| 1 | /* Source-language-related definitions for GDB. |
| 2 | |
| 3 | Copyright (C) 1991-2017 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by the Department of Computer Science at the State University |
| 6 | of New York at Buffalo. |
| 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 | #if !defined (LANGUAGE_H) |
| 24 | #define LANGUAGE_H 1 |
| 25 | |
| 26 | #include "symtab.h" |
| 27 | #include "common/function-view.h" |
| 28 | |
| 29 | /* Forward decls for prototypes. */ |
| 30 | struct value; |
| 31 | struct objfile; |
| 32 | struct frame_info; |
| 33 | struct expression; |
| 34 | struct ui_file; |
| 35 | struct value_print_options; |
| 36 | struct type_print_options; |
| 37 | struct lang_varobj_ops; |
| 38 | struct parser_state; |
| 39 | struct compile_instance; |
| 40 | |
| 41 | #define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims. */ |
| 42 | |
| 43 | /* range_mode == |
| 44 | range_mode_auto: range_check set automatically to default of language. |
| 45 | range_mode_manual: range_check set manually by user. */ |
| 46 | |
| 47 | extern enum range_mode |
| 48 | { |
| 49 | range_mode_auto, range_mode_manual |
| 50 | } |
| 51 | range_mode; |
| 52 | |
| 53 | /* range_check == |
| 54 | range_check_on: Ranges are checked in GDB expressions, producing errors. |
| 55 | range_check_warn: Ranges are checked, producing warnings. |
| 56 | range_check_off: Ranges are not checked in GDB expressions. */ |
| 57 | |
| 58 | extern enum range_check |
| 59 | { |
| 60 | range_check_off, range_check_warn, range_check_on |
| 61 | } |
| 62 | range_check; |
| 63 | |
| 64 | /* case_mode == |
| 65 | case_mode_auto: case_sensitivity set upon selection of scope. |
| 66 | case_mode_manual: case_sensitivity set only by user. */ |
| 67 | |
| 68 | extern enum case_mode |
| 69 | { |
| 70 | case_mode_auto, case_mode_manual |
| 71 | } |
| 72 | case_mode; |
| 73 | |
| 74 | /* array_ordering == |
| 75 | array_row_major: Arrays are in row major order. |
| 76 | array_column_major: Arrays are in column major order. */ |
| 77 | |
| 78 | extern enum array_ordering |
| 79 | { |
| 80 | array_row_major, array_column_major |
| 81 | } |
| 82 | array_ordering; |
| 83 | |
| 84 | |
| 85 | /* case_sensitivity == |
| 86 | case_sensitive_on: Case sensitivity in name matching is used. |
| 87 | case_sensitive_off: Case sensitivity in name matching is not used. */ |
| 88 | |
| 89 | extern enum case_sensitivity |
| 90 | { |
| 91 | case_sensitive_on, case_sensitive_off |
| 92 | } |
| 93 | case_sensitivity; |
| 94 | |
| 95 | |
| 96 | /* macro_expansion == |
| 97 | macro_expansion_no: No macro expansion is available. |
| 98 | macro_expansion_c: C-like macro expansion is available. */ |
| 99 | |
| 100 | enum macro_expansion |
| 101 | { |
| 102 | macro_expansion_no, macro_expansion_c |
| 103 | }; |
| 104 | |
| 105 | \f |
| 106 | /* Per architecture (OS/ABI) language information. */ |
| 107 | |
| 108 | struct language_arch_info |
| 109 | { |
| 110 | /* Its primitive types. This is a vector ended by a NULL pointer. |
| 111 | These types can be specified by name in parsing types in |
| 112 | expressions, regardless of whether the program being debugged |
| 113 | actually defines such a type. */ |
| 114 | struct type **primitive_type_vector; |
| 115 | |
| 116 | /* Symbol wrappers around primitive_type_vector, so that the symbol lookup |
| 117 | machinery can return them. */ |
| 118 | struct symbol **primitive_type_symbols; |
| 119 | |
| 120 | /* Type of elements of strings. */ |
| 121 | struct type *string_char_type; |
| 122 | |
| 123 | /* Symbol name of type to use as boolean type, if defined. */ |
| 124 | const char *bool_type_symbol; |
