Mercurial > octave-antonio
annotate src/parse.y @ 8974:fde2a916b2ac
include line and file info in parser warnings
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 13 Mar 2009 10:26:59 -0400 |
| parents | d865363208d6 |
| children | da58ec8f62e8 fca0dc2fb042 |
| rev | line source |
|---|---|
| 1829 | 1 /* |
| 1 | 2 |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 8920 | 4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 John W. Eaton |
| 1 | 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. | |
| 1 | 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/>. | |
| 1 | 21 |
| 22 */ | |
| 23 | |
| 24 // Parser for Octave. | |
| 25 | |
| 767 | 26 // C decarations. |
| 27 | |
| 1 | 28 %{ |
| 29 #define YYDEBUG 1 | |
| 30 | |
| 240 | 31 #ifdef HAVE_CONFIG_H |
| 1229 | 32 #include <config.h> |
| 240 | 33 #endif |
| 34 | |
| 3178 | 35 #include <cassert> |
| 3156 | 36 #include <cstdio> |
| 37 | |
| 2427 | 38 #ifdef YYBYACC |
| 39 #include <cstdlib> | |
| 40 #endif | |
| 41 | |
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42 #include <iostream> |
| 5484 | 43 #include <map> |
| 5765 | 44 #include <sstream> |
| 5484 | 45 |
| 3928 | 46 #include "Cell.h" |
| 1 | 47 #include "Matrix.h" |
| 3021 | 48 #include "cmd-edit.h" |
| 49 #include "cmd-hist.h" | |
| 50 #include "file-ops.h" | |
| 51 #include "file-stat.h" | |
| 4243 | 52 #include "oct-env.h" |
| 3712 | 53 #include "oct-time.h" |
| 4171 | 54 #include "quit.h" |
| 1 | 55 |
| 3665 | 56 #include "comment-list.h" |
| 4243 | 57 #include "defaults.h" |
| 2166 | 58 #include "defun.h" |
| 4243 | 59 #include "dirfns.h" |
| 3021 | 60 #include "dynamic-ld.h" |
| 1351 | 61 #include "error.h" |
| 62 #include "input.h" | |
| 63 #include "lex.h" | |
| 5832 | 64 #include "load-path.h" |
| 1743 | 65 #include "oct-hist.h" |
| 5626 | 66 #include "oct-map.h" |
| 4935 | 67 #include "ov-fcn-handle.h" |
| 2970 | 68 #include "ov-usr-fcn.h" |
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69 #include "ov-null-mat.h" |
| 1670 | 70 #include "toplev.h" |
| 1351 | 71 #include "pager.h" |
| 72 #include "parse.h" | |
| 2987 | 73 #include "pt-all.h" |
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74 #include "pt-eval.h" |
| 1351 | 75 #include "symtab.h" |
| 76 #include "token.h" | |
| 3021 | 77 #include "unwind-prot.h" |
| 1 | 78 #include "utils.h" |
| 1351 | 79 #include "variables.h" |
| 1 | 80 |
| 81 // The current input line number. | |
|
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82 int input_line_number = 1; |
| 1 | 83 |
| 84 // The column of the current token. | |
| 143 | 85 int current_input_column = 1; |
| 1 | 86 |
| 338 | 87 // Buffer for help text snagged from function files. |
| 4426 | 88 std::stack<std::string> help_buf; |
| 1 | 89 |
| 3665 | 90 // Buffer for comments appearing before a function statement. |
| 91 static std::string fcn_comment_header; | |
| 92 | |
| 3021 | 93 // TRUE means we are using readline. |
| 94 // (--no-line-editing) | |
| 95 bool line_editing = true; | |
| 96 | |
| 97 // TRUE means we printed messages about reading startup files. | |
| 98 bool reading_startup_message_printed = false; | |
| 99 | |
| 100 // TRUE means input is coming from startup file. | |
| 101 bool input_from_startup_file = false; | |
| 102 | |
| 4238 | 103 // Keep a count of how many END tokens we expect. |
| 104 int end_tokens_expected = 0; | |
| 105 | |
| 3903 | 106 // Keep track of symbol table information when parsing functions. |
| 7336 | 107 std::stack<symbol_table::scope_id> symtab_context; |
| 4238 | 108 |
| 109 // Name of parent function when parsing function files that might | |
| 110 // contain nested functions. | |
| 111 std::string parent_function_name; | |
| 3903 | 112 |
| 7336 | 113 // Name of the current class when we are parsing class methods or |
| 114 // constructors. | |
| 115 std::string current_class_name; | |
| 116 | |
| 5484 | 117 // TRUE means we are in the process of autoloading a function. |
| 118 static bool autoloading = false; | |
| 119 | |
| 6323 | 120 // TRUE means the current function file was found in a relative path |
| 121 // element. | |
| 122 static bool fcn_file_from_relative_lookup = false; | |
| 123 | |
| 7336 | 124 // If nonzero, this is a pointer to the function we just finished |
| 125 // parsing. | |
| 126 static octave_function *curr_fcn_ptr = 0; | |
| 127 | |
| 5484 | 128 // List of autoloads (function -> file mapping). |
| 129 static std::map<std::string, std::string> autoload_map; | |
| 130 | |
| 496 | 131 // Forward declarations for some functions defined at the bottom of |
| 132 // the file. | |
| 133 | |
| 134 // Generic error messages. | |
| 2970 | 135 static void |
| 136 yyerror (const char *s); | |
| 1 | 137 |
| 578 | 138 // Error mesages for mismatched end tokens. |
| 2970 | 139 static void |
| 140 end_error (const char *type, token::end_tok_type ettype, int l, int c); | |
| 1 | 141 |
| 578 | 142 // Check to see that end tokens are properly matched. |
| 2970 | 143 static bool |
| 144 end_token_ok (token *tok, token::end_tok_type expected); | |
| 496 | 145 |
| 146 // Maybe print a warning if an assignment expression is used as the | |
| 147 // test in a logical expression. | |
| 2970 | 148 static void |
| 149 maybe_warn_assign_as_truth_value (tree_expression *expr); | |
| 1 | 150 |
| 2764 | 151 // Maybe print a warning about switch labels that aren't constants. |
| 2970 | 152 static void |
| 153 maybe_warn_variable_switch_label (tree_expression *expr); | |
| 2764 | 154 |
| 1623 | 155 // Finish building a range. |
| 2970 | 156 static tree_expression * |
| 157 finish_colon_expression (tree_colon_expression *e); | |
| 1623 | 158 |
| 1607 | 159 // Build a constant. |
| 2970 | 160 static tree_constant * |
| 161 make_constant (int op, token *tok_val); | |
| 1607 | 162 |
| 4342 | 163 // Build a function handle. |
| 164 static tree_fcn_handle * | |
| 165 make_fcn_handle (token *tok_val); | |
| 166 | |
| 4935 | 167 // Build an anonymous function handle. |
| 5861 | 168 static tree_anon_fcn_handle * |
| 4935 | 169 make_anon_fcn_handle (tree_parameter_list *param_list, tree_statement *stmt); |
| 170 | |
| 578 | 171 // Build a binary expression. |
| 2970 | 172 static tree_expression * |
| 173 make_binary_op (int op, tree_expression *op1, token *tok_val, | |
| 174 tree_expression *op2); | |
| 578 | 175 |
| 2375 | 176 // Build a boolean expression. |
| 2970 | 177 static tree_expression * |
| 178 make_boolean_op (int op, tree_expression *op1, token *tok_val, | |
| 179 tree_expression *op2); | |
| 2375 | 180 |
| 578 | 181 // Build a prefix expression. |
| 2970 | 182 static tree_expression * |
| 183 make_prefix_op (int op, tree_expression *op1, token *tok_val); | |
| 578 | 184 |
| 185 // Build a postfix expression. | |
| 2970 | 186 static tree_expression * |
| 187 make_postfix_op (int op, tree_expression *op1, token *tok_val); | |
| 578 | 188 |
| 1623 | 189 // Build an unwind-protect command. |
| 2970 | 190 static tree_command * |
| 191 make_unwind_command (token *unwind_tok, tree_statement_list *body, | |
| 3665 | 192 tree_statement_list *cleanup, token *end_tok, |
| 193 octave_comment_list *lc, octave_comment_list *mc); | |
| 1623 | 194 |
| 195 // Build a try-catch command. | |
| 2970 | 196 static tree_command * |
| 197 make_try_command (token *try_tok, tree_statement_list *body, | |
| 3665 | 198 tree_statement_list *cleanup, token *end_tok, |
| 199 octave_comment_list *lc, octave_comment_list *mc); | |
| 1623 | 200 |
| 201 // Build a while command. | |
| 2970 | 202 static tree_command * |
| 203 make_while_command (token *while_tok, tree_expression *expr, | |
| 3665 | 204 tree_statement_list *body, token *end_tok, |
| 205 octave_comment_list *lc); | |
| 1623 | 206 |
| 3484 | 207 // Build a do-until command. |
| 208 static tree_command * | |
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209 make_do_until_command (token *until_tok, tree_statement_list *body, |
| 3665 | 210 tree_expression *expr, octave_comment_list *lc); |
| 3484 | 211 |
| 1623 | 212 // Build a for command. |
| 2970 | 213 static tree_command * |
| 214 make_for_command (token *for_tok, tree_argument_list *lhs, | |
| 215 tree_expression *expr, tree_statement_list *body, | |
| 3665 | 216 token *end_tok, octave_comment_list *lc); |
| 1623 | 217 |
| 4207 | 218 // Build a break command. |
| 219 static tree_command * | |
| 220 make_break_command (token *break_tok); | |
| 221 | |
| 222 // Build a continue command. | |
| 223 static tree_command * | |
| 224 make_continue_command (token *continue_tok); | |
| 225 | |
| 226 // Build a return command. | |
| 227 static tree_command * | |
| 228 make_return_command (token *return_tok); | |
| 1623 | 229 |
| 230 // Start an if command. | |
| 2970 | 231 static tree_if_command_list * |
| 232 start_if_command (tree_expression *expr, tree_statement_list *list); | |
| 1623 | 233 |
| 234 // Finish an if command. | |
| 2970 | 235 static tree_if_command * |
| 3665 | 236 finish_if_command (token *if_tok, tree_if_command_list *list, |
| 237 token *end_tok, octave_comment_list *lc); | |
| 1623 | 238 |
| 239 // Build an elseif clause. | |
| 2970 | 240 static tree_if_clause * |
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241 make_elseif_clause (token *elseif_tok, tree_expression *expr, |
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242 tree_statement_list *list, octave_comment_list *lc); |
| 1623 | 243 |
| 2764 | 244 // Finish a switch command. |
| 2970 | 245 static tree_switch_command * |
| 246 finish_switch_command (token *switch_tok, tree_expression *expr, | |
| 3665 | 247 tree_switch_case_list *list, token *end_tok, |
| 248 octave_comment_list *lc); | |
| 2764 | 249 |
| 250 // Build a switch case. | |
| 2970 | 251 static tree_switch_case * |
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252 make_switch_case (token *case_tok, tree_expression *expr, |
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253 tree_statement_list *list, octave_comment_list *lc); |
| 2764 | 254 |
| 1623 | 255 // Build an assignment to a variable. |
| 2970 | 256 static tree_expression * |
| 257 make_assign_op (int op, tree_argument_list *lhs, token *eq_tok, | |
| 258 tree_expression *rhs); | |
| 1623 | 259 |
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260 // Define a script. |
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261 static void |
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262 make_script (tree_statement_list *cmds, tree_statement *end_script); |
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263 |
| 1623 | 264 // Begin defining a function. |
| 2970 | 265 static octave_user_function * |
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266 start_function (tree_parameter_list *param_list, tree_statement_list *body, |
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267 tree_statement *end_function); |
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268 |
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269 // Create a no-op statement for end_function. |
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270 static tree_statement * |
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271 make_end (const std::string& type, int l, int c); |
| 1623 | 272 |
| 273 // Do most of the work for defining a function. | |
| 2970 | 274 static octave_user_function * |
| 4872 | 275 frob_function (const std::string& fname, octave_user_function *fcn); |
| 1623 | 276 |
| 277 // Finish defining a function. | |
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278 static tree_function_def * |
| 3665 | 279 finish_function (tree_parameter_list *ret_list, |
| 280 octave_user_function *fcn, octave_comment_list *lc); | |
| 751 | 281 |
| 2883 | 282 // Reset state after parsing function. |
| 2970 | 283 static void |
| 284 recover_from_parsing_function (void); | |
| 2883 | 285 |
| 751 | 286 // Make an index expression. |
| 2970 | 287 static tree_index_expression * |
| 3933 | 288 make_index_expression (tree_expression *expr, |
| 289 tree_argument_list *args, char type); | |
| 2970 | 290 |
| 291 // Make an indirect reference expression. | |
| 3930 | 292 static tree_index_expression * |
| 3523 | 293 make_indirect_ref (tree_expression *expr, const std::string&); |
| 666 | 294 |
| 4131 | 295 // Make an indirect reference expression with dynamic field name. |
| 296 static tree_index_expression * | |
| 297 make_indirect_ref (tree_expression *expr, tree_expression *field); | |
| 298 | |
| 2846 | 299 // Make a declaration command. |
| 2970 | 300 static tree_decl_command * |
| 301 make_decl_command (int tok, token *tok_val, tree_decl_init_list *lst); | |
| 2846 | 302 |
| 1623 | 303 // Finish building a matrix list. |
| 2970 | 304 static tree_expression * |
| 305 finish_matrix (tree_matrix *m); | |
| 1623 | 306 |
| 3351 | 307 // Finish building a cell list. |
| 308 static tree_expression * | |
| 309 finish_cell (tree_cell *c); | |
| 310 | |
| 1511 | 311 // Maybe print a warning. Duh. |
| 2970 | 312 static void |
| 313 maybe_warn_missing_semi (tree_statement_list *); | |
| 1511 | 314 |
| 2525 | 315 // Set the print flag for a statement based on the separator type. |
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316 static tree_statement_list * |
| 2970 | 317 set_stmt_print_flag (tree_statement_list *, char, bool); |
| 2525 | 318 |
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319 // Create a statement list. |
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320 static tree_statement_list *make_statement_list (tree_statement *stmt); |
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321 |
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322 // Append a statement to an existing statement list. |
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323 static tree_statement_list * |
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324 append_statement_list (tree_statement_list *list, char sep, |
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325 tree_statement *stmt, bool warn_missing_semi); |
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326 |
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327 // Finish building a statement. |
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328 template <class T> |
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329 static tree_statement * |
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330 make_statement (T *arg) |
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331 { |
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332 octave_comment_list *comment = octave_comment_buffer::get_comment (); |
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333 |
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334 return new tree_statement (arg, comment); |
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335 } |
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336 |
| 1 | 337 #define ABORT_PARSE \ |
| 338 do \ | |
| 339 { \ | |
| 522 | 340 global_command = 0; \ |
| 1 | 341 yyerrok; \ |
| 4238 | 342 if (! symtab_context.empty ()) \ |
| 3929 | 343 { \ |
| 7336 | 344 symbol_table::set_scope (symtab_context.top ()); \ |
| 4238 | 345 symtab_context.pop (); \ |
| 3929 | 346 } \ |
| 2865 | 347 if (interactive || forced_interactive) \ |
| 1 | 348 YYACCEPT; \ |
| 349 else \ | |
| 350 YYABORT; \ | |
| 351 } \ | |
| 352 while (0) | |
| 353 | |
| 354 %} | |
| 355 | |
| 666 | 356 // Bison declarations. |
| 357 | |
| 4813 | 358 // Don't add spaces around the = here; it causes some versions of |
| 359 // bison to fail to properly recognize the directive. | |
| 360 | |
| 361 %name-prefix="octave_" | |
| 4753 | 362 |
| 1 | 363 %union |
| 364 { | |
| 2891 | 365 // The type of the basic tokens returned by the lexer. |
| 143 | 366 token *tok_val; |
| 367 | |
| 3665 | 368 // Comment strings that we need to deal with mid-rule. |
| 369 octave_comment_list *comment_type; | |
| 370 | |
| 2891 | 371 // Types for the nonterminals we generate. |
| 2525 | 372 char sep_type; |
| 1 | 373 tree *tree_type; |
| 1829 | 374 tree_matrix *tree_matrix_type; |
| 3351 | 375 tree_cell *tree_cell_type; |
| 496 | 376 tree_expression *tree_expression_type; |
| 2375 | 377 tree_constant *tree_constant_type; |
| 4342 | 378 tree_fcn_handle *tree_fcn_handle_type; |
| 5861 | 379 tree_anon_fcn_handle *tree_anon_fcn_handle_type; |
| 1 | 380 tree_identifier *tree_identifier_type; |
| 381 tree_index_expression *tree_index_expression_type; | |
| 382 tree_colon_expression *tree_colon_expression_type; | |
| 383 tree_argument_list *tree_argument_list_type; | |
| 384 tree_parameter_list *tree_parameter_list_type; | |
| 385 tree_command *tree_command_type; | |
| 386 tree_if_command *tree_if_command_type; | |
| 578 | 387 tree_if_clause *tree_if_clause_type; |
| 388 tree_if_command_list *tree_if_command_list_type; | |
| 2764 | 389 tree_switch_command *tree_switch_command_type; |
| 390 tree_switch_case *tree_switch_case_type; | |
| 391 tree_switch_case_list *tree_switch_case_list_type; | |
| 2846 | 392 tree_decl_elt *tree_decl_elt_type; |
| 393 tree_decl_init_list *tree_decl_init_list_type; | |
| 394 tree_decl_command *tree_decl_command_type; | |
| 578 | 395 tree_statement *tree_statement_type; |
| 396 tree_statement_list *tree_statement_list_type; | |
| 2891 | 397 octave_user_function *octave_user_function_type; |
| 1 | 398 } |
| 399 | |
| 143 | 400 // Tokens with line and column information. |
| 401 %token <tok_val> '=' ':' '-' '+' '*' '/' | |
| 4018 | 402 %token <tok_val> ADD_EQ SUB_EQ MUL_EQ DIV_EQ LEFTDIV_EQ POW_EQ |
| 403 %token <tok_val> EMUL_EQ EDIV_EQ ELEFTDIV_EQ EPOW_EQ AND_EQ OR_EQ | |
| 2899 | 404 %token <tok_val> LSHIFT_EQ RSHIFT_EQ LSHIFT RSHIFT |
| 428 | 405 %token <tok_val> EXPR_AND_AND EXPR_OR_OR |
| 143 | 406 %token <tok_val> EXPR_AND EXPR_OR EXPR_NOT |
| 407 %token <tok_val> EXPR_LT EXPR_LE EXPR_EQ EXPR_NE EXPR_GE EXPR_GT | |
| 1276 | 408 %token <tok_val> LEFTDIV EMUL EDIV ELEFTDIV EPLUS EMINUS |
| 409 %token <tok_val> QUOTE TRANSPOSE | |
| 143 | 410 %token <tok_val> PLUS_PLUS MINUS_MINUS POW EPOW |
| 411 %token <tok_val> NUM IMAG_NUM | |
| 2970 | 412 %token <tok_val> STRUCT_ELT |
| 2883 | 413 %token <tok_val> NAME |
| 143 | 414 %token <tok_val> END |
| 5279 | 415 %token <tok_val> DQ_STRING SQ_STRING |
| 3484 | 416 %token <tok_val> FOR WHILE DO UNTIL |
| 1491 | 417 %token <tok_val> IF ELSEIF ELSE |
| 2764 | 418 %token <tok_val> SWITCH CASE OTHERWISE |
| 1491 | 419 %token <tok_val> BREAK CONTINUE FUNC_RET |
| 924 | 420 %token <tok_val> UNWIND CLEANUP |
| 1489 | 421 %token <tok_val> TRY CATCH |
| 2846 | 422 %token <tok_val> GLOBAL STATIC |
| 4342 | 423 %token <tok_val> FCN_HANDLE |
| 1 | 424 |
| 143 | 425 // Other tokens. |
| 2970 | 426 %token END_OF_INPUT LEXICAL_ERROR |
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427 %token FCN SCRIPT |
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428 // %token VARARGIN VARARGOUT |
| 5296 | 429 %token CLOSE_BRACE |
| 1 | 430 |
| 143 | 431 // Nonterminals we construct. |
| 3665 | 432 %type <comment_type> stash_comment function_beg |
| 2525 | 433 %type <sep_type> sep_no_nl opt_sep_no_nl sep opt_sep |
| 578 | 434 %type <tree_type> input |
| 5861 | 435 %type <tree_constant_type> string constant magic_colon |
| 436 %type <tree_anon_fcn_handle_type> anon_fcn_handle | |
| 4342 | 437 %type <tree_fcn_handle_type> fcn_handle |
| 3351 | 438 %type <tree_matrix_type> matrix_rows matrix_rows1 |
| 439 %type <tree_cell_type> cell_rows cell_rows1 | |
| 5102 | 440 %type <tree_expression_type> matrix cell |
| 4207 | 441 %type <tree_expression_type> primary_expr postfix_expr prefix_expr binary_expr |
| 442 %type <tree_expression_type> simple_expr colon_expr assign_expr expression | |
| 4238 | 443 %type <tree_identifier_type> identifier fcn_name |
| 7336 | 444 %type <octave_user_function_type> function1 function2 |
| 2970 | 445 %type <tree_index_expression_type> word_list_cmd |
| 446 %type <tree_colon_expression_type> colon_expr1 | |
| 3351 | 447 %type <tree_argument_list_type> arg_list word_list assign_lhs |
| 448 %type <tree_argument_list_type> cell_or_matrix_row | |
| 4935 | 449 %type <tree_parameter_list_type> param_list param_list1 param_list2 |
| 723 | 450 %type <tree_parameter_list_type> return_list return_list1 |
| 2970 | 451 %type <tree_command_type> command select_command loop_command |
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452 %type <tree_command_type> jump_command except_command function script |
| 578 | 453 %type <tree_if_command_type> if_command |
| 454 %type <tree_if_clause_type> elseif_clause else_clause | |
| 455 %type <tree_if_command_list_type> if_cmd_list1 if_cmd_list | |
| 2764 | 456 %type <tree_switch_command_type> switch_command |
| 457 %type <tree_switch_case_type> switch_case default_case | |
| 458 %type <tree_switch_case_list_type> case_list1 case_list | |
| 2846 | 459 %type <tree_decl_elt_type> decl2 |
| 460 %type <tree_decl_init_list_type> decl1 | |
| 461 %type <tree_decl_command_type> declaration | |
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462 %type <tree_statement_type> statement function_end |
| 627 | 463 %type <tree_statement_list_type> simple_list simple_list1 list list1 |
| 7336 | 464 %type <tree_statement_list_type> opt_list input1 |
| 1 | 465 |
| 143 | 466 // Precedence and associativity. |
| 1 | 467 %left ';' ',' '\n' |
| 4018 | 468 %right '=' ADD_EQ SUB_EQ MUL_EQ DIV_EQ LEFTDIV_EQ POW_EQ EMUL_EQ EDIV_EQ ELEFTDIV_EQ EPOW_EQ OR_EQ AND_EQ LSHIFT_EQ RSHIFT_EQ |
| 4023 | 469 %left EXPR_OR_OR |
| 470 %left EXPR_AND_AND | |
| 471 %left EXPR_OR | |
| 472 %left EXPR_AND | |
| 1 | 473 %left EXPR_LT EXPR_LE EXPR_EQ EXPR_NE EXPR_GE EXPR_GT |
| 2899 | 474 %left LSHIFT RSHIFT |
| 1 | 475 %left ':' |
| 1276 | 476 %left '-' '+' EPLUS EMINUS |
| 1 | 477 %left '*' '/' LEFTDIV EMUL EDIV ELEFTDIV |
| 478 %left UNARY PLUS_PLUS MINUS_MINUS EXPR_NOT | |
| 5667 | 479 %left POW EPOW QUOTE TRANSPOSE |
| 3351 | 480 %left '(' '.' '{' |
| 1 | 481 |
| 143 | 482 // Where to start. |
| 1 | 483 %start input |
| 484 | |
| 485 %% | |
| 486 | |
| 2970 | 487 // ============================== |
| 488 // Statements and statement lists | |
| 489 // ============================== | |
| 490 | |
| 627 | 491 input : input1 |
| 1 | 492 { |
| 627 | 493 global_command = $1; |
| 1 | 494 promptflag = 1; |
| 495 YYACCEPT; | |
| 496 } | |
| 627 | 497 | simple_list parse_error |
| 1091 | 498 { ABORT_PARSE; } |
| 627 | 499 | parse_error |
| 1091 | 500 { ABORT_PARSE; } |
| 627 | 501 ; |
| 502 | |
| 503 input1 : '\n' | |
| 504 { $$ = 0; } | |
| 3883 | 505 | END_OF_INPUT |
| 506 { | |
| 507 parser_end_of_input = 1; | |
| 508 $$ = 0; | |
| 509 } | |
| 327 | 510 | simple_list |
| 627 | 511 { $$ = $1; } |
| 1 | 512 | simple_list '\n' |
| 627 | 513 { $$ = $1; } |
| 1 | 514 | simple_list END_OF_INPUT |
| 627 | 515 { $$ = $1; } |
| 516 ; | |
| 517 | |
| 2525 | 518 simple_list : simple_list1 opt_sep_no_nl |
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519 { $$ = set_stmt_print_flag ($1, $2, false); } |
| 1 | 520 ; |
| 521 | |
| 578 | 522 simple_list1 : statement |
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523 { $$ = make_statement_list ($1); } |
| 2525 | 524 | simple_list1 sep_no_nl statement |
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525 { $$ = append_statement_list ($1, $2, $3, false); } |
| 1 | 526 ; |
| 527 | |
| 528 opt_list : // empty | |
| 578 | 529 { $$ = new tree_statement_list (); } |
| 1 | 530 | list |
| 531 { $$ = $1; } | |
| 496 | 532 ; |
| 1 | 533 |
| 2525 | 534 list : list1 opt_sep |
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535 { $$ = set_stmt_print_flag ($1, $2, true); } |
| 1 | 536 ; |
| 537 | |
| 578 | 538 list1 : statement |
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539 { $$ = make_statement_list ($1); } |
| 2525 | 540 | list1 sep statement |
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541 { $$ = append_statement_list ($1, $2, $3, true); } |
| 1 | 542 ; |
| 543 | |
| 2970 | 544 statement : expression |
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545 { $$ = make_statement ($1); } |
| 2970 | 546 | command |
