--- gforth/prims2x.fs	1994/09/08 17:20:12	1.7
+++ gforth/prims2x.fs	1998/11/22 23:18:10	1.34
@@ -1,3 +1,24 @@
+\ converts primitives to, e.g., C code 
+
+\ Copyright (C) 1995 Free Software Foundation, Inc.
+
+\ This file is part of Gforth.
+
+\ Gforth is free software; you can redistribute it and/or
+\ modify it under the terms of the GNU General Public License
+\ as published by the Free Software Foundation; either version 2
+\ of the License, or (at your option) any later version.
+
+\ This program is distributed in the hope that it will be useful,
+\ but WITHOUT ANY WARRANTY; without even the implied warranty of
+\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+\ GNU General Public License for more details.
+
+\ You should have received a copy of the GNU General Public License
+\ along with this program; if not, write to the Free Software
+\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
 \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)
 
 \ Optimizations:
@@ -15,42 +36,63 @@
 \ 5) Words that call NEXT themselves have to be done very carefully.
 \
 \ To do:
+\ add the store optimization for doubles
 \ regarding problem 1 above: It would be better (for over) to implement
 \ 	the alternative
 
 warnings off
 
-[IFUNDEF] vocabulary  include search-order.fs [THEN]
+require search.fs
+require extend.fs
+
+\ require interpretation.fs
+\ require debugs.fs
+[IFUNDEF] vocabulary    include search.fs [THEN]
+[IFUNDEF] environment?  include environ.fs      [THEN]
 include gray.fs
 
 100 constant max-effect \ number of things on one side of a stack effect
-4096 constant batch-size \ no meaning, just make sure it's >0
 255 constant maxchar
 maxchar 1+ constant eof-char
-9 constant tab-char
-10 constant nl-char
+#tab constant tab-char
+#lf constant nl-char
 
 : read-whole-file ( c-addr1 file-id -- c-addr2 )
 \ reads the contents of the file file-id puts it into memory at c-addr1
 \ c-addr2 is the first address after the file block
-  begin ( c-addr file-id )
-    2dup batch-size swap read-file 
-    if
-      abort" I/O error"
-    endif
-    ( c-addr file-id actual-size ) rot over + -rot
-    batch-size <>
-  until
-  drop ;
+  >r dup $7fffffff r> read-file throw + ;
 
-variable input \ pointer to next character to be parsed
-variable endinput \ pointer to the end of the input (the char after the last)
+variable rawinput \ pointer to next character to be scanned
+variable endrawinput \ pointer to the end of the input (the char after the last)
+variable cookedinput \ pointer to the next char to be parsed
+variable line \ line number of char pointed to by input
+1 line !
+2variable filename \ filename of original input file
+0 0 filename 2!
+2variable f-comment
+0 0 f-comment 2!
+variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
+skipsynclines on 
+
+Variable flush-comment flush-comment off
+
+: ?flush-comment
+    flush-comment @ 0= ?EXIT
+    f-comment 2@ nip
+    IF  cr f-comment 2@ 2 /string 1-
+	dup IF
+	    flush-comment @ 1 =
+	    IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP
+	    ELSE  ." has? " type ."  [IF]"  THEN  cr
+	ELSE    flush-comment @ 1 = IF  ." #endif"  ELSE  ." [THEN]"  THEN
+	    cr  THEN
+	0 0 f-comment 2! THEN ;
 
 : start ( -- addr )
- input @ ;
+ cookedinput @ ;
 
 : end ( addr -- addr u )
- input @ over - ;
+ cookedinput @ over - ;
 
 variable output \ xt ( -- ) of output word
 
@@ -87,8 +129,14 @@ variable effect-in-end ( pointer )
 variable effect-out-end ( pointer )
 2variable effect-in-size
 2variable effect-out-size
+variable c-line
+2variable c-filename
+variable name-line
+2variable name-filename
+2variable last-name-filename
 
-variable primitive-number -9 primitive-number !
+variable primitive-number -10 primitive-number !
+Variable function-number 0 function-number !
 
 \ for several reasons stack items of a word are stored in a wordlist
 \ since neither forget nor marker are implemented yet, we make a new
@@ -108,12 +156,11 @@ variable items
 eof-char max-member \ the whole character set + EOF
 
 : getinput ( -- n )
- input @
- dup endinput @ =
+ rawinput @ endrawinput @ =
  if
-   drop eof-char
+   eof-char
  else
-   c@
+   cookedinput @ c@
  endif ;
 
 :noname ( n -- )
@@ -128,16 +175,42 @@ print-token !
  getinput member? ;
 ' testchar? test-vector !
 
