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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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4192
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23 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include "error.h" |
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32 #include "input.h" |
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33 #include "ov-usr-fcn.h" |
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34 #include "pt-all.h" |
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35 |
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36 void |
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37 tree_checker::visit_argument_list (tree_argument_list& lst) |
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38 { |
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39 tree_argument_list::iterator p = lst.begin (); |
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40 |
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41 while (p != lst.end ()) |
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42 { |
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43 tree_expression *elt = *p++; |
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44 |
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45 if (elt) |
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46 { |
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47 if (do_lvalue_check && ! elt->lvalue_ok ()) |
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48 gripe ("invalid lvalue in multiple assignment", elt->line ()); |
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49 } |
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50 } |
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51 } |
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52 |
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53 void |
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54 tree_checker::visit_binary_expression (tree_binary_expression& expr) |
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55 { |
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56 tree_expression *op1 = expr.lhs (); |
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57 |
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58 if (op1) |
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59 op1->accept (*this); |
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60 |
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61 tree_expression *op2 = expr.rhs (); |
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62 |
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63 if (op2) |
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64 op2->accept (*this); |
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65 } |
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66 |
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67 void |
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68 tree_checker::visit_break_command (tree_break_command&) |
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69 { |
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70 } |
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71 |
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72 void |
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73 tree_checker::visit_colon_expression (tree_colon_expression& expr) |
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74 { |
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75 tree_expression *op1 = expr.base (); |
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76 |
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77 if (op1) |
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78 op1->accept (*this); |
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79 |
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80 tree_expression *op3 = expr.increment (); |
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81 |
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82 if (op3) |
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83 op3->accept (*this); |
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84 |
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85 tree_expression *op2 = expr.limit (); |
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86 |
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87 if (op2) |
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88 op2->accept (*this); |
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89 } |
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90 |
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91 void |
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92 tree_checker::visit_continue_command (tree_continue_command&) |
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93 { |
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94 } |
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95 |
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96 void |
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97 tree_checker::visit_decl_command (tree_decl_command& cmd) |
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98 { |
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99 tree_decl_init_list *init_list = cmd.initializer_list (); |
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100 |
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101 if (init_list) |
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102 init_list->accept (*this); |
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103 } |
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104 |
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105 void |
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106 tree_checker::visit_decl_elt (tree_decl_elt& cmd) |
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107 { |
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108 tree_identifier *id = cmd.ident (); |
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109 |
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110 if (id) |
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111 id->accept (*this); |
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112 |
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113 tree_expression *expr = cmd.expression (); |
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114 |
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115 if (expr) |
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116 expr->accept (*this); |
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117 } |
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118 |
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119 void |
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120 tree_checker::visit_decl_init_list (tree_decl_init_list& lst) |
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121 { |
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122 tree_decl_init_list::iterator p = lst.begin (); |
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123 |
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124 while (p != lst.end ()) |
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125 { |
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126 tree_decl_elt *elt = *p++; |
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127 |
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128 if (elt) |
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129 elt->accept (*this); |
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130 } |
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131 } |
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132 |
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133 void |
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134 tree_checker::visit_simple_for_command (tree_simple_for_command& cmd) |
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135 { |
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136 tree_expression *lhs = cmd.left_hand_side (); |
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137 |
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138 if (lhs) |
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139 { |
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140 if (! lhs->lvalue_ok ()) |
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141 gripe ("invalid lvalue in for command", cmd.line ()); |
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142 } |
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143 |
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144 tree_expression *expr = cmd.control_expr (); |
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145 |
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146 if (expr) |
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147 expr->accept (*this); |
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148 |
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149 tree_statement_list *list = cmd.body (); |
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150 |
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151 if (list) |
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152 list->accept (*this); |
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153 } |
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154 |
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155 void |
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156 tree_checker::visit_complex_for_command (tree_complex_for_command& cmd) |
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157 { |
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158 tree_argument_list *lhs = cmd.left_hand_side (); |
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159 |
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160 if (lhs) |
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161 { |
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162 int len = lhs->length (); |
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163 |
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164 if (len == 0 || len > 2) |
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165 gripe ("invalid number of output arguments in for command", |
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166 cmd.line ()); |
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167 |
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168 do_lvalue_check = true; |
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169 |
