Annotation of gforth/prims2x.fs, revision 1.104

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: 
1.97      jwilke     56: [IFUNDEF] try
                     57: include startup.fs
                     58: [THEN]
                     59: 
1.49      anton      60: : struct% struct ; \ struct is redefined in gray
                     61: 
1.98      pazsan     62: warnings off
                     63: 
1.39      jwilke     64: include ./gray.fs
1.1       anton      65: 
1.69      anton      66: 32 constant max-effect \ number of things on one side of a stack effect
1.71      anton      67: 4 constant max-stacks  \ the max. number of stacks (including inst-stream).
1.1       anton      68: 255 constant maxchar
                     69: maxchar 1+ constant eof-char
1.17      anton      70: #tab constant tab-char
                     71: #lf constant nl-char
1.1       anton      72: 
1.18      anton      73: variable rawinput \ pointer to next character to be scanned
                     74: variable endrawinput \ pointer to the end of the input (the char after the last)
                     75: variable cookedinput \ pointer to the next char to be parsed
1.17      anton      76: variable line \ line number of char pointed to by input
1.65      anton      77: variable line-start \ pointer to start of current line (for error messages)
                     78: 0 line !
1.17      anton      79: 2variable filename \ filename of original input file
                     80: 0 0 filename 2!
1.25      pazsan     81: 2variable f-comment
                     82: 0 0 f-comment 2!
1.17      anton      83: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
                     84: skipsynclines on 
1.1       anton      85: 
1.72      anton      86: : th ( addr1 n -- addr2 )
                     87:     cells + ;
                     88: 
                     89: : holds ( addr u -- )
                     90:     \ like HOLD, but for a string
                     91:     tuck + swap 0 +do
                     92:        1- dup c@ hold
                     93:     loop
                     94:     drop ;
1.71      anton      95: 
1.82      anton      96: : insert-wordlist { c-addr u wordlist xt -- }
1.81      anton      97:     \ adds name "addr u" to wordlist using defining word xt
                     98:     \ xt may cause additional stack effects
                     99:     get-current >r wordlist set-current
                    100:     c-addr u nextname xt execute
                    101:     r> set-current ;
                    102: 
1.1       anton     103: : start ( -- addr )
1.18      anton     104:  cookedinput @ ;
1.1       anton     105: 
                    106: : end ( addr -- addr u )
1.18      anton     107:  cookedinput @ over - ;
1.1       anton     108: 
1.71      anton     109: : print-error-line ( -- )
                    110:     \ print the current line and position
                    111:     line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )
                    112:     over - type cr
                    113:     line-start @ rawinput @ over - typewhite ." ^" cr ;
                    114: 
                    115: : ?print-error { f addr u -- }
                    116:     f ?not? if
                    117:        outfile-id >r try
                    118:            stderr to outfile-id
                    119:            filename 2@ type ." :" line @ 0 .r ." : " addr u type cr
                    120:            print-error-line
                    121:            0
                    122:        recover endtry
                    123:        r> to outfile-id throw
                    124:        abort
                    125:     endif ;
                    126: 
1.63      anton     127: : quote ( -- )
                    128:     [char] " emit ;
                    129: 
1.72      anton     130: variable output          \ xt ( -- ) of output word for simple primitives
                    131: variable output-combined \ xt ( -- ) of output word for combined primitives
1.1       anton     132: 
1.49      anton     133: struct%
1.71      anton     134:     cell%    field stack-number \ the number of this stack
1.49      anton     135:     cell% 2* field stack-pointer \ stackpointer name
1.74      anton     136:     cell%    field stack-type \ name for default type of stack items
1.53      anton     137:     cell%    field stack-in-index-xt \ ( in-size item -- in-index )
1.49      anton     138: end-struct stack%
                    139: 
1.53      anton     140: struct%
                    141:  cell% 2* field item-name   \ name, excluding stack prefixes
                    142:  cell%    field item-stack  \ descriptor for the stack used, 0 is default
                    143:  cell%    field item-type   \ descriptor for the item type
                    144:  cell%    field item-offset \ offset in stack items, 0 for the deepest element
1.66      anton     145:  cell%   field item-first  \ true if this is the first occurence of the item
1.53      anton     146: end-struct item%
                    147: 
                    148: struct%
                    149:     cell% 2* field type-c-name
                    150:     cell%    field type-stack \ default stack
                    151:     cell%    field type-size  \ size of type in stack items
                    152:     cell%    field type-fetch \ xt of fetch code generator ( item -- )
                    153:     cell%    field type-store \ xt of store code generator ( item -- )
                    154: end-struct type%
                    155: 
1.72      anton     156: variable next-stack-number 0 next-stack-number !
                    157: create stacks max-stacks cells allot \ array of stacks
                    158: 
1.53      anton     159: : stack-in-index ( in-size item -- in-index )
                    160:     item-offset @ - 1- ;
                    161: 
                    162: : inst-in-index ( in-size item -- in-index )
                    163:     nip dup item-offset @ swap item-type @ type-size @ + 1- ;
                    164: 
1.92      anton     165: : make-stack ( addr-ptr u1 type "stack-name" -- )
                    166:     next-stack-number @ max-stacks < s" too many stacks" ?print-error
1.49      anton     167:     create stack% %allot >r
1.72      anton     168:     r@ stacks next-stack-number @ th !
1.92      anton     169:     next-stack-number @ r@ stack-number !
                    170:     1 next-stack-number +!
1.74      anton     171:     r@ stack-type !
1.53      anton     172:     save-mem r@ stack-pointer 2! 
                    173:     ['] stack-in-index r> stack-in-index-xt ! ;
1.49      anton     174: 
1.92      anton     175: : map-stacks { xt -- }
                    176:     \ perform xt for all stacks except inst-stream
                    177:     next-stack-number @ 1 +do
                    178:        stacks i th @ xt execute
                    179:     loop ;
                    180: 
1.49      anton     181: \ stack items
                    182: 
                    183: : init-item ( addr u addr1 -- )
                    184:     \ initialize item at addr1 with name addr u
                    185:     \ !! remove stack prefix
                    186:     dup item% %size erase
                    187:     item-name 2! ;
                    188: 
1.64      anton     189: : map-items { addr end xt -- }
                    190:     \ perform xt for all items in array addr...end
                    191:     end addr ?do
                    192:        i xt execute
                    193:     item% %size +loop ;
                    194: 
1.77      anton     195: \ types
                    196: 
                    197: : print-type-prefix ( type -- )
                    198:     body> >head name>string type ;
                    199: 
1.49      anton     200: \ various variables for storing stuff of one primitive
1.1       anton     201: 
1.69      anton     202: struct%
                    203:     cell% 2* field prim-name
                    204:     cell% 2* field prim-wordset
                    205:     cell% 2* field prim-c-name
                    206:     cell% 2* field prim-doc
                    207:     cell% 2* field prim-c-code
                    208:     cell% 2* field prim-forth-code
                    209:     cell% 2* field prim-stack-string
1.82      anton     210:     cell%    field prim-num            \ ordinal number
1.75      anton     211:     cell%    field prim-items-wordlist \ unique items
1.69      anton     212:     item% max-effect * field prim-effect-in
                    213:     item% max-effect * field prim-effect-out
                    214:     cell%    field prim-effect-in-end
                    215:     cell%    field prim-effect-out-end
1.71      anton     216:     cell% max-stacks * field prim-stacks-in  \ number of in items per stack
                    217:     cell% max-stacks * field prim-stacks-out \ number of out items per stack
1.69      anton     218: end-struct prim%
                    219: 
1.70      anton     220: : make-prim ( -- prim )
                    221:     prim% %alloc { p }
                    222:     s" " p prim-doc 2! s" " p prim-forth-code 2! s" " p prim-wordset 2!
