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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_tree_misc_h) |
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24 #define octave_tree_misc_h 1 |
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25 |
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26 #if defined (__GNUG__) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <SLList.h> |
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31 |
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32 class octave_value; |
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33 class octave_value_list; |
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34 |
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35 class tree_identifier; |
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36 class tree_index_expression; |
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37 class tree_va_return_list; |
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38 |
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39 class tree_walker; |
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40 |
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41 // Parameter lists. Used to hold the list of input and output |
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42 // parameters in a function definition. Elements are identifiers |
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43 // only. |
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44 |
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45 class |
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46 tree_parameter_list : public SLList<tree_identifier *> |
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47 { |
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48 public: |
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49 |
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50 tree_parameter_list (void) |
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51 : SLList<tree_identifier *> (), marked_for_varargs (0) { } |
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52 |
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53 tree_parameter_list (tree_identifier *t) |
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54 : SLList<tree_identifier *> (), marked_for_varargs (0) { append (t); } |
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55 |
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56 ~tree_parameter_list (void); |
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57 |
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58 void mark_as_formal_parameters (void); |
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59 |
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60 void mark_varargs (void) |
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61 { marked_for_varargs = 1; } |
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62 |
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63 bool takes_varargs (void) const |
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64 { return marked_for_varargs != 0; } |
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65 |
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66 void mark_varargs_only (void) |
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67 { marked_for_varargs = -1; } |
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68 |
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69 bool varargs_only (void) |
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70 { return (marked_for_varargs < 0); } |
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71 |
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72 void initialize_undefined_elements (octave_value& val); |
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73 |
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74 void define_from_arg_vector (const octave_value_list& args); |
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75 |
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76 bool is_defined (void); |
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77 |
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78 octave_value_list convert_to_const_vector (tree_va_return_list *vr_list); |
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79 |
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80 void accept (tree_walker& tw); |
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81 |
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82 private: |
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83 |
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84 int marked_for_varargs; |
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85 }; |
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86 |
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87 // Return lists. Used to hold the right hand sides of multiple |
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88 // assignment expressions. |
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89 |
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90 class |
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91 tree_return_list : public SLList<tree_index_expression *> |
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92 { |
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93 public: |
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94 |
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95 tree_return_list (void) |
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96 : SLList<tree_index_expression *> () { } |
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97 |
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98 tree_return_list (tree_index_expression *t) |
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99 : SLList<tree_index_expression *> () { append (t); } |
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100 |
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101 ~tree_return_list (void); |
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102 |
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103 void accept (tree_walker& tw); |
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104 }; |
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105 |
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106 class |
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107 tree_va_return_list : public SLList<octave_value> |
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108 { |
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109 public: |
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110 |
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111 tree_va_return_list (void) : SLList<octave_value> () { } |
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112 |
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113 ~tree_va_return_list (void) { } |
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114 }; |
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115 |
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116 #endif |
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117 |
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118 /* |
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119 ;;; Local Variables: *** |
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120 ;;; mode: C++ *** |
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121 ;;; End: *** |
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122 */ |
