Mercurial > octave-libgccjit
annotate src/parse.y @ 8021:85184151822e
fix typo in NPOS change
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 07 Aug 2008 15:31:17 -0400 |
| parents | 0ef13e15319b |
| children | 2ad5ba320b93 |
| rev | line source |
|---|---|
| 1829 | 1 /* |
| 1 | 2 |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 7351 | 4 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 | |
| 5484 | 42 #include <map> |
| 5765 | 43 #include <sstream> |
| 5484 | 44 |
| 3928 | 45 #include "Cell.h" |
| 1 | 46 #include "Matrix.h" |
| 3021 | 47 #include "cmd-edit.h" |
| 48 #include "cmd-hist.h" | |
| 49 #include "file-ops.h" | |
| 50 #include "file-stat.h" | |
| 4243 | 51 #include "oct-env.h" |
| 3712 | 52 #include "oct-time.h" |
| 4171 | 53 #include "quit.h" |
| 1 | 54 |
| 3665 | 55 #include "comment-list.h" |
| 4243 | 56 #include "defaults.h" |
| 2166 | 57 #include "defun.h" |
| 4243 | 58 #include "dirfns.h" |
| 3021 | 59 #include "dynamic-ld.h" |
| 1351 | 60 #include "error.h" |
| 61 #include "input.h" | |
| 62 #include "lex.h" | |
| 5832 | 63 #include "load-path.h" |
| 1743 | 64 #include "oct-hist.h" |
| 5626 | 65 #include "oct-map.h" |
| 4935 | 66 #include "ov-fcn-handle.h" |
| 2970 | 67 #include "ov-usr-fcn.h" |
| 1670 | 68 #include "toplev.h" |
| 1351 | 69 #include "pager.h" |
| 70 #include "parse.h" | |
| 2987 | 71 #include "pt-all.h" |
| 1351 | 72 #include "symtab.h" |
| 73 #include "token.h" | |
| 3021 | 74 #include "unwind-prot.h" |
| 1 | 75 #include "utils.h" |
| 1351 | 76 #include "variables.h" |
| 1 | 77 |
| 78 // The current input line number. | |
| 79 int input_line_number = 0; | |
| 80 | |
| 81 // The column of the current token. | |
| 143 | 82 int current_input_column = 1; |
| 1 | 83 |
| 338 | 84 // Buffer for help text snagged from function files. |
| 4426 | 85 std::stack<std::string> help_buf; |
| 1 | 86 |
| 3665 | 87 // Buffer for comments appearing before a function statement. |
| 88 static std::string fcn_comment_header; | |
| 89 | |
| 3021 | 90 // TRUE means we are using readline. |
| 91 // (--no-line-editing) | |
| 92 bool line_editing = true; | |
| 93 | |
| 94 // TRUE means we printed messages about reading startup files. | |
| 95 bool reading_startup_message_printed = false; | |
| 96 | |
| 97 // TRUE means input is coming from startup file. | |
| 98 bool input_from_startup_file = false; | |
| 99 | |
| 3489 | 100 // TRUE means that we are in the process of evaluating a function |
| 101 // body. The parser might be called in that case if we are looking at | |
| 102 // an eval() statement. | |
| 103 bool evaluating_function_body = false; | |
| 104 | |
| 4238 | 105 // Keep a count of how many END tokens we expect. |
| 106 int end_tokens_expected = 0; | |
| 107 | |
| 3903 | 108 // Keep track of symbol table information when parsing functions. |
| 7336 | 109 std::stack<symbol_table::scope_id> symtab_context; |
| 4238 | 110 |
| 111 // Name of parent function when parsing function files that might | |
| 112 // contain nested functions. | |
| 113 std::string parent_function_name; | |
| 3903 | 114 |
| 7336 | 115 // Name of the current class when we are parsing class methods or |
| 116 // constructors. | |
| 117 std::string current_class_name; | |
| 118 | |
| 5484 | 119 // TRUE means we are in the process of autoloading a function. |
| 120 static bool autoloading = false; | |
| 121 | |
| 6323 | 122 // TRUE means the current function file was found in a relative path |
| 123 // element. | |
| 124 static bool fcn_file_from_relative_lookup = false; | |
| 125 | |
| 7336 | 126 // If nonzero, this is a pointer to the function we just finished |
| 127 // parsing. | |
| 128 static octave_function *curr_fcn_ptr = 0; | |
| 129 | |
| 5484 | 130 // List of autoloads (function -> file mapping). |
| 131 static std::map<std::string, std::string> autoload_map; | |
| 132 | |
| 496 | 133 // Forward declarations for some functions defined at the bottom of |
| 134 // the file. | |
| 135 | |
| 136 // Generic error messages. | |
| 2970 | 137 static void |
| 138 yyerror (const char *s); | |
| 1 | 139 |
| 578 | 140 // Error mesages for mismatched end tokens. |
| 2970 | 141 static void |
| 142 end_error (const char *type, token::end_tok_type ettype, int l, int c); | |
| 1 | 143 |
| 578 | 144 // Check to see that end tokens are properly matched. |
| 2970 | 145 static bool |
| 146 end_token_ok (token *tok, token::end_tok_type expected); | |
| 496 | 147 |
| 148 // Maybe print a warning if an assignment expression is used as the | |
| 149 // test in a logical expression. | |
| 2970 | 150 static void |
| 151 maybe_warn_assign_as_truth_value (tree_expression *expr); | |
| 1 | 152 |
| 2764 | 153 // Maybe print a warning about switch labels that aren't constants. |
| 2970 | 154 static void |
| 155 maybe_warn_variable_switch_label (tree_expression *expr); | |
| 2764 | 156 |
| 1623 | 157 // Finish building a range. |
| 2970 | 158 static tree_expression * |
| 159 finish_colon_expression (tree_colon_expression *e); | |
| 1623 | 160 |
| 1607 | 161 // Build a constant. |
| 2970 | 162 static tree_constant * |
| 163 make_constant (int op, token *tok_val); | |
| 1607 | 164 |
| 4342 | 165 // Build a function handle. |
| 166 static tree_fcn_handle * | |
| 167 make_fcn_handle (token *tok_val); | |
| 168 | |
| 4935 | 169 // Build an anonymous function handle. |
| 5861 | 170 static tree_anon_fcn_handle * |
| 4935 | 171 make_anon_fcn_handle (tree_parameter_list *param_list, tree_statement *stmt); |
| 172 | |
| 578 | 173 // Build a binary expression. |
| 2970 | 174 static tree_expression * |
| 175 make_binary_op (int op, tree_expression *op1, token *tok_val, | |
| 176 tree_expression *op2); | |
| 578 | 177 |
| 2375 | 178 // Build a boolean expression. |
| 2970 | 179 static tree_expression * |
| 180 make_boolean_op (int op, tree_expression *op1, token *tok_val, | |
| 181 tree_expression *op2); | |
| 2375 | 182 |
| 578 | 183 // Build a prefix expression. |
| 2970 | 184 static tree_expression * |
| 185 make_prefix_op (int op, tree_expression *op1, token *tok_val); | |
| 578 | 186 |
| 187 // Build a postfix expression. | |
| 2970 | 188 static tree_expression * |
| 189 make_postfix_op (int op, tree_expression *op1, token *tok_val); | |
| 578 | 190 |
| 1623 | 191 // Build an unwind-protect command. |
| 2970 | 192 static tree_command * |
| 193 make_unwind_command (token *unwind_tok, tree_statement_list *body, | |
| 3665 | 194 tree_statement_list *cleanup, token *end_tok, |
| 195 octave_comment_list *lc, octave_comment_list *mc); | |
| 1623 | 196 |
| 197 // Build a try-catch command. | |
| 2970 | 198 static tree_command * |
| 199 make_try_command (token *try_tok, tree_statement_list *body, | |
| 3665 | 200 tree_statement_list *cleanup, token *end_tok, |
| 201 octave_comment_list *lc, octave_comment_list *mc); | |
| 1623 | 202 |
| 203 // Build a while command. | |
| 2970 | 204 static tree_command * |
| 205 make_while_command (token *while_tok, tree_expression *expr, | |
| 3665 | 206 tree_statement_list *body, token *end_tok, |
| 207 octave_comment_list *lc); | |
| 1623 | 208 |
| 3484 | 209 // Build a do-until command. |
| 210 static tree_command * | |
| 211 make_do_until_command (token *do_tok, tree_statement_list *body, | |
| 3665 | 212 tree_expression *expr, octave_comment_list *lc); |
| 3484 | 213 |
| 1623 | 214 // Build a for command. |
| 2970 | 215 static tree_command * |
| 216 make_for_command (token *for_tok, tree_argument_list *lhs, | |
| 217 tree_expression *expr, tree_statement_list *body, | |
| 3665 | 218 token *end_tok, octave_comment_list *lc); |
| 1623 | 219 |
| 4207 | 220 // Build a break command. |
| 221 static tree_command * | |
| 222 make_break_command (token *break_tok); | |
| 223 | |
| 224 // Build a continue command. | |
| 225 static tree_command * | |
| 226 make_continue_command (token *continue_tok); | |
| 227 | |
| 228 // Build a return command. | |
| 229 static tree_command * | |
| 230 make_return_command (token *return_tok); | |
| 1623 | 231 |
| 232 // Start an if command. | |
| 2970 | 233 static tree_if_command_list * |
| 234 start_if_command (tree_expression *expr, tree_statement_list *list); | |
| 1623 | 235 |
| 236 // Finish an if command. | |
| 2970 | 237 static tree_if_command * |
| 3665 | 238 finish_if_command (token *if_tok, tree_if_command_list *list, |
| 239 token *end_tok, octave_comment_list *lc); | |
| 1623 | 240 |
| 241 // Build an elseif clause. | |
| 2970 | 242 static tree_if_clause * |
| 3665 | 243 make_elseif_clause (tree_expression *expr, tree_statement_list *list, |
| 244 octave_comment_list *lc); | |
| 1623 | 245 |
| 2764 | 246 // Finish a switch command. |
| 2970 | 247 static tree_switch_command * |
| 248 finish_switch_command (token *switch_tok, tree_expression *expr, | |
| 3665 | 249 tree_switch_case_list *list, token *end_tok, |
| 250 octave_comment_list *lc); | |
| 2764 | 251 |
| 252 // Build a switch case. | |
| 2970 | 253 static tree_switch_case * |
| 3665 | 254 make_switch_case (tree_expression *expr, tree_statement_list *list, |
| 255 octave_comment_list *lc); | |
| 2764 | 256 |
| 1623 | 257 // Build an assignment to a variable. |
| 2970 | 258 static tree_expression * |
| 259 make_assign_op (int op, tree_argument_list *lhs, token *eq_tok, | |
| 260 tree_expression *rhs); | |
| 1623 | 261 |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
262 // Define a script. |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
263 static void |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
264 make_script (tree_statement_list *cmds); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
265 |
| 1623 | 266 // Begin defining a function. |
| 2970 | 267 static octave_user_function * |
| 268 start_function (tree_parameter_list *param_list, tree_statement_list *body); | |
| 1623 | 269 |
| 270 // Do most of the work for defining a function. | |
| 2970 | 271 static octave_user_function * |
| 4872 | 272 frob_function (const std::string& fname, octave_user_function *fcn); |
| 1623 | 273 |
| 274 // Finish defining a function. | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
275 static tree_function_def * |
| 3665 | 276 finish_function (tree_parameter_list *ret_list, |
| 277 octave_user_function *fcn, octave_comment_list *lc); | |
| 751 | 278 |
| 2883 | 279 // Reset state after parsing function. |
| 2970 | 280 static void |
| 281 recover_from_parsing_function (void); | |
| 2883 | 282 |
| 751 | 283 // Make an index expression. |
| 2970 | 284 static tree_index_expression * |
| 3933 | 285 make_index_expression (tree_expression *expr, |
| 286 tree_argument_list *args, char type); | |
| 2970 | 287 |
| 288 // Make an indirect reference expression. | |
| 3930 | 289 static tree_index_expression * |
| 3523 | 290 make_indirect_ref (tree_expression *expr, const std::string&); |
| 666 | 291 |
| 4131 | 292 // Make an indirect reference expression with dynamic field name. |
| 293 static tree_index_expression * | |
| 294 make_indirect_ref (tree_expression *expr, tree_expression *field); | |
| 295 | |
| 2846 | 296 // Make a declaration command. |
| 2970 | 297 static tree_decl_command * |
| 298 make_decl_command (int tok, token *tok_val, tree_decl_init_list *lst); | |
| 2846 | 299 |
| 1623 | 300 // Finish building a matrix list. |
| 2970 | 301 static tree_expression * |
| 302 finish_matrix (tree_matrix *m); | |
| 1623 | 303 |
| 3351 | 304 // Finish building a cell list. |
| 305 static tree_expression * | |
| 306 finish_cell (tree_cell *c); | |
| 307 | |
| 1511 | 308 // Maybe print a warning. Duh. |
| 2970 | 309 static void |
| 310 maybe_warn_missing_semi (tree_statement_list *); | |
| 1511 | 311 |
| 2525 | 312 // Set the print flag for a statement based on the separator type. |
| 2970 | 313 static void |
| 314 set_stmt_print_flag (tree_statement_list *, char, bool); | |
| 2525 | 315 |
| 1 | 316 #define ABORT_PARSE \ |
| 317 do \ | |
| 318 { \ | |
| 522 | 319 global_command = 0; \ |
| 1 | 320 yyerrok; \ |
| 4238 | 321 if (! symtab_context.empty ()) \ |
| 3929 | 322 { \ |
| 7336 | 323 symbol_table::set_scope (symtab_context.top ()); \ |
| 4238 | 324 symtab_context.pop (); \ |
| 3929 | 325 } \ |
| 2865 | 326 if (interactive || forced_interactive) \ |
| 1 | 327 YYACCEPT; \ |
| 328 else \ | |
| 329 YYABORT; \ | |
| 330 } \ | |
| 331 while (0) | |
| 332 | |
| 333 %} | |
| 334 | |
| 666 | 335 // Bison declarations. |
| 336 | |
| 4813 | 337 // Don't add spaces around the = here; it causes some versions of |
| 338 // bison to fail to properly recognize the directive. | |
| 339 | |
| 340 %name-prefix="octave_" | |
| 4753 | 341 |
| 1 | 342 %union |
| 343 { | |
| 2891 | 344 // The type of the basic tokens returned by the lexer. |
| 143 | 345 token *tok_val; |
| 346 | |
| 3665 | 347 // Comment strings that we need to deal with mid-rule. |
| 348 octave_comment_list *comment_type; | |
| 349 | |
| 2891 | 350 // Types for the nonterminals we generate. |
| 2525 | 351 char sep_type; |
| 1 | 352 tree *tree_type; |
| 1829 | 353 tree_matrix *tree_matrix_type; |
| 3351 | 354 tree_cell *tree_cell_type; |
| 496 | 355 tree_expression *tree_expression_type; |
| 2375 | 356 tree_constant *tree_constant_type; |
| 4342 | 357 tree_fcn_handle *tree_fcn_handle_type; |
| 5861 | 358 tree_anon_fcn_handle *tree_anon_fcn_handle_type; |
| 1 | 359 tree_identifier *tree_identifier_type; |
| 360 tree_index_expression *tree_index_expression_type; | |
| 361 tree_colon_expression *tree_colon_expression_type; | |
| 362 tree_argument_list *tree_argument_list_type; | |
| 363 tree_parameter_list *tree_parameter_list_type; | |
| 364 tree_command *tree_command_type; | |
| 365 tree_if_command *tree_if_command_type; | |
| 578 | 366 tree_if_clause *tree_if_clause_type; |
| 367 tree_if_command_list *tree_if_command_list_type; | |
| 2764 | 368 tree_switch_command *tree_switch_command_type; |
| 369 tree_switch_case *tree_switch_case_type; | |
| 370 tree_switch_case_list *tree_switch_case_list_type; | |
| 2846 | 371 tree_decl_elt *tree_decl_elt_type; |
| 372 tree_decl_init_list *tree_decl_init_list_type; | |
| 373 tree_decl_command *tree_decl_command_type; | |
| 578 | 374 tree_statement *tree_statement_type; |
| 375 tree_statement_list *tree_statement_list_type; | |
| 2891 | 376 octave_user_function *octave_user_function_type; |
| 1 | 377 } |
| 378 | |
| 143 | 379 // Tokens with line and column information. |
| 380 %token <tok_val> '=' ':' '-' '+' '*' '/' | |
| 4018 | 381 %token <tok_val> ADD_EQ SUB_EQ MUL_EQ DIV_EQ LEFTDIV_EQ POW_EQ |
| 382 %token <tok_val> EMUL_EQ EDIV_EQ ELEFTDIV_EQ EPOW_EQ AND_EQ OR_EQ | |
| 2899 | 383 %token <tok_val> LSHIFT_EQ RSHIFT_EQ LSHIFT RSHIFT |
| 428 | 384 %token <tok_val> EXPR_AND_AND EXPR_OR_OR |
| 143 | 385 %token <tok_val> EXPR_AND EXPR_OR EXPR_NOT |
| 386 %token <tok_val> EXPR_LT EXPR_LE EXPR_EQ EXPR_NE EXPR_GE EXPR_GT | |
| 1276 | 387 %token <tok_val> LEFTDIV EMUL EDIV ELEFTDIV EPLUS EMINUS |
| 388 %token <tok_val> QUOTE TRANSPOSE | |
| 143 | 389 %token <tok_val> PLUS_PLUS MINUS_MINUS POW EPOW |
| 390 %token <tok_val> NUM IMAG_NUM | |
| 2970 | 391 %token <tok_val> STRUCT_ELT |
| 2883 | 392 %token <tok_val> NAME |
| 143 | 393 %token <tok_val> END |
| 5279 | 394 %token <tok_val> DQ_STRING SQ_STRING |
| 3484 | 395 %token <tok_val> FOR WHILE DO UNTIL |
| 1491 | 396 %token <tok_val> IF ELSEIF ELSE |
| 2764 | 397 %token <tok_val> SWITCH CASE OTHERWISE |
| 1491 | 398 %token <tok_val> BREAK CONTINUE FUNC_RET |
| 924 | 399 %token <tok_val> UNWIND CLEANUP |
| 1489 | 400 %token <tok_val> TRY CATCH |
| 2846 | 401 %token <tok_val> GLOBAL STATIC |
| 4342 | 402 %token <tok_val> FCN_HANDLE |
| 1 | 403 |
| 143 | 404 // Other tokens. |
| 2970 | 405 %token END_OF_INPUT LEXICAL_ERROR |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
406 %token FCN SCRIPT |
|
7587
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
407 // %token VARARGIN VARARGOUT |
| 5296 | 408 %token CLOSE_BRACE |
| 1 | 409 |
| 143 | 410 // Nonterminals we construct. |
| 3665 | 411 %type <comment_type> stash_comment function_beg |
| 2525 | 412 %type <sep_type> sep_no_nl opt_sep_no_nl sep opt_sep |
| 578 | 413 %type <tree_type> input |
| 5861 | 414 %type <tree_constant_type> string constant magic_colon |
| 415 %type <tree_anon_fcn_handle_type> anon_fcn_handle | |
| 4342 | 416 %type <tree_fcn_handle_type> fcn_handle |
| 3351 | 417 %type <tree_matrix_type> matrix_rows matrix_rows1 |
| 418 %type <tree_cell_type> cell_rows cell_rows1 | |
| 5102 | 419 %type <tree_expression_type> matrix cell |
| 4207 | 420 %type <tree_expression_type> primary_expr postfix_expr prefix_expr binary_expr |
| 421 %type <tree_expression_type> simple_expr colon_expr assign_expr expression | |
| 4238 | 422 %type <tree_identifier_type> identifier fcn_name |
| 7336 | 423 %type <octave_user_function_type> function1 function2 |
| 2970 | 424 %type <tree_index_expression_type> word_list_cmd |
| 425 %type <tree_colon_expression_type> colon_expr1 | |
| 3351 | 426 %type <tree_argument_list_type> arg_list word_list assign_lhs |
| 427 %type <tree_argument_list_type> cell_or_matrix_row | |
| 4935 | 428 %type <tree_parameter_list_type> param_list param_list1 param_list2 |
| 723 | 429 %type <tree_parameter_list_type> return_list return_list1 |
| 2970 | 430 %type <tree_command_type> command select_command loop_command |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
431 %type <tree_command_type> jump_command except_command function script |
| 578 | 432 %type <tree_if_command_type> if_command |
| 433 %type <tree_if_clause_type> elseif_clause else_clause | |
| 434 %type <tree_if_command_list_type> if_cmd_list1 if_cmd_list | |
| 2764 | 435 %type <tree_switch_command_type> switch_command |
| 436 %type <tree_switch_case_type> switch_case default_case | |
| 437 %type <tree_switch_case_list_type> case_list1 case_list | |
| 2846 | 438 %type <tree_decl_elt_type> decl2 |
| 439 %type <tree_decl_init_list_type> decl1 | |
| 440 %type <tree_decl_command_type> declaration | |
| 578 | 441 %type <tree_statement_type> statement |
| 627 | 442 %type <tree_statement_list_type> simple_list simple_list1 list list1 |
| 7336 | 443 %type <tree_statement_list_type> opt_list input1 |
| 1 | 444 |
| 143 | 445 // Precedence and associativity. |
| 1 | 446 %left ';' ',' '\n' |
| 4018 | 447 %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 | 448 %left EXPR_OR_OR |
| 449 %left EXPR_AND_AND | |
| 450 %left EXPR_OR | |
| 451 %left EXPR_AND | |
| 1 | 452 %left EXPR_LT EXPR_LE EXPR_EQ EXPR_NE EXPR_GE EXPR_GT |
| 2899 | 453 %left LSHIFT RSHIFT |
| 1 | 454 %left ':' |
| 1276 | 455 %left '-' '+' EPLUS EMINUS |
| 1 | 456 %left '*' '/' LEFTDIV EMUL EDIV ELEFTDIV |
| 457 %left UNARY PLUS_PLUS MINUS_MINUS EXPR_NOT | |
| 5667 | 458 %left POW EPOW QUOTE TRANSPOSE |
| 3351 | 459 %left '(' '.' '{' |
| 1 | 460 |
| 143 | 461 // Where to start. |
| 1 | 462 %start input |
| 463 | |
| 464 %% | |
| 465 | |
| 2970 | 466 // ============================== |
| 467 // Statements and statement lists | |
| 468 // ============================== | |
| 469 | |
| 627 | 470 input : input1 |
| 1 | 471 { |
| 627 | 472 global_command = $1; |
| 1 | 473 promptflag = 1; |
| 474 YYACCEPT; | |
| 475 } | |
| 627 | 476 | simple_list parse_error |
| 1091 | 477 { ABORT_PARSE; } |
| 627 | 478 | parse_error |
| 1091 | 479 { ABORT_PARSE; } |
| 627 | 480 ; |
| 481 | |
| 482 input1 : '\n' | |
| 483 { $$ = 0; } | |
| 3883 | 484 | END_OF_INPUT |
| 485 { | |
| 486 parser_end_of_input = 1; | |
| 487 $$ = 0; | |
| 488 } | |
| 327 | 489 | simple_list |
| 627 | 490 { $$ = $1; } |
| 1 | 491 | simple_list '\n' |
| 627 | 492 { $$ = $1; } |
| 1 | 493 | simple_list END_OF_INPUT |
| 627 | 494 { $$ = $1; } |
