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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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4153
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28 #include "quit.h" |
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29 |
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30 #include "error.h" |
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31 #include "gripes.h" |
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32 #include "oct-map.h" |
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33 #include "oct-lvalue.h" |
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34 #include "ov.h" |
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35 #include "pt-arg-list.h" |
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3770
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36 #include "pt-bp.h" |
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37 #include "pt-cmd.h" |
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38 #include "pt-exp.h" |
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2985
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39 #include "pt-jump.h" |
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40 #include "pt-loop.h" |
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41 #include "pt-stmt.h" |
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42 #include "pt-walk.h" |
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3877
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43 #include "unwind-prot.h" |
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44 |
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45 // TRUE means we are evaluating some kind of looping construct. |
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46 bool evaluating_looping_command = false; |
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47 |
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48 // Decide if it's time to quit a for or while loop. |
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49 static inline bool |
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50 quit_loop_now (void) |
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51 { |
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4153
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52 OCTAVE_QUIT; |
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53 |
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54 // Maybe handle `continue N' someday... |
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55 |
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4207
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56 if (tree_continue_command::continuing) |
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57 tree_continue_command::continuing--; |
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58 |
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59 bool quit = (error_state |
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60 || tree_return_command::returning |
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61 || tree_break_command::breaking |
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62 || tree_continue_command::continuing); |
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63 |
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64 if (tree_break_command::breaking) |
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65 tree_break_command::breaking--; |
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66 |
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67 return quit; |
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68 } |
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69 |
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70 // While. |
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71 |
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72 tree_while_command::~tree_while_command (void) |
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73 { |
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74 delete expr; |
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75 delete list; |
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3665
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76 delete lead_comm; |
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77 delete trail_comm; |
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78 } |
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79 |
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80 void |
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81 tree_while_command::eval (void) |
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82 { |
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83 if (error_state) |
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84 return; |
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85 |
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3877
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86 unwind_protect::begin_frame ("while_command::eval"); |
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87 |
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88 unwind_protect_bool (evaluating_looping_command); |
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89 |
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90 evaluating_looping_command = true; |
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91 |
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92 if (! expr) |
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93 panic_impossible (); |
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94 |
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95 for (;;) |
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96 { |
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97 if (expr->is_logically_true ("while")) |
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98 { |
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99 if (list) |
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100 { |
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101 list->eval (); |
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102 |
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103 if (error_state) |
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104 { |
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105 eval_error (); |
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106 goto cleanup; |
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107 } |
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108 } |
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109 |
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110 if (quit_loop_now ()) |
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111 break; |
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112 } |
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113 else |
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114 break; |
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115 } |
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116 |
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117 cleanup: |
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118 unwind_protect::run_frame ("while_command::eval"); |
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119 } |
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120 |
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121 void |
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122 tree_while_command::eval_error (void) |
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123 { |
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124 ::error ("evaluating while command near line %d, column %d", |
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125 line (), column ()); |
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2982
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126 } |
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127 |
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128 tree_command * |
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129 tree_while_command::dup (symbol_table *sym_tab) |
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130 { |
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131 return new tree_while_command (expr ? expr->dup (sym_tab) : 0, |
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132 list ? list->dup (sym_tab) : 0, |
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133 lead_comm ? lead_comm->dup () : 0, |
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134 trail_comm ? trail_comm->dup (): 0, |
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135 line (), column ()); |
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136 } |
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137 |
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2982
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138 void |
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139 tree_while_command::accept (tree_walker& tw) |
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140 { |
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141 tw.visit_while_command (*this); |
