1 /* Support for printing Fortran types for GDB, the GNU debugger. 2 3 Copyright (C) 1986-2013 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 34 #include "gdb_string.h" 35 #include <errno.h> 36 37 #if 0 /* Currently unused. */ 38 static void f_type_print_args (struct type *, struct ui_file *); 39 #endif 40 41 static void f_type_print_varspec_suffix (struct type *, struct ui_file *, int, 42 int, int, int); 43 44 void f_type_print_varspec_prefix (struct type *, struct ui_file *, 45 int, int); 46 47 void f_type_print_base (struct type *, struct ui_file *, int, int); 48 49 50 /* LEVEL is the depth to indent lines by. */ 51 52 void 53 f_print_type (struct type *type, const char *varstring, struct ui_file *stream, 54 int show, int level, const struct type_print_options *flags) 55 { 56 enum type_code code; 57 int demangled_args; 58 59 f_type_print_base (type, stream, show, level); 60 code = TYPE_CODE (type); 61 if ((varstring != NULL && *varstring != '\0') 62 /* Need a space if going to print stars or brackets; 63 but not if we will print just a type name. */ 64 || ((show > 0 || TYPE_NAME (type) == 0) 65 && (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC 66 || code == TYPE_CODE_METHOD 67 || code == TYPE_CODE_ARRAY 68 || code == TYPE_CODE_REF))) 69 fputs_filtered (" ", stream); 70 f_type_print_varspec_prefix (type, stream, show, 0); 71 72 if (varstring != NULL) 73 { 74 fputs_filtered (varstring, stream); 75 76 /* For demangled function names, we have the arglist as part of the name, 77 so don't print an additional pair of ()'s. */ 78 79 demangled_args = varstring[strlen (varstring) - 1] == ')'; 80 f_type_print_varspec_suffix (type, stream, show, 0, demangled_args, 0); 81 } 82 } 83 84 /* Print any asterisks or open-parentheses needed before the 85 variable name (to describe its type). 86 87 On outermost call, pass 0 for PASSED_A_PTR. 88 On outermost call, SHOW > 0 means should ignore 89 any typename for TYPE and show its details. 90 SHOW is always zero on recursive calls. */ 91 92 void 93 f_type_print_varspec_prefix (struct type *type, struct ui_file *stream, 94 int show, int passed_a_ptr) 95 { 96 if (type == 0) 97 return; 98 99 if (TYPE_NAME (type) && show <= 0) 100 return; 101 102 QUIT; 103 104 switch (TYPE_CODE (type)) 105 { 106 case TYPE_CODE_PTR: 107 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1); 108 break; 109 110 case TYPE_CODE_FUNC: 111 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0); 112 if (passed_a_ptr) 113 fprintf_filtered (stream, "("); 114 break; 115 116 case TYPE_CODE_ARRAY: 117 f_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 0); 118 break; 119 120 case TYPE_CODE_UNDEF: 121 case TYPE_CODE_STRUCT: 122 case TYPE_CODE_UNION: 123 case TYPE_CODE_ENUM: 124 case TYPE_CODE_INT: 125 case TYPE_CODE_FLT: 126 case TYPE_CODE_VOID: 127 case TYPE_CODE_ERROR: 128 case TYPE_CODE_CHAR: 129 case TYPE_CODE_BOOL: 130 case TYPE_CODE_SET: 131 case TYPE_CODE_RANGE: 132 case TYPE_CODE_STRING: 133 case TYPE_CODE_METHOD: 134 case TYPE_CODE_REF: 135 case TYPE_CODE_COMPLEX: 136 case TYPE_CODE_TYPEDEF: 137 /* These types need no prefix. They are listed here so that 138 gcc -Wall will reveal any types that haven't been handled. */ 139 break; 140 } 141 } 142 143 /* Print any array sizes, function arguments or close parentheses 144 needed after the variable name (to describe its type). 