1: \ source location handling
2:
3: \ Copyright (C) 1995,1997,2003,2004,2007 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 3
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, see http://www.gnu.org/licenses/.
19:
20: \ related stuff can be found in kernel.fs
21:
22: \ this stuff is used by (at least) assert.fs and debugs.fs
23:
24: : loadfilename#>str ( n -- addr u )
25: included-files 2@ rot min 2* cells + 2@ ;
26:
27: : str>loadfilename# ( addr u -- n )
28: included-files 2@ 0 ?do ( addr u included-files )
29: i over >r 2* cells + 2@
30: 2over str= if
31: rdrop 2drop i unloop exit
32: endif
33: r> loop
34: drop 2drop 0 ;
35:
36: \ we encode line and character in one cell to keep the interface the same
37: : encode-pos ( nline nchar -- npos )
38: $ff min swap 8 lshift + ;
39:
40: : decode-pos ( npos -- nline nchar )
41: dup 8 rshift swap $ff and ;
42:
43: : current-sourcepos ( -- nfile npos )
44: sourcefilename str>loadfilename# sourceline# >in @ encode-pos ;
45:
46: : compile-sourcepos ( compile-time: -- ; run-time: -- nfile npos )
47: \ compile the current source position as literals: nfile is the
48: \ source file index, nline the line number within the file.
49: current-sourcepos
50: swap postpone literal
51: postpone literal ;
52:
53: : .sourcepos ( nfile npos -- )
54: \ print source position
55: swap loadfilename#>str type ': emit
56: base @ decimal
57: swap decode-pos swap 0 .r ': emit 0 .r
58: base ! ;
59:
60:
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