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170 lhs->accept (*this); |
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171 |
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172 do_lvalue_check = false; |
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173 } |
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174 |
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175 tree_expression *expr = cmd.control_expr (); |
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176 |
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177 if (expr) |
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178 expr->accept (*this); |
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179 |
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180 tree_statement_list *list = cmd.body (); |
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181 |
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182 if (list) |
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183 list->accept (*this); |
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184 } |
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185 |
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186 void |
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187 tree_checker::visit_octave_user_function (octave_user_function& fcn) |
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188 { |
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189 tree_statement_list *cmd_list = fcn.body (); |
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190 |
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191 if (cmd_list) |
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192 cmd_list->accept (*this); |
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193 } |
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194 |
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195 void |
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196 tree_checker::visit_identifier (tree_identifier& /* id */) |
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197 { |
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198 } |
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199 |
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200 void |
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201 tree_checker::visit_if_clause (tree_if_clause& cmd) |
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202 { |
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203 tree_expression *expr = cmd.condition (); |
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204 |
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205 if (expr) |
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206 expr->accept (*this); |
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207 |
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208 tree_statement_list *list = cmd.commands (); |
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209 |
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210 if (list) |
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211 list->accept (*this); |
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212 } |
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213 |
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214 void |
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215 tree_checker::visit_if_command (tree_if_command& cmd) |
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216 { |
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217 tree_if_command_list *list = cmd.cmd_list (); |
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218 |
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219 if (list) |
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220 list->accept (*this); |
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221 } |
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222 |
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223 void |
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224 tree_checker::visit_if_command_list (tree_if_command_list& lst) |
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225 { |
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226 tree_if_command_list::iterator p = lst.begin (); |
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227 |
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228 while (p != lst.end ()) |
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229 { |
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230 tree_if_clause *elt = *p++; |
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231 |
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232 if (elt) |
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233 elt->accept (*this); |
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234 } |
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235 } |
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236 |
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237 void |
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238 tree_checker::visit_index_expression (tree_index_expression& expr) |
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239 { |
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240 tree_expression *e = expr.expression (); |
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241 |
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242 if (e) |
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243 e->accept (*this); |
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244 |
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245 std::list<tree_argument_list *> lst = expr.arg_lists (); |
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246 |
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247 std::list<tree_argument_list *>::iterator p = lst.begin (); |
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248 |
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249 while (p != lst.end ()) |
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250 { |
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251 tree_argument_list *elt = *p++; |
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252 |
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253 if (elt) |
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254 elt->accept (*this); |
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255 } |
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256 } |
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257 |
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258 void |
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259 tree_checker::visit_matrix (tree_matrix& lst) |
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260 { |
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261 tree_matrix::iterator p = lst.begin (); |
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262 |
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263 while (p != lst.end ()) |
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264 { |
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265 tree_argument_list *elt = *p++; |
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266 |
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267 if (elt) |
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268 elt->accept (*this); |
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269 } |
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270 } |
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271 |
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272 void |
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273 tree_checker::visit_cell (tree_cell& lst) |
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274 { |
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275 tree_matrix::iterator p = lst.begin (); |
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276 |
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277 while (p != lst.end ()) |
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278 { |
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279 tree_argument_list *elt = *p++; |
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280 |
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281 if (elt) |
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282 elt->accept (*this); |
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283 } |
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284 } |
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285 |
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286 void |
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287 tree_checker::visit_multi_assignment (tree_multi_assignment& expr) |
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288 { |
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289 tree_argument_list *lhs = expr.left_hand_side (); |
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290 |
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291 if (lhs) |
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292 { |
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293 do_lvalue_check = true; |
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294 |
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295 lhs->accept (*this); |
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296 |
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297 do_lvalue_check = false; |
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298 } |
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299 |
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300 tree_expression *rhs = expr.right_hand_side (); |
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301 |
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302 if (rhs) |
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303 rhs->accept (*this); |
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304 } |
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305 |
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306 void |
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307 tree_checker::visit_no_op_command (tree_no_op_command& /* cmd */) |
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308 { |
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309 } |
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310 |
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311 void |
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312 tree_checker::visit_constant (tree_constant& /* val */) |
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313 { |