                    223:     p ;
                    224: 
1.79      anton     225: 0 value prim     \ in combined prims either combined or a part
                    226: 0 value combined \ in combined prims the combined prim
                    227: variable in-part \ true if processing a part
                    228:  in-part off
                    229: 
                    230: 1000 constant max-combined
                    231: create combined-prims max-combined cells allot
                    232: variable num-combined
                    233: 
1.81      anton     234: table constant combinations
                    235:   \ the keys are the sequences of pointers to primitives
                    236: 
1.79      anton     237: create current-depth max-stacks cells allot
                    238: create max-depth     max-stacks cells allot
                    239: create min-depth     max-stacks cells allot
1.69      anton     240: 
1.71      anton     241: wordlist constant primitives
                    242: 
                    243: : create-prim ( prim -- )
1.82      anton     244:     dup prim-name 2@ primitives ['] constant insert-wordlist ;
1.71      anton     245: 
                    246: : stack-in ( stack -- addr )
                    247:     \ address of number of stack items in effect in
                    248:     stack-number @ cells prim prim-stacks-in + ;
                    249: 
                    250: : stack-out ( stack -- addr )
                    251:     \ address of number of stack items in effect out
                    252:     stack-number @ cells prim prim-stacks-out + ;
                    253: 
1.69      anton     254: \ global vars
1.17      anton     255: variable c-line
                    256: 2variable c-filename
                    257: variable name-line
                    258: 2variable name-filename
                    259: 2variable last-name-filename
1.30      pazsan    260: Variable function-number 0 function-number !
1.1       anton     261: 
                    262: \ a few more set ops
                    263: 
                    264: : bit-equivalent ( w1 w2 -- w3 )
                    265:  xor invert ;
                    266: 
                    267: : complement ( set1 -- set2 )
                    268:  empty ['] bit-equivalent binary-set-operation ;
                    269: 
1.80      anton     270: \ stack access stuff
1.79      anton     271: 
                    272: : normal-stack-access ( n stack -- )
1.49      anton     273:     stack-pointer 2@ type
                    274:     dup
                    275:     if
                    276:        ." [" 0 .r ." ]"
                    277:     else
                    278:        drop ." TOS"
                    279:     endif ;
1.1       anton     280: 
1.80      anton     281: \ forward declaration for inst-stream (breaks cycle in definitions)
                    282: defer inst-stream-f ( -- stack )
                    283: 
1.79      anton     284: : part-stack-access { n stack -- }
1.80      anton     285:     \ print _<stack><x>, x=inst-stream? n : maxdepth-currentdepth-n-1
1.79      anton     286:     ." _" stack stack-pointer 2@ type
                    287:     stack stack-number @ { stack# }
1.80      anton     288:     current-depth stack# th @ n + { access-depth }
                    289:     stack inst-stream-f = if
                    290:        access-depth
                    291:     else
                    292:        combined prim-stacks-in stack# th @
                    293:        assert( dup max-depth stack# th @ = )
                    294:        access-depth - 1-
                    295:     endif
1.79      anton     296:     0 .r ;
                    297: 
                    298: : stack-access ( n stack -- )
                    299:     \ print a stack access at index n of stack
                    300:     in-part @ if
                    301:        part-stack-access
                    302:     else
                    303:        normal-stack-access
                    304:     endif ;
                    305: 
1.53      anton     306: : item-in-index { item -- n }
1.49      anton     307:     \ n is the index of item (in the in-effect)
1.53      anton     308:     item item-stack @ dup >r stack-in @ ( in-size r:stack )
                    309:     item r> stack-in-index-xt @ execute ;
1.1       anton     310: 
1.78      anton     311: : item-stack-type-name ( item -- addr u )
                    312:     item-stack @ stack-type @ type-c-name 2@ ;
                    313: 
1.1       anton     314: : fetch-single ( item -- )
1.49      anton     315:  \ fetch a single stack item from its stack
1.1       anton     316:  >r
1.8       pazsan    317:  r@ item-name 2@ type
1.78      anton     318:  ."  = vm_" r@ item-stack-type-name type
1.77      anton     319:  ." 2" r@ item-type @ print-type-prefix ." ("
1.49      anton     320:  r@ item-in-index r@ item-stack @ stack-access
1.77      anton     321:  ." );" cr
1.1       anton     322:  rdrop ; 
                    323: 
                    324: : fetch-double ( item -- )
1.49      anton     325:  \ fetch a double stack item from its stack
1.1       anton     326:  >r
1.78      anton     327:  ." vm_two"
                    328:  r@ item-stack-type-name type ." 2"
                    329:  r@ item-type @ print-type-prefix ." ("
1.20      anton     330:  r@ item-name 2@ type ." , "
1.61      anton     331:  r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
                    332:  ." , "                      -1 under+ ." (Cell)" stack-access
1.20      anton     333:  ." );" cr
1.1       anton     334:  rdrop ;
                    335: 
1.49      anton     336: : same-as-in? ( item -- f )
                    337:  \ f is true iff the offset and stack of item is the same as on input
1.1       anton     338:  >r
1.74      anton     339:  r@ item-first @ if
                    340:      rdrop false exit
                    341:  endif
1.75      anton     342:  r@ item-name 2@ prim prim-items-wordlist @ search-wordlist 0= abort" bug"
1.1       anton     343:  execute @
                    344:  dup r@ =
                    345:  if \ item first appeared in output
                    346:    drop false
                    347:  else
1.49      anton     348:    dup  item-stack  @ r@ item-stack  @ = 
                    349:    swap item-offset @ r@ item-offset @ = and
1.1       anton     350:  endif
                    351:  rdrop ;
                    352: 
1.49      anton     353: : item-out-index ( item -- n )
                    354:     \ n is the index of item (in the in-effect)
                    355:     >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
1.31      pazsan    356: 
1.1       anton     357: : really-store-single ( item -- )
                    358:  >r
1.77      anton     359:  r@ item-out-index r@ item-stack @ stack-access ."  = vm_"
                    360:  r@ item-type @ print-type-prefix ." 2"
1.78      anton     361:  r@ item-stack-type-name type ." ("
1.77      anton     362:  r@ item-name 2@ type ." );"
1.1       anton     363:  rdrop ;
                    364: 
                    365: : store-single ( item -- )
                    366:  >r
1.49      anton     367:  r@ same-as-in?
