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1 // parse.h -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993 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 (_parse_h) |
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25 #define _parse_h 1 |
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26 |
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27 #include "SLStack.h" |
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28 |
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29 extern void discard_until (char c); |
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30 extern void reset_parser (void); |
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31 extern int yylex (void); |
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32 extern int yyparse (void); |
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33 |
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34 class tree; |
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35 class tree_matrix; |
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36 class tree_identifier; |
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37 class symbol_table; |
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38 |
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39 // Identifier to define if we are reading an M-fie. |
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40 extern tree_identifier *id_to_define; |
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41 |
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42 // Nonzero means we're in the middle of defining a function. |
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43 extern int defining_func; |
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44 |
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45 // Nonzero means we're in the middle of defining a loop. |
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46 extern int looping; |
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47 |
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48 // Nonzero means we're in the middle of defining a conditional expression. |
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49 extern int iffing; |
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50 |
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51 // Nonzero means we need to do some extra lookahead to avoid being |
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52 // screwed by bogus function syntax. |
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53 extern int maybe_screwed; |
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54 |
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55 // Nonzero means we need to do some extra lookahead to avoid being |
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56 // screwed by bogus function syntax. |
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57 extern int maybe_screwed_again; |
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58 |
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59 // Temporary symbol table pointer used to cope with bogus function syntax. |
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60 extern symbol_table *tmp_local_sym_tab; |
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61 |
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62 // Stack to hold list of literal matrices. |
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63 extern SLStack <tree_matrix *> ml; |
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64 |
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65 // A nonzero element corresponding to an element of ml means we just |
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66 // started reading a new matrix. This should probably be part of a |
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67 // new struct for matrix lists... |
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68 extern SLStack <int> mlnm; |
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69 |
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70 // Nonzero means print parser debugging info (-d). |
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71 extern int yydebug; |
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72 |
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73 // The current input line number. |
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74 extern int input_line_number; |
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75 |
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76 // The column of the current token. |
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77 extern int current_input_column; |
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78 |
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79 #define HELP_BUF_LENGTH 8192 |
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80 |
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81 // Buffer for help text snagged from M-files. |
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82 extern char help_buf [HELP_BUF_LENGTH]; |
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83 |
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84 // Nonzero means we're working on a plot command. |
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85 extern int plotting; |
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86 |
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87 // Nonzero means we're looking at the range part of a plot command. |
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88 extern int in_plot_range; |
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89 |
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90 // Nonzero means we're looking at the using part of a plot command. |
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91 extern int in_plot_using; |
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92 |
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93 // Nonzero means we're looking at the style part of a plot command. |
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94 extern int in_plot_style; |
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95 |
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96 #endif |
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97 |
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98 /* |
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99 ;;; Local Variables: *** |
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100 ;;; mode: C++ *** |
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101 ;;; page-delimiter: "^/\\*" *** |
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102 ;;; End: *** |
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103 */ |
