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annotate src/pt-check.cc @ 8920:eb63fbe60fab
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| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sat, 07 Mar 2009 10:41:27 -0500 |
| parents | 73c4516fae10 |
| children | cd96d29c5efa |
| rev | line source |
|---|---|
| 3011 | 1 /* |
| 2 | |
| 8920 | 3 Copyright (C) 1996, 1997, 2000, 2002, 2003, 2004, 2005, 2006, 2007, |
| 4 2008, 2009 John W. Eaton | |
| 3011 | 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. | |
| 3011 | 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/>. | |
| 3011 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include "error.h" | |
| 29 #include "input.h" | |
| 30 #include "ov-usr-fcn.h" | |
| 31 #include "pt-all.h" | |
| 32 | |
| 33 void | |
| 34 tree_checker::visit_argument_list (tree_argument_list& lst) | |
| 35 { | |
| 4219 | 36 tree_argument_list::iterator p = lst.begin (); |
| 3011 | 37 |
| 4219 | 38 while (p != lst.end ()) |
| 3011 | 39 { |
| 4219 | 40 tree_expression *elt = *p++; |
| 3011 | 41 |
| 42 if (elt) | |
| 43 { | |
| 44 if (do_lvalue_check && ! elt->lvalue_ok ()) | |
| 45 gripe ("invalid lvalue in multiple assignment", elt->line ()); | |
| 46 } | |
| 47 } | |
| 48 } | |
| 49 | |
| 50 void | |
| 51 tree_checker::visit_binary_expression (tree_binary_expression& expr) | |
| 52 { | |
| 53 tree_expression *op1 = expr.lhs (); | |
| 54 | |
| 55 if (op1) | |
| 56 op1->accept (*this); | |
| 57 | |
| 58 tree_expression *op2 = expr.rhs (); | |
| 59 | |
| 60 if (op2) | |
| 61 op2->accept (*this); | |
| 62 } | |
| 63 | |
| 64 void | |
| 4207 | 65 tree_checker::visit_break_command (tree_break_command&) |
| 3011 | 66 { |
| 67 } | |
| 68 | |
| 69 void | |
| 70 tree_checker::visit_colon_expression (tree_colon_expression& expr) | |
| 71 { | |
| 72 tree_expression *op1 = expr.base (); | |
| 73 | |
| 74 if (op1) | |
| 75 op1->accept (*this); | |
| 76 | |
| 77 tree_expression *op3 = expr.increment (); | |
| 78 | |
| 79 if (op3) | |
| 80 op3->accept (*this); | |
| 81 | |
| 82 tree_expression *op2 = expr.limit (); | |
| 83 | |
| 84 if (op2) | |
| 85 op2->accept (*this); | |
| 86 } | |
| 87 | |
| 88 void | |
| 4207 | 89 tree_checker::visit_continue_command (tree_continue_command&) |
| 3011 | 90 { |
| 91 } | |
| 92 | |
| 93 void | |
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94 tree_checker::do_decl_command (tree_decl_command& cmd) |
| 3011 | 95 { |
| 96 tree_decl_init_list *init_list = cmd.initializer_list (); | |
| 97 | |
| 98 if (init_list) | |
| 99 init_list->accept (*this); | |
| 100 } | |
| 101 | |
| 102 void | |
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103 tree_checker::visit_global_command (tree_global_command& cmd) |
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104 { |
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105 do_decl_command (cmd); |
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106 } |
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107 |
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108 void |
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109 tree_checker::visit_static_command (tree_static_command& cmd) |
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110 { |
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111 do_decl_command (cmd); |
