Mercurial > octave
annotate src/pt-decl.h @ 8523:ad3afaaa19c1
implement non-copying contiguous range indexing
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Thu, 15 Jan 2009 07:22:24 +0100 |
| parents | 283989f2da9b |
| children | 73c4516fae10 |
| rev | line source |
|---|---|
| 2982 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 2000, 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_decl_h) | |
| 25 #define octave_tree_decl_h 1 | |
| 26 | |
| 27 class tree_expression; | |
| 28 class tree_identifier; | |
| 29 | |
| 30 class tree_walker; | |
| 31 | |
| 32 #include <string> | |
| 33 | |
| 4219 | 34 #include "base-list.h" |
| 6215 | 35 #include "oct-lvalue.h" |
| 2982 | 36 #include "pt-cmd.h" |
| 6215 | 37 #include "pt-id.h" |
| 7336 | 38 #include "symtab.h" |
| 2982 | 39 |
| 40 // List of expressions that make up a declaration statement. | |
| 41 | |
| 42 class | |
| 43 tree_decl_elt | |
| 44 { | |
| 45 public: | |
| 46 | |
| 2989 | 47 typedef void (*eval_fcn) (tree_decl_elt &); |
| 2982 | 48 |
| 49 tree_decl_elt (tree_identifier *i = 0, tree_expression *e = 0) | |
| 50 : id (i), expr (e) { } | |
| 51 | |
| 52 ~tree_decl_elt (void); | |
| 53 | |
| 6215 | 54 bool eval (void); |
| 55 | |
| 56 bool is_defined (void) { return id ? id->is_defined () : false; } | |
| 57 | |
| 7336 | 58 bool is_variable (void) { return id ? id->is_variable () : false; } |
| 59 | |
| 6215 | 60 void mark_as_formal_parameter (void) |
| 61 { | |
| 62 if (id) | |
| 63 id->mark_as_formal_parameter (); | |
| 64 } | |
| 65 | |
| 66 bool lvalue_ok (void) { return id ? id->lvalue_ok () : false; } | |
| 67 | |
|
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68 // Do not allow functions return null values |
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69 octave_value rvalue (void) { return id ? id->rvalue ().storable_value () : octave_value (); } |
| 6215 | 70 |
| 71 octave_value_list rvalue (int nargout) | |
| 72 { | |
| 73 return id ? id->rvalue (nargout) : octave_value_list (); | |
| 74 } | |
| 75 | |
| 76 octave_lvalue lvalue (void) { return id ? id->lvalue () : octave_lvalue (); } | |
| 2982 | 77 |
| 78 tree_identifier *ident (void) { return id; } | |
| 79 | |
| 80 tree_expression *expression (void) { return expr; } | |
| 81 | |
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82 tree_decl_elt *dup (symbol_table::scope_id scope, |
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83 symbol_table::context_id context); |
| 5861 | 84 |
| 2982 | 85 void accept (tree_walker& tw); |
| 86 | |
| 87 private: | |
| 88 | |
| 89 // An identifier to tag with the declared property. | |
| 90 tree_identifier *id; | |
| 91 | |
| 92 // An initializer expression (may be zero); | |
| 93 tree_expression *expr; | |
| 2988 | 94 |
| 95 // No copying! | |
| 96 | |
| 97 tree_decl_elt (const tree_decl_elt&); | |
| 98 | |
| 99 tree_decl_elt& operator = (const tree_decl_elt&); | |
| 2982 | 100 }; |
| 101 | |
| 102 class | |
| 4219 | 103 tree_decl_init_list : public octave_base_list<tree_decl_elt *> |
| 2982 | 104 { |
| 105 public: | |
| 106 | |
| 4219 | 107 tree_decl_init_list (void) { } |
| 2982 | 108 |
| 4219 | 109 tree_decl_init_list (tree_decl_elt *t) { append (t); } |
| 2982 | 110 |
| 111 ~tree_decl_init_list (void) | |
| 112 { | |
| 4219 | 113 while (! empty ()) |
| 2982 | 114 { |
| 4219 | 115 iterator p = begin (); |
| 116 delete *p; | |
| 117 erase (p); | |
| 2982 | 118 } |
| 119 } | |
| 120 | |
| 2989 | 121 void eval (tree_decl_elt::eval_fcn); |
| 2982 | 122 |
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parents:
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123 tree_decl_init_list *dup (symbol_table::scope_id scope, |
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parents:
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diff
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124 symbol_table::context_id context); |