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547 { $$ = make_statement ($1); } |
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548 | word_list_cmd |
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549 { $$ = make_statement ($1); } |
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550 ; |
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551 |
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552 // ================= |
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553 // Word-list command |
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554 // ================= |
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555 |
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556 // These are not really like expressions since they can't appear on |
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557 // the RHS of an assignment. But they are also not like commands (IF, |
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558 // WHILE, etc. |
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559 |
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560 word_list_cmd : identifier word_list |
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561 { $$ = make_index_expression ($1, $2, '('); } |
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562 ; |
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563 |
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564 word_list : string |
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565 { $$ = new tree_argument_list ($1); } |
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566 | word_list string |
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567 { |
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568 $1->append ($2); |
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569 $$ = $1; |
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570 } |
| 1 | 571 ; |
| 572 | |
| 2970 | 573 // =========== |
| 574 // Expressions | |
| 575 // =========== | |
| 576 | |
| 577 identifier : NAME | |
| 578 { | |
| 7336 | 579 symbol_table::symbol_record *sr = $1->sym_rec (); |
| 580 $$ = new tree_identifier (*sr, $1->line (), $1->column ()); | |
| 2970 | 581 } |
| 582 ; | |
| 583 | |
| 5279 | 584 string : DQ_STRING |
| 585 { $$ = make_constant (DQ_STRING, $1); } | |
| 586 | SQ_STRING | |
| 587 { $$ = make_constant (SQ_STRING, $1); } | |
| 588 ; | |
| 589 | |
| 2970 | 590 constant : NUM |
| 591 { $$ = make_constant (NUM, $1); } | |
| 592 | IMAG_NUM | |
| 593 { $$ = make_constant (IMAG_NUM, $1); } | |
| 5279 | 594 | string |
| 595 { $$ = $1; } | |
| 2970 | 596 ; |
| 597 | |
| 598 matrix : '[' ']' | |
| 5615 | 599 { |
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600 $$ = new tree_constant (octave_null_matrix::instance); |
| 5615 | 601 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
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602 lexer_flags.pending_local_variables.clear (); |
| 5615 | 603 } |
| 2970 | 604 | '[' ';' ']' |
| 3203 | 605 { |
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606 $$ = new tree_constant (octave_null_matrix::instance); |
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607 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
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608 lexer_flags.pending_local_variables.clear (); |
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609 } |
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610 | '[' ',' ']' |
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611 { |
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612 $$ = new tree_constant (octave_null_matrix::instance); |
| 5615 | 613 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
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614 lexer_flags.pending_local_variables.clear (); |
| 5615 | 615 } |
| 616 | '[' matrix_rows ']' | |
| 617 { | |
| 618 $$ = finish_matrix ($2); | |
| 3203 | 619 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
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620 lexer_flags.pending_local_variables.clear (); |
| 3203 | 621 } |
| 2970 | 622 ; |
| 623 | |
| 3351 | 624 matrix_rows : matrix_rows1 |
| 2970 | 625 { $$ = $1; } |
| 3351 | 626 | matrix_rows1 ';' // Ignore trailing semicolon. |
| 2970 | 627 { $$ = $1; } |
| 628 ; | |
| 629 | |
| 3351 | 630 matrix_rows1 : cell_or_matrix_row |
| 2970 | 631 { $$ = new tree_matrix ($1); } |
| 3351 | 632 | matrix_rows1 ';' cell_or_matrix_row |
| 2970 | 633 { |
| 634 $1->append ($3); | |
| 635 $$ = $1; | |
| 636 } | |
| 637 ; | |
| 638 | |
| 3351 | 639 cell : '{' '}' |
| 3928 | 640 { $$ = new tree_constant (octave_value (Cell ())); } |
| 3351 | 641 | '{' ';' '}' |
| 3928 | 642 { $$ = new tree_constant (octave_value (Cell ())); } |
| 3351 | 643 | '{' cell_rows '}' |
| 644 { $$ = finish_cell ($2); } | |
| 645 ; | |
| 646 | |
| 647 cell_rows : cell_rows1 | |
| 648 { $$ = $1; } | |
| 649 | cell_rows1 ';' // Ignore trailing semicolon. | |
| 650 { $$ = $1; } | |
| 651 ; | |
| 652 | |
| 653 cell_rows1 : cell_or_matrix_row | |
| 654 { $$ = new tree_cell ($1); } | |
| 655 | cell_rows1 ';' cell_or_matrix_row | |
| 656 { | |
| 657 $1->append ($3); | |
| 658 $$ = $1; | |
| 659 } | |
| 660 ; | |
| 661 | |
| 662 cell_or_matrix_row | |
| 663 : arg_list | |
| 2970 | 664 { $$ = $1; } |
| 665 | arg_list ',' // Ignore trailing comma. | |
| 666 { $$ = $1; } | |
| 667 ; | |
| 668 | |
| 4930 | 669 fcn_handle : '@' FCN_HANDLE |
| 670 { | |
| 671 $$ = make_fcn_handle ($2); | |
| 672 lexer_flags.looking_at_function_handle--; | |
| 673 } | |
| 674 ; | |
| 675 | |
| 4935 | 676 anon_fcn_handle : '@' param_list statement |
| 677 { $$ = make_anon_fcn_handle ($2, $3); } | |
| 4342 | 678 ; |
| 679 | |
| 2970 | 680 primary_expr : identifier |
| 681 { $$ = $1; } | |
| 682 | constant | |
| 683 { $$ = $1; } | |
| 4342 | 684 | fcn_handle |
| 685 { $$ = $1; } | |
| 2970 | 686 | matrix |
| 687 { $$ = $1; } | |
| 3351 | 688 | cell |
| 689 { $$ = $1; } | |
| 2970 | 690 | '(' expression ')' |
| 691 { $$ = $2->mark_in_parens (); } | |
| 692 ; | |
| 693 | |
| 694 magic_colon : ':' | |
| 695 { | |
| 696 octave_value tmp (octave_value::magic_colon_t); | |
| 697 $$ = new tree_constant (tmp); | |
| 698 } | |
| 699 ; | |
| 700 | |
| 701 arg_list : expression | |
| 702 { $$ = new tree_argument_list ($1); } | |
| 703 | magic_colon | |
| 704 { $$ = new tree_argument_list ($1); } | |
| 705 | arg_list ',' magic_colon | |
| 706 { | |
| 707 $1->append ($3); | |
| 708 $$ = $1; | |
| 709 } | |
| 710 | arg_list ',' expression | |
| 711 { | |
| 712 $1->append ($3); | |
| 713 $$ = $1; | |
| 714 } | |
| 715 ; | |
| 716 | |
| 4131 | 717 indirect_ref_op : '.' |
| 2970 | 718 { lexer_flags.looking_at_indirect_ref = true; } |
| 719 ; | |
| 720 | |
| 721 postfix_expr : primary_expr | |
| 722 { $$ = $1; } | |
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723 | postfix_expr '(' ')' |
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724 { $$ = make_index_expression ($1, 0, '('); } |
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725 | postfix_expr '(' arg_list ')' |
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726 { $$ = make_index_expression ($1, $3, '('); } |
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727 | postfix_expr '{' '}' |
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728 { $$ = make_index_expression ($1, 0, '{'); } |
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729 | postfix_expr '{' arg_list '}' |
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730 { $$ = make_index_expression ($1, $3, '{'); } |
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|
731 | postfix_expr PLUS_PLUS |
|
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732 { $$ = make_postfix_op (PLUS_PLUS, $1, $2); } |
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733 | postfix_expr MINUS_MINUS |
|
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734 { $$ = make_postfix_op (MINUS_MINUS, $1, $2); } |
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735 | postfix_expr QUOTE |
|
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736 { $$ = make_postfix_op (QUOTE, $1, $2); } |
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737 | postfix_expr TRANSPOSE |
|
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738 { $$ = make_postfix_op (TRANSPOSE, $1, $2); } |
|
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739 | postfix_expr indirect_ref_op STRUCT_ELT |
|
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740 { $$ = make_indirect_ref ($1, $3->text ()); } |
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|
741 | postfix_expr indirect_ref_op '(' expression ')' |
|
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742 { $$ = make_indirect_ref ($1, $4); } |
| 2970 | 743 ; |
| 744 | |
|
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|
745 prefix_expr : postfix_expr |
| 2970 | 746 { $$ = $1; } |
| 3178 | 747 | binary_expr |
| 748 { $$ = $1; } | |
| 2970 | 749 | PLUS_PLUS prefix_expr %prec UNARY |
| 750 { $$ = make_prefix_op (PLUS_PLUS, $2, $1); } | |
| 751 | MINUS_MINUS prefix_expr %prec UNARY | |
| 752 { $$ = make_prefix_op (MINUS_MINUS, $2, $1); } | |
| 753 | EXPR_NOT prefix_expr %prec UNARY | |
| 754 { $$ = make_prefix_op (EXPR_NOT, $2, $1); } | |
| 755 | '+' prefix_expr %prec UNARY | |
| 4965 | 756 { $$ = make_prefix_op ('+', $2, $1); } |
| 2970 | 757 | '-' prefix_expr %prec UNARY |
| 758 { $$ = make_prefix_op ('-', $2, $1); } | |
| 759 ; | |
| 760 | |
| 3178 | 761 binary_expr : prefix_expr POW prefix_expr |
| 2970 | 762 { $$ = make_binary_op (POW, $1, $2, $3); } |
| 3178 | 763 | prefix_expr EPOW prefix_expr |
| 2970 | 764 { $$ = make_binary_op (EPOW, $1, $2, $3); } |
| 3178 | 765 | prefix_expr '+' prefix_expr |
| 2970 | 766 { $$ = make_binary_op ('+', $1, $2, $3); } |
| 3178 | 767 | prefix_expr '-' prefix_expr |
| 2970 | 768 { $$ = make_binary_op ('-', $1, $2, $3); } |
| 3178 | 769 | prefix_expr '*' prefix_expr |
| 2970 | 770 { $$ = make_binary_op ('*', $1, $2, $3); } |
| 3178 | 771 | prefix_expr '/' prefix_expr |
| 2970 | 772 { $$ = make_binary_op ('/', $1, $2, $3); } |
| 3178 | 773 | prefix_expr EPLUS prefix_expr |
| 2970 | 774 { $$ = make_binary_op ('+', $1, $2, $3); } |
| 3178 | 775 | prefix_expr EMINUS prefix_expr |
| 2970 | 776 { $$ = make_binary_op ('-', $1, $2, $3); } |
| 3178 | 777 | prefix_expr EMUL prefix_expr |
| 2970 | 778 { $$ = make_binary_op (EMUL, $1, $2, $3); } |
| 3178 | 779 | prefix_expr EDIV prefix_expr |
| 2970 | 780 { $$ = make_binary_op (EDIV, $1, $2, $3); } |
| 3178 | 781 | prefix_expr LEFTDIV prefix_expr |
| 2970 | 782 { $$ = make_binary_op (LEFTDIV, $1, $2, $3); } |
| 3178 | 783 | prefix_expr ELEFTDIV prefix_expr |
| 2970 | 784 { $$ = make_binary_op (ELEFTDIV, $1, $2, $3); } |
| 785 ; | |
| 786 | |
| 787 colon_expr : colon_expr1 | |
| 788 { $$ = finish_colon_expression ($1); } | |
| 789 ; | |
| 790 | |
| 3178 | 791 colon_expr1 : prefix_expr |
| 2970 | 792 { $$ = new tree_colon_expression ($1); } |
| 3178 | 793 | colon_expr1 ':' prefix_expr |
| 2970 | 794 { |
| 795 if (! ($$ = $1->append ($3))) | |
| 796 ABORT_PARSE; | |
| 797 } | |
| 798 ; | |
| 799 | |
| 800 simple_expr : colon_expr | |
| 801 { $$ = $1; } | |
| 802 | simple_expr LSHIFT simple_expr | |
| 803 { $$ = make_binary_op (LSHIFT, $1, $2, $3); } | |
| 804 | simple_expr RSHIFT simple_expr | |
| 805 { $$ = make_binary_op (RSHIFT, $1, $2, $3); } | |
| 806 | simple_expr EXPR_LT simple_expr | |
| 807 { $$ = make_binary_op (EXPR_LT, $1, $2, $3); } | |
| 808 | simple_expr EXPR_LE simple_expr | |
| 809 { $$ = make_binary_op (EXPR_LE, $1, $2, $3); } | |
| 810 | simple_expr EXPR_EQ simple_expr | |
| 811 { $$ = make_binary_op (EXPR_EQ, $1, $2, $3); } | |
| 812 | simple_expr EXPR_GE simple_expr | |
| 813 { $$ = make_binary_op (EXPR_GE, $1, $2, $3); } | |
| 814 | simple_expr EXPR_GT simple_expr | |
| 815 { $$ = make_binary_op (EXPR_GT, $1, $2, $3); } | |
| 816 | simple_expr EXPR_NE simple_expr | |
| 817 { $$ = make_binary_op (EXPR_NE, $1, $2, $3); } | |
| 818 | simple_expr EXPR_AND simple_expr | |
| 819 { $$ = make_binary_op (EXPR_AND, $1, $2, $3); } | |
| 820 | simple_expr EXPR_OR simple_expr | |
| 821 { $$ = make_binary_op (EXPR_OR, $1, $2, $3); } | |
| 822 | simple_expr EXPR_AND_AND simple_expr | |
| 823 { $$ = make_boolean_op (EXPR_AND_AND, $1, $2, $3); } | |
| 824 | simple_expr EXPR_OR_OR simple_expr | |
| 825 { $$ = make_boolean_op (EXPR_OR_OR, $1, $2, $3); } | |
| 826 ; | |
| 827 | |
| 828 // Arrange for the lexer to return CLOSE_BRACE for `]' by looking ahead | |
| 829 // one token for an assignment op. | |
| 830 | |
| 831 assign_lhs : simple_expr | |
| 5841 | 832 { |
| 833 $$ = new tree_argument_list ($1); | |
| 834 $$->mark_as_simple_assign_lhs (); | |
| 835 } | |
| 5615 | 836 | '[' arg_list CLOSE_BRACE |
| 3189 | 837 { |
| 5615 | 838 $$ = $2; |
| 3189 | 839 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
|
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840 for (std::set<std::string>::const_iterator p = lexer_flags.pending_local_variables.begin (); |
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841 p != lexer_flags.pending_local_variables.end (); |
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|
842 p++) |
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|
843 { |
|
8881
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|
844 symbol_table::force_variable (*p); |
|
8001
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|
845 } |
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846 lexer_flags.pending_local_variables.clear (); |
| 3189 | 847 } |
| 2970 | 848 ; |
| 849 | |
| 850 assign_expr : assign_lhs '=' expression | |
| 851 { $$ = make_assign_op ('=', $1, $2, $3); } | |
| 852 | assign_lhs ADD_EQ expression | |
| 853 { $$ = make_assign_op (ADD_EQ, $1, $2, $3); } | |
| 854 | assign_lhs SUB_EQ expression | |
| 855 { $$ = make_assign_op (SUB_EQ, $1, $2, $3); } | |
| 856 | assign_lhs MUL_EQ expression | |
| 857 { $$ = make_assign_op (MUL_EQ, $1, $2, $3); } | |
| 858 | assign_lhs DIV_EQ expression | |
| 859 { $$ = make_assign_op (DIV_EQ, $1, $2, $3); } | |
| 3204 | 860 | assign_lhs LEFTDIV_EQ expression |
| 861 { $$ = make_assign_op (LEFTDIV_EQ, $1, $2, $3); } | |
| 4018 | 862 | assign_lhs POW_EQ expression |
| 863 { $$ = make_assign_op (POW_EQ, $1, $2, $3); } | |
| 2970 | 864 | assign_lhs LSHIFT_EQ expression |
| 865 { $$ = make_assign_op (LSHIFT_EQ, $1, $2, $3); } | |
| 866 | assign_lhs RSHIFT_EQ expression | |
| 867 { $$ = make_assign_op (RSHIFT_EQ, $1, $2, $3); } | |
| 868 | assign_lhs EMUL_EQ expression | |
| 869 { $$ = make_assign_op (EMUL_EQ, $1, $2, $3); } | |
| 870 | assign_lhs EDIV_EQ expression | |
| 871 { $$ = make_assign_op (EDIV_EQ, $1, $2, $3); } | |
| 3204 | 872 | assign_lhs ELEFTDIV_EQ expression |
| 873 { $$ = make_assign_op (ELEFTDIV_EQ, $1, $2, $3); } | |
| 4018 | 874 | assign_lhs EPOW_EQ expression |
| 875 { $$ = make_assign_op (EPOW_EQ, $1, $2, $3); } | |
| 2970 | 876 | assign_lhs AND_EQ expression |
| 877 { $$ = make_assign_op (AND_EQ, $1, $2, $3); } | |
| 878 | assign_lhs OR_EQ expression | |
| 879 { $$ = make_assign_op (OR_EQ, $1, $2, $3); } | |
| 880 ; | |
| 881 | |
| 882 expression : simple_expr | |
| 883 { $$ = $1; } | |
| 884 | assign_expr | |
| 885 { $$ = $1; } | |
| 4935 | 886 | anon_fcn_handle |
| 887 { $$ = $1; } | |
| 2970 | 888 ; |
| 889 | |
| 890 // ================================================ | |
| 891 // Commands, declarations, and function definitions | |
| 892 // ================================================ | |
| 893 | |
| 894 command : declaration | |
| 895 { $$ = $1; } | |
| 896 | select_command | |
| 897 { $$ = $1; } | |
| 898 | loop_command | |
| 899 { $$ = $1; } | |
| 4207 | 900 | jump_command |
| 901 { $$ = $1; } | |
| 2970 | 902 | except_command |
| 903 { $$ = $1; } | |
| 904 | function | |
| 905 { $$ = $1; } | |
|
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906 | script |
|
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907 { $$ = $1; } |
| 2970 | 908 ; |
| 909 | |
| 910 // ===================== | |
| 911 // Declaration statemnts | |
| 912 // ===================== | |
| 913 | |
|
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914 parsing_decl_list |
|
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915 : // empty |
|
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916 { lexer_flags.looking_at_decl_list = true; } |
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917 |
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918 declaration : GLOBAL parsing_decl_list decl1 |
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919 { |
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920 $$ = make_decl_command (GLOBAL, $1, $3); |
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921 lexer_flags.looking_at_decl_list = false; |
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922 } |
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923 | STATIC parsing_decl_list decl1 |
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924 { |
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925 $$ = make_decl_command (STATIC, $1, $3); |
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926 lexer_flags.looking_at_decl_list = false; |
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927 } |
| 2970 | 928 ; |
| 929 | |
| 930 decl1 : decl2 | |
| 931 { $$ = new tree_decl_init_list ($1); } | |
| 932 | decl1 decl2 | |
| 933 { | |
| 934 $1->append ($2); | |
| 935 $$ = $1; | |
| 936 } | |
| 937 ; | |
| 938 | |
|
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939 decl_param_init : // empty |
|
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940 { lexer_flags.looking_at_initializer_expression = true; } |
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941 |
| 2970 | 942 decl2 : identifier |
| 943 { $$ = new tree_decl_elt ($1); } | |
|
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944 | identifier '=' decl_param_init expression |
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945 { |
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946 lexer_flags.looking_at_initializer_expression = false; |
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947 $$ = new tree_decl_elt ($1, $4); |
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948 } |
| 2970 | 949 ; |
| 950 | |
| 951 // ==================== | |
| 952 // Selection statements | |
| 953 // ==================== | |
| 954 | |
| 955 select_command : if_command | |
| 956 { $$ = $1; } | |
| 957 | switch_command | |
| 958 { $$ = $1; } | |
| 959 ; | |
| 960 | |
| 961 // ============ | |
| 962 // If statement | |
| 963 // ============ | |
| 964 | |
| 3665 | 965 if_command : IF stash_comment if_cmd_list END |
| 2970 | 966 { |
| 3665 | 967 if (! ($$ = finish_if_command ($1, $3, $4, $2))) |
| 2970 | 968 ABORT_PARSE; |
| 969 } | |
| 970 ; | |
| 971 | |
| 972 if_cmd_list : if_cmd_list1 | |
| 973 { $$ = $1; } | |
| 974 | if_cmd_list1 else_clause | |
| 975 { | |
| 976 $1->append ($2); | |
| 977 $$ = $1; | |
| 978 } | |
| 979 ; | |
| 980 | |
| 981 if_cmd_list1 : expression opt_sep opt_list | |
| 982 { $$ = start_if_command ($1, $3); } | |
| 983 | if_cmd_list1 elseif_clause | |
| 984 { | |
| 985 $1->append ($2); | |
| 986 $$ = $1; | |
| 987 } | |
| 988 ; | |
| 989 | |
| 3665 | 990 elseif_clause : ELSEIF stash_comment opt_sep expression opt_sep opt_list |
|
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991 { $$ = make_elseif_clause ($1, $4, $6, $2); } |
| 2970 | 992 ; |
| 993 | |
| 3665 | 994 else_clause : ELSE stash_comment opt_sep opt_list |
|
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995 { $$ = new tree_if_clause ($4, $2); } |
| 2970 | 996 ; |
| 997 | |
| 998 // ================ | |
| 999 // Switch statement | |
| 1000 // ================ | |
| 1001 | |
| 3665 | 1002 switch_command : SWITCH stash_comment expression opt_sep case_list END |
| 2970 | 1003 { |
| 3665 | 1004 if (! ($$ = finish_switch_command ($1, $3, $5, $6, $2))) |
| 2970 | 1005 ABORT_PARSE; |
| 1006 } | |
| 1007 ; | |
| 1008 | |
| 4044 | 1009 case_list : // empty |
| 1010 { $$ = new tree_switch_case_list (); } | |
| 1011 | case_list1 | |
| 2970 | 1012 { $$ = $1; } |
| 1013 | case_list1 default_case | |
| 1014 { | |
| 1015 $1->append ($2); | |
| 1016 $$ = $1; | |
| 1017 } | |
| 1018 ; | |
| 1019 | |
| 1020 case_list1 : switch_case | |
| 1021 { $$ = new tree_switch_case_list ($1); } | |
| 1022 | case_list1 switch_case | |
| 1023 { | |
| 1024 $1->append ($2); | |
| 1025 $$ = $1; | |
| 1026 } | |
| 1027 ; | |
| 1028 | |
| 4025 | 1029 switch_case : CASE stash_comment opt_sep expression opt_sep opt_list |
|
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1030 { $$ = make_switch_case ($1, $4, $6, $2); } |
| 2970 | 1031 ; |
| 1032 | |
| 3665 | 1033 default_case : OTHERWISE stash_comment opt_sep opt_list |
| 1034 { | |
| 1035 $$ = new tree_switch_case ($4, $2); | |
| 1036 } | |
| 2970 | 1037 ; |
| 1038 | |
| 1039 // ======= | |
| 1040 // Looping | |
| 1041 // ======= | |
| 1042 | |
| 3665 | 1043 loop_command : WHILE stash_comment expression opt_sep opt_list END |
| 2970 | 1044 { |
| 3665 | 1045 if (! ($$ = make_while_command ($1, $3, $5, $6, $2))) |
| 2970 | 1046 ABORT_PARSE; |
| 1047 } | |
| 3665 | 1048 | DO stash_comment opt_sep opt_list UNTIL expression |
| 3484 | 1049 { |
|
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1050 if (! ($$ = make_do_until_command ($5, $4, $6, $2))) |
| 3484 | 1051 ABORT_PARSE; |
| 1052 } | |
| 3665 | 1053 | FOR stash_comment assign_lhs '=' expression opt_sep opt_list END |
| 2970 | 1054 { |
| 3665 | 1055 if (! ($$ = make_for_command ($1, $3, $5, $7, $8, $2))) |
| 2970 | 1056 ABORT_PARSE; |
| 1057 } | |
| 5127 | 1058 | FOR stash_comment '(' assign_lhs '=' expression ')' opt_sep opt_list END |
| 1059 { | |
| 1060 if (! ($$ = make_for_command ($1, $4, $6, $9, $10, $2))) | |
| 1061 ABORT_PARSE; | |
| 1062 } | |
| 2970 | 1063 ; |
| 1064 | |
| 1065 // ======= | |
| 1066 // Jumping | |
| 1067 // ======= | |
| 1068 | |
| 4207 | 1069 jump_command : BREAK |
| 2970 | 1070 { |
| 4207 | 1071 if (! ($$ = make_break_command ($1))) |
| 2970 | 1072 ABORT_PARSE; |
| 1073 } | |
| 1074 | CONTINUE | |
| 1075 { | |
| 4207 | 1076 if (! ($$ = make_continue_command ($1))) |
| 2970 | 1077 ABORT_PARSE; |
| 1078 } | |
| 1079 | FUNC_RET | |
| 1080 { | |
| 4207 | 1081 if (! ($$ = make_return_command ($1))) |
| 2970 | 1082 ABORT_PARSE; |
| 1083 } | |
| 1084 ; | |
| 1085 | |
| 1086 // ========== | |
| 1087 // Exceptions | |
| 1088 // ========== | |
| 1089 | |
| 3665 | 1090 except_command : UNWIND stash_comment opt_sep opt_list CLEANUP |
| 1091 stash_comment opt_sep opt_list END | |
| 2970 | 1092 { |
| 3665 | 1093 if (! ($$ = make_unwind_command ($1, $4, $8, $9, $2, $6))) |
| 2970 | 1094 ABORT_PARSE; |
| 1095 } | |
| 3665 | 1096 | TRY stash_comment opt_sep opt_list CATCH |
| 1097 stash_comment opt_sep opt_list END | |
| 2970 | 1098 { |
| 3665 | 1099 if (! ($$ = make_try_command ($1, $4, $8, $9, $2, $6))) |
| 2970 | 1100 ABORT_PARSE; |
| 1101 } | |
| 5344 | 1102 | TRY stash_comment opt_sep opt_list END |
| 1103 { | |
| 1104 if (! ($$ = make_try_command ($1, $4, 0, $5, $2, 0))) | |
| 1105 ABORT_PARSE; | |
| 1106 } | |
| 2970 | 1107 ; |
| 1108 | |
| 1109 // =========================================== | |
| 1110 // Some `subroutines' for function definitions | |
| 1111 // =========================================== | |
| 1112 | |
| 7336 | 1113 push_fcn_symtab : // empty |
| 1114 { | |
| 1115 symtab_context.push (symbol_table::current_scope ()); | |
| 1116 symbol_table::set_scope (symbol_table::alloc_scope ()); | |
| 1117 | |
| 1118 if (! lexer_flags.parsing_nested_function) | |
| 1119 symbol_table::set_parent_scope (symbol_table::current_scope ()); | |
| 1120 } | |
| 2970 | 1121 ; |
| 1122 | |
| 1123 // =========================== | |
| 1124 // List of function parameters | |
| 1125 // =========================== | |
| 1126 | |
| 1127 param_list_beg : '(' | |
| 4935 | 1128 { |
| 1129 lexer_flags.looking_at_parameter_list = true; | |
| 1130 | |
| 1131 if (lexer_flags.looking_at_function_handle) | |
| 1132 { | |