| 125 | /* Otherwise, this is the default boolean builtin type. */ |
| 126 | struct type *bool_type_default; |
| 127 | }; |
| 128 | |
| 129 | /* A pointer to a function expected to return nonzero if |
| 130 | SYMBOL_SEARCH_NAME matches the given LOOKUP_NAME. |
| 131 | |
| 132 | SYMBOL_SEARCH_NAME should be a symbol's "search" name. |
| 133 | LOOKUP_NAME should be the name of an entity after it has been |
| 134 | transformed for lookup. */ |
| 135 | |
| 136 | typedef int (*symbol_name_cmp_ftype) (const char *symbol_search_name, |
| 137 | const char *lookup_name); |
| 138 | |
| 139 | /* Structure tying together assorted information about a language. */ |
| 140 | |
| 141 | struct language_defn |
| 142 | { |
| 143 | /* Name of the language. */ |
| 144 | |
| 145 | const char *la_name; |
| 146 | |
| 147 | /* Natural or official name of the language. */ |
| 148 | |
| 149 | const char *la_natural_name; |
| 150 | |
| 151 | /* its symtab language-enum (defs.h). */ |
| 152 | |
| 153 | enum language la_language; |
| 154 | |
| 155 | /* Default range checking. */ |
| 156 | |
| 157 | enum range_check la_range_check; |
| 158 | |
| 159 | /* Default case sensitivity. */ |
| 160 | enum case_sensitivity la_case_sensitivity; |
| 161 | |
| 162 | /* Multi-dimensional array ordering. */ |
| 163 | enum array_ordering la_array_ordering; |
| 164 | |
| 165 | /* Style of macro expansion, if any, supported by this language. */ |
| 166 | enum macro_expansion la_macro_expansion; |
| 167 | |
| 168 | /* A NULL-terminated array of file extensions for this language. |
| 169 | The extension must include the ".", like ".c". If this |
| 170 | language doesn't need to provide any filename extensions, this |
| 171 | may be NULL. */ |
| 172 | |
| 173 | const char *const *la_filename_extensions; |
| 174 | |
| 175 | /* Definitions related to expression printing, prefixifying, and |
| 176 | dumping. */ |
| 177 | |
| 178 | const struct exp_descriptor *la_exp_desc; |
| 179 | |
| 180 | /* Parser function. */ |
| 181 | |
| 182 | int (*la_parser) (struct parser_state *); |
| 183 | |
| 184 | /* Parser error function. */ |
| 185 | |
| 186 | void (*la_error) (const char *); |
| 187 | |
| 188 | /* Given an expression *EXPP created by prefixifying the result of |
| 189 | la_parser, perform any remaining processing necessary to complete |
| 190 | its translation. *EXPP may change; la_post_parser is responsible |
| 191 | for releasing its previous contents, if necessary. If |
| 192 | VOID_CONTEXT_P, then no value is expected from the expression. */ |
| 193 | |
| 194 | void (*la_post_parser) (struct expression ** expp, int void_context_p); |
| 195 | |
| 196 | void (*la_printchar) (int ch, struct type *chtype, |
| 197 | struct ui_file * stream); |
| 198 | |
| 199 | void (*la_printstr) (struct ui_file * stream, struct type *elttype, |
| 200 | const gdb_byte *string, unsigned int length, |
| 201 | const char *encoding, int force_ellipses, |
| 202 | const struct value_print_options *); |
| 203 | |
| 204 | void (*la_emitchar) (int ch, struct type *chtype, |
| 205 | struct ui_file * stream, int quoter); |
| 206 | |
| 207 | /* Print a type using syntax appropriate for this language. */ |
| 208 | |
| 209 | void (*la_print_type) (struct type *, const char *, struct ui_file *, int, |
| 210 | int, const struct type_print_options *); |
| 211 | |
| 212 | /* Print a typedef using syntax appropriate for this language. |
| 213 | TYPE is the underlying type. NEW_SYMBOL is the symbol naming |
| 214 | the type. STREAM is the output stream on which to print. */ |
| 215 | |
| 216 | void (*la_print_typedef) (struct type *type, struct symbol *new_symbol, |
| 217 | struct ui_file *stream); |
| 218 | |