| 495 ; | |
| 496 | |
| 2525 | 497 simple_list : simple_list1 opt_sep_no_nl |
| 1 | 498 { |
| 2525 | 499 set_stmt_print_flag ($1, $2, false); |
| 1511 | 500 $$ = $1; |
| 1 | 501 } |
| 502 ; | |
| 503 | |
| 578 | 504 simple_list1 : statement |
| 505 { $$ = new tree_statement_list ($1); } | |
| 2525 | 506 | simple_list1 sep_no_nl statement |
| 1 | 507 { |
| 2525 | 508 set_stmt_print_flag ($1, $2, false); |
| 578 | 509 $1->append ($3); |
| 1511 | 510 $$ = $1; |
| 1 | 511 } |
| 512 ; | |
| 513 | |
| 514 opt_list : // empty | |
| 578 | 515 { $$ = new tree_statement_list (); } |
| 1 | 516 | list |
| 517 { $$ = $1; } | |
| 496 | 518 ; |
| 1 | 519 |
| 2525 | 520 list : list1 opt_sep |
| 1511 | 521 { |
| 2525 | 522 set_stmt_print_flag ($1, $2, true); |
| 1829 | 523 $$ = $1; |
| 1 | 524 } |
| 525 ; | |
| 526 | |
| 578 | 527 list1 : statement |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
528 { $$ = new tree_statement_list ($1); } |
| 2525 | 529 | list1 sep statement |
| 1511 | 530 { |
| 2525 | 531 set_stmt_print_flag ($1, $2, true); |
| 578 | 532 $1->append ($3); |
| 1511 | 533 $$ = $1; |
| 1 | 534 } |
| 535 ; | |
| 536 | |
| 2970 | 537 statement : expression |
| 3665 | 538 { |
| 539 octave_comment_list *comment | |
| 540 = octave_comment_buffer::get_comment (); | |
| 541 | |
| 542 $$ = new tree_statement ($1, comment); | |
| 543 } | |
| 2970 | 544 | command |
| 3665 | 545 { |
| 546 octave_comment_list *comment | |
| 547 = octave_comment_buffer::get_comment (); | |
| 548 | |
| 549 $$ = new tree_statement ($1, comment); | |
| 550 } | |
| 1 | 551 ; |
| 552 | |
| 2970 | 553 // =========== |
| 554 // Expressions | |
| 555 // =========== | |
| 556 | |
| 557 identifier : NAME | |
| 558 { | |
| 7336 | 559 symbol_table::symbol_record *sr = $1->sym_rec (); |
| 560 $$ = new tree_identifier (*sr, $1->line (), $1->column ()); | |
| 2970 | 561 } |
| 562 ; | |
| 563 | |
| 5279 | 564 string : DQ_STRING |
| 565 { $$ = make_constant (DQ_STRING, $1); } | |
| 566 | SQ_STRING | |
| 567 { $$ = make_constant (SQ_STRING, $1); } | |
| 568 ; | |
| 569 | |
| 2970 | 570 constant : NUM |
| 571 { $$ = make_constant (NUM, $1); } | |
| 572 | IMAG_NUM | |
| 573 { $$ = make_constant (IMAG_NUM, $1); } | |
| 5279 | 574 | string |
| 575 { $$ = $1; } | |
| 2970 | 576 ; |
| 577 | |
| 578 matrix : '[' ']' | |
| 5615 | 579 { |
| 580 $$ = new tree_constant (octave_value (Matrix ())); | |
| 581 lexer_flags.looking_at_matrix_or_assign_lhs = false; | |
|
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
582 lexer_flags.pending_local_variables.clear (); |
| 5615 | 583 } |
| 2970 | 584 | '[' ';' ']' |
| 3203 | 585 { |
| 5615 | 586 $$ = new tree_constant (octave_value (Matrix ())); |
| 587 lexer_flags.looking_at_matrix_or_assign_lhs = false; | |
|
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
588 lexer_flags.pending_local_variables.clear (); |
| 5615 | 589 } |
| 590 | '[' matrix_rows ']' | |
| 591 { | |
| 592 $$ = finish_matrix ($2); | |
| 3203 | 593 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
|
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
594 lexer_flags.pending_local_variables.clear (); |
| 3203 | 595 } |
| 2970 | 596 ; |
| 597 | |
| 3351 | 598 matrix_rows : matrix_rows1 |
| 2970 | 599 { $$ = $1; } |
| 3351 | 600 | matrix_rows1 ';' // Ignore trailing semicolon. |
| 2970 | 601 { $$ = $1; } |
| 602 ; | |
| 603 | |
| 3351 | 604 matrix_rows1 : cell_or_matrix_row |
| 2970 | 605 { $$ = new tree_matrix ($1); } |
| 3351 | 606 | matrix_rows1 ';' cell_or_matrix_row |
| 2970 | 607 { |
| 608 $1->append ($3); | |
| 609 $$ = $1; | |
| 610 } | |
| 611 ; | |
| 612 | |
| 3351 | 613 cell : '{' '}' |
| 3928 | 614 { $$ = new tree_constant (octave_value (Cell ())); } |
| 3351 | 615 | '{' ';' '}' |
| 3928 | 616 { $$ = new tree_constant (octave_value (Cell ())); } |
| 3351 | 617 | '{' cell_rows '}' |
| 618 { $$ = finish_cell ($2); } | |
| 619 ; | |
| 620 | |
| 621 cell_rows : cell_rows1 | |
| 622 { $$ = $1; } | |
| 623 | cell_rows1 ';' // Ignore trailing semicolon. | |
| 624 { $$ = $1; } | |
| 625 ; | |
| 626 | |
| 627 cell_rows1 : cell_or_matrix_row | |
| 628 { $$ = new tree_cell ($1); } | |
| 629 | cell_rows1 ';' cell_or_matrix_row | |
| 630 { | |
| 631 $1->append ($3); | |
| 632 $$ = $1; | |
| 633 } | |
| 634 ; | |
| 635 | |
| 636 cell_or_matrix_row | |
| 637 : arg_list | |
| 2970 | 638 { $$ = $1; } |
| 639 | arg_list ',' // Ignore trailing comma. | |
| 640 { $$ = $1; } | |
| 641 ; | |
| 642 | |
| 4930 | 643 fcn_handle : '@' FCN_HANDLE |
| 644 { | |
| 645 $$ = make_fcn_handle ($2); | |
| 646 lexer_flags.looking_at_function_handle--; | |
| 647 } | |
| 648 ; | |
| 649 | |
| 4935 | 650 anon_fcn_handle : '@' param_list statement |
| 651 { $$ = make_anon_fcn_handle ($2, $3); } | |
| 4342 | 652 ; |
| 653 | |
| 2970 | 654 primary_expr : identifier |
| 655 { $$ = $1; } | |
| 656 | constant | |
| 657 { $$ = $1; } | |
| 4342 | 658 | fcn_handle |
| 659 { $$ = $1; } | |
| 2970 | 660 | matrix |
| 661 { $$ = $1; } | |
| 3351 | 662 | cell |
| 663 { $$ = $1; } | |
| 2970 | 664 | '(' expression ')' |
| 665 { $$ = $2->mark_in_parens (); } | |
| 666 ; | |
| 667 | |
| 668 magic_colon : ':' | |
| 669 { | |
| 670 octave_value tmp (octave_value::magic_colon_t); | |
| 671 $$ = new tree_constant (tmp); | |
| 672 } | |
| 673 ; | |
| 674 | |
| 675 arg_list : expression | |
| 676 { $$ = new tree_argument_list ($1); } | |
| 677 | magic_colon | |
| 678 { $$ = new tree_argument_list ($1); } | |
| 679 | arg_list ',' magic_colon | |
| 680 { | |
| 681 $1->append ($3); | |
| 682 $$ = $1; | |
| 683 } | |
| 684 | arg_list ',' expression | |
| 685 { | |
| 686 $1->append ($3); | |
| 687 $$ = $1; | |
| 688 } | |
| 689 ; | |
| 690 | |
| 4131 | 691 indirect_ref_op : '.' |
| 2970 | 692 { lexer_flags.looking_at_indirect_ref = true; } |
| 693 ; | |
| 694 | |
| 4615 | 695 // Two more rules for lexical feedback. To avoid reduce/reduce |
| 696 // conflicts, We use begin_obj_idx after every postfix_expr on the RHS | |
| 697 // of a rule, then cancel that as soon as possible for cases when we | |
| 698 // are not actually parsing an index expression. Since all of those | |
| 699 // cases are simple tokens that don't involve examining the value of | |
| 700 // lexer_flags.looking_at_object_index, I think we should be OK. | |
| 701 | |
| 4234 | 702 begin_obj_idx : // empty |
| 4237 | 703 { lexer_flags.looking_at_object_index++; } |
| 4234 | 704 ; |
| 705 | |
| 4615 | 706 cancel_obj_idx : // empty |
| 707 { lexer_flags.looking_at_object_index--; } | |
| 708 ; | |
| 709 | |
| 2970 | 710 postfix_expr : primary_expr |
| 711 { $$ = $1; } | |
| 4613 | 712 | postfix_expr begin_obj_idx '(' ')' |
| 4236 | 713 { |
| 714 $$ = make_index_expression ($1, 0, '('); | |
| 4237 | 715 lexer_flags.looking_at_object_index--; |
| 4236 | 716 } |
| 4613 | 717 | postfix_expr begin_obj_idx '(' arg_list ')' |
| 4234 | 718 { |
| 719 $$ = make_index_expression ($1, $4, '('); | |
| 4237 | 720 lexer_flags.looking_at_object_index--; |
| 4234 | 721 } |
| 4613 | 722 | postfix_expr begin_obj_idx '{' '}' |
| 4236 | 723 { |
| 724 $$ = make_index_expression ($1, 0, '{'); | |
| 4237 | 725 lexer_flags.looking_at_object_index--; |
| 4236 | 726 } |
| 4613 | 727 | postfix_expr begin_obj_idx '{' arg_list '}' |
| 4234 | 728 { |
| 729 $$ = make_index_expression ($1, $4, '{'); | |
| 4237 | 730 lexer_flags.looking_at_object_index--; |
| 4234 | 731 } |
| 4615 | 732 | postfix_expr begin_obj_idx PLUS_PLUS cancel_obj_idx |
| 733 { $$ = make_postfix_op (PLUS_PLUS, $1, $3); } | |
| 734 | postfix_expr begin_obj_idx MINUS_MINUS cancel_obj_idx | |
| 735 { $$ = make_postfix_op (MINUS_MINUS, $1, $3); } | |
| 736 | postfix_expr begin_obj_idx QUOTE cancel_obj_idx | |
| 737 { $$ = make_postfix_op (QUOTE, $1, $3); } | |
| 738 | postfix_expr begin_obj_idx TRANSPOSE cancel_obj_idx | |
| 739 { $$ = make_postfix_op (TRANSPOSE, $1, $3); } | |
| 740 | postfix_expr begin_obj_idx indirect_ref_op cancel_obj_idx STRUCT_ELT | |
| 741 { $$ = make_indirect_ref ($1, $5->text ()); } | |
| 742 | postfix_expr begin_obj_idx indirect_ref_op cancel_obj_idx '(' expression ')' | |
| 743 { $$ = make_indirect_ref ($1, $6); } | |
| 2970 | 744 ; |
| 745 | |
| 4615 | 746 prefix_expr : postfix_expr begin_obj_idx cancel_obj_idx |
| 2970 | 747 { $$ = $1; } |
| 3178 | 748 | binary_expr |
| 749 { $$ = $1; } | |
| 2970 | 750 | PLUS_PLUS prefix_expr %prec UNARY |
| 751 { $$ = make_prefix_op (PLUS_PLUS, $2, $1); } | |
| 752 | MINUS_MINUS prefix_expr %prec UNARY | |
| 753 { $$ = make_prefix_op (MINUS_MINUS, $2, $1); } | |
| 754 | EXPR_NOT prefix_expr %prec UNARY | |
| 755 { $$ = make_prefix_op (EXPR_NOT, $2, $1); } | |
| 756 | '+' prefix_expr %prec UNARY | |
| 4965 | 757 { $$ = make_prefix_op ('+', $2, $1); } |
| 2970 | 758 | '-' prefix_expr %prec UNARY |
| 759 { $$ = make_prefix_op ('-', $2, $1); } | |
| 760 ; | |
| 761 | |
| 3178 | 762 binary_expr : prefix_expr POW prefix_expr |
| 2970 | 763 { $$ = make_binary_op (POW, $1, $2, $3); } |
| 3178 | 764 | prefix_expr EPOW prefix_expr |
| 2970 | 765 { $$ = make_binary_op (EPOW, $1, $2, $3); } |
| 3178 | 766 | prefix_expr '+' prefix_expr |
| 2970 | 767 { $$ = make_binary_op ('+', $1, $2, $3); } |
| 3178 | 768 | prefix_expr '-' prefix_expr |
| 2970 | 769 { $$ = make_binary_op ('-', $1, $2, $3); } |
| 3178 | 770 | prefix_expr '*' prefix_expr |
| 2970 | 771 { $$ = make_binary_op ('*', $1, $2, $3); } |
| 3178 | 772 | prefix_expr '/' prefix_expr |
| 2970 | 773 { $$ = make_binary_op ('/', $1, $2, $3); } |
| 3178 | 774 | prefix_expr EPLUS prefix_expr |
| 2970 | 775 { $$ = make_binary_op ('+', $1, $2, $3); } |
| 3178 | 776 | prefix_expr EMINUS prefix_expr |
| 2970 | 777 { $$ = make_binary_op ('-', $1, $2, $3); } |
| 3178 | 778 | prefix_expr EMUL prefix_expr |
| 2970 | 779 { $$ = make_binary_op (EMUL, $1, $2, $3); } |
| 3178 | 780 | prefix_expr EDIV prefix_expr |
| 2970 | 781 { $$ = make_binary_op (EDIV, $1, $2, $3); } |
| 3178 | 782 | prefix_expr LEFTDIV prefix_expr |
| 2970 | 783 { $$ = make_binary_op (LEFTDIV, $1, $2, $3); } |
| 3178 | 784 | prefix_expr ELEFTDIV prefix_expr |
| 2970 | 785 { $$ = make_binary_op (ELEFTDIV, $1, $2, $3); } |
| 786 ; | |
| 787 | |
| 788 colon_expr : colon_expr1 | |
| 789 { $$ = finish_colon_expression ($1); } | |
| 790 ; | |
| 791 | |
| 3178 | 792 colon_expr1 : prefix_expr |
| 2970 | 793 { $$ = new tree_colon_expression ($1); } |
| 3178 | 794 | colon_expr1 ':' prefix_expr |
| 2970 | 795 { |
| 796 if (! ($$ = $1->append ($3))) | |
| 797 ABORT_PARSE; | |
| 798 } | |
| 799 ; | |
| 800 | |
| 801 simple_expr : colon_expr | |
| 802 { $$ = $1; } | |
| 803 | simple_expr LSHIFT simple_expr | |
| 804 { $$ = make_binary_op (LSHIFT, $1, $2, $3); } | |
| 805 | simple_expr RSHIFT simple_expr | |
| 806 { $$ = make_binary_op (RSHIFT, $1, $2, $3); } | |
| 807 | simple_expr EXPR_LT simple_expr | |
| 808 { $$ = make_binary_op (EXPR_LT, $1, $2, $3); } | |
| 809 | simple_expr EXPR_LE simple_expr | |
| 810 { $$ = make_binary_op (EXPR_LE, $1, $2, $3); } | |
| 811 | simple_expr EXPR_EQ simple_expr | |
| 812 { $$ = make_binary_op (EXPR_EQ, $1, $2, $3); } | |
| 813 | simple_expr EXPR_GE simple_expr | |
| 814 { $$ = make_binary_op (EXPR_GE, $1, $2, $3); } | |
| 815 | simple_expr EXPR_GT simple_expr | |
| 816 { $$ = make_binary_op (EXPR_GT, $1, $2, $3); } | |
| 817 | simple_expr EXPR_NE simple_expr | |
| 818 { $$ = make_binary_op (EXPR_NE, $1, $2, $3); } | |
| 819 | simple_expr EXPR_AND simple_expr | |
| 820 { $$ = make_binary_op (EXPR_AND, $1, $2, $3); } | |
| 821 | simple_expr EXPR_OR simple_expr | |
| 822 { $$ = make_binary_op (EXPR_OR, $1, $2, $3); } | |
| 823 | simple_expr EXPR_AND_AND simple_expr | |
| 824 { $$ = make_boolean_op (EXPR_AND_AND, $1, $2, $3); } | |
| 825 | simple_expr EXPR_OR_OR simple_expr | |
| 826 { $$ = make_boolean_op (EXPR_OR_OR, $1, $2, $3); } | |
| 827 ; | |
| 828 | |
| 829 // Arrange for the lexer to return CLOSE_BRACE for `]' by looking ahead | |
| 830 // one token for an assignment op. | |
| 831 | |
| 832 assign_lhs : simple_expr | |
| 5841 | 833 { |
| 834 $$ = new tree_argument_list ($1); | |
| 835 $$->mark_as_simple_assign_lhs (); | |
| 836 } | |
| 5615 | 837 | '[' arg_list CLOSE_BRACE |
| 3189 | 838 { |
| 5615 | 839 $$ = $2; |
| 3189 | 840 lexer_flags.looking_at_matrix_or_assign_lhs = false; |
|
8001
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
841 for (std::set<std::string>::const_iterator p = lexer_flags.pending_local_variables.begin (); |
|
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
842 p != lexer_flags.pending_local_variables.end (); |
|
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
843 p++) |
|
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
844 { |
|
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
845 force_local_variable (*p); |
|
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
846 } |
|
ff9e7873f8ea
improve handling of command-style names in matrix_or_assign_lhs context
John W. Eaton <jwe@octave.org>
parents:
7968
diff
changeset
|
847 lexer_flags.pending_local_variables.clear (); |
| 3189 | 848 } |
| 2970 | 849 ; |
| 850 | |
| 851 assign_expr : assign_lhs '=' expression | |
| 852 { $$ = make_assign_op ('=', $1, $2, $3); } | |
| 853 | assign_lhs ADD_EQ expression | |
| 854 { $$ = make_assign_op (ADD_EQ, $1, $2, $3); } | |
| 855 | assign_lhs SUB_EQ expression | |
| 856 { $$ = make_assign_op (SUB_EQ, $1, $2, $3); } | |
| 857 | assign_lhs MUL_EQ expression | |
| 858 { $$ = make_assign_op (MUL_EQ, $1, $2, $3); } | |
| 859 | assign_lhs DIV_EQ expression | |
| 860 { $$ = make_assign_op (DIV_EQ, $1, $2, $3); } | |
| 3204 | 861 | assign_lhs LEFTDIV_EQ expression |
| 862 { $$ = make_assign_op (LEFTDIV_EQ, $1, $2, $3); } | |
| 4018 | 863 | assign_lhs POW_EQ expression |
| 864 { $$ = make_assign_op (POW_EQ, $1, $2, $3); } | |
| 2970 | 865 | assign_lhs LSHIFT_EQ expression |
| 866 { $$ = make_assign_op (LSHIFT_EQ, $1, $2, $3); } | |
| 867 | assign_lhs RSHIFT_EQ expression | |
| 868 { $$ = make_assign_op (RSHIFT_EQ, $1, $2, $3); } | |
| 869 | assign_lhs EMUL_EQ expression | |
| 870 { $$ = make_assign_op (EMUL_EQ, $1, $2, $3); } | |
| 871 | assign_lhs EDIV_EQ expression | |
| 872 { $$ = make_assign_op (EDIV_EQ, $1, $2, $3); } | |
| 3204 | 873 | assign_lhs ELEFTDIV_EQ expression |
| 874 { $$ = make_assign_op (ELEFTDIV_EQ, $1, $2, $3); } | |
| 4018 | 875 | assign_lhs EPOW_EQ expression |
| 876 { $$ = make_assign_op (EPOW_EQ, $1, $2, $3); } | |
| 2970 | 877 | assign_lhs AND_EQ expression |
| 878 { $$ = make_assign_op (AND_EQ, $1, $2, $3); } | |
| 879 | assign_lhs OR_EQ expression | |
| 880 { $$ = make_assign_op (OR_EQ, $1, $2, $3); } | |
| 881 ; | |
| 882 | |
| 883 word_list_cmd : identifier word_list | |
| 3933 | 884 { $$ = make_index_expression ($1, $2, '('); } |
| 2970 | 885 ; |
| 886 | |
| 5279 | 887 word_list : string |
| 888 { $$ = new tree_argument_list ($1); } | |
| 889 | word_list string | |
| 2970 | 890 { |
| 5279 | 891 $1->append ($2); |
| 2970 | 892 $$ = $1; |
| 893 } | |
| 894 ; | |
| 895 | |
| 896 expression : simple_expr | |
| 897 { $$ = $1; } | |
| 898 | word_list_cmd | |
| 899 { $$ = $1; } | |
| 900 | assign_expr | |
| 901 { $$ = $1; } | |
| 4935 | 902 | anon_fcn_handle |
| 903 { $$ = $1; } | |
| 2970 | 904 ; |
| 905 | |
| 906 // ================================================ | |
| 907 // Commands, declarations, and function definitions | |
| 908 // ================================================ | |
| 909 | |
| 910 command : declaration | |
| 911 { $$ = $1; } | |
| 912 | select_command | |
| 913 { $$ = $1; } | |
| 914 | loop_command | |
| 915 { $$ = $1; } | |
| 4207 | 916 | jump_command |
| 917 { $$ = $1; } | |
| 2970 | 918 | except_command |
| 919 { $$ = $1; } | |
| 920 | function | |
| 921 { $$ = $1; } | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
922 | script |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
923 { $$ = $1; } |
| 2970 | 924 ; |
| 925 | |
| 926 // ===================== | |
| 927 // Declaration statemnts | |
| 928 // ===================== | |
| 929 | |
| 930 declaration : GLOBAL decl1 | |
| 931 { $$ = make_decl_command (GLOBAL, $1, $2); } | |
| 932 | STATIC decl1 | |
| 933 { $$ = make_decl_command (STATIC, $1, $2); } | |
| 934 ; | |
| 935 | |
| 936 decl1 : decl2 | |
| 937 { $$ = new tree_decl_init_list ($1); } | |
| 938 | decl1 decl2 | |
| 939 { | |
| 940 $1->append ($2); | |
| 941 $$ = $1; | |
| 942 } | |
| 943 ; | |
| 944 | |
|
7634
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
945 decl_param_init : // empty |
|
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
946 { lexer_flags.looking_at_initializer_expression = true; } |
|
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
947 |
| 2970 | 948 decl2 : identifier |
| 949 { $$ = new tree_decl_elt ($1); } | |
|
7634
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
950 | identifier '=' decl_param_init expression |
|
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
951 { |
|
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
952 lexer_flags.looking_at_initializer_expression = false; |
|
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
953 $$ = new tree_decl_elt ($1, $4); |
|
ae90e05ad299
fix parameter list initializer bug
John W. Eaton <jwe@octave.org>
parents:
7587
diff
changeset
|
954 } |
| 2970 | 955 ; |
| 956 | |
| 957 // ==================== | |
| 958 // Selection statements | |
| 959 // ==================== | |
| 960 | |
| 961 select_command : if_command | |
| 962 { $$ = $1; } | |
| 963 | switch_command | |
| 964 { $$ = $1; } | |
| 965 ; | |
| 966 | |
| 967 // ============ | |
| 968 // If statement | |
| 969 // ============ | |
| 970 | |
| 3665 | 971 if_command : IF stash_comment if_cmd_list END |
| 2970 | 972 { |
| 3665 | 973 if (! ($$ = finish_if_command ($1, $3, $4, $2))) |
| 2970 | 974 ABORT_PARSE; |
| 975 } | |
| 976 ; | |
| 977 | |
| 978 if_cmd_list : if_cmd_list1 | |
| 979 { $$ = $1; } | |
| 980 | if_cmd_list1 else_clause | |
| 981 { | |
| 982 $1->append ($2); | |
| 983 $$ = $1; | |
| 984 } | |
| 985 ; | |
| 986 | |
| 987 if_cmd_list1 : expression opt_sep opt_list | |
| 988 { $$ = start_if_command ($1, $3); } | |
| 989 | if_cmd_list1 elseif_clause | |
| 990 { | |
| 991 $1->append ($2); | |
| 992 $$ = $1; | |
| 993 } | |
| 994 ; | |
| 995 | |
| 3665 | 996 elseif_clause : ELSEIF stash_comment opt_sep expression opt_sep opt_list |
| 997 { $$ = make_elseif_clause ($4, $6, $2); } | |
| 2970 | 998 ; |
| 999 | |
| 3665 | 1000 else_clause : ELSE stash_comment opt_sep opt_list |
| 1001 { | |
| 1002 $$ = new tree_if_clause ($4, $2); | |
| 1003 } | |
| 2970 | 1004 ; |
| 1005 | |
| 1006 // ================ | |
| 1007 // Switch statement | |
| 1008 // ================ | |
| 1009 | |
| 3665 | 1010 switch_command : SWITCH stash_comment expression opt_sep case_list END |
| 2970 | 1011 { |
| 3665 | 1012 if (! ($$ = finish_switch_command ($1, $3, $5, $6, $2))) |
| 2970 | 1013 ABORT_PARSE; |
| 1014 } | |
| 1015 ; | |
| 1016 | |
| 4044 | 1017 case_list : // empty |
| 1018 { $$ = new tree_switch_case_list (); } | |
| 1019 | case_list1 | |
| 2970 | 1020 { $$ = $1; } |
| 1021 | case_list1 default_case | |
| 1022 { | |
| 1023 $1->append ($2); | |
| 1024 $$ = $1; | |
| 1025 } | |
| 1026 ; | |
| 1027 | |
| 1028 case_list1 : switch_case | |
| 1029 { $$ = new tree_switch_case_list ($1); } | |
| 1030 | case_list1 switch_case | |
| 1031 { | |
| 1032 $1->append ($2); | |
| 1033 $$ = $1; | |
| 1034 } | |
| 1035 ; | |
| 1036 | |
| 4025 | 1037 switch_case : CASE stash_comment opt_sep expression opt_sep opt_list |
| 3665 | 1038 { $$ = make_switch_case ($4, $6, $2); } |
| 2970 | 1039 ; |
| 1040 | |
| 3665 | 1041 default_case : OTHERWISE stash_comment opt_sep opt_list |
