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annotate libinterp/parse-tree/pt-stmt.h @ 19840:c5270263d466 gui-release
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| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 30 Jan 2015 17:41:50 -0500 |
| parents | ebb3ef964372 |
| children | 4197fc428c7d |
| rev | line source |
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| 2982 | 1 /* |
| 2 | |
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3 Copyright (C) 1996-2013 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 | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 2982 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 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_stmt_h) |
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24 #define octave_pt_stmt_h 1 |
| 2982 | 25 |
| 26 class octave_value_list; | |
| 27 | |
| 28 class tree_command; | |
| 29 class tree_expression; | |
| 30 | |
| 31 class tree_walker; | |
| 32 | |
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33 #include <deque> |
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34 |
| 4219 | 35 #include "base-list.h" |
| 3665 | 36 #include "comment-list.h" |
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37 #include "debug.h" |
| 7336 | 38 #include "symtab.h" |
| 14899 | 39 #include "pt.h" |
| 3665 | 40 |
| 2982 | 41 // A statement is either a command to execute or an expression to |
| 42 // evaluate. | |
| 43 | |
| 44 class | |
| 14899 | 45 tree_statement : public tree |
| 2982 | 46 { |
| 47 public: | |
| 48 | |
| 49 tree_statement (void) | |
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50 : cmd (0), expr (0), comm (0) { } |
| 2982 | 51 |
| 3665 | 52 tree_statement (tree_command *c, octave_comment_list *cl) |
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53 : cmd (c), expr (0), comm (cl) { } |
| 2982 | 54 |
| 3665 | 55 tree_statement (tree_expression *e, octave_comment_list *cl) |
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56 : cmd (0), expr (e), comm (cl) { } |
| 2982 | 57 |
| 58 ~tree_statement (void); | |
| 59 | |
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60 void set_print_flag (bool print_flag); |
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61 |
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62 bool print_result (void); |
| 2982 | 63 |
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64 bool is_command (void) const { return cmd != 0; } |
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65 |
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66 bool is_expression (void) const { return expr != 0; } |
| 2982 | 67 |
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68 void set_breakpoint (void); |
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69 |
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70 void delete_breakpoint (void); |
| 2982 | 71 |
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72 bool is_breakpoint (void) const; |
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73 |
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74 int line (void) const; |
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75 int column (void) const; |
| 2982 | 76 |
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77 void set_location (int l, int c); |
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78 |
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79 void echo_code (void); |
| 2982 | 80 |
| 81 tree_command *command (void) { return cmd; } | |
| 82 | |
| 83 tree_expression *expression (void) { return expr; } | |
| 84 | |
| 3665 | 85 octave_comment_list *comment_text (void) { return comm; } |
| 86 | |
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87 bool is_null_statement (void) const { return ! (cmd || expr || comm); } |
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88 |
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89 bool is_end_of_fcn_or_script (void) const; |
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90 |
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91 bool is_end_of_file (void) const; |
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92 |
| 4935 | 93 // Allow modification of this statement. Note that there is no |
| 94 // checking. If you use these, are you sure you knwo what you are | |
| 95 // doing? | |
| 96 | |
| 97 void set_command (tree_command *c) { cmd = c; } | |
| 98 | |
| 99 void set_expression (tree_expression *e) { expr = e; } | |
| 100 | |
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101 tree_statement *dup (symbol_table::scope_id scope, |
| 10313 | 102 symbol_table::context_id context) const; |
| 5861 | 103 |
| 2982 | 104 void accept (tree_walker& tw); |
| 105 | |
| 106 private: | |
| 107 | |
| 108 // Only one of cmd or expr can be valid at once. | |
| 109 | |
| 110 // Command to execute. | |
| 111 tree_command *cmd; | |
| 112 | |
| 113 // Expression to evaluate. | |
| 114 tree_expression *expr; | |
| 115 | |
| 3665 | 116 // Comment associated with this statement. |
| 117 octave_comment_list *comm; | |
| 118 | |
| 2988 | 119 // No copying! |
| 120 tree_statement (const tree_statement&); | |
| 121 | |
| 122 tree_statement& operator = (const tree_statement&); | |
| 2982 | 123 }; |
| 124 | |
| 125 // A list of statements to evaluate. | |
| 126 | |
| 127 class | |
| 4219 | 128 tree_statement_list : public octave_base_list<tree_statement *> |
| 2982 | 129 { |
| 130 public: | |
| 131 | |
| 132 tree_statement_list (void) | |
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133 : function_body (false), anon_function_body (false), |
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134 script_body (false) { } |
| 2982 | 135 |
| 136 tree_statement_list (tree_statement *s) | |
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137 : function_body (false), anon_function_body (false), |
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138 script_body (false) { append (s); } |
| 2982 | 139 |
| 140 ~tree_statement_list (void) | |
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141 { |
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142 while (! empty ()) |
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143 { |
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144 iterator p = begin (); |
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145 delete *p; |
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146 erase (p); |
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147 } |
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148 } |
| 2982 | 149 |
| 150 void mark_as_function_body (void) { function_body = true; } | |
| 151 | |
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152 void mark_as_anon_function_body (void) { anon_function_body = true; } |
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153 |
| 7736 | 154 void mark_as_script_body (void) { script_body = true; } |
| 155 | |
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156 bool is_function_body (void) const { return function_body; } |
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157 |
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158 bool is_anon_function_body (void) const { return anon_function_body; } |
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160 bool is_script_body (void) const { return script_body; } |
| 2982 | 161 |
| 3770 | 162 int set_breakpoint (int line); |
| 163 | |
| 164 void delete_breakpoint (int line); | |
| 165 | |
| 166 octave_value_list list_breakpoints (void); | |
| 167 | |
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168 bp_table::intmap add_breakpoint (const std::string& file, |
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169 const bp_table::intmap& line); |
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170 |
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171 bp_table::intmap remove_all_breakpoints (const std::string& file); |
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172 |
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173 tree_statement_list *dup (symbol_table::scope_id scope, |
| 10313 | 174 symbol_table::context_id context) const; |
| 5861 | 175 |
| 2982 | 176 void accept (tree_walker& tw); |
| 177 | |
| 178 private: | |
| 179 | |
| 180 // Does this list of statements make up the body of a function? | |
| 181 bool function_body; | |
| 2988 | 182 |
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183 // Does this list of statements make up the body of a function? |
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184 bool anon_function_body; |
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185 |
| 7736 | 186 // Does this list of statements make up the body of a script? |
| 187 bool script_body; | |
| 188 | |
| 2988 | 189 // No copying! |
| 190 | |
| 191 tree_statement_list (const tree_statement_list&); | |
| 192 | |
| 193 tree_statement_list& operator = (const tree_statement_list&); | |
| 2982 | 194 }; |
| 195 | |
| 196 #endif |