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112 } |
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113 |
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114 void |
| 3011 | 115 tree_checker::visit_decl_elt (tree_decl_elt& cmd) |
| 116 { | |
| 117 tree_identifier *id = cmd.ident (); | |
| 118 | |
| 119 if (id) | |
| 120 id->accept (*this); | |
| 121 | |
| 122 tree_expression *expr = cmd.expression (); | |
| 123 | |
| 124 if (expr) | |
| 125 expr->accept (*this); | |
| 126 } | |
| 127 | |
| 128 void | |
| 129 tree_checker::visit_decl_init_list (tree_decl_init_list& lst) | |
| 130 { | |
| 4219 | 131 tree_decl_init_list::iterator p = lst.begin (); |
| 3011 | 132 |
| 4219 | 133 while (p != lst.end ()) |
| 3011 | 134 { |
| 4219 | 135 tree_decl_elt *elt = *p++; |
| 3011 | 136 |
| 137 if (elt) | |
| 138 elt->accept (*this); | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 void | |
| 143 tree_checker::visit_simple_for_command (tree_simple_for_command& cmd) | |
| 144 { | |
| 145 tree_expression *lhs = cmd.left_hand_side (); | |
| 146 | |
| 147 if (lhs) | |
| 148 { | |
| 149 if (! lhs->lvalue_ok ()) | |
| 150 gripe ("invalid lvalue in for command", cmd.line ()); | |
| 151 } | |
| 152 | |
| 153 tree_expression *expr = cmd.control_expr (); | |
| 154 | |
| 155 if (expr) | |
| 156 expr->accept (*this); | |
| 157 | |
| 158 tree_statement_list *list = cmd.body (); | |
| 159 | |
| 160 if (list) | |
| 161 list->accept (*this); | |
| 162 } | |
| 163 | |
| 164 void | |
| 165 tree_checker::visit_complex_for_command (tree_complex_for_command& cmd) | |
| 166 { | |
| 167 tree_argument_list *lhs = cmd.left_hand_side (); | |
| 168 | |
| 169 if (lhs) | |
| 170 { | |
| 171 int len = lhs->length (); | |
| 172 | |
| 3018 | 173 if (len == 0 || len > 2) |
| 3011 | 174 gripe ("invalid number of output arguments in for command", |
| 175 cmd.line ()); | |
| 176 | |
| 177 do_lvalue_check = true; | |
| 178 | |
| 179 lhs->accept (*this); | |
| 180 | |
| 181 do_lvalue_check = false; | |
| 182 } | |
| 183 | |
| 184 tree_expression *expr = cmd.control_expr (); | |
| 185 | |
| 186 if (expr) | |
| 187 expr->accept (*this); | |
| 188 | |
| 189 tree_statement_list *list = cmd.body (); | |
| 190 | |
| 191 if (list) | |
| 192 list->accept (*this); | |
| 193 } | |
| 194 | |
| 195 void | |
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196 tree_checker::visit_octave_user_script (octave_user_script& fcn) |
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197 { |
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198 tree_statement_list *cmd_list = fcn.body (); |
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199 |
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200 if (cmd_list) |
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201 cmd_list->accept (*this); |
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202 } |
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203 |
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204 void |
| 3011 | 205 tree_checker::visit_octave_user_function (octave_user_function& fcn) |
| 206 { | |
| 207 tree_statement_list *cmd_list = fcn.body (); | |
| 208 | |
| 209 if (cmd_list) | |
| 210 cmd_list->accept (*this); | |
| 211 } | |
| 212 | |
