2@ last-name-filename 2@ compare if
                    745:        name-filename 2@ last-name-filename 2!
                    746:        #ff emit cr
                    747:        name-filename 2@ type
                    748:        ." ,0" cr
                    749:     endif ;
                    750: 
                    751: : output-tag ( -- )
                    752:     output-tag-file
1.69      anton     753:     prim prim-name 2@ 1+ type
1.17      anton     754:     127 emit
1.69      anton     755:     space prim prim-name 2@ type space
1.17      anton     756:     1 emit
                    757:     name-line @ 0 .r
                    758:     ." ,0" cr ;
                    759: 
1.10      anton     760: [IFDEF] documentation
                    761: : register-doc ( -- )
                    762:     get-current documentation set-current
1.69      anton     763:     prim prim-name 2@ nextname create
                    764:     prim prim-name 2@ 2,
                    765:     prim prim-stack-string 2@ condition-stack-effect 2,
                    766:     prim prim-wordset 2@ 2,
                    767:     prim prim-c-name 2@ condition-pronounciation 2,
                    768:     prim prim-doc 2@ 2,
1.10      anton     769:     set-current ;
                    770: [THEN]
1.67      anton     771: 
                    772: 
1.69      anton     773: \ combining instructions
                    774: 
                    775: \ The input should look like this:
                    776: 
                    777: \ lit_+ = lit +
                    778: 
                    779: \ The output should look like this:
                    780: 
                    781: \  I_lit_+:
                    782: \  {
                    783: \  DEF_CA
                    784: \  Cell _x_ip0;
                    785: \  Cell _x_sp0;
                    786: \  Cell _x_sp1;
                    787: \  NEXT_P0;
                    788: \  _x_ip0 = (Cell) IPTOS;
                    789: \  _x_sp0 = (Cell) spTOS;
                    790: \  INC_IP(1);
                    791: \  /* sp += 0; */
                    792: \  /* lit ( #w -- w ) */
                    793: \  /*  */
                    794: \  NAME("lit")
                    795: \  {
                    796: \  Cell w;
                    797: \  w = (Cell) _x_ip0;
                    798: \  #ifdef VM_DEBUG
                    799: \  if (vm_debug) {
                    800: \  fputs(" w=", vm_out); printarg_w (w);
                    801: \  fputc('\n', vm_out);
                    802: \  }
                    803: \  #endif
                    804: \  {
                    805: \  #line 136 "./prim"
                    806: \  }
                    807: \  _x_sp1 = (Cell)w;
                    808: \  }
                    809: \  I_plus:     /* + ( n1 n2 -- n ) */
                    810: \  /*  */
                    811: \  NAME("+")
                    812: \  {
                    813: \  DEF_CA
                    814: \  Cell n1;
                    815: \  Cell n2;
                    816: \  Cell n;
                    817: \  NEXT_P0;
                    818: \  n1 = (Cell) _x_sp0;
                    819: \  n2 = (Cell) _x_sp1;
                    820: \  #ifdef VM_DEBUG
                    821: \  if (vm_debug) {
                    822: \  fputs(" n1=", vm_out); printarg_n (n1);
                    823: \  fputs(" n2=", vm_out); printarg_n (n2);
                    824: \  fputc('\n', vm_out);
                    825: \  }
                    826: \  #endif
                    827: \  {
                    828: \  #line 516 "./prim"
                    829: \  n = n1+n2;
                    830: \  }
                    831: \  NEXT_P1;
                    832: \  _x_sp0 = (Cell)n;
                    833: \  NEXT_P2;
                    834: \  }
                    835: \  NEXT_P1;
                    836: \  spTOS = (Cell)_x_sp0;
                    837: \  NEXT_P2;
                    838: 
1.71      anton     839: : init-combined ( -- )
1.79      anton     840:     prim to combined
1.71      anton     841:     0 num-combined !
                    842:     current-depth max-stacks cells erase
1.72      anton     843:     max-depth     max-stacks cells erase
                    844:     min-depth     max-stacks cells erase
                    845:     prim prim-effect-in  prim prim-effect-in-end  !
                    846:     prim prim-effect-out prim prim-effect-out-end ! ;
1.71      anton     847: 
                    848: : max! ( n addr -- )
                    849:     tuck @ max swap ! ;
                    850: 
1.72      anton     851: : min! ( n addr -- )
                    852:     tuck @ min swap ! ;
                    853: 
1.71      anton     854: : add-depths { p -- }
                    855:     \ combine stack effect of p with *-depths
                    856:     max-stacks 0 ?do
1.72      anton     857:        current-depth i th @
                    858:        p prim-stacks-in  i th @ +
                    859:        dup max-depth i th max!
                    860:        p prim-stacks-out i th @ -
                    861:        dup min-depth i th min!