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142 } |
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143 |
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3484
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144 // Do-Until |
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145 |
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146 void |
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147 tree_do_until_command::eval (void) |
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148 { |
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149 if (error_state) |
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150 return; |
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151 |
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3877
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152 unwind_protect::begin_frame ("do_until_command::eval"); |
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153 |
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154 unwind_protect_bool (evaluating_looping_command); |
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155 |
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156 evaluating_looping_command = true; |
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157 |
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3484
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158 if (! expr) |
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159 panic_impossible (); |
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160 |
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161 for (;;) |
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162 { |
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3770
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163 MAYBE_DO_BREAKPOINT; |
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164 |
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3484
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165 if (list) |
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166 { |
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167 list->eval (); |
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168 |
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169 if (error_state) |
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170 { |
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171 eval_error (); |
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3877
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172 goto cleanup; |
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3484
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173 } |
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174 } |
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175 |
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176 if (quit_loop_now () || expr->is_logically_true ("do-until")) |
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177 break; |
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178 } |
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179 |
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180 cleanup: |
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181 unwind_protect::run_frame ("do_until_command::eval"); |
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3484
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182 } |
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183 |
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184 void |
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185 tree_do_until_command::eval_error (void) |
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186 { |
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3965
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187 ::error ("evaluating do-until command near line %d, column %d", |
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188 line (), column ()); |
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3484
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189 } |
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190 |
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5861
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191 tree_command * |
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192 tree_do_until_command::dup (symbol_table *sym_tab) |
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193 { |
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194 return new tree_do_until_command (expr ? expr->dup (sym_tab) : 0, |
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195 list ? list->dup (sym_tab) : 0, |
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196 lead_comm ? lead_comm->dup () : 0, |
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197 trail_comm ? trail_comm->dup (): 0, |
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198 line (), column ()); |
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199 } |
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200 |
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3484
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201 void |
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202 tree_do_until_command::accept (tree_walker& tw) |
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203 { |
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204 tw.visit_do_until_command (*this); |
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205 } |
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206 |
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2982
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207 // For. |
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208 |
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209 tree_simple_for_command::~tree_simple_for_command (void) |
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210 { |
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211 delete expr; |
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212 delete list; |
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3665
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213 delete lead_comm; |
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214 delete trail_comm; |
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2982
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215 } |
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216 |
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217 inline void |
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218 tree_simple_for_command::do_for_loop_once (octave_lvalue& ult, |
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219 const octave_value& rhs, |
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220 bool& quit) |
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221 { |
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3538
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222 ult.assign (octave_value::op_asn_eq, rhs); |
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2982
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223 |
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224 if (! error_state) |
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225 { |
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226 if (list) |
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227 { |
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228 list->eval (); |
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229 |
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230 if (error_state) |
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231 eval_error (); |
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232 } |
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233 } |
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234 else |
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235 eval_error (); |
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236 |
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237 quit = quit_loop_now (); |
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238 } |
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239 |
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6602
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240 #define DO_ND_LOOP(MTYPE, TYPE, CONV, ARG) \ |
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2982
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241 do \ |
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242 { \ |
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6602
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243 dim_vector dv = ARG.dims (); \ |
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2982
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244 \ |
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6602
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245 bool quit = false; \ |
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246 \ |
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247 TYPE *atmp = ARG.fortran_vec (); \ |
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248 \ |
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5570
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249 octave_idx_type steps = dv(1); \ |