| 213 void | |
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214 tree_checker::visit_function_def (tree_function_def& fdef) |
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215 { |
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216 octave_value fcn = fdef.function (); |
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217 |
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218 octave_function *f = fcn.function_value (); |
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219 |
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220 if (f) |
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221 f->accept (*this); |
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222 } |
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223 |
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224 void |
| 3011 | 225 tree_checker::visit_identifier (tree_identifier& /* id */) |
| 226 { | |
| 227 } | |
| 228 | |
| 229 void | |
| 230 tree_checker::visit_if_clause (tree_if_clause& cmd) | |
| 231 { | |
| 232 tree_expression *expr = cmd.condition (); | |
| 233 | |
| 234 if (expr) | |
| 235 expr->accept (*this); | |
| 236 | |
| 237 tree_statement_list *list = cmd.commands (); | |
| 238 | |
| 239 if (list) | |
| 240 list->accept (*this); | |
| 241 } | |
| 242 | |
| 243 void | |
| 244 tree_checker::visit_if_command (tree_if_command& cmd) | |
| 245 { | |
| 246 tree_if_command_list *list = cmd.cmd_list (); | |
| 247 | |
| 248 if (list) | |
| 249 list->accept (*this); | |
| 250 } | |
| 251 | |
| 252 void | |
| 253 tree_checker::visit_if_command_list (tree_if_command_list& lst) | |
| 254 { | |
| 4219 | 255 tree_if_command_list::iterator p = lst.begin (); |
| 3011 | 256 |
| 4219 | 257 while (p != lst.end ()) |
| 3011 | 258 { |
| 4219 | 259 tree_if_clause *elt = *p++; |
| 3011 | 260 |
| 261 if (elt) | |
| 262 elt->accept (*this); | |
| 263 } | |
| 264 } | |
| 265 | |
| 266 void | |
| 267 tree_checker::visit_index_expression (tree_index_expression& expr) | |
| 268 { | |
| 269 tree_expression *e = expr.expression (); | |
| 270 | |
| 271 if (e) | |
| 272 e->accept (*this); | |
| 273 | |
| 4219 | 274 std::list<tree_argument_list *> lst = expr.arg_lists (); |
| 3933 | 275 |
| 4219 | 276 std::list<tree_argument_list *>::iterator p = lst.begin (); |
| 3011 | 277 |
| 4219 | 278 while (p != lst.end ()) |
| 3933 | 279 { |
| 4219 | 280 tree_argument_list *elt = *p++; |
| 3933 | 281 |
| 282 if (elt) | |
| 283 elt->accept (*this); | |
| 284 } | |
| 3011 | 285 } |
| 286 | |
| 287 void | |
| 288 tree_checker::visit_matrix (tree_matrix& lst) | |
| 289 { | |
| 4219 | 290 tree_matrix::iterator p = lst.begin (); |
| 3011 | 291 |
| 4219 | 292 while (p != lst.end ()) |
| 3011 | 293 { |
| 4219 | 294 tree_argument_list *elt = *p++; |
| 295 | |
| 296 if (elt) | |
| 297 elt->accept (*this); | |
| 298 } | |
| 299 } | |
| 3011 | 300 |
| 4219 | 301 void |
| 302 tree_checker::visit_cell (tree_cell& lst) | |
| 303 { | |
| 304 tree_matrix::iterator p = lst.begin (); | |
| 305 | |
| 306 while (p != lst.end ()) | |
| 307 { | |
| 308 tree_argument_list *elt = *p++; | |
| 3011 | 309 |
| 310 if (elt) | |
| 311 elt->accept (*this); | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 void | |
| 316 tree_checker::visit_multi_assignment (tree_multi_assignment& expr) | |