+: checksyncline ( -- )
+    \ when input points to a newline, check if the next line is a
+    \ sync line.  If it is, perform the appropriate actions.
+    rawinput @ >r
+    s" #line " r@ over compare 0<> if
+	rdrop 1 line +! EXIT
+    endif
+    0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
+    dup c@ bl = if
+	char+ dup c@ [char] " <> abort" sync line syntax"
+	char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
+	char+
+    endif
+    dup c@ nl-char <> abort" sync line syntax"
+    skipsynclines @ if
+	dup char+ rawinput !
+	rawinput @ c@ cookedinput @ c!
+    endif
+    drop ;
+
 : ?nextchar ( f -- )
- ?not? if
-   ." syntax error" cr
-   getinput . cr
-   input @ endinput @ over - 100 min type cr
-   abort
- endif
- input @ endinput @ <> if
-   1 input +!
- endif ;
+    ?not? if
+	filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
+	getinput . cr
+	rawinput @ endrawinput @ over - 100 min type cr
+	abort
+    endif
+    rawinput @ endrawinput @ <> if
+	rawinput @ c@
+	1 chars rawinput +!
+	1 chars cookedinput +!
+	nl-char = if
+	    checksyncline
+	endif
+	rawinput @ c@ cookedinput @ c!
+    endif ;
 
 : charclass ( set "name" -- )
  ['] ?nextchar terminal ;
@@ -151,7 +224,7 @@ print-token !
 
 : ` ( -- terminal ) ( use: ` c )
  ( creates anonymous terminal for the character c )
- [compile] ascii singleton ['] ?nextchar make-terminal ;
+ char singleton ['] ?nextchar make-terminal ;
 
 char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
 char 0 char 9 ..					charclass digit
@@ -171,7 +244,8 @@ eof-char singleton					charclass eof
 nowhite ++
 <- name ( -- )
 
-(( ` \ nonl ** nl
+(( {{ ?flush-comment start }} ` \ nonl ** nl {{ end
+      2dup 2 min s" \+" compare 0= IF  f-comment 2!  ELSE  2drop  THEN }}
 )) <- comment ( -- )
 
 (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-in-end ! }}
@@ -181,13 +255,14 @@ nowhite ++
 
 (( {{ s" " doc 2! s" " forth-code 2! }}
    (( comment || nl )) **
-   (( {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  tab ++
+   (( {{ line @ name-line ! filename 2@ name-filename 2! }}
+      {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  tab ++
       {{ start }} stack-effect {{ end stack-string 2! }} tab ++
         {{ start }} name {{ end wordset 2! }} tab **
         (( {{ start }}  c-name {{ end c-name 2! }} )) ??  nl
    ))
    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??
-   {{ start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! }}
+   {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! skipsynclines on }}
    (( ` :  nl
       {{ start }} (( nonl ++  nl )) ++ {{ end forth-code 2! }}
    )) ??
@@ -203,11 +278,15 @@ warnings @ [IF]
 : primfilter ( file-id xt -- )
 \ fileid is for the input file, xt ( -- ) is for the output word
  output !
- here input !
+ here dup rawinput ! cookedinput !
  here swap read-whole-file
- dup endinput !
+ dup endrawinput !
  here - allot
  align
+ checksyncline
+\ begin
+\     getinput dup eof-char = ?EXIT emit true ?nextchar
+\ again ;
  primitives2something ;
 
 \ types
@@ -240,22 +319,25 @@ constant type-description
 
 : fetch-single ( item -- )
  >r
- r@ item-name 2@ type ."  = (" 
+ r@ item-name 2@ type
+ ."  = (" 
  r@ item-type @ type-c-name 2@ type ." ) "
  r@ item-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr
  rdrop ; 
 
 : fetch-double ( item -- )
  >r
- ." {Double_Store _d; _d.cells.low = "
+ ." FETCH_DCELL("
+ r@ item-name 2@ type ." , "
  r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access
- ." ; _d.cells.high = " 1+ effect-in-size 2@ data-stack-access ." ; "
- r@ item-name 2@ type ."  = _d.dcell;}" cr
+ ." , "			1+ effect-in-size 2@ data-stack-access
+ ." );" cr
  rdrop ;
 
