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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 class octave_value; |
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27 class octave_value_list; |
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28 |
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29 class tree_identifier; |
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30 class tree_index_expression; |
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31 class tree_va_return_list; |
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32 |
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33 class tree_walker; |
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34 |
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35 #include "base-list.h" |
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36 |
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37 // Parameter lists. Used to hold the list of input and output |
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38 // parameters in a function definition. Elements are identifiers |
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39 // only. |
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40 |
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41 class |
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42 tree_parameter_list : public octave_base_list<tree_identifier *> |
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43 { |
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44 public: |
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45 |
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46 tree_parameter_list (void) |
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47 : marked_for_varargs (0) { } |
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48 |
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49 tree_parameter_list (tree_identifier *t) |
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50 : marked_for_varargs (0) { append (t); } |
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51 |
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52 ~tree_parameter_list (void); |
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53 |
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54 void mark_as_formal_parameters (void); |
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55 |
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56 void mark_varargs (void) { marked_for_varargs = 1; } |
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57 |
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58 bool takes_varargs (void) const { return marked_for_varargs != 0; } |
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59 |
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60 void mark_varargs_only (void) { marked_for_varargs = -1; } |
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61 |
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62 bool varargs_only (void) { return (marked_for_varargs < 0); } |
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63 |
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64 void initialize_undefined_elements (const std::string& warnfor, |
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65 int nargout, const octave_value& val); |
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66 |
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67 void define_from_arg_vector (const octave_value_list& args); |
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68 |
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69 void undefine (void); |
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70 |
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71 bool is_defined (void); |
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72 |
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73 octave_value_list convert_to_const_vector (tree_va_return_list *vr_list); |
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74 |
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75 void accept (tree_walker& tw); |
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76 |
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77 private: |
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78 |
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79 int marked_for_varargs; |
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80 |
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81 // No copying! |
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82 |
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83 tree_parameter_list (const tree_parameter_list&); |
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84 |
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85 tree_parameter_list& operator = (const tree_parameter_list&); |
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86 }; |
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87 |
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88 // Return lists. Used to hold the right hand sides of multiple |
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89 // assignment expressions. |
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90 |
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91 class |
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92 tree_return_list : public octave_base_list<tree_index_expression *> |
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93 { |
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94 public: |
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95 |
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96 tree_return_list (void) { } |
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97 |
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98 tree_return_list (tree_index_expression *t) { append (t); } |
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99 |
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100 ~tree_return_list (void); |
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101 |
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102 void accept (tree_walker& tw); |
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103 |
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104 private: |
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105 |
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106 // No copying! |
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107 |
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108 tree_return_list (const tree_return_list&); |
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109 |
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110 tree_return_list& operator = (const tree_return_list&); |
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111 }; |
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112 |
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113 class |
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114 tree_va_return_list : public octave_base_list<octave_value> |
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115 { |
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116 public: |
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117 |
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118 tree_va_return_list (void) { } |
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119 |
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120 ~tree_va_return_list (void) { } |
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121 |
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122 private: |
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123 |
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124 // No copying! |
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125 |
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126 tree_va_return_list (const tree_va_return_list&); |
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127 |
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128 tree_va_return_list& operator = (const tree_va_return_list&); |
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129 }; |
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130 |
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131 #endif |
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132 |
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133 /* |
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134 ;;; Local Variables: *** |
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135 ;;; mode: C++ *** |
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136 ;;; End: *** |
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137 */ |
