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c906108c | 1 | /* Source-language-related definitions for GDB. |
1bac305b | 2 | |
61baf725 | 3 | Copyright (C) 1991-2017 Free Software Foundation, Inc. |
1bac305b | 4 | |
c906108c SS |
5 | Contributed by the Department of Computer Science at the State University |
6 | of New York at Buffalo. | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
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 | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
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. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #if !defined (LANGUAGE_H) | |
24 | #define LANGUAGE_H 1 | |
25 | ||
671afef6 | 26 | #include "symtab.h" |
14bc53a8 | 27 | #include "common/function-view.h" |
671afef6 | 28 | |
1777feb0 | 29 | /* Forward decls for prototypes. */ |
c906108c SS |
30 | struct value; |
31 | struct objfile; | |
52f729a7 | 32 | struct frame_info; |
c906108c | 33 | struct expression; |
da3331ec | 34 | struct ui_file; |
79a45b7d | 35 | struct value_print_options; |
79d43c61 | 36 | struct type_print_options; |
a53b64ea | 37 | struct lang_varobj_ops; |
410a0ff2 | 38 | struct parser_state; |
bb2ec1b3 | 39 | struct compile_instance; |
62dfaa9c | 40 | |
1777feb0 | 41 | #define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims. */ |
c906108c SS |
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 | ||
c5aa993b JM |
47 | extern enum range_mode |
48 | { | |
49 | range_mode_auto, range_mode_manual | |
50 | } | |
51 | range_mode; | |
c906108c SS |
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 | |
c5aa993b JM |
59 | { |
60 | range_check_off, range_check_warn, range_check_on | |
61 | } | |
62 | range_check; | |
c906108c | 63 | |
63872f9d | 64 | /* case_mode == |
1777feb0 | 65 | case_mode_auto: case_sensitivity set upon selection of scope. |
63872f9d JG |
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 | ||
7ca2d3a3 | 74 | /* array_ordering == |
1777feb0 MS |
75 | array_row_major: Arrays are in row major order. |
76 | array_column_major: Arrays are in column major order. */ | |
7ca2d3a3 DL |
77 | |
78 | extern enum array_ordering | |
79 | { | |
80 | array_row_major, array_column_major | |
81 | } | |
82 | array_ordering; | |
83 | ||
84 | ||
63872f9d | 85 | /* case_sensitivity == |
1777feb0 MS |
86 | case_sensitive_on: Case sensitivity in name matching is used. |
87 | case_sensitive_off: Case sensitivity in name matching is not used. */ | |
63872f9d JG |
88 | |
89 | extern enum case_sensitivity | |
90 | { | |
91 | case_sensitive_on, case_sensitive_off | |
92 | } | |
93 | case_sensitivity; | |
9a044a89 TT |
94 | |
95 | ||
96 | /* macro_expansion == | |
1777feb0 MS |
97 | macro_expansion_no: No macro expansion is available. |
98 | macro_expansion_c: C-like macro expansion is available. */ | |
9a044a89 TT |
99 | |
100 | enum macro_expansion | |
101 | { | |
102 | macro_expansion_no, macro_expansion_c | |
103 | }; | |
104 | ||
c906108c | 105 | \f |
f290d38e AC |
106 | /* Per architecture (OS/ABI) language