f-typeprint.c revision 1.8
1/* Support for printing Fortran types for GDB, the GNU debugger. 2 3 Copyright (C) 1986-2019 Free Software Foundation, Inc. 4 5 Contributed by Motorola. Adapted from the C version by Farooq Butt 6 (fmbutt@engage.sps.mot.com). 7 8 This file is part of GDB. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 22 23#include "defs.h" 24#include "gdb_obstack.h" 25#include "bfd.h" 26#include "symtab.h" 27#include "gdbtypes.h" 28#include "expression.h" 29#include "value.h" 30#include "gdbcore.h" 31#include "target.h" 32#include "f-lang.h" 33#include "typeprint.h" 34 35#if 0 /* Currently unused. */ 36static void f_type_print_args (struct type *, struct ui_file *); 37#endif 38 39static void f_type_print_varspec_suffix (struct type *, struct ui_file *, int, 40 int, int, int); 41 42void f_type_print_varspec_prefix (struct type *, struct ui_file *, 43 int, int); 44 45void f_type_print_base (struct type *, struct ui_file *, int, int); 46 47 48/* LEVEL is the depth to indent lines by. */ 49 50void 51f_print_type (struct type *type, const char *varstring, struct ui_file *stream, 52 int show, int level, const struct type_print_options *flags) 53{ 54 enum type_code code; 55 56 if (type_not_associated (type)) 57 { 58 val_print_not_associated (stream); 59 return; 60 } 61 62 if (type_not_allocated (type)) 63 { 64 val_print_not_allocated (stream); 65 return; 66 } 67 68 f_type_print_base (type, stream, show, level); 69 code = TYPE_CODE (type); 70 if ((varstring != NULL && *varstring != '\0') 71 /* Need a space if going to print stars or brackets; 72 but not if we will print just a type name. */ 73 || ((show > 0 || TYPE_NAME (type) == 0) 74 && (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC 75 || code == TYPE_CODE_METHOD 76 || code == TYPE_CODE_ARRAY 77 || code == TYPE_CODE_REF))) 78 fputs_filtered (" ", stream); 79 f_type_print_varspec_prefix (type, stream, show, 0); 80 81 if (varstring != NULL) 82 { 83 int demangled_args; 84 85 fputs_filtered (varstring, stream); 86 87 /* For demangled function names, we have the arglist as part of the name, 88 so don't print an additional pair of ()'s. */ 89 90 demangled_args = (*varstring != '\0' 91 && varstring[strlen (varstring) - 1] == ')'); 92 f_type_print_varspec_suffix (type, stream, show, 0, demangled_args, 0); 93 } 94} 95 96/* Print any asterisks or open-parentheses needed before the 97 variable name (to describe its type). 98 99 On outermost call, pass 0 for PASSED_A_PTR. 100 On outermost call, SHOW > 0 means should ignore 101 any typename for TYPE and show its details. 102 SHOW is always zero on recursive calls. */ 103 104void 105f_type_print_varspec_prefix (struct type *type, struct ui_file *stream, 106 int show, int passed_a_ptr) 107{ 108 if (type == 0) 109 return; 110 111 if (TYPE_NAME (type) && show <= 0) 112 return; 113 114 QUIT; 115 116 switch (TYPE_CODE (type)) 117 { 118 case TYPE_CODE_PTR: 119 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1); 120 break; 121 122 case TYPE_CODE_FUNC: 123 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0); 124 if (passed_a_ptr) 125 fprintf_filtered (stream, "("); 126 break; 127 128 case TYPE_CODE_ARRAY: 129 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0); 130 break; 131 132 case TYPE_CODE_UNDEF: 133 case TYPE_CODE_STRUCT: 134 case TYPE_CODE_UNION: 135 case TYPE_CODE_ENUM: 136 case TYPE_CODE_INT: 137 case TYPE_CODE_FLT: 138 case TYPE_CODE_VOID: 139 case TYPE_CODE_ERROR: 140 case TYPE_CODE_CHAR: 141 case TYPE_CODE_BOOL: 142 case TYPE_CODE_SET: 143 case TYPE_CODE_RANGE: 144 case TYPE_CODE_STRING: 145 case TYPE_CODE_METHOD: 146 case TYPE_CODE_REF: 147 case TYPE_CODE_COMPLEX: 148 case TYPE_CODE_TYPEDEF: 149 /* These types need no prefix. They are listed here so that 150 gcc -Wall will reveal any types that haven't been handled. */ 151 break; 152 } 153} 154 155/* Print any array sizes, function arguments or close parentheses 156 needed after the variable name (to describe its type). 