145 Args work like c_type_print_varspec_prefix. */ 146 147 static void 148 f_type_print_varspec_suffix (struct type *type, struct ui_file *stream, 149 int show, int passed_a_ptr, int demangled_args, 150 int arrayprint_recurse_level) 151 { 152 int upper_bound, lower_bound; 153 154 /* No static variables are permitted as an error call may occur during 155 execution of this function. */ 156 157 if (type == 0) 158 return; 159 160 if (TYPE_NAME (type) && show <= 0) 161 return; 162 163 QUIT; 164 165 switch (TYPE_CODE (type)) 166 { 167 case TYPE_CODE_ARRAY: 168 arrayprint_recurse_level++; 169 170 if (arrayprint_recurse_level == 1) 171 fprintf_filtered (stream, "("); 172 173 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_ARRAY) 174 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0, 0, 175 arrayprint_recurse_level); 176 177 lower_bound = f77_get_lowerbound (type); 178 if (lower_bound != 1) /* Not the default. */ 179 fprintf_filtered (stream, "%d:", lower_bound); 180 181 /* Make sure that, if we have an assumed size array, we 182 print out a warning and print the upperbound as '*'. */ 183 184 if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) 185 fprintf_filtered (stream, "*"); 186 else 187 { 188 upper_bound = f77_get_upperbound (type); 189 fprintf_filtered (stream, "%d", upper_bound); 190 } 191 192 if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_ARRAY) 193 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0, 0, 194 arrayprint_recurse_level); 195 if (arrayprint_recurse_level == 1) 196 fprintf_filtered (stream, ")"); 197 else 198 fprintf_filtered (stream, ","); 199 arrayprint_recurse_level--; 200 break; 201 202 case TYPE_CODE_PTR: 203 case TYPE_CODE_REF: 204 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 1, 0, 205 arrayprint_recurse_level); 206 fprintf_filtered (stream, ")"); 207 break; 208 209 case TYPE_CODE_FUNC: 210 f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 211 passed_a_ptr, 0, arrayprint_recurse_level); 212 if (passed_a_ptr) 213 fprintf_filtered (stream, ")"); 214 215 fprintf_filtered (stream, "()"); 216 break; 217 218 case TYPE_CODE_UNDEF: 219 case TYPE_CODE_STRUCT: 220 case TYPE_CODE_UNION: 221 case TYPE_CODE_ENUM: 222 case TYPE_CODE_INT: 223 case TYPE_CODE_FLT: 224 case TYPE_CODE_VOID: 225 case TYPE_CODE_ERROR: 226 case TYPE_CODE_CHAR: 227 case TYPE_CODE_BOOL: 228 case TYPE_CODE_SET: 229 case TYPE_CODE_RANGE: 230 case TYPE_CODE_STRING: 231 case TYPE_CODE_METHOD: 232 case TYPE_CODE_COMPLEX: 233 case TYPE_CODE_TYPEDEF: 234 /* These types do not need a suffix. They are listed so that 235 gcc -Wall will report types that may not have been considered. */ 236 break; 237 } 238 } 239 240 /* Print the name of the type (or the ultimate pointer target, 241 function value or array element), or the description of a 242 structure or union. 243 244 SHOW nonzero means don't print this type as just its name; 245 show its real definition even if it has a name. 246 SHOW zero means print just typename or struct tag if there is one 247 SHOW negative means abbreviate structure elements. 248 SHOW is decremented for printing of structure elements. 