| 1 | /* Support for printing Java types for GDB, the GNU debugger. |
| 2 | Copyright 1997 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "symtab.h" |
| 23 | #include "gdbtypes.h" |
| 24 | #include "value.h" |
| 25 | #include "demangle.h" |
| 26 | #include "jv-lang.h" |
| 27 | #include "gdb_string.h" |
| 28 | |
| 29 | static void |
| 30 | java_type_print_derivation_info (stream, type) |
| 31 | GDB_FILE *stream; |
| 32 | struct type *type; |
| 33 | { |
| 34 | char *name; |
| 35 | int i = 0; |
| 36 | int n_bases = TYPE_N_BASECLASSES (type); |
| 37 | int prev = 0; |
| 38 | |
| 39 | for (i = 0; i < n_bases; i++) |
| 40 | { |
| 41 | int kind = BASETYPE_VIA_VIRTUAL(type, i) ? 'I' : 'E'; |
| 42 | fputs_filtered (kind == prev ? ", " |
| 43 | : kind == 'I' ? " implements " |
| 44 | : " extends ", |
| 45 | stream); |
| 46 | prev = kind; |
| 47 | name = type_name_no_tag (TYPE_BASECLASS (type, i)); |
| 48 | fprintf_filtered (stream, "%s", name ? name : "(null)"); |
| 49 | } |
| 50 | if (i > 0) |
| 51 | { |
| 52 | fputs_filtered (" ", stream); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | /* Print the name of the type (or the ultimate pointer target, |
| 57 | function value or array element), or the description of a |
| 58 | structure or union. |
| 59 | |
| 60 | SHOW positive means print details about the type (e.g. enum values), |
| 61 | and print structure elements passing SHOW - 1 for show. |
| 62 | SHOW negative means just print the type name or struct tag if there is one. |
| 63 | If there is no name, print something sensible but concise like |
| 64 | "struct {...}". |
| 65 | SHOW zero means just print the type name or struct tag if there is one. |
| 66 | If there is no name, print something sensible but not as concise like |
| 67 | "struct {int x; int y;}". |
| 68 | |
| 69 | LEVEL is the number of spaces to indent by. |
| 70 | We increase it for some recursive calls. */ |
| 71 | |
| 72 | void |
| 73 | java_type_print_base (type, stream, show, level) |
| 74 | struct type *type; |
| 75 | GDB_FILE *stream; |
| 76 | int show; |
| 77 | int level; |
| 78 | { |
| 79 | register int i; |
| 80 | register int len; |
| 81 | char *mangled_name; |
| 82 | char *demangled_name; |
| 83 | QUIT; |
| 84 | |
| 85 | wrap_here (" "); |
| 86 | if (type == NULL) |
| 87 | { |
| 88 | fputs_filtered ("<type unknown>", stream); |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | /* When SHOW is zero or less, and there is a valid type name, then always |
| 93 | just print the type name directly from the type. */ |
| 94 | |
| 95 | if (show <= 0 |
| 96 | && TYPE_NAME (type) != NULL) |
| 97 | { |
| 98 | fputs_filtered (TYPE_NAME (type), stream); |
| 99 | return; |
| 100 | } |
| 101 | |
| 102 | CHECK_TYPEDEF (type); |
| 103 | |
| 104 | switch (TYPE_CODE (type)) |
| 105 | { |
| 106 | case TYPE_CODE_PTR: |
| 107 | java_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level); |
| 108 | break; |
| 109 | |
| 110 | case TYPE_CODE_STRUCT: |
| 111 | if (TYPE_TAG_NAME (type) != NULL && TYPE_TAG_NAME (type)[0] == '[') |
| 112 | { /* array type */ |
| 113 | char *name = java_demangle_type_signature (TYPE_TAG_NAME (type)); |
| 114 | fputs_filtered (name, stream); |
| 115 | free (name); |
| 116 | break; |