| 219 | /* Print a value using syntax appropriate for this language. |
| 220 | |
| 221 | TYPE is the type of the sub-object to be printed. |
| 222 | |
| 223 | EMBEDDED_OFFSET is the offset into the outermost object of the |
| 224 | sub-object represented by TYPE. This is the object which this |
| 225 | call should print. Note that the enclosing type is not |
| 226 | available. |
| 227 | |
| 228 | ADDRESS is the address in the inferior of the enclosing object. |
| 229 | |
| 230 | STREAM is the stream on which the value is to be printed. |
| 231 | |
| 232 | RECURSE is the recursion depth. It is zero-based. |
| 233 | |
| 234 | OPTIONS are the formatting options to be used when |
| 235 | printing. */ |
| 236 | |
| 237 | void (*la_val_print) (struct type *type, |
| 238 | int embedded_offset, CORE_ADDR address, |
| 239 | struct ui_file *stream, int recurse, |
| 240 | struct value *val, |
| 241 | const struct value_print_options *options); |
| 242 | |
| 243 | /* Print a top-level value using syntax appropriate for this language. */ |
| 244 | |
| 245 | void (*la_value_print) (struct value *, struct ui_file *, |
| 246 | const struct value_print_options *); |
| 247 | |
| 248 | /* Given a symbol VAR, the corresponding block VAR_BLOCK (if any) and a |
| 249 | stack frame id FRAME, read the value of the variable and return (pointer |
| 250 | to a) struct value containing the value. |
| 251 | |
| 252 | VAR_BLOCK is needed if there's a possibility for VAR to be outside |
| 253 | FRAME. This is what happens if FRAME correspond to a nested function |
| 254 | and VAR is defined in the outer function. If callers know that VAR is |
| 255 | located in FRAME or is global/static, NULL can be passed as VAR_BLOCK. |
| 256 | |
| 257 | Throw an error if the variable cannot be found. */ |
| 258 | |
| 259 | struct value *(*la_read_var_value) (struct symbol *var, |
| 260 | const struct block *var_block, |
| 261 | struct frame_info *frame); |
| 262 | |
| 263 | /* PC is possibly an unknown languages trampoline. |
| 264 | If that PC falls in a trampoline belonging to this language, |
| 265 | return the address of the first pc in the real function, or 0 |
| 266 | if it isn't a language tramp for this language. */ |
| 267 | CORE_ADDR (*skip_trampoline) (struct frame_info *, CORE_ADDR); |
| 268 | |
| 269 | /* Now come some hooks for lookup_symbol. */ |
| 270 | |
| 271 | /* If this is non-NULL, specifies the name that of the implicit |
| 272 | local variable that refers to the current object instance. */ |
| 273 | |
| 274 | const char *la_name_of_this; |
| 275 | |
| 276 | /* This is a function that lookup_symbol will call when it gets to |
| 277 | the part of symbol lookup where C looks up static and global |
| 278 | variables. */ |
| 279 | |
| 280 | struct block_symbol (*la_lookup_symbol_nonlocal) |
| 281 | (const struct language_defn *, |
| 282 | const char *, |
| 283 | const struct block *, |
| 284 | const domain_enum); |
| 285 | |
| 286 | /* Find the definition of the type with the given name. */ |
| 287 | struct type *(*la_lookup_transparent_type) (const char *); |
| 288 | |
| 289 | /* Return demangled language symbol, or NULL. */ |
| 290 | char *(*la_demangle) (const char *mangled, int options); |
| 291 | |
| 292 | /* Demangle a symbol according to this language's rules. Unlike |
| 293 | la_demangle, this does not take any options. |
| 294 | |
| 295 | *DEMANGLED will be set by this function. |
| 296 | |
| 297 | If this function returns 0, then *DEMANGLED must always be set |
| 298 | to NULL. |
| 299 | |
| 300 | If this function returns 1, the implementation may set this to |
| 301 | a xmalloc'd string holding the demangled form. However, it is |