 : fetch-float ( item -- )
  >r
- r@ item-name 2@ type ."  = "
+ r@ item-name 2@ type
+ ."  = "
  \ ." (" r@ item-type @ type-c-name 2@ type ." ) "
  r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr
  rdrop ;
@@ -264,9 +346,7 @@ constant type-description
 \ f is true iff the offset of item is the same as on input
  >r
  r@ item-name 2@ items @ search-wordlist 0=
- if
-   ." bug" cr abort
- endif
+ abort" bug"
  execute @
  dup r@ =
  if \ item first appeared in output
@@ -280,6 +360,10 @@ constant type-description
 \ true if item has the same offset as the input TOS
  item-d-offset @ 1+ effect-in-size 2@ drop = ;
 
+: is-out-tos? ( item -- f )
+\ true if item has the same offset as the input TOS
+ item-d-offset @ 1+ effect-out-size 2@ drop = ;
+
 : really-store-single ( item -- )
  >r
  r@ item-d-offset @ effect-out-size 2@ data-stack-access ."  = (Cell)"
@@ -290,7 +374,7 @@ constant type-description
  >r
  r@ d-same-as-in?
  if
-   r@ is-in-tos?
+   r@ is-in-tos? r@ is-out-tos? xor
    if
      ." IF_TOS(" r@ really-store-single ." );" cr
    endif
@@ -302,19 +386,17 @@ constant type-description
 : store-double ( item -- )
 \ !! store optimization is not performed, because it is not yet needed
  >r
- ." {Double_Store _d; _d.dcell = " r@ item-name 2@ type ." ; "
- r@ item-d-offset @ dup    effect-out-size 2@ data-stack-access 
- ."  = _d.cells.low; " 1+ effect-out-size 2@ data-stack-access
- ." = _d.cells.high;}" cr
+ ." STORE_DCELL(" r@ item-name 2@ type ." , "
+ r@ item-d-offset @ dup    effect-out-size 2@ data-stack-access
+ ." , "			1+ effect-out-size 2@ data-stack-access
+ ." );" cr
  rdrop ;
 
 : f-same-as-in? ( item -- f )
 \ f is true iff the offset of item is the same as on input
  >r
  r@ item-name 2@ items @ search-wordlist 0=
- if
-   ." bug" cr abort
- endif
+ abort" bug"
  execute @
  dup r@ =
  if \ item first appeared in output
@@ -347,13 +429,13 @@ constant type-description
  endif
  rdrop ;
  
-: single-type ( -- xt n1 n2 )
+: single-type ( -- xt1 xt2 n1 n2 )
  ['] fetch-single ['] store-single 1 0 ;
 
-: double-type ( -- xt n1 n2 )
+: double-type ( -- xt1 xt2 n1 n2 )
  ['] fetch-double ['] store-double 2 0 ;
 
-: float-type ( -- xt n1 n2 )
+: float-type ( -- xt1 xt2 n1 n2 )
  ['] fetch-float ['] store-float 0 1 ;
 
 : s, ( addr u -- )
@@ -391,7 +473,7 @@ s" DFloat *"	single-type starts-with df_
 s" SFloat *"	single-type starts-with sf_
 s" Xt"		single-type starts-with xt
 s" WID"		single-type starts-with wid
-s" F83Name *"	single-type starts-with f83name
+s" struct F83Name *"	single-type starts-with f83name
 
 set-current
 
@@ -406,7 +488,7 @@ set-current
    endif
  -1 s+loop
  \ we did not find a type, abort
- ." unknown type prefix" cr ABORT ;
+ true abort" unknown type prefix" ;
 
 : declare ( addr "name" -- )
 \ remember that there is a stack item at addr called name
@@ -428,6 +510,9 @@ set-current
   i declaration
  item-descr +loop ;
 
+: fetch ( addr -- )
+ dup item-type @ type-fetch-handler execute ;
+
 : declarations ( -- )
  wordlist dup items ! set-current
  effect-in effect-in-end @ declaration-list
@@ -479,16 +564,13 @@ set-current
    ." IF_TOS(TOS = sp[0]);" cr
  endif ;
 
-: fetch ( addr -- )
- dup item-type @ type-fetch-handler execute ;
-
 : fetches ( -- )
  effect-in-end @ effect-in ?do
    i fetch
  item-descr +loop ; 
 
 : stack-pointer-updates ( -- )
-\ we do not check if an update is a noop; gcc does this for us
+\ we need not check if an update is a noop; gcc does this for us
  effect-in-size 2@
  effect-out-size 2@
  rot swap - ( d-in d-out f-diff )
@@ -506,18 +588,26 @@ set-current
    i store
  item-descr +loop ; 
 