| 117 | } |
| 118 | if (show >= 0) |
| 119 | fprintf_filtered (stream, "class "); |
| 120 | if (TYPE_TAG_NAME (type) != NULL) |
| 121 | { |
| 122 | fputs_filtered (TYPE_TAG_NAME (type), stream); |
| 123 | if (show > 0) |
| 124 | fputs_filtered (" ", stream); |
| 125 | } |
| 126 | wrap_here (" "); |
| 127 | if (show < 0) |
| 128 | { |
| 129 | /* If we just printed a tag name, no need to print anything else. */ |
| 130 | if (TYPE_TAG_NAME (type) == NULL) |
| 131 | fprintf_filtered (stream, "{...}"); |
| 132 | } |
| 133 | else if (show > 0 || TYPE_TAG_NAME (type) == NULL) |
| 134 | { |
| 135 | java_type_print_derivation_info (stream, type); |
| 136 | |
| 137 | fprintf_filtered (stream, "{\n"); |
| 138 | if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0)) |
| 139 | { |
| 140 | if (TYPE_FLAGS (type) & TYPE_FLAG_STUB) |
| 141 | fprintfi_filtered (level + 4, stream, "<incomplete type>\n"); |
| 142 | else |
| 143 | fprintfi_filtered (level + 4, stream, "<no data fields>\n"); |
| 144 | } |
| 145 | |
| 146 | /* If there is a base class for this type, |
| 147 | do not print the field that it occupies. */ |
| 148 | |
| 149 | len = TYPE_NFIELDS (type); |
| 150 | for (i = TYPE_N_BASECLASSES (type); i < len; i++) |
| 151 | { |
| 152 | QUIT; |
| 153 | /* Don't print out virtual function table. */ |
| 154 | if (STREQN (TYPE_FIELD_NAME (type, i), "_vptr", 5) |
| 155 | && is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5])) |
| 156 | continue; |
| 157 | |
| 158 | /* Don't print the dummy field "class". */ |
| 159 | if (STREQN (TYPE_FIELD_NAME (type, i), "class", 5)) |
| 160 | continue; |
| 161 | |
| 162 | print_spaces_filtered (level + 4, stream); |
| 163 | if (HAVE_CPLUS_STRUCT (type)) |
| 164 | { |
| 165 | if (TYPE_FIELD_PROTECTED (type, i)) |
| 166 | fprintf_filtered (stream, "protected "); |
| 167 | else if (TYPE_FIELD_PRIVATE (type, i)) |
| 168 | fprintf_filtered (stream, "private "); |
| 169 | else |
| 170 | fprintf_filtered (stream, "public "); |
| 171 | } |
| 172 | |
| 173 | if (TYPE_FIELD_STATIC (type, i)) |
| 174 | { |
| 175 | fprintf_filtered (stream, "static "); |
| 176 | } |
| 177 | java_print_type (TYPE_FIELD_TYPE (type, i), |
| 178 | TYPE_FIELD_NAME (type, i), |
| 179 | stream, show - 1, level + 4); |
| 180 | fprintf_filtered (stream, ";\n"); |
| 181 | } |
| 182 | |
| 183 | /* If there are both fields and methods, put a space between. */ |
| 184 | len = TYPE_NFN_FIELDS (type); |
| 185 | if (len) |
| 186 | fprintf_filtered (stream, "\n"); |
| 187 | |
| 188 | /* Print out the methods */ |
| 189 | |
| 190 | for (i = 0; i < len; i++) |
| 191 | { |
| 192 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i); |
| 193 | int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i); |
| 194 | char *method_name = TYPE_FN_FIELDLIST_NAME (type, i); |
| 195 | char *name = type_name_no_tag (type); |
| 196 | int is_constructor = name && STREQ(method_name, name); |
| 197 | for (j = 0; j < len2; j++) |
| 198 | { |
| 199 | char *physname = TYPE_FN_FIELD_PHYSNAME (f, j); |
| 200 | int is_full_physname_constructor = |
| 201 | ((physname[0] == '_' && physname[1] == '_' |
| 202 | && strchr ("0123456789Qt", physname[2])) |
| 203 | || STREQN (physname, "__ct__", 6) |