| 302 | not required to. The string, if any, is owned by the caller. |
| 303 | |
| 304 | The resulting string should be of the form that will be |
| 305 | installed into a symbol. */ |
| 306 | int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled); |
| 307 | |
| 308 | /* Return class name of a mangled method name or NULL. */ |
| 309 | char *(*la_class_name_from_physname) (const char *physname); |
| 310 | |
| 311 | /* Table for printing expressions. */ |
| 312 | |
| 313 | const struct op_print *la_op_print_tab; |
| 314 | |
| 315 | /* Zero if the language has first-class arrays. True if there are no |
| 316 | array values, and array objects decay to pointers, as in C. */ |
| 317 | |
| 318 | char c_style_arrays; |
| 319 | |
| 320 | /* Index to use for extracting the first element of a string. */ |
| 321 | char string_lower_bound; |
| 322 | |
| 323 | /* The list of characters forming word boundaries. */ |
| 324 | const char *(*la_word_break_characters) (void); |
| 325 | |
| 326 | /* Add to the completion tracker all symbols which are possible |
| 327 | completions for TEXT. WORD is the entire command on which the |
| 328 | completion is being made. If CODE is TYPE_CODE_UNDEF, then all |
| 329 | symbols should be examined; otherwise, only STRUCT_DOMAIN |
| 330 | symbols whose type has a code of CODE should be matched. */ |
| 331 | void (*la_collect_symbol_completion_matches) |
| 332 | (completion_tracker &tracker, |
| 333 | const char *text, |
| 334 | const char *word, |
| 335 | enum type_code code); |
| 336 | |
| 337 | /* The per-architecture (OS/ABI) language information. */ |
| 338 | void (*la_language_arch_info) (struct gdbarch *, |
| 339 | struct language_arch_info *); |
| 340 | |
| 341 | /* Print the index of an element of an array. */ |
| 342 | void (*la_print_array_index) (struct value *index_value, |
| 343 | struct ui_file *stream, |
| 344 | const struct value_print_options *options); |
| 345 | |
| 346 | /* Return non-zero if TYPE should be passed (and returned) by |
| 347 | reference at the language level. */ |
| 348 | int (*la_pass_by_reference) (struct type *type); |
| 349 | |
| 350 | /* Obtain a string from the inferior, storing it in a newly allocated |
| 351 | buffer in BUFFER, which should be freed by the caller. If the |
| 352 | in- and out-parameter *LENGTH is specified at -1, the string is |
| 353 | read until a null character of the appropriate width is found - |
| 354 | otherwise the string is read to the length of characters specified. |
| 355 | On completion, *LENGTH will hold the size of the string in characters. |
| 356 | If a *LENGTH of -1 was specified it will count only actual |
| 357 | characters, excluding any eventual terminating null character. |
| 358 | Otherwise *LENGTH will include all characters - including any nulls. |
| 359 | CHARSET will hold the encoding used in the string. */ |
| 360 | void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length, |
| 361 | struct type **chartype, const char **charset); |
| 362 | |
| 363 | /* Return an expression that can be used for a location |
| 364 | watchpoint. TYPE is a pointer type that points to the memory |
| 365 | to watch, and ADDR is the address of the watched memory. */ |
| 366 | gdb::unique_xmalloc_ptr<char> (*la_watch_location_expression) |
| 367 | (struct type *type, CORE_ADDR addr); |
| 368 | |
| 369 | /* Return a pointer to the function that should be used to match |
| 370 | a symbol name against LOOKUP_NAME. This is mostly for languages |
| 371 | such as Ada where the matching algorithm depends on LOOKUP_NAME. |
| 372 | |
| 373 | This field may be NULL, in which case strcmp_iw will be used |
| 374 | to perform the matching. */ |
