File:  [gforth] / gforth / stuff.fs
Revision 1.8: download - view: text, annotated - select for diffs
Sun Jan 3 21:48:37 1999 UTC (22 years, 11 months ago) by anton
Branches: MAIN
CVS tags: HEAD
added ]L, IN-DICTIONARY? and IN-RETURN-STACK? to stuff.fs
refactored a few words to use IN-DICTIONARY?
added backtrace hooks to CATCH, THROW and (DOERROR)
added simple backtrace printing

    1: \ miscelleneous words
    2: 
    3: \ Copyright (C) 1996,1997,1998 Free Software Foundation, Inc.
    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
   19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   20: 
   21: 
   22: ' require alias needs ( ... "name" -- ... ) \ gforth
   23: \G an alias for @code{require}; exists on other systems (e.g., Win32Forth).
   24: \ needs is an F-PC name. we will probably switch to 'needs' in the future
   25: 
   26: \ a little more compiler security
   27: 
   28: \ currently not used by Gforth, but maybe by add-ons e.g., the 486asm
   29: AUser CSP
   30: 
   31: : !CSP ( -- )
   32:     sp@ csp ! ;
   33: 
   34: : ?CSP ( -- )
   35:     sp@ csp @ <> -22 and throw ;
   36: 
   37: \ DMIN and DMAX
   38: 
   39: : dmin ( d1 d2 -- d ) \ double
   40:     2over 2over d> IF  2swap  THEN 2drop ;
   41: 
   42: : dmax ( d1 d2 -- d ) \ double
   43:     2over 2over d< IF  2swap  THEN 2drop ;
   44: 
   45: \ shell commands
   46: 
   47: 0 Value $?
   48: 
   49: : system ( addr u -- ) \ gforth
   50:     (system) throw TO $? ;
   51: : sh ( "..." -- ) \ gforth
   52:     '# parse cr system ;
   53: 
   54: \ stuff
   55: 
   56: : ]L ( compilation: n -- ; run-time: -- n )
   57:     \G equivalent to "] literal"
   58:     ] postpone literal ;
   59: 
   60: : in-dictionary? ( x -- f )
   61:     forthstart dictionary-end within ;
   62: 
   63: : in-return-stack? ( addr -- f )
   64:     rp0 @ swap - [ forthstart 6 cells + ]L @ u< ;

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