| 1042 { | |
| 1043 $$ = new tree_switch_case ($4, $2); | |
| 1044 } | |
| 2970 | 1045 ; |
| 1046 | |
| 1047 // ======= | |
| 1048 // Looping | |
| 1049 // ======= | |
| 1050 | |
| 3665 | 1051 loop_command : WHILE stash_comment expression opt_sep opt_list END |
| 2970 | 1052 { |
| 3665 | 1053 if (! ($$ = make_while_command ($1, $3, $5, $6, $2))) |
| 2970 | 1054 ABORT_PARSE; |
| 1055 } | |
| 3665 | 1056 | DO stash_comment opt_sep opt_list UNTIL expression |
| 3484 | 1057 { |
| 3665 | 1058 if (! ($$ = make_do_until_command ($1, $4, $6, $2))) |
| 3484 | 1059 ABORT_PARSE; |
| 1060 } | |
| 3665 | 1061 | FOR stash_comment assign_lhs '=' expression opt_sep opt_list END |
| 2970 | 1062 { |
| 3665 | 1063 if (! ($$ = make_for_command ($1, $3, $5, $7, $8, $2))) |
| 2970 | 1064 ABORT_PARSE; |
| 1065 } | |
| 5127 | 1066 | FOR stash_comment '(' assign_lhs '=' expression ')' opt_sep opt_list END |
| 1067 { | |
| 1068 if (! ($$ = make_for_command ($1, $4, $6, $9, $10, $2))) | |
| 1069 ABORT_PARSE; | |
| 1070 } | |
| 2970 | 1071 ; |
| 1072 | |
| 1073 // ======= | |
| 1074 // Jumping | |
| 1075 // ======= | |
| 1076 | |
| 4207 | 1077 jump_command : BREAK |
| 2970 | 1078 { |
| 4207 | 1079 if (! ($$ = make_break_command ($1))) |
| 2970 | 1080 ABORT_PARSE; |
| 1081 } | |
| 1082 | CONTINUE | |
| 1083 { | |
| 4207 | 1084 if (! ($$ = make_continue_command ($1))) |
| 2970 | 1085 ABORT_PARSE; |
| 1086 } | |
| 1087 | FUNC_RET | |
| 1088 { | |
| 4207 | 1089 if (! ($$ = make_return_command ($1))) |
| 2970 | 1090 ABORT_PARSE; |
| 1091 } | |
| 1092 ; | |
| 1093 | |
| 1094 // ========== | |
| 1095 // Exceptions | |
| 1096 // ========== | |
| 1097 | |
| 3665 | 1098 except_command : UNWIND stash_comment opt_sep opt_list CLEANUP |
| 1099 stash_comment opt_sep opt_list END | |
| 2970 | 1100 { |
| 3665 | 1101 if (! ($$ = make_unwind_command ($1, $4, $8, $9, $2, $6))) |
| 2970 | 1102 ABORT_PARSE; |
| 1103 } | |
| 3665 | 1104 | TRY stash_comment opt_sep opt_list CATCH |
| 1105 stash_comment opt_sep opt_list END | |
| 2970 | 1106 { |
| 3665 | 1107 if (! ($$ = make_try_command ($1, $4, $8, $9, $2, $6))) |
| 2970 | 1108 ABORT_PARSE; |
| 1109 } | |
| 5344 | 1110 | TRY stash_comment opt_sep opt_list END |
| 1111 { | |
| 1112 if (! ($$ = make_try_command ($1, $4, 0, $5, $2, 0))) | |
| 1113 ABORT_PARSE; | |
| 1114 } | |
| 2970 | 1115 ; |
| 1116 | |
| 1117 // =========================================== | |
| 1118 // Some `subroutines' for function definitions | |
| 1119 // =========================================== | |
| 1120 | |
| 7336 | 1121 push_fcn_symtab : // empty |
| 1122 { | |
| 1123 symtab_context.push (symbol_table::current_scope ()); | |
| 1124 symbol_table::set_scope (symbol_table::alloc_scope ()); | |
| 1125 | |
| 1126 if (! lexer_flags.parsing_nested_function) | |
| 1127 symbol_table::set_parent_scope (symbol_table::current_scope ()); | |
| 1128 } | |
| 2970 | 1129 ; |
| 1130 | |
| 1131 // =========================== | |
| 1132 // List of function parameters | |
| 1133 // =========================== | |
| 1134 | |
| 1135 param_list_beg : '(' | |
| 4935 | 1136 { |
| 1137 lexer_flags.looking_at_parameter_list = true; | |
| 1138 | |
| 1139 if (lexer_flags.looking_at_function_handle) | |
| 1140 { | |
| 7336 | 1141 symtab_context.push (symbol_table::current_scope ()); |
| 1142 symbol_table::set_scope (symbol_table::alloc_scope ()); | |
| 4935 | 1143 lexer_flags.looking_at_function_handle--; |
| 1144 } | |
| 1145 } | |
| 2970 | 1146 ; |
| 1147 | |
| 1148 param_list_end : ')' | |
| 1149 { lexer_flags.looking_at_parameter_list = false; } | |
| 1150 ; | |
| 1151 | |
| 4935 | 1152 param_list : param_list_beg param_list1 param_list_end |
| 2970 | 1153 { |
| 1154 lexer_flags.quote_is_transpose = false; | |
| 4935 | 1155 $$ = $2; |
| 2970 | 1156 } |
| 1157 | param_list_beg error | |
| 1158 { | |
| 1159 yyerror ("invalid parameter list"); | |
| 1160 $$ = 0; | |
| 1161 ABORT_PARSE; | |
| 1162 } | |
| 4935 | 1163 ; |
| 1164 | |
| 1165 param_list1 : // empty | |
| 1166 { $$ = 0; } | |
| 1167 | param_list2 | |
| 1168 { | |
| 1169 $1->mark_as_formal_parameters (); | |
|
7587
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1170 if ($1->validate (tree_parameter_list::in)) |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1171 $$ = $1; |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1172 else |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1173 ABORT_PARSE; |
| 4935 | 1174 } |
| 1175 ; | |
| 1176 | |
| 6215 | 1177 param_list2 : decl2 |
| 4935 | 1178 { $$ = new tree_parameter_list ($1); } |
| 6215 | 1179 | param_list2 ',' decl2 |
| 4935 | 1180 { |
| 1181 $1->append ($3); | |
| 1182 $$ = $1; | |
| 2970 | 1183 } |
| 1184 ; | |
| 1185 | |
| 1186 // =================================== | |
| 1187 // List of function return value names | |
| 1188 // =================================== | |
| 1189 | |
| 7336 | 1190 return_list : '[' ']' |
| 2970 | 1191 { |
| 1192 lexer_flags.looking_at_return_list = false; | |
| 1193 $$ = new tree_parameter_list (); | |
| 1194 } | |
| 7336 | 1195 | return_list1 |
| 1196 { | |
| 1197 lexer_flags.looking_at_return_list = false; | |
|
7587
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1198 if ($1->validate (tree_parameter_list::out)) |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1199 $$ = $1; |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1200 else |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1201 ABORT_PARSE; |
| 7336 | 1202 } |
| 1203 | '[' return_list1 ']' | |
| 2970 | 1204 { |
| 1205 lexer_flags.looking_at_return_list = false; | |
|
7587
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1206 if ($2->validate (tree_parameter_list::out)) |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1207 $$ = $2; |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1208 else |
|
1f662945c2be
handle varargin and varargout without keywords
John W. Eaton <jwe@octave.org>
parents:
7562
diff
changeset
|
1209 ABORT_PARSE; |
| 2970 | 1210 } |
| 1211 ; | |
| 1212 | |
| 1213 return_list1 : identifier | |
| 6215 | 1214 { $$ = new tree_parameter_list (new tree_decl_elt ($1)); } |
| 2970 | 1215 | return_list1 ',' identifier |
| 1216 { | |
| 6215 | 1217 $1->append (new tree_decl_elt ($3)); |
| 2970 | 1218 $$ = $1; |
| 1219 } | |
| 1220 ; | |
| 1221 | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1222 // =========== |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1223 // Script file |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1224 // =========== |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1225 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1226 script : SCRIPT opt_list END_OF_INPUT |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1227 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1228 make_script ($2); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1229 $$ = 0; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1230 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1231 ; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1232 |
| 2970 | 1233 // =================== |
| 1234 // Function definition | |
| 1235 // =================== | |
| 1236 | |
| 7336 | 1237 function_beg : push_fcn_symtab FCN stash_comment |
| 1238 { $$ = $3; } | |
| 2970 | 1239 ; |
| 1240 | |
| 7336 | 1241 function : function_beg function1 |
| 2970 | 1242 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1243 $$ = finish_function (0, $2, $1); |
| 2970 | 1244 recover_from_parsing_function (); |
| 1245 } | |
| 7336 | 1246 | function_beg return_list '=' function1 |
| 2970 | 1247 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
1248 $$ = finish_function ($2, $4, $1); |
| 2970 | 1249 recover_from_parsing_function (); |
| 1250 } | |
| 1251 ; | |
| 1252 | |
| 7336 | 1253 fcn_name : identifier |
| 2970 | 1254 { |
| 4238 | 1255 std::string id_name = $1->name (); |
| 1256 | |
| 1257 if (reading_fcn_file | |
| 1258 && ! lexer_flags.parsing_nested_function) | |
| 1259 parent_function_name = (curr_fcn_file_name == id_name) | |
| 1260 ? id_name : curr_fcn_file_name; | |
| 1261 | |
| 1262 lexer_flags.parsed_function_name = true; | |
| 1263 | |
| 1264 $$ = $1; | |
| 1265 } | |
| 1266 ; | |
| 1267 | |
| 7336 | 1268 function1 : fcn_name function2 |
| 4238 | 1269 { |
| 4872 | 1270 std::string fname = $1->name (); |
| 1271 | |
| 1272 delete $1; | |
| 1273 | |
| 1274 if (! ($$ = frob_function (fname, $2))) | |
| 2970 | 1275 ABORT_PARSE; |
| 1276 } | |
| 1277 ; | |
| 1278 | |
| 7336 | 1279 function2 : param_list opt_sep opt_list function_end |
| 1280 { $$ = start_function ($1, $3); } | |
| 1281 | opt_sep opt_list function_end | |
| 1282 { $$ = start_function (0, $2); } | |
| 2970 | 1283 ; |
| 1284 | |
| 1285 function_end : END | |
| 1286 { | |
| 4238 | 1287 if (! end_token_ok ($1, token::function_end)) |
| 2970 | 1288 ABORT_PARSE; |
| 1289 } | |
| 1290 | END_OF_INPUT | |
| 1291 { | |
| 4240 | 1292 if (lexer_flags.parsing_nested_function) |
| 1293 lexer_flags.parsing_nested_function = -1; | |
| 4238 | 1294 |
| 3939 | 1295 if (! (reading_fcn_file || reading_script_file |
| 1296 || get_input_from_eval_string)) | |
| 2970 | 1297 YYABORT; |
| 1298 } | |
| 1299 ; | |
| 1300 | |
| 1301 // ============= | |
| 1302 // Miscellaneous | |
| 1303 // ============= | |
| 1304 | |
| 3665 | 1305 stash_comment : // empty |
| 1306 { $$ = octave_comment_buffer::get_comment (); } | |
| 1307 ; | |
| 1308 | |
| 2970 | 1309 parse_error : LEXICAL_ERROR |
| 1310 { yyerror ("parse error"); } | |
| 1311 | error | |
| 1 | 1312 ; |
| 1313 | |
| 2525 | 1314 sep_no_nl : ',' |
| 1315 { $$ = ','; } | |
| 1316 | ';' | |
| 1317 { $$ = ';'; } | |
| 1318 | sep_no_nl ',' | |
| 1319 { $$ = $1; } | |
| 1320 | sep_no_nl ';' | |
| 1321 { $$ = $1; } | |
| 1322 ; | |
| 1323 | |
| 1324 opt_sep_no_nl : // empty | |
| 1325 { $$ = 0; } | |
| 1326 | sep_no_nl | |
| 1327 { $$ = $1; } | |
| 1328 ; | |
| 1329 | |
| 1330 sep : ',' | |
| 1331 { $$ = ','; } | |
| 1332 | ';' | |
| 1333 { $$ = ';'; } | |
| 1334 | '\n' | |
| 1335 { $$ = '\n'; } | |
| 1336 | sep ',' | |
| 1337 { $$ = $1; } | |
| 1338 | sep ';' | |
| 1339 { $$ = $1; } | |
| 1340 | sep '\n' | |
| 1341 { $$ = $1; } | |
| 1342 ; | |
| 1343 | |
| 1344 opt_sep : // empty | |
| 1345 { $$ = 0; } | |
| 1346 | sep | |
| 1347 { $$ = $1; } | |
| 1348 ; | |
| 1349 | |
| 1 | 1350 %% |
| 1351 | |
| 666 | 1352 // Generic error messages. |
| 1353 | |
| 1 | 1354 static void |
| 2805 | 1355 yyerror (const char *s) |
| 1 | 1356 { |
| 143 | 1357 int err_col = current_input_column - 1; |
| 1 | 1358 |
| 5765 | 1359 std::ostringstream output_buf; |
| 1 | 1360 |
| 1005 | 1361 if (reading_fcn_file || reading_script_file) |
| 1362 output_buf << "parse error near line " << input_line_number | |
| 1607 | 1363 << " of file " << curr_fcn_file_full_name; |
| 1005 | 1364 else |
| 1365 output_buf << "parse error:"; | |
| 581 | 1366 |
| 1005 | 1367 if (s && strcmp (s, "parse error") != 0) |
| 1368 output_buf << "\n\n " << s; | |
| 1369 | |
| 1370 output_buf << "\n\n"; | |
| 1 | 1371 |
| 1755 | 1372 if (! current_input_line.empty ()) |
| 1 | 1373 { |
| 1755 | 1374 size_t len = current_input_line.length (); |
| 1060 | 1375 |
| 1755 | 1376 if (current_input_line[len-1] == '\n') |
| 1377 current_input_line.resize (len-1); | |
| 1005 | 1378 |
| 4051 | 1379 // Print the line, maybe with a pointer near the error token. |
| 1005 | 1380 |
| 1755 | 1381 output_buf << ">>> " << current_input_line << "\n"; |
| 1060 | 1382 |
| 1383 if (err_col == 0) | |
| 1384 err_col = len; | |
| 1385 | |
| 1386 for (int i = 0; i < err_col + 3; i++) | |
| 1387 output_buf << " "; | |
| 1388 | |
| 1389 output_buf << "^"; | |
| 1 | 1390 } |
| 1005 | 1391 |
| 5765 | 1392 output_buf << "\n"; |
| 1393 | |
| 1394 std::string msg = output_buf.str (); | |
| 1395 | |
| 1396 parse_error ("%s", msg.c_str ()); | |
| 1 | 1397 } |
| 1398 | |
| 666 | 1399 // Error mesages for mismatched end tokens. |
| 1400 | |
| 496 | 1401 static void |
| 2805 | 1402 end_error (const char *type, token::end_tok_type ettype, int l, int c) |
| 496 | 1403 { |
| 2805 | 1404 static const char *fmt |
| 1405 = "`%s' command matched by `%s' near line %d column %d"; | |
| 496 | 1406 |
| 1407 switch (ettype) | |
| 1408 { | |
| 1409 case token::simple_end: | |
| 1410 error (fmt, type, "end", l, c); | |
| 1411 break; | |
| 777 | 1412 |
| 496 | 1413 case token::for_end: |
| 1414 error (fmt, type, "endfor", l, c); | |
| 1415 break; | |
| 777 | 1416 |
| 496 | 1417 case token::function_end: |
| 1418 error (fmt, type, "endfunction", l, c); | |
| 1419 break; | |
| 777 | 1420 |
| 496 | 1421 case token::if_end: |
| 1422 error (fmt, type, "endif", l, c); | |
| 1423 break; | |
| 777 | 1424 |
| 3233 | 1425 case token::switch_end: |
| 1426 error (fmt, type, "endswitch", l, c); | |
| 1427 break; | |
| 1428 | |
| 496 | 1429 case token::while_end: |
| 1430 error (fmt, type, "endwhile", l, c); | |
| 1431 break; | |
| 777 | 1432 |
| 5400 | 1433 case token::try_catch_end: |
| 1434 error (fmt, type, "end_try_catch", l, c); | |
| 1435 break; | |
| 1436 | |
| 1371 | 1437 case token::unwind_protect_end: |
| 1438 error (fmt, type, "end_unwind_protect", l, c); | |
| 1439 break; | |
| 1440 | |
| 496 | 1441 default: |
| 1442 panic_impossible (); | |
| 1443 break; | |
| 1444 } | |
| 1445 } | |
| 1446 | |
| 666 | 1447 // Check to see that end tokens are properly matched. |
| 1448 | |
| 2857 | 1449 static bool |
| 1450 end_token_ok (token *tok, token::end_tok_type expected) | |
| 143 | 1451 { |
| 2857 | 1452 bool retval = true; |
| 1453 | |
| 143 | 1454 token::end_tok_type ettype = tok->ettype (); |
| 2857 | 1455 |
| 143 | 1456 if (ettype != expected && ettype != token::simple_end) |
| 1457 { | |
| 2857 | 1458 retval = false; |
| 1459 | |
| 143 | 1460 yyerror ("parse error"); |
| 1461 | |
| 1462 int l = tok->line (); | |
| 1463 int c = tok->column (); | |
| 1464 | |
| 1465 switch (expected) | |
| 1466 { | |
| 1467 case token::for_end: | |
| 1468 end_error ("for", ettype, l, c); | |
| 1469 break; | |
| 777 | 1470 |
| 143 | 1471 case token::function_end: |
| 1472 end_error ("function", ettype, l, c); | |
| 1473 break; | |
| 777 | 1474 |
| 143 | 1475 case token::if_end: |
| 1476 end_error ("if", ettype, l, c); | |
| 1477 break; | |
| 777 | 1478 |
| 1489 | 1479 case token::try_catch_end: |
| 1480 end_error ("try", ettype, l, c); | |
| 1481 break; | |
| 1482 | |
| 2764 | 1483 case token::switch_end: |
| 1484 end_error ("switch", ettype, l, c); | |
| 1485 break; | |
| 1486 | |
| 1489 | 1487 case token::unwind_protect_end: |
| 1488 end_error ("unwind_protect", ettype, l, c); | |
| 1489 break; | |
| 1490 | |
| 143 | 1491 case token::while_end: |
| 1492 end_error ("while", ettype, l, c); | |
| 1493 break; | |
| 777 | 1494 |
| 143 | 1495 default: |
| 1496 panic_impossible (); | |
| 1497 break; | |
| 1498 } | |
| 1499 } | |
| 2857 | 1500 |
| 1501 return retval; | |
| 143 | 1502 } |
| 1503 | |
| 666 | 1504 // Maybe print a warning if an assignment expression is used as the |
| 1505 // test in a logical expression. | |
| 1506 | |
| 496 | 1507 static void |
| 1508 maybe_warn_assign_as_truth_value (tree_expression *expr) | |
| 1 | 1509 { |
| 5781 | 1510 if (expr->is_assignment_expression () |
| 2961 | 1511 && expr->paren_count () < 2) |
| 1 | 1512 { |
| 5781 | 1513 warning_with_id |
| 1514 ("Octave:assign-as-truth-value", | |
| 1515 "suggest parenthesis around assignment used as truth value"); | |
| 1 | 1516 } |
| 1517 } | |
| 578 | 1518 |
| 2764 | 1519 // Maybe print a warning about switch labels that aren't constants. |
| 1520 | |
| 1521 static void | |
| 1522 maybe_warn_variable_switch_label (tree_expression *expr) | |
| 1523 { | |
| 5781 | 1524 if (! expr->is_constant ()) |
| 5878 | 1525 warning_with_id ("Octave:variable-switch-label", |
| 5781 | 1526 "variable switch label"); |
| 2764 | 1527 } |
| 1528 | |
| 2533 | 1529 static tree_expression * |
| 1530 fold (tree_binary_expression *e) | |
| 1531 { | |
| 3110 | 1532 tree_expression *retval = e; |
| 1533 | |
| 3292 | 1534 unwind_protect::begin_frame ("fold_binary_expression"); |
| 3110 | 1535 |
| 1536 unwind_protect_int (error_state); | |
| 4452 | 1537 unwind_protect_int (warning_state); |
| 3110 | 1538 |
| 3815 | 1539 unwind_protect_bool (discard_error_messages); |
| 4452 | 1540 unwind_protect_bool (discard_warning_messages); |
| 1541 | |
| 3815 | 1542 discard_error_messages = true; |
| 4452 | 1543 discard_warning_messages = true; |
| 2533 | 1544 |
| 1545 tree_expression *op1 = e->lhs (); | |
| 1546 tree_expression *op2 = e->rhs (); | |
| 1547 | |
| 5161 | 1548 octave_value::binary_op op_type = e->op_type (); |
| 1549 | |
| 1550 if (op1->is_constant () && op2->is_constant () | |
| 5781 | 1551 && (! ((warning_enabled ("Octave:associativity-change") |
| 5161 | 1552 && (op_type == POW || op_type == EPOW)) |
| 5781 | 1553 || (warning_enabled ("Octave:precedence-change") |
| 5161 | 1554 && (op_type == EXPR_OR || op_type == EXPR_OR_OR))))) |
| 2533 | 1555 { |
| 2970 | 1556 octave_value tmp = e->rvalue (); |
| 2533 | 1557 |
| 3489 | 1558 if (! (error_state || warning_state)) |
| 2533 | 1559 { |
| 1560 tree_constant *tc_retval = new tree_constant (tmp); | |
| 1561 | |
| 5765 | 1562 std::ostringstream buf; |
| 2533 | 1563 |
| 1564 tree_print_code tpc (buf); | |
| 1565 | |
| 1566 e->accept (tpc); | |
| 1567 | |
| 5765 | 1568 tc_retval->stash_original_text (buf.str ()); |
| 2533 | 1569 |
| 1570 delete e; | |
| 1571 | |
| 1572 retval = tc_retval; | |
| 1573 } | |
| 1574 } | |
| 3110 | 1575 |
| 3292 | 1576 unwind_protect::run_frame ("fold_binary_expression"); |
| 1577 | |
| 1578 return retval; | |
| 1579 } | |
| 1580 | |
| 1581 static tree_expression * | |
| 1582 fold (tree_unary_expression *e) | |
| 1583 { | |
| 1584 tree_expression *retval = e; | |
| 1585 | |
| 1586 unwind_protect::begin_frame ("fold_unary_expression"); | |
| 1587 | |
| 1588 unwind_protect_int (error_state); | |
| 4452 | 1589 unwind_protect_int (warning_state); |
| 3292 | 1590 |
| 3815 | 1591 unwind_protect_bool (discard_error_messages); |
| 4452 | 1592 unwind_protect_bool (discard_warning_messages); |
| 1593 | |
| 3815 | 1594 discard_error_messages = true; |
| 4452 | 1595 discard_warning_messages = true; |
| 3292 | 1596 |
| 1597 tree_expression *op = e->operand (); | |
| 1598 | |
| 1599 if (op->is_constant ()) | |
| 1600 { | |
| 1601 octave_value tmp = e->rvalue (); | |
| 1602 | |
| 3489 | 1603 if (! (error_state || warning_state)) |
| 3292 | 1604 { |
| 1605 tree_constant *tc_retval = new tree_constant (tmp); | |
| 1606 | |
| 5765 | 1607 std::ostringstream buf; |
| 3292 | 1608 |
| 1609 tree_print_code tpc (buf); | |
| 1610 | |
| 1611 e->accept (tpc); | |
| 1612 | |
| 5765 | 1613 tc_retval->stash_original_text (buf.str ()); |
| 3292 | 1614 |
| 1615 delete e; | |
| 1616 | |
| 1617 retval = tc_retval; | |
| 1618 } | |
| 1619 } | |
| 1620 | |
| 1621 unwind_protect::run_frame ("fold_unary_expression"); | |
| 2533 | 1622 |
| 1623 return retval; | |
| 1624 } | |
| 1625 | |
| 1623 | 1626 // Finish building a range. |
| 1627 | |
| 1628 static tree_expression * | |
| 1629 finish_colon_expression (tree_colon_expression *e) | |
| 1630 { | |
| 3110 | 1631 tree_expression *retval = e; |
| 1632 | |
| 1633 unwind_protect::begin_frame ("finish_colon_expression"); | |
| 1634 | |
| 1635 unwind_protect_int (error_state); | |
| 4452 | 1636 unwind_protect_int (warning_state); |
| 3110 | 1637 |
| 3815 | 1638 unwind_protect_bool (discard_error_messages); |
| 4452 | 1639 unwind_protect_bool (discard_warning_messages); |
| 1640 | |
| 3815 | 1641 discard_error_messages = true; |
| 4452 | 1642 discard_warning_messages = true; |