1.1       anton     368:  if
1.49      anton     369:    r@ item-in-index 0= r@ item-out-index 0= xor
1.1       anton     370:    if
1.49      anton     371:        ." IF_" r@ item-stack @ stack-pointer 2@ type
                    372:        ." TOS(" r@ really-store-single ." );" cr
1.1       anton     373:    endif
                    374:  else
                    375:    r@ really-store-single cr
                    376:  endif
                    377:  rdrop ;
                    378: 
                    379: : store-double ( item -- )
                    380: \ !! store optimization is not performed, because it is not yet needed
                    381:  >r
1.78      anton     382:  ." vm_"
                    383:  r@ item-type @ print-type-prefix ." 2two"
                    384:  r@ item-stack-type-name type ." ("
                    385:  r@ item-name 2@ type ." , "
1.49      anton     386:  r@ item-out-index r@ item-stack @ 2dup stack-access
                    387:  ." , "                       -1 under+ stack-access
1.20      anton     388:  ." );" cr
1.1       anton     389:  rdrop ;
                    390: 
1.54      anton     391: : single ( -- xt1 xt2 n )
                    392:     ['] fetch-single ['] store-single 1 ;
1.1       anton     393: 
1.54      anton     394: : double ( -- xt1 xt2 n )
                    395:     ['] fetch-double ['] store-double 2 ;
1.1       anton     396: 
                    397: : s, ( addr u -- )
                    398: \ allocate a string
                    399:  here swap dup allot move ;
                    400: 
1.50      anton     401: wordlist constant prefixes
                    402: 
                    403: : declare ( addr "name" -- )
                    404: \ remember that there is a stack item at addr called name
                    405:  create , ;
                    406: 
                    407: : !default ( w addr -- )
                    408:     dup @ if
                    409:        2drop \ leave nonzero alone
                    410:     else
                    411:        !
                    412:     endif ;
                    413: 
                    414: : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
1.49      anton     415:     \ describes a type
                    416:     \ addr u specifies the C type name
                    417:     \ stack effect entries of the type start with prefix
                    418:     create type% %allot >r
                    419:     addr u save-mem r@ type-c-name 2!
                    420:     xt1   r@ type-fetch !
                    421:     xt2   r@ type-store !
                    422:     n     r@ type-size !
                    423:     stack r@ type-stack !
                    424:     rdrop ;
1.1       anton     425: 
1.54      anton     426: : type-prefix ( xt1 xt2 n stack "prefix" -- )
1.94      anton     427:     get-current >r prefixes set-current
                    428:     create-type r> set-current
1.50      anton     429: does> ( item -- )
                    430:     \ initialize item
                    431:     { item typ }
                    432:     typ item item-type !
                    433:     typ type-stack @ item item-stack !default
1.75      anton     434:     item item-name 2@ prim prim-items-wordlist @ search-wordlist 0= if
1.66      anton     435:        item item-name 2@ nextname item declare
                    436:        item item-first on
                    437:        \ typ type-c-name 2@ type space type  ." ;" cr
1.50      anton     438:     else
                    439:        drop
1.66      anton     440:        item item-first off
1.50      anton     441:     endif ;
                    442: 
                    443: : execute-prefix ( item addr1 u1 -- )
                    444:     \ execute the word ( item -- ) associated with the longest prefix
                    445:     \ of addr1 u1
                    446:     0 swap ?do
                    447:        dup i prefixes search-wordlist
                    448:        if \ ok, we have the type ( item addr1 xt )
                    449:            nip execute
                    450:            UNLOOP EXIT
                    451:        endif
                    452:        -1 s+loop
                    453:     \ we did not find a type, abort
1.81      anton     454:     false s" unknown prefix" ?print-error ;
1.1       anton     455: 
                    456: : declaration ( item -- )
1.50      anton     457:     dup item-name 2@ execute-prefix ;
1.1       anton     458: 
1.64      anton     459: : declaration-list ( addr1 addr2 -- )
                    460:     ['] declaration map-items ;
                    461: 
                    462: : declarations ( -- )
1.75      anton     463:  wordlist dup prim prim-items-wordlist ! set-current
1.69      anton     464:  prim prim-effect-in prim prim-effect-in-end @ declaration-list
                    465:  prim prim-effect-out prim prim-effect-out-end @ declaration-list ;
1.64      anton     466: 
1.66      anton     467: : print-declaration { item -- }
                    468:     item item-first @ if
                    469:        item item-type @ type-c-name 2@ type space
                    470:        item item-name 2@ type ." ;" cr
                    471:     endif ;
                    472: 
                    473: : print-declarations ( -- )
1.69      anton     474:     prim prim-effect-in  prim prim-effect-in-end  @ ['] print-declaration map-items
                    475:     prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
1.66      anton     476:     
1.51      anton     477: : stack-prefix ( stack "prefix" -- )
1.94      anton     478:     get-current >r prefixes set-current
1.51      anton     479:     name tuck nextname create ( stack length ) 2,
1.94      anton     480:     r> set-current
1.51      anton     481: does> ( item -- )
                    482:     2@ { item stack prefix-length }
                    483:     item item-name 2@ prefix-length /string item item-name 2!
                    484:     stack item item-stack !
                    485:     item declaration ;
1.73      anton     486: 
1.74      anton     487: \ types pointed to by stacks for use in combined prims
1.83      anton     488: \ !! output-c-combined shouldn't use these names!
1.92      anton     489: : stack-type-name ( addr u "name" -- )
                    490:     single 0 create-type ;
                    491: 
1.93      anton     492: wordlist constant type-names \ this is here just to meet the requirement
                    493:                     \ that a type be a word; it is never used for lookup
1.83      anton     494: 
1.93      anton     495: : stack ( "name" "stack-pointer" "type" -- )
                    496:     \ define stack
                    497:     name { d: stack-name }
                    498:     name { d: stack-pointer }
                    499:     name { d: stack-type }
                    500:     get-current type-names set-current
                    501:     stack-type 2dup nextname stack-type-name
                    502:     set-current
                    503:     stack-pointer lastxt >body stack-name nextname make-stack ;
                    504: 
                    505: stack inst-stream IP Cell
1.73      anton     506: ' inst-in-index inst-stream stack-in-index-xt !
1.80      anton     507: ' inst-stream <is> inst-stream-f
1.73      anton     508: \ !! initialize stack-in and stack-out
1.1       anton     509: 
                    510: \ offset computation
                    511: \ the leftmost (i.e. deepest) item has offset 0
                    512: \ the rightmost item has the highest offset
                    513: 
1.49      anton     514: : compute-offset { item xt -- }
                    515:     \ xt specifies in/out; update stack-in/out and set item-offset
                    516:     item item-type @ type-size @
                    517:     item item-stack @ xt execute dup @ >r +!
