File:  [gforth] / gforth / source.fs
Revision 1.12: download - view: text, annotated - select for diffs
Tue Jan 21 10:24:44 2003 UTC (16 years, 10 months ago) by anton
Branches: MAIN
CVS tags: HEAD
loadfilename#>str is now safer
documented the interaction of markers and ~~ and assertions

    1: \ source location handling
    2: 
    3: \ Copyright (C) 1995,1997 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: 
   21: \ related stuff can be found in kernel.fs
   22: 
   23: \ this stuff is used by (at least) assert.fs and debugs.fs
   24: 
   25: : loadfilename#>str ( n -- addr u )
   26:     included-files 2@ rot min 2* cells + 2@ ;
   27: 
   28: : str>loadfilename# ( addr u -- n )
   29:     included-files 2@ 0 ?do ( addr u included-files )
   30: 	i over >r 2* cells + 2@
   31: 	2over str= if
   32: 	    rdrop 2drop i unloop exit
   33: 	endif
   34: 	r> loop
   35:     drop 2drop 0 ;
   36: 
   37: : compile-sourcepos ( compile-time: -- ; run-time: -- nfile nline )
   38:     \ compile the current source position as literals: nfile is the
   39:     \ source file index, nline the line number within the file.
   40:     loadfilename 2@ str>loadfilename# postpone literal
   41:     sourceline# postpone literal ;
   42: 
   43: : .sourcepos ( nfile nline -- )
   44:     \ print source position
   45:     swap loadfilename#>str type ." :"
   46:     base @ decimal swap 0 .r base ! ;

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