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4911
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250 \ |
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6602
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251 octave_idx_type nrows = dv(0); \ |
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252 \ |
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253 int ndims = dv.length (); \ |
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254 if (ndims > 2) \ |
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255 { \ |
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256 for (int i = 2; i < ndims; i++) \ |
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257 steps *= dv(i); \ |
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258 dv(1) = steps; \ |
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259 dv.resize (2); \ |
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260 } \ |
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4911
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261 \ |
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6602
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262 if (steps > 0) \ |
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263 { \ |
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264 if (nrows == 0) \ |
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265 { \ |
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6665
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266 MTYPE tarray (dim_vector (0, 1)); \ |
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267 \ |
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268 octave_value val (tarray); \ |
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6602
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269 \ |
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270 for (octave_idx_type i = 0; i < steps; i++) \ |
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271 { \ |
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272 MAYBE_DO_BREAKPOINT; \ |
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5570
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273 \ |
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6602
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274 do_for_loop_once (ult, val, quit); \ |
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5570
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275 \ |
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6602
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276 if (quit) \ |
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277 break; \ |
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278 } \ |
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279 } \ |
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280 else if (nrows == 1) \ |
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281 { \ |
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282 for (octave_idx_type i = 0; i < steps; i++) \ |
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283 { \ |
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284 MAYBE_DO_BREAKPOINT; \ |
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5570
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285 \ |
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6602
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286 octave_value val (CONV (*atmp++)); \ |
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287 \ |
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288 do_for_loop_once (ult, val, quit); \ |
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5570
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289 \ |
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6602
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290 if (quit) \ |
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291 break; \ |
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292 } \ |
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293 } \ |
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294 else \ |
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295 { \ |
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296 if (ndims > 2) \ |
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297 ARG = ARG.reshape (dv); \ |
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4911
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298 \ |
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6602
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299 MTYPE tmp (dim_vector (nrows, 1)); \ |
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300 \ |
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301 TYPE *ftmp = tmp.fortran_vec (); \ |
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4911
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302 \ |
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6602
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303 for (octave_idx_type i = 0; i < steps; i++) \ |
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304 { \ |
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305 MAYBE_DO_BREAKPOINT; \ |
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306 \ |
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307 for (int j = 0; j < nrows; j++) \ |
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308 ftmp[j] = *atmp++; \ |
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309 \ |
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310 octave_value val (tmp); \ |
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4911
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311 \ |
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6602
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312 do_for_loop_once (ult, val, quit); \ |
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313 quit = (i == steps - 1 ? true : quit); \ |
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4911
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314 \ |
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6602
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315 if (quit) \ |
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316 break; \ |
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317 } \ |
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318 } \ |
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319 } \ |
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4911
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320 } \ |
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321 while (0) |
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322 |
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2982
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323 void |
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324 tree_simple_for_command::eval (void) |
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325 { |
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326 if (error_state) |
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327 return; |
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328 |
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3877
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329 unwind_protect::begin_frame ("simple_for_command::eval"); |
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330 |
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331 unwind_protect_bool (evaluating_looping_command); |
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332 |
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333 evaluating_looping_command = true; |
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334 |
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2982
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335 octave_value rhs = expr->rvalue (); |
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336 |
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337 if (error_state || rhs.is_undefined ()) |
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338 { |
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339 eval_error (); |
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3877
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340 goto cleanup; |
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2982
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341 } |
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342 |
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3877
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343 { |
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344 octave_lvalue ult = lhs->lvalue (); |
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3180
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345 |
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3877
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346 if (error_state) |
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347 { |
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348 eval_error (); |
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349 goto cleanup; |
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350 } |
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351 |