| 1623 | 1643 |
| 2533 | 1644 tree_expression *base = e->base (); |
| 1645 tree_expression *limit = e->limit (); | |
| 1646 tree_expression *incr = e->increment (); | |
| 1647 | |
| 2970 | 1648 if (base) |
| 1623 | 1649 { |
| 2970 | 1650 if (limit) |
| 2533 | 1651 { |
| 2970 | 1652 if (base->is_constant () && limit->is_constant () |
| 1653 && (! incr || (incr && incr->is_constant ()))) | |
| 1654 { | |
| 1655 octave_value tmp = e->rvalue (); | |
| 1656 | |
| 3489 | 1657 if (! (error_state || warning_state)) |
| 2970 | 1658 { |
| 1659 tree_constant *tc_retval = new tree_constant (tmp); | |
| 1660 | |
| 5765 | 1661 std::ostringstream buf; |
| 2970 | 1662 |
| 1663 tree_print_code tpc (buf); | |
| 1664 | |
| 1665 e->accept (tpc); | |
| 1666 | |
| 5765 | 1667 tc_retval->stash_original_text (buf.str ()); |
| 2970 | 1668 |
| 1669 delete e; | |
| 1670 | |
| 1671 retval = tc_retval; | |
| 1672 } | |
| 1673 } | |
| 2533 | 1674 } |
| 1675 else | |
| 2970 | 1676 { |
| 2990 | 1677 e->preserve_base (); |
| 1678 delete e; | |
| 2970 | 1679 |
| 5775 | 1680 // FIXME -- need to attempt constant folding here |
| 2970 | 1681 // too (we need a generic way to do that). |
| 1682 retval = base; | |
| 1683 } | |
| 1623 | 1684 } |
| 1685 | |
| 3110 | 1686 unwind_protect::run_frame ("finish_colon_expression"); |
| 1687 | |
| 1623 | 1688 return retval; |
| 1689 } | |
| 1690 | |
| 1607 | 1691 // Make a constant. |
| 1692 | |
| 2375 | 1693 static tree_constant * |
| 1607 | 1694 make_constant (int op, token *tok_val) |
| 1695 { | |
| 1696 int l = tok_val->line (); | |
| 1697 int c = tok_val->column (); | |
| 1698 | |
| 3216 | 1699 tree_constant *retval = 0; |
| 1607 | 1700 |
| 1701 switch (op) | |
| 1702 { | |
| 1703 case NUM: | |
| 2533 | 1704 { |
| 2883 | 1705 octave_value tmp (tok_val->number ()); |
| 1706 retval = new tree_constant (tmp, l, c); | |
| 2533 | 1707 retval->stash_original_text (tok_val->text_rep ()); |
| 1708 } | |
| 1607 | 1709 break; |
| 1710 | |
| 1711 case IMAG_NUM: | |
| 1712 { | |
| 2883 | 1713 octave_value tmp (Complex (0.0, tok_val->number ())); |
| 1714 retval = new tree_constant (tmp, l, c); | |
| 1607 | 1715 retval->stash_original_text (tok_val->text_rep ()); |
| 1716 } | |
| 1717 break; | |
| 1718 | |
| 5279 | 1719 case DQ_STRING: |
| 1720 case SQ_STRING: | |
| 2883 | 1721 { |
|
7699
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1722 std::string txt = tok_val->text (); |
|
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1723 |
|
7690
97e535ec65db
make_constant: stash original text for strings
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1724 char delim = op == DQ_STRING ? '"' : '\''; |
|
7699
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1725 |
|
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1726 octave_value tmp (txt, delim); |
| 2883 | 1727 retval = new tree_constant (tmp, l, c); |
|
7699
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1728 |
|
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1729 if (op == DQ_STRING) |
|
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1730 txt = undo_string_escapes (txt); |
|
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1731 |
|
7690
97e535ec65db
make_constant: stash original text for strings
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1732 // FIXME -- maybe this should also be handled by |
|
97e535ec65db
make_constant: stash original text for strings
John W. Eaton <jwe@octave.org>
parents:
7634
diff
changeset
|
1733 // tok_val->text_rep () for character strings? |
|
7699
27a5f578750c
make_constant: handle escape sequences in dq-strings
John W. Eaton <jwe@octave.org>
parents:
7690
diff
changeset
|
1734 retval->stash_original_text (delim + txt + delim); |
| 2883 | 1735 } |
| 1607 | 1736 break; |
| 1737 | |
| 1738 default: | |
| 1739 panic_impossible (); | |
| 1740 break; | |
| 1741 } | |
| 1742 | |
| 1743 return retval; | |
| 1744 } | |
| 1745 | |
| 4342 | 1746 // Make a function handle. |
| 1747 | |
| 1748 static tree_fcn_handle * | |
| 1749 make_fcn_handle (token *tok_val) | |
| 1750 { | |
| 1751 int l = tok_val->line (); | |
| 1752 int c = tok_val->column (); | |
| 1753 | |
| 1754 tree_fcn_handle *retval = new tree_fcn_handle (tok_val->text (), l, c); | |
| 1755 | |
| 1756 return retval; | |
| 1757 } | |
| 1758 | |
| 4935 | 1759 // Make an anonymous function handle. |
| 1760 | |
| 5861 | 1761 static tree_anon_fcn_handle * |
| 4935 | 1762 make_anon_fcn_handle (tree_parameter_list *param_list, tree_statement *stmt) |
| 1763 { | |
| 5775 | 1764 // FIXME -- need to get these from the location of the @ symbol. |
| 4935 | 1765 |
| 1766 int l = -1; | |
| 1767 int c = -1; | |
| 1768 | |
| 1769 tree_parameter_list *ret_list = 0; | |
| 1770 | |
| 7336 | 1771 symbol_table::scope_id fcn_scope = symbol_table::current_scope (); |
| 5861 | 1772 |
| 1773 if (symtab_context.empty ()) | |
| 1774 panic_impossible (); | |
| 1775 | |
| 7336 | 1776 symbol_table::set_scope (symtab_context.top ()); |
| 5861 | 1777 |
| 1778 symtab_context.pop (); | |
| 1779 | |
| 7351 | 1780 stmt->set_print_flag (false); |
| 4935 | 1781 |
| 1782 tree_statement_list *body = new tree_statement_list (stmt); | |
| 1783 | |
| 5861 | 1784 tree_anon_fcn_handle *retval |
| 7336 | 1785 = new tree_anon_fcn_handle (param_list, ret_list, body, fcn_scope, l, c); |
| 4935 | 1786 |
| 1787 return retval; | |
| 1788 } | |
| 1789 | |
| 5161 | 1790 static void |
| 1791 maybe_warn_associativity_change (tree_expression *op) | |
| 1792 { | |
| 5781 | 1793 if (op->paren_count () == 0 && op->is_binary_expression ()) |
| 5161 | 1794 { |
| 1795 tree_binary_expression *e | |
| 1796 = dynamic_cast<tree_binary_expression *> (op); | |
| 1797 | |
| 1798 octave_value::binary_op op_type = e->op_type (); | |
| 1799 | |
| 1800 if (op_type == octave_value::op_pow | |
| 1801 || op_type == octave_value::op_el_pow) | |
| 1802 { | |
| 1803 std::string op_str = octave_value::binary_op_as_string (op_type); | |
| 1804 | |
| 5781 | 1805 warning_with_id |
| 1806 ("Octave:associativity-change", | |
| 1807 "meaning may have changed due to change in associativity for %s operator", op_str.c_str ()); | |
| 5161 | 1808 } |
| 1809 } | |
| 1810 } | |
| 1811 | |
| 666 | 1812 // Build a binary expression. |
| 1813 | |
| 578 | 1814 static tree_expression * |
| 1815 make_binary_op (int op, tree_expression *op1, token *tok_val, | |
| 1816 tree_expression *op2) | |
| 1817 { | |
| 2883 | 1818 octave_value::binary_op t = octave_value::unknown_binary_op; |
| 1623 | 1819 |
| 578 | 1820 switch (op) |
| 1821 { | |
| 1822 case POW: | |
| 3525 | 1823 t = octave_value::op_pow; |
| 5161 | 1824 maybe_warn_associativity_change (op1); |
| 578 | 1825 break; |
| 777 | 1826 |
| 578 | 1827 case EPOW: |
| 3525 | 1828 t = octave_value::op_el_pow; |
| 5161 | 1829 maybe_warn_associativity_change (op1); |
| 578 | 1830 break; |
| 777 | 1831 |
| 578 | 1832 case '+': |
| 3525 | 1833 t = octave_value::op_add; |
| 578 | 1834 break; |
| 777 | 1835 |
| 578 | 1836 case '-': |
| 3525 | 1837 t = octave_value::op_sub; |
| 578 | 1838 break; |
| 777 | 1839 |
| 578 | 1840 case '*': |
| 3525 | 1841 t = octave_value::op_mul; |
| 578 | 1842 break; |
| 777 | 1843 |
| 578 | 1844 case '/': |
| 3525 | 1845 t = octave_value::op_div; |
| 578 | 1846 break; |
| 777 | 1847 |
| 578 | 1848 case EMUL: |
| 3525 | 1849 t = octave_value::op_el_mul; |
| 578 | 1850 break; |
| 777 | 1851 |
| 578 | 1852 case EDIV: |
| 3525 | 1853 t = octave_value::op_el_div; |
| 578 | 1854 break; |
| 777 | 1855 |
| 578 | 1856 case LEFTDIV: |
| 3525 | 1857 t = octave_value::op_ldiv; |
| 578 | 1858 break; |
| 777 | 1859 |
| 578 | 1860 case ELEFTDIV: |
| 3525 | 1861 t = octave_value::op_el_ldiv; |
| 578 | 1862 break; |
| 777 | 1863 |
| 2899 | 1864 case LSHIFT: |
| 3525 | 1865 t = octave_value::op_lshift; |
| 2899 | 1866 break; |
| 1867 | |
| 1868 case RSHIFT: | |
| 3525 | 1869 t = octave_value::op_rshift; |
| 2899 | 1870 break; |
| 1871 | |
| 578 | 1872 case EXPR_LT: |
| 3525 | 1873 t = octave_value::op_lt; |
| 578 | 1874 break; |
| 777 | 1875 |
| 578 | 1876 case EXPR_LE: |
| 3525 | 1877 t = octave_value::op_le; |
| 578 | 1878 break; |
| 777 | 1879 |
| 578 | 1880 case EXPR_EQ: |
| 3525 | 1881 t = octave_value::op_eq; |
| 578 | 1882 break; |
| 777 | 1883 |
| 578 | 1884 case EXPR_GE: |
| 3525 | 1885 t = octave_value::op_ge; |
| 578 | 1886 break; |
| 777 | 1887 |
| 578 | 1888 case EXPR_GT: |
| 3525 | 1889 t = octave_value::op_gt; |
| 578 | 1890 break; |
| 777 | 1891 |
| 578 | 1892 case EXPR_NE: |
| 3525 | 1893 t = octave_value::op_ne; |
| 578 | 1894 break; |
| 777 | 1895 |
| 578 | 1896 case EXPR_AND: |
| 3525 | 1897 t = octave_value::op_el_and; |
| 578 | 1898 break; |
| 777 | 1899 |
| 578 | 1900 case EXPR_OR: |
| 3525 | 1901 t = octave_value::op_el_or; |
| 5781 | 1902 if (op2->paren_count () == 0 && op2->is_binary_expression ()) |
| 4023 | 1903 { |
| 1904 tree_binary_expression *e | |
| 1905 = dynamic_cast<tree_binary_expression *> (op2); | |
| 1906 | |
| 1907 if (e->op_type () == octave_value::op_el_and) | |
| 5781 | 1908 warning_with_id |
| 1909 ("Octave:precedence-change", | |
| 1910 "meaning may have changed due to change in precedence for & and | operators"); | |
| 4023 | 1911 } |
| 578 | 1912 break; |
| 777 | 1913 |
| 578 | 1914 default: |
| 1915 panic_impossible (); | |
| 1916 break; | |
| 1917 } | |
| 1918 | |
| 1919 int l = tok_val->line (); | |
| 1920 int c = tok_val->column (); | |
| 1921 | |
| 2533 | 1922 tree_binary_expression *e |
|
7800
5861b95e9879
support for compound operators, implement trans_mul, mul_trans, herm_mul and mul_herm
Jaroslav Hajek <highegg@gmail.com>
parents:
7787
diff
changeset
|
1923 = maybe_compound_binary_expression (op1, op2, l, c, t); |
| 1623 | 1924 |
| 2533 | 1925 return fold (e); |
| 578 | 1926 } |
| 1927 | |
| 2375 | 1928 // Build a boolean expression. |
| 666 | 1929 |
| 578 | 1930 static tree_expression * |
| 2375 | 1931 make_boolean_op (int op, tree_expression *op1, token *tok_val, |
| 1932 tree_expression *op2) | |
| 578 | 1933 { |
| 2375 | 1934 tree_boolean_expression::type t; |
| 1935 | |
| 578 | 1936 switch (op) |
| 1937 { | |
| 2375 | 1938 case EXPR_AND_AND: |
| 2805 | 1939 t = tree_boolean_expression::bool_and; |
| 578 | 1940 break; |
| 777 | 1941 |
| 2375 | 1942 case EXPR_OR_OR: |
| 2805 | 1943 t = tree_boolean_expression::bool_or; |
| 5781 | 1944 if (op2->paren_count () == 0 && op2->is_boolean_expression ()) |
| 4023 | 1945 { |
| 1946 tree_boolean_expression *e | |
| 1947 = dynamic_cast<tree_boolean_expression *> (op2); | |
| 1948 | |
| 1949 if (e->op_type () == tree_boolean_expression::bool_and) | |
| 5781 | 1950 warning_with_id |
| 1951 ("Octave:precedence-change", | |
| 1952 "meaning may have changed due to change in precedence for && and || operators"); | |
| 4023 | 1953 } |
| 578 | 1954 break; |
| 777 | 1955 |
| 578 | 1956 default: |
| 1957 panic_impossible (); | |
| 1958 break; | |
| 1959 } | |
| 1960 | |
| 1961 int l = tok_val->line (); | |
| 1962 int c = tok_val->column (); | |
| 1963 | |
| 2533 | 1964 tree_boolean_expression *e |
| 1965 = new tree_boolean_expression (op1, op2, l, c, t); | |
| 2375 | 1966 |
| 2533 | 1967 return fold (e); |
| 578 | 1968 } |
| 1969 | |
| 2375 | 1970 // Build a prefix expression. |
| 666 | 1971 |
| 578 | 1972 static tree_expression * |
| 2960 | 1973 make_prefix_op (int op, tree_expression *op1, token *tok_val) |
| 578 | 1974 { |
| 3203 | 1975 octave_value::unary_op t = octave_value::unknown_unary_op; |
| 2375 | 1976 |
| 578 | 1977 switch (op) |
| 1978 { | |
| 2960 | 1979 case EXPR_NOT: |
| 3525 | 1980 t = octave_value::op_not; |
| 2960 | 1981 break; |
| 1982 | |
| 4965 | 1983 case '+': |
| 1984 t = octave_value::op_uplus; | |
| 1985 break; | |
| 1986 | |
| 2960 | 1987 case '-': |
| 3525 | 1988 t = octave_value::op_uminus; |
| 2960 | 1989 break; |
| 1990 | |
| 578 | 1991 case PLUS_PLUS: |
| 3525 | 1992 t = octave_value::op_incr; |
| 578 | 1993 break; |
| 777 | 1994 |
| 578 | 1995 case MINUS_MINUS: |
| 3525 | 1996 t = octave_value::op_decr; |
| 578 | 1997 break; |
| 777 | 1998 |
| 578 | 1999 default: |
| 2000 panic_impossible (); | |
| 2001 break; | |
| 2002 } | |
| 2003 | |
| 2004 int l = tok_val->line (); | |
| 2005 int c = tok_val->column (); | |
| 2006 | |
| 3292 | 2007 tree_prefix_expression *e |
| 2008 = new tree_prefix_expression (op1, l, c, t); | |
| 2009 | |
| 2010 return fold (e); | |
| 578 | 2011 } |
| 2012 | |
| 2375 | 2013 // Build a postfix expression. |
| 666 | 2014 |
| 578 | 2015 static tree_expression * |
| 2960 | 2016 make_postfix_op (int op, tree_expression *op1, token *tok_val) |
| 578 | 2017 { |
| 3203 | 2018 octave_value::unary_op t = octave_value::unknown_unary_op; |
| 1623 | 2019 |
| 578 | 2020 switch (op) |
| 2021 { | |
| 2960 | 2022 case QUOTE: |
| 3525 | 2023 t = octave_value::op_hermitian; |
| 2960 | 2024 break; |
| 2025 | |
| 2026 case TRANSPOSE: | |
| 3525 | 2027 t = octave_value::op_transpose; |
| 2960 | 2028 break; |
| 2029 | |
| 2375 | 2030 case PLUS_PLUS: |
| 3525 | 2031 t = octave_value::op_incr; |
| 578 | 2032 break; |
| 777 | 2033 |
| 2375 | 2034 case MINUS_MINUS: |
| 3525 | 2035 t = octave_value::op_decr; |
| 578 | 2036 break; |
| 777 | 2037 |
| 578 | 2038 default: |
| 2039 panic_impossible (); | |
| 2040 break; | |
| 2041 } | |
| 2042 | |
| 2043 int l = tok_val->line (); | |
| 2044 int c = tok_val->column (); | |
| 2045 | |
| 3292 | 2046 tree_postfix_expression *e |
| 2047 = new tree_postfix_expression (op1, l, c, t); | |
| 2048 | |
| 2049 return fold (e); | |
| 1623 | 2050 } |
| 2051 | |
| 2052 // Build an unwind-protect command. | |
| 2053 | |
| 2054 static tree_command * | |
| 2055 make_unwind_command (token *unwind_tok, tree_statement_list *body, | |
| 3665 | 2056 tree_statement_list *cleanup, token *end_tok, |
| 2057 octave_comment_list *lc, octave_comment_list *mc) | |
| 1623 | 2058 { |
| 2059 tree_command *retval = 0; | |
| 2060 | |
| 2857 | 2061 if (end_token_ok (end_tok, token::unwind_protect_end)) |
| 1623 | 2062 { |
| 3665 | 2063 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2064 | |
| 1623 | 2065 int l = unwind_tok->line (); |
| 2066 int c = unwind_tok->column (); | |
| 2067 | |
| 3665 | 2068 retval = new tree_unwind_protect_command (body, cleanup, |
| 2069 lc, mc, tc, l, c); | |
| 1623 | 2070 } |
| 2071 | |
| 2072 return retval; | |
| 2073 } | |
| 2074 | |
| 2075 // Build a try-catch command. | |
| 2076 | |
| 2077 static tree_command * | |
| 2078 make_try_command (token *try_tok, tree_statement_list *body, | |
| 3665 | 2079 tree_statement_list *cleanup, token *end_tok, |
| 2080 octave_comment_list *lc, octave_comment_list *mc) | |
| 1623 | 2081 { |
| 2082 tree_command *retval = 0; | |
| 2083 | |
| 2857 | 2084 if (end_token_ok (end_tok, token::try_catch_end)) |
| 1623 | 2085 { |
| 3665 | 2086 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2087 | |
| 1623 | 2088 int l = try_tok->line (); |
| 2089 int c = try_tok->column (); | |
| 2090 | |
| 3665 | 2091 retval = new tree_try_catch_command (body, cleanup, |
| 2092 lc, mc, tc, l, c); | |
| 1623 | 2093 } |
| 2094 | |
| 2095 return retval; | |
| 2096 } | |
| 2097 | |
| 2098 // Build a while command. | |
| 2099 | |
| 2100 static tree_command * | |
| 2101 make_while_command (token *while_tok, tree_expression *expr, | |
| 3665 | 2102 tree_statement_list *body, token *end_tok, |
| 2103 octave_comment_list *lc) | |
| 1623 | 2104 { |
| 2105 tree_command *retval = 0; | |
| 2106 | |
| 2107 maybe_warn_assign_as_truth_value (expr); | |
| 2108 | |
| 2857 | 2109 if (end_token_ok (end_tok, token::while_end)) |
| 1623 | 2110 { |
| 3665 | 2111 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2112 | |
| 1826 | 2113 lexer_flags.looping--; |
| 1623 | 2114 |
| 2115 int l = while_tok->line (); | |
| 2116 int c = while_tok->column (); | |
| 2117 | |
| 3665 | 2118 retval = new tree_while_command (expr, body, lc, tc, l, c); |
| 1623 | 2119 } |
| 2120 | |
| 2121 return retval; | |
| 2122 } | |
| 2123 | |
| 3484 | 2124 // Build a do-until command. |
| 2125 | |
| 2126 static tree_command * | |
| 2127 make_do_until_command (token *do_tok, tree_statement_list *body, | |
| 3665 | 2128 tree_expression *expr, octave_comment_list *lc) |
| 3484 | 2129 { |
| 2130 tree_command *retval = 0; | |
| 2131 | |
| 2132 maybe_warn_assign_as_truth_value (expr); | |
| 2133 | |
| 3665 | 2134 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2135 | |
| 3484 | 2136 lexer_flags.looping--; |
| 2137 | |
| 2138 int l = do_tok->line (); | |
| 2139 int c = do_tok->column (); | |
| 2140 | |
| 3665 | 2141 retval = new tree_do_until_command (expr, body, lc, tc, l, c); |
| 3484 | 2142 |
| 2143 return retval; | |
| 2144 } | |
| 2145 | |
| 1623 | 2146 // Build a for command. |
| 2147 | |
| 2148 static tree_command * | |
| 2970 | 2149 make_for_command (token *for_tok, tree_argument_list *lhs, |
| 1623 | 2150 tree_expression *expr, tree_statement_list *body, |
| 3665 | 2151 token *end_tok, octave_comment_list *lc) |
| 1623 | 2152 { |
| 2153 tree_command *retval = 0; | |
| 2154 | |
| 2857 | 2155 if (end_token_ok (end_tok, token::for_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 = for_tok->line (); | |
| 2162 int c = for_tok->column (); | |
| 2163 | |
| 2970 | 2164 if (lhs->length () == 1) |
| 2165 { | |
| 2166 tree_expression *tmp = lhs->remove_front (); | |
| 2167 | |
| 3665 | 2168 retval = new tree_simple_for_command (tmp, expr, body, |
| 2169 lc, tc, l, c); | |
| 2970 | 2170 |
| 2171 delete lhs; | |
| 2172 } | |
| 2173 else | |
| 3665 | 2174 retval = new tree_complex_for_command (lhs, expr, body, |
| 2175 lc, tc, l, c); | |
| 1623 | 2176 } |
| 2177 | |
| 2178 return retval; | |
| 2179 } | |
| 2180 | |
| 4207 | 2181 // Build a break command. |
| 2182 | |
| 2183 static tree_command * | |
| 2184 make_break_command (token *break_tok) | |
| 1623 | 2185 { |
| 4207 | 2186 tree_command *retval = 0; |
| 1623 | 2187 |
| 2620 | 2188 int l = break_tok->line (); |
| 2189 int c = break_tok->column (); | |
| 2190 | |
| 3489 | 2191 if (lexer_flags.looping || lexer_flags.defining_func |
| 3877 | 2192 || reading_script_file || evaluating_function_body |
| 2193 || evaluating_looping_command) | |
| 4207 | 2194 retval = new tree_break_command (l, c); |
| 1623 | 2195 else |
| 4207 | 2196 retval = new tree_no_op_command ("break", l, c); |
| 1623 | 2197 |
| 2198 return retval; | |
| 2199 } | |
| 2200 | |
| 4207 | 2201 // Build a continue command. |
| 2202 | |
| 2203 static tree_command * | |
| 2204 make_continue_command (token *continue_tok) | |
| 1623 | 2205 { |
| 4207 | 2206 tree_command *retval = 0; |
| 1623 | 2207 |
| 2620 | 2208 int l = continue_tok->line (); |
| 2209 int c = continue_tok->column (); | |
| 2210 | |
| 3877 | 2211 if (lexer_flags.looping || evaluating_looping_command) |
| 4207 | 2212 retval = new tree_continue_command (l, c); |
| 1623 | 2213 else |
| 4207 | 2214 retval = new tree_no_op_command ("continue", l, c); |
| 1623 | 2215 |
| 2216 return retval; | |
| 2217 } | |
| 2218 | |
| 4207 | 2219 // Build a return command. |
| 2220 | |
| 2221 static tree_command * | |
| 2222 make_return_command (token *return_tok) | |
| 1623 | 2223 { |
| 4207 | 2224 tree_command *retval = 0; |
| 1623 | 2225 |
| 2620 | 2226 int l = return_tok->line (); |
| 2227 int c = return_tok->column (); | |
| 2228 | |
|
7787
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2229 if (Vdebugging) |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2230 { |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2231 Vdebugging = false; |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2232 |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2233 retval = new tree_no_op_command ("return", l, c); |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2234 } |