                    518:     r> item item-offset ! ;
                    519: 
1.64      anton     520: : compute-offset-in ( addr1 addr2 -- )
                    521:     ['] stack-in compute-offset ;
                    522: 
                    523: : compute-offset-out ( addr1 addr2 -- )
                    524:     ['] stack-out compute-offset ;
1.49      anton     525: 
                    526: : clear-stack { -- }
                    527:     dup stack-in off stack-out off ;
1.1       anton     528: 
                    529: : compute-offsets ( -- )
1.92      anton     530:     ['] clear-stack map-stacks
1.53      anton     531:     inst-stream clear-stack
1.69      anton     532:     prim prim-effect-in  prim prim-effect-in-end  @ ['] compute-offset-in  map-items
                    533:     prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
1.81      anton     534:     inst-stream stack-out @ 0= s" # can only be on the input side" ?print-error ;
                    535: 
                    536: : process-simple ( -- )
                    537:     prim prim { W^ key } key cell
1.82      anton     538:     combinations ['] constant insert-wordlist
1.81      anton     539:     declarations compute-offsets
1.82      anton     540:     output @ execute ;
1.49      anton     541: 
                    542: : flush-a-tos { stack -- }
                    543:     stack stack-out @ 0<> stack stack-in @ 0= and
                    544:     if
                    545:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    546:        2dup type ." [0] = " type ." TOS);" cr
                    547:     endif ;
1.1       anton     548: 
                    549: : flush-tos ( -- )
1.92      anton     550:     ['] flush-a-tos map-stacks ;
1.49      anton     551: 
                    552: : fill-a-tos { stack -- }
                    553:     stack stack-out @ 0= stack stack-in @ 0<> and
                    554:     if
                    555:        ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
                    556:        2dup type ." TOS = " type ." [0]);" cr
                    557:     endif ;
1.1       anton     558: 
                    559: : fill-tos ( -- )
1.53      anton     560:     \ !! inst-stream for prefetching?
1.92      anton     561:     ['] fill-a-tos map-stacks ;
1.49      anton     562: 
                    563: : fetch ( addr -- )
1.72      anton     564:     dup item-type @ type-fetch @ execute ;
1.1       anton     565: 
                    566: : fetches ( -- )
1.69      anton     567:     prim prim-effect-in prim prim-effect-in-end @ ['] fetch map-items ;
1.49      anton     568: 
                    569: : stack-pointer-update { stack -- }
                    570:     \ stack grow downwards
                    571:     stack stack-in @ stack stack-out @ -
                    572:     ?dup-if \ this check is not necessary, gcc would do this for us
                    573:        stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
                    574:     endif ;
1.1       anton     575: 
1.55      anton     576: : inst-pointer-update ( -- )
                    577:     inst-stream stack-in @ ?dup-if
                    578:        ." INC_IP(" 0 .r ." );" cr
                    579:     endif ;
                    580: 
1.1       anton     581: : stack-pointer-updates ( -- )
1.55      anton     582:     inst-pointer-update
1.92      anton     583:     ['] stack-pointer-update map-stacks ;
1.1       anton     584: 
                    585: : store ( item -- )
                    586: \ f is true if the item should be stored
                    587: \ f is false if the store is probably not necessary
1.49      anton     588:  dup item-type @ type-store @ execute ;
1.1       anton     589: 
                    590: : stores ( -- )
1.69      anton     591:     prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
1.8       pazsan    592: 
1.91      anton     593: : print-debug-arg { item -- }
                    594:     ." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
                    595:     ." printarg_" item item-type @ print-type-prefix
                    596:     ." (" item item-name 2@ type ." );" cr ;
                    597:     
                    598: : print-debug-args ( -- )
                    599:     ." #ifdef VM_DEBUG" cr
                    600:     ." if (vm_debug) {" cr
                    601:     prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
                    602: \    ." fputc('\n', vm_out);" cr
                    603:     ." }" cr
                    604:     ." #endif" cr ;
                    605: 
                    606: : print-debug-result { item -- }
                    607:     item item-first @ if
                    608:        item print-debug-arg
                    609:     endif ;
                    610: 
                    611: : print-debug-results ( -- )
                    612:     cr
                    613:     ." #ifdef VM_DEBUG" cr
                    614:     ." if (vm_debug) {" cr
                    615:     ." fputs(" quote ."  -- " quote ." , vm_out); "
                    616:     prim prim-effect-out prim prim-effect-out-end @ ['] print-debug-result map-items
                    617:     ." fputc('\n', vm_out);" cr
                    618:     ." }" cr
                    619:     ." #endif" cr ;
                    620: 
1.86      anton     621: : output-super-end ( -- )
                    622:     prim prim-c-code 2@ s" SET_IP" search if
                    623:        ." SUPER_END;" cr
                    624:     endif
                    625:     2drop ;
                    626: 
1.52      anton     627: : output-c-tail ( -- )
                    628:     \ the final part of the generated C code
1.86      anton     629:     output-super-end
1.91      anton     630:     print-debug-results
1.52      anton     631:     ." NEXT_P1;" cr
                    632:     stores
                    633:     fill-tos
1.85      anton     634:     ." NEXT_P2;" ;
1.52      anton     635: 
1.85      anton     636: : type-c-code ( c-addr u xt -- )
                    637:     \ like TYPE, but replaces "TAIL;" with tail code produced by xt
                    638:     { xt }
1.52      anton     639:     begin ( c-addr1 u1 )
                    640:        2dup s" TAIL;" search
                    641:     while ( c-addr1 u1 c-addr3 u3 )
                    642:        2dup 2>r drop nip over - type
1.85      anton     643:        xt execute
1.52      anton     644:        2r> 5 /string
                    645:        \ !! resync #line missing
                    646:     repeat
                    647:     2drop type ;
1.63      anton     648: 
1.72      anton     649: : print-entry ( -- )
1.101     anton     650:     ." LABEL(" prim prim-c-name 2@ type ." ):" ;
1.63      anton     651:     
1.43      jwilke    652: : output-c ( -- ) 
1.72      anton     653:  print-entry ."  /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
1.69      anton     654:  ." /* " prim prim-doc 2@ type ."  */" cr
                    655:  ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
1.1       anton     656:  ." {" cr
                    657:  ." DEF_CA" cr
1.66      anton     658:  print-declarations
1.13      anton     659:  ." NEXT_P0;" cr
                    660:  flush-tos
1.1       anton     661:  fetches
1.63      anton     662:  print-debug-args
1.13      anton     663:  stack-pointer-updates
1.1       anton     664:  ." {" cr
1.63      anton     665:  ." #line " c-line @ . quote c-filename 2@ type quote cr
1.85      anton     666:  prim prim-c-code 2@ ['] output-c-tail type-c-code
1.1       anton     667:  ." }" cr
1.52      anton     668:  output-c-tail
1.1       anton     669:  ." }" cr
                    670:  cr
                    671: ;
                    672: 
1.56      anton     673: : disasm-arg { item -- }
                    674:     item item-stack @ inst-stream = if
1.63      anton     675:        ."   fputc(' ', vm_out); "