157 Args work like c_type_print_varspec_prefix. */ 158 159static void 160f_type_print_varspec_suffix (struct type *type, struct ui_file *stream, 161 int show, int passed_a_ptr, int demangled_args, 162 int arrayprint_recurse_level) 163{ 164 int upper_bound, lower_bound; 165 166 /* No static variables are permitted as an error call may occur during 167 execution of this function. */ 168 169 if (type == 0) 170 return; 171 172 if (TYPE_NAME (type) && show <= 0) 173 return; 174 175 QUIT; 176 177 switch (TYPE_CODE (type)) 178 { 179 case TYPE_CODE_ARRAY: 180 arrayprint_recurse_level++; 181 182 if (arrayprint_recurse_level == 1) 183 fprintf_filtered (stream, "("); 184 185 if (type_not_associated (type)) 186 val_print_not_associated (stream); 187 else if (type_not_allocated (type)) 188 val_print_not_allocated (stream); 189 else 190 { 191 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY) 192 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 193 0, 0, arrayprint_recurse_level); 194 195 lower_bound = f77_get_lowerbound (type); 196 if (lower_bound != 1) /* Not the default. */ 197 fprintf_filtered (stream, "%d:", lower_bound); 198 199 /* Make sure that, if we have an assumed size array, we 200 print out a warning and print the upperbound as '*'. */ 201 202 if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) 203 fprintf_filtered (stream, "*"); 204 else 205 { 206 upper_bound = f77_get_upperbound (type); 207 fprintf_filtered (stream, "%d", upper_bound); 208 } 209 210 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_ARRAY) 211 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 212 0, 0, arrayprint_recurse_level); 213 } 214 if (arrayprint_recurse_level == 1) 215 fprintf_filtered (stream, ")"); 216 else 217 fprintf_filtered (stream, ","); 218 arrayprint_recurse_level--; 219 break; 220 221 case TYPE_CODE_PTR: 222 case TYPE_CODE_REF: 223 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 1, 0, 224 arrayprint_recurse_level); 225 fprintf_filtered (stream, ")"); 226 break; 227 228 case TYPE_CODE_FUNC: 229 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 230 passed_a_ptr, 0, arrayprint_recurse_level); 231 if (passed_a_ptr) 232 fprintf_filtered (stream, ")"); 233 234 fprintf_filtered (stream, "()"); 235 break; 236 237 case TYPE_CODE_UNDEF: 238 case TYPE_CODE_STRUCT: 239 case TYPE_CODE_UNION: 240 case TYPE_CODE_ENUM: 241 case TYPE_CODE_INT: 242 case TYPE_CODE_FLT: 243 case TYPE_CODE_VOID: 244 case TYPE_CODE_ERROR: 245 case TYPE_CODE_CHAR: 246 case TYPE_CODE_BOOL: 247 case TYPE_CODE_SET: 248 case TYPE_CODE_RANGE: 249 case TYPE_CODE_STRING: 250 case TYPE_CODE_METHOD: 251 case TYPE_CODE_COMPLEX: 252 case TYPE_CODE_TYPEDEF: 253 /* These types do not need a suffix. They are listed so that 254 gcc -Wall will report types that may not have been considered. */ 255 break; 256 } 257} 258 259/* Print the name of the type (or the ultimate pointer target, 260 function value or array element), or the description of a 261 structure or union. 262 263 SHOW nonzero means don't print this type as just its name; 264 show its real definition even if it has a name. 265 SHOW zero means print just typename or struct tag if there is one 266 SHOW negative means abbreviate structure elements. 267 SHOW is decremented for printing of structure elements. 