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314 } |
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315 |
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316 void |
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317 tree_checker::visit_parameter_list (tree_parameter_list& lst) |
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318 { |
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319 tree_parameter_list::iterator p = lst.begin (); |
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320 |
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321 while (p != lst.end ()) |
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322 { |
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323 tree_identifier *elt = *p++; |
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324 |
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325 if (elt) |
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326 elt->accept (*this); |
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327 } |
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328 } |
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329 |
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330 void |
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331 tree_checker::visit_plot_command (tree_plot_command& cmd) |
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332 { |
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333 plot_limits *range = cmd.limits (); |
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334 |
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335 if (range) |
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336 range->accept (*this); |
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337 |
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338 subplot_list *plot_list = cmd.subplots (); |
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339 |
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340 if (plot_list) |
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341 plot_list->accept (*this); |
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342 } |
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343 |
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344 void |
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345 tree_checker::visit_plot_limits (plot_limits& cmd) |
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346 { |
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347 plot_range *x_range = cmd.x_limits (); |
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348 |
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349 if (x_range) |
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350 x_range->accept (*this); |
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351 |
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352 plot_range *y_range = cmd.y_limits (); |
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353 |
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354 if (y_range) |
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355 y_range->accept (*this); |
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356 |
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357 plot_range *z_range = cmd.z_limits (); |
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358 |
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359 if (z_range) |
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360 z_range->accept (*this); |
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361 } |
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362 |
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363 void |
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364 tree_checker::visit_plot_range (plot_range& cmd) |
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365 { |
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366 tree_expression *lower = cmd.lower_bound (); |
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367 |
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368 if (lower) |
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369 lower->accept (*this); |
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370 |
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371 tree_expression *upper = cmd.upper_bound (); |
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372 |
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373 if (upper) |
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374 upper->accept (*this); |
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375 } |
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376 |
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377 void |
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378 tree_checker::visit_postfix_expression (tree_postfix_expression& expr) |
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379 { |
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380 tree_expression *e = expr.operand (); |
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381 |
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382 if (e) |
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383 e->accept (*this); |
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384 } |
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385 |
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386 void |
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387 tree_checker::visit_prefix_expression (tree_prefix_expression& expr) |
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388 { |
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389 tree_expression *e = expr.operand (); |
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390 |
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391 if (e) |
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392 e->accept (*this); |
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393 } |
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394 |
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395 void |
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396 tree_checker::visit_return_command (tree_return_command&) |
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397 { |
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398 } |
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399 |
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400 void |
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401 tree_checker::visit_return_list (tree_return_list& lst) |
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402 { |
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403 tree_return_list::iterator p = lst.begin (); |
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404 |
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405 while (p != lst.end ()) |
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406 { |
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407 tree_index_expression *elt = *p++; |
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408 |
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409 if (elt) |
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410 elt->accept (*this); |
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411 } |
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412 } |
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413 |
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414 void |
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415 tree_checker::visit_simple_assignment (tree_simple_assignment& expr) |
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416 { |
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417 tree_expression *lhs = expr.left_hand_side (); |
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418 |
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419 if (lhs) |
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420 { |
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421 if (! lhs->lvalue_ok ()) |
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422 gripe ("invalid lvalue in assignment", expr.line ()); |
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423 } |
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424 |
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425 tree_expression *rhs = expr.right_hand_side (); |
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426 |
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427 if (rhs) |
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428 rhs->accept (*this); |
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429 } |
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430 |
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431 void |
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432 tree_checker::visit_statement (tree_statement& stmt) |
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433 { |
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434 tree_command *cmd = stmt.command (); |
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435 |
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436 if (cmd) |
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437 cmd->accept (*this); |
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438 else |
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439 { |
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440 tree_expression *expr = stmt.expression (); |
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441 |
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442 if (expr) |
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443 expr->accept (*this); |
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444 } |
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445 } |
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446 |
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447 void |
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448 tree_checker::visit_statement_list (tree_statement_list& lst) |
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449 { |
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450 for (tree_statement_list::iterator p = lst.begin (); p != lst.end (); p++) |
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451 { |
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452 tree_statement *elt = *p; |
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453 |
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454 if (elt) |
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455 elt->accept (*this); |
