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include <iosfwd> instead of <iostream> in header files
author John W. Eaton <jwe@octave.org>
date Tue, 10 Mar 2009 13:55:52 -0400
parents eb63fbe60fab
children cd96d29c5efa
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1 /*
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2
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3 Copyright (C) 1996, 1997, 2000, 2001, 2002, 2004, 2005, 2007, 2008, 2009
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4 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 3 of the License, or (at your
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11 option) any 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, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if !defined (octave_tree_h)
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25 #define octave_tree_h 1
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26
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27 #include <string>
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28
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29 #include <iosfwd>
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31 class octave_function;
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32 class tree_walker;
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33
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34 // Base class for the parse tree.
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35
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36 class
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37 tree
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38 {
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39 public:
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40
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41 tree (int l = -1, int c = -1)
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42 : line_num (l), column_num (c), bp (false) { }
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43
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44 virtual ~tree (void) { }
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45
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46 virtual int line (void) const { return line_num; }
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47
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48 virtual int column (void) const { return column_num; }
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49
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50 void line (int l) { line_num = l; }
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51
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52 void column (int c) { column_num = c; }
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53
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54 virtual void set_breakpoint (void) { bp = true; }
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55
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56 virtual void delete_breakpoint (void) { bp = false; }
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57
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58 bool is_breakpoint (void) const { return bp; }
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59
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60 std::string str_print_code (void);
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61
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62 virtual void accept (tree_walker& tw) = 0;
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63
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64 private:
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65
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66 // The input line and column where we found the text that was
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67 // eventually converted to this tree node.
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68 int line_num;
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69 int column_num;
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70
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71 // Breakpoint flag.
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72 bool bp;
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73
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74 // No copying!
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75
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76 tree (const tree&);
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77
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78 tree& operator = (const tree&);
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79 };
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80
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81 #endif
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82
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83 /*
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84 ;;; Local Variables: ***
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85 ;;; mode: C++ ***
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86 ;;; End: ***
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87 */