                    676:        ." printarg_" item item-type @ print-type-prefix
                    677:        ." ((" item item-type @ type-c-name 2@ type ." )"
                    678:        ." ip[" item item-offset @ 1+ 0 .r ." ]);" cr
1.56      anton     679:     endif ;
                    680: 
                    681: : disasm-args ( -- )
1.69      anton     682:     prim prim-effect-in prim prim-effect-in-end @ ['] disasm-arg map-items ;
1.56      anton     683: 
                    684: : output-disasm ( -- )
                    685:     \ generate code for disassembling VM instructions
                    686:     ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
1.69      anton     687:     ."   fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
1.56      anton     688:     disasm-args
                    689:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
1.91      anton     690:     ."   goto _endif_;" cr
                    691:     ." }" cr ;
1.56      anton     692: 
1.86      anton     693: : output-profile ( -- )
                    694:     \ generate code for postprocessing the VM block profile stuff
1.87      anton     695:     ." if (VM_IS_INST(*ip, " function-number @ 0 .r ." )) {" cr
1.104   ! anton     696:     ."   add_inst(b, " quote prim prim-name 2@ type quote ." );" cr
1.86      anton     697:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
                    698:     prim prim-c-code 2@  s" SET_IP"    search nip nip
                    699:     prim prim-c-code 2@  s" SUPER_END" search nip nip or if
                    700:        ."   return;" cr
1.91      anton     701:     else
                    702:        ."   goto _endif_;" cr
1.86      anton     703:     endif
1.91      anton     704:     ." }" cr ;
1.86      anton     705: 
1.104   ! anton     706: : output-profile-combined ( -- )
        !           707:     \ generate code for postprocessing the VM block profile stuff
        !           708:     ." if (VM_IS_INST(*ip, " function-number @ 0 .r ." )) {" cr
        !           709:     num-combined @ 0 +do
        !           710:        ."   add_inst(b, " quote
        !           711:        combined-prims i th @ prim-name 2@ type
        !           712:        quote ." );" cr
        !           713:     loop
        !           714:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
        !           715:     combined-prims num-combined @ 1- th @ prim-c-code 2@  s" SET_IP"    search nip nip
        !           716:     combined-prims num-combined @ 1- th @ prim-c-code 2@  s" SUPER_END" search nip nip or if
        !           717:        ."   return;" cr
        !           718:     else
        !           719:        ."   goto _endif_;" cr
        !           720:     endif
        !           721:     ." }" cr ;
        !           722: 
1.103     anton     723: : output-superend ( -- )
                    724:     \ output flag specifying whether the current word ends a dynamic superinst
                    725:     prim prim-c-code 2@  s" SET_IP"    search nip nip
                    726:     prim prim-c-code 2@  s" SUPER_END" search nip nip or 0<>
                    727:     prim prim-c-code 2@  s" SUPER_CONTINUE" search nip nip 0= and
                    728:     negate 0 .r ." , /* " prim prim-name 2@ type ."  */" cr ;
                    729: 
1.60      anton     730: : gen-arg-parm { item -- }
                    731:     item item-stack @ inst-stream = if
                    732:        ." , " item item-type @ type-c-name 2@ type space
                    733:        item item-name 2@ type
                    734:     endif ;
                    735: 
                    736: : gen-args-parm ( -- )
1.69      anton     737:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-parm map-items ;
1.60      anton     738: 
                    739: : gen-arg-gen { item -- }
                    740:     item item-stack @ inst-stream = if
                    741:        ."   genarg_" item item-type @ print-type-prefix
                    742:         ." (ctp, " item item-name 2@ type ." );" cr
                    743:     endif ;
                    744: 
                    745: : gen-args-gen ( -- )
1.69      anton     746:     prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-gen map-items ;
1.60      anton     747: 
                    748: : output-gen ( -- )
                    749:     \ generate C code for generating VM instructions
1.69      anton     750:     ." void gen_" prim prim-c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
1.60      anton     751:     ." {" cr
                    752:     ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
                    753:     gen-args-gen
1.68      anton     754:     ." }" cr ;
1.60      anton     755: 
1.49      anton     756: : stack-used? { stack -- f }
                    757:     stack stack-in @ stack stack-out @ or 0<> ;
1.44      jwilke    758: 
1.30      pazsan    759: : output-funclabel ( -- )
1.69      anton     760:   ." &I_" prim prim-c-name 2@ type ." ," cr ;
1.30      pazsan    761: 
                    762: : output-forthname ( -- )
1.69      anton     763:   '" emit prim prim-name 2@ type '" emit ." ," cr ;
1.30      pazsan    764: 
1.92      anton     765: \  : output-c-func ( -- )
                    766: \  \ used for word libraries
                    767: \      ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP)      /* " prim prim-name 2@ type
                    768: \      ."  ( " prim prim-stack-string 2@ type ."  ) */" cr
                    769: \      ." /* " prim prim-doc 2@ type ."  */" cr
                    770: \      ." NAME(" quote prim prim-name 2@ type quote ." )" cr
                    771: \      \ debugging
                    772: \      ." {" cr
                    773: \      print-declarations
                    774: \      \ !! don't know what to do about that
                    775: \      inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
                    776: \      data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
                    777: \      fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
                    778: \      return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
                    779: \      flush-tos
                    780: \      fetches
                    781: \      stack-pointer-updates
                    782: \      fp-stack   stack-used? IF ." *FP=fp;" cr THEN
                    783: \      ." {" cr
                    784: \      ." #line " c-line @ . quote c-filename 2@ type quote cr
                    785: \      prim prim-c-code 2@ type
                    786: \      ." }" cr
                    787: \      stores
                    788: \      fill-tos
                    789: \      ." return (sp);" cr
                    790: \      ." }" cr
                    791: \      cr ;
1.30      pazsan    792: 
1.43      jwilke    793: : output-label ( -- )  
1.102     anton     794:     ." INST_ADDR(" prim prim-c-name 2@ type ." )," cr ;
1.1       anton     795: 
1.43      jwilke    796: : output-alias ( -- ) 
1.69      anton     797:     ( primitive-number @ . ." alias " ) ." Primitive " prim prim-name 2@ type cr ;
1.1       anton     798: 
1.43      jwilke    799: : output-forth ( -- )  
1.69      anton     800:     prim prim-forth-code @ 0=
1.30      pazsan    801:     IF         \ output-alias
1.28      jwilke    802:        \ this is bad for ec: an alias is compiled if tho word does not exist!
                    803:        \ JAW
1.69      anton     804:     ELSE  ." : " prim prim-name 2@ type ."   ( "
                    805:        prim prim-stack-string 2@ type ." )" cr
                    806:        prim prim-forth-code 2@ type cr
1.30      pazsan    807:     THEN ;
1.10      anton     808: 
1.17      anton     809: : output-tag-file ( -- )
                    810:     name-filename 2@ last-name-filename 2@ compare if
                    811:        name-filename 2@ last-name-filename 2!