                    862:        current-depth i th !
1.71      anton     863:     loop ;
                    864: 
                    865: : add-prim ( addr u -- )
                    866:     \ add primitive given by "addr u" to combined-prims
                    867:     primitives search-wordlist s" unknown primitive" ?print-error
                    868:     execute { p }
1.72      anton     869:     p combined-prims num-combined @ th !
1.71      anton     870:     1 num-combined +!
                    871:     p add-depths ;
                    872: 
                    873: : compute-effects { q -- }
                    874:     \ compute the stack effects of q from the depths
                    875:     max-stacks 0 ?do
1.72      anton     876:        max-depth i th @ dup
                    877:        q prim-stacks-in i th !
                    878:        current-depth i th @ -
                    879:        q prim-stacks-out i th !
                    880:     loop ;
                    881: 
                    882: : make-effect-items { stack# items effect-endp -- }
                    883:     \ effect-endp points to a pointer to the end of the current item-array
                    884:     \ and has to be updated
                    885:     stacks stack# th @ { stack }
                    886:     items 0 +do
                    887:        effect-endp @ { item }
                    888:        i 0 <# #s stack stack-pointer 2@ holds [char] _ hold #> save-mem
                    889:        item item-name 2!
                    890:        stack item item-stack !
1.74      anton     891:        stack stack-type @ item item-type !
1.72      anton     892:        i item item-offset !
                    893:        item item-first on
                    894:        item% %size effect-endp +!
                    895:     loop ;
                    896: 
                    897: : init-effects { q -- }
                    898:     \ initialize effects field for FETCHES and STORES
                    899:     max-stacks 0 ?do
                    900:        i q prim-stacks-in  i th @ q prim-effect-in-end  make-effect-items
                    901:        i q prim-stacks-out i th @ q prim-effect-out-end make-effect-items
1.71      anton     902:     loop ;
                    903: 
                    904: : process-combined ( -- )
1.81    ! anton     905:     combined combined-prims num-combined @ cells
        !           906:     combinations ['] constant wordlist-insert
1.72      anton     907:     prim compute-effects
                    908:     prim init-effects
                    909:     output-combined perform ;
                    910: 
                    911: \ C output
                    912: 
                    913: : print-item { n stack -- }
                    914:     \ print nth stack item name
1.79      anton     915:     stack stack-type @ type-c-name 2@ type space
                    916:     ." _" stack stack-pointer 2@ type n 0 .r ;
1.72      anton     917: 
                    918: : print-declarations-combined ( -- )
                    919:     max-stacks 0 ?do
                    920:        max-depth i th @ min-depth i th @ - 0 +do
                    921:            i stacks j th @ print-item ." ;" cr
                    922:        loop
                    923:     loop ;
1.79      anton     924: 
                    925: : part-fetches ( -- )
                    926:     fetches ;
                    927: 
                    928: : part-output-c-tail ( -- )
                    929:     output-c-tail ;
                    930: 
                    931: : output-part ( p -- )
                    932:     to prim
                    933:     ." /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
                    934:     ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
                    935:     ." {" cr
                    936:     print-declarations
                    937:     part-fetches
                    938:     print-debug-args
                    939:     prim add-depths \ !! right place?
                    940:     ." {" cr
                    941:     ." #line " c-line @ . quote c-filename 2@ type quote cr
                    942:     prim prim-c-code 2@ type-c \ !! deal with TAIL
                    943:     ." }" cr
                    944:     part-output-c-tail
                    945:     ." }" cr ;
                    946: 
1.74      anton     947: : output-parts ( -- )
1.79      anton     948:     prim >r in-part on
                    949:     current-depth max-stacks cells erase
1.74      anton     950:     num-combined @ 0 +do
1.79      anton     951:        combined-prims i th @ output-part
1.74      anton     952:     loop
1.79      anton     953:     in-part off
1.74      anton     954:     r> to prim ;
                    955: 
1.72      anton     956: : output-c-combined ( -- )
                    957:     print-entry cr
1.74      anton     958:     \ debugging messages just in parts
1.72      anton     959:     ." {" cr
                    960:     ." DEF_CA" cr
                    961:     print-declarations-combined
                    962:     ." NEXT_P0;" cr
                    963:     flush-tos
                    964:     fetches
1.74      anton     965:     \ print-debug-args
                    966:     stack-pointer-updates
                    967:     output-parts
                    968:     output-c-tail
                    969:     ." }" cr
                    970:     cr ;
1.72      anton     971: 
                    972: : output-forth-combined ( -- )
1.81    ! anton     973: ;
        !           974: 
        !           975: 
        !           976: \ compile VM insts
        !           977: 
        !           978: \ in order for this to work as intended, shorter combinations for each
        !           979: \ length must be present, and the longer combinations must follow
        !           980: \ shorter ones (this restriction may go away in the future).