| 1623 | 2235 else |
|
7787
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2236 { |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2237 if (lexer_flags.defining_func || reading_script_file |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2238 || evaluating_function_body) |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2239 retval = new tree_return_command (l, c); |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2240 else |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2241 retval = new tree_no_op_command ("return", l, c); |
|
6b521b1e3631
Add dbquit and make dbstep compatible. Use parser in debug mode to handle multi-line input
David Bateman <dbateman@free.fr>
parents:
7761
diff
changeset
|
2242 } |
| 1623 | 2243 |
| 2244 return retval; | |
| 2245 } | |
| 2246 | |
| 2247 // Start an if command. | |
| 2248 | |
| 2249 static tree_if_command_list * | |
| 2250 start_if_command (tree_expression *expr, tree_statement_list *list) | |
| 2251 { | |
| 2252 maybe_warn_assign_as_truth_value (expr); | |
| 2253 | |
| 2254 tree_if_clause *t = new tree_if_clause (expr, list); | |
| 2255 | |
| 2256 return new tree_if_command_list (t); | |
| 2257 } | |
| 2258 | |
| 2259 // Finish an if command. | |
| 2260 | |
| 2261 static tree_if_command * | |
| 2262 finish_if_command (token *if_tok, tree_if_command_list *list, | |
| 3665 | 2263 token *end_tok, octave_comment_list *lc) |
| 1623 | 2264 { |
| 2265 tree_if_command *retval = 0; | |
| 2266 | |
| 2857 | 2267 if (end_token_ok (end_tok, token::if_end)) |
| 1623 | 2268 { |
| 3665 | 2269 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2270 | |
| 1623 | 2271 int l = if_tok->line (); |
| 2272 int c = if_tok->column (); | |
| 2273 | |
| 3665 | 2274 retval = new tree_if_command (list, lc, tc, l, c); |
| 1623 | 2275 } |
| 2276 | |
| 2277 return retval; | |
| 2278 } | |
| 2279 | |
| 2280 // Build an elseif clause. | |
| 2281 | |
| 2282 static tree_if_clause * | |
| 3665 | 2283 make_elseif_clause (tree_expression *expr, tree_statement_list *list, |
| 2284 octave_comment_list *lc) | |
| 1623 | 2285 { |
| 2286 maybe_warn_assign_as_truth_value (expr); | |
| 2287 | |
| 3665 | 2288 return new tree_if_clause (expr, list, lc); |
| 1623 | 2289 } |
| 2290 | |
| 2764 | 2291 // Finish a switch command. |
| 2292 | |
| 2293 static tree_switch_command * | |
| 2294 finish_switch_command (token *switch_tok, tree_expression *expr, | |
| 3665 | 2295 tree_switch_case_list *list, token *end_tok, |
| 2296 octave_comment_list *lc) | |
| 2764 | 2297 { |
| 2298 tree_switch_command *retval = 0; | |
| 2299 | |
| 2857 | 2300 if (end_token_ok (end_tok, token::switch_end)) |
| 2764 | 2301 { |
| 3665 | 2302 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2303 | |
| 2764 | 2304 int l = switch_tok->line (); |
| 2305 int c = switch_tok->column (); | |
| 2306 | |
| 3665 | 2307 retval = new tree_switch_command (expr, list, lc, tc, l, c); |
| 2764 | 2308 } |
| 2309 | |
| 2310 return retval; | |
| 2311 } | |
| 2312 | |
| 2313 // Build a switch case. | |
| 2314 | |
| 2315 static tree_switch_case * | |
| 3665 | 2316 make_switch_case (tree_expression *expr, tree_statement_list *list, |
| 2317 octave_comment_list *lc) | |
| 2764 | 2318 { |
| 2319 maybe_warn_variable_switch_label (expr); | |
| 2320 | |
| 3665 | 2321 return new tree_switch_case (expr, list, lc); |
| 2764 | 2322 } |
| 2323 | |
| 1623 | 2324 // Build an assignment to a variable. |
| 2325 | |
| 2326 static tree_expression * | |
| 2970 | 2327 make_assign_op (int op, tree_argument_list *lhs, token *eq_tok, |
| 2328 tree_expression *rhs) | |
| 1623 | 2329 { |
| 2970 | 2330 tree_expression *retval = 0; |
| 2331 | |
| 2883 | 2332 octave_value::assign_op t = octave_value::unknown_assign_op; |
| 2333 | |
| 2334 switch (op) | |
| 2335 { | |
| 2336 case '=': | |
| 3525 | 2337 t = octave_value::op_asn_eq; |
| 2883 | 2338 break; |
| 2339 | |
| 2340 case ADD_EQ: | |
| 3525 | 2341 t = octave_value::op_add_eq; |
| 2883 | 2342 break; |
| 2343 | |
| 2344 case SUB_EQ: | |
| 3525 | 2345 t = octave_value::op_sub_eq; |
| 2883 | 2346 break; |
| 2347 | |
| 2348 case MUL_EQ: | |
| 3525 | 2349 t = octave_value::op_mul_eq; |
| 2883 | 2350 break; |
| 2351 | |
| 2352 case DIV_EQ: | |
| 3525 | 2353 t = octave_value::op_div_eq; |
| 2883 | 2354 break; |
| 2355 | |
| 3204 | 2356 case LEFTDIV_EQ: |
| 3525 | 2357 t = octave_value::op_ldiv_eq; |
| 3204 | 2358 break; |
| 2359 | |
| 4018 | 2360 case POW_EQ: |
| 2361 t = octave_value::op_pow_eq; | |
| 2362 break; | |
| 2363 | |
| 2899 | 2364 case LSHIFT_EQ: |
| 3525 | 2365 t = octave_value::op_lshift_eq; |
| 2899 | 2366 break; |
| 2367 | |
| 2368 case RSHIFT_EQ: | |
| 3525 | 2369 t = octave_value::op_rshift_eq; |
| 2899 | 2370 break; |
| 2371 | |
| 2883 | 2372 case EMUL_EQ: |
| 3525 | 2373 t = octave_value::op_el_mul_eq; |
| 2883 | 2374 break; |
| 2375 | |
| 2376 case EDIV_EQ: | |
| 3525 | 2377 t = octave_value::op_el_div_eq; |
| 2883 | 2378 break; |
| 2379 | |
| 3204 | 2380 case ELEFTDIV_EQ: |
| 3525 | 2381 t = octave_value::op_el_ldiv_eq; |
| 3204 | 2382 break; |
| 2383 | |
| 4018 | 2384 case EPOW_EQ: |
| 2385 t = octave_value::op_el_pow_eq; | |
| 2386 break; | |
| 2387 | |
| 2883 | 2388 case AND_EQ: |
| 3525 | 2389 t = octave_value::op_el_and_eq; |
| 2883 | 2390 break; |
| 2391 | |
| 2392 case OR_EQ: | |
| 3525 | 2393 t = octave_value::op_el_or_eq; |
| 2883 | 2394 break; |
| 2395 | |
| 2396 default: | |
| 2397 panic_impossible (); | |
| 2398 break; | |
| 2399 } | |
| 2400 | |
| 1623 | 2401 int l = eq_tok->line (); |
| 2402 int c = eq_tok->column (); | |
| 2403 | |
| 5841 | 2404 if (lhs->is_simple_assign_lhs ()) |
| 666 | 2405 { |
| 2970 | 2406 tree_expression *tmp = lhs->remove_front (); |
| 2407 | |
| 2408 retval = new tree_simple_assignment (tmp, rhs, false, l, c, t); | |
| 2409 | |
| 2410 delete lhs; | |
| 666 | 2411 } |
| 2412 else | |
| 3208 | 2413 return new tree_multi_assignment (lhs, rhs, false, l, c, t); |
| 666 | 2414 |
| 2415 return retval; | |
| 2416 } | |
| 751 | 2417 |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2418 // Define a function. |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2419 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2420 static void |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2421 make_script (tree_statement_list *cmds) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2422 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2423 std::string doc_string; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2424 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2425 if (! help_buf.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2426 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2427 doc_string = help_buf.top (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2428 help_buf.pop (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2429 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2430 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2431 octave_user_script *script |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2432 = new octave_user_script (curr_fcn_file_full_name, curr_fcn_file_name, |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2433 cmds, doc_string); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2434 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2435 octave_time now; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2436 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2437 script->stash_fcn_file_time (now); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2438 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2439 curr_fcn_ptr = script; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2440 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2441 |
| 1623 | 2442 // Begin defining a function. |
| 2443 | |
| 2891 | 2444 static octave_user_function * |
| 2445 start_function (tree_parameter_list *param_list, tree_statement_list *body) | |
| 1623 | 2446 { |
| 2891 | 2447 // We'll fill in the return list later. |
| 2448 | |
| 2449 octave_user_function *fcn | |
| 7336 | 2450 = new octave_user_function (symbol_table::current_scope (), |
| 2451 param_list, 0, body); | |
| 1623 | 2452 |
| 3665 | 2453 if (fcn) |
| 2454 { | |
| 2455 octave_comment_list *tc = octave_comment_buffer::get_comment (); | |
| 2456 | |
| 2457 fcn->stash_trailing_comment (tc); | |
| 2458 } | |
| 2459 | |
| 1623 | 2460 return fcn; |
| 2461 } | |
| 2462 | |
| 2463 // Do most of the work for defining a function. | |
| 2464 | |
| 2891 | 2465 static octave_user_function * |
| 4872 | 2466 frob_function (const std::string& fname, octave_user_function *fcn) |
| 1623 | 2467 { |
| 4872 | 2468 std::string id_name = fname; |
| 1623 | 2469 |
| 2470 // If input is coming from a file, issue a warning if the name of | |
| 2471 // the file does not match the name of the function stated in the | |
| 2472 // file. Matlab doesn't provide a diagnostic (it ignores the stated | |
| 2473 // name). | |
| 2474 | |
| 5484 | 2475 if (reading_fcn_file || autoloading) |
| 1623 | 2476 { |
| 7336 | 2477 if (! (autoloading |
| 2478 || lexer_flags.parsing_nested_function | |
| 2479 || lexer_flags.parsing_class_method)) | |
| 1623 | 2480 { |
| 7336 | 2481 // FIXME -- should curr_fcn_file_name already be |
| 2482 // preprocessed when we get here? It seems to only be a | |
| 2483 // problem with relative file names. | |
| 2484 | |
| 2485 std::string nm = curr_fcn_file_name; | |
| 2486 | |
|
8007
a2ab20ba78f7
make file_ops a proper singleton class
John W. Eaton <jwe@octave.org>
parents:
8001
diff
changeset
|
2487 size_t pos = nm.find_last_of (file_ops::dir_sep_chars ()); |
| 7336 | 2488 |
| 8021 | 2489 if (pos != std::string::npos) |
| 7336 | 2490 nm = curr_fcn_file_name.substr (pos+1); |
| 2491 | |
| 2492 if (nm != id_name) | |
| 2493 { | |
| 2494 warning_with_id | |
| 2495 ("Octave:function-name-clash", | |
| 2496 "function name `%s' does not agree with function file name `%s'", | |
| 2497 id_name.c_str (), curr_fcn_file_full_name.c_str ()); | |
| 2498 | |
| 2499 id_name = nm; | |
| 2500 } | |
| 1623 | 2501 } |
| 2502 | |
| 3712 | 2503 octave_time now; |
| 3162 | 2504 |
| 4343 | 2505 fcn->stash_fcn_file_name (curr_fcn_file_full_name); |
| 3162 | 2506 fcn->stash_fcn_file_time (now); |
| 1623 | 2507 fcn->mark_as_system_fcn_file (); |
| 3162 | 2508 |
| 6323 | 2509 if (fcn_file_from_relative_lookup) |
| 2510 fcn->mark_relative (); | |
| 2511 | |
| 2512 if (lexer_flags.parsing_nested_function) | |
|
7968
0d607e8dbbfa
eliminate curr_parent_function; fix subfunction lookup
John W. Eaton <jwe@octave.org>
parents:
7903
diff
changeset
|
2513 { |
|
0d607e8dbbfa
eliminate curr_parent_function; fix subfunction lookup
John W. Eaton <jwe@octave.org>
parents:
7903
diff
changeset
|
2514 fcn->stash_parent_fcn_name (parent_function_name); |
|
0d607e8dbbfa
eliminate curr_parent_function; fix subfunction lookup
John W. Eaton <jwe@octave.org>
parents:
7903
diff
changeset
|
2515 fcn->stash_parent_fcn_scope (symbol_table::parent_scope ()); |
|
0d607e8dbbfa
eliminate curr_parent_function; fix subfunction lookup
John W. Eaton <jwe@octave.org>
parents:
7903
diff
changeset
|
2516 } |
| 6323 | 2517 |
| 7336 | 2518 if (lexer_flags.parsing_class_method) |
| 2519 { | |
| 2520 if (current_class_name == id_name) | |
| 2521 fcn->mark_as_class_constructor (); | |
| 2522 else | |
| 2523 fcn->mark_as_class_method (); | |
| 2524 | |
| 2525 fcn->stash_dispatch_class (current_class_name); | |
| 2526 } | |
| 2527 | |
| 5781 | 2528 std::string nm = fcn->fcn_file_name (); |
| 2529 | |
| 2530 file_stat fs (nm); | |
| 2531 | |
| 2532 if (fs && fs.is_newer (now)) | |
| 2533 warning_with_id ("Octave:future-time-stamp", | |
| 2534 "time stamp for `%s' is in the future", nm.c_str ()); | |
| 1623 | 2535 } |
| 2536 else if (! (input_from_tmp_history_file || input_from_startup_file) | |
| 2537 && reading_script_file | |
| 1755 | 2538 && curr_fcn_file_name == id_name) |
| 1623 | 2539 { |
| 2540 warning ("function `%s' defined within script file `%s'", | |
| 1755 | 2541 id_name.c_str (), curr_fcn_file_full_name.c_str ()); |
| 1623 | 2542 } |
| 2543 | |
| 4872 | 2544 fcn->stash_function_name (id_name); |
| 2545 | |
| 7336 | 2546 if (! help_buf.empty ()) |
| 2547 { | |
| 2548 fcn->document (help_buf.top ()); | |
| 2549 | |
| 2550 help_buf.pop (); | |
| 2551 } | |
| 2552 | |
|
7755
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2553 if (reading_fcn_file && ! lexer_flags.parsing_nested_function) |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2554 curr_fcn_ptr = fcn; |
| 7336 | 2555 else |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2556 curr_fcn_ptr = 0; |
| 4426 | 2557 |
| 1623 | 2558 return fcn; |
| 2559 } | |
| 2560 | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2561 static tree_function_def * |
| 3665 | 2562 finish_function (tree_parameter_list *ret_list, |
| 2563 octave_user_function *fcn, octave_comment_list *lc) | |
| 1623 | 2564 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2565 tree_function_def *retval = 0; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2566 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2567 if (ret_list) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2568 ret_list->mark_as_formal_parameters (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2569 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2570 if (fcn) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2571 { |
|
7761
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2572 std::string nm = fcn->name (); |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2573 std::string file = fcn->fcn_file_name (); |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2574 |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2575 std::string tmp = nm; |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2576 if (! file.empty ()) |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2577 tmp += ": " + file; |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2578 |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2579 symbol_table::cache_name (fcn->scope (), tmp); |
|
5adeea5de26c
symbol table reporting functions
John W. Eaton <jwe@octave.org>
parents:
7755
diff
changeset
|
2580 |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2581 if (lc) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2582 fcn->stash_leading_comment (lc); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2583 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2584 fcn->define_ret_list (ret_list); |
|
7755
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2585 |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2586 if (lexer_flags.parsing_nested_function) |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2587 { |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2588 fcn->mark_as_nested_function (); |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2589 |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2590 symbol_table::install_subfunction (nm, octave_value (fcn)); |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2591 |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2592 if (lexer_flags.parsing_nested_function < 0) |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2593 { |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2594 lexer_flags.parsing_nested_function = 0; |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2595 symbol_table::reset_parent_scope (); |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2596 } |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2597 } |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2598 else if (! curr_fcn_ptr) |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2599 { |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2600 // FIXME -- there should be a better way to indicate that we |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2601 // should create a tree_function_def object other than |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2602 // looking at curr_fcn_ptr... |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2603 |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2604 retval = new tree_function_def (fcn); |
|
ea9cb4d68dbf
avoid installing subfunctions twice
John W. Eaton <jwe@octave.org>
parents:
7750
diff
changeset
|
2605 } |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2606 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2607 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2608 return retval; |
| 1623 | 2609 } |
| 2610 | |
| 2883 | 2611 static void |
| 2612 recover_from_parsing_function (void) | |
| 2613 { | |
| 4238 | 2614 if (symtab_context.empty ()) |
| 3903 | 2615 panic_impossible (); |
| 2616 | |
| 7336 | 2617 symbol_table::set_scope (symtab_context.top ()); |
| 4238 | 2618 symtab_context.pop (); |
| 2883 | 2619 |
| 2620 lexer_flags.defining_func = false; | |
| 2621 lexer_flags.parsed_function_name = false; | |
| 2622 lexer_flags.looking_at_return_list = false; | |
| 2623 lexer_flags.looking_at_parameter_list = false; | |
| 2624 } | |
| 2625 | |
| 2846 | 2626 // Make an index expression. |
| 2627 | |
| 751 | 2628 static tree_index_expression * |
| 3929 | 2629 make_index_expression (tree_expression *expr, tree_argument_list *args, |
| 3933 | 2630 char type) |
| 751 | 2631 { |
| 2632 tree_index_expression *retval = 0; | |
| 2633 | |
| 2970 | 2634 int l = expr->line (); |
| 2635 int c = expr->column (); | |
| 2636 | |
| 2637 expr->mark_postfix_indexed (); | |
| 2638 | |
| 3933 | 2639 if (expr->is_index_expression ()) |
| 2640 { | |
| 2641 tree_index_expression *tmp = static_cast<tree_index_expression *> (expr); | |
| 2642 | |
| 2643 tmp->append (args, type); | |
| 2644 | |
| 2645 retval = tmp; | |
| 2646 } | |
| 2647 else | |
| 2648 retval = new tree_index_expression (expr, args, l, c, type); | |
| 2970 | 2649 |
| 2650 return retval; | |
| 2651 } | |
| 2652 | |
| 2653 // Make an indirect reference expression. | |
| 2654 | |
| 3930 | 2655 static tree_index_expression * |
| 3523 | 2656 make_indirect_ref (tree_expression *expr, const std::string& elt) |
| 2970 | 2657 { |
| 3930 | 2658 tree_index_expression *retval = 0; |
| 2970 | 2659 |
| 2660 int l = expr->line (); | |
| 2661 int c = expr->column (); | |
| 2662 | |
| 3933 | 2663 if (expr->is_index_expression ()) |
| 2664 { | |
| 2665 tree_index_expression *tmp = static_cast<tree_index_expression *> (expr); | |
| 2666 | |
| 2667 tmp->append (elt); | |
| 2668 | |
| 2669 retval = tmp; | |
| 2670 } | |
| 2671 else | |
| 2672 retval = new tree_index_expression (expr, elt, l, c); | |
| 2970 | 2673 |
| 2674 lexer_flags.looking_at_indirect_ref = false; | |
| 751 | 2675 |
| 2676 return retval; | |
| 2677 } | |
| 1511 | 2678 |
| 4131 | 2679 // Make an indirect reference expression with dynamic field name. |
| 2680 | |
| 2681 static tree_index_expression * | |
| 2682 make_indirect_ref (tree_expression *expr, tree_expression *elt) | |
| 2683 { | |
| 2684 tree_index_expression *retval = 0; | |
| 2685 | |
| 2686 int l = expr->line (); | |
| 2687 int c = expr->column (); | |
| 2688 | |
| 2689 if (expr->is_index_expression ()) | |
| 2690 { | |
| 2691 tree_index_expression *tmp = static_cast<tree_index_expression *> (expr); | |
| 2692 | |
| 2693 tmp->append (elt); | |
| 2694 | |
| 2695 retval = tmp; | |
| 2696 } | |
| 2697 else | |
| 2698 retval = new tree_index_expression (expr, elt, l, c); | |
| 2699 | |
| 2700 lexer_flags.looking_at_indirect_ref = false; | |
| 2701 | |
| 2702 return retval; | |
