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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_loop_h) |
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24 #define octave_tree_loop_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 class octave_value; |
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31 class octave_lvalue; |
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32 |
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33 class tree_argument_list; |
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34 class tree_expression; |
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35 class tree_statement_list; |
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36 |
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37 class tree_walker; |
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38 |
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39 #include "pt-cmd.h" |
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40 |
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41 // While. |
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42 |
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43 class |
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44 tree_while_command : public tree_command |
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45 { |
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46 public: |
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47 |
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48 tree_while_command (int l = -1, int c = -1) |
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49 : tree_command (l, c), expr (0), list (0) { } |
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50 |
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51 tree_while_command (tree_expression *e, int l = -1, int c = -1) |
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52 : tree_command (l, c), expr (e), list (0) { } |
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53 |
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54 tree_while_command (tree_expression *e, tree_statement_list *lst, |
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55 int l = -1, int c = -1) |
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56 : tree_command (l, c), expr (e), list (lst) { } |
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57 |
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58 ~tree_while_command (void); |
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59 |
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60 void eval (void); |
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61 |
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62 void eval_error (void); |
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63 |
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64 tree_expression *condition (void) { return expr; } |
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65 |
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66 tree_statement_list *body (void) { return list; } |
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67 |
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68 void accept (tree_walker& tw); |
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69 |
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70 private: |
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71 |
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72 // Expression to test. |
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73 tree_expression *expr; |
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74 |
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75 // List of commands to execute. |
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76 tree_statement_list *list; |
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77 }; |
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78 |
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79 // For. |
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80 |
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81 class |
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82 tree_simple_for_command : public tree_command |
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83 { |
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84 public: |
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85 |
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86 tree_simple_for_command (int l = -1, int c = -1) |
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87 : tree_command (l, c), lhs (0), expr (0), list (0) { } |
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88 |
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89 tree_simple_for_command (tree_expression *le, tree_expression *re, |
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90 tree_statement_list *lst, int l = -1, int c = -1) |
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91 : tree_command (l, c), lhs (le), expr (re), list (lst) { } |
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92 |
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93 ~tree_simple_for_command (void); |
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94 |
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95 void eval (void); |
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96 |
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97 void eval_error (void); |
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98 |
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99 tree_expression *left_hand_side (void) { return lhs; } |
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100 |
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101 tree_expression *control_expr (void) { return expr; } |
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102 |
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103 tree_statement_list *body (void) { return list; } |
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104 |
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105 void accept (tree_walker& tw); |
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106 |
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107 private: |
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108 |
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109 // Expression to modify. |
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110 tree_expression *lhs; |
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111 |
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112 // Expression to evaluate. |
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113 tree_expression *expr; |
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114 |
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115 // List of commands to execute. |
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116 tree_statement_list *list; |
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117 |
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118 void do_for_loop_once (octave_lvalue &ult, const octave_value& rhs, |
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119 bool& quit); |
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120 }; |
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121 |
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122 class |
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123 tree_complex_for_command : public tree_command |
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124 { |
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125 public: |
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126 |
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127 tree_complex_for_command (int l = -1, int c = -1) |
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128 : tree_command (l, c), lhs (0), expr (0), list (0) { } |
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129 |
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130 tree_complex_for_command (tree_argument_list *le, tree_expression *re, |
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131 tree_statement_list *lst, int l = -1, int c = -1) |
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132 : tree_command (l, c), lhs (le), expr (re), list (lst) { } |
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133 |
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134 ~tree_complex_for_command (void); |
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135 |
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136 void eval (void); |
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137 |
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138 void eval_error (void); |
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139 |
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140 tree_argument_list *left_hand_side (void) { return lhs; } |
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141 |
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142 tree_expression *control_expr (void) { return expr; } |
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143 |
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144 tree_statement_list *body (void) { return list; } |
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145 |
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146 void accept (tree_walker& tw); |
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147 |
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148 private: |
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149 |
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150 // Expression to modify. |
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151 tree_argument_list *lhs; |
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152 |
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153 // Expression to evaluate. |
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154 tree_expression *expr; |
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155 |
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156 // List of commands to execute. |
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157 tree_statement_list *list; |
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158 |
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159 void do_for_loop_once (octave_lvalue &val_ref, octave_lvalue &key_ref, |
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160 const octave_value& val, const octave_value& key, |
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161 bool& quit); |
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162 }; |
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163 |
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164 #endif |
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165 |
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166 /* |
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167 ;;; Local Variables: *** |
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168 ;;; mode: C++ *** |
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169 ;;; End: *** |
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170 */ |
