Diff for /gforth/kernel/quotes.fs between versions 1.1 and 1.10

version 1.1, 1999/05/18 15:13:50 version 1.10, 2003/03/09 15:17:06
Line 1 Line 1
 \ quote: S" and ." words  \ quote: S" and ." words
   
 \ Copyright (C) 1996,1998 Free Software Foundation, Inc.  \ Copyright (C) 1996,1998,1999,2002 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 16 Line 16
   
 \ You should have received a copy of the GNU General Public License  \ You should have received a copy of the GNU General Public License
 \ along with this program; if not, write to the Free Software  \ along with this program; if not, write to the Free Software
 \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
 \ this file comes last, because these words override cross' words.  \ this file comes last, because these words override cross' words.
   
 require ./vars.fs  require ./vars.fs
   
 create s"-buffer /line chars allot  : CLiteral ( Compilation c-addr1 u ; run-time -- c-addr )
       2>r postpone ahead here 2r> s, >r postpone then
       r> postpone literal ; immediate restrict
   
   : SLiteral ( Compilation c-addr1 u ; run-time -- c-addr2 u ) \ string
   \G Compilation: compile the string specified by @i{c-addr1},
   \G @i{u} into the current definition. Run-time: return
   \G @i{c-addr2 u} describing the address and length of the
   \G string.
       tuck 2>r postpone ahead here 2r> chars mem, align >r postpone then
       r> postpone literal postpone literal ; immediate restrict
   
   \ \ abort"                                                      22feb93py
   
   : abort" ( compilation 'ccc"' -- ; run-time f -- ) \ core,exception-ext abort-quote
   \G If any bit of @i{f} is non-zero, perform the function of @code{-2 throw},
   \G displaying the string @i{ccc} if there is no exception frame on the
   \G exception stack.
       postpone if [char] " parse postpone cliteral postpone c(abort")
       postpone then ; immediate restrict
   
   \ create s"-buffer /line chars allot
 has? compiler 0=   has? compiler 0= 
 [IF] : s" [ELSE] :noname [THEN]  [IF] : s" [ELSE] :noname [THEN]
         [char] " parse          [char] " parse
         /line min >r s"-buffer r@ cmove  [ has? OS [IF] ]
         s"-buffer r> ;      save-mem
   [ [THEN] ]
   ;
   \       /line min >r s"-buffer r@ cmove
   \       s"-buffer r> ;
 has? compiler [IF]  has? compiler [IF]
 :noname [char] " parse postpone SLiteral ;  :noname [char] " parse postpone SLiteral ;
 interpret/compile: S" ( compilation 'ccc"' -- ; run-time -- c-addr u )  \ core,file     s-quote  interpret/compile: S" ( compilation 'ccc"' -- ; run-time -- c-addr u )  \ core,file     s-quote
   \G Compilation: Parse a string @i{ccc} delimited by a @code{"}    \G Compilation: Parse a string @i{ccc} delimited by a @code{"}
   \G (double quote). At run-time, return the length, @i{u}, and the    \G (double quote). At run-time, return the length, @i{u}, and the
   \G start address, @i{c-addr} of the string. Interpretation: parse    \G start address, @i{c-addr} of the string. Interpretation: parse
   \G the string as before, and return @i{c-addr}, @i{u}. The    \G the string as before, and return @i{c-addr}, @i{u}. Gforth
   \G string is stored in a temporary buffer which may be overwritten    \G @code{allocate}s the string. The resulting memory leak is usually
   \G by subsequent uses of @code{S"}.    \G not a problem; the exception is if you create strings containing
     \G @code{S"} and @code{evaluate} them; then the leak is not bounded
     \G by the size of the interpreted files and you may want to
     \G @code{free} the strings.  ANS Forth only guarantees one buffer of
     \G 80 characters, so in standard programs you should assume that the
     \G string lives only until the next @code{s"}.
 [THEN]  [THEN]
   
 :noname    [char] " parse type ;  :noname    [char] " parse type ;
 :noname    postpone (.") ,"  align ;  :noname    [char] " parse postpone sLiteral postpone type ;
 interpret/compile: ." ( compilation 'ccc"' -- ; run-time -- )  \ core   dot-quote  interpret/compile: ." ( compilation 'ccc"' -- ; run-time -- )  \ core   dot-quote
   \G Compilation: Parse a string @i{ccc} delimited by a " (double    \G Compilation: Parse a string @i{ccc} delimited by a " (double
   \G quote). At run-time, display the string. Interpretation semantics    \G quote). At run-time, display the string. Interpretation semantics

Removed from v.1.1  
changed lines
  Added in v.1.10


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