| 375 | symbol_name_cmp_ftype (*la_get_symbol_name_cmp) (const char *lookup_name); |
| 376 | |
| 377 | /* Find all symbols in the current program space matching NAME in |
| 378 | DOMAIN, according to this language's rules. |
| 379 | |
| 380 | The search is done in BLOCK only. |
| 381 | The caller is responsible for iterating up through superblocks |
| 382 | if desired. |
| 383 | |
| 384 | For each one, call CALLBACK with the symbol. If CALLBACK |
| 385 | returns false, the iteration ends at that point. |
| 386 | |
| 387 | This field may not be NULL. If the language does not need any |
| 388 | special processing here, 'iterate_over_symbols' should be |
| 389 | used as the definition. */ |
| 390 | void (*la_iterate_over_symbols) |
| 391 | (const struct block *block, const char *name, domain_enum domain, |
| 392 | gdb::function_view<symbol_found_callback_ftype> callback); |
| 393 | |
| 394 | /* Various operations on varobj. */ |
| 395 | const struct lang_varobj_ops *la_varobj_ops; |
| 396 | |
| 397 | /* If this language allows compilation from the gdb command line, |
| 398 | this method should be non-NULL. When called it should return |
| 399 | an instance of struct gcc_context appropriate to the language. |
| 400 | When defined this method must never return NULL; instead it |
| 401 | should throw an exception on failure. The returned compiler |
| 402 | instance is owned by its caller and must be deallocated by |
| 403 | calling its 'destroy' method. */ |
| 404 | |
| 405 | struct compile_instance *(*la_get_compile_instance) (void); |
| 406 | |
| 407 | /* This method must be defined if 'la_get_gcc_context' is defined. |
| 408 | If 'la_get_gcc_context' is not defined, then this method is |
| 409 | ignored. |
| 410 | |
| 411 | This takes the user-supplied text and returns a new bit of code |
| 412 | to compile. |
| 413 | |
| 414 | INST is the compiler instance being used. |
| 415 | INPUT is the user's input text. |
| 416 | GDBARCH is the architecture to use. |
| 417 | EXPR_BLOCK is the block in which the expression is being |
| 418 | parsed. |
| 419 | EXPR_PC is the PC at which the expression is being parsed. */ |
| 420 | |
| 421 | std::string (*la_compute_program) (struct compile_instance *inst, |
| 422 | const char *input, |
| 423 | struct gdbarch *gdbarch, |
| 424 | const struct block *expr_block, |
| 425 | CORE_ADDR expr_pc); |
| 426 | |
| 427 | /* Add fields above this point, so the magic number is always last. */ |
| 428 | /* Magic number for compat checking. */ |
| 429 | |
| 430 | long la_magic; |
| 431 | |
| 432 | }; |
| 433 | |
| 434 | #define LANG_MAGIC 910823L |
| 435 | |
| 436 | /* Pointer to the language_defn for our current language. This pointer |
| 437 | always points to *some* valid struct; it can be used without checking |
| 438 | it for validity. |
| 439 | |
| 440 | The current language affects expression parsing and evaluation |
| 441 | (FIXME: it might be cleaner to make the evaluation-related stuff |
| 442 | separate exp_opcodes for each different set of semantics. We |
| 443 | should at least think this through more clearly with respect to |
| 444 | what happens if the language is changed between parsing and |
| 445 | evaluation) and printing of things like types and arrays. It does |
| 446 | *not* affect symbol-reading-- each source file in a symbol-file has |
| 447 | its own language and we should keep track of that regardless of the |
| 448 | language when symbols are read. If we want some manual setting for |
| 449 | the language of symbol files (e.g. detecting when ".c" files are |
| 450 | C++), it should be a separate setting from the current_language. */ |
| 451 | |
| 452 | extern const struct language_defn *current_language; |
| 453 | |
