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1 // tree-base.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #if defined (__GNUG__) |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include <iostream.h> |
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33 #include <assert.h> |
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34 |
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35 #include "tree-base.h" |
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36 |
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37 // Current indentation. |
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38 int tree_print_code::curr_print_indent_level = 0; |
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39 |
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40 // Nonzero means we are at the beginning of a line. |
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41 int tree_print_code::beginning_of_line = 1; |
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42 |
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43 // All print_code() functions should use this to print new lines. |
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44 |
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45 void |
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46 tree_print_code::print_code_new_line (ostream& os) |
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47 { |
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48 os << "\n"; |
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49 |
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50 beginning_of_line = 1; |
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51 } |
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52 |
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53 // Each print_code() function should call this before printing |
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54 // anything. |
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55 // |
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56 // This doesn't need to be fast, but isn't there a better way? |
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57 |
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58 void |
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59 tree_print_code::print_code_indent (ostream& os) |
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60 { |
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61 assert (curr_print_indent_level >= 0); |
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62 |
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63 if (beginning_of_line) |
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64 { |
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65 os.form ("%*s", curr_print_indent_level, ""); |
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66 beginning_of_line = 0; |
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67 } |
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68 } |
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69 |
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70 // For ressetting print_code state. |
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71 |
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72 void |
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73 tree_print_code::print_code_reset (void) |
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74 { |
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75 beginning_of_line = 1; |
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76 curr_print_indent_level = 0; |
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77 } |
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78 |
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79 /* |
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80 ;;; Local Variables: *** |
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81 ;;; mode: C++ *** |
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82 ;;; page-delimiter: "^/\\*" *** |
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83 ;;; End: *** |
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84 */ |