| 204 | || DESTRUCTOR_PREFIX_P (physname) |
| 205 | || STREQN (physname, "__dt__", 6)); |
| 206 | |
| 207 | QUIT; |
| 208 | print_spaces_filtered (level + 4, stream); |
| 209 | if (TYPE_FN_FIELD_PROTECTED (f, j)) |
| 210 | fprintf_filtered (stream, "protected "); |
| 211 | else if (TYPE_FN_FIELD_PRIVATE (f, j)) |
| 212 | fprintf_filtered (stream, "private "); |
| 213 | else |
| 214 | fprintf_filtered (stream, "public "); |
| 215 | |
| 216 | if (TYPE_FN_FIELD_VIRTUAL_P (f, j)) |
| 217 | fprintf_filtered (stream, "virtual "); |
| 218 | else if (TYPE_FN_FIELD_STATIC_P (f, j)) |
| 219 | fprintf_filtered (stream, "static "); |
| 220 | if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0) |
| 221 | { |
| 222 | /* Keep GDB from crashing here. */ |
| 223 | fprintf_filtered (stream, "<undefined type> %s;\n", |
| 224 | TYPE_FN_FIELD_PHYSNAME (f, j)); |
| 225 | break; |
| 226 | } |
| 227 | else if (!is_constructor && !is_full_physname_constructor) |
| 228 | { |
| 229 | type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)), |
| 230 | "", stream, -1); |
| 231 | fputs_filtered (" ", stream); |
| 232 | } |
| 233 | if (TYPE_FN_FIELD_STUB (f, j)) |
| 234 | /* Build something we can demangle. */ |
| 235 | mangled_name = gdb_mangle_name (type, i, j); |
| 236 | else |
| 237 | mangled_name = TYPE_FN_FIELD_PHYSNAME (f, j); |
| 238 | |
| 239 | demangled_name = |
| 240 | cplus_demangle (mangled_name, |
| 241 | DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA); |
| 242 | if (demangled_name == NULL) |
| 243 | fprintf_filtered (stream, "<badly mangled name '%s'>", |
| 244 | mangled_name); |
| 245 | else |
| 246 | { |
| 247 | char *demangled_no_class = demangled_name; |
| 248 | char *ptr = demangled_name; |
| 249 | for ( ; ; ) |
| 250 | { |
| 251 | char c = *ptr++; |
| 252 | if (c == 0 || c == '(') |
| 253 | break; |
| 254 | if (c == '.') |
| 255 | demangled_no_class = ptr; |
| 256 | } |
| 257 | fputs_filtered (demangled_no_class, stream); |
| 258 | free (demangled_name); |
| 259 | } |
| 260 | |
| 261 | if (TYPE_FN_FIELD_STUB (f, j)) |
| 262 | free (mangled_name); |
| 263 | |
| 264 | fprintf_filtered (stream, ";\n"); |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | fprintfi_filtered (level, stream, "}"); |
| 269 | } |
| 270 | break; |
| 271 | |
| 272 | default: |
| 273 | c_type_print_base (type, stream, show, level); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /* LEVEL is the depth to indent lines by. */ |
| 278 | |
| 279 | void |
| 280 | java_print_type (type, varstring, stream, show, level) |
| 281 | struct type *type; |
| 282 | char *varstring; |
| 283 | GDB_FILE *stream; |
| 284 | int show; |
| 285 | int level; |
| 286 | { |
| 287 | java_type_print_base (type, stream, show, level); |
| 288 | |
| 289 | if (varstring != NULL && *varstring != '\0') |
| 290 | { |
| 291 | fputs_filtered (" ", stream); |
| 292 | fputs_filtered (varstring, stream); |
| 293 | } |
| 294 | #if 0 |
| 295 | /* For demangled function names, we have the arglist as part of the name, |
| 296 | so don't print an additional pair of ()'s */ |
| 297 | |
| 298 | demangled_args = strchr(varstring, '(') != NULL; |
| 299 | c_type_print_varspec_suffix (type, stream, show, 0, demangled_args); |
| 300 | #endif |
| 301 | } |