| 7336 | 1133 symtab_context.push (symbol_table::current_scope ()); |
| 1134 symbol_table::set_scope (symbol_table::alloc_scope ()); | |
| 4935 | 1135 lexer_flags.looking_at_function_handle--; |
| 1136 } | |
| 1137 } | |
| 2970 | 1138 ; |
| 1139 | |
| 1140 param_list_end : ')' | |
| 1141 { lexer_flags.looking_at_parameter_list = false; } | |
| 1142 ; | |
| 1143 | |
| 4935 | 1144 param_list : param_list_beg param_list1 param_list_end |
| 2970 | 1145 { |
| 1146 lexer_flags.quote_is_transpose = false; | |
| 4935 | 1147 $$ = $2; |
| 2970 | 1148 } |
| 1149 | param_list_beg error | |
| 1150 { | |
| 1151 yyerror ("invalid parameter list"); | |
| 1152 $$ = 0; | |
| 1153 ABORT_PARSE; | |
| 1154 } | |
| 4935 | 1155 ; |
| 1156 | |
| 1157 param_list1 : // empty | |
| 1158 { $$ = 0; } | |
| 1159 | param_list2 | |
| 1160 { | |
| 1161 $1->mark_as_formal_parameters (); | |
|
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|
1162 if ($1->validate (tree_parameter_list::in)) |
|
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1163 $$ = $1; |
|
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1164 else |
|
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|
1165 ABORT_PARSE; |
| 4935 | 1166 } |
| 1167 ; | |
| 1168 | |
| 6215 | 1169 param_list2 : decl2 |
| 4935 | 1170 { $$ = new tree_parameter_list ($1); } |
| 6215 | 1171 | param_list2 ',' decl2 |
| 4935 | 1172 { |
| 1173 $1->append ($3); | |
| 1174 $$ = $1; | |
| 2970 | 1175 } |
| 1176 ; | |
| 1177 | |
| 1178 // =================================== | |
| 1179 // List of function return value names | |
| 1180 // =================================== | |
| 1181 | |
| 7336 | 1182 return_list : '[' ']' |
| 2970 | 1183 { |
| 1184 lexer_flags.looking_at_return_list = false; | |
| 1185 $$ = new tree_parameter_list (); | |
| 1186 } | |
| 7336 | 1187 | return_list1 |
| 1188 { | |
| 1189 lexer_flags.looking_at_return_list = false; | |
|
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1190 if ($1->validate (tree_parameter_list::out)) |
|
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1191 $$ = $1; |
|
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|
1192 else |
|
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|
1193 ABORT_PARSE; |
| 7336 | 1194 } |
| 1195 | '[' return_list1 ']' | |
| 2970 | 1196 { |
| 1197 lexer_flags.looking_at_return_list = false; | |
|
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|
1198 if ($2->validate (tree_parameter_list::out)) |
|
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1199 $$ = $2; |
|
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|
1200 else |
|
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|
1201 ABORT_PARSE; |
| 2970 | 1202 } |
| 1203 ; | |
| 1204 | |
| 1205 return_list1 : identifier | |
| 6215 | 1206 { $$ = new tree_parameter_list (new tree_decl_elt ($1)); } |
| 2970 | 1207 | return_list1 ',' identifier |
| 1208 { | |
| 6215 | 1209 $1->append (new tree_decl_elt ($3)); |
| 2970 | 1210 $$ = $1; |
| 1211 } | |
| 1212 ; | |
| 1213 | |
|
7715
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|
1214 // =========== |
|
5b4d278ec828
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|
1215 // Script file |
|
5b4d278ec828
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|
1216 // =========== |
|
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|
1217 |
|
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|
1218 script : SCRIPT opt_list END_OF_INPUT |
|
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|
1219 { |
|
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|
1220 tree_statement *end_of_script |
|
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|
1221 = make_end ("endscript", input_line_number, |
|
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|
1222 current_input_column); |
|
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|
1223 |
|
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|
1224 make_script ($2, end_of_script); |
|
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|
1225 |
|
7715
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1226 $$ = 0; |
|
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|
1227 } |
|
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|
1228 ; |
|
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|
1229 |
| 2970 | 1230 // =================== |
| 1231 // Function definition | |
| 1232 // =================== | |
| 1233 | |
| 7336 | 1234 function_beg : push_fcn_symtab FCN stash_comment |
| 1235 { $$ = $3; } | |
| 2970 | 1236 ; |
| 1237 | |
| 7336 | 1238 function : function_beg function1 |
| 2970 | 1239 { |
|
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1240 $$ = finish_function (0, $2, $1); |
| 2970 | 1241 recover_from_parsing_function (); |
| 1242 } | |
| 7336 | 1243 | function_beg return_list '=' function1 |
| 2970 | 1244 { |
|
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1245 $$ = finish_function ($2, $4, $1); |
| 2970 | 1246 recover_from_parsing_function (); |
| 1247 } | |
| 1248 ; | |
| 1249 | |
| 7336 | 1250 fcn_name : identifier |
| 2970 | 1251 { |
| 4238 | 1252 std::string id_name = $1->name (); |
| 1253 | |
| 1254 if (reading_fcn_file | |
| 1255 && ! lexer_flags.parsing_nested_function) | |
| 1256 parent_function_name = (curr_fcn_file_name == id_name) | |
| 1257 ? id_name : curr_fcn_file_name; | |
| 1258 | |
| 1259 lexer_flags.parsed_function_name = true; | |
| 1260 | |
| 1261 $$ = $1; | |
| 1262 } | |
| 1263 ; | |
| 1264 | |
| 7336 | 1265 function1 : fcn_name function2 |
| 4238 | 1266 { |
| 4872 | 1267 std::string fname = $1->name (); |
| 1268 | |
| 1269 delete $1; | |
| 1270 | |
| 1271 if (! ($$ = frob_function (fname, $2))) | |
| 2970 | 1272 ABORT_PARSE; |
| 1273 } | |
| 1274 ; | |
| 1275 | |
| 7336 | 1276 function2 : param_list opt_sep opt_list function_end |
|
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|
1277 { $$ = start_function ($1, $3, $4); } |
| 7336 | 1278 | opt_sep opt_list function_end |
|
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|
1279 { $$ = start_function (0, $2, $3); } |
| 2970 | 1280 ; |
| 1281 | |
| 1282 function_end : END | |
| 1283 { | |
|
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|
1284 if (end_token_ok ($1, token::function_end)) |
|
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|
1285 $$ = make_end ("endfunction", $1->line (), $1->column ()); |
|
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|
1286 else |
| 2970 | 1287 ABORT_PARSE; |
| 1288 } | |
| 1289 | END_OF_INPUT | |
| 1290 { | |
| 4240 | 1291 if (lexer_flags.parsing_nested_function) |
| 1292 lexer_flags.parsing_nested_function = -1; | |
| 4238 | 1293 |
|
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|
1294 if (reading_fcn_file || reading_script_file |
|
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|
1295 || get_input_from_eval_string) |
|
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diff
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1296 $$ = make_end ("endfunction", input_line_number, |
|
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|
1297 current_input_column); |
|
73c4516fae10
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|
1298 else |
| 2970 | 1299 YYABORT; |
| 1300 } | |
| 1301 ; | |
| 1302 | |
| 1303 // ============= | |
| 1304 // Miscellaneous | |
| 1305 // ============= | |
| 1306 | |
| 3665 | 1307 stash_comment : // empty |
| 1308 { $$ = octave_comment_buffer::get_comment (); } | |
| 1309 ; | |
| 1310 | |
| 2970 | 1311 parse_error : LEXICAL_ERROR |
| 1312 { yyerror ("parse error"); } | |
| 1313 | error | |
| 1 | 1314 ; |
| 1315 | |
| 2525 | 1316 sep_no_nl : ',' |
| 1317 { $$ = ','; } | |
| 1318 | ';' | |
| 1319 { $$ = ';'; } | |
| 1320 | sep_no_nl ',' | |
| 1321 { $$ = $1; } | |
| 1322 | sep_no_nl ';' | |
| 1323 { $$ = $1; } | |
| 1324 ; | |
| 1325 | |
| 1326 opt_sep_no_nl : // empty | |
| 1327 { $$ = 0; } | |
| 1328 | sep_no_nl | |
| 1329 { $$ = $1; } | |
| 1330 ; | |
| 1331 | |
| 1332 sep : ',' | |
| 1333 { $$ = ','; } | |
| 1334 | ';' | |
| 1335 { $$ = ';'; } | |
| 1336 | '\n' | |
| 1337 { $$ = '\n'; } | |
| 1338 | sep ',' | |
| 1339 { $$ = $1; } | |
| 1340 | sep ';' | |
| 1341 { $$ = $1; } | |
| 1342 | sep '\n' | |
| 1343 { $$ = $1; } | |
| 1344 ; | |
| 1345 | |
| 1346 opt_sep : // empty | |
| 1347 { $$ = 0; } | |
| 1348 | sep | |
| 1349 { $$ = $1; } | |
| 1350 ; | |
| 1351 | |
| 1 | 1352 %% |
| 1353 | |
| 666 | 1354 // Generic error messages. |
| 1355 | |
| 1 | 1356 static void |
| 2805 | 1357 yyerror (const char *s) |
| 1 | 1358 { |
| 143 | 1359 int err_col = current_input_column - 1; |
| 1 | 1360 |
| 5765 | 1361 std::ostringstream output_buf; |
| 1 | 1362 |
| 1005 | 1363 if (reading_fcn_file || reading_script_file) |
| 1364 output_buf << "parse error near line " << input_line_number | |
| 1607 | 1365 << " of file " << curr_fcn_file_full_name; |
| 1005 | 1366 else |
| 1367 output_buf << "parse error:"; | |
| 581 | 1368 |
| 1005 | 1369 if (s && strcmp (s, "parse error") != 0) |
| 1370 output_buf << "\n\n " << s; | |
| 1371 | |
| 1372 output_buf << "\n\n"; | |
| 1 | 1373 |
| 1755 | 1374 if (! current_input_line.empty ()) |
| 1 | 1375 { |
| 1755 | 1376 size_t len = current_input_line.length (); |
| 1060 | 1377 |
| 1755 | 1378 if (current_input_line[len-1] == '\n') |
| 1379 current_input_line.resize (len-1); | |
| 1005 | 1380 |
| 4051 | 1381 // Print the line, maybe with a pointer near the error token. |
| 1005 | 1382 |
| 1755 | 1383 output_buf << ">>> " << current_input_line << "\n"; |
| 1060 | 1384 |
| 1385 if (err_col == 0) | |
| 1386 err_col = len; | |
| 1387 | |
| 1388 for (int i = 0; i < err_col + 3; i++) | |
| 1389 output_buf << " "; | |
| 1390 | |
| 1391 output_buf << "^"; | |
| 1 | 1392 } |
| 1005 | 1393 |
| 5765 | 1394 output_buf << "\n"; |
| 1395 | |
| 1396 std::string msg = output_buf.str (); | |
| 1397 | |
| 1398 parse_error ("%s", msg.c_str ()); | |
| 1 | 1399 } |
| 1400 | |
| 666 | 1401 // Error mesages for mismatched end tokens. |
| 1402 | |
| 496 | 1403 static void |
| 2805 | 1404 end_error (const char *type, token::end_tok_type ettype, int l, int c) |
| 496 | 1405 { |
| 2805 | 1406 static const char *fmt |
| 1407 = "`%s' command matched by `%s' near line %d column %d"; | |
| 496 | 1408 |
| 1409 switch (ettype) | |
| 1410 { | |
| 1411 case token::simple_end: | |
| 1412 error (fmt, type, "end", l, c); | |
| 1413 break; | |
| 777 | 1414 |
| 496 | 1415 case token::for_end: |
| 1416 error (fmt, type, "endfor", l, c); | |
| 1417 break; | |
| 777 | 1418 |
| 496 | 1419 case token::function_end: |
| 1420 error (fmt, type, "endfunction", l, c); | |
| 1421 break; | |
| 777 | 1422 |
| 496 | 1423 case token::if_end: |
| 1424 error (fmt, type, "endif", l, c); | |
| 1425 break; | |
| 777 | 1426 |
| 3233 | 1427 case token::switch_end: |
| 1428 error (fmt, type, "endswitch", l, c); | |
| 1429 break; | |
| 1430 | |
| 496 | 1431 case token::while_end: |
| 1432 error (fmt, type, "endwhile", l, c); | |
| 1433 break; | |
| 777 | 1434 |
| 5400 | 1435 case token::try_catch_end: |
| 1436 error (fmt, type, "end_try_catch", l, c); | |
| 1437 break; | |
| 1438 | |
| 1371 | 1439 case token::unwind_protect_end: |
| 1440 error (fmt, type, "end_unwind_protect", l, c); | |
| 1441 break; | |
| 1442 | |
| 496 | 1443 default: |
| 1444 panic_impossible (); | |
| 1445 break; | |
| 1446 } | |
| 1447 } | |
| 1448 | |
| 666 | 1449 // Check to see that end tokens are properly matched. |
| 1450 | |
| 2857 | 1451 static bool |
| 1452 end_token_ok (token *tok, token::end_tok_type expected) | |
| 143 | 1453 { |
| 2857 | 1454 bool retval = true; |
| 1455 | |
| 143 | 1456 token::end_tok_type ettype = tok->ettype (); |
| 2857 | 1457 |
| 143 | 1458 if (ettype != expected && ettype != token::simple_end) |
| 1459 { | |
| 2857 | 1460 retval = false; |
| 1461 | |
| 143 | 1462 yyerror ("parse error"); |
| 1463 | |
| 1464 int l = tok->line (); | |
| 1465 int c = tok->column (); | |
| 1466 | |
| 1467 switch (expected) | |
| 1468 { | |
| 1469 case token::for_end: | |
| 1470 end_error ("for", ettype, l, c); | |
| 1471 break; | |
| 777 | 1472 |
| 143 | 1473 case token::function_end: |
| 1474 end_error ("function", ettype, l, c); | |
| 1475 break; | |
| 777 | 1476 |
| 143 | 1477 case token::if_end: |
| 1478 end_error ("if", ettype, l, c); | |
| 1479 break; | |
| 777 | 1480 |
| 1489 | 1481 case token::try_catch_end: |
| 1482 end_error ("try", ettype, l, c); | |
| 1483 break; | |
| 1484 | |
| 2764 | 1485 case token::switch_end: |
| 1486 end_error ("switch", ettype, l, c); | |
| 1487 break; | |
| 1488 | |
| 1489 | 1489 case token::unwind_protect_end: |
| 1490 end_error ("unwind_protect", ettype, l, c); | |
| 1491 break; | |
| 1492 | |
| 143 | 1493 case token::while_end: |
| 1494 end_error ("while", ettype, l, c); | |
| 1495 break; | |
| 777 | 1496 |
| 143 | 1497 default: |
| 1498 panic_impossible (); | |
| 1499 break; | |
| 1500 } | |
| 1501 } | |
| 2857 | 1502 |
| 1503 return retval; | |
| 143 | 1504 } |
| 1505 | |
| 666 | 1506 // Maybe print a warning if an assignment expression is used as the |
| 1507 // test in a logical expression. | |
| 1508 | |
| 496 | 1509 static void |
| 1510 maybe_warn_assign_as_truth_value (tree_expression *expr) | |
| 1 | 1511 { |
| 5781 | 1512 if (expr->is_assignment_expression () |
| 2961 | 1513 && expr->paren_count () < 2) |
| 1 | 1514 { |
|
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1515 if (curr_fcn_file_full_name.empty ()) |
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1516 warning_with_id |
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1517 ("Octave:assign-as-truth-value", |
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1518 "suggest parenthesis around assignment used as truth value"); |
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1519 else |
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1520 warning_with_id |
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1521 ("Octave:assign-as-truth-value", |
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1522 "suggest parenthesis around assignment used as truth value near line %d, column %d in file `%s'", |
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1523 expr->line (), expr->column (), curr_fcn_file_full_name.c_str ()); |
| 1 | 1524 } |
| 1525 } | |
| 578 | 1526 |
| 2764 | 1527 // Maybe print a warning about switch labels that aren't constants. |
| 1528 | |
| 1529 static void | |
| 1530 maybe_warn_variable_switch_label (tree_expression *expr) | |
| 1531 { | |
| 5781 | 1532 if (! expr->is_constant ()) |
|
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1533 { |
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1534 if (curr_fcn_file_full_name.empty ()) |
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1535 warning_with_id ("Octave:variable-switch-label", |
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1536 "variable switch label"); |
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1537 else |
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1538 warning_with_id |
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1539 ("Octave:variable-switch-label", |
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1540 "variable switch label near line %d, column %d in file `%s'", |
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1541 expr->line (), expr->column (), curr_fcn_file_full_name.c_str ()); |
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1542 } |
| 2764 | 1543 } |
| 1544 | |
| 2533 | 1545 static tree_expression * |
| 1546 fold (tree_binary_expression *e) | |
| 1547 { | |
| 3110 | 1548 tree_expression *retval = e; |
| 1549 | |
| 3292 | 1550 unwind_protect::begin_frame ("fold_binary_expression"); |
| 3110 | 1551 |
| 1552 unwind_protect_int (error_state); | |
| 4452 | 1553 unwind_protect_int (warning_state); |
| 3110 | 1554 |
| 3815 | 1555 unwind_protect_bool (discard_error_messages); |
| 4452 | 1556 unwind_protect_bool (discard_warning_messages); |
| 1557 | |
| 3815 | 1558 discard_error_messages = true; |
| 4452 | 1559 discard_warning_messages = true; |
| 2533 | 1560 |
| 1561 tree_expression *op1 = e->lhs (); | |
| 1562 tree_expression *op2 = e->rhs (); | |
| 1563 | |
| 5161 | 1564 octave_value::binary_op op_type = e->op_type (); |
| 1565 | |
| 1566 if (op1->is_constant () && op2->is_constant () | |
| 5781 | 1567 && (! ((warning_enabled ("Octave:associativity-change") |
| 5161 | 1568 && (op_type == POW || op_type == EPOW)) |
| 5781 | 1569 || (warning_enabled ("Octave:precedence-change") |
| 5161 | 1570 && (op_type == EXPR_OR || op_type == EXPR_OR_OR))))) |
| 2533 | 1571 { |
|
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1572 octave_value tmp = e->rvalue1 (); |
| 2533 | 1573 |
| 3489 | 1574 if (! (error_state || warning_state)) |
| 2533 | 1575 { |
|
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1576 tree_constant *tc_retval |
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1577 = new tree_constant (tmp, op1->line (), op1->column ()); |
| 2533 | 1578 |
| 5765 | 1579 std::ostringstream buf; |
| 2533 | 1580 |
| 1581 tree_print_code tpc (buf); | |
| 1582 | |
| 1583 e->accept (tpc); | |
| 1584 | |
| 5765 | 1585 tc_retval->stash_original_text (buf.str ()); |
| 2533 | 1586 |
| 1587 delete e; | |
| 1588 | |
| 1589 retval = tc_retval; | |
| 1590 } | |
| 1591 } | |
| 3110 | 1592 |
| 3292 | 1593 unwind_protect::run_frame ("fold_binary_expression"); |
| 1594 | |
| 1595 return retval; | |
| 1596 } | |
| 1597 | |
| 1598 static tree_expression * | |
| 1599 fold (tree_unary_expression *e) | |
| 1600 { | |
| 1601 tree_expression *retval = e; | |
| 1602 | |
| 1603 unwind_protect::begin_frame ("fold_unary_expression"); | |
| 1604 | |
| 1605 unwind_protect_int (error_state); | |
| 4452 | 1606 unwind_protect_int (warning_state); |
| 3292 | 1607 |
| 3815 | 1608 unwind_protect_bool (discard_error_messages); |
| 4452 | 1609 unwind_protect_bool (discard_warning_messages); |
| 1610 | |
| 3815 | 1611 discard_error_messages = true; |
| 4452 | 1612 discard_warning_messages = true; |
| 3292 | 1613 |
| 1614 tree_expression *op = e->operand (); | |
| 1615 | |
| 1616 if (op->is_constant ()) | |
| 1617 { | |
|
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1618 octave_value tmp = e->rvalue1 (); |
| 3292 | 1619 |
| 3489 | 1620 if (! (error_state || warning_state)) |
| 3292 | 1621 { |
|
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1622 tree_constant *tc_retval |
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1623 = new tree_constant (tmp, op->line (), op->column ()); |
| 3292 | 1624 |
| 5765 | 1625 std::ostringstream buf; |
| 3292 | 1626 |
| 1627 tree_print_code tpc (buf); | |
| 1628 | |
| 1629 e->accept (tpc); | |
| 1630 | |
| 5765 | 1631 tc_retval->stash_original_text (buf.str ()); |
| 3292 | 1632 |
| 1633 delete e; | |
| 1634 | |
| 1635 retval = tc_retval; | |
| 1636 } | |
| 1637 } | |
| 1638 | |
| 1639 unwind_protect::run_frame ("fold_unary_expression"); | |
| 2533 | 1640 |
| 1641 return retval; | |
| 1642 } | |
| 1643 | |
| 1623 | 1644 // Finish building a range. |
| 1645 | |
| 1646 static tree_expression * | |
| 1647 finish_colon_expression (tree_colon_expression *e) | |
| 1648 { | |
| 3110 | 1649 tree_expression *retval = e; |
| 1650 | |
| 1651 unwind_protect::begin_frame ("finish_colon_expression"); | |
| 1652 | |
| 1653 unwind_protect_int (error_state); | |
| 4452 | 1654 unwind_protect_int (warning_state); |
| 3110 | 1655 |
| 3815 | 1656 unwind_protect_bool (discard_error_messages); |
| 4452 | 1657 unwind_protect_bool (discard_warning_messages); |
| 1658 | |
| 3815 | 1659 discard_error_messages = true; |
| 4452 | 1660 discard_warning_messages = true; |
| 1623 | 1661 |
| 2533 | 1662 tree_expression *base = e->base (); |
| 1663 tree_expression *limit = e->limit (); | |
| 1664 tree_expression *incr = e->increment (); | |
| 1665 | |
| 2970 | 1666 if (base) |
| 1623 | 1667 { |
| 2970 | 1668 if (limit) |
| 2533 | 1669 { |
| 2970 | 1670 if (base->is_constant () && limit->is_constant () |
| 1671 && (! incr || (incr && incr->is_constant ()))) | |
| 1672 { | |
|
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1673 octave_value tmp = e->rvalue1 (); |
| 2970 | 1674 |
| 3489 | 1675 if (! (error_state || warning_state)) |
| 2970 | 1676 { |
|
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1677 tree_constant *tc_retval |
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1678 = new tree_constant (tmp, base->line (), base->column ()); |
| 2970 | 1679 |
| 5765 | 1680 std::ostringstream buf; |
| 2970 | 1681 |
| 1682 tree_print_code tpc (buf); | |
| 1683 | |
| 1684 e->accept (tpc); | |
| 1685 | |
| 5765 | 1686 tc_retval->stash_original_text (buf.str ()); |
| 2970 | 1687 |
| 1688 delete e; | |
| 1689 | |
| 1690 retval = tc_retval; | |
| 1691 } | |
| 1692 } | |
| 2533 | 1693 } |
| 1694 else | |
| 2970 | 1695 { |
| 2990 | 1696 e->preserve_base (); |
| 1697 delete e; | |
| 2970 | 1698 |
| 5775 | 1699 // FIXME -- need to attempt constant folding here |
| 2970 | 1700 // too (we need a generic way to do that). |
| 1701 retval = base; | |
| 1702 } | |
| 1623 | 1703 } |
| 1704 | |
| 3110 | 1705 unwind_protect::run_frame ("finish_colon_expression"); |
| 1706 | |
| 1623 | 1707 return retval; |
| 1708 } | |
| 1709 | |
| 1607 | 1710 // Make a constant. |
| 1711 | |
| 2375 | 1712 static tree_constant * |
| 1607 | 1713 make_constant (int op, token *tok_val) |
| 1714 { | |
| 1715 int l = tok_val->line (); | |
| 1716 int c = tok_val->column (); | |
| 1717 | |
| 3216 | 1718 tree_constant *retval = 0; |
| 1607 | 1719 |
| 1720 switch (op) | |
| 1721 { | |
| 1722 case NUM: | |
| 2533 | 1723 { |
| 2883 | 1724 octave_value tmp (tok_val->number ()); |
| 1725 retval = new tree_constant (tmp, l, c); | |
| 2533 | 1726 retval->stash_original_text (tok_val->text_rep ()); |
| 1727 } | |
| 1607 | 1728 break; |
| 1729 | |
| 1730 case IMAG_NUM: | |
| 1731 { | |
| 2883 | 1732 octave_value tmp (Complex (0.0, tok_val->number ())); |
| 1733 retval = new tree_constant (tmp, l, c); | |
| 1607 | 1734 retval->stash_original_text (tok_val->text_rep ()); |
| 1735 } | |
| 1736 break; | |
| 1737 | |
| 5279 | 1738 case DQ_STRING: |
| 1739 case SQ_STRING: | |
| 2883 | 1740 { |
|
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1741 std::string txt = tok_val->text (); |
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1742 |
|
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1743 char delim = op == DQ_STRING ? '"' : '\''; |
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1744 octave_value tmp (txt, delim); |
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1745 |
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1746 if (txt.empty ()) |
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1747 { |
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1748 if (op == DQ_STRING) |
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1749 tmp = octave_null_str::instance; |
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1750 else |
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1751 tmp = octave_null_sq_str::instance; |
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1752 } |
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1753 |
| 2883 | 1754 retval = new tree_constant (tmp, l, c); |
|
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1755 |
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1756 if (op == DQ_STRING) |
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1757 txt = undo_string_escapes (txt); |
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1758 |
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1759 // FIXME -- maybe this should also be handled by |
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1760 // tok_val->text_rep () for character strings? |
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1761 retval->stash_original_text (delim + txt + delim); |
| 2883 | 1762 } |
| 1607 | 1763 break; |
| 1764 | |
| 1765 default: | |
| 1766 panic_impossible (); | |
| 1767 break; | |
| 1768 } | |
| 1769 | |
| 1770 return retval; | |
| 1771 } | |
| 1772 | |
| 4342 | 1773 // Make a function handle. |
| 1774 | |
| 1775 static tree_fcn_handle * | |
| 1776 make_fcn_handle (token *tok_val) | |
