Mercurial > octave
annotate libinterp/parse-tree/pt-except.h @ 23220:092078913d54
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 22 Feb 2017 12:58:07 -0500 |
parents | ef4d915df748 3ac9f9ecfae5 |
children | c452180ab672 |
rev | line source |
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2982 | 1 /* |
2 | |
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3 Copyright (C) 1996-2017 John W. Eaton |
2982 | 4 |
5 This file is part of Octave. | |
6 | |
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. |
2982 | 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. |
2982 | 16 |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
19 <http://www.gnu.org/licenses/>. | |
2982 | 20 |
21 */ | |
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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26 #include "octave-config.h" |
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27 |
3665 | 28 #include "comment-list.h" |
2982 | 29 #include "pt-cmd.h" |
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30 #include "pt-id.h" |
7336 | 31 #include "symtab.h" |
2982 | 32 |
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33 namespace octave |
2982 | 34 { |
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35 class tree_statement_list; |
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36 |
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37 class tree_walker; |
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38 |
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39 // Simple exception handling. |
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41 class tree_try_catch_command : public tree_command |
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42 { |
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43 public: |
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44 |
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45 tree_try_catch_command (int l = -1, int c = -1) |
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46 : tree_command (l, c), try_code (0), catch_code (0), expr_id (0), |
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47 lead_comm (0), mid_comm (0), trail_comm (0) { } |
2982 | 48 |
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49 tree_try_catch_command (tree_statement_list *tc, tree_statement_list *cc, |
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50 tree_identifier *id, |
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51 octave_comment_list *cl = 0, |
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52 octave_comment_list *cm = 0, |
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53 octave_comment_list *ct = 0, |
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54 int l = -1, int c = -1) |
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55 : tree_command (l, c), try_code (tc), catch_code (cc), expr_id (id), |
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56 lead_comm (cl), mid_comm (cm), trail_comm (ct) { } |
2982 | 57 |
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58 // No copying! |
2982 | 59 |
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60 tree_try_catch_command (const tree_try_catch_command&) = delete; |
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61 |
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62 tree_try_catch_command& operator = (const tree_try_catch_command&) = delete; |
2982 | 63 |
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64 ~tree_try_catch_command (void); |
2982 | 65 |
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66 tree_identifier *identifier (void) { return expr_id; } |
3665 | 67 |
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68 tree_statement_list *body (void) { return try_code; } |
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69 |
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70 tree_statement_list *cleanup (void) { return catch_code; } |
3665 | 71 |
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72 octave_comment_list *leading_comment (void) { return lead_comm; } |
3665 | 73 |
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74 octave_comment_list *middle_comment (void) { return mid_comm; } |
5861 | 75 |
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76 octave_comment_list *trailing_comment (void) { return trail_comm; } |
2982 | 77 |
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78 tree_command *dup (symbol_table::scope_id scope, |
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79 symbol_table::context_id context) const; |
2982 | 80 |
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81 void accept (tree_walker& tw); |
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82 |
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83 private: |
2982 | 84 |
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85 // The first block of code to attempt to execute. |
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86 tree_statement_list *try_code; |
2988 | 87 |
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88 // The code to execute if an error occurs in the first block. |
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89 tree_statement_list *catch_code; |
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90 |
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91 // Identifier to modify. |
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92 tree_identifier *expr_id; |
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94 // Comment preceding TRY token. |
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95 octave_comment_list *lead_comm; |
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97 // Comment preceding CATCH token. |
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98 octave_comment_list *mid_comm; |
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100 // Comment preceding END_TRY_CATCH token. |
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101 octave_comment_list *trail_comm; |
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102 }; |
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104 // Simple exception handling. |
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106 class tree_unwind_protect_command : public tree_command |
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107 { |
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108 public: |
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110 tree_unwind_protect_command (int l = -1, int c = -1) |
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111 : tree_command (l, c), unwind_protect_code (0), cleanup_code (0), |
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112 lead_comm (0), mid_comm (0), trail_comm (0) { } |
2982 | 113 |
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114 tree_unwind_protect_command (tree_statement_list *tc, |
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115 tree_statement_list *cc, |
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116 octave_comment_list *cl = 0, |
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117 octave_comment_list *cm = 0, |
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118 octave_comment_list *ct = 0, |
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119 int l = -1, int c = -1) |
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120 : tree_command (l, c), unwind_protect_code (tc), cleanup_code (cc), |
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121 lead_comm (cl), mid_comm (cm), trail_comm (ct) { } |
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122 |
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123 // No copying! |
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125 tree_unwind_protect_command (const tree_unwind_protect_command&) = delete; |
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127 tree_unwind_protect_command& |
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128 operator = (const tree_unwind_protect_command&) = delete; |
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130 ~tree_unwind_protect_command (void); |
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131 |
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132 tree_statement_list *body (void) { return unwind_protect_code; } |
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134 tree_statement_list *cleanup (void) { return cleanup_code; } |
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135 |
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136 octave_comment_list *leading_comment (void) { return lead_comm; } |
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138 octave_comment_list *middle_comment (void) { return mid_comm; } |
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140 octave_comment_list *trailing_comment (void) { return trail_comm; } |
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142 tree_command *dup (symbol_table::scope_id scope, |
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143 symbol_table::context_id context) const; |
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145 void accept (tree_walker& tw); |
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147 private: |
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149 // The first body of code to attempt to execute. |
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150 tree_statement_list *unwind_protect_code; |
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152 // The body of code to execute no matter what happens in the first |
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153 // body of code. |
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154 tree_statement_list *cleanup_code; |
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156 // Comment preceding UNWIND_PROTECT token. |
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157 octave_comment_list *lead_comm; |
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159 // Comment preceding UNWIND_PROTECT_CLEANUP token. |
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160 octave_comment_list *mid_comm; |
3665 | 161 |
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162 // Comment preceding END_UNWIND_PROTECT token. |
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163 octave_comment_list *trail_comm; |
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164 }; |
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165 } |
2988 | 166 |
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167 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) |
2988 | 168 |
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169 OCTAVE_DEPRECATED ("use 'octave::tree_try_catch_command' instead") |
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170 typedef octave::tree_try_catch_command tree_try_catch_command; |
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171 |
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172 OCTAVE_DEPRECATED ("use 'octave::tree_unwind_protect_command' instead") |
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173 typedef octave::tree_unwind_protect_command tree_unwind_protect_command; |
2982 | 174 |
175 #endif | |
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176 |
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177 #endif |