Annotation of gforth/source.fs, revision 1.11

1.1       anton       1: \ source location handling
                      2: 
1.7       anton       3: \ Copyright (C) 1995,1997 Free Software Foundation, Inc.
1.1       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
1.8       anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
1.3       pazsan     21: \ related stuff can be found in kernel.fs
1.1       anton      22: 
1.9       anton      23: \ this stuff is used by (at least) assert.fs and debugs.fs
1.1       anton      24: 
1.10      anton      25: : loadfilename#>str ( n -- addr u )
                     26:     included-files 2@ drop swap 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
1.11    ! anton      35:     drop 2drop 0 ;
1.10      anton      36: 
1.9       anton      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.
1.10      anton      40:     loadfilename 2@ str>loadfilename# postpone literal
1.9       anton      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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