| 1777 { | |
| 1778 int l = tok_val->line (); | |
| 1779 int c = tok_val->column (); | |
| 1780 | |
| 1781 tree_fcn_handle *retval = new tree_fcn_handle (tok_val->text (), l, c); | |
| 1782 | |
| 1783 return retval; | |
| 1784 } | |
| 1785 | |
| 4935 | 1786 // Make an anonymous function handle. |
| 1787 | |
| 5861 | 1788 static tree_anon_fcn_handle * |
| 4935 | 1789 make_anon_fcn_handle (tree_parameter_list *param_list, tree_statement *stmt) |
| 1790 { | |
| 5775 | 1791 // FIXME -- need to get these from the location of the @ symbol. |
| 4935 | 1792 |
| 1793 int l = -1; | |
| 1794 int c = -1; | |
| 1795 | |
| 1796 tree_parameter_list *ret_list = 0; | |
| 1797 | |
| 7336 | 1798 symbol_table::scope_id fcn_scope = symbol_table::current_scope (); |
| 5861 | 1799 |
| 1800 if (symtab_context.empty ()) | |
| 1801 panic_impossible (); | |
| 1802 | |
| 7336 | 1803 symbol_table::set_scope (symtab_context.top ()); |
| 5861 | 1804 |
| 1805 symtab_context.pop (); | |
| 1806 | |
| 7351 | 1807 stmt->set_print_flag (false); |
| 4935 | 1808 |
| 1809 tree_statement_list *body = new tree_statement_list (stmt); | |
| 1810 | |
|
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1811 body->mark_as_anon_function_body (); |
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1812 |
| 5861 | 1813 tree_anon_fcn_handle *retval |
| 7336 | 1814 = new tree_anon_fcn_handle (param_list, ret_list, body, fcn_scope, l, c); |
| 4935 | 1815 |
| 1816 return retval; | |
| 1817 } | |
| 1818 | |
| 5161 | 1819 static void |
| 1820 maybe_warn_associativity_change (tree_expression *op) | |
| 1821 { | |
| 5781 | 1822 if (op->paren_count () == 0 && op->is_binary_expression ()) |
| 5161 | 1823 { |
| 1824 tree_binary_expression *e | |
| 1825 = dynamic_cast<tree_binary_expression *> (op); | |
| 1826 | |
| 1827 octave_value::binary_op op_type = e->op_type (); | |
| 1828 | |
| 1829 if (op_type == octave_value::op_pow | |
| 1830 || op_type == octave_value::op_el_pow) | |
| 1831 { | |
| 1832 std::string op_str = octave_value::binary_op_as_string (op_type); | |
| 1833 | |
|
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1834 if (curr_fcn_file_full_name.empty ()) |
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1835 warning_with_id |
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1836 ("Octave:associativity-change", |
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1837 "meaning may have changed due to change in associativity for %s operator", |
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1838 op_str.c_str ()); |
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1839 else |
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1840 warning_with_id |
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1841 ("Octave:associativity-change", |
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1842 "meaning may have changed due to change in associativity for %s operator near line %d, column %d in file `%s'", |
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1843 op_str.c_str (), op->line (), op->column (), |
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1844 curr_fcn_file_full_name.c_str ()); |
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1845 } |
| 5161 | 1846 } |
| 1847 } | |
| 1848 | |
| 666 | 1849 // Build a binary expression. |
| 1850 | |
| 578 | 1851 static tree_expression * |
| 1852 make_binary_op (int op, tree_expression *op1, token *tok_val, | |
| 1853 tree_expression *op2) | |
| 1854 { | |
| 2883 | 1855 octave_value::binary_op t = octave_value::unknown_binary_op; |
| 1623 | 1856 |
| 578 | 1857 switch (op) |
| 1858 { | |
| 1859 case POW: | |
| 3525 | 1860 t = octave_value::op_pow; |
| 5161 | 1861 maybe_warn_associativity_change (op1); |
| 578 | 1862 break; |
| 777 | 1863 |
| 578 | 1864 case EPOW: |
| 3525 | 1865 t = octave_value::op_el_pow; |
| 5161 | 1866 maybe_warn_associativity_change (op1); |
| 578 | 1867 break; |
| 777 | 1868 |
| 578 | 1869 case '+': |
| 3525 | 1870 t = octave_value::op_add; |
| 578 | 1871 break; |
| 777 | 1872 |
| 578 | 1873 case '-': |
| 3525 | 1874 t = octave_value::op_sub; |
| 578 | 1875 break; |
| 777 | 1876 |
| 578 | 1877 case '*': |
| 3525 | 1878 t = octave_value::op_mul; |
| 578 | 1879 break; |
| 777 | 1880 |
| 578 | 1881 case '/': |
| 3525 | 1882 t = octave_value::op_div; |
| 578 | 1883 break; |
| 777 | 1884 |
| 578 | 1885 case EMUL: |
| 3525 | 1886 t = octave_value::op_el_mul; |
| 578 | 1887 break; |
| 777 | 1888 |
| 578 | 1889 case EDIV: |
| 3525 | 1890 t = octave_value::op_el_div; |
| 578 | 1891 break; |
| 777 | 1892 |
| 578 | 1893 case LEFTDIV: |
| 3525 | 1894 t = octave_value::op_ldiv; |
| 578 | 1895 break; |
| 777 | 1896 |
| 578 | 1897 case ELEFTDIV: |
| 3525 | 1898 t = octave_value::op_el_ldiv; |
| 578 | 1899 break; |
| 777 | 1900 |
| 2899 | 1901 case LSHIFT: |
| 3525 | 1902 t = octave_value::op_lshift; |
| 2899 | 1903 break; |
| 1904 | |
| 1905 case RSHIFT: | |
| 3525 | 1906 t = octave_value::op_rshift; |
| 2899 | 1907 break; |
| 1908 | |
| 578 | 1909 case EXPR_LT: |
| 3525 | 1910 t = octave_value::op_lt; |
| 578 | 1911 break; |
| 777 | 1912 |
| 578 | 1913 case EXPR_LE: |
| 3525 | 1914 t = octave_value::op_le; |
| 578 | 1915 break; |
| 777 | 1916 |
| 578 | 1917 case EXPR_EQ: |
| 3525 | 1918 t = octave_value::op_eq; |
| 578 | 1919 break; |
| 777 | 1920 |
| 578 | 1921 case EXPR_GE: |
| 3525 | 1922 t = octave_value::op_ge; |
| 578 | 1923 break; |
| 777 | 1924 |
| 578 | 1925 case EXPR_GT: |
| 3525 | 1926 t = octave_value::op_gt; |
| 578 | 1927 break; |
| 777 | 1928 |
| 578 | 1929 case EXPR_NE: |
| 3525 | 1930 t = octave_value::op_ne; |
| 578 | 1931 break; |
| 777 | 1932 |
| 578 | 1933 case EXPR_AND: |
| 3525 | 1934 t = octave_value::op_el_and; |
| 578 | 1935 break; |
| 777 | 1936 |
| 578 | 1937 case EXPR_OR: |
| 3525 | 1938 t = octave_value::op_el_or; |
| 5781 | 1939 if (op2->paren_count () == 0 && op2->is_binary_expression ()) |
| 4023 | 1940 { |
| 1941 tree_binary_expression *e | |
| 1942 = dynamic_cast<tree_binary_expression *> (op2); | |
| 1943 | |
| 1944 if (e->op_type () == octave_value::op_el_and) | |
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1945 { |
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1946 if (curr_fcn_file_full_name.empty ()) |
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1947 warning_with_id |
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1948 ("Octave:precedence-change", |
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1949 "meaning may have changed due to change in precedence for & and | operators"); |
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1950 else |
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1951 warning_with_id |
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1952 ("Octave:precedence-change", |
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1953 "meaning may have changed due to change in precedence for & and | operators near line %d, column %d in file `%s'", |
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1954 op2->line (), op2->column (), |
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1955 curr_fcn_file_full_name.c_str ()); |
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1956 } |
| 4023 | 1957 } |
| 578 | 1958 break; |
| 777 | 1959 |
| 578 | 1960 default: |
| 1961 panic_impossible (); | |
| 1962 break; | |
| 1963 } | |
| 1964 | |
| 1965 int l = tok_val->line (); | |
| 1966 int c = tok_val->column (); | |
| 1967 | |
| 2533 | 1968 tree_binary_expression *e |
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1969 = maybe_compound_binary_expression (op1, op2, l, c, t); |
| 1623 | 1970 |
| 2533 | 1971 return fold (e); |
| 578 | 1972 } |
| 1973 | |
| 2375 | 1974 // Build a boolean expression. |
| 666 | 1975 |
| 578 | 1976 static tree_expression * |
| 2375 | 1977 make_boolean_op (int op, tree_expression *op1, token *tok_val, |
| 1978 tree_expression *op2) | |
| 578 | 1979 { |
| 2375 | 1980 tree_boolean_expression::type t; |
| 1981 | |
| 578 | 1982 switch (op) |
| 1983 { | |
| 2375 | 1984 case EXPR_AND_AND: |
| 2805 | 1985 t = tree_boolean_expression::bool_and; |
| 578 | 1986 break; |
| 777 | 1987 |
| 2375 | 1988 case EXPR_OR_OR: |
| 2805 | 1989 t = tree_boolean_expression::bool_or; |
| 5781 | 1990 if (op2->paren_count () == 0 && op2->is_boolean_expression ()) |
| 4023 | 1991 { |
| 1992 tree_boolean_expression *e | |
| 1993 = dynamic_cast<tree_boolean_expression *> (op2); | |
| 1994 | |
| 1995 if (e->op_type () == tree_boolean_expression::bool_and) | |
| 5781 | 1996 warning_with_id |
| 1997 ("Octave:precedence-change", | |
| 1998 "meaning may have changed due to change in precedence for && and || operators"); | |
| 4023 | 1999 } |
| 578 | 2000 break; |
| 777 | 2001 |
| 578 | 2002 default: |
| 2003 panic_impossible (); | |
| 2004 break; | |
| 2005 } | |
| 2006 | |
| 2007 int l = tok_val->line (); | |
| 2008 int c = tok_val->column (); | |
| 2009 | |
| 2533 | 2010 tree_boolean_expression *e |
| 2011 = new tree_boolean_expression (op1, op2, l, c, t); | |
| 2375 | 2012 |
| 2533 | 2013 return fold (e); |
| 578 | 2014 } |
| 2015 | |
| 2375 | 2016 // Build a prefix expression. |
| 666 | 2017 |
| 578 | 2018 static tree_expression * |
| 2960 | 2019 make_prefix_op (int op, tree_expression *op1, token *tok_val) |
| 578 | 2020 { |
| 3203 | 2021 octave_value::unary_op t = octave_value::unknown_unary_op; |
| 2375 | 2022 |
| 578 | 2023 switch (op) |
| 2024 { | |
| 2960 | 2025 case EXPR_NOT: |
| 3525 | 2026 t = octave_value::op_not; |
| 2960 | 2027 break; |
| 2028 | |
| 4965 | 2029 case '+': |
| 2030 t = octave_value::op_uplus; | |
| 2031 break; | |
| 2032 | |
| 2960 | 2033 case '-': |
| 3525 | 2034 t = octave_value::op_uminus; |
| 2960 | 2035 break; |
| 2036 | |
| 578 | 2037 case PLUS_PLUS: |
| 3525 | 2038 t = octave_value::op_incr; |
| 578 | 2039 break; |
| 777 | 2040 |
| 578 | 2041 case MINUS_MINUS: |
| 3525 | 2042 t = octave_value::op_decr; |
| 578 | 2043 break; |
| 777 | 2044 |
| 578 | 2045 default: |
| 2046 panic_impossible (); | |
| 2047 break; | |
| 2048 } | |
| 2049 | |
| 2050 int l = tok_val->line (); | |
| 2051 int c = tok_val->column (); | |
| 2052 | |
| 3292 | 2053 tree_prefix_expression *e |
| 2054 = new tree_prefix_expression (op1, l, c, t); | |
| 2055 | |
| 2056 return fold (e); | |
| 578 | 2057 } |
| 2058 | |
| 2375 | 2059 // Build a postfix expression. |
| 666 | 2060 |
| 578 | 2061 static tree_expression * |
| 2960 | 2062 make_postfix_op (int op, tree_expression *op1, token *tok_val) |
| 578 | 2063 { |
| 3203 | 2064 octave_value::unary_op t = octave_value::unknown_unary_op; |
| 1623 | 2065 |
| 578 | 2066 switch (op) |
| 2067 { | |
| 2960 | 2068 case QUOTE: |
| 3525 | 2069 t = octave_value::op_hermitian; |
| 2960 | 2070 break; |
| 2071 | |
| 2072 case TRANSPOSE: | |
| 3525 | 2073 t = octave_value::op_transpose; |
| 2960 | 2074 break; |
| 2075 | |
| 2375 | 2076 case PLUS_PLUS: |
| 3525 | 2077 t = octave_value::op_incr; |
| 578 | 2078 break; |
| 777 | 2079 |
| 2375 | 2080 case MINUS_MINUS: |
| 3525 | 2081 t = octave_value::op_decr; |
| 578 | 2082 break; |
| 777 | 2083 |
| 578 | 2084 default: |
| 2085 panic_impossible (); | |
| 2086 break; | |
| 2087 } | |
| 2088 | |
| 2089 int l = tok_val->line (); | |
| 2090 int c = tok_val->column (); | |
| 2091 | |
| 3292 | 2092 tree_postfix_expression *e |
| 2093 = new tree_postfix_expression (op1, l, c, t); | |
| 2094 | |
| 2095 return fold (e); | |
| 1623 | 2096 } |
| 2097 | |
| 2098 // Build an unwind-protect command. | |
| 2099 | |
| 2100 static tree_command * | |
| 2101 make_unwind_command (token *unwind_tok, tree_statement_list *body, | |
| 3665 | 2102 tree_statement_list *cleanup, token *end_tok, |
| 2103 octave_comment_list *lc, octave_comment_list *mc) | |
| 1623 | 2104 { |
| 2105 tree_command *retval = 0; | |
| 2106 | |
| 2857 | 2107 if (end_token_ok (end_tok, token::unwind_protect_end)) |
| 1623 | 2108 { |
| 3665 | 2109 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2110 | |
| 1623 | 2111 int l = unwind_tok->line (); |
| 2112 int c = unwind_tok->column (); | |
| 2113 | |
| 3665 | 2114 retval = new tree_unwind_protect_command (body, cleanup, |
| 2115 lc, mc, tc, l, c); | |
| 1623 | 2116 } |
| 2117 | |
| 2118 return retval; | |
| 2119 } | |
| 2120 | |
| 2121 // Build a try-catch command. | |
| 2122 | |
| 2123 static tree_command * | |
| 2124 make_try_command (token *try_tok, tree_statement_list *body, | |
| 3665 | 2125 tree_statement_list *cleanup, token *end_tok, |
| 2126 octave_comment_list *lc, octave_comment_list *mc) | |
| 1623 | 2127 { |
| 2128 tree_command *retval = 0; | |
| 2129 | |
| 2857 | 2130 if (end_token_ok (end_tok, token::try_catch_end)) |
| 1623 | 2131 { |
| 3665 | 2132 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2133 | |
| 1623 | 2134 int l = try_tok->line (); |
| 2135 int c = try_tok->column (); | |
| 2136 | |
| 3665 | 2137 retval = new tree_try_catch_command (body, cleanup, |
| 2138 lc, mc, tc, l, c); | |
| 1623 | 2139 } |
| 2140 | |
| 2141 return retval; | |
| 2142 } | |
| 2143 | |
| 2144 // Build a while command. | |
| 2145 | |
| 2146 static tree_command * | |
| 2147 make_while_command (token *while_tok, tree_expression *expr, | |
| 3665 | 2148 tree_statement_list *body, token *end_tok, |
| 2149 octave_comment_list *lc) | |
| 1623 | 2150 { |
| 2151 tree_command *retval = 0; | |
| 2152 | |
| 2153 maybe_warn_assign_as_truth_value (expr); | |
| 2154 | |
| 2857 | 2155 if (end_token_ok (end_tok, token::while_end)) |
| 1623 | 2156 { |
| 3665 | 2157 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2158 | |
| 1826 | 2159 lexer_flags.looping--; |
| 1623 | 2160 |
| 2161 int l = while_tok->line (); | |
| 2162 int c = while_tok->column (); | |
| 2163 | |
| 3665 | 2164 retval = new tree_while_command (expr, body, lc, tc, l, c); |
| 1623 | 2165 } |
| 2166 | |
| 2167 return retval; | |
| 2168 } | |
| 2169 | |
| 3484 | 2170 // Build a do-until command. |
| 2171 | |
| 2172 static tree_command * | |
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2173 make_do_until_command (token *until_tok, tree_statement_list *body, |
| 3665 | 2174 tree_expression *expr, octave_comment_list *lc) |
| 3484 | 2175 { |
| 2176 tree_command *retval = 0; | |
| 2177 | |
| 2178 maybe_warn_assign_as_truth_value (expr); | |
| 2179 | |
| 3665 | 2180 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2181 | |
| 3484 | 2182 lexer_flags.looping--; |
| 2183 | |
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2184 int l = until_tok->line (); |
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2185 int c = until_tok->column (); |
| 3484 | 2186 |
| 3665 | 2187 retval = new tree_do_until_command (expr, body, lc, tc, l, c); |
| 3484 | 2188 |
| 2189 return retval; | |
| 2190 } | |
| 2191 | |
| 1623 | 2192 // Build a for command. |
| 2193 | |
| 2194 static tree_command * | |
| 2970 | 2195 make_for_command (token *for_tok, tree_argument_list *lhs, |
| 1623 | 2196 tree_expression *expr, tree_statement_list *body, |
| 3665 | 2197 token *end_tok, octave_comment_list *lc) |
| 1623 | 2198 { |
| 2199 tree_command *retval = 0; | |
| 2200 | |
| 2857 | 2201 if (end_token_ok (end_tok, token::for_end)) |
| 1623 | 2202 { |
| 3665 | 2203 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2204 | |
| 1826 | 2205 lexer_flags.looping--; |
| 1623 | 2206 |
| 2207 int l = for_tok->line (); | |
| 2208 int c = for_tok->column (); | |
| 2209 | |
| 2970 | 2210 if (lhs->length () == 1) |
| 2211 { | |
| 2212 tree_expression *tmp = lhs->remove_front (); | |
| 2213 | |
| 3665 | 2214 retval = new tree_simple_for_command (tmp, expr, body, |
| 2215 lc, tc, l, c); | |
| 2970 | 2216 |
| 2217 delete lhs; | |
| 2218 } | |
| 2219 else | |
| 3665 | 2220 retval = new tree_complex_for_command (lhs, expr, body, |
| 2221 lc, tc, l, c); | |
| 1623 | 2222 } |
| 2223 | |
| 2224 return retval; | |
| 2225 } | |
| 2226 | |
| 4207 | 2227 // Build a break command. |
| 2228 | |
| 2229 static tree_command * | |
| 2230 make_break_command (token *break_tok) | |
| 1623 | 2231 { |
| 4207 | 2232 tree_command *retval = 0; |
| 1623 | 2233 |
| 2620 | 2234 int l = break_tok->line (); |
| 2235 int c = break_tok->column (); | |
| 2236 | |
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2237 // We check to see if we are evaluating a function, script, or loop |
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2238 // so that we don't turn eval ("break;") inside a function, script, |
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2239 // or loop into a no-op command. |
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2240 |
| 3489 | 2241 if (lexer_flags.looping || lexer_flags.defining_func |
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2242 || reading_script_file || tree_evaluator::in_fcn_or_script_body |
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2243 || tree_evaluator::in_loop_command) |
| 4207 | 2244 retval = new tree_break_command (l, c); |
| 1623 | 2245 else |
| 4207 | 2246 retval = new tree_no_op_command ("break", l, c); |
| 1623 | 2247 |
| 2248 return retval; | |
| 2249 } | |
| 2250 | |
| 4207 | 2251 // Build a continue command. |
| 2252 | |
| 2253 static tree_command * | |
| 2254 make_continue_command (token *continue_tok) | |
| 1623 | 2255 { |
| 4207 | 2256 tree_command *retval = 0; |
| 1623 | 2257 |
| 2620 | 2258 int l = continue_tok->line (); |
| 2259 int c = continue_tok->column (); | |
| 2260 | |
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2261 // We check to see if we are evaluating a loop so that we don't turn |
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2262 // eval ("continue;") into a no-op command inside a loop. |
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2263 |
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2264 if (lexer_flags.looping || tree_evaluator::in_loop_command) |
| 4207 | 2265 retval = new tree_continue_command (l, c); |
| 1623 | 2266 else |
| 4207 | 2267 retval = new tree_no_op_command ("continue", l, c); |
| 1623 | 2268 |
| 2269 return retval; | |
| 2270 } | |
| 2271 | |
| 4207 | 2272 // Build a return command. |
| 2273 | |
| 2274 static tree_command * | |
| 2275 make_return_command (token *return_tok) | |
| 1623 | 2276 { |
| 4207 | 2277 tree_command *retval = 0; |
| 1623 | 2278 |
| 2620 | 2279 int l = return_tok->line (); |
| 2280 int c = return_tok->column (); | |
| 2281 | |
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2282 if (Vdebugging) |
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2283 { |
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2284 Vdebugging = false; |
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2285 |
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|
2286 retval = new tree_no_op_command ("return", l, c); |
|
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|
2287 } |
| 1623 | 2288 else |
|
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|
2289 { |
|
8669
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|
2290 // We check to see if we are evaluating a function or script so |
|
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|
2291 // that we don't turn eval ("return;") inside a function, script, |
|
33783e94fb16
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|
2292 // or loop into a no-op command. |
|
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|
2293 |
|
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|
2294 if (lexer_flags.defining_func || reading_script_file |
|
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|
2295 || tree_evaluator::in_fcn_or_script_body) |
|
7787
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|
2296 retval = new tree_return_command (l, c); |
|
6b521b1e3631
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|
2297 else |
|
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|
2298 retval = new tree_no_op_command ("return", l, c); |
|
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|
2299 } |
| 1623 | 2300 |
| 2301 return retval; | |
| 2302 } | |
| 2303 | |
| 2304 // Start an if command. | |
| 2305 | |
| 2306 static tree_if_command_list * | |
| 2307 start_if_command (tree_expression *expr, tree_statement_list *list) | |
| 2308 { | |
| 2309 maybe_warn_assign_as_truth_value (expr); | |
| 2310 | |
| 2311 tree_if_clause *t = new tree_if_clause (expr, list); | |
| 2312 | |
| 2313 return new tree_if_command_list (t); | |
| 2314 } | |
| 2315 | |
| 2316 // Finish an if command. | |
| 2317 | |
| 2318 static tree_if_command * | |
| 2319 finish_if_command (token *if_tok, tree_if_command_list *list, | |
| 3665 | 2320 token *end_tok, octave_comment_list *lc) |
| 1623 | 2321 { |
| 2322 tree_if_command *retval = 0; | |
| 2323 | |
| 2857 | 2324 if (end_token_ok (end_tok, token::if_end)) |
| 1623 | 2325 { |
| 3665 | 2326 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2327 | |
| 1623 | 2328 int l = if_tok->line (); |
| 2329 int c = if_tok->column (); | |
| 2330 | |
|
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|
2331 if (list && ! list->empty ()) |
|
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|
2332 { |
|
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|
2333 tree_if_clause *elt = list->front (); |
|
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|
2334 |
|
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|
2335 if (elt) |
|
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|
2336 { |
|
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|
2337 elt->line (l); |
|
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|
2338 elt->column (c); |
|
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|
2339 } |
|
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|
2340 } |
|
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|
2341 |
| 3665 | 2342 retval = new tree_if_command (list, lc, tc, l, c); |
| 1623 | 2343 } |
| 2344 | |
| 2345 return retval; | |
| 2346 } | |
| 2347 | |
| 2348 // Build an elseif clause. | |
| 2349 | |
| 2350 static tree_if_clause * | |
|
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|
2351 make_elseif_clause (token *elseif_tok, tree_expression *expr, |
|
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New evaluator and debugger derived from tree-walker class
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changeset
|
2352 tree_statement_list *list, octave_comment_list *lc) |
| 1623 | 2353 { |
| 2354 maybe_warn_assign_as_truth_value (expr); | |
| 2355 | |
|
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New evaluator and debugger derived from tree-walker class
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|
2356 int l = elseif_tok->line (); |
|
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diff
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|
2357 int c = elseif_tok->column (); |
|
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diff
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|
2358 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
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diff
changeset
|
2359 return new tree_if_clause (expr, list, lc, l, c); |
| 1623 | 2360 } |
| 2361 | |
| 2764 | 2362 // Finish a switch command. |
| 2363 | |
| 2364 static tree_switch_command * | |
| 2365 finish_switch_command (token *switch_tok, tree_expression *expr, | |
| 3665 | 2366 tree_switch_case_list *list, token *end_tok, |
| 2367 octave_comment_list *lc) | |
| 2764 | 2368 { |
| 2369 tree_switch_command *retval = 0; | |
| 2370 | |
| 2857 | 2371 if (end_token_ok (end_tok, token::switch_end)) |
| 2764 | 2372 { |
| 3665 | 2373 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2374 | |
| 2764 | 2375 int l = switch_tok->line (); |
| 2376 int c = switch_tok->column (); | |
| 2377 | |
|
8842
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|
2378 if (list && ! list->empty ()) |
|
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|
2379 { |
|
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changeset
|
2380 tree_switch_case *elt = list->front (); |
|
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changeset
|
2381 |
|
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changeset
|
2382 if (elt) |
|