| 317 { | |
| 318 tree_argument_list *lhs = expr.left_hand_side (); | |
| 319 | |
| 320 if (lhs) | |
| 321 { | |
| 322 do_lvalue_check = true; | |
| 323 | |
| 324 lhs->accept (*this); | |
| 325 | |
| 326 do_lvalue_check = false; | |
| 327 } | |
| 328 | |
| 329 tree_expression *rhs = expr.right_hand_side (); | |
| 330 | |
| 331 if (rhs) | |
| 332 rhs->accept (*this); | |
| 333 } | |
| 334 | |
| 335 void | |
| 336 tree_checker::visit_no_op_command (tree_no_op_command& /* cmd */) | |
| 337 { | |
| 338 } | |
| 339 | |
| 340 void | |
| 5861 | 341 tree_checker::visit_anon_fcn_handle (tree_anon_fcn_handle& /* afh */) |
| 342 { | |
| 343 } | |
| 344 | |
| 345 void | |
| 3011 | 346 tree_checker::visit_constant (tree_constant& /* val */) |
| 347 { | |
| 348 } | |
| 349 | |
| 350 void | |
| 4342 | 351 tree_checker::visit_fcn_handle (tree_fcn_handle& /* fh */) |
| 352 { | |
| 353 } | |
| 354 | |
| 355 void | |
| 3011 | 356 tree_checker::visit_parameter_list (tree_parameter_list& lst) |
| 357 { | |
| 4219 | 358 tree_parameter_list::iterator p = lst.begin (); |
| 3011 | 359 |
| 4219 | 360 while (p != lst.end ()) |
| 3011 | 361 { |
| 6215 | 362 tree_decl_elt *elt = *p++; |
| 3011 | 363 |
| 364 if (elt) | |
| 365 elt->accept (*this); | |
| 366 } | |
| 367 } | |
| 368 | |
| 369 void | |
| 370 tree_checker::visit_postfix_expression (tree_postfix_expression& expr) | |
| 371 { | |
| 372 tree_expression *e = expr.operand (); | |
| 373 | |
| 374 if (e) | |
| 375 e->accept (*this); | |
| 376 } | |
| 377 | |
| 378 void | |
| 379 tree_checker::visit_prefix_expression (tree_prefix_expression& expr) | |
| 380 { | |
| 381 tree_expression *e = expr.operand (); | |
| 382 | |
| 383 if (e) | |
| 384 e->accept (*this); | |
| 385 } | |
| 386 | |
| 387 void | |
| 4207 | 388 tree_checker::visit_return_command (tree_return_command&) |
| 3011 | 389 { |
| 390 } | |
| 391 | |
| 392 void | |
| 393 tree_checker::visit_return_list (tree_return_list& lst) | |
| 394 { | |
| 4219 | 395 tree_return_list::iterator p = lst.begin (); |
| 3011 | 396 |
| 4219 | 397 while (p != lst.end ()) |
| 3011 | 398 { |
| 4219 | 399 tree_index_expression *elt = *p++; |
| 3011 | 400 |
| 401 if (elt) | |
| 402 elt->accept (*this); | |
| 403 } | |
| 404 } | |
| 405 | |
| 406 void | |
| 407 tree_checker::visit_simple_assignment (tree_simple_assignment& expr) | |
| 408 { | |
| 409 tree_expression *lhs = expr.left_hand_side (); | |
| 410 | |
| 411 if (lhs) | |
| 412 { | |
| 413 if (! lhs->lvalue_ok ()) | |
| 414 gripe ("invalid lvalue in assignment", expr.line ()); | |
| 415 } | |
| 416 | |
| 417 tree_expression *rhs = expr.right_hand_side (); | |
| 418 | |
| 419 if (rhs) | |
| 420 rhs->accept (*this); | |
| 421 } | |
| 422 | |
| 423 void | |
| 424 tree_checker::visit_statement (tree_statement& stmt) | |
| 425 { | |
| 426 tree_command *cmd = stmt.command (); | |
| 427 | |
| 428 if (cmd) | |
| 429 cmd->accept (*this); | |
| 430 else | |
| 431 { | |
| 432 tree_expression *expr = stmt.expression (); | |
| 433 | |
| 434 if (expr) | |
| 435 expr->accept (*this); | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 void | |
| 440 tree_checker::visit_statement_list (tree_statement_list& lst) | |
| 441 { | |
| 4219 | 442 for (tree_statement_list::iterator p = lst.begin (); p != lst.end (); p++) |