| 454 | /* Pointer to the language_defn expected by the user, e.g. the language |
| 455 | of main(), or the language we last mentioned in a message, or C. */ |
| 456 | |
| 457 | extern const struct language_defn *expected_language; |
| 458 | |
| 459 | /* language_mode == |
| 460 | language_mode_auto: current_language automatically set upon selection |
| 461 | of scope (e.g. stack frame) |
| 462 | language_mode_manual: current_language set only by user. */ |
| 463 | |
| 464 | extern enum language_mode |
| 465 | { |
| 466 | language_mode_auto, language_mode_manual |
| 467 | } |
| 468 | language_mode; |
| 469 | |
| 470 | struct type *language_bool_type (const struct language_defn *l, |
| 471 | struct gdbarch *gdbarch); |
| 472 | |
| 473 | struct type *language_string_char_type (const struct language_defn *l, |
| 474 | struct gdbarch *gdbarch); |
| 475 | |
| 476 | /* Look up type NAME in language L, and return its definition for architecture |
| 477 | GDBARCH. Returns NULL if not found. */ |
| 478 | |
| 479 | struct type *language_lookup_primitive_type (const struct language_defn *l, |
| 480 | struct gdbarch *gdbarch, |
| 481 | const char *name); |
| 482 | |
| 483 | /* Wrapper around language_lookup_primitive_type to return the |
| 484 | corresponding symbol. */ |
| 485 | |
| 486 | struct symbol * |
| 487 | language_lookup_primitive_type_as_symbol (const struct language_defn *l, |
| 488 | struct gdbarch *gdbarch, |
| 489 | const char *name); |
| 490 | |
| 491 | \f |
| 492 | /* These macros define the behaviour of the expression |
| 493 | evaluator. */ |
| 494 | |
| 495 | /* Should we range check values against the domain of their type? */ |
| 496 | #define RANGE_CHECK (range_check != range_check_off) |
| 497 | |
| 498 | /* "cast" really means conversion. */ |
| 499 | /* FIXME -- should be a setting in language_defn. */ |
| 500 | #define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c || \ |
| 501 | (LANG)->la_language == language_cplus || \ |
| 502 | (LANG)->la_language == language_objc) |
| 503 | |
| 504 | extern void language_info (int); |
| 505 | |
| 506 | extern enum language set_language (enum language); |
| 507 | \f |
| 508 | |
| 509 | /* This page contains functions that return things that are |
| 510 | specific to languages. Each of these functions is based on |
| 511 | the current setting of working_lang, which the user sets |
| 512 | with the "set language" command. */ |
| 513 | |
| 514 | #define LA_PRINT_TYPE(type,varstring,stream,show,level,flags) \ |
| 515 | (current_language->la_print_type(type,varstring,stream,show,level,flags)) |
| 516 | |
| 517 | #define LA_PRINT_TYPEDEF(type,new_symbol,stream) \ |
| 518 | (current_language->la_print_typedef(type,new_symbol,stream)) |
| 519 | |
| 520 | #define LA_VALUE_PRINT(val,stream,options) \ |
| 521 | (current_language->la_value_print(val,stream,options)) |
| 522 | |
| 523 | #define LA_PRINT_CHAR(ch, type, stream) \ |
| 524 | (current_language->la_printchar(ch, type, stream)) |
| 525 | #define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses, options) \ |
| 526 | (current_language->la_printstr(stream, elttype, string, length, \ |
| 527 | encoding, force_ellipses,options)) |
| 528 | #define LA_EMIT_CHAR(ch, type, stream, quoter) \ |
| 529 | (current_language->la_emitchar(ch, type, stream, quoter)) |
| 530 | #define LA_GET_STRING(value, buffer, length, chartype, encoding) \ |
| 531 | (current_language->la_get_string(value, buffer, length, chartype, encoding)) |
| 532 | |
| 533 | #define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \ |
| 534 | (current_language->la_print_array_index(index_value, stream, options)) |
| 535 | |
