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Annotation of gforth/ec/nesting.fs, revision 1.2

1.1       pazsan      1: \ nesting.fs displays nesting for primitive trace      12jun97jaw
                      2: 
1.2     ! anton       3: \ Copyright (C) 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: 
1.1       pazsan     21: Variable nestlevel
                     22: 
                     23: : main
                     24:   cr
                     25:   0 nestlevel !
                     26:   BEGIN
                     27:        key dup 9 u> WHILE
                     28:        dup
                     29:        CASE    ': OF   cr nestlevel @ spaces 1 nestlevel +! emit ENDOF
                     30:                '; OF   cr -1 nestlevel +! nestlevel @ spaces emit 
                     31:                        cr nestlevel @ spaces ENDOF
                     32:                dup OF  dup 31 u> IF emit THEN ENDOF
                     33:        ENDCASE
                     34:   REPEAT drop bye ;