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352 if (rhs.is_range ()) |
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353 { |
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354 Range rng = rhs.range_value (); |
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3180
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355 |
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5275
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356 octave_idx_type steps = rng.nelem (); |
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3877
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357 double b = rng.base (); |
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358 double increment = rng.inc (); |
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6602
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359 bool quit = false; |
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360 double tmp_val = b; |
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3770
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361 |
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6602
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362 for (octave_idx_type i = 0; i < steps; i++, tmp_val += increment) |
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3877
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363 { |
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364 MAYBE_DO_BREAKPOINT; |
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3180
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365 |
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3877
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366 octave_value val (tmp_val); |
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3180
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367 |
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3877
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368 do_for_loop_once (ult, val, quit); |
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3180
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369 |
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3877
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370 if (quit) |
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371 break; |
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372 } |
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373 } |
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374 else if (rhs.is_scalar_type ()) |
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375 { |
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376 bool quit = false; |
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377 |
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378 MAYBE_DO_BREAKPOINT; |
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2982
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379 |
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3877
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380 do_for_loop_once (ult, rhs, quit); |
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381 } |
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382 else if (rhs.is_string ()) |
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383 { |
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384 charMatrix chm_tmp = rhs.char_matrix_value (); |
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5275
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385 octave_idx_type nr = chm_tmp.rows (); |
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386 octave_idx_type steps = chm_tmp.columns (); |
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6602
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387 bool quit = false; |
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3215
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388 |
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3877
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389 if (error_state) |
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390 goto cleanup; |
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3215
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391 |
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3877
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392 if (nr == 1) |
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6602
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393 { |
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394 for (octave_idx_type i = 0; i < steps; i++) |
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395 { |
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396 MAYBE_DO_BREAKPOINT; |
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397 |
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398 octave_value val (chm_tmp.xelem (0, i)); |
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399 |
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400 do_for_loop_once (ult, val, quit); |
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401 |
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402 if (quit) |
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403 break; |
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404 } |
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405 } |
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3877
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406 else |
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407 { |
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5275
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408 for (octave_idx_type i = 0; i < steps; i++) |
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3877
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409 { |
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410 MAYBE_DO_BREAKPOINT; |
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3770
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411 |
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3877
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412 octave_value val (chm_tmp.extract (0, i, nr-1, i), true); |
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3215
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413 |
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3877
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414 do_for_loop_once (ult, val, quit); |
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3215
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415 |
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3877
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416 if (quit) |
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417 break; |
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418 } |
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419 } |
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420 } |
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421 else if (rhs.is_matrix_type ()) |
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422 { |
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3998
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423 if (rhs.is_real_type ()) |
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3877
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424 { |
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6602
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425 NDArray m_tmp = rhs.array_value (); |
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426 |
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427 if (error_state) |
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428 goto cleanup; |
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429 |
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430 DO_ND_LOOP (NDArray, double, , m_tmp); |
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3877
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431 } |
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432 else |
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433 { |
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6602
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434 ComplexNDArray cm_tmp = rhs.complex_array_value (); |
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5570
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435 |
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6602
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436 if (error_state) |
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437 goto cleanup; |
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5570
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438 |
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6602
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439 DO_ND_LOOP (ComplexNDArray, Complex, , cm_tmp); |
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5246
|
440 } |
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3877
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441 } |
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442 else if (rhs.is_map ()) |
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443 { |
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444 Octave_map tmp_val (rhs.map_value ()); |