| 2703 } | |
| 2704 | |
| 2846 | 2705 // Make a declaration command. |
| 2706 | |
| 2707 static tree_decl_command * | |
| 2708 make_decl_command (int tok, token *tok_val, tree_decl_init_list *lst) | |
| 2709 { | |
| 2710 tree_decl_command *retval = 0; | |
| 2711 | |
| 2712 int l = tok_val->line (); | |
| 2713 int c = tok_val->column (); | |
| 2714 | |
| 2715 switch (tok) | |
| 2716 { | |
| 2717 case GLOBAL: | |
| 2718 retval = new tree_global_command (lst, l, c); | |
| 2719 break; | |
| 2720 | |
| 2721 case STATIC: | |
| 2722 if (lexer_flags.defining_func) | |
| 2723 retval = new tree_static_command (lst, l, c); | |
| 2724 else | |
| 2725 { | |
| 2726 if (reading_script_file) | |
| 4844 | 2727 warning ("ignoring persistent declaration near line %d of file `%s'", |
| 2846 | 2728 l, curr_fcn_file_full_name.c_str ()); |
| 2729 else | |
| 4844 | 2730 warning ("ignoring persistent declaration near line %d", l); |
| 2846 | 2731 } |
| 2732 break; | |
| 2733 | |
| 2734 default: | |
| 2735 panic_impossible (); | |
| 2736 break; | |
| 2737 } | |
| 2738 | |
| 2739 return retval; | |
| 2740 } | |
| 2741 | |
| 1623 | 2742 // Finish building a matrix list. |
| 2743 | |
| 2744 static tree_expression * | |
| 1829 | 2745 finish_matrix (tree_matrix *m) |
| 1623 | 2746 { |
| 3110 | 2747 tree_expression *retval = m; |
| 2748 | |
| 2749 unwind_protect::begin_frame ("finish_matrix"); | |
| 2750 | |
| 2751 unwind_protect_int (error_state); | |
| 4452 | 2752 unwind_protect_int (warning_state); |
| 3110 | 2753 |
| 3815 | 2754 unwind_protect_bool (discard_error_messages); |
| 4452 | 2755 unwind_protect_bool (discard_warning_messages); |
| 2756 | |
| 3815 | 2757 discard_error_messages = true; |
| 4452 | 2758 discard_warning_messages = true; |
| 1623 | 2759 |
| 2533 | 2760 if (m->all_elements_are_constant ()) |
| 1829 | 2761 { |
| 2970 | 2762 octave_value tmp = m->rvalue (); |
| 1623 | 2763 |
| 3489 | 2764 if (! (error_state || warning_state)) |
| 2533 | 2765 { |
| 2766 tree_constant *tc_retval = new tree_constant (tmp); | |
| 2767 | |
| 5765 | 2768 std::ostringstream buf; |
| 2533 | 2769 |
| 2770 tree_print_code tpc (buf); | |
| 2771 | |
| 2772 m->accept (tpc); | |
| 2773 | |
| 5765 | 2774 tc_retval->stash_original_text (buf.str ()); |
| 2533 | 2775 |
| 2776 delete m; | |
| 2777 | |
| 2778 retval = tc_retval; | |
| 2779 } | |
| 1623 | 2780 } |
| 3110 | 2781 |
| 2782 unwind_protect::run_frame ("finish_matrix"); | |
| 1623 | 2783 |
| 2784 return retval; | |
| 2785 } | |
| 2786 | |
| 3351 | 2787 // Finish building a cell list. |
| 2788 | |
| 2789 static tree_expression * | |
| 2790 finish_cell (tree_cell *c) | |
| 2791 { | |
| 5875 | 2792 return finish_matrix (c); |
| 3351 | 2793 } |
| 2794 | |
| 1511 | 2795 static void |
| 2796 maybe_warn_missing_semi (tree_statement_list *t) | |
| 2797 { | |
| 5781 | 2798 if (lexer_flags.defining_func) |
| 1511 | 2799 { |
| 4219 | 2800 tree_statement *tmp = t->back(); |
| 1607 | 2801 |
| 1511 | 2802 if (tmp->is_expression ()) |
| 5781 | 2803 warning_with_id |
| 2804 ("Octave:missing-semicolon", | |
| 2805 "missing semicolon near line %d, column %d in file `%s'", | |
| 2806 tmp->line (), tmp->column (), curr_fcn_file_full_name.c_str ()); | |
| 1511 | 2807 } |
| 2808 } | |
| 1994 | 2809 |
| 2525 | 2810 static void |
| 2811 set_stmt_print_flag (tree_statement_list *list, char sep, | |
| 2812 bool warn_missing_semi) | |
| 2813 { | |
| 2814 switch (sep) | |
| 2815 { | |
| 2816 case ';': | |
| 2817 { | |
| 4219 | 2818 tree_statement *tmp = list->back (); |
| 2525 | 2819 tmp->set_print_flag (0); |
| 2820 } | |
| 2821 break; | |
| 2822 | |
| 2823 case 0: | |
| 2824 case ',': | |
| 2825 case '\n': | |
| 2826 if (warn_missing_semi) | |
| 2827 maybe_warn_missing_semi (list); | |
| 2828 break; | |
| 2829 | |
| 2830 default: | |
| 2831 warning ("unrecognized separator type!"); | |
| 2832 break; | |
| 2833 } | |
| 2834 } | |
| 2835 | |
| 3021 | 2836 static void |
| 2837 safe_fclose (void *f) | |
| 2838 { | |
| 5775 | 2839 // FIXME -- comments at the end of an input file are |
| 3765 | 2840 // discarded (otherwise, they would be appended to the next |
| 2841 // statement, possibly from the command line or another file, which | |
| 2842 // can be quite confusing). | |
| 2843 | |
| 5308 | 2844 octave_comment_list *tc = octave_comment_buffer::get_comment (); |
| 2845 | |
| 2846 delete tc; | |
| 3765 | 2847 |
| 3021 | 2848 if (f) |
| 2849 fclose (static_cast<FILE *> (f)); | |
| 2850 } | |
| 2851 | |
| 2852 static bool | |
| 5175 | 2853 looks_like_copyright (const std::string& s) |
| 3021 | 2854 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2855 bool retval = false; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2856 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2857 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
|
2858 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2859 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
diff
changeset
|
2860 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2861 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:
7719
diff
changeset
|
2862 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2863 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2864 return retval; |
| 3021 | 2865 } |
| 2866 | |
| 4540 | 2867 static int |
| 2868 text_getc (FILE *f) | |
| 2869 { | |
| 2870 int c = getc (f); | |
| 2871 | |
|
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
|
2872 // Convert CRLF into just LF and single CR into LF. |
| 4540 | 2873 |
| 2874 if (c == '\r') | |
| 2875 { | |
| 2876 c = getc (f); | |
| 2877 | |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
2878 if (c == '\n') |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
2879 input_line_number++; |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
2880 else |
| 4540 | 2881 { |
| 2882 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
|
2883 c = '\n'; |
| 4540 | 2884 } |
| 2885 } | |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
2886 else if (c == '\n') |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
2887 input_line_number++; |
| 4540 | 2888 |
| 2889 return c; | |
| 2890 } | |
| 2891 | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2892 class |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2893 stdio_stream_reader : public stream_reader |
| 3021 | 2894 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2895 public: |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2896 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
|
2897 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2898 int getc (void) { return ::text_getc (f); } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2899 int ungetc (int c) { return ::ungetc (c, f); } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2900 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2901 private: |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2902 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
|
2903 }; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2904 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2905 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
|
2906 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
|
2907 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2908 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
|
2909 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2910 while ((c = reader.getc ()) != EOF) |
| 3021 | 2911 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2912 switch (c) |
| 3021 | 2913 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2914 case ' ': |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2915 case '\t': |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2916 current_input_column++; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2917 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2918 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2919 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
|
2920 current_input_column = 0; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2921 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2922 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2923 default: |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2924 current_input_column--; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2925 reader.ungetc (c); |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2926 goto done; |
| 3021 | 2927 } |
| 2928 } | |
| 2929 | |
| 2930 done: | |
| 2931 | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2932 return (c == EOF); |
| 3021 | 2933 } |
| 2934 | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2935 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
|
2936 gobble_leading_white_space (FILE *ffile, bool& eof) |
| 3021 | 2937 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2938 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
|
2939 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2940 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
|
2941 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2942 // 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
|
2943 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
|
2944 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2945 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
|
2946 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2947 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
|
2948 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2949 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
|
2950 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2951 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
|
2952 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2953 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
|
2954 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2955 |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
2956 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
|
2957 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2958 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
|
2959 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2960 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2961 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
|
2962 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2963 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
|
2964 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
|
2965 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2966 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2967 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
|
2968 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2969 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
|
2970 break; |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2971 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2972 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
2973 return help_txt; |
| 3021 | 2974 } |
| 2975 | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2976 static bool |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2977 looking_at_function_keyword (FILE *ffile) |
| 5931 | 2978 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2979 bool status = false; |
| 3021 | 2980 |
| 2981 long pos = ftell (ffile); | |
| 2982 | |
| 2983 char buf [10]; | |
| 2984 fgets (buf, 10, ffile); | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2985 size_t len = strlen (buf); |
| 3021 | 2986 if (len > 8 && strncmp (buf, "function", 8) == 0 |
| 2987 && ! (isalnum (buf[8]) || buf[8] == '_')) | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
2988 status = true; |
| 3021 | 2989 |
| 2990 fseek (ffile, pos, SEEK_SET); | |
| 2991 | |
| 2992 return status; | |
| 2993 } | |
| 2994 | |
| 2995 static void | |
| 2996 restore_command_history (void *) | |
| 2997 { | |
| 2998 command_history::ignore_entries (! Vsaving_history); | |
| 2999 } | |
| 3000 | |
| 3001 static void | |
| 3002 restore_input_stream (void *f) | |
| 3003 { | |
| 3004 command_editor::set_input_stream (static_cast<FILE *> (f)); | |
| 3005 } | |
| 3006 | |
| 7336 | 3007 static octave_function * |
| 3008 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
|
3009 bool force_script = false, bool require_file = true, |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3010 const std::string& warn_for = std::string ()) |
| 3021 | 3011 { |
| 3012 unwind_protect::begin_frame ("parse_fcn_file"); | |
| 3013 | |
| 7336 | 3014 octave_function *fcn_ptr = 0; |
| 3021 | 3015 |
| 3016 // Open function file and parse. | |
| 3017 | |
| 3018 bool old_reading_fcn_file_state = reading_fcn_file; | |
| 3019 | |
| 3020 FILE *in_stream = command_editor::get_input_stream (); | |
| 3021 | |
| 3022 unwind_protect::add (restore_input_stream, in_stream); | |
| 3023 | |
| 3024 unwind_protect_ptr (ff_instream); | |
| 3025 | |
| 3026 unwind_protect_int (input_line_number); | |
| 3027 unwind_protect_int (current_input_column); | |
| 4238 | 3028 unwind_protect_int (end_tokens_expected); |
| 3021 | 3029 unwind_protect_bool (reading_fcn_file); |
| 3030 unwind_protect_bool (line_editing); | |
| 4238 | 3031 unwind_protect_str (parent_function_name); |
| 7336 | 3032 unwind_protect_str (current_class_name); |
| 3021 | 3033 |
| 3034 input_line_number = 0; | |
| 3035 current_input_column = 1; | |
| 4238 | 3036 end_tokens_expected = 0; |
| 3021 | 3037 reading_fcn_file = true; |
| 3038 line_editing = false; | |
| 4238 | 3039 parent_function_name = ""; |
| 7336 | 3040 current_class_name = dispatch_type; |
| 3021 | 3041 |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3042 // 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
|
3043 unwind_protect::add (restore_command_history, 0); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3044 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3045 // FIXME -- we shouldn't need both the |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3046 // command_history object and the |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3047 // Vsaving_history variable... |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3048 command_history::ignore_entries (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3049 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3050 unwind_protect_bool (Vsaving_history); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3051 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3052 Vsaving_history = false; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3053 |
| 3021 | 3054 FILE *ffile = get_input_from_file (ff, 0); |
| 3055 | |
| 3056 unwind_protect::add (safe_fclose, ffile); | |
| 3057 | |
| 3058 if (ffile) | |
| 3059 { | |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3060 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
|
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 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
|
3063 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3064 if (! eof) |
| 3021 | 3065 { |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3066 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
|
3067 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3068 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
|
3069 |
|
7750
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3070 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
|
3071 unwind_protect_bool (parser_end_of_input); |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3072 |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3073 get_input_from_eval_string = false; |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3074 parser_end_of_input = false; |
|
5c6c6f4803c8
make eval('script') to work again
John W. Eaton <jwe@octave.org>
parents:
7749
diff
changeset
|
3075 |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3076 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
|
3077 { |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3078 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
|
3079 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3080 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
|
3081 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
|
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 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
|
3084 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
|
3085 } |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3086 else |
|
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 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
|
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 // 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
|
3091 // 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
|
3092 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
|
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 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
|
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 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
|
3097 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3098 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
|
3099 } |
|
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 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
|
3102 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
|
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 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
|
3105 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
|
3106 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3107 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
|
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 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
|
3110 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
|
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 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
|
3113 |
|
7723
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3114 if (! help_txt.empty ()) |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3115 help_buf.push (help_txt); |
|
74f5e0c7de9e
first pass at handling block comments
John W. Eaton <jwe@octave.org>
parents:
7720
diff
changeset
|
3116 |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3117 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
|
3118 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
|
3119 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3120 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
|
3121 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3122 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
|
3123 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3124 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
|
3125 |
|
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3126 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
|
3127 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
|
3128 file_type.c_str(), ff.c_str ()); |
| 3021 | 3129 } |
| 3130 } | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3131 else if (require_file) |
| 3880 | 3132 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
|
3133 else if (! warn_for.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3134 error ("%s: unable to open file `%s'", warn_for.c_str (), ff.c_str ()); |
| 3021 | 3135 |
| 3136 unwind_protect::run_frame ("parse_fcn_file"); | |
| 3137 | |
| 7336 | 3138 return fcn_ptr; |
| 3021 | 3139 } |
| 3140 | |
| 5484 | 3141 std::string |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3142 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
|