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changeset
|
2383 { |
|
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changeset
|
2384 elt->line (l); |
|
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|
2385 elt->column (c); |
|
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changeset
|
2386 } |
|
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changeset
|
2387 } |
|
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changeset
|
2388 |
| 3665 | 2389 retval = new tree_switch_command (expr, list, lc, tc, l, c); |
| 2764 | 2390 } |
| 2391 | |
| 2392 return retval; | |
| 2393 } | |
| 2394 | |
| 2395 // Build a switch case. | |
| 2396 | |
| 2397 static tree_switch_case * | |
|
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73c4516fae10
New evaluator and debugger derived from tree-walker class
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diff
changeset
|
2398 make_switch_case (token *case_tok, tree_expression *expr, |
|
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New evaluator and debugger derived from tree-walker class
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diff
changeset
|
2399 tree_statement_list *list, octave_comment_list *lc) |
| 2764 | 2400 { |
| 2401 maybe_warn_variable_switch_label (expr); | |
| 2402 | |
|
8658
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New evaluator and debugger derived from tree-walker class
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diff
changeset
|
2403 int l = case_tok->line (); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
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diff
changeset
|
2404 int c = case_tok->column (); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
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diff
changeset
|
2405 |
|
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diff
changeset
|
2406 return new tree_switch_case (expr, list, lc, l, c); |
| 2764 | 2407 } |
| 2408 | |
| 1623 | 2409 // Build an assignment to a variable. |
| 2410 | |
| 2411 static tree_expression * | |
| 2970 | 2412 make_assign_op (int op, tree_argument_list *lhs, token *eq_tok, |
| 2413 tree_expression *rhs) | |
| 1623 | 2414 { |
| 2970 | 2415 tree_expression *retval = 0; |
| 2416 | |
| 2883 | 2417 octave_value::assign_op t = octave_value::unknown_assign_op; |
| 2418 | |
| 2419 switch (op) | |
| 2420 { | |
| 2421 case '=': | |
| 3525 | 2422 t = octave_value::op_asn_eq; |
| 2883 | 2423 break; |
| 2424 | |
| 2425 case ADD_EQ: | |
| 3525 | 2426 t = octave_value::op_add_eq; |
| 2883 | 2427 break; |
| 2428 | |
| 2429 case SUB_EQ: | |
| 3525 | 2430 t = octave_value::op_sub_eq; |
| 2883 | 2431 break; |
| 2432 | |
| 2433 case MUL_EQ: | |
| 3525 | 2434 t = octave_value::op_mul_eq; |
| 2883 | 2435 break; |
| 2436 | |
| 2437 case DIV_EQ: | |
| 3525 | 2438 t = octave_value::op_div_eq; |
| 2883 | 2439 break; |
| 2440 | |
| 3204 | 2441 case LEFTDIV_EQ: |
| 3525 | 2442 t = octave_value::op_ldiv_eq; |
| 3204 | 2443 break; |
| 2444 | |
| 4018 | 2445 case POW_EQ: |
| 2446 t = octave_value::op_pow_eq; | |
| 2447 break; | |
| 2448 | |
| 2899 | 2449 case LSHIFT_EQ: |
| 3525 | 2450 t = octave_value::op_lshift_eq; |
| 2899 | 2451 break; |
| 2452 | |
| 2453 case RSHIFT_EQ: | |
| 3525 | 2454 t = octave_value::op_rshift_eq; |
| 2899 | 2455 break; |
| 2456 | |
| 2883 | 2457 case EMUL_EQ: |
| 3525 | 2458 t = octave_value::op_el_mul_eq; |
| 2883 | 2459 break; |
| 2460 | |
| 2461 case EDIV_EQ: | |
| 3525 | 2462 t = octave_value::op_el_div_eq; |
| 2883 | 2463 break; |
| 2464 | |
| 3204 | 2465 case ELEFTDIV_EQ: |
| 3525 | 2466 t = octave_value::op_el_ldiv_eq; |
| 3204 | 2467 break; |
| 2468 | |
| 4018 | 2469 case EPOW_EQ: |
| 2470 t = octave_value::op_el_pow_eq; | |
| 2471 break; | |
| 2472 | |
| 2883 | 2473 case AND_EQ: |
| 3525 | 2474 t = octave_value::op_el_and_eq; |
| 2883 | 2475 break; |
| 2476 | |
| 2477 case OR_EQ: | |
| 3525 | 2478 t = octave_value::op_el_or_eq; |
| 2883 | 2479 break; |
| 2480 | |
| 2481 default: | |
| 2482 panic_impossible (); | |
| 2483 break; | |
| 2484 } | |
| 2485 | |
| 1623 | 2486 int l = eq_tok->line (); |
| 2487 int c = eq_tok->column (); | |
| 2488 | |
| 5841 | 2489 if (lhs->is_simple_assign_lhs ()) |
| 666 | 2490 { |
| 2970 | 2491 tree_expression *tmp = lhs->remove_front (); |
| 2492 | |
| 2493 retval = new tree_simple_assignment (tmp, rhs, false, l, c, t); | |
| 2494 | |
| 2495 delete lhs; | |
| 666 | 2496 } |
| 2497 else | |
| 3208 | 2498 return new tree_multi_assignment (lhs, rhs, false, l, c, t); |
| 666 | 2499 |
| 2500 return retval; | |
| 2501 } | |
| 751 | 2502 |
|
7715
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diff
changeset
|
2503 // Define a function. |
|
5b4d278ec828
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diff
changeset
|
2504 |
|
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diff
changeset
|
2505 static void |
|
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diff
changeset
|
2506 make_script (tree_statement_list *cmds, tree_statement *end_script) |
|
7715
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diff
changeset
|
2507 { |
|
5b4d278ec828
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diff
changeset
|
2508 std::string doc_string; |
|
5b4d278ec828
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diff
changeset
|
2509 |
|
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diff
changeset
|
2510 if (! help_buf.empty ()) |
|
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diff
changeset
|
2511 { |
|
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diff
changeset
|
2512 doc_string = help_buf.top (); |
|
5b4d278ec828
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diff
changeset
|
2513 help_buf.pop (); |
|
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diff
changeset
|
2514 } |
|
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diff
changeset
|
2515 |
|
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diff
changeset
|
2516 if (! cmds) |
|
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diff
changeset
|
2517 cmds = new tree_statement_list (); |
|
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diff
changeset
|
2518 |
|
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diff
changeset
|
2519 cmds->append (end_script); |
|
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diff
changeset
|
2520 |
|
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|
2521 octave_user_script *script |
|
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parse scripts completely before executing
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diff
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|
2522 = new octave_user_script (curr_fcn_file_full_name, curr_fcn_file_name, |
|
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|
2523 cmds, doc_string); |
|
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|
2524 |
|
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|
2525 octave_time now; |
|
5b4d278ec828
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changeset
|
2526 |
|
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|
2527 script->stash_fcn_file_time (now); |
|
5b4d278ec828
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|
2528 |
|
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|
2529 curr_fcn_ptr = script; |
|
8881
8ed42c679af5
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|
2530 |
|
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|
2531 symbol_table::clear_forced_variables (); |
|
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|
2532 } |
|
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|
2533 |
| 1623 | 2534 // Begin defining a function. |
| 2535 | |
| 2891 | 2536 static octave_user_function * |
|
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|
2537 start_function (tree_parameter_list *param_list, tree_statement_list *body, |
|
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|
2538 tree_statement *end_fcn_stmt) |
| 1623 | 2539 { |
| 2891 | 2540 // We'll fill in the return list later. |
| 2541 | |
|
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|
2542 if (! body) |
|
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changeset
|
2543 body = new tree_statement_list (); |
|
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|
2544 |
|
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|
2545 body->append (end_fcn_stmt); |
|
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diff
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|
2546 |
| 2891 | 2547 octave_user_function *fcn |
| 7336 | 2548 = new octave_user_function (symbol_table::current_scope (), |
| 2549 param_list, 0, body); | |
| 1623 | 2550 |
| 3665 | 2551 if (fcn) |
| 2552 { | |
| 2553 octave_comment_list *tc = octave_comment_buffer::get_comment (); | |
| 2554 | |
| 2555 fcn->stash_trailing_comment (tc); | |
| 2556 } | |
| 2557 | |
| 1623 | 2558 return fcn; |
| 2559 } | |
| 2560 | |
|
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|
2561 static tree_statement * |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
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|
2562 make_end (const std::string& type, int l, int c) |
|
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New evaluator and debugger derived from tree-walker class
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|
2563 { |
|
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New evaluator and debugger derived from tree-walker class
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|
2564 return make_statement (new tree_no_op_command (type, l, c)); |
|
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New evaluator and debugger derived from tree-walker class
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|
2565 } |
|
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New evaluator and debugger derived from tree-walker class
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|
2566 |
| 1623 | 2567 // Do most of the work for defining a function. |
| 2568 | |
| 2891 | 2569 static octave_user_function * |
| 4872 | 2570 frob_function (const std::string& fname, octave_user_function *fcn) |
| 1623 | 2571 { |
| 4872 | 2572 std::string id_name = fname; |
| 1623 | 2573 |
| 2574 // If input is coming from a file, issue a warning if the name of | |
| 2575 // the file does not match the name of the function stated in the | |
| 2576 // file. Matlab doesn't provide a diagnostic (it ignores the stated | |
| 2577 // name). | |
| 2578 | |
| 5484 | 2579 if (reading_fcn_file || autoloading) |
| 1623 | 2580 { |
| 7336 | 2581 if (! (autoloading |
| 2582 || lexer_flags.parsing_nested_function | |
| 2583 || lexer_flags.parsing_class_method)) | |
| 1623 | 2584 { |
| 7336 | 2585 // FIXME -- should curr_fcn_file_name already be |
| 2586 // preprocessed when we get here? It seems to only be a | |
| 2587 // problem with relative file names. | |
| 2588 | |
| 2589 std::string nm = curr_fcn_file_name; | |
| 2590 | |
|
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2591 size_t pos = nm.find_last_of (file_ops::dir_sep_chars ()); |
| 7336 | 2592 |
| 8021 | 2593 if (pos != std::string::npos) |
| 7336 | 2594 nm = curr_fcn_file_name.substr (pos+1); |
| 2595 | |
| 2596 if (nm != id_name) | |
| 2597 { | |
| 2598 warning_with_id | |
| 2599 ("Octave:function-name-clash", | |
| 2600 "function name `%s' does not agree with function file name `%s'", | |
| 2601 id_name.c_str (), curr_fcn_file_full_name.c_str ()); | |
| 2602 | |
| 2603 id_name = nm; | |
| 2604 } | |
| 1623 | 2605 } |
| 2606 | |
| 3712 | 2607 octave_time now; |
| 3162 | 2608 |
| 4343 | 2609 fcn->stash_fcn_file_name (curr_fcn_file_full_name); |
| 3162 | 2610 fcn->stash_fcn_file_time (now); |
| 1623 | 2611 fcn->mark_as_system_fcn_file (); |
| 3162 | 2612 |
| 6323 | 2613 if (fcn_file_from_relative_lookup) |
| 2614 fcn->mark_relative (); | |
| 2615 | |
| 2616 if (lexer_flags.parsing_nested_function) | |
|
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2617 { |
|
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2618 fcn->stash_parent_fcn_name (parent_function_name); |
|
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2619 fcn->stash_parent_fcn_scope (symbol_table::parent_scope ()); |
|
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|
2620 } |
| 6323 | 2621 |
| 7336 | 2622 if (lexer_flags.parsing_class_method) |
| 2623 { | |
| 2624 if (current_class_name == id_name) | |
| 2625 fcn->mark_as_class_constructor (); | |
| 2626 else | |
| 2627 fcn->mark_as_class_method (); | |
| 2628 | |
| 2629 fcn->stash_dispatch_class (current_class_name); | |
| 2630 } | |
| 2631 | |
| 5781 | 2632 std::string nm = fcn->fcn_file_name (); |
| 2633 | |
| 2634 file_stat fs (nm); | |
| 2635 | |
| 2636 if (fs && fs.is_newer (now)) | |
| 2637 warning_with_id ("Octave:future-time-stamp", | |
| 2638 "time stamp for `%s' is in the future", nm.c_str ()); | |
| 1623 | 2639 } |
| 2640 else if (! (input_from_tmp_history_file || input_from_startup_file) | |
| 2641 && reading_script_file | |
| 1755 | 2642 && curr_fcn_file_name == id_name) |
| 1623 | 2643 { |
| 2644 warning ("function `%s' defined within script file `%s'", | |
| 1755 | 2645 id_name.c_str (), curr_fcn_file_full_name.c_str ()); |
| 1623 | 2646 } |
| 2647 | |
| 4872 | 2648 fcn->stash_function_name (id_name); |
| 2649 | |
| 7336 | 2650 if (! help_buf.empty ()) |
| 2651 { | |
| 2652 fcn->document (help_buf.top ()); | |
| 2653 | |
| 2654 help_buf.pop (); | |
| 2655 } | |
| 2656 | |
|
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2657 if (reading_fcn_file && ! lexer_flags.parsing_nested_function) |
|
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|
2658 curr_fcn_ptr = fcn; |
| 7336 | 2659 else |
|
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|
2660 curr_fcn_ptr = 0; |
| 4426 | 2661 |
| 1623 | 2662 return fcn; |
| 2663 } | |
| 2664 | |
|
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|
2665 static tree_function_def * |
| 3665 | 2666 finish_function (tree_parameter_list *ret_list, |
| 2667 octave_user_function *fcn, octave_comment_list *lc) | |
| 1623 | 2668 { |
|
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2669 tree_function_def *retval = 0; |
|
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2670 |
|
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|
2671 if (ret_list) |
|
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|
2672 ret_list->mark_as_formal_parameters (); |
|
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2673 |
|
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|
2674 if (fcn) |
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2675 { |
|
7761
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symbol table reporting functions
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|
2676 std::string nm = fcn->name (); |
|
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2677 std::string file = fcn->fcn_file_name (); |
|
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2678 |
|
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|
2679 std::string tmp = nm; |
|
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2680 if (! file.empty ()) |
|
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|
2681 tmp += ": " + file; |
|
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|
2682 |
|
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|
2683 symbol_table::cache_name (fcn->scope (), tmp); |
|
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|
2684 |
|
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|
2685 if (lc) |
|
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2686 fcn->stash_leading_comment (lc); |
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2687 |
|
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|
2688 fcn->define_ret_list (ret_list); |
|
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2689 |
|
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|
2690 if (lexer_flags.parsing_nested_function) |
|
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2691 { |
|
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|
2692 fcn->mark_as_nested_function (); |
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2693 |
|
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|
2694 symbol_table::install_subfunction (nm, octave_value (fcn)); |
|
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2695 |
|
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|
2696 if (lexer_flags.parsing_nested_function < 0) |
|
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|
2697 { |
|
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|
2698 lexer_flags.parsing_nested_function = 0; |
|
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|
2699 symbol_table::reset_parent_scope (); |
|
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|
2700 } |
|
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|
2701 } |
|
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|
2702 else if (! curr_fcn_ptr) |
|
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2703 { |
|
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|
2704 // FIXME -- there should be a better way to indicate that we |
|
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|
2705 // should create a tree_function_def object other than |
|
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|
2706 // looking at curr_fcn_ptr... |
|
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|
2707 |
|
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|
2708 retval = new tree_function_def (fcn); |
|
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|
2709 } |
|
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2710 |
| 8283 | 2711 // Clear any local variables that may have been added while |
| 2712 // parsing (for example, by force_local_variable in lex.l). | |
|
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2713 |
|
8881
8ed42c679af5
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2714 symbol_table::clear_forced_variables (fcn->scope ()); |
|
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2715 } |
|
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2716 |
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2717 return retval; |
| 1623 | 2718 } |
| 2719 | |
| 2883 | 2720 static void |
| 2721 recover_from_parsing_function (void) | |
| 2722 { | |
| 4238 | 2723 if (symtab_context.empty ()) |
| 3903 | 2724 panic_impossible (); |
| 2725 | |
| 7336 | 2726 symbol_table::set_scope (symtab_context.top ()); |
| 4238 | 2727 symtab_context.pop (); |
| 2883 | 2728 |
| 2729 lexer_flags.defining_func = false; | |
| 2730 lexer_flags.parsed_function_name = false; | |
| 2731 lexer_flags.looking_at_return_list = false; | |
| 2732 lexer_flags.looking_at_parameter_list = false; | |
| 2733 } | |
| 2734 | |
| 2846 | 2735 // Make an index expression. |
| 2736 | |
| 751 | 2737 static tree_index_expression * |
| 3929 | 2738 make_index_expression (tree_expression *expr, tree_argument_list *args, |
| 3933 | 2739 char type) |
| 751 | 2740 { |
| 2741 tree_index_expression *retval = 0; | |
| 2742 | |
| 2970 | 2743 int l = expr->line (); |
| 2744 int c = expr->column (); | |
| 2745 | |
| 2746 expr->mark_postfix_indexed (); | |
| 2747 | |
| 3933 | 2748 if (expr->is_index_expression ()) |
| 2749 { | |
| 2750 tree_index_expression *tmp = static_cast<tree_index_expression *> (expr); | |
| 2751 | |
| 2752 tmp->append (args, type); | |
| 2753 | |
| 2754 retval = tmp; | |
| 2755 } | |
| 2756 else | |
| 2757 retval = new tree_index_expression (expr, args, l, c, type); | |
| 2970 | 2758 |
| 2759 return retval; | |
| 2760 } | |
| 2761 | |
| 2762 // Make an indirect reference expression. | |
| 2763 | |
| 3930 | 2764 static tree_index_expression * |
| 3523 | 2765 make_indirect_ref (tree_expression *expr, const std::string& elt) |
| 2970 | 2766 { |
| 3930 | 2767 tree_index_expression *retval = 0; |
| 2970 | 2768 |
| 2769 int l = expr->line (); | |
| 2770 int c = expr->column (); | |
| 2771 | |
| 3933 | 2772 if (expr->is_index_expression ()) |
| 2773 { | |
| 2774 tree_index_expression *tmp = static_cast<tree_index_expression *> (expr); | |
| 2775 | |
| 2776 tmp->append (elt); | |
| 2777 | |
| 2778 retval = tmp; | |
| 2779 } | |
| 2780 else | |
| 2781 retval = new tree_index_expression (expr, elt, l, c); | |
| 2970 | 2782 |
| 2783 lexer_flags.looking_at_indirect_ref = false; | |
| 751 | 2784 |
| 2785 return retval; | |
| 2786 } | |
| 1511 | 2787 |
| 4131 | 2788 // Make an indirect reference expression with dynamic field name. |
| 2789 | |
| 2790 static tree_index_expression * | |
| 2791 make_indirect_ref (tree_expression *expr, tree_expression *elt) | |
| 2792 { | |
| 2793 tree_index_expression *retval = 0; | |
| 2794 | |
| 2795 int l = expr->line (); | |
| 2796 int c = expr->column (); | |
| 2797 | |
| 2798 if (expr->is_index_expression ()) | |
| 2799 { | |
| 2800 tree_index_expression *tmp = static_cast<tree_index_expression *> (expr); | |
| 2801 | |
| 2802 tmp->append (elt); | |
| 2803 | |
| 2804 retval = tmp; | |
| 2805 } | |
| 2806 else | |
| 2807 retval = new tree_index_expression (expr, elt, l, c); | |
| 2808 | |
| 2809 lexer_flags.looking_at_indirect_ref = false; | |
| 2810 | |
| 2811 return retval; | |
| 2812 } | |
| 2813 | |
| 2846 | 2814 // Make a declaration command. |
| 2815 | |
| 2816 static tree_decl_command * | |
| 2817 make_decl_command (int tok, token *tok_val, tree_decl_init_list *lst) | |
| 2818 { | |
| 2819 tree_decl_command *retval = 0; | |
| 2820 | |
| 2821 int l = tok_val->line (); | |
| 2822 int c = tok_val->column (); | |
| 2823 | |
| 2824 switch (tok) | |
| 2825 { | |
| 2826 case GLOBAL: | |
| 2827 retval = new tree_global_command (lst, l, c); | |
| 2828 break; | |
| 2829 | |
| 2830 case STATIC: | |
| 2831 if (lexer_flags.defining_func) | |
| 2832 retval = new tree_static_command (lst, l, c); | |
| 2833 else | |
| 2834 { | |
| 2835 if (reading_script_file) | |
| 4844 | 2836 warning ("ignoring persistent declaration near line %d of file `%s'", |
| 2846 | 2837 l, curr_fcn_file_full_name.c_str ()); |
| 2838 else | |
| 4844 | 2839 warning ("ignoring persistent declaration near line %d", l); |
| 2846 | 2840 } |
| 2841 break; | |
| 2842 | |
| 2843 default: | |
| 2844 panic_impossible (); | |
| 2845 break; | |
| 2846 } | |
| 2847 | |
| 2848 return retval; | |
| 2849 } | |
| 2850 | |
| 1623 | 2851 // Finish building a matrix list. |
| 2852 | |
| 2853 static tree_expression * | |
| 1829 | 2854 finish_matrix (tree_matrix *m) |
| 1623 | 2855 { |
| 3110 | 2856 tree_expression *retval = m; |
| 2857 | |
| 2858 unwind_protect::begin_frame ("finish_matrix"); | |
| 2859 | |
| 2860 unwind_protect_int (error_state); | |
| 4452 | 2861 unwind_protect_int (warning_state); |
| 3110 | 2862 |
| 3815 | 2863 unwind_protect_bool (discard_error_messages); |
| 4452 | 2864 unwind_protect_bool (discard_warning_messages); |
| 2865 | |
| 3815 | 2866 discard_error_messages = true; |
| 4452 | 2867 discard_warning_messages = true; |
| 1623 | 2868 |
| 2533 | 2869 if (m->all_elements_are_constant ()) |
| 1829 | 2870 { |
|
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73c4516fae10
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John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
2871 octave_value tmp = m->rvalue1 (); |
| 1623 | 2872 |
| 3489 | 2873 if (! (error_state || warning_state)) |
| 2533 | 2874 { |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
2875 tree_constant *tc_retval |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
2876 = new tree_constant (tmp, m->line (), m->column ()); |
| 2533 | 2877 |
| 5765 | 2878 std::ostringstream buf; |
| 2533 | 2879 |
| 2880 tree_print_code tpc (buf); | |
| 2881 | |
| 2882 m->accept (tpc); | |
| 2883 | |
| 5765 | 2884 tc_retval->stash_original_text (buf.str ()); |
| 2533 | 2885 |
| 2886 delete m; | |
| 2887 | |
| 2888 retval = tc_retval; | |
| 2889 } | |
| 1623 | 2890 } |
| 3110 | 2891 |
| 2892 unwind_protect::run_frame ("finish_matrix"); | |
| 1623 | 2893 |
| 2894 return retval; | |
| 2895 } | |
| 2896 | |
| 3351 | 2897 // Finish building a cell list. |
| 2898 | |
| 2899 static tree_expression * | |