                    812:        #ff emit cr
                    813:        name-filename 2@ type
                    814:        ." ,0" cr
                    815:     endif ;
                    816: 
                    817: : output-tag ( -- )
                    818:     output-tag-file
1.69      anton     819:     prim prim-name 2@ 1+ type
1.17      anton     820:     127 emit
1.69      anton     821:     space prim prim-name 2@ type space
1.17      anton     822:     1 emit
                    823:     name-line @ 0 .r
                    824:     ." ,0" cr ;
                    825: 
1.100     pazsan    826: : output-vi-tag ( -- )
                    827:     name-filename 2@ type #tab emit
                    828:     prim prim-name 2@ type #tab emit
                    829:     ." /^" prim prim-name 2@ type ."  *(/" cr ;
                    830: 
1.10      anton     831: [IFDEF] documentation
                    832: : register-doc ( -- )
1.82      anton     833:     prim prim-name 2@ documentation ['] create insert-wordlist
1.69      anton     834:     prim prim-name 2@ 2,
                    835:     prim prim-stack-string 2@ condition-stack-effect 2,
                    836:     prim prim-wordset 2@ 2,
                    837:     prim prim-c-name 2@ condition-pronounciation 2,
1.82      anton     838:     prim prim-doc 2@ 2, ;
1.10      anton     839: [THEN]
1.67      anton     840: 
                    841: 
1.69      anton     842: \ combining instructions
                    843: 
                    844: \ The input should look like this:
                    845: 
                    846: \ lit_+ = lit +
                    847: 
                    848: \ The output should look like this:
                    849: 
                    850: \  I_lit_+:
                    851: \  {
                    852: \  DEF_CA
                    853: \  Cell _x_ip0;
                    854: \  Cell _x_sp0;
                    855: \  Cell _x_sp1;
                    856: \  NEXT_P0;
                    857: \  _x_ip0 = (Cell) IPTOS;
                    858: \  _x_sp0 = (Cell) spTOS;
                    859: \  INC_IP(1);
                    860: \  /* sp += 0; */
                    861: \  /* lit ( #w -- w ) */
                    862: \  /*  */
                    863: \  NAME("lit")
                    864: \  {
                    865: \  Cell w;
                    866: \  w = (Cell) _x_ip0;
                    867: \  #ifdef VM_DEBUG
                    868: \  if (vm_debug) {
                    869: \  fputs(" w=", vm_out); printarg_w (w);
                    870: \  fputc('\n', vm_out);
                    871: \  }
                    872: \  #endif
                    873: \  {
                    874: \  #line 136 "./prim"
                    875: \  }
                    876: \  _x_sp1 = (Cell)w;
                    877: \  }
                    878: \  I_plus:     /* + ( n1 n2 -- n ) */
                    879: \  /*  */
                    880: \  NAME("+")
                    881: \  {
                    882: \  DEF_CA
                    883: \  Cell n1;
                    884: \  Cell n2;
                    885: \  Cell n;
                    886: \  NEXT_P0;
                    887: \  n1 = (Cell) _x_sp0;
                    888: \  n2 = (Cell) _x_sp1;
                    889: \  #ifdef VM_DEBUG
                    890: \  if (vm_debug) {
                    891: \  fputs(" n1=", vm_out); printarg_n (n1);
                    892: \  fputs(" n2=", vm_out); printarg_n (n2);
                    893: \  fputc('\n', vm_out);
                    894: \  }
                    895: \  #endif
                    896: \  {
                    897: \  #line 516 "./prim"
                    898: \  n = n1+n2;
                    899: \  }
                    900: \  NEXT_P1;
                    901: \  _x_sp0 = (Cell)n;
                    902: \  NEXT_P2;
                    903: \  }
                    904: \  NEXT_P1;
                    905: \  spTOS = (Cell)_x_sp0;
                    906: \  NEXT_P2;
                    907: 
1.71      anton     908: : init-combined ( -- )
1.79      anton     909:     prim to combined
1.71      anton     910:     0 num-combined !
                    911:     current-depth max-stacks cells erase
1.72      anton     912:     max-depth     max-stacks cells erase
                    913:     min-depth     max-stacks cells erase
                    914:     prim prim-effect-in  prim prim-effect-in-end  !
                    915:     prim prim-effect-out prim prim-effect-out-end ! ;
1.71      anton     916: 
                    917: : max! ( n addr -- )
                    918:     tuck @ max swap ! ;
                    919: 
1.72      anton     920: : min! ( n addr -- )
                    921:     tuck @ min swap ! ;
                    922: 
1.71      anton     923: : add-depths { p -- }
                    924:     \ combine stack effect of p with *-depths
                    925:     max-stacks 0 ?do
1.72      anton     926:        current-depth i th @
                    927:        p prim-stacks-in  i th @ +
                    928:        dup max-depth i th max!
                    929:        p prim-stacks-out i th @ -
                    930:        dup min-depth i th min!
                    931:        current-depth i th !
1.71      anton     932:     loop ;
                    933: 
                    934: : add-prim ( addr u -- )
                    935:     \ add primitive given by "addr u" to combined-prims
                    936:     primitives search-wordlist s" unknown primitive" ?print-error
                    937:     execute { p }
1.72      anton     938:     p combined-prims num-combined @ th !
1.71      anton     939:     1 num-combined +!
                    940:     p add-depths ;
                    941: 
                    942: : compute-effects { q -- }
                    943:     \ compute the stack effects of q from the depths
                    944:     max-stacks 0 ?do
1.72      anton     945:        max-depth i th @ dup
                    946:        q prim-stacks-in i th !
                    947:        current-depth i th @ -
                    948:        q prim-stacks-out i th !
                    949:     loop ;
                    950: 
                    951: : make-effect-items { stack# items effect-endp -- }
                    952:     \ effect-endp points to a pointer to the end of the current item-array
                    953:     \ and has to be updated
                    954:     stacks stack# th @ { stack }
                    955:     items 0 +do
                    956:        effect-endp @ { item }
                    957:        i 0 <# #s stack stack-pointer 2@ holds [char] _ hold #> save-mem
                    958:        item item-name 2!
                    959:        stack item item-stack !
1.74      anton     960:        stack stack-type @ item item-type !
1.72      anton     961:        i item item-offset !
                    962:        item item-first on
                    963:        item% %size effect-endp +!
                    964:     loop ;
                    965: 
                    966: : init-effects { q -- }
                    967:     \ initialize effects field for FETCHES and STORES
                    968:     max-stacks 0 ?do
                    969:        i q prim-stacks-in  i th @ q prim-effect-in-end  make-effect-items
                    970:        i q prim-stacks-out i th @ q prim-effect-out-end make-effect-items
1.71      anton     971:     loop ;
                    972: 
                    973: : process-combined ( -- )
1.81      anton     974:     combined combined-prims num-combined @ cells
1.82      anton     975:     combinations ['] constant insert-wordlist
1.86      anton     976:     combined-prims num-combined @ 1- th ( last-part )
                    977:     @ prim-c-code 2@ prim prim-c-code 2! \ used by output-super-end
1.72      anton     978:     prim compute-effects
                    979:     prim init-effects
                    980:     output-combined perform ;
                    981: 
                    982: \ C output
                    983: 
                    984: : print-item { n stack -- }
                    985:     \ print nth stack item name
1.79      anton     986:     stack stack-type @ type-c-name 2@ type space
                    987:     ." _" stack stack-pointer 2@ type n 0 .r ;
1.72      anton     988: 
                    989: : print-declarations-combined ( -- )
                    990:     max-stacks 0 ?do
                    991:        max-depth i th @ min-depth i th @ - 0 +do
                    992:            i stacks j th @ print-item ." ;" cr
                    993:        loop
                    994:     loop ;
1.79      anton     995: 
                    996: : part-fetches ( -- )
                    997:     fetches ;
                    998: 
                    999: : part-output-c-tail ( -- )
1.91      anton    1000:     print-debug-results
1.85      anton    1001:     stores ;
                   1002: 
                   1003: : output-combined-tail ( -- )
                   1004:     part-output-c-tail
                   1005:     prim >r combined to prim
                   1006:     in-part @ >r in-part off
                   1007:     output-c-tail
                   1008:     r> in-part ! r> to prim ;
1.79      anton    1009: 
                   1010: : output-part ( p -- )
                   1011:     to prim
                   1012:     ." /* " prim prim-name 2@ type ."  ( " prim prim-stack-string 2@ type ." ) */" cr
                   1013:     ." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
                   1014:     ." {" cr
                   1015:     print-declarations
                   1016:     part-fetches
                   1017:     print-debug-args
                   1018:     prim add-depths \ !! right place?