-: output-c ( -- )
+: .stack-list ( start end -- )
+ swap ?do
+   i item-name 2@ type space
+ item-descr +loop ; 
+
+: output-c ( -- ) 1 flush-comment !
+    ?flush-comment
  ." I_" c-name 2@ type ." :	/* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr
  ." /* " doc 2@ type ."  */" cr
+ ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
  ." {" cr
  ." DEF_CA" cr
  declarations
  compute-offsets \ for everything else
+ ." NEXT_P0;" cr
  flush-tos
  fetches
- stack-pointer-updates cr
- ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
+ stack-pointer-updates
  ." {" cr
+ ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
  c-code 2@ type
  ." }" cr
  ." NEXT_P1;" cr
@@ -528,19 +618,103 @@ set-current
  cr
 ;
 
-: output-label ( -- )
- ." &&I_" c-name 2@ type ." ," cr ;
-
-: output-alias ( -- )
- primitive-number @ . ." alias " forth-name 2@ type cr
- -1 primitive-number +! ;
+: output-funclabel ( -- )
+  1 function-number +!
+  ." &I_" c-name 2@ type ." ," cr ;
+
+: output-forthname ( -- )
+  1 function-number +!
+  '" emit forth-name 2@ type '" emit ." ," cr ;
+
+: output-c-func ( -- )
+    1 function-number +!
+    ." void I_" c-name 2@ type ." ()      /* " forth-name 2@ type
+    ."  ( " stack-string 2@ type ."  ) */" cr
+    ." /* " doc 2@ type ."  */" cr
+    ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr
+    \ debugging
+    ." {" cr
+    ." DEF_CA" cr
+    declarations
+    compute-offsets \ for everything else
+    ." NEXT_P0;" cr
+    flush-tos
+    fetches
+    stack-pointer-updates
+    ." {" cr
+    ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
+    c-code 2@ type
+    ." }" cr
+    ." NEXT_P1;" cr
+    stores
+    fill-tos
+    ." NEXT_P2;" cr
+    ." }" cr
+    cr ;
+
+: output-label ( -- )  1 flush-comment !
+    ?flush-comment
+    ." [" -2 primitive-number @ - 0 .r ." ] "
+    ." (Label)&&I_" c-name 2@ type ." ," cr
+    -1 primitive-number +! ;
+
+: output-alias ( -- )  flush-comment on
+    ?flush-comment
+    primitive-number @ . ." alias " forth-name 2@ type cr
+    -1 primitive-number +! ;
+
+: output-forth ( -- )  flush-comment on
+    ?flush-comment
+    forth-code @ 0=
+    IF    	\ output-alias
+	\ this is bad for ec: an alias is compiled if tho word does not exist!
+	\ JAW
+    ELSE  ." : " forth-name 2@ type ."   ( "
+	effect-in effect-in-end @ .stack-list ." -- "
+	effect-out effect-out-end @ .stack-list ." )" cr
+	forth-code 2@ type cr
+	-1 primitive-number +!
+    THEN ;
+
+: output-tag-file ( -- )
+    name-filename 2@ last-name-filename 2@ compare if
+	name-filename 2@ last-name-filename 2!
+	#ff emit cr
+	name-filename 2@ type
+	." ,0" cr
+    endif ;
+
+: output-tag ( -- )
+    output-tag-file
+    forth-name 2@ 1+ type
+    127 emit
+    space forth-name 2@ type space
+    1 emit
+    name-line @ 0 .r
+    ." ,0" cr ;
+
+[IFDEF] documentation
+: register-doc ( -- )
+    get-current documentation set-current
+    forth-name 2@ nextname create
+    forth-name 2@ 2,
+    stack-string 2@ condition-stack-effect 2,
+    wordset 2@ 2,
+    c-name 2@ condition-pronounciation 2,
+    doc 2@ 2,
+    set-current ;
+[THEN]
 
 : process-file ( addr u xt -- )
- >r r/o open-file
- if
-   ." cannot open file" cr abort
- endif
- warnings @ if
- ." ------------ CUT HERE -------------" cr  endif
- r> primfilter ;
+    >r
+    2dup filename 2!
+    0 function-number !
+    r/o open-file abort" cannot open file"
+    warnings @ if
+	." ------------ CUT HERE -------------" cr  endif
+    r> primfilter ;
+
+: process      ( xt -- )
+    bl word count rot
+    process-file ;