| 2900 finish_cell (tree_cell *c) | |
| 2901 { | |
| 5875 | 2902 return finish_matrix (c); |
| 3351 | 2903 } |
| 2904 | |
| 1511 | 2905 static void |
| 2906 maybe_warn_missing_semi (tree_statement_list *t) | |
| 2907 { | |
| 5781 | 2908 if (lexer_flags.defining_func) |
| 1511 | 2909 { |
| 4219 | 2910 tree_statement *tmp = t->back(); |
| 1607 | 2911 |
| 1511 | 2912 if (tmp->is_expression ()) |
| 5781 | 2913 warning_with_id |
| 2914 ("Octave:missing-semicolon", | |
| 2915 "missing semicolon near line %d, column %d in file `%s'", | |
| 2916 tmp->line (), tmp->column (), curr_fcn_file_full_name.c_str ()); | |
| 1511 | 2917 } |
| 2918 } | |
| 1994 | 2919 |
|
8471
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
8448
diff
changeset
|
2920 static tree_statement_list * |
| 2525 | 2921 set_stmt_print_flag (tree_statement_list *list, char sep, |
| 2922 bool warn_missing_semi) | |
| 2923 { | |
|
8471
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
8448
diff
changeset
|
2924 tree_statement *tmp = list->back (); |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
8448
diff
changeset
|
2925 |
| 2525 | 2926 switch (sep) |
| 2927 { | |
| 2928 case ';': | |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
2929 tmp->set_print_flag (false); |
| 2525 | 2930 break; |
| 2931 | |
| 2932 case 0: | |
| 2933 case ',': | |
| 2934 case '\n': | |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
2935 tmp->set_print_flag (true); |
| 2525 | 2936 if (warn_missing_semi) |
| 2937 maybe_warn_missing_semi (list); | |
| 2938 break; | |
| 2939 | |
| 2940 default: | |
| 2941 warning ("unrecognized separator type!"); | |
| 2942 break; | |
| 2943 } | |
|
8471
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
2944 |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2945 // Even if a statement is null, we add it to the list then remove it |
|
02de6775f1fe
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John W. Eaton <jwe@octave.org>
parents:
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diff
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|
2946 // here so that the print flag is applied to the correct statement. |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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|
2947 |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2948 if (tmp->is_null_statement ()) |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2949 { |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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diff
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|
2950 list->pop_back (); |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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|
2951 delete tmp; |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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|
2952 } |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2953 |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2954 return list; |
| 2525 | 2955 } |
| 2956 | |
|
8448
d6c0d5f208de
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John W. Eaton <jwe@octave.org>
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changeset
|
2957 static tree_statement_list * |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
8447
diff
changeset
|
2958 make_statement_list (tree_statement *stmt) |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
8447
diff
changeset
|
2959 { |
|
8471
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
8448
diff
changeset
|
2960 return new tree_statement_list (stmt); |
|
8448
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John W. Eaton <jwe@octave.org>
parents:
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|
2961 } |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
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|
2962 |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2963 static tree_statement_list * |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
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diff
changeset
|
2964 append_statement_list (tree_statement_list *list, char sep, |
|
d6c0d5f208de
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John W. Eaton <jwe@octave.org>
parents:
8447
diff
changeset
|
2965 tree_statement *stmt, bool warn_missing_semi) |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
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|
2966 { |
|
8471
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
8448
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changeset
|
2967 set_stmt_print_flag (list, sep, warn_missing_semi); |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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changeset
|
2968 |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2969 list->append (stmt); |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
2970 |
|
02de6775f1fe
parse.y: always append statements to list, but remove null statements after seeing separator
John W. Eaton <jwe@octave.org>
parents:
8448
diff
changeset
|
2971 return list; |
|
8448
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
8447
diff
changeset
|
2972 } |
|
d6c0d5f208de
parse.y: avoid storing null statements in statement lists
John W. Eaton <jwe@octave.org>
parents:
8447
diff
changeset
|
2973 |
| 3021 | 2974 static void |
| 2975 safe_fclose (void *f) | |
| 2976 { | |
| 5775 | 2977 // FIXME -- comments at the end of an input file are |
| 3765 | 2978 // discarded (otherwise, they would be appended to the next |
| 2979 // statement, possibly from the command line or another file, which | |
| 2980 // can be quite confusing). | |
| 2981 | |
| 5308 | 2982 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2983 | |
| 2984 delete tc; | |
| 3765 | 2985 |
| 3021 | 2986 if (f) |
| 2987 fclose (static_cast<FILE *> (f)); | |
| 2988 } | |
| 2989 | |
| 2990 static bool | |
| 5175 | 2991 looks_like_copyright (const std::string& s) |
| 3021 | 2992 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2993 bool retval = false; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
2994 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2995 if (! s.empty ()) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2996 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2997 size_t offset = s.find_first_not_of (" \t"); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
2998 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2999 retval = (s.substr (offset, 9) == "Copyright"); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
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|
3000 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3001 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3002 return retval; |
| 3021 | 3003 } |
| 3004 | |
| 4540 | 3005 static int |
| 3006 text_getc (FILE *f) | |
| 3007 { | |
| 3008 int c = getc (f); | |
| 3009 | |
|
7728
13820b9f5fd9
more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents:
7723
diff
changeset
|
3010 // Convert CRLF into just LF and single CR into LF. |
| 4540 | 3011 |
| 3012 if (c == '\r') | |
| 3013 { | |
| 3014 c = getc (f); | |
| 3015 | |
|
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3016 if (c != '\n') |
| 4540 | 3017 { |
| 3018 ungetc (c, f); | |
|
7728
13820b9f5fd9
more consistent handling of CR/CRLF/LF line endings in lexer and parser
John W. Eaton <jwe@octave.org>
parents:
7723
diff
changeset
|
3019 c = '\n'; |
| 4540 | 3020 } |
| 3021 } | |
|
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3022 |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3023 if (c == '\n') |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3024 input_line_number++; |
| 4540 | 3025 |
| 3026 return c; | |
| 3027 } | |
| 3028 | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3029 class |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3030 stdio_stream_reader : public stream_reader |
| 3021 | 3031 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3032 public: |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3033 stdio_stream_reader (FILE *f_arg) : stream_reader (), f (f_arg) { } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3034 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3035 int getc (void) { return ::text_getc (f); } |
|
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3036 int ungetc (int c) |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3037 { |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3038 if (c == '\n') |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3039 input_line_number--; |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3040 |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3041 return ::ungetc (c, f); |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3042 } |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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changeset
|
3043 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3044 private: |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3045 FILE *f; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3046 }; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3047 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3048 static bool |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3049 skip_white_space (stream_reader& reader) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3050 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3051 int c = 0; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3052 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3053 while ((c = reader.getc ()) != EOF) |
| 3021 | 3054 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3055 switch (c) |
| 3021 | 3056 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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7719
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changeset
|
3057 case ' ': |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3058 case '\t': |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3059 current_input_column++; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
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changeset
|
3060 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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7719
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changeset
|
3061 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3062 case '\n': |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3063 current_input_column = 0; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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7719
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changeset
|
3064 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
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changeset
|
3065 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
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7719
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changeset
|
3066 default: |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
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changeset
|
3067 current_input_column--; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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7719
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changeset
|
3068 reader.ungetc (c); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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7719
diff
changeset
|
3069 goto done; |
| 3021 | 3070 } |
| 3071 } | |
| 3072 | |
| 3073 done: | |
| 3074 | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
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7719
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changeset
|
3075 return (c == EOF); |
| 3021 | 3076 } |
| 3077 | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3078 static std::string |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3079 gobble_leading_white_space (FILE *ffile, bool& eof) |
| 3021 | 3080 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3081 std::string help_txt; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3082 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3083 eof = false; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3084 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3085 // TRUE means we have already cached the help text. |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3086 bool have_help_text = false; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3087 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3088 std::string txt; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3089 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3090 stdio_stream_reader stdio_reader (ffile); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3091 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3092 while (true) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3093 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3094 eof = skip_white_space (stdio_reader); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3095 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3096 if (eof) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3097 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3098 |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3099 txt = grab_comment_block (stdio_reader, true, eof); |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3100 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3101 if (txt.empty ()) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3102 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3103 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3104 if (! (have_help_text || looks_like_copyright (txt))) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3105 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3106 help_txt = txt; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3107 have_help_text = true; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3108 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3109 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3110 octave_comment_buffer::append (txt); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3111 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3112 if (eof) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3113 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3114 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3115 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3116 return help_txt; |
| 3021 | 3117 } |
| 3118 | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3119 static bool |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3120 looking_at_function_keyword (FILE *ffile) |
| 5931 | 3121 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3122 bool status = false; |
| 3021 | 3123 |
| 3124 long pos = ftell (ffile); | |
| 3125 | |
| 3126 char buf [10]; | |
| 3127 fgets (buf, 10, ffile); | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3128 size_t len = strlen (buf); |
| 3021 | 3129 if (len > 8 && strncmp (buf, "function", 8) == 0 |
| 3130 && ! (isalnum (buf[8]) || buf[8] == '_')) | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3131 status = true; |
| 3021 | 3132 |
| 3133 fseek (ffile, pos, SEEK_SET); | |
| 3134 | |
| 3135 return status; | |
| 3136 } | |
| 3137 | |
| 3138 static void | |
| 3139 restore_command_history (void *) | |
| 3140 { | |
| 3141 command_history::ignore_entries (! Vsaving_history); | |
| 3142 } | |
| 3143 | |
| 3144 static void | |
| 3145 restore_input_stream (void *f) | |
| 3146 { | |
| 3147 command_editor::set_input_stream (static_cast<FILE *> (f)); | |
| 3148 } | |
| 3149 | |
| 7336 | 3150 static octave_function * |
| 3151 parse_fcn_file (const std::string& ff, const std::string& dispatch_type, | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3152 bool force_script = false, bool require_file = true, |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3153 const std::string& warn_for = std::string ()) |
| 3021 | 3154 { |
| 3155 unwind_protect::begin_frame ("parse_fcn_file"); | |
| 3156 | |
| 7336 | 3157 octave_function *fcn_ptr = 0; |
| 3021 | 3158 |
| 3159 // Open function file and parse. | |
| 3160 | |
| 3161 bool old_reading_fcn_file_state = reading_fcn_file; | |
| 3162 | |
| 3163 FILE *in_stream = command_editor::get_input_stream (); | |
| 3164 | |
| 3165 unwind_protect::add (restore_input_stream, in_stream); | |
| 3166 | |
| 3167 unwind_protect_ptr (ff_instream); | |
| 3168 | |
| 3169 unwind_protect_int (input_line_number); | |
| 3170 unwind_protect_int (current_input_column); | |
| 4238 | 3171 unwind_protect_int (end_tokens_expected); |
| 3021 | 3172 unwind_protect_bool (reading_fcn_file); |
| 3173 unwind_protect_bool (line_editing); | |
| 4238 | 3174 unwind_protect_str (parent_function_name); |
| 7336 | 3175 unwind_protect_str (current_class_name); |
| 3021 | 3176 |
|
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3177 input_line_number = 1; |
| 3021 | 3178 current_input_column = 1; |
| 4238 | 3179 end_tokens_expected = 0; |
| 3021 | 3180 reading_fcn_file = true; |
| 3181 line_editing = false; | |
| 4238 | 3182 parent_function_name = ""; |
| 7336 | 3183 current_class_name = dispatch_type; |
| 3021 | 3184 |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3185 // The next four lines must be in this order. |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3186 unwind_protect::add (restore_command_history, 0); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3187 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3188 // FIXME -- we shouldn't need both the |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3189 // command_history object and the |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3190 // Vsaving_history variable... |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3191 command_history::ignore_entries (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3192 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3193 unwind_protect_bool (Vsaving_history); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3194 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3195 Vsaving_history = false; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3196 |
| 3021 | 3197 FILE *ffile = get_input_from_file (ff, 0); |
| 3198 | |
| 3199 unwind_protect::add (safe_fclose, ffile); | |
| 3200 | |
| 3201 if (ffile) | |
| 3202 { | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3203 bool eof; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3204 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3205 std::string help_txt = gobble_leading_white_space (ffile, eof); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3206 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3207 if (! eof) |
| 3021 | 3208 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3209 std::string file_type; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3210 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3211 bool parsing_script = false; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3212 |
|
7750
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3213 unwind_protect_bool (get_input_from_eval_string); |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3214 unwind_protect_bool (parser_end_of_input); |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3215 |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3216 get_input_from_eval_string = false; |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3217 parser_end_of_input = false; |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3218 |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3219 if (! force_script && looking_at_function_keyword (ffile)) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3220 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3221 file_type = "function"; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3222 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3223 unwind_protect_int (Vecho_executing_commands); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3224 unwind_protect_bool (reading_fcn_file); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3225 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3226 Vecho_executing_commands = ECHO_OFF; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3227 reading_fcn_file = true; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3228 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3229 else |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3230 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3231 file_type = "script"; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3232 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3233 // The value of `reading_fcn_file' will be restored to the |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3234 // proper value when we unwind from this frame. |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3235 reading_fcn_file = old_reading_fcn_file_state; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3236 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3237 unwind_protect_bool (reading_script_file); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3238 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3239 reading_script_file = true; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3240 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3241 parsing_script = true; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3242 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3243 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3244 YY_BUFFER_STATE old_buf = current_buffer (); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3245 YY_BUFFER_STATE new_buf = create_buffer (ffile); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3246 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3247 unwind_protect::add (restore_input_buffer, old_buf); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3248 unwind_protect::add (delete_input_buffer, new_buf); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3249 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3250 switch_to_buffer (new_buf); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3251 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3252 unwind_protect_ptr (curr_fcn_ptr); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3253 curr_fcn_ptr = 0; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3254 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3255 reset_parser (); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3256 |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3257 if (! help_txt.empty ()) |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3258 help_buf.push (help_txt); |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3259 |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3260 if (parsing_script) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3261 prep_lexer_for_script (); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3262 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3263 lexer_flags.parsing_class_method = ! dispatch_type.empty (); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3264 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3265 int status = yyparse (); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3266 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3267 fcn_ptr = curr_fcn_ptr; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3268 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3269 if (status != 0) |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3270 error ("parse error while reading %s file %s", |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3271 file_type.c_str(), ff.c_str ()); |
| 3021 | 3272 } |
| 3273 } | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3274 else if (require_file) |
| 3880 | 3275 error ("no such file, `%s'", ff.c_str ()); |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3276 else if (! warn_for.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3277 error ("%s: unable to open file `%s'", warn_for.c_str (), ff.c_str ()); |