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2982
|
445 |
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6602
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446 bool quit = false; |
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447 |
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4219
|
448 for (Octave_map::iterator p = tmp_val.begin (); |
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449 p != tmp_val.end (); |
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450 p++) |
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3877
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451 { |
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452 MAYBE_DO_BREAKPOINT; |
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3770
|
453 |
|
4513
|
454 Cell val_lst = tmp_val.contents (p); |
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4121
|
455 |
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|
456 octave_value val |
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457 = (val_lst.length () == 1) ? val_lst(0) : octave_value (val_lst); |
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2982
|
458 |
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3877
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459 do_for_loop_once (ult, val, quit); |
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2982
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460 |
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3877
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461 if (quit) |
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462 break; |
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463 } |
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464 } |
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4911
|
465 else if (rhs.is_cell ()) |
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|
466 { |
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467 Cell c_tmp = rhs.cell_value (); |
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5248
|
468 |
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6602
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469 DO_ND_LOOP (Cell, octave_value, Cell, c_tmp); |
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4911
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470 } |
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3877
|
471 else |
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472 { |
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|
473 ::error ("invalid type in for loop expression near line %d, column %d", |
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|
474 line (), column ()); |
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|
475 } |
|
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476 } |
|
|
477 |
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|
478 cleanup: |
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|
479 unwind_protect::run_frame ("simple_for_command::eval"); |
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2982
|
480 } |
|
|
481 |
|
|
482 void |
|
|
483 tree_simple_for_command::eval_error (void) |
|
|
484 { |
|
3965
|
485 ::error ("evaluating for command near line %d, column %d", |
|
|
486 line (), column ()); |
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2982
|
487 } |
|
|
488 |
|
5861
|
489 tree_command * |
|
|
490 tree_simple_for_command::dup (symbol_table *sym_tab) |
|
|
491 { |
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492 return new tree_simple_for_command (lhs ? lhs->dup (sym_tab) : 0, |
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493 expr ? expr->dup (sym_tab) : 0, |
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494 list ? list->dup (sym_tab) : 0, |
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495 lead_comm ? lead_comm->dup () : 0, |
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496 trail_comm ? trail_comm->dup () : 0, |
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497 line (), column ()); |
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498 } |
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499 |
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2982
|
500 void |
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501 tree_simple_for_command::accept (tree_walker& tw) |
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502 { |
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503 tw.visit_simple_for_command (*this); |
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504 } |
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505 |
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506 tree_complex_for_command::~tree_complex_for_command (void) |
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507 { |
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508 delete expr; |
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509 delete list; |
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3665
|
510 delete lead_comm; |
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511 delete trail_comm; |
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2982
|
512 } |
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513 |
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|
514 void |
|
|
515 tree_complex_for_command::do_for_loop_once (octave_lvalue &val_ref, |
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516 octave_lvalue &key_ref, |
|
|
517 const octave_value& val, |
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518 const octave_value& key, |
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519 bool& quit) |
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520 { |
|
|
521 quit = false; |
|
|
522 |
|
3538
|
523 val_ref.assign (octave_value::op_asn_eq, val); |
|
|
524 key_ref.assign (octave_value::op_asn_eq, key); |
|
2982
|
525 |
|
|
526 if (! error_state) |
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|
527 { |
|
|
528 if (list) |
|
|
529 { |
|
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530 list->eval (); |
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|
531 |
|
|
532 if (error_state) |
|
|
533 eval_error (); |
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|
534 } |
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|
535 } |
|
|
536 else |
|
|
537 eval_error (); |
|
|
538 |
|
|
539 quit = quit_loop_now (); |
|
|
540 } |
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|
541 |
|
|
542 void |
|
|
543 tree_complex_for_command::eval (void) |
|
|
544 { |
|
|
545 if (error_state) |
|
|
546 return; |
|
|
547 |
|
3877
|
548 unwind_protect::begin_frame ("complex_for_command::eval"); |
|
|
549 |
|
|
550 unwind_protect_bool (evaluating_looping_command); |
|
|
551 |
|
|
552 evaluating_looping_command = true; |
|
|
553 |
|
2982
|
554 octave_value rhs = expr->rvalue (); |
|
|
555 |
|
|
556 if (error_state || rhs.is_undefined ()) |
|
|
557 { |
|
|
558 eval_error (); |
|
3877
|
559 goto cleanup; |
|
2982
|
560 } |
|
|
561 |
|
|
562 if (rhs.is_map ()) |
|
|
563 { |
|
|
564 // Cycle through structure elements. First element of id_list |
|
|
565 // is set to value and the second is set to the name of the |
|
|
566 // structure element. |
|
|
567 |
|
4219
|
568 tree_argument_list::iterator p = lhs->begin (); |
|
|
569 tree_expression *elt = *p++; |
|
2982
|
570 octave_lvalue val_ref = elt->lvalue (); |
|
4219
|
571 elt = *p; |
|
2982
|
572 octave_lvalue key_ref = elt->lvalue (); |
|
|
573 |
|
|
574 Octave_map tmp_val (rhs.map_value ()); |
|
|
575 |
|
4300
|
576 for (Octave_map::iterator q = tmp_val.begin (); q != tmp_val.end (); q++) |
|
2982
|
577 { |
|
4219
|
578 octave_value key = tmp_val.key (q); |
|
4121
|
579 |
|
4513
|
580 Cell val_lst = tmp_val.contents (q); |
|
4121
|
581 |
|
5275
|
582 octave_idx_type n = tmp_val.numel (); |
|
4121
|
583 |
|
|
584 octave_value val = (n == 1) ? val_lst(0) : octave_value (val_lst); |
|
2982
|
585 |
|
3770
|
586 MAYBE_DO_BREAKPOINT; |
|
|
587 |
|
2982
|
588 bool quit = false; |
|
|
589 |
|
|
590 do_for_loop_once (key_ref, val_ref, key, val, quit); |
|
|
591 |
|
|
592 if (quit) |
|
|
593 break; |
|
|
594 } |
|
|
595 } |
|
|
596 else |
|
|
597 error ("in statement `for [X, Y] = VAL', VAL must be a structure"); |
|
3877
|
598 |
|
|
599 cleanup: |
|
|
600 unwind_protect::run_frame ("complex_for_command::eval"); |
|
2982
|
601 } |
|
|
602 |
|
|
603 void |
|
|
604 tree_complex_for_command::eval_error (void) |
|
|
605 { |
|
3965
|
606 ::error ("evaluating for command near line %d, column %d", |
|
|
607 line (), column ()); |
|
2982
|
608 } |
|
|
609 |
|
5861
|
610 tree_command * |
|
|
611 tree_complex_for_command::dup (symbol_table *sym_tab) |
|
|
612 { |
|
|
613 return new tree_complex_for_command (lhs ? lhs->dup (sym_tab) : 0, |
|
|
614 expr ? expr->dup (sym_tab) : 0, |
|
|
615 list ? list->dup (sym_tab) : 0, |
|
|
616 lead_comm ? lead_comm->dup () : 0, |
|
|
617 trail_comm ? trail_comm->dup () : 0, |
|
|
618 line (), column ()); |
|
|
619 } |
|
|
620 |
|
2982
|
621 void |
|
|
622 tree_complex_for_command::accept (tree_walker& tw) |
|
|
623 { |
|
|
624 tw.visit_complex_for_command (*this); |
|
|
625 } |
|
|
626 |
|
|
627 /* |
|
|
628 ;;; Local Variables: *** |
|
|
629 ;;; mode: C++ *** |
|
|
630 ;;; End: *** |
|
|
631 */ |