| 536 | #define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \ |
| 537 | (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK)) |
| 538 | |
| 539 | /* Test a character to decide whether it can be printed in literal form |
| 540 | or needs to be printed in another representation. For example, |
| 541 | in C the literal form of the character with octal value 141 is 'a' |
| 542 | and the "other representation" is '\141'. The "other representation" |
| 543 | is program language dependent. */ |
| 544 | |
| 545 | #define PRINT_LITERAL_FORM(c) \ |
| 546 | ((c) >= 0x20 \ |
| 547 | && ((c) < 0x7F || (c) >= 0xA0) \ |
| 548 | && (!sevenbit_strings || (c) < 0x80)) |
| 549 | |
| 550 | /* Type predicates */ |
| 551 | |
| 552 | extern int pointer_type (struct type *); |
| 553 | |
| 554 | /* Error messages */ |
| 555 | |
| 556 | extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2); |
| 557 | |
| 558 | /* Data: Does this value represent "truth" to the current language? */ |
| 559 | |
| 560 | extern int value_true (struct value *); |
| 561 | |
| 562 | /* Misc: The string representing a particular enum language. */ |
| 563 | |
| 564 | extern enum language language_enum (char *str); |
| 565 | |
| 566 | extern const struct language_defn *language_def (enum language); |
| 567 | |
| 568 | extern const char *language_str (enum language); |
| 569 | |
| 570 | /* Add a language to the set known by GDB (at initialization time). */ |
| 571 | |
| 572 | extern void add_language (const struct language_defn *); |
| 573 | |
| 574 | /* Check for a language-specific trampoline. */ |
| 575 | |
| 576 | extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc); |
| 577 | |
| 578 | /* Return demangled language symbol, or NULL. */ |
| 579 | extern char *language_demangle (const struct language_defn *current_language, |
| 580 | const char *mangled, int options); |
| 581 | |
| 582 | /* A wrapper for la_sniff_from_mangled_name. The arguments and result |
| 583 | are as for the method. */ |
| 584 | |
| 585 | extern int language_sniff_from_mangled_name (const struct language_defn *lang, |
| 586 | const char *mangled, |
| 587 | char **demangled); |
| 588 | |
| 589 | /* Return class name from physname, or NULL. */ |
| 590 | extern char *language_class_name_from_physname (const struct language_defn *, |
| 591 | const char *physname); |
| 592 | |
| 593 | /* Splitting strings into words. */ |
| 594 | extern const char *default_word_break_characters (void); |
| 595 | |
| 596 | /* Print the index of an array element using the C99 syntax. */ |
| 597 | extern void default_print_array_index (struct value *index_value, |
| 598 | struct ui_file *stream, |
| 599 | const struct value_print_options *options); |
| 600 | |
| 601 | /* Return non-zero if TYPE should be passed (and returned) by |
| 602 | reference at the language level. */ |
| 603 | int language_pass_by_reference (struct type *type); |
| 604 | |
| 605 | /* Return zero; by default, types are passed by value at the language |
| 606 | level. The target ABI may pass or return some structs by reference |
| 607 | independent of this. */ |
| 608 | int default_pass_by_reference (struct type *type); |
| 609 | |
| 610 | /* The default implementation of la_print_typedef. */ |
| 611 | void default_print_typedef (struct type *type, struct symbol *new_symbol, |
| 612 | struct ui_file *stream); |
| 613 | |
| 614 | void default_get_string (struct value *value, gdb_byte **buffer, int *length, |
| 615 | struct type **char_type, const char **charset); |
| 616 | |
| 617 | void c_get_string (struct value *value, gdb_byte **buffer, int *length, |
| 618 | struct type **char_type, const char **charset); |
| 619 | |
| 620 | #endif /* defined (LANGUAGE_H) */ |