| 3021 | 3278 |
| 3279 unwind_protect::run_frame ("parse_fcn_file"); | |
| 3280 | |
| 7336 | 3281 return fcn_ptr; |
| 3021 | 3282 } |
| 3283 | |
| 5484 | 3284 std::string |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3285 get_help_from_file (const std::string& nm, bool& symbol_found, |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3286 std::string& file) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3287 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3288 std::string retval; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3289 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3290 file = fcn_file_in_path (nm); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3291 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3292 if (! file.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3293 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3294 symbol_found = true; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3295 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3296 FILE *fptr = fopen (file.c_str (), "r"); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3297 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3298 if (fptr) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3299 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3300 unwind_protect::add (safe_fclose, fptr); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3301 |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3302 bool eof; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3303 retval = gobble_leading_white_space (fptr, eof); |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3304 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3305 if (retval.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3306 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3307 octave_function *fcn = parse_fcn_file (file, ""); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3308 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3309 if (fcn) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3310 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3311 retval = fcn->doc_string (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3312 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3313 delete fcn; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3314 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3315 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3316 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3317 unwind_protect::run (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3318 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3319 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3320 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3321 return retval; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3322 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3323 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3324 std::string |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3325 get_help_from_file (const std::string& nm, bool& symbol_found) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3326 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3327 std::string file; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3328 return get_help_from_file (nm, symbol_found, file); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3329 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3330 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3331 std::string |
| 5484 | 3332 lookup_autoload (const std::string& nm) |
| 3333 { | |
| 5626 | 3334 std::string retval; |
| 3335 | |
| 3336 typedef std::map<std::string, std::string>::const_iterator am_iter; | |
| 3337 | |
| 3338 am_iter p = autoload_map.find (nm); | |
| 3339 | |
| 3340 if (p != autoload_map.end ()) | |
| 6323 | 3341 retval = load_path::find_file (p->second); |
| 5626 | 3342 |
| 3343 return retval; | |
| 5484 | 3344 } |
| 3345 | |
| 5592 | 3346 string_vector |
| 3347 autoloaded_functions (void) | |
| 3348 { | |
| 3349 string_vector names (autoload_map.size()); | |
| 3350 | |
| 3351 octave_idx_type i = 0; | |
| 5626 | 3352 typedef std::map<std::string, std::string>::const_iterator am_iter; |
| 3353 for (am_iter p = autoload_map.begin (); p != autoload_map.end (); p++) | |
| 5592 | 3354 names[i++] = p->first; |
| 3355 | |
| 3356 return names; | |
| 3357 } | |
| 3358 | |
| 3359 string_vector | |
| 3360 reverse_lookup_autoload (const std::string& nm) | |
| 3361 { | |
| 3362 string_vector names; | |
| 3363 | |
| 5626 | 3364 typedef std::map<std::string, std::string>::const_iterator am_iter; |
| 3365 for (am_iter p = autoload_map.begin (); p != autoload_map.end (); p++) | |
| 5592 | 3366 if (nm == p->second) |
| 3367 names.append (p->first); | |
| 3368 | |
| 3369 return names; | |
| 3370 } | |
| 3371 | |
| 7336 | 3372 octave_function * |
| 3373 load_fcn_from_file (const std::string& file_name, const std::string& dir_name, | |
| 3374 const std::string& dispatch_type, | |
| 3375 const std::string& fcn_name, bool autoload) | |
| 3021 | 3376 { |
| 7336 | 3377 octave_function *retval = 0; |
| 3378 | |
| 5484 | 3379 unwind_protect::begin_frame ("load_fcn_from_file"); |
| 3380 | |
| 7336 | 3381 std::string nm = file_name; |
| 6238 | 3382 |
| 3383 size_t nm_len = nm.length (); | |
| 5472 | 3384 |
| 3385 std::string file; | |
| 3386 | |
| 6323 | 3387 unwind_protect_bool (fcn_file_from_relative_lookup); |
| 3388 | |
| 3389 fcn_file_from_relative_lookup = false; | |
| 3390 | |
| 7336 | 3391 file = nm; |
| 3392 | |
| 3393 if ((nm_len > 4 && nm.substr (nm_len-4) == ".oct") | |
| 3394 || (nm_len > 4 && nm.substr (nm_len-4) == ".mex") | |
| 3395 || (nm_len > 2 && nm.substr (nm_len-2) == ".m")) | |
| 5472 | 3396 { |
| 6238 | 3397 nm = octave_env::base_pathname (file); |
| 3398 nm = nm.substr (0, nm.find_last_of ('.')); | |
| 5472 | 3399 } |
| 7336 | 3400 |
| 3401 if (autoload) | |
| 5472 | 3402 { |
| 7336 | 3403 unwind_protect_bool (autoloading); |
| 3404 autoloading = true; | |
| 3405 } | |
| 3406 | |
|
7749
14e05160b99f
reference counting for functions loaded from shared libraries
John W. Eaton <jwe@octave.org>
parents:
7736
diff
changeset
|
3407 fcn_file_from_relative_lookup = ! octave_env::absolute_pathname (file); |
|
14e05160b99f
reference counting for functions loaded from shared libraries
John W. Eaton <jwe@octave.org>
parents:
7736
diff
changeset
|
3408 |
|
14e05160b99f
reference counting for functions loaded from shared libraries
John W. Eaton <jwe@octave.org>
parents:
7736
diff
changeset
|
3409 file = octave_env::make_absolute (file, octave_env::getcwd ()); |
| 4243 | 3410 |
| 3411 int len = file.length (); | |
| 3412 | |
| 4244 | 3413 if (len > 4 && file.substr (len-4, len-1) == ".oct") |
| 3021 | 3414 { |
| 7336 | 3415 if (autoload && ! fcn_name.empty ()) |
| 3416 nm = fcn_name; | |
| 3417 | |
| 3418 retval = octave_dynamic_loader::load_oct (nm, file, fcn_file_from_relative_lookup); | |
| 5864 | 3419 } |
| 3420 else if (len > 4 && file.substr (len-4, len-1) == ".mex") | |
| 7336 | 3421 retval = octave_dynamic_loader::load_mex (nm, file, fcn_file_from_relative_lookup); |
| 4244 | 3422 else if (len > 2) |
| 3021 | 3423 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3424 // These are needed by yyparse. |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3425 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3426 unwind_protect_str (curr_fcn_file_name); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3427 unwind_protect_str (curr_fcn_file_full_name); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3428 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3429 curr_fcn_file_name = nm; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3430 curr_fcn_file_full_name = file; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3431 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3432 retval = parse_fcn_file (file, dispatch_type, autoloading); |
| 3021 | 3433 } |
| 3434 | |
| 7336 | 3435 if (retval) |
|
8819
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3436 { |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3437 retval->stash_dir_name (dir_name); |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3438 |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3439 if (retval->is_user_function ()) |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3440 { |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3441 symbol_table::scope_id id = retval->scope (); |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3442 |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3443 symbol_table::stash_dir_name_for_subfunctions (id, dir_name); |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3444 } |
|
96d87674b818
also stash directory name for subfunctions
John W. Eaton <jwe@octave.org>
parents:
8812
diff
changeset
|
3445 } |
| 7336 | 3446 |
| 5484 | 3447 unwind_protect::run_frame ("load_fcn_from_file"); |
| 3448 | |
| 7336 | 3449 return retval; |
| 5312 | 3450 } |
| 3451 | |
|
8746
5dd06f19e9be
handle commands in the lexer
John W. Eaton <jwe@octave.org>
parents:
8745
diff
changeset
|
3452 DEFUN (autoload, args, , |
| 5484 | 3453 "-*- texinfo -*-\n\ |
| 3454 @deftypefn {Built-in Function} {} autoload (@var{function}, @var{file})\n\ | |
| 3455 Define @var{function} to autoload from @var{file}.\n\ | |
| 5626 | 3456 \n\ |
| 6926 | 3457 The second argument, @var{file}, should be an absolute file name or\n\ |
| 3458 a file name in the same directory as the function or script from which\n\ | |
| 3459 the autoload command was run. @var{file} should not depend on the\n\ | |
| 3460 Octave load path.\n\ | |
| 6380 | 3461 \n\ |
| 3462 Normally, calls to @code{autoload} appear in PKG_ADD script files that\n\ | |
| 3463 are evaluated when a directory is added to the Octave's load path. To\n\ | |
| 6926 | 3464 avoid having to hardcode directory names in @var{file}, if @var{file}\n\ |
| 3465 is in the same directory as the PKG_ADD script then\n\ | |
| 6380 | 3466 \n\ |
| 3467 @example\n\ | |
| 6926 | 3468 autoload (\"foo\", \"bar.oct\");\n\ |
| 6380 | 3469 @end example\n\ |
| 3470 \n\ | |
| 6926 | 3471 will load the function @code{foo} from the file @code{bar.oct}. The above\n\ |
| 3472 when @code{bar.oct} is not in the same directory or uses like\n\ | |
| 6380 | 3473 \n\ |
| 3474 @example\n\ | |
| 6637 | 3475 autoload (\"foo\", file_in_loadpath (\"bar.oct\"))\n\ |
| 6380 | 3476 @end example\n\ |
| 3477 \n\ | |
| 3478 @noindent\n\ | |
| 6926 | 3479 are strongly discouraged, as their behavior might be unpredictable.\n\ |
| 6380 | 3480 \n\ |
| 6637 | 3481 With no arguments, return a structure containing the current autoload map.\n\ |
| 6380 | 3482 @seealso{PKG_ADD}\n\ |
| 5484 | 3483 @end deftypefn") |
| 3484 { | |
| 5626 | 3485 octave_value retval; |
| 5484 | 3486 |
| 3487 int nargin = args.length (); | |
| 3488 | |
| 5626 | 3489 if (nargin == 0) |
| 3490 { | |
| 3491 Cell func_names (dim_vector (autoload_map.size ()), 1); | |
| 3492 Cell file_names (dim_vector (autoload_map.size ()), 1); | |
| 3493 | |
| 3494 octave_idx_type i = 0; | |
| 3495 typedef std::map<std::string, std::string>::const_iterator am_iter; | |
| 3496 for (am_iter p = autoload_map.begin (); p != autoload_map.end (); p++) | |
| 3497 { | |
| 3498 func_names(i) = p->first; | |
| 3499 file_names(i) = p->second; | |
| 3500 | |
| 3501 i++; | |
| 3502 } | |
| 3503 | |
| 3504 Octave_map m; | |
| 3505 | |
| 3506 m.assign ("function", func_names); | |
| 3507 m.assign ("file", file_names); | |
| 3508 | |
| 3509 retval = m; | |
| 3510 } | |
| 3511 else if (nargin == 2) | |
| 5484 | 3512 { |
| 3513 string_vector argv = args.make_argv ("autoload"); | |
| 3514 | |
| 3515 if (! error_state) | |
| 6380 | 3516 { |
| 3517 std::string nm = argv[2]; | |
| 3518 | |
| 3519 if (! octave_env::absolute_pathname (nm)) | |
| 6926 | 3520 { |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3521 octave_user_code *fcn = octave_call_stack::caller_user_code (); |
|
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3522 |
| 6926 | 3523 bool found = false; |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3524 |
| 6926 | 3525 if (fcn) |
| 3526 { | |
| 3527 std::string fname = fcn->fcn_file_name (); | |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3528 |
| 6926 | 3529 if (! fname.empty ()) |
| 3530 { | |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3531 fname = octave_env::make_absolute (fname, octave_env::getcwd ()); |
|
8007
a2ab20ba78f7
make file_ops a proper singleton class
John W. Eaton <jwe@octave.org>
parents:
8001
diff
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|
3532 fname = fname.substr (0, fname.find_last_of (file_ops::dir_sep_str ()) + 1); |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
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7715
diff
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|
3533 |
| 6926 | 3534 file_stat fs (fname + nm); |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3535 |
| 6926 | 3536 if (fs.exists ()) |
| 3537 { | |
| 3538 nm = fname + nm; | |
| 3539 found = true; | |
| 3540 } | |
| 3541 } | |
| 3542 } | |
| 3543 if (! found) | |
| 3544 warning_with_id ("Octave:autoload-relative-file-name", | |
| 3545 "autoload: `%s' is not an absolute file name", | |
| 3546 nm.c_str ()); | |
| 3547 } | |
| 6380 | 3548 autoload_map[argv[1]] = nm; |
| 3549 } | |
| 5484 | 3550 } |
| 3551 else | |
| 5823 | 3552 print_usage (); |
| 5484 | 3553 |
| 3554 return retval; | |
| 3555 } | |
| 3556 | |
| 4486 | 3557 void |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3558 source_file (const std::string& file_name, const std::string& context, |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3559 bool verbose, bool require_file, const std::string& warn_for) |
| 4486 | 3560 { |
| 3561 std::string file_full_name = file_ops::tilde_expand (file_name); | |
| 3562 | |
| 3563 unwind_protect::begin_frame ("source_file"); | |
| 3564 | |
| 3565 unwind_protect_str (curr_fcn_file_name); | |
| 3566 unwind_protect_str (curr_fcn_file_full_name); | |
| 3567 | |
| 3568 curr_fcn_file_name = file_name; | |
| 3569 curr_fcn_file_full_name = file_full_name; | |
| 3570 | |
| 5975 | 3571 if (! context.empty ()) |
| 3572 { | |
| 3573 if (context == "caller") | |
| 7901 | 3574 octave_call_stack::goto_caller_frame (); |
| 5975 | 3575 else if (context == "base") |
| 7901 | 3576 octave_call_stack::goto_base_frame (); |
| 5975 | 3577 else |
| 3578 error ("source: context must be \"caller\" or \"base\""); | |
| 7336 | 3579 |
| 3580 if (! error_state) | |
| 7901 | 3581 unwind_protect::add (octave_call_stack::unwind_pop); |
| 5975 | 3582 } |
| 3583 | |
| 3584 if (! error_state) | |
| 3585 { | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3586 octave_function *fcn = parse_fcn_file (file_full_name, "", true, |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3587 require_file, warn_for); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3588 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
3589 if (! error_state) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3590 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3591 if (fcn && fcn->is_user_script ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3592 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3593 octave_value_list args; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3594 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3595 if (verbose) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3596 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3597 std::cout << "executing commands from " << file_full_name << " ... "; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3598 reading_startup_message_printed = true; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3599 std::cout.flush (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3600 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3601 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3602 fcn->do_multi_index_op (0, args); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3603 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3604 if (verbose) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3605 std::cout << "done." << std::endl; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3606 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3607 delete fcn; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3608 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3609 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3610 else |
| 5975 | 3611 error ("source: error sourcing file `%s'", |
| 3612 file_full_name.c_str ()); | |
| 3613 } | |
| 4486 | 3614 |
| 3615 unwind_protect::run_frame ("source_file"); | |
| 3616 } | |
| 3617 | |
| 5739 | 3618 DEFUN (mfilename, args, , |
| 3619 "-*- texinfo -*-\n\ | |
| 3620 @deftypefn {Built-in Function} {} mfilename ()\n\ | |
| 3621 @deftypefnx {Built-in Function} {} mfilename (@code{\"fullpath\"})\n\ | |
| 3622 @deftypefnx {Built-in Function} {} mfilename (@code{\"fullpathext\"})\n\ | |
| 3623 Return the name of the currently executing file. At the top-level,\n\ | |
| 3624 return the empty string. Given the argument @code{\"fullpath\"},\n\ | |
| 3625 include the directory part of the file name, but not the extension.\n\ | |
| 3626 Given the argument @code{\"fullpathext\"}, include the directory part\n\ | |
| 3627 of the file name and the extension.\n\ | |
| 5774 | 3628 @end deftypefn") |
| 5739 | 3629 { |
| 3630 octave_value retval; | |
| 3631 | |
| 3632 int nargin = args.length (); | |
| 3633 | |
| 3634 if (nargin > 1) | |
| 3635 { | |
| 5823 | 3636 print_usage (); |
| 5739 | 3637 return retval; |
| 3638 } | |
| 3639 | |
| 3640 std::string arg; | |
| 3641 | |
| 3642 if (nargin == 1) | |
| 3643 { | |
| 3644 arg = args(0).string_value (); | |
| 3645 | |
| 3646 if (error_state) | |
| 3647 { | |
| 3648 error ("mfilename: expecting argument to be a character string"); | |
| 3649 return retval; | |
| 3650 } | |
| 3651 } | |
| 3652 | |
| 3653 std::string fname; | |
| 3654 | |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7715
diff
changeset
|
3655 octave_user_code *fcn = octave_call_stack::caller_user_code (); |
| 5743 | 3656 |
| 3657 if (fcn) | |
| 3658 { | |
| 3659 fname = fcn->fcn_file_name (); | |
| 3660 | |
| 3661 if (fname.empty ()) | |
| 3662 fname = fcn->name (); | |
| 3663 } | |
| 5739 | 3664 |
| 3665 if (arg == "fullpathext") | |
| 3666 retval = fname; | |
| 3667 else | |
| 3668 { | |
|
8007
a2ab20ba78f7
make file_ops a proper singleton class
John W. Eaton <jwe@octave.org>
parents:
8001
diff
changeset
|
3669 size_t dpos = fname.rfind (file_ops::dir_sep_char ()); |
| 5747 | 3670 size_t epos = fname.rfind ('.'); |
| 3671 | |
| 3672 if (epos <= dpos) | |
| 8021 | 3673 epos = std::string::npos; |
| 3674 | |
| 3675 fname = (epos != std::string::npos) ? fname.substr (0, epos) : fname; | |
| 5739 | 3676 |
| 3677 if (arg == "fullpath") | |
| 3678 retval = fname; | |
| 3679 else | |
| 8021 | 3680 retval = (dpos != std::string::npos) ? fname.substr (dpos+1) : fname; |
| 5739 | 3681 } |
| 3682 | |
| 3683 return retval; | |
| 3684 } | |
| 3685 | |
| 3686 | |
| 3021 | 3687 DEFUN (source, args, , |
| 3371 | 3688 "-*- texinfo -*-\n\ |
| 3689 @deftypefn {Built-in Function} {} source (@var{file})\n\ | |
| 3690 Parse and execute the contents of @var{file}. This is equivalent to\n\ | |
| 3691 executing commands from a script file, but without requiring the file to\n\ | |
| 3692 be named @file{@var{file}.m}.\n\ | |
| 3693 @end deftypefn") | |
| 3021 | 3694 { |
| 3695 octave_value_list retval; | |
| 3696 | |
| 3697 int nargin = args.length (); | |
| 3698 | |
| 5975 | 3699 if (nargin == 1 || nargin == 2) |
| 3021 | 3700 { |
| 3523 | 3701 std::string file_name = args(0).string_value (); |
| 3021 | 3702 |
| 3703 if (! error_state) | |
| 5975 | 3704 { |
| 3705 std::string context; | |
| 3706 | |
| 3707 if (nargin == 2) | |
| 3708 context = args(1).string_value (); | |
| 3709 | |
| 3710 if (! error_state) | |
| 3711 source_file (file_name, context); | |
| 3712 else | |
| 3713 error ("source: expecting context to be character string"); | |
| 3714 } | |
| 3021 | 3715 else |
| 3716 error ("source: expecting file name as argument"); | |
| 3717 } | |
| 3718 else | |
| 5823 | 3719 print_usage (); |
| 3021 | 3720 |
| 3721 return retval; | |
| 3722 } | |
| 3723 | |
| 3726 | 3724 // Evaluate an Octave function (built-in or interpreted) and return |
| 3844 | 3725 // the list of result values. NAME is the name of the function to |
| 3726 // call. ARGS are the arguments to the function. NARGOUT is the | |
| 3727 // number of output arguments expected. | |
| 3726 | 3728 |
| 3021 | 3729 octave_value_list |
| 3523 | 3730 feval (const std::string& name, const octave_value_list& args, int nargout) |
| 3156 | 3731 { |
| 3732 octave_value_list retval; | |
| 3733 | |
| 7336 | 3734 octave_value fcn = symbol_table::find_function (name, args); |
| 3735 | |
| 3736 if (fcn.is_defined ()) | |
| 3737 retval = fcn.do_multi_index_op (nargout, args); | |
| 3738 else | |
| 3739 error ("feval: function `%s' not found", name.c_str ()); | |
| 3156 | 3740 |
| 3741 return retval; | |
| 3742 } | |
| 3743 | |
| 4342 | 3744 octave_value_list |
| 3745 feval (octave_function *fcn, const octave_value_list& args, int nargout) | |
| 3746 { | |
| 3747 octave_value_list retval; | |
| 3748 | |
| 3749 if (fcn) | |
| 3750 retval = fcn->do_multi_index_op (nargout, args); | |
| 3751 | |
| 3752 return retval; | |
| 3753 } | |
| 3754 | |
| 3755 static octave_value_list | |
| 3756 get_feval_args (const octave_value_list& args) | |
| 3757 { | |
| 3758 int tmp_nargin = args.length () - 1; | |
| 3759 | |
| 3760 octave_value_list retval (tmp_nargin, octave_value ()); | |
| 3761 | |
| 3762 for (int i = 0; i < tmp_nargin; i++) | |
| 3763 retval(i) = args(i+1); | |
| 3764 | |
| 3765 string_vector arg_names = args.name_tags (); | |
| 3766 | |
| 3767 if (! arg_names.empty ()) | |
| 3768 { | |
| 3769 // tmp_nargin and arg_names.length () - 1 may differ if | |
| 3770 // we are passed all_va_args. | |
| 3771 | |
| 3772 int n = arg_names.length () - 1; | |
| 3773 | |
| 3774 int len = n > tmp_nargin ? tmp_nargin : n; | |
| 3775 | |
| 3776 string_vector tmp_arg_names (len); | |
| 3777 | |
| 3778 for (int i = 0; i < len; i++) | |
| 3779 tmp_arg_names(i) = arg_names(i+1); | |
| 3780 | |
| 3781 retval.stash_name_tags (tmp_arg_names); | |
| 3782 } | |
| 3783 | |
| 3784 return retval; | |
| 3785 } | |
| 3786 | |
| 3787 | |
| 3726 | 3788 // Evaluate an Octave function (built-in or interpreted) and return |
| 3789 // the list of result values. The first element of ARGS should be a | |
| 3790 // string containing the name of the function to call, then the rest | |
| 3791 // are the actual arguments to the function. NARGOUT is the number of | |
| 3792 // output arguments expected. | |
| 3793 | |
| 3156 | 3794 octave_value_list |
| 3021 | 3795 feval (const octave_value_list& args, int nargout) |
| 3796 { | |
| 3797 octave_value_list retval; | |
| 3798 | |
| 4342 | 3799 int nargin = args.length (); |
| 3800 | |
| 3801 if (nargin > 0) | |
| 3021 | 3802 { |
| 4342 | 3803 octave_value f_arg = args(0); |
| 3804 | |
| 3805 if (f_arg.is_string ()) | |
| 3806 { | |
| 3807 std::string name = f_arg.string_value (); | |
| 3808 | |
| 3809 if (! error_state) | |
| 3156 | 3810 { |
| 4342 | 3811 octave_value_list tmp_args = get_feval_args (args); |
| 3812 | |
| 3813 retval = feval (name, tmp_args, nargout); | |
| 3156 | 3814 } |
| 4342 | 3815 } |
| 3816 else | |
| 3817 { | |
| 3818 octave_function *fcn = f_arg.function_value (); | |
| 3819 | |
| 3820 if (fcn) | |
| 3821 { | |
| 3822 octave_value_list tmp_args = get_feval_args (args); | |
| 3823 | |
| 3824 retval = feval (fcn, tmp_args, nargout); | |
| 3825 } | |
| 3021 | 3826 } |
| 3827 } | |
| 3828 | |
| 3829 return retval; | |
| 3830 } | |
| 3831 | |
| 3832 DEFUN (feval, args, nargout, | |
| 3371 | 3833 "-*- texinfo -*-\n\ |
| 3834 @deftypefn {Built-in Function} {} feval (@var{name}, @dots{})\n\ | |
