Mercurial > hg > octave-lyh
annotate src/pt-stmt.h @ 8283:54c25dc5b17d
parse.y: fix comment
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 28 Oct 2008 13:04:32 -0400 |
| parents | 71f068b22fcc |
| children | 02de6775f1fe |
| rev | line source |
|---|---|
| 2982 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 2000, 2001, 2002, 2004, 2005, 2006, 2007 |
| 4 John W. Eaton | |
| 2982 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2982 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 2982 | 21 |
| 22 */ | |
| 23 | |
| 24 #if !defined (octave_tree_stmt_h) | |
| 25 #define octave_tree_stmt_h 1 | |
| 26 | |
| 27 class octave_value_list; | |
| 28 | |
| 29 class tree_command; | |
| 30 class tree_expression; | |
| 31 | |
| 32 class tree_walker; | |
| 33 | |
|
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34 #include <deque> |
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35 |
| 4219 | 36 #include "base-list.h" |
| 3665 | 37 #include "comment-list.h" |
| 7336 | 38 #include "symtab.h" |
| 3665 | 39 |
| 2982 | 40 // A statement is either a command to execute or an expression to |
| 41 // evaluate. | |
| 42 | |
| 43 class | |
| 44 tree_statement | |
| 45 { | |
| 46 public: | |
| 47 | |
| 48 tree_statement (void) | |
| 3665 | 49 : cmd (0), expr (0), comm (0), print_flag (true) { } |
| 2982 | 50 |
| 3665 | 51 tree_statement (tree_command *c, octave_comment_list *cl) |
| 52 : cmd (c), expr (0), comm (cl), print_flag (true) { } | |
| 2982 | 53 |
| 3665 | 54 tree_statement (tree_expression *e, octave_comment_list *cl) |
| 55 : cmd (0), expr (e), comm (cl), print_flag (true) { } | |
| 2982 | 56 |
| 57 ~tree_statement (void); | |
| 58 | |
| 3933 | 59 void set_print_flag (bool print) { print_flag = print; } |
| 2982 | 60 |
| 3933 | 61 bool is_command (void) { return cmd != 0; } |
| 2982 | 62 |
| 3933 | 63 bool is_expression (void) { return expr != 0; } |
| 2982 | 64 |
| 65 int line (void); | |
| 66 int column (void); | |
| 67 | |
| 68 void maybe_echo_code (bool in_function_body); | |
| 69 | |
| 70 bool print_result (void) { return print_flag; } | |
| 71 | |
| 72 tree_command *command (void) { return cmd; } | |
| 73 | |
| 7736 | 74 octave_value_list eval (bool silent, int nargout, |
| 75 bool in_function_or_script_body); | |
| 2982 | 76 |
| 77 tree_expression *expression (void) { return expr; } | |
| 78 | |
| 3665 | 79 octave_comment_list *comment_text (void) { return comm; } |
| 80 | |
| 4935 | 81 // Allow modification of this statement. Note that there is no |
| 82 // checking. If you use these, are you sure you knwo what you are | |
| 83 // doing? | |
| 84 | |
| 85 void set_command (tree_command *c) { cmd = c; } | |
| 86 | |
| 87 void set_expression (tree_expression *e) { expr = e; } | |
| 88 | |
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89 tree_statement *dup (symbol_table::scope_id scope, |
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90 symbol_table::context_id context); |
| 5861 | 91 |
| 2982 | 92 void accept (tree_walker& tw); |
| 93 | |
| 94 private: | |
| 95 | |
| 96 // Only one of cmd or expr can be valid at once. | |
| 97 | |
| 98 // Command to execute. | |
| 99 tree_command *cmd; | |
| 100 | |
| 101 // Expression to evaluate. | |
| 102 tree_expression *expr; | |
| 103 | |
| 3665 | 104 // Comment associated with this statement. |
| 105 octave_comment_list *comm; | |
| 106 | |
| 2982 | 107 // Print result of eval for this command? |
| 108 bool print_flag; | |
| 2988 | 109 |
| 110 // No copying! | |
| 111 tree_statement (const tree_statement&); | |
| 112 | |
| 113 tree_statement& operator = (const tree_statement&); | |
| 2982 | 114 }; |
| 115 | |
| 116 // A list of statements to evaluate. | |
| 117 | |
| 118 class | |
| 4219 | 119 tree_statement_list : public octave_base_list<tree_statement *> |
| 2982 | 120 { |
| 121 public: | |
| 122 | |
| 123 tree_statement_list (void) | |
| 7736 | 124 : function_body (false), script_body (false) { } |
| 2982 | 125 |
| 126 tree_statement_list (tree_statement *s) | |
| 7736 | 127 : function_body (false), script_body (false) { append (s); } |
| 2982 | 128 |
| 129 ~tree_statement_list (void) | |
| 130 { | |
| 4219 | 131 while (! empty ()) |
| 2982 | 132 { |
| 4219 | 133 iterator p = begin (); |
| 134 delete *p; | |
| 135 erase (p); | |
| 2982 | 136 } |
| 137 } | |
| 138 | |
| 139 void mark_as_function_body (void) { function_body = true; } | |
| 140 | |
| 7736 | 141 void mark_as_script_body (void) { script_body = true; } |
| 142 | |
| 2982 | 143 octave_value_list eval (bool silent = false, int nargout = 0); |
| 144 | |
| 3770 | 145 int set_breakpoint (int line); |
| 146 | |
| 147 void delete_breakpoint (int line); | |
| 148 | |
| 149 octave_value_list list_breakpoints (void); | |
| 150 | |
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7767
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parents:
7736
diff
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151 tree_statement_list *dup (symbol_table::scope_id scope, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7736
diff
changeset
|
152 symbol_table::context_id context); |
| 5861 | 153 |
| 2982 | 154 void accept (tree_walker& tw); |
| 155 | |
| 156 private: | |
| 157 | |
| 158 // Does this list of statements make up the body of a function? | |
| 159 bool function_body; | |
| 2988 | 160 |
| 7736 | 161 // Does this list of statements make up the body of a script? |
| 162 bool script_body; | |
| 163 | |
| 2988 | 164 // No copying! |
| 165 | |
| 166 tree_statement_list (const tree_statement_list&); | |
| 167 | |
| 168 tree_statement_list& operator = (const tree_statement_list&); | |
| 2982 | 169 }; |
| 170 | |
| 171 #endif | |
| 172 | |
| 173 /* | |
| 174 ;;; Local Variables: *** | |
| 175 ;;; mode: C++ *** | |
| 176 ;;; End: *** | |
| 177 */ |