        !           981:   
        !           982: : output-pregen-combined ( -- )
        !           983:     combined-prims num-combined @ 1- cells combinations search-wordlist
        !           984:     s" the prefix for this combination must be defined earlier" ?print-error
        !           985:     execute prim-c-name 2@ type space
        !           986:     combined-prims num-combined @ 1- th @ prim-c-name 2@ type ."  -> "
        !           987:     combined prim-c-name 2@ type cr ;
1.69      anton     988: 
1.67      anton     989: \ the parser
                    990: 
                    991: eof-char max-member \ the whole character set + EOF
                    992: 
                    993: : getinput ( -- n )
                    994:  rawinput @ endrawinput @ =
                    995:  if
                    996:    eof-char
                    997:  else
                    998:    cookedinput @ c@
                    999:  endif ;
                   1000: 
                   1001: :noname ( n -- )
                   1002:  dup bl > if
                   1003:   emit space
                   1004:  else
                   1005:   .
                   1006:  endif ;
                   1007: print-token !
                   1008: 
                   1009: : testchar? ( set -- f )
                   1010:  getinput member? ;
                   1011: ' testchar? test-vector !
                   1012: 
                   1013: : checksyncline ( -- )
                   1014:     \ when input points to a newline, check if the next line is a
                   1015:     \ sync line.  If it is, perform the appropriate actions.
                   1016:     rawinput @ >r
                   1017:     s" #line " r@ over compare 0<> if
                   1018:        rdrop 1 line +! EXIT
                   1019:     endif
                   1020:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
                   1021:     dup c@ bl = if
1.81    ! anton    1022:        char+ dup c@ [char] " <> 0= s" sync line syntax" ?print-error
1.67      anton    1023:        char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
                   1024:        char+
                   1025:     endif
1.81    ! anton    1026:     dup c@ nl-char <> 0= s" sync line syntax" ?print-error
1.67      anton    1027:     skipsynclines @ if
                   1028:        dup char+ rawinput !
                   1029:        rawinput @ c@ cookedinput @ c!
                   1030:     endif
                   1031:     drop ;
                   1032: 
                   1033: : ?nextchar ( f -- )
1.71      anton    1034:     s" syntax error, wrong char" ?print-error
1.67      anton    1035:     rawinput @ endrawinput @ <> if
                   1036:        rawinput @ c@
                   1037:        1 chars rawinput +!
                   1038:        1 chars cookedinput +!
                   1039:        nl-char = if
                   1040:            checksyncline
                   1041:            rawinput @ line-start !
                   1042:        endif
                   1043:        rawinput @ c@ cookedinput @ c!
                   1044:     endif ;
                   1045: 
                   1046: : charclass ( set "name" -- )
                   1047:  ['] ?nextchar terminal ;
                   1048: 
                   1049: : .. ( c1 c2 -- set )
                   1050:  ( creates a set that includes the characters c, c1<=c<=c2 )
                   1051:  empty copy-set
                   1052:  swap 1+ rot do
                   1053:   i over add-member
                   1054:  loop ;
                   1055: 
                   1056: : ` ( -- terminal ) ( use: ` c )
                   1057:  ( creates anonymous terminal for the character c )
                   1058:  char singleton ['] ?nextchar make-terminal ;
                   1059: 
                   1060: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
                   1061: char 0 char 9 ..                                       charclass digit
                   1062: bl singleton tab-char over add-member                  charclass white
                   1063: nl-char singleton eof-char over add-member complement  charclass nonl
                   1064: nl-char singleton eof-char over add-member
                   1065:     char : over add-member complement                   charclass nocolonnl
                   1066: bl 1+ maxchar .. char \ singleton complement intersection
                   1067:                                                         charclass nowhitebq
                   1068: bl 1+ maxchar ..                                        charclass nowhite
                   1069: char " singleton eof-char over add-member complement   charclass noquote
                   1070: nl-char singleton                                      charclass nl
                   1071: eof-char singleton                                     charclass eof
1.79      anton    1072: nl-char singleton eof-char over add-member             charclass nleof
1.67      anton    1073: 
                   1074: (( letter (( letter || digit )) **
                   1075: )) <- c-ident ( -- )
                   1076: 
                   1077: (( ` # ?? (( letter || digit || ` : )) **
                   1078: )) <- stack-ident ( -- )
                   1079: 