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456 } |
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457 } |
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458 |
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459 void |
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460 tree_checker::visit_subplot (subplot& cmd) |
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461 { |
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462 tree_expression *sp_plot_data = cmd.plot_data (); |
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463 |
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464 if (sp_plot_data) |
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465 sp_plot_data->accept (*this); |
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466 |
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467 subplot_using *sp_using_clause = cmd.using_clause (); |
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468 |
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469 if (sp_using_clause) |
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470 sp_using_clause->accept (*this); |
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471 |
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472 tree_expression *sp_title_clause = cmd.title_clause (); |
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473 |
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474 if (sp_title_clause) |
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475 sp_title_clause->accept (*this); |
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476 |
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477 subplot_style *sp_style_clause = cmd.style_clause (); |
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478 |
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479 if (sp_style_clause) |
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480 sp_style_clause->accept (*this); |
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481 } |
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482 |
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483 void |
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484 tree_checker::visit_subplot_list (subplot_list& lst) |
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485 { |
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4219
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486 subplot_list::iterator p = lst.begin (); |
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487 |
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4219
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488 while (p != lst.end ()) |
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3011
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489 { |
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4219
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490 subplot *elt = *p++; |
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491 |
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492 if (elt) |
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493 elt->accept (*this); |
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494 } |
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495 } |
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496 |
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497 void |
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498 tree_checker::visit_subplot_style (subplot_style& cmd) |
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499 { |
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500 tree_expression *sp_linetype = cmd.linetype (); |
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501 |
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502 if (sp_linetype) |
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503 sp_linetype->accept (*this); |
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504 |
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505 tree_expression *sp_pointtype = cmd.pointtype (); |
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506 |
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507 if (sp_pointtype) |
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508 sp_pointtype->accept (*this); |
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509 } |
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510 |
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511 void |
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512 tree_checker::visit_subplot_using (subplot_using& cmd) |
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513 { |
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514 int qual_count = cmd.qualifier_count (); |
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515 |
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516 if (qual_count > 0) |
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517 { |
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518 tree_expression **x = cmd.qualifiers (); |
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519 |
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520 for (int i = 0; i < qual_count; i++) |
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521 { |
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522 if (x[i]) |
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523 x[i]->accept (*this); |
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524 } |
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525 } |
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526 else |
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527 { |
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528 tree_expression *scanf_fmt = cmd.scanf_format (); |
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529 |
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530 if (scanf_fmt) |
|
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531 scanf_fmt->accept (*this); |
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532 } |
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533 } |
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534 |
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535 void |
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536 tree_checker::visit_switch_case (tree_switch_case& cs) |
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537 { |
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538 tree_expression *label = cs.case_label (); |
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539 |
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540 if (label) |
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541 label->accept (*this); |
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542 |
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543 tree_statement_list *list = cs.commands (); |
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544 |
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545 if (list) |
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546 list->accept (*this); |
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547 } |
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548 |
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549 void |
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550 tree_checker::visit_switch_case_list (tree_switch_case_list& lst) |
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551 { |
|
4219
|
552 tree_switch_case_list::iterator p = lst.begin (); |
|
3011
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553 |
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4219
|
554 while (p != lst.end ()) |
|
3011
|
555 { |
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4219
|
556 tree_switch_case *elt = *p++; |
|
3011
|
557 |
|
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558 if (elt) |
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559 elt->accept (*this); |
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|
560 } |
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561 } |
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562 |
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563 void |
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564 tree_checker::visit_switch_command (tree_switch_command& cmd) |
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565 { |
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566 tree_expression *expr = cmd.switch_value (); |
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|
567 |
|
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568 if (expr) |
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|
569 expr->accept (*this); |
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|
570 |
|
|
571 tree_switch_case_list *list = cmd.case_list (); |
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|
572 |
|
|
573 if (list) |
|
|
574 list->accept (*this); |
|
|
575 } |
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|
576 |
|
|
577 void |
|
|
578 tree_checker::visit_try_catch_command (tree_try_catch_command& cmd) |
|
|
579 { |
|
|
580 tree_statement_list *try_code = cmd.body (); |
|
|
581 |
|
|
582 if (try_code) |
|
|
583 try_code->accept (*this); |
|
|
584 |
|
|
585 tree_statement_list *catch_code = cmd.cleanup (); |
|
|
586 |
|
|
587 if (catch_code) |
|
|
588 catch_code->accept (*this); |
|
|
589 } |
|
|
590 |
|
|
591 void |
|
|
592 tree_checker::visit_unwind_protect_command |
|
|
593 (tree_unwind_protect_command& cmd) |
|
|
594 { |
|
|
595 tree_statement_list *unwind_protect_code = cmd.body (); |
|
|
596 |
|
|
597 if (unwind_protect_code) |
|
|
598 unwind_protect_code->accept (*this); |
|
|
599 |
|
|
600 tree_statement_list *cleanup_code = cmd.cleanup (); |
|
|
601 |
|
|
602 if (cleanup_code) |
|
|
603 cleanup_code->accept (*this); |
|
|
604 } |
|
|
605 |
|
|
606 void |
|
|
607 tree_checker::visit_while_command (tree_while_command& cmd) |
|
|
608 { |
|
|
609 tree_expression *expr = cmd.condition (); |
|
|
610 |
|
|
611 if (expr) |
|
|
612 expr->accept (*this); |
|
|
613 |
|
|
614 tree_statement_list *list = cmd.body (); |
|
|
615 |
|
|
616 if (list) |
|
|
617 list->accept (*this); |
|
|
618 } |
|
|
619 |
|
|
620 void |
|
3523
|
621 tree_checker::gripe (const std::string& msg, int line) |
|
3011
|
622 { |
|
|
623 if (curr_fcn_file_name.empty ()) |
|
|
624 error ("%s", msg.c_str ()); |
|
|
625 else |
|
|
626 error ("%s: %d: %s", curr_fcn_file_name.c_str (), line, msg.c_str ()); |
|
|
627 } |
|
|
628 |
|
|
629 /* |
|
|
630 ;;; Local Variables: *** |
|
|
631 ;;; mode: C++ *** |
|
|
632 ;;; End: *** |
|
|
633 */ |