| 3835 Evaluate the function named @var{name}. Any arguments after the first\n\ | |
| 3836 are passed on to the named function. For example,\n\ | |
| 3837 \n\ | |
| 3838 @example\n\ | |
| 3839 feval (\"acos\", -1)\n\ | |
| 3840 @result{} 3.1416\n\ | |
| 3841 @end example\n\ | |
| 3021 | 3842 \n\ |
| 3371 | 3843 @noindent\n\ |
| 3844 calls the function @code{acos} with the argument @samp{-1}.\n\ | |
| 3845 \n\ | |
| 3846 The function @code{feval} is necessary in order to be able to write\n\ | |
| 3847 functions that call user-supplied functions, because Octave does not\n\ | |
| 3848 have a way to declare a pointer to a function (like C) or to declare a\n\ | |
| 3849 special kind of variable that can be used to hold the name of a function\n\ | |
| 3850 (like @code{EXTERNAL} in Fortran). Instead, you must refer to functions\n\ | |
| 3851 by name, and use @code{feval} to call them.\n\ | |
| 3852 @end deftypefn") | |
| 3021 | 3853 { |
| 3854 octave_value_list retval; | |
| 3855 | |
| 3856 int nargin = args.length (); | |
| 3857 | |
| 3858 if (nargin > 0) | |
| 3859 retval = feval (args, nargout); | |
| 3860 else | |
| 5823 | 3861 print_usage (); |
| 3021 | 3862 |
| 3863 return retval; | |
| 3864 } | |
| 3865 | |
| 3099 | 3866 octave_value_list |
| 3523 | 3867 eval_string (const std::string& s, bool silent, int& parse_status, int nargout) |
| 3021 | 3868 { |
| 3877 | 3869 octave_value_list retval; |
| 3870 | |
| 3021 | 3871 unwind_protect::begin_frame ("eval_string"); |
| 3872 | |
|
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3873 unwind_protect_int (input_line_number); |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3874 unwind_protect_int (current_input_column); |
| 3021 | 3875 unwind_protect_bool (get_input_from_eval_string); |
| 3877 | 3876 unwind_protect_bool (input_from_eval_string_pending); |
| 3883 | 3877 unwind_protect_bool (parser_end_of_input); |
| 5189 | 3878 unwind_protect_bool (line_editing); |
| 3021 | 3879 unwind_protect_str (current_eval_string); |
| 3880 | |
|
8447
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3881 input_line_number = 1; |
|
adab48231a03
make input_line_number work again
John W. Eaton <jwe@octave.org>
parents:
8311
diff
changeset
|
3882 current_input_column = 1; |
| 3021 | 3883 get_input_from_eval_string = true; |
| 3877 | 3884 input_from_eval_string_pending = true; |
| 3883 | 3885 parser_end_of_input = false; |
| 5189 | 3886 line_editing = false; |
| 3887 | |
| 3021 | 3888 current_eval_string = s; |
| 3889 | |
| 3890 YY_BUFFER_STATE old_buf = current_buffer (); | |
| 3891 YY_BUFFER_STATE new_buf = create_buffer (0); | |
| 3892 | |
| 3893 unwind_protect::add (restore_input_buffer, old_buf); | |
| 3894 unwind_protect::add (delete_input_buffer, new_buf); | |
| 3895 | |
| 3896 switch_to_buffer (new_buf); | |
| 3897 | |
| 3877 | 3898 do |
| 3899 { | |
| 4318 | 3900 reset_parser (); |
| 3901 | |
|
7903
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3902 unwind_protect_ptr (global_command); |
|
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3903 |
| 3877 | 3904 parse_status = yyparse (); |
| 3905 | |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3906 tree_statement_list *command_list = global_command; |
| 3877 | 3907 |
|
7903
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3908 // Restore previous value of global_command. |
|
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3909 unwind_protect::run (); |
|
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3910 |
| 3883 | 3911 if (parse_status == 0) |
| 3877 | 3912 { |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3913 if (command_list) |
| 3883 | 3914 { |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3915 tree_statement *stmt = 0; |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3916 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3917 if (command_list->length () == 1 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3918 && (stmt = command_list->front ()) |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3919 && stmt->is_expression ()) |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3920 { |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3921 tree_expression *expr = stmt->expression (); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3922 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3923 if (silent) |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3924 expr->set_print_flag (false); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3925 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3926 bool do_bind_ans = false; |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3927 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3928 if (expr->is_identifier ()) |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3929 { |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3930 tree_identifier *id |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3931 = dynamic_cast<tree_identifier *> (expr); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3932 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3933 do_bind_ans = (! id->is_variable ()); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3934 } |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3935 else |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3936 do_bind_ans = (! expr->is_assignment_expression ()); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3937 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3938 retval = expr->rvalue (nargout); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3939 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3940 if (do_bind_ans && ! (error_state || retval.empty ())) |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3941 bind_ans (retval(0), expr->print_result ()); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3942 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3943 if (nargout == 0) |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3944 retval = octave_value_list (); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3945 } |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3946 else if (nargout == 0) |
|
8697
b227213a70c3
parse.y (eval_string): use the one true evaluator
John W. Eaton <jwe@octave.org>
parents:
8669
diff
changeset
|
3947 command_list->accept (*current_evaluator); |
|
8658
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3948 else |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3949 error ("eval: invalid use of statement list"); |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3950 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3951 delete command_list; |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3952 |
|
73c4516fae10
New evaluator and debugger derived from tree-walker class
John W. Eaton <jwe@octave.org>
parents:
8471
diff
changeset
|
3953 command_list = 0; |
| 3883 | 3954 |
| 3955 if (error_state | |
| 4207 | 3956 || tree_return_command::returning |
| 3957 || tree_break_command::breaking | |
| 3958 || tree_continue_command::continuing) | |
| 3883 | 3959 break; |
| 3960 } | |
| 3961 else if (parser_end_of_input) | |
| 3877 | 3962 break; |
| 3883 | 3963 } |
| 3877 | 3964 } |
| 3965 while (parse_status == 0); | |
| 3021 | 3966 |
| 3967 unwind_protect::run_frame ("eval_string"); | |
| 3968 | |
| 3969 return retval; | |
| 3970 } | |
| 3971 | |
| 3972 octave_value | |
| 3523 | 3973 eval_string (const std::string& s, bool silent, int& parse_status) |
| 3021 | 3974 { |
| 3975 octave_value retval; | |
| 3976 | |
| 3977 octave_value_list tmp = eval_string (s, silent, parse_status, 1); | |
| 3978 | |
| 3979 if (! tmp.empty ()) | |
| 3980 retval = tmp(0); | |
| 3981 | |
| 3982 return retval; | |
| 3983 } | |
| 3984 | |
| 3985 static octave_value_list | |
| 3986 eval_string (const octave_value& arg, bool silent, int& parse_status, | |
| 3987 int nargout) | |
| 3988 { | |
| 3523 | 3989 std::string s = arg.string_value (); |
| 3021 | 3990 |
| 3991 if (error_state) | |
| 3992 { | |
| 3523 | 3993 error ("eval: expecting std::string argument"); |
| 4233 | 3994 return octave_value (-1); |
| 3021 | 3995 } |
| 3996 | |
| 3997 return eval_string (s, silent, parse_status, nargout); | |
| 3998 } | |
| 3999 | |
| 4000 DEFUN (eval, args, nargout, | |
| 3371 | 4001 "-*- texinfo -*-\n\ |
| 4002 @deftypefn {Built-in Function} {} eval (@var{try}, @var{catch})\n\ | |
| 4003 Parse the string @var{try} and evaluate it as if it were an Octave\n\ | |
| 6643 | 4004 program. If that fails, evaluate the optional string @var{catch}.\n\ |
| 4463 | 4005 The string @var{try} is evaluated in the current context,\n\ |
| 4006 so any results remain available after @code{eval} returns.\n\ | |
| 6643 | 4007 \n\ |
| 4008 The following example makes the variable @var{a} with the approximate\n\ | |
| 4009 value 3.1416 available.\n\ | |
| 4010 \n\ | |
| 4011 @example\n\ | |
| 4012 eval(\"a = acos(-1);\");\n\ | |
| 4013 @end example\n\ | |
| 4014 \n\ | |
| 4015 If an error occurs during the evaluation of @var{try} the @var{catch}\n\ | |
| 8828 | 4016 string is evaluated, as the following example shows:\n\ |
| 6643 | 4017 \n\ |
| 4018 @example\n\ | |
| 4019 eval ('error (\"This is a bad example\");',\n\ | |
|
8015
30629059b72d
Update the manual to reflect the changes in error output
sh@sh-laptop
parents:
8007
diff
changeset
|
4020 'printf (\"This error occurred:\\n%s\\n\", lasterr ());');\n\ |
| 7001 | 4021 @print{} This error occurred:\n\ |
|
8015
30629059b72d
Update the manual to reflect the changes in error output
sh@sh-laptop
parents:
8007
diff
changeset
|
4022 This is a bad example\n\ |
| 6643 | 4023 @end example\n\ |
| 3371 | 4024 @end deftypefn") |
| 3021 | 4025 { |
| 4026 octave_value_list retval; | |
| 4027 | |
| 4028 int nargin = args.length (); | |
| 4029 | |
| 4030 if (nargin > 0) | |
| 4031 { | |
| 4032 unwind_protect::begin_frame ("Feval"); | |
| 4033 | |
| 4034 if (nargin > 1) | |
| 4035 { | |
| 4699 | 4036 unwind_protect_int (buffer_error_messages); |
| 4037 buffer_error_messages++; | |
| 3021 | 4038 } |
| 4039 | |
| 4040 int parse_status = 0; | |
| 4041 | |
| 4463 | 4042 octave_value_list tmp = eval_string (args(0), nargout > 0, |
| 4043 parse_status, nargout); | |
| 4044 | |
| 3021 | 4045 if (nargin > 1 && (parse_status != 0 || error_state)) |
| 4046 { | |
| 4047 error_state = 0; | |
| 4048 | |
| 4049 // Set up for letting the user print any messages from | |
| 4050 // errors that occurred in the first part of this eval(). | |
| 4051 | |
| 4699 | 4052 buffer_error_messages--; |
| 3021 | 4053 |
|
8033
2ad5ba320b93
parse.y (Feval): Return value produced by evaluating CATCH string
John W. Eaton <jwe@octave.org>
parents:
8021
diff
changeset
|
4054 tmp = eval_string (args(1), nargout > 0, parse_status, nargout); |
|
2ad5ba320b93
parse.y (Feval): Return value produced by evaluating CATCH string
John W. Eaton <jwe@octave.org>
parents:
8021
diff
changeset
|
4055 |
|
2ad5ba320b93
parse.y (Feval): Return value produced by evaluating CATCH string
John W. Eaton <jwe@octave.org>
parents:
8021
diff
changeset
|
4056 if (nargout > 0) |
|
2ad5ba320b93
parse.y (Feval): Return value produced by evaluating CATCH string
John W. Eaton <jwe@octave.org>
parents:
8021
diff
changeset
|
4057 retval = tmp; |
| 3021 | 4058 } |
|
8033
2ad5ba320b93
parse.y (Feval): Return value produced by evaluating CATCH string
John W. Eaton <jwe@octave.org>
parents:
8021
diff
changeset
|
4059 else if (nargout > 0) |
|
2ad5ba320b93
parse.y (Feval): Return value produced by evaluating CATCH string
John W. Eaton <jwe@octave.org>
parents:
8021
diff
changeset
|
4060 retval = tmp; |
| 3021 | 4061 |
| 4062 unwind_protect::run_frame ("Feval"); | |
| 4063 } | |
| 4064 else | |
| 5823 | 4065 print_usage (); |
| 3021 | 4066 |
| 4067 return retval; | |
| 4068 } | |
| 4069 | |
|
7562
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4070 /* |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4071 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4072 %% test/octave.test/eval/eval-1.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4073 %!#test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4074 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4075 %! assert(eval ("x"),1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4076 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4077 %% test/octave.test/eval/eval-2.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4078 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4079 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4080 %! assert(eval ("x;")); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4081 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4082 %% test/octave.test/eval/eval-3.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4083 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4084 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4085 %! assert(eval ("x;"),1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4086 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4087 %% FIXME |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4088 %% Disable this test as adding the ";" is redundant with eval-1 and |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4089 %% in any case is a syntax error with assert |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4090 %% test/octave.test/eval/eval-4.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4091 %!#test |
|
c827f5673321
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parents:
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diff
changeset
|
4092 %! x = 1; |
|
c827f5673321
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parents:
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diff
changeset
|
4093 %! assert(eval ("x");,1); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4094 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4095 %% test/octave.test/eval/eval-5.m |
|
c827f5673321
move tests to individual source files
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parents:
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diff
changeset
|
4096 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4097 %! eval ("flipud = 2;"); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4098 %! assert(flipud,2); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4099 |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4100 %% test/octave.test/eval/eval-6.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4101 %!function y = f () |
|
c827f5673321
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diff
changeset
|
4102 %! eval ("flipud = 2;"); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4103 %! y = flipud; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4104 %!test |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4105 %! assert(f,2); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4106 |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4107 %% test/octave.test/eval/eval-7.m |
|
c827f5673321
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diff
changeset
|
4108 %!#test |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4109 %! eval ("x = 1"); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4110 %! assert(x,1); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4111 |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4112 %% test/octave.test/eval/eval-8.m |
|
c827f5673321
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diff
changeset
|
4113 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4114 %! eval ("x = 1;") |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4115 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4116 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4117 %% test/octave.test/eval/eval-9.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4118 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4119 %! eval ("x = 1;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4120 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4121 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4122 %% test/octave.test/eval/eval-10.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4123 %!#test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4124 %! eval ("x = 1") |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4125 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4126 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4127 %% test/octave.test/eval/eval-11.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
4128 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
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7351
diff
changeset
|
4129 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4130 %! y = eval ("x"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4131 %! assert(y,1); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4132 |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4133 %% test/octave.test/eval/eval-12.m |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4134 %!test |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4135 %! x = 1; |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4136 %! y = eval ("x;"); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4137 %! assert(y,1); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4138 |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4139 %% test/octave.test/eval/eval-13.m |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4140 %!test |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4141 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4142 %! y = eval ("x;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4143 %! assert(y,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4144 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4145 %% test/octave.test/eval/eval-14.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4146 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4147 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
4148 %! y = eval ("x"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
4149 %! assert(y,1); |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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7351
diff
changeset
|
4150 |
|
c827f5673321
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4151 */ |
|
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
4152 |
| 4661 | 4153 DEFUN (assignin, args, , |
| 4297 | 4154 "-*- texinfo -*-\n\ |
| 4155 @deftypefn {Built-in Function} {} assignin (@var{context}, @var{varname}, @var{value})\n\ | |
| 4156 Assign @var{value} to @var{varname} in context @var{context}, which\n\ | |
| 4157 may be either @code{\"base\"} or @code{\"caller\"}.\n\ | |
| 4158 @end deftypefn") | |
| 4159 { | |
| 4160 octave_value_list retval; | |
| 4161 | |
| 4162 int nargin = args.length (); | |
| 4163 | |
| 4164 if (nargin == 3) | |
| 4165 { | |
| 4166 std::string context = args(0).string_value (); | |
| 4167 | |
| 4168 if (! error_state) | |
| 4169 { | |
| 4170 if (context == "caller") | |
| 7901 | 4171 octave_call_stack::goto_caller_frame (); |
| 4297 | 4172 else if (context == "base") |
| 7901 | 4173 octave_call_stack::goto_base_frame (); |
| 4297 | 4174 else |
| 4175 error ("assignin: context must be \"caller\" or \"base\""); | |
| 4176 | |
| 4177 if (! error_state) | |
| 4178 { | |
| 7901 | 4179 unwind_protect::add (octave_call_stack::unwind_pop); |
| 4180 | |
| 4297 | 4181 std::string nm = args(1).string_value (); |
| 4182 | |
| 4183 if (! error_state) | |
| 4184 { | |
| 4185 if (valid_identifier (nm)) | |
|
8064
4f1ebb704545
fix invalid scope use in assignin
Jaroslav Hajek <highegg@gmail.com>
parents:
8033
diff
changeset
|
4186 symbol_table::varref (nm) = args(2); |
| 4297 | 4187 else |
| 4188 error ("assignin: invalid variable name"); | |
| 4189 } | |
| 4190 else | |
| 4191 error ("assignin: expecting variable name as second argument"); | |
| 4192 } | |
| 4193 } | |
| 4194 else | |
| 4195 error ("assignin: expecting string as first argument"); | |
| 4196 } | |
| 4197 else | |
| 5823 | 4198 print_usage (); |
| 4297 | 4199 |
| 4200 return retval; | |
| 4201 } | |
| 4202 | |
| 4245 | 4203 DEFUN (evalin, args, nargout, |
| 4204 "-*- texinfo -*-\n\ | |
| 4205 @deftypefn {Built-in Function} {} evalin (@var{context}, @var{try}, @var{catch})\n\ | |
| 4206 Like @code{eval}, except that the expressions are evaluated in the\n\ | |
| 4207 context @var{context}, which may be either @code{\"caller\"} or\n\ | |
| 4246 | 4208 @code{\"base\"}.\n\ |
| 4245 | 4209 @end deftypefn") |
| 4210 { | |
| 4211 octave_value_list retval; | |
| 4212 | |
| 4213 int nargin = args.length (); | |
| 4214 | |
| 4215 if (nargin > 1) | |
| 4216 { | |
| 4217 std::string context = args(0).string_value (); | |
| 4218 | |
| 4219 if (! error_state) | |
| 4220 { | |
| 4221 unwind_protect::begin_frame ("Fevalin"); | |
| 4222 | |
| 4223 if (context == "caller") | |
| 7901 | 4224 octave_call_stack::goto_caller_frame (); |
| 4245 | 4225 else if (context == "base") |
| 7901 | 4226 octave_call_stack::goto_base_frame (); |
| 4245 | 4227 else |
| 4228 error ("evalin: context must be \"caller\" or \"base\""); | |
| 4229 | |
| 4297 | 4230 if (! error_state) |
| 4245 | 4231 { |
| 7901 | 4232 unwind_protect::add (octave_call_stack::unwind_pop); |
| 7336 | 4233 |
| 4297 | 4234 if (nargin > 2) |
| 4235 { | |
| 4699 | 4236 unwind_protect_int (buffer_error_messages); |
| 4237 buffer_error_messages++; | |
| 4297 | 4238 } |
| 4239 | |
| 4240 int parse_status = 0; | |
| 4241 | |
| 4463 | 4242 octave_value_list tmp = eval_string (args(1), nargout > 0, |
| 4243 parse_status, nargout); | |
| 4244 | |
| 4245 if (nargout > 0) | |
| 4246 retval = tmp; | |
| 4297 | 4247 |
| 4248 if (nargin > 2 && (parse_status != 0 || error_state)) | |
| 4249 { | |
| 4250 error_state = 0; | |
| 4251 | |
| 4252 // Set up for letting the user print any messages from | |
| 4253 // errors that occurred in the first part of this eval(). | |
| 4254 | |
| 4699 | 4255 buffer_error_messages--; |
| 4297 | 4256 |
| 4257 eval_string (args(2), 0, parse_status, nargout); | |
| 4258 | |
| 4259 retval = octave_value_list (); | |
| 4260 } | |
| 4245 | 4261 } |
| 4262 | |
| 4263 unwind_protect::run_frame ("Fevalin"); | |
| 4264 } | |
| 4265 else | |
| 4266 error ("evalin: expecting string as first argument"); | |
| 4267 } | |
| 4268 else | |
| 5823 | 4269 print_usage (); |
| 4245 | 4270 |
| 4271 return retval; | |
| 4272 } | |
| 4273 | |
|
8311
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4274 DEFUN (__parser_debug_flag__, args, nargout, |
|
8812
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
4275 "-*- texinfo -*-\n\ |
|
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
4276 @deftypefn {Built-in Function} {@var{old_val} =} __parser_debug_flag__ (@var{new_val}))\n\ |
|
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
4277 Undocumented internal function.\n\ |
|
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
8746
diff
changeset
|
4278 @end deftypefn") |
|
8311
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4279 { |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4280 octave_value retval; |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4281 |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4282 bool debug_flag = octave_debug; |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4283 |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4284 retval = set_internal_variable (debug_flag, args, nargout, |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4285 "__parser_debug_flag__"); |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4286 |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4287 octave_debug = debug_flag; |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4288 |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4289 return retval; |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4290 } |
|
7124bffc89c7
parse.y (F__parser_debug_flag__): New function.
John W. Eaton <jwe@octave.org>
parents:
8283
diff
changeset
|
4291 |
| 1994 | 4292 /* |
| 4293 ;;; Local Variables: *** | |
| 4294 ;;; mode: text *** | |
| 4295 ;;; End: *** | |
| 4296 */ |