                   1080: (( nowhitebq nowhite ** ))
                   1081: <- forth-ident ( -- )
                   1082: 
                   1083: Variable forth-flag
                   1084: Variable c-flag
                   1085: 
                   1086: (( (( ` e || ` E )) {{ start }} nonl ** 
                   1087:    {{ end evaluate }}
                   1088: )) <- eval-comment ( ... -- ... )
                   1089: 
                   1090: (( (( ` f || ` F )) {{ start }} nonl ** 
                   1091:    {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
                   1092: )) <- forth-comment ( -- )
                   1093: 
                   1094: (( (( ` c || ` C )) {{ start }} nonl ** 
                   1095:    {{ end c-flag @ IF type cr ELSE 2drop THEN }}
                   1096: )) <- c-comment ( -- )
                   1097: 
                   1098: (( ` - nonl ** {{ 
                   1099:        forth-flag @ IF ." [ELSE]" cr THEN
                   1100:        c-flag @ IF ." #else" cr THEN }}
                   1101: )) <- else-comment
                   1102: 
                   1103: (( ` + {{ start }} nonl ** {{ end
                   1104:        dup
                   1105:        IF      c-flag @
                   1106:                IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
                   1107:                THEN
                   1108:                forth-flag @
                   1109:                IF  ." has? " type ."  [IF]"  cr THEN
                   1110:        ELSE    2drop
                   1111:            c-flag @      IF  ." #endif"  cr THEN
                   1112:            forth-flag @  IF  ." [THEN]"  cr THEN
                   1113:        THEN }}
                   1114: )) <- if-comment
                   1115: 
                   1116: (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
                   1117: 
1.79      anton    1118: (( ` \ comment-body nleof )) <- comment ( -- )
1.67      anton    1119: 
                   1120: (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
                   1121: <- stack-items
                   1122: 
1.69      anton    1123: (( {{ prim prim-effect-in }}  stack-items {{ prim prim-effect-in-end ! }}
1.67      anton    1124:    ` - ` - white **
1.69      anton    1125:    {{ prim prim-effect-out }} stack-items {{ prim prim-effect-out-end ! }}
1.67      anton    1126: )) <- stack-effect ( -- )
                   1127: 
1.71      anton    1128: (( {{ prim create-prim }}
1.69      anton    1129:    ` ( white ** {{ start }} stack-effect {{ end prim prim-stack-string 2! }} ` ) white **
                   1130:    (( {{ start }} forth-ident {{ end prim prim-wordset 2! }} white **
                   1131:       (( {{ start }}  c-ident {{ end prim prim-c-name 2! }} )) ??
1.79      anton    1132:    )) ??  nleof
                   1133:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- prim prim-doc 2! }} ` " white ** nleof )) ??
                   1134:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nleof white ** )) ** {{ end prim prim-c-code 2! skipsynclines on }}
                   1135:    (( ` :  white ** nleof
                   1136:       {{ start }} (( nonl ++  nleof white ** )) ++ {{ end prim prim-forth-code 2! }}
1.81    ! anton    1137:    )) ?? {{ process-simple }}
1.79      anton    1138:    nleof
1.69      anton    1139: )) <- simple-primitive ( -- )
                   1140: 
1.71      anton    1141: (( {{ init-combined }}
                   1142:    ` = (( white ++ {{ start }} forth-ident {{ end add-prim }} )) ++
1.79      anton    1143:    nleof {{ process-combined }}
1.69      anton    1144: )) <- combined-primitive
                   1145: 
1.79      anton    1146: (( {{ make-prim to prim 0 to combined
1.69      anton    1147:       line @ name-line ! filename 2@ name-filename 2!
                   1148:       start }} forth-ident {{ end 2dup prim prim-name 2! prim prim-c-name 2! }}  white ++
                   1149:    (( simple-primitive || combined-primitive ))
1.67      anton    1150: )) <- primitive ( -- )
                   1151: 
                   1152: (( (( comment || primitive || nl white ** )) ** eof ))
                   1153: parser primitives2something
                   1154: warnings @ [IF]
                   1155: .( parser generated ok ) cr
                   1156: [THEN]
                   1157: 
1.69      anton    1158: : primfilter ( addr u -- )
                   1159:     \ process the string at addr u
                   1160:     over dup rawinput ! dup line-start ! cookedinput !
                   1161:     + endrawinput !
                   1162:     checksyncline
                   1163:     primitives2something ;    
1.8       pazsan   1164: 
1.72      anton    1165: : process-file ( addr u xt-simple x-combined -- )
                   1166:     output-combined ! output !
1.61      anton    1167:     save-mem 2dup filename 2!
1.69      anton    1168:     slurp-file
1.17      anton    1169:     warnings @ if
                   1170:        ." ------------ CUT HERE -------------" cr  endif
1.69      anton    1171:     primfilter ;
1.30      pazsan   1172: 
1.72      anton    1173: \  : process      ( xt -- )
                   1174: \      bl word count rot
                   1175: \      process-file ;

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