249 250 LEVEL is the depth to indent by. 251 We increase it for some recursive calls. */ 252 253 void 254 f_type_print_base (struct type *type, struct ui_file *stream, int show, 255 int level) 256 { 257 int upper_bound; 258 int index; 259 260 QUIT; 261 262 wrap_here (" "); 263 if (type == NULL) 264 { 265 fputs_filtered ("<type unknown>", stream); 266 return; 267 } 268 269 /* When SHOW is zero or less, and there is a valid type name, then always 270 just print the type name directly from the type. */ 271 272 if ((show <= 0) && (TYPE_NAME (type) != NULL)) 273 { 274 fputs_filtered (TYPE_NAME (type), stream); 275 return; 276 } 277 278 if (TYPE_CODE (type) != TYPE_CODE_TYPEDEF) 279 CHECK_TYPEDEF (type); 280 281 switch (TYPE_CODE (type)) 282 { 283 case TYPE_CODE_TYPEDEF: 284 f_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level); 285 break; 286 287 case TYPE_CODE_ARRAY: 288 case TYPE_CODE_FUNC: 289 f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level); 290 break; 291 292 case TYPE_CODE_PTR: 293 fprintf_filtered (stream, "PTR TO -> ( "); 294 f_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level); 295 break; 296 297 case TYPE_CODE_REF: 298 fprintf_filtered (stream, "REF TO -> ( "); 299 f_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level); 300 break; 301 302 case TYPE_CODE_VOID: 303 fprintfi_filtered (level, stream, "VOID"); 304 break; 305 306 case TYPE_CODE_UNDEF: 307 fprintfi_filtered (level, stream, "struct <unknown>"); 308 break; 309 310 case TYPE_CODE_ERROR: 311 fprintfi_filtered (level, stream, "%s", TYPE_ERROR_NAME (type)); 312 break; 313 314 case TYPE_CODE_RANGE: 315 /* This should not occur. */ 316 fprintfi_filtered (level, stream, "<range type>"); 317 break; 318 319 case TYPE_CODE_CHAR: 320 case TYPE_CODE_INT: 321 /* There may be some character types that attempt to come 322 through as TYPE_CODE_INT since dbxstclass.h is so 323 C-oriented, we must change these to "character" from "char". */ 324 325 if (strcmp (TYPE_NAME (type), "char") == 0) 326 fprintfi_filtered (level, stream, "character"); 327 else 328 goto default_case; 329 break; 330 331 case TYPE_CODE_STRING: 332 /* Strings may have dynamic upperbounds (lengths) like arrays. */ 333 334 if (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) 335 fprintfi_filtered (level, stream, "character*(*)"); 336 else 337 { 338 upper_bound = f77_get_upperbound (type); 339 fprintf_filtered (stream, "character*%d", upper_bound); 340 } 341 break; 342 343 case TYPE_CODE_STRUCT: 344 case TYPE_CODE_UNION: 345 if (TYPE_CODE (type) == TYPE_CODE_UNION) 346 fprintfi_filtered (level, stream, "Type, C_Union :: "); 347 else 348 fprintfi_filtered (level, stream, "Type "); 349 fputs_filtered (TYPE_TAG_NAME (type), stream); 350 fputs_filtered ("\n", stream); 351 for (index = 0; index < TYPE_NFIELDS (type); index++) 352 { 353 f_type_print_base (TYPE_FIELD_TYPE (type, index), stream, show, 354 level + 4); 355 fputs_filtered (" :: ", stream); 356 fputs_filtered (TYPE_FIELD_NAME (type, index), stream); 357 f_type_print_varspec_suffix (TYPE_FIELD_TYPE (type, index), 358 stream, 0, 0, 0, 0); 359 fputs_filtered ("\n", stream); 360 } 361 fprintfi_filtered (level, stream, "End Type "); 362 fputs_filtered (TYPE_TAG_NAME (type), stream); 363 break; 364 365 case TYPE_CODE_MODULE: 366 fprintfi_filtered (level, stream, "module %s", TYPE_TAG_NAME (type)); 367 break; 368 369 default_case: 370 default: 371 /* Handle types not explicitly handled by the other cases, 372 such as fundamental types. For these, just print whatever 373 the type name is, as recorded in the type itself. If there 374 is no type name, then complain. */ 375 if (TYPE_NAME (type) != NULL) 376 fprintfi_filtered (level, stream, "%s", TYPE_NAME (type)); 377 else 378 error (_("Invalid type code (%d) in symbol table."), TYPE_CODE (type)); 379 break; 380 } 381 } 382