                   1019:     ." {" cr
                   1020:     ." #line " c-line @ . quote c-filename 2@ type quote cr
1.85      anton    1021:     prim prim-c-code 2@ ['] output-combined-tail type-c-code
1.79      anton    1022:     ." }" cr
                   1023:     part-output-c-tail
                   1024:     ." }" cr ;
                   1025: 
1.74      anton    1026: : output-parts ( -- )
1.79      anton    1027:     prim >r in-part on
                   1028:     current-depth max-stacks cells erase
1.74      anton    1029:     num-combined @ 0 +do
1.79      anton    1030:        combined-prims i th @ output-part
1.74      anton    1031:     loop
1.79      anton    1032:     in-part off
1.74      anton    1033:     r> to prim ;
                   1034: 
1.72      anton    1035: : output-c-combined ( -- )
                   1036:     print-entry cr
1.74      anton    1037:     \ debugging messages just in parts
1.72      anton    1038:     ." {" cr
                   1039:     ." DEF_CA" cr
                   1040:     print-declarations-combined
                   1041:     ." NEXT_P0;" cr
                   1042:     flush-tos
                   1043:     fetches
1.74      anton    1044:     \ print-debug-args
                   1045:     stack-pointer-updates
                   1046:     output-parts
                   1047:     output-c-tail
                   1048:     ." }" cr
                   1049:     cr ;
1.72      anton    1050: 
                   1051: : output-forth-combined ( -- )
1.81      anton    1052: ;
                   1053: 
                   1054: 
1.83      anton    1055: \ peephole optimization rules
1.81      anton    1056: 
                   1057: \ in order for this to work as intended, shorter combinations for each
                   1058: \ length must be present, and the longer combinations must follow
                   1059: \ shorter ones (this restriction may go away in the future).
                   1060:   
1.83      anton    1061: : output-peephole ( -- )
1.81      anton    1062:     combined-prims num-combined @ 1- cells combinations search-wordlist
                   1063:     s" the prefix for this combination must be defined earlier" ?print-error
1.82      anton    1064:     ." {"
                   1065:     execute prim-num @ 5 .r ." ,"
                   1066:     combined-prims num-combined @ 1- th @ prim-num @ 5 .r ." ,"
                   1067:     combined prim-num @ 5 .r ." }, /* "
                   1068:     combined prim-c-name 2@ type ."  */"
                   1069:     cr ;
                   1070: 
1.90      pazsan   1071: : output-forth-peephole ( -- )
                   1072:     combined-prims num-combined @ 1- cells combinations search-wordlist
                   1073:     s" the prefix for this combination must be defined earlier" ?print-error
                   1074:     execute prim-num @ 5 .r
                   1075:     combined-prims num-combined @ 1- th @ prim-num @ 5 .r
                   1076:     combined prim-num @ 5 .r ."  prim, \ "
                   1077:     combined prim-c-name 2@ type
                   1078:     cr ;
                   1079: 
1.69      anton    1080: 
1.67      anton    1081: \ the parser
                   1082: 
                   1083: eof-char max-member \ the whole character set + EOF
                   1084: 
                   1085: : getinput ( -- n )
                   1086:  rawinput @ endrawinput @ =
                   1087:  if
                   1088:    eof-char
                   1089:  else
                   1090:    cookedinput @ c@
                   1091:  endif ;
                   1092: 
                   1093: :noname ( n -- )
                   1094:  dup bl > if
                   1095:   emit space
                   1096:  else
                   1097:   .
                   1098:  endif ;
                   1099: print-token !
                   1100: 
                   1101: : testchar? ( set -- f )
                   1102:  getinput member? ;
                   1103: ' testchar? test-vector !
                   1104: 
                   1105: : checksyncline ( -- )
                   1106:     \ when input points to a newline, check if the next line is a
                   1107:     \ sync line.  If it is, perform the appropriate actions.
                   1108:     rawinput @ >r
                   1109:     s" #line " r@ over compare 0<> if
                   1110:        rdrop 1 line +! EXIT
                   1111:     endif
                   1112:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
                   1113:     dup c@ bl = if
1.81      anton    1114:        char+ dup c@ [char] " <> 0= s" sync line syntax" ?print-error
1.67      anton    1115:        char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
                   1116:        char+
                   1117:     endif
1.81      anton    1118:     dup c@ nl-char <> 0= s" sync line syntax" ?print-error
1.67      anton    1119:     skipsynclines @ if
                   1120:        dup char+ rawinput !
                   1121:        rawinput @ c@ cookedinput @ c!
                   1122:     endif
                   1123:     drop ;
                   1124: 
                   1125: : ?nextchar ( f -- )
1.71      anton    1126:     s" syntax error, wrong char" ?print-error
1.67      anton    1127:     rawinput @ endrawinput @ <> if
                   1128:        rawinput @ c@
                   1129:        1 chars rawinput +!
                   1130:        1 chars cookedinput +!
                   1131:        nl-char = if
                   1132:            checksyncline
                   1133:            rawinput @ line-start !
                   1134:        endif
                   1135:        rawinput @ c@ cookedinput @ c!
