annotate libinterp/parse-tree/pt-except.h @ 23615:be7b884ac589

use version number in OCTAVE_DEPRECATED macro * mk-octave-config-h.sh, oct-conf-post.in.h (OCTAVE_DEPRECATED): New argument, VER, to record and display version number in which the object was marked as deprecated. Change all uses.
author John W. Eaton <jwe@octave.org>
date Fri, 16 Jun 2017 09:19:20 -0400
parents a3898679d459
children ea879bc55272
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1 /*
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2
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3 Copyright (C) 1996-2017 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
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9 the Free Software Foundation; either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License 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, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_pt_except_h)
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24 #define octave_pt_except_h 1
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25
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26 #include "octave-config.h"
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27
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28 #include "comment-list.h"
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29 #include "pt-cmd.h"
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30 #include "pt-id.h"
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31 #include "pt-walk.h"
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32 #include "symtab.h"
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33
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34 namespace octave
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35 {
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36 class tree_statement_list;
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37
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38 // Simple exception handling.
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39
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40 class tree_try_catch_command : public tree_command
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41 {
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42 public:
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43
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44 tree_try_catch_command (int l = -1, int c = -1)
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45 : tree_command (l, c), try_code (0), catch_code (0), expr_id (0),
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46 lead_comm (0), mid_comm (0), trail_comm (0) { }
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47
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48 tree_try_catch_command (tree_statement_list *tc, tree_statement_list *cc,
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49 tree_identifier *id,
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50 octave_comment_list *cl = nullptr,
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51 octave_comment_list *cm = nullptr,
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52 octave_comment_list *ct = nullptr,
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53 int l = -1, int c = -1)
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54 : tree_command (l, c), try_code (tc), catch_code (cc), expr_id (id),
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55 lead_comm (cl), mid_comm (cm), trail_comm (ct) { }
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56
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57 // No copying!
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58
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59 tree_try_catch_command (const tree_try_catch_command&) = delete;
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60
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61 tree_try_catch_command& operator = (const tree_try_catch_command&) = delete;
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62
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63 ~tree_try_catch_command (void);
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64
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65 tree_identifier * identifier (void) { return expr_id; }
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66
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67 tree_statement_list * body (void) { return try_code; }
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68
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69 tree_statement_list * cleanup (void) { return catch_code; }
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70
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71 octave_comment_list * leading_comment (void) { return lead_comm; }
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72
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73 octave_comment_list * middle_comment (void) { return mid_comm; }
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74
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75 octave_comment_list * trailing_comment (void) { return trail_comm; }
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76
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77 void accept (tree_walker& tw)
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78 {
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79 tw.visit_try_catch_command (*this);
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80 }
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81
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82 private:
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83
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84 // The first block of code to attempt to execute.
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85 tree_statement_list *try_code;
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86
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87 // The code to execute if an error occurs in the first block.
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88 tree_statement_list *catch_code;
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89
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90 // Identifier to modify.
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91 tree_identifier *expr_id;
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92
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93 // Comment preceding TRY token.
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94 octave_comment_list *lead_comm;
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95
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96 // Comment preceding CATCH token.
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97 octave_comment_list *mid_comm;
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98
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99 // Comment preceding END_TRY_CATCH token.
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100 octave_comment_list *trail_comm;
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101 };
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102
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103 // Simple exception handling.
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104
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105 class tree_unwind_protect_command : public tree_command
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106 {
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107 public:
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108
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109 tree_unwind_protect_command (int l = -1, int c = -1)
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110 : tree_command (l, c), unwind_protect_code (0), cleanup_code (0),
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111 lead_comm (0), mid_comm (0), trail_comm (0) { }
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112
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113 tree_unwind_protect_command (tree_statement_list *tc,
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114 tree_statement_list *cc,
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115 octave_comment_list *cl = nullptr,
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116 octave_comment_list *cm = nullptr,
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117 octave_comment_list *ct = nullptr,
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118 int l = -1, int c = -1)
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119 : tree_command (l, c), unwind_protect_code (tc), cleanup_code (cc),
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120 lead_comm (cl), mid_comm (cm), trail_comm (ct) { }
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121
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122 // No copying!
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123
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124 tree_unwind_protect_command (const tree_unwind_protect_command&) = delete;
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125
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126 tree_unwind_protect_command&
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127 operator = (const tree_unwind_protect_command&) = delete;
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128
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129 ~tree_unwind_protect_command (void);
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130
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131 tree_statement_list * body (void) { return unwind_protect_code; }
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132
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133 tree_statement_list * cleanup (void) { return cleanup_code; }
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134
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135 octave_comment_list * leading_comment (void) { return lead_comm; }
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136
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137 octave_comment_list * middle_comment (void) { return mid_comm; }
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138
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139 octave_comment_list * trailing_comment (void) { return trail_comm; }
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140
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141 void accept (tree_walker& tw)
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142 {
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143 tw.visit_unwind_protect_command (*this);
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144 }
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145
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146 private:
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147
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148 // The first body of code to attempt to execute.
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149 tree_statement_list *unwind_protect_code;
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150
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151 // The body of code to execute no matter what happens in the first
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152 // body of code.
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153 tree_statement_list *cleanup_code;
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154
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155 // Comment preceding UNWIND_PROTECT token.
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156 octave_comment_list *lead_comm;
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157
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158 // Comment preceding UNWIND_PROTECT_CLEANUP token.
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159 octave_comment_list *mid_comm;
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160
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161 // Comment preceding END_UNWIND_PROTECT token.
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162 octave_comment_list *trail_comm;
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163 };
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164 }
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165
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166 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS)
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167
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168 OCTAVE_DEPRECATED (4.4, "use 'octave::tree_try_catch_command' instead")
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169 typedef octave::tree_try_catch_command tree_try_catch_command;
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170
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171 OCTAVE_DEPRECATED (4.4, "use 'octave::tree_unwind_protect_command' instead")
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172 typedef octave::tree_unwind_protect_command tree_unwind_protect_command;
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173
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174 #endif
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175
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176 #endif