3143 std::string& file) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3144 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3145 std::string retval; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3146 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3147 file = fcn_file_in_path (nm); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3148 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3149 if (! file.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3150 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3151 symbol_found = true; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3152 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3153 FILE *fptr = fopen (file.c_str (), "r"); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3154 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3155 if (fptr) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3156 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3157 unwind_protect::add (safe_fclose, fptr); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3158 |
|
7720
4e2eafef689c
unify comment and help text processing in lex.l and parse.y
John W. Eaton <jwe@octave.org>
parents:
7719
diff
changeset
|
3159 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
|
3160 retval = gobble_leading_white_space (fptr, eof); |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3161 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3162 if (retval.empty ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3163 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3164 octave_function *fcn = parse_fcn_file (file, ""); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3165 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3166 if (fcn) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3167 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3168 retval = fcn->doc_string (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3169 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3170 delete fcn; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3171 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3172 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3173 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3174 unwind_protect::run (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3175 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3176 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3177 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3178 return retval; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3179 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3180 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3181 std::string |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3182 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
|
3183 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3184 std::string file; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3185 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
|
3186 } |
|
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 std::string |
| 5484 | 3189 lookup_autoload (const std::string& nm) |
| 3190 { | |
| 5626 | 3191 std::string retval; |
| 3192 | |
| 3193 typedef std::map<std::string, std::string>::const_iterator am_iter; | |
| 3194 | |
| 3195 am_iter p = autoload_map.find (nm); | |
| 3196 | |
| 3197 if (p != autoload_map.end ()) | |
| 6323 | 3198 retval = load_path::find_file (p->second); |
| 5626 | 3199 |
| 3200 return retval; | |
| 5484 | 3201 } |
| 3202 | |
| 5592 | 3203 string_vector |
| 3204 autoloaded_functions (void) | |
| 3205 { | |
| 3206 string_vector names (autoload_map.size()); | |
| 3207 | |
| 3208 octave_idx_type i = 0; | |
| 5626 | 3209 typedef std::map<std::string, std::string>::const_iterator am_iter; |
| 3210 for (am_iter p = autoload_map.begin (); p != autoload_map.end (); p++) | |
| 5592 | 3211 names[i++] = p->first; |
| 3212 | |
| 3213 return names; | |
| 3214 } | |
| 3215 | |
| 3216 string_vector | |
| 3217 reverse_lookup_autoload (const std::string& nm) | |
| 3218 { | |
| 3219 string_vector names; | |
| 3220 | |
| 5626 | 3221 typedef std::map<std::string, std::string>::const_iterator am_iter; |
| 3222 for (am_iter p = autoload_map.begin (); p != autoload_map.end (); p++) | |
| 5592 | 3223 if (nm == p->second) |
| 3224 names.append (p->first); | |
| 3225 | |
| 3226 return names; | |
| 3227 } | |
| 3228 | |
| 7336 | 3229 octave_function * |
| 3230 load_fcn_from_file (const std::string& file_name, const std::string& dir_name, | |
| 3231 const std::string& dispatch_type, | |
| 3232 const std::string& fcn_name, bool autoload) | |
| 3021 | 3233 { |
| 7336 | 3234 octave_function *retval = 0; |
| 3235 | |
| 5484 | 3236 unwind_protect::begin_frame ("load_fcn_from_file"); |
| 3237 | |
| 7336 | 3238 std::string nm = file_name; |
| 6238 | 3239 |
| 3240 size_t nm_len = nm.length (); | |
| 5472 | 3241 |
| 3242 std::string file; | |
| 3243 | |
| 6323 | 3244 unwind_protect_bool (fcn_file_from_relative_lookup); |
| 3245 | |
| 3246 fcn_file_from_relative_lookup = false; | |
| 3247 | |
| 7336 | 3248 file = nm; |
| 3249 | |
| 3250 if ((nm_len > 4 && nm.substr (nm_len-4) == ".oct") | |
| 3251 || (nm_len > 4 && nm.substr (nm_len-4) == ".mex") | |
| 3252 || (nm_len > 2 && nm.substr (nm_len-2) == ".m")) | |
| 5472 | 3253 { |
| 6238 | 3254 nm = octave_env::base_pathname (file); |
| 3255 nm = nm.substr (0, nm.find_last_of ('.')); | |
| 5472 | 3256 } |
| 7336 | 3257 |
| 3258 if (autoload) | |
| 5472 | 3259 { |
| 7336 | 3260 unwind_protect_bool (autoloading); |
| 3261 autoloading = true; | |
| 3262 } | |
| 3263 | |
|
7749
14e05160b99f
reference counting for functions loaded from shared libraries
John W. Eaton <jwe@octave.org>
parents:
7736
diff
changeset
|
3264 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
|
3265 |
|
14e05160b99f
reference counting for functions loaded from shared libraries
John W. Eaton <jwe@octave.org>
parents:
7736
diff
changeset
|
3266 file = octave_env::make_absolute (file, octave_env::getcwd ()); |
| 4243 | 3267 |
| 3268 int len = file.length (); | |
| 3269 | |
| 4244 | 3270 if (len > 4 && file.substr (len-4, len-1) == ".oct") |
| 3021 | 3271 { |
| 7336 | 3272 if (autoload && ! fcn_name.empty ()) |
| 3273 nm = fcn_name; | |
| 3274 | |
| 3275 retval = octave_dynamic_loader::load_oct (nm, file, fcn_file_from_relative_lookup); | |
| 5864 | 3276 } |
| 3277 else if (len > 4 && file.substr (len-4, len-1) == ".mex") | |
| 7336 | 3278 retval = octave_dynamic_loader::load_mex (nm, file, fcn_file_from_relative_lookup); |
| 4244 | 3279 else if (len > 2) |
| 3021 | 3280 { |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3281 // These are needed by yyparse. |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3282 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3283 unwind_protect_str (curr_fcn_file_name); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3284 unwind_protect_str (curr_fcn_file_full_name); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3285 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3286 curr_fcn_file_name = nm; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3287 curr_fcn_file_full_name = file; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3288 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3289 retval = parse_fcn_file (file, dispatch_type, autoloading); |
| 3021 | 3290 } |
| 3291 | |
| 7336 | 3292 if (retval) |
| 3293 retval->stash_dir_name (dir_name); | |
| 3294 | |
| 5484 | 3295 unwind_protect::run_frame ("load_fcn_from_file"); |
| 3296 | |
| 7336 | 3297 return retval; |
| 5312 | 3298 } |
| 3299 | |
| 5484 | 3300 DEFCMD (autoload, args, , |
| 3301 "-*- texinfo -*-\n\ | |
| 3302 @deftypefn {Built-in Function} {} autoload (@var{function}, @var{file})\n\ | |
| 3303 Define @var{function} to autoload from @var{file}.\n\ | |
| 5626 | 3304 \n\ |
| 6926 | 3305 The second argument, @var{file}, should be an absolute file name or\n\ |
| 3306 a file name in the same directory as the function or script from which\n\ | |
| 3307 the autoload command was run. @var{file} should not depend on the\n\ | |
| 3308 Octave load path.\n\ | |
| 6380 | 3309 \n\ |
| 3310 Normally, calls to @code{autoload} appear in PKG_ADD script files that\n\ | |
| 3311 are evaluated when a directory is added to the Octave's load path. To\n\ | |
| 6926 | 3312 avoid having to hardcode directory names in @var{file}, if @var{file}\n\ |
| 3313 is in the same directory as the PKG_ADD script then\n\ | |
| 6380 | 3314 \n\ |
| 3315 @example\n\ | |
| 6926 | 3316 autoload (\"foo\", \"bar.oct\");\n\ |
| 6380 | 3317 @end example\n\ |
| 3318 \n\ | |
| 6926 | 3319 will load the function @code{foo} from the file @code{bar.oct}. The above\n\ |
| 3320 when @code{bar.oct} is not in the same directory or uses like\n\ | |
| 6380 | 3321 \n\ |
| 3322 @example\n\ | |
| 6637 | 3323 autoload (\"foo\", file_in_loadpath (\"bar.oct\"))\n\ |
| 6380 | 3324 @end example\n\ |
| 3325 \n\ | |
| 3326 @noindent\n\ | |
| 6926 | 3327 are strongly discouraged, as their behavior might be unpredictable.\n\ |
| 6380 | 3328 \n\ |
| 6637 | 3329 With no arguments, return a structure containing the current autoload map.\n\ |
| 6380 | 3330 @seealso{PKG_ADD}\n\ |
| 5484 | 3331 @end deftypefn") |
| 3332 { | |
| 5626 | 3333 octave_value retval; |
| 5484 | 3334 |
| 3335 int nargin = args.length (); | |
| 3336 | |
| 5626 | 3337 if (nargin == 0) |
| 3338 { | |
| 3339 Cell func_names (dim_vector (autoload_map.size ()), 1); | |
| 3340 Cell file_names (dim_vector (autoload_map.size ()), 1); | |
| 3341 | |
| 3342 octave_idx_type i = 0; | |
| 3343 typedef std::map<std::string, std::string>::const_iterator am_iter; | |
| 3344 for (am_iter p = autoload_map.begin (); p != autoload_map.end (); p++) | |
| 3345 { | |
| 3346 func_names(i) = p->first; | |
| 3347 file_names(i) = p->second; | |
| 3348 | |
| 3349 i++; | |
| 3350 } | |
| 3351 | |
| 3352 Octave_map m; | |
| 3353 | |
| 3354 m.assign ("function", func_names); | |
| 3355 m.assign ("file", file_names); | |
| 3356 | |
| 3357 retval = m; | |
| 3358 } | |
| 3359 else if (nargin == 2) | |
| 5484 | 3360 { |
| 3361 string_vector argv = args.make_argv ("autoload"); | |
| 3362 | |
| 3363 if (! error_state) | |
| 6380 | 3364 { |
| 3365 std::string nm = argv[2]; | |
| 3366 | |
| 3367 if (! octave_env::absolute_pathname (nm)) | |
| 6926 | 3368 { |
|
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
|
3369 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
|
3370 |
| 6926 | 3371 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
|
3372 |
| 6926 | 3373 if (fcn) |
| 3374 { | |
| 3375 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
|
3376 |
| 6926 | 3377 if (! fname.empty ()) |
| 3378 { | |
|
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
|
3379 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
changeset
|
3380 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>
parents:
7715
diff
changeset
|
3381 |
| 6926 | 3382 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
|
3383 |
| 6926 | 3384 if (fs.exists ()) |
| 3385 { | |
| 3386 nm = fname + nm; | |
| 3387 found = true; | |
| 3388 } | |
| 3389 } | |
| 3390 } | |
| 3391 if (! found) | |
| 3392 warning_with_id ("Octave:autoload-relative-file-name", | |
| 3393 "autoload: `%s' is not an absolute file name", | |
| 3394 nm.c_str ()); | |
| 3395 } | |
| 6380 | 3396 autoload_map[argv[1]] = nm; |
| 3397 } | |
| 5484 | 3398 } |
| 3399 else | |
| 5823 | 3400 print_usage (); |
| 5484 | 3401 |
| 3402 return retval; | |
| 3403 } | |
| 3404 | |
| 4486 | 3405 void |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3406 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
|
3407 bool verbose, bool require_file, const std::string& warn_for) |
| 4486 | 3408 { |
| 3409 std::string file_full_name = file_ops::tilde_expand (file_name); | |
| 3410 | |
| 3411 unwind_protect::begin_frame ("source_file"); | |
| 3412 | |
| 3413 unwind_protect_str (curr_fcn_file_name); | |
| 3414 unwind_protect_str (curr_fcn_file_full_name); | |
| 3415 | |
| 3416 curr_fcn_file_name = file_name; | |
| 3417 curr_fcn_file_full_name = file_full_name; | |
| 3418 | |
| 5975 | 3419 if (! context.empty ()) |
| 3420 { | |
| 3421 if (context == "caller") | |
| 7901 | 3422 octave_call_stack::goto_caller_frame (); |
| 5975 | 3423 else if (context == "base") |
| 7901 | 3424 octave_call_stack::goto_base_frame (); |
| 5975 | 3425 else |
| 3426 error ("source: context must be \"caller\" or \"base\""); | |
| 7336 | 3427 |
| 3428 if (! error_state) | |
| 7901 | 3429 unwind_protect::add (octave_call_stack::unwind_pop); |
| 5975 | 3430 } |
| 3431 | |
| 3432 if (! error_state) | |
| 3433 { | |
|
7715
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3434 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
|
3435 require_file, warn_for); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3436 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3437 if (! error_state) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3438 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3439 if (fcn && fcn->is_user_script ()) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3440 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3441 octave_value_list args; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3442 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3443 if (verbose) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3444 { |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3445 std::cout << "executing commands from " << file_full_name << " ... "; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3446 reading_startup_message_printed = true; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3447 std::cout.flush (); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3448 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3449 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3450 fcn->do_multi_index_op (0, args); |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3451 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3452 if (verbose) |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3453 std::cout << "done." << std::endl; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3454 |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3455 delete fcn; |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3456 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3457 } |
|
5b4d278ec828
parse scripts completely before executing
John W. Eaton <jwe@octave.org>
parents:
7699
diff
changeset
|
3458 else |
| 5975 | 3459 error ("source: error sourcing file `%s'", |
| 3460 file_full_name.c_str ()); | |
| 3461 } | |
| 4486 | 3462 |
| 3463 unwind_protect::run_frame ("source_file"); | |
| 3464 } | |
| 3465 | |
| 5739 | 3466 DEFUN (mfilename, args, , |
| 3467 "-*- texinfo -*-\n\ | |
| 3468 @deftypefn {Built-in Function} {} mfilename ()\n\ | |
| 3469 @deftypefnx {Built-in Function} {} mfilename (@code{\"fullpath\"})\n\ | |
| 3470 @deftypefnx {Built-in Function} {} mfilename (@code{\"fullpathext\"})\n\ | |
| 3471 Return the name of the currently executing file. At the top-level,\n\ | |
| 3472 return the empty string. Given the argument @code{\"fullpath\"},\n\ | |
| 3473 include the directory part of the file name, but not the extension.\n\ | |
| 3474 Given the argument @code{\"fullpathext\"}, include the directory part\n\ | |
| 3475 of the file name and the extension.\n\ | |
| 5774 | 3476 @end deftypefn") |
| 5739 | 3477 { |
| 3478 octave_value retval; | |
| 3479 | |
| 3480 int nargin = args.length (); | |
| 3481 | |
| 3482 if (nargin > 1) | |
| 3483 { | |
| 5823 | 3484 print_usage (); |
| 5739 | 3485 return retval; |
| 3486 } | |
| 3487 | |
| 3488 std::string arg; | |
| 3489 | |
| 3490 if (nargin == 1) | |
| 3491 { | |
| 3492 arg = args(0).string_value (); | |
| 3493 | |
| 3494 if (error_state) | |
| 3495 { | |
| 3496 error ("mfilename: expecting argument to be a character string"); | |
| 3497 return retval; | |
| 3498 } | |
| 3499 } | |
| 3500 | |
| 3501 std::string fname; | |
| 3502 | |
|
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
|
3503 octave_user_code *fcn = octave_call_stack::caller_user_code (); |
| 5743 | 3504 |
| 3505 if (fcn) | |
| 3506 { | |
| 3507 fname = fcn->fcn_file_name (); | |
| 3508 | |
| 3509 if (fname.empty ()) | |
| 3510 fname = fcn->name (); | |
| 3511 } | |
| 5739 | 3512 |
| 3513 if (arg == "fullpathext") | |
| 3514 retval = fname; | |
| 3515 else | |
| 3516 { | |
|
8007
a2ab20ba78f7
make file_ops a proper singleton class
John W. Eaton <jwe@octave.org>
parents:
8001
diff
changeset
|
3517 size_t dpos = fname.rfind (file_ops::dir_sep_char ()); |
| 5747 | 3518 size_t epos = fname.rfind ('.'); |
| 3519 | |
| 3520 if (epos <= dpos) | |
| 8021 | 3521 epos = std::string::npos; |
| 3522 | |
| 3523 fname = (epos != std::string::npos) ? fname.substr (0, epos) : fname; | |
| 5739 | 3524 |
| 3525 if (arg == "fullpath") | |
| 3526 retval = fname; | |
| 3527 else | |
| 8021 | 3528 retval = (dpos != std::string::npos) ? fname.substr (dpos+1) : fname; |
| 5739 | 3529 } |
| 3530 | |
| 3531 return retval; | |
| 3532 } | |
| 3533 | |
| 3534 | |
| 3021 | 3535 DEFUN (source, args, , |
| 3371 | 3536 "-*- texinfo -*-\n\ |
| 3537 @deftypefn {Built-in Function} {} source (@var{file})\n\ | |
| 3538 Parse and execute the contents of @var{file}. This is equivalent to\n\ | |
| 3539 executing commands from a script file, but without requiring the file to\n\ | |
| 3540 be named @file{@var{file}.m}.\n\ | |
| 3541 @end deftypefn") | |
| 3021 | 3542 { |
| 3543 octave_value_list retval; | |
| 3544 | |
| 3545 int nargin = args.length (); | |
| 3546 | |
| 5975 | 3547 if (nargin == 1 || nargin == 2) |
| 3021 | 3548 { |
| 3523 | 3549 std::string file_name = args(0).string_value (); |
| 3021 | 3550 |
| 3551 if (! error_state) | |
| 5975 | 3552 { |
| 3553 std::string context; | |
| 3554 | |
| 3555 if (nargin == 2) | |
| 3556 context = args(1).string_value (); | |
| 3557 | |
| 3558 if (! error_state) | |
| 3559 source_file (file_name, context); | |
| 3560 else | |
| 3561 error ("source: expecting context to be character string"); | |
| 3562 } | |
| 3021 | 3563 else |
| 3564 error ("source: expecting file name as argument"); | |
| 3565 } | |
| 3566 else | |
| 5823 | 3567 print_usage (); |
| 3021 | 3568 |
| 3569 return retval; | |
| 3570 } | |
| 3571 | |
| 3726 | 3572 // Evaluate an Octave function (built-in or interpreted) and return |
| 3844 | 3573 // the list of result values. NAME is the name of the function to |
| 3574 // call. ARGS are the arguments to the function. NARGOUT is the | |
| 3575 // number of output arguments expected. | |
| 3726 | 3576 |
| 3021 | 3577 octave_value_list |
| 3523 | 3578 feval (const std::string& name, const octave_value_list& args, int nargout) |
| 3156 | 3579 { |
| 3580 octave_value_list retval; | |
| 3581 | |
| 7336 | 3582 octave_value fcn = symbol_table::find_function (name, args); |
| 3583 | |
| 3584 if (fcn.is_defined ()) | |
| 3585 retval = fcn.do_multi_index_op (nargout, args); | |
| 3586 else | |
| 3587 error ("feval: function `%s' not found", name.c_str ()); | |
| 3156 | 3588 |
| 3589 return retval; | |
| 3590 } | |
| 3591 | |
| 4342 | 3592 octave_value_list |
| 3593 feval (octave_function *fcn, const octave_value_list& args, int nargout) | |
| 3594 { | |
| 3595 octave_value_list retval; | |
| 3596 | |
| 3597 if (fcn) | |
| 3598 retval = fcn->do_multi_index_op (nargout, args); | |
| 3599 | |
| 3600 return retval; | |
| 3601 } | |
| 3602 | |
| 3603 static octave_value_list | |
| 3604 get_feval_args (const octave_value_list& args) | |
| 3605 { | |