                   1136:     endif ;
                   1137: 
                   1138: : charclass ( set "name" -- )
                   1139:  ['] ?nextchar terminal ;
                   1140: 
                   1141: : .. ( c1 c2 -- set )
                   1142:  ( creates a set that includes the characters c, c1<=c<=c2 )
                   1143:  empty copy-set
                   1144:  swap 1+ rot do
                   1145:   i over add-member
                   1146:  loop ;
                   1147: 
                   1148: : ` ( -- terminal ) ( use: ` c )
                   1149:  ( creates anonymous terminal for the character c )
                   1150:  char singleton ['] ?nextchar make-terminal ;
                   1151: 
                   1152: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
                   1153: char 0 char 9 ..                                       charclass digit
                   1154: bl singleton tab-char over add-member                  charclass white
                   1155: nl-char singleton eof-char over add-member complement  charclass nonl
                   1156: nl-char singleton eof-char over add-member
                   1157:     char : over add-member complement                   charclass nocolonnl
                   1158: bl 1+ maxchar .. char \ singleton complement intersection
                   1159:                                                         charclass nowhitebq
                   1160: bl 1+ maxchar ..                                        charclass nowhite
                   1161: char " singleton eof-char over add-member complement   charclass noquote
                   1162: nl-char singleton                                      charclass nl
                   1163: eof-char singleton                                     charclass eof
1.79      anton    1164: nl-char singleton eof-char over add-member             charclass nleof
1.67      anton    1165: 
                   1166: (( letter (( letter || digit )) **
                   1167: )) <- c-ident ( -- )
                   1168: 
                   1169: (( ` # ?? (( letter || digit || ` : )) **
                   1170: )) <- stack-ident ( -- )
                   1171: 
                   1172: (( nowhitebq nowhite ** ))
                   1173: <- forth-ident ( -- )
                   1174: 
                   1175: Variable forth-flag
                   1176: Variable c-flag
                   1177: 
                   1178: (( (( ` e || ` E )) {{ start }} nonl ** 
                   1179:    {{ end evaluate }}
                   1180: )) <- eval-comment ( ... -- ... )
                   1181: 
                   1182: (( (( ` f || ` F )) {{ start }} nonl ** 
                   1183:    {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
                   1184: )) <- forth-comment ( -- )
                   1185: 
                   1186: (( (( ` c || ` C )) {{ start }} nonl ** 
                   1187:    {{ end c-flag @ IF type cr ELSE 2drop THEN }}
                   1188: )) <- c-comment ( -- )
                   1189: 
                   1190: (( ` - nonl ** {{ 
                   1191:        forth-flag @ IF ." [ELSE]" cr THEN
                   1192:        c-flag @ IF ." #else" cr THEN }}
                   1193: )) <- else-comment
                   1194: 
                   1195: (( ` + {{ start }} nonl ** {{ end
                   1196:        dup
                   1197:        IF      c-flag @
                   1198:                IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
                   1199:                THEN
                   1200:                forth-flag @
                   1201:                IF  ." has? " type ."  [IF]"  cr THEN
                   1202:        ELSE    2drop
                   1203:            c-flag @      IF  ." #endif"  cr THEN
                   1204:            forth-flag @  IF  ." [THEN]"  cr THEN
                   1205:        THEN }}
                   1206: )) <- if-comment
                   1207: 
1.98      pazsan   1208: (( (( ` g || ` G )) {{ start }} nonl **
                   1209:    {{ end
                   1210:       forth-flag @ IF  ." group " type cr  THEN
                   1211:       c-flag @     IF  ." GROUP(" type ." )" cr  THEN }}
                   1212: )) <- group-comment
                   1213: 
                   1214: (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment || group-comment )) ?? nonl ** )) <- comment-body
1.67      anton    1215: 
1.79      anton    1216: (( ` \ comment-body nleof )) <- comment ( -- )
1.67      anton    1217: 
                   1218: (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
                   1219: <- stack-items
                   1220: 
1.69      anton    1221: (( {{ prim prim-effect-in }}  stack-items {{ prim prim-effect-in-end ! }}
1.67      anton    1222:    ` - ` - white **
1.69      anton    1223:    {{ prim prim-effect-out }} stack-items {{ prim prim-effect-out-end ! }}
1.67      anton    1224: )) <- stack-effect ( -- )
                   1225: 
1.71      anton    1226: (( {{ prim create-prim }}
1.69      anton    1227:    ` ( white ** {{ start }} stack-effect {{ end prim prim-stack-string 2! }} ` ) white **
                   1228:    (( {{ start }} forth-ident {{ end prim prim-wordset 2! }} white **
                   1229:       (( {{ start }}  c-ident {{ end prim prim-c-name 2! }} )) ??
1.79      anton    1230:    )) ??  nleof
                   1231:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- prim prim-doc 2! }} ` " white ** nleof )) ??
                   1232:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nleof white ** )) ** {{ end prim prim-c-code 2! skipsynclines on }}
                   1233:    (( ` :  white ** nleof
                   1234:       {{ start }} (( nonl ++  nleof white ** )) ++ {{ end prim prim-forth-code 2! }}
1.81      anton    1235:    )) ?? {{ process-simple }}
1.79      anton    1236:    nleof
1.69      anton    1237: )) <- simple-primitive ( -- )
                   1238: 
1.71      anton    1239: (( {{ init-combined }}
1.89      anton    1240:    ` = white ** (( {{ start }} forth-ident {{ end add-prim }} white ** )) ++
1.79      anton    1241:    nleof {{ process-combined }}
1.69      anton    1242: )) <- combined-primitive
                   1243: 
1.79      anton    1244: (( {{ make-prim to prim 0 to combined
1.69      anton    1245:       line @ name-line ! filename 2@ name-filename 2!
1.82      anton    1246:       function-number @ prim prim-num !
1.69      anton    1247:       start }} forth-ident {{ end 2dup prim prim-name 2! prim prim-c-name 2! }}  white ++
1.104   ! anton    1248:    (( ` / white ** {{ start }} c-ident {{ end prim prim-c-name 2! }} white ** )) ??
1.82      anton    1249:    (( simple-primitive || combined-primitive )) {{ 1 function-number +! }}
1.67      anton    1250: )) <- primitive ( -- )
                   1251: 
                   1252: (( (( comment || primitive || nl white ** )) ** eof ))
                   1253: parser primitives2something
                   1254: warnings @ [IF]
                   1255: .( parser generated ok ) cr
                   1256: [THEN]
                   1257: 
1.95      jwilke   1258: 
1.97      jwilke   1259: \ run with gforth-0.5.0 (slurp-file is missing)
1.95      jwilke   1260: [IFUNDEF] slurp-file
                   1261: : slurp-file ( c-addr1 u1 -- c-addr2 u2 )
                   1262:     \ c-addr1 u1 is the filename, c-addr2 u2 is the file's contents
                   1263:     r/o bin open-file throw >r
                   1264:     r@ file-size throw abort" file too large"
                   1265:     dup allocate throw swap
                   1266:     2dup r@ read-file throw over <> abort" could not read whole file"
                   1267:     r> close-file throw ;
                   1268: [THEN]
                   1269: 
1.69      anton    1270: : primfilter ( addr u -- )
                   1271:     \ process the string at addr u
                   1272:     over dup rawinput ! dup line-start ! cookedinput !
                   1273:     + endrawinput !
                   1274:     checksyncline
                   1275:     primitives2something ;    
1.8       pazsan   1276: 
1.72      anton    1277: : process-file ( addr u xt-simple x-combined -- )
                   1278:     output-combined ! output !
1.61      anton    1279:     save-mem 2dup filename 2!
1.69      anton    1280:     slurp-file
1.17      anton    1281:     warnings @ if
                   1282:        ." ------------ CUT HERE -------------" cr  endif
1.69      anton    1283:     primfilter ;
1.30      pazsan   1284: 
1.72      anton    1285: \  : process      ( xt -- )
                   1286: \      bl word count rot
                   1287: \      process-file ;

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