| 3011 | 443 { |
| 4219 | 444 tree_statement *elt = *p; |
| 3011 | 445 |
| 446 if (elt) | |
| 447 elt->accept (*this); | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 void | |
| 452 tree_checker::visit_switch_case (tree_switch_case& cs) | |
| 453 { | |
| 454 tree_expression *label = cs.case_label (); | |
| 455 | |
| 456 if (label) | |
| 457 label->accept (*this); | |
| 458 | |
| 459 tree_statement_list *list = cs.commands (); | |
| 460 | |
| 461 if (list) | |
| 462 list->accept (*this); | |
| 463 } | |
| 464 | |
| 465 void | |
| 466 tree_checker::visit_switch_case_list (tree_switch_case_list& lst) | |
| 467 { | |
| 4219 | 468 tree_switch_case_list::iterator p = lst.begin (); |
| 3011 | 469 |
| 4219 | 470 while (p != lst.end ()) |
| 3011 | 471 { |
| 4219 | 472 tree_switch_case *elt = *p++; |
| 3011 | 473 |
| 474 if (elt) | |
| 475 elt->accept (*this); | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 void | |
| 480 tree_checker::visit_switch_command (tree_switch_command& cmd) | |
| 481 { | |
| 482 tree_expression *expr = cmd.switch_value (); | |
| 483 | |
| 484 if (expr) | |
| 485 expr->accept (*this); | |
| 486 | |
| 487 tree_switch_case_list *list = cmd.case_list (); | |
| 488 | |
| 489 if (list) | |
| 490 list->accept (*this); | |
| 491 } | |
| 492 | |
| 493 void | |
| 494 tree_checker::visit_try_catch_command (tree_try_catch_command& cmd) | |
| 495 { | |
| 496 tree_statement_list *try_code = cmd.body (); | |
| 497 | |
| 498 if (try_code) | |
| 499 try_code->accept (*this); | |
| 500 | |
| 501 tree_statement_list *catch_code = cmd.cleanup (); | |
| 502 | |
| 503 if (catch_code) | |
| 504 catch_code->accept (*this); | |
| 505 } | |
| 506 | |
| 507 void | |
| 508 tree_checker::visit_unwind_protect_command | |
| 509 (tree_unwind_protect_command& cmd) | |
| 510 { | |
| 511 tree_statement_list *unwind_protect_code = cmd.body (); | |
| 512 | |
| 513 if (unwind_protect_code) | |
| 514 unwind_protect_code->accept (*this); | |
| 515 | |
| 516 tree_statement_list *cleanup_code = cmd.cleanup (); | |
| 517 | |
| 518 if (cleanup_code) | |
| 519 cleanup_code->accept (*this); | |
| 520 } | |
| 521 | |
| 522 void | |
| 523 tree_checker::visit_while_command (tree_while_command& cmd) | |
| 524 { | |
| 525 tree_expression *expr = cmd.condition (); | |
| 526 | |
| 527 if (expr) | |
| 528 expr->accept (*this); | |
| 529 | |
| 530 tree_statement_list *list = cmd.body (); | |
| 531 | |
| 532 if (list) | |
| 533 list->accept (*this); | |
| 534 } | |
| 535 | |
| 536 void | |
| 4229 | 537 tree_checker::visit_do_until_command (tree_do_until_command& cmd) |
| 538 { | |
| 539 tree_statement_list *list = cmd.body (); | |
| 540 | |
| 541 if (list) | |
| 542 list->accept (*this); | |
| 543 | |
| 544 tree_expression *expr = cmd.condition (); | |
| 545 | |
| 546 if (expr) | |
| 547 expr->accept (*this); | |
| 548 } | |
| 549 | |
| 550 void | |
| 3523 | 551 tree_checker::gripe (const std::string& msg, int line) |
| 3011 | 552 { |
| 553 if (curr_fcn_file_name.empty ()) | |
| 554 error ("%s", msg.c_str ()); | |
| 555 else | |
| 556 error ("%s: %d: %s", curr_fcn_file_name.c_str (), line, msg.c_str ()); | |
| 557 } | |
| 558 | |
| 559 /* | |
| 560 ;;; Local Variables: *** | |
| 561 ;;; mode: C++ *** | |
| 562 ;;; End: *** | |
| 563 */ |