268 269 LEVEL is the depth to indent by. 270 We increase it for some recursive calls. */ 271 272void 273f_type_print_base (struct type *type, struct ui_file *stream, int show, 274 int level) 275{ 276 int upper_bound; 277 int index; 278 279 QUIT; 280 281 wrap_here (" "); 282 if (type == NULL) 283 { 284 fputs_filtered ("<type unknown>", stream); 285 return; 286 } 287 288 /* When SHOW is zero or less, and there is a valid type name, then always 289 just print the type name directly from the type. */ 290 291 if ((show <= 0) && (TYPE_NAME (type) != NULL)) 292 { 293 const char *prefix = ""; 294 if (TYPE_CODE (type) == TYPE_CODE_UNION) 295 prefix = "Type, C_Union :: "; 296 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) 297 prefix = "Type "; 298 fprintfi_filtered (level, stream, "%s%s", prefix, TYPE_NAME (type)); 299 return; 300 } 301 302 if (TYPE_CODE (type) != TYPE_CODE_TYPEDEF) 303 type = check_typedef (type); 304 305 switch (TYPE_CODE (type)) 306 { 307 case TYPE_CODE_TYPEDEF: 308 f_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level); 309 break; 310 311 case TYPE_CODE_ARRAY: 312 f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level); 313 break; 314 case TYPE_CODE_FUNC: 315 if (TYPE_TARGET_TYPE (type) == NULL) 316 type_print_unknown_return_type (stream); 317 else 318 f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level); 319 break; 320 321 case TYPE_CODE_PTR: 322 fprintfi_filtered (level, stream, "PTR TO -> ( "); 323 f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0); 324 break; 325 326 case TYPE_CODE_REF: 327 fprintfi_filtered (level, stream, "REF TO -> ( "); 328 f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0); 329 break; 330 331 case TYPE_CODE_VOID: 332 fprintfi_filtered (level, stream, "VOID"); 333 break; 334 335 case TYPE_CODE_UNDEF: 336 fprintfi_filtered (level, stream, "struct <unknown>"); 337 break; 338 339 case TYPE_CODE_ERROR: 340 fprintfi_filtered (level, stream, "%s", TYPE_ERROR_NAME (type)); 341 break; 342 343 case TYPE_CODE_RANGE: 344 /* This should not occur. */ 345 fprintfi_filtered (level, stream, "<range type>"); 346 break; 347 348 case TYPE_CODE_CHAR: 349 case TYPE_CODE_INT: 350 /* There may be some character types that attempt to come 351 through as TYPE_CODE_INT since dbxstclass.h is so 352 C-oriented, we must change these to "character" from "char". */ 353 354 if (strcmp (TYPE_NAME (type), "char") == 0) 355 fprintfi_filtered (level, stream, "character"); 356 else 357 goto default_case; 358 break; 359 360 case TYPE_CODE_STRING: 361 /* Strings may have dynamic upperbounds (lengths) like arrays. */ 362 363 if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) 364 fprintfi_filtered (level, stream, "character*(*)"); 365 else 366 { 367 upper_bound = f77_get_upperbound (type); 368 fprintf_filtered (stream, "character*%d", upper_bound); 369 } 370 break; 371 372 case TYPE_CODE_STRUCT: 373 case TYPE_CODE_UNION: 374 if (TYPE_CODE (type) == TYPE_CODE_UNION) 375 fprintfi_filtered (level, stream, "Type, C_Union :: "); 376 else 377 fprintfi_filtered (level, stream, "Type "); 378 fputs_filtered (TYPE_NAME (type), stream); 379 /* According to the definition, 380 we only print structure elements in case show > 0. */ 381 if (show > 0) 382 { 383 fputs_filtered ("\n", stream); 384 for (index = 0; index < TYPE_NFIELDS (type); index++) 385 { 386 f_type_print_base (TYPE_FIELD_TYPE (type, index), stream, 387 show - 1, level + 4); 388 fputs_filtered (" :: ", stream); 389 fputs_filtered (TYPE_FIELD_NAME (type, index), stream); 390 f_type_print_varspec_suffix (TYPE_FIELD_TYPE (type, index), 391 stream, show - 1, 0, 0, 0); 392 fputs_filtered ("\n", stream); 393 } 394 fprintfi_filtered (level, stream, "End Type "); 395 fputs_filtered (TYPE_NAME (type), stream); 396 } 397 break; 398 399 case TYPE_CODE_MODULE: 400 fprintfi_filtered (level, stream, "module %s", TYPE_NAME (type)); 401 break; 402 403 default_case: 404 default: 405 /* Handle types not explicitly handled by the other cases, 406 such as fundamental types. For these, just print whatever 407 the type name is, as recorded in the type itself. If there 408 is no type name, then complain. */ 409 if (TYPE_NAME (type) != NULL) 410 fprintfi_filtered (level, stream, "%s", TYPE_NAME (type)); 411 else 412 error (_("Invalid type code (%d) in symbol table."), TYPE_CODE (type)); 413 break; 414 } 415} 416