| 3606 int tmp_nargin = args.length () - 1; | |
| 3607 | |
| 3608 octave_value_list retval (tmp_nargin, octave_value ()); | |
| 3609 | |
| 3610 for (int i = 0; i < tmp_nargin; i++) | |
| 3611 retval(i) = args(i+1); | |
| 3612 | |
| 3613 string_vector arg_names = args.name_tags (); | |
| 3614 | |
| 3615 if (! arg_names.empty ()) | |
| 3616 { | |
| 3617 // tmp_nargin and arg_names.length () - 1 may differ if | |
| 3618 // we are passed all_va_args. | |
| 3619 | |
| 3620 int n = arg_names.length () - 1; | |
| 3621 | |
| 3622 int len = n > tmp_nargin ? tmp_nargin : n; | |
| 3623 | |
| 3624 string_vector tmp_arg_names (len); | |
| 3625 | |
| 3626 for (int i = 0; i < len; i++) | |
| 3627 tmp_arg_names(i) = arg_names(i+1); | |
| 3628 | |
| 3629 retval.stash_name_tags (tmp_arg_names); | |
| 3630 } | |
| 3631 | |
| 3632 return retval; | |
| 3633 } | |
| 3634 | |
| 3635 | |
| 3726 | 3636 // Evaluate an Octave function (built-in or interpreted) and return |
| 3637 // the list of result values. The first element of ARGS should be a | |
| 3638 // string containing the name of the function to call, then the rest | |
| 3639 // are the actual arguments to the function. NARGOUT is the number of | |
| 3640 // output arguments expected. | |
| 3641 | |
| 3156 | 3642 octave_value_list |
| 3021 | 3643 feval (const octave_value_list& args, int nargout) |
| 3644 { | |
| 3645 octave_value_list retval; | |
| 3646 | |
| 4342 | 3647 int nargin = args.length (); |
| 3648 | |
| 3649 if (nargin > 0) | |
| 3021 | 3650 { |
| 4342 | 3651 octave_value f_arg = args(0); |
| 3652 | |
| 3653 if (f_arg.is_string ()) | |
| 3654 { | |
| 3655 std::string name = f_arg.string_value (); | |
| 3656 | |
| 3657 if (! error_state) | |
| 3156 | 3658 { |
| 4342 | 3659 octave_value_list tmp_args = get_feval_args (args); |
| 3660 | |
| 3661 retval = feval (name, tmp_args, nargout); | |
| 3156 | 3662 } |
| 4342 | 3663 } |
| 3664 else | |
| 3665 { | |
| 3666 octave_function *fcn = f_arg.function_value (); | |
| 3667 | |
| 3668 if (fcn) | |
| 3669 { | |
| 3670 octave_value_list tmp_args = get_feval_args (args); | |
| 3671 | |
| 3672 retval = feval (fcn, tmp_args, nargout); | |
| 3673 } | |
| 3021 | 3674 } |
| 3675 } | |
| 3676 | |
| 3677 return retval; | |
| 3678 } | |
| 3679 | |
| 3680 DEFUN (feval, args, nargout, | |
| 3371 | 3681 "-*- texinfo -*-\n\ |
| 3682 @deftypefn {Built-in Function} {} feval (@var{name}, @dots{})\n\ | |
| 3683 Evaluate the function named @var{name}. Any arguments after the first\n\ | |
| 3684 are passed on to the named function. For example,\n\ | |
| 3685 \n\ | |
| 3686 @example\n\ | |
| 3687 feval (\"acos\", -1)\n\ | |
| 3688 @result{} 3.1416\n\ | |
| 3689 @end example\n\ | |
| 3021 | 3690 \n\ |
| 3371 | 3691 @noindent\n\ |
| 3692 calls the function @code{acos} with the argument @samp{-1}.\n\ | |
| 3693 \n\ | |
| 3694 The function @code{feval} is necessary in order to be able to write\n\ | |
| 3695 functions that call user-supplied functions, because Octave does not\n\ | |
| 3696 have a way to declare a pointer to a function (like C) or to declare a\n\ | |
| 3697 special kind of variable that can be used to hold the name of a function\n\ | |
| 3698 (like @code{EXTERNAL} in Fortran). Instead, you must refer to functions\n\ | |
| 3699 by name, and use @code{feval} to call them.\n\ | |
| 3700 @end deftypefn") | |
| 3021 | 3701 { |
| 3702 octave_value_list retval; | |
| 3703 | |
| 3704 int nargin = args.length (); | |
| 3705 | |
| 3706 if (nargin > 0) | |
| 3707 retval = feval (args, nargout); | |
| 3708 else | |
| 5823 | 3709 print_usage (); |
| 3021 | 3710 |
| 3711 return retval; | |
| 3712 } | |
| 3713 | |
| 3099 | 3714 octave_value_list |
| 3523 | 3715 eval_string (const std::string& s, bool silent, int& parse_status, int nargout) |
| 3021 | 3716 { |
| 3877 | 3717 octave_value_list retval; |
| 3718 | |
| 3021 | 3719 unwind_protect::begin_frame ("eval_string"); |
| 3720 | |
| 3721 unwind_protect_bool (get_input_from_eval_string); | |
| 3877 | 3722 unwind_protect_bool (input_from_eval_string_pending); |
| 3883 | 3723 unwind_protect_bool (parser_end_of_input); |
| 5189 | 3724 unwind_protect_bool (line_editing); |
| 3021 | 3725 unwind_protect_str (current_eval_string); |
| 3726 | |
| 3727 get_input_from_eval_string = true; | |
| 3877 | 3728 input_from_eval_string_pending = true; |
| 3883 | 3729 parser_end_of_input = false; |
| 5189 | 3730 line_editing = false; |
| 3731 | |
| 3021 | 3732 current_eval_string = s; |
| 3733 | |
| 3734 YY_BUFFER_STATE old_buf = current_buffer (); | |
| 3735 YY_BUFFER_STATE new_buf = create_buffer (0); | |
| 3736 | |
| 3737 unwind_protect::add (restore_input_buffer, old_buf); | |
| 3738 unwind_protect::add (delete_input_buffer, new_buf); | |
| 3739 | |
| 3740 switch_to_buffer (new_buf); | |
| 3741 | |
| 3877 | 3742 do |
| 3743 { | |
| 4318 | 3744 reset_parser (); |
| 3745 | |
|
7903
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3746 unwind_protect_ptr (global_command); |
|
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3747 |
| 3877 | 3748 parse_status = yyparse (); |
| 3749 | |
| 3750 tree_statement_list *command = global_command; | |
| 3751 | |
|
7903
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3752 // Restore previous value of global_command. |
|
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3753 unwind_protect::run (); |
|
8018e10d2b87
save and restore global_command as needed
John W. Eaton <jwe@octave.org>
parents:
7901
diff
changeset
|
3754 |
| 3883 | 3755 if (parse_status == 0) |
| 3877 | 3756 { |
| 3883 | 3757 if (command) |
| 3758 { | |
| 3759 retval = command->eval (silent, nargout); | |
| 3760 | |
| 3761 delete command; | |
| 3762 | |
| 3763 command = 0; | |
| 3764 | |
| 3765 if (error_state | |
| 4207 | 3766 || tree_return_command::returning |
| 3767 || tree_break_command::breaking | |
| 3768 || tree_continue_command::continuing) | |
| 3883 | 3769 break; |
| 3770 } | |
| 3771 else if (parser_end_of_input) | |
| 3877 | 3772 break; |
| 3883 | 3773 } |
| 3877 | 3774 } |
| 3775 while (parse_status == 0); | |
| 3021 | 3776 |
| 3777 unwind_protect::run_frame ("eval_string"); | |
| 3778 | |
| 3779 return retval; | |
| 3780 } | |
| 3781 | |
| 3782 octave_value | |
| 3523 | 3783 eval_string (const std::string& s, bool silent, int& parse_status) |
| 3021 | 3784 { |
| 3785 octave_value retval; | |
| 3786 | |
| 3787 octave_value_list tmp = eval_string (s, silent, parse_status, 1); | |
| 3788 | |
| 3789 if (! tmp.empty ()) | |
| 3790 retval = tmp(0); | |
| 3791 | |
| 3792 return retval; | |
| 3793 } | |
| 3794 | |
| 3795 static octave_value_list | |
| 3796 eval_string (const octave_value& arg, bool silent, int& parse_status, | |
| 3797 int nargout) | |
| 3798 { | |
| 3523 | 3799 std::string s = arg.string_value (); |
| 3021 | 3800 |
| 3801 if (error_state) | |
| 3802 { | |
| 3523 | 3803 error ("eval: expecting std::string argument"); |
| 4233 | 3804 return octave_value (-1); |
| 3021 | 3805 } |
| 3806 | |
| 3807 return eval_string (s, silent, parse_status, nargout); | |
| 3808 } | |
| 3809 | |
| 3810 DEFUN (eval, args, nargout, | |
| 3371 | 3811 "-*- texinfo -*-\n\ |
| 3812 @deftypefn {Built-in Function} {} eval (@var{try}, @var{catch})\n\ | |
| 3813 Parse the string @var{try} and evaluate it as if it were an Octave\n\ | |
| 6643 | 3814 program. If that fails, evaluate the optional string @var{catch}.\n\ |
| 4463 | 3815 The string @var{try} is evaluated in the current context,\n\ |
| 3816 so any results remain available after @code{eval} returns.\n\ | |
| 6643 | 3817 \n\ |
| 3818 The following example makes the variable @var{a} with the approximate\n\ | |
| 3819 value 3.1416 available.\n\ | |
| 3820 \n\ | |
| 3821 @example\n\ | |
| 3822 eval(\"a = acos(-1);\");\n\ | |
| 3823 @end example\n\ | |
| 3824 \n\ | |
| 3825 If an error occurs during the evaluation of @var{try} the @var{catch}\n\ | |
| 3826 string is evaluated, as the following example shows.\n\ | |
| 3827 \n\ | |
| 3828 @example\n\ | |
| 3829 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
|
3830 'printf (\"This error occurred:\\n%s\\n\", lasterr ());');\n\ |
| 7001 | 3831 @print{} This error occurred:\n\ |
|
8015
30629059b72d
Update the manual to reflect the changes in error output
sh@sh-laptop
parents:
8007
diff
changeset
|
3832 This is a bad example\n\ |
| 6643 | 3833 @end example\n\ |
| 3371 | 3834 @end deftypefn") |
| 3021 | 3835 { |
| 3836 octave_value_list retval; | |
| 3837 | |
| 3838 int nargin = args.length (); | |
| 3839 | |
| 3840 if (nargin > 0) | |
| 3841 { | |
| 3842 unwind_protect::begin_frame ("Feval"); | |
| 3843 | |
| 3844 if (nargin > 1) | |
| 3845 { | |
| 4699 | 3846 unwind_protect_int (buffer_error_messages); |
| 3847 buffer_error_messages++; | |
| 3021 | 3848 } |
| 3849 | |
| 3850 int parse_status = 0; | |
| 3851 | |
| 4463 | 3852 octave_value_list tmp = eval_string (args(0), nargout > 0, |
| 3853 parse_status, nargout); | |
| 3854 | |
| 3855 if (nargout > 0) | |
| 3856 retval = tmp; | |
| 3021 | 3857 |
| 3858 if (nargin > 1 && (parse_status != 0 || error_state)) | |
| 3859 { | |
| 3860 error_state = 0; | |
| 3861 | |
| 3862 // Set up for letting the user print any messages from | |
| 3863 // errors that occurred in the first part of this eval(). | |
| 3864 | |
| 4699 | 3865 buffer_error_messages--; |
| 3021 | 3866 |
| 3867 eval_string (args(1), 0, parse_status, nargout); | |
| 3868 | |
| 3869 retval = octave_value_list (); | |
| 3870 } | |
| 3871 | |
| 3872 unwind_protect::run_frame ("Feval"); | |
| 3873 } | |
| 3874 else | |
| 5823 | 3875 print_usage (); |
| 3021 | 3876 |
| 3877 return retval; | |
| 3878 } | |
| 3879 | |
|
7562
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3880 /* |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3881 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3882 %% test/octave.test/eval/eval-1.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3883 %!#test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3884 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3885 %! assert(eval ("x"),1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3886 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3887 %% test/octave.test/eval/eval-2.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3888 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3889 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3890 %! assert(eval ("x;")); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3891 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3892 %% test/octave.test/eval/eval-3.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3893 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3894 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3895 %! assert(eval ("x;"),1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3896 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3897 %% FIXME |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3898 %% 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
|
3899 %% 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
|
3900 %% test/octave.test/eval/eval-4.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3901 %!#test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3902 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3903 %! assert(eval ("x");,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3904 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3905 %% test/octave.test/eval/eval-5.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3906 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3907 %! eval ("flipud = 2;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3908 %! assert(flipud,2); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3909 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3910 %% test/octave.test/eval/eval-6.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3911 %!function y = f () |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3912 %! eval ("flipud = 2;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3913 %! y = flipud; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3914 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3915 %! assert(f,2); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3916 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3917 %% test/octave.test/eval/eval-7.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3918 %!#test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3919 %! eval ("x = 1"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3920 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3921 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3922 %% test/octave.test/eval/eval-8.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3923 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3924 %! eval ("x = 1;") |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3925 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3926 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3927 %% test/octave.test/eval/eval-9.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3928 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3929 %! eval ("x = 1;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3930 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3931 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3932 %% test/octave.test/eval/eval-10.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3933 %!#test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3934 %! eval ("x = 1") |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3935 %! assert(x,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3936 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3937 %% test/octave.test/eval/eval-11.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3938 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3939 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3940 %! y = eval ("x"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3941 %! assert(y,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3942 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3943 %% test/octave.test/eval/eval-12.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3944 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3945 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3946 %! y = eval ("x;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3947 %! assert(y,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3948 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3949 %% test/octave.test/eval/eval-13.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3950 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3951 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3952 %! y = eval ("x;"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3953 %! assert(y,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3954 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3955 %% test/octave.test/eval/eval-14.m |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3956 %!test |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3957 %! x = 1; |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3958 %! y = eval ("x"); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3959 %! assert(y,1); |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3960 |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3961 */ |
|
c827f5673321
move tests to individual source files
John W. Eaton <jwe@octave.org>
parents:
7351
diff
changeset
|
3962 |
| 4661 | 3963 DEFUN (assignin, args, , |
| 4297 | 3964 "-*- texinfo -*-\n\ |
| 3965 @deftypefn {Built-in Function} {} assignin (@var{context}, @var{varname}, @var{value})\n\ | |
| 3966 Assign @var{value} to @var{varname} in context @var{context}, which\n\ | |
| 3967 may be either @code{\"base\"} or @code{\"caller\"}.\n\ | |
| 3968 @end deftypefn") | |
| 3969 { | |
| 3970 octave_value_list retval; | |
| 3971 | |
| 3972 int nargin = args.length (); | |
| 3973 | |
| 3974 if (nargin == 3) | |
| 3975 { | |
| 3976 std::string context = args(0).string_value (); | |
| 3977 | |
| 3978 if (! error_state) | |
| 3979 { | |
| 7336 | 3980 symbol_table::scope_id scope = -1; |
| 4297 | 3981 |
| 3982 if (context == "caller") | |
| 7901 | 3983 octave_call_stack::goto_caller_frame (); |
| 4297 | 3984 else if (context == "base") |
| 7901 | 3985 octave_call_stack::goto_base_frame (); |
| 4297 | 3986 else |
| 3987 error ("assignin: context must be \"caller\" or \"base\""); | |
| 3988 | |
| 3989 if (! error_state) | |
| 3990 { | |
| 7901 | 3991 unwind_protect::add (octave_call_stack::unwind_pop); |
| 3992 | |
| 4297 | 3993 std::string nm = args(1).string_value (); |
| 3994 | |
| 3995 if (! error_state) | |
| 3996 { | |
| 3997 if (valid_identifier (nm)) | |
| 7336 | 3998 symbol_table::varref (nm, scope) = args(2); |
| 4297 | 3999 else |
| 4000 error ("assignin: invalid variable name"); | |
| 4001 } | |
| 4002 else | |
| 4003 error ("assignin: expecting variable name as second argument"); | |
| 4004 } | |
| 4005 } | |
| 4006 else | |
| 4007 error ("assignin: expecting string as first argument"); | |
| 4008 } | |
| 4009 else | |
| 5823 | 4010 print_usage (); |
| 4297 | 4011 |
| 4012 return retval; | |
| 4013 } | |
| 4014 | |
| 4245 | 4015 DEFUN (evalin, args, nargout, |
| 4016 "-*- texinfo -*-\n\ | |
| 4017 @deftypefn {Built-in Function} {} evalin (@var{context}, @var{try}, @var{catch})\n\ | |
| 4018 Like @code{eval}, except that the expressions are evaluated in the\n\ | |
| 4019 context @var{context}, which may be either @code{\"caller\"} or\n\ | |
| 4246 | 4020 @code{\"base\"}.\n\ |
| 4245 | 4021 @end deftypefn") |
| 4022 { | |
| 4023 octave_value_list retval; | |
| 4024 | |
| 4025 int nargin = args.length (); | |
| 4026 | |
| 4027 if (nargin > 1) | |
| 4028 { | |
| 4029 std::string context = args(0).string_value (); | |
| 4030 | |
| 4031 if (! error_state) | |
| 4032 { | |
| 4033 unwind_protect::begin_frame ("Fevalin"); | |
| 4034 | |
| 4035 if (context == "caller") | |
| 7901 | 4036 octave_call_stack::goto_caller_frame (); |
| 4245 | 4037 else if (context == "base") |
| 7901 | 4038 octave_call_stack::goto_base_frame (); |
| 4245 | 4039 else |
| 4040 error ("evalin: context must be \"caller\" or \"base\""); | |
| 4041 | |
| 4297 | 4042 if (! error_state) |
| 4245 | 4043 { |
| 7901 | 4044 unwind_protect::add (octave_call_stack::unwind_pop); |
| 7336 | 4045 |
| 4297 | 4046 if (nargin > 2) |
| 4047 { | |
| 4699 | 4048 unwind_protect_int (buffer_error_messages); |
| 4049 buffer_error_messages++; | |
| 4297 | 4050 } |
| 4051 | |
| 4052 int parse_status = 0; | |
| 4053 | |
| 4463 | 4054 octave_value_list tmp = eval_string (args(1), nargout > 0, |
| 4055 parse_status, nargout); | |
| 4056 | |
| 4057 if (nargout > 0) | |
| 4058 retval = tmp; | |
| 4297 | 4059 |
| 4060 if (nargin > 2 && (parse_status != 0 || error_state)) | |
| 4061 { | |
| 4062 error_state = 0; | |
| 4063 | |
| 4064 // Set up for letting the user print any messages from | |
| 4065 // errors that occurred in the first part of this eval(). | |
| 4066 | |
| 4699 | 4067 buffer_error_messages--; |
| 4297 | 4068 |
| 4069 eval_string (args(2), 0, parse_status, nargout); | |
| 4070 | |
| 4071 retval = octave_value_list (); | |
| 4072 } | |
| 4245 | 4073 } |
| 4074 | |
| 4075 unwind_protect::run_frame ("Fevalin"); | |
| 4076 } | |
| 4077 else | |
| 4078 error ("evalin: expecting string as first argument"); | |
| 4079 } | |
| 4080 else | |
| 5823 | 4081 print_usage (); |
| 4245 | 4082 |
| 4083 return retval; | |
| 4084 } | |
| 4085 | |
| 1994 | 4086 /* |
| 4087 ;;; Local Variables: *** | |
| 4088 ;;; mode: text *** | |
| 4089 ;;; End: *** | |
| 4090 */ |