| 5861 | 125 |
| 2982 | 126 void accept (tree_walker& tw); |
| 2988 | 127 |
| 128 private: | |
| 129 | |
| 130 // No copying! | |
| 131 | |
| 132 tree_decl_init_list (const tree_decl_init_list&); | |
| 133 | |
| 134 tree_decl_init_list& operator = (const tree_decl_init_list&); | |
| 2982 | 135 }; |
| 136 | |
| 137 // Base class for declaration commands -- global, static, etc. | |
| 138 | |
| 139 class | |
| 140 tree_decl_command : public tree_command | |
| 141 { | |
| 142 public: | |
| 143 | |
| 3523 | 144 tree_decl_command (const std::string& n, int l = -1, int c = -1) |
| 7336 | 145 : tree_command (l, c), cmd_name (n), init_list (0) { } |
| 2982 | 146 |
| 3523 | 147 tree_decl_command (const std::string& n, tree_decl_init_list *t, |
| 2982 | 148 int l = -1, int c = -1) |
| 7336 | 149 : tree_command (l, c), cmd_name (n), init_list (t) { } |
| 2982 | 150 |
| 151 ~tree_decl_command (void); | |
| 152 | |
| 153 tree_decl_init_list *initializer_list (void) { return init_list; } | |
| 154 | |
| 155 void accept (tree_walker& tw); | |
| 156 | |
| 3523 | 157 std::string name (void) { return cmd_name; } |
| 2982 | 158 |
| 159 protected: | |
| 160 | |
| 161 // The name of this command -- global, static, etc. | |
| 3523 | 162 std::string cmd_name; |
| 2982 | 163 |
| 164 // The list of variables or initializers in this declaration command. | |
| 165 tree_decl_init_list *init_list; | |
| 2988 | 166 |
| 167 private: | |
| 168 | |
| 169 // No copying! | |
| 170 | |
| 171 tree_decl_command (const tree_decl_command&); | |
| 172 | |
| 173 tree_decl_command& operator = (const tree_decl_command&); | |
| 2982 | 174 }; |
| 175 | |
| 176 // Global. | |
| 177 | |
| 178 class | |
| 179 tree_global_command : public tree_decl_command | |
| 180 { | |
| 181 public: | |
| 182 | |
| 183 tree_global_command (int l = -1, int c = -1) | |
| 184 : tree_decl_command ("global", l, c) { } | |
| 185 | |
| 186 tree_global_command (tree_decl_init_list *t, int l = -1, int c = -1) | |
| 187 : tree_decl_command ("global", t, l, c) { } | |
| 188 | |
| 189 ~tree_global_command (void) { } | |
| 190 | |
| 191 void eval (void); | |
| 2988 | 192 |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
193 tree_command *dup (symbol_table::scope_id scope, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
194 symbol_table::context_id context); |
| 5861 | 195 |
| 2988 | 196 private: |
| 197 | |
| 2989 | 198 static void do_init (tree_decl_elt& elt); |
| 199 | |
| 2988 | 200 // No copying! |
| 201 | |
| 202 tree_global_command (const tree_global_command&); | |
| 203 | |
| 204 tree_global_command& operator = (const tree_global_command&); | |
| 2982 | 205 }; |
| 206 | |
| 207 // Static. | |
| 208 | |
| 209 class | |
| 210 tree_static_command : public tree_decl_command | |
| 211 { | |
| 212 public: | |
| 213 | |
| 214 tree_static_command (int l = -1, int c = -1) | |
| 215 : tree_decl_command ("static", l, c) { } | |
| 216 | |
| 217 tree_static_command (tree_decl_init_list *t, int l = -1, int c = -1) | |
| 218 : tree_decl_command ("static", t, l, c) { } | |
| 219 | |
| 220 ~tree_static_command (void) { } | |
| 221 | |
| 222 void eval (void); | |
| 2988 | 223 |
|
7767
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
224 tree_command *dup (symbol_table::scope_id scope, |
|
71f068b22fcc
scope and context fixes for function handles
John W. Eaton <jwe@octave.org>
parents:
7336
diff
changeset
|
225 symbol_table::context_id context); |
| 5861 | 226 |
| 2988 | 227 private: |
| 228 | |
| 2989 | 229 static void do_init (tree_decl_elt& elt); |
| 230 | |
| 2988 | 231 // No copying! |
| 232 | |
| 233 tree_static_command (const tree_static_command&); | |
| 234 | |
| 235 tree_static_command& operator = (const tree_static_command&); | |
| 2982 | 236 }; |
| 237 | |
| 238 #endif | |
| 239 | |
| 240 /* | |
| 241 ;;; Local Variables: *** | |
| 242 ;;; mode: C++ *** | |
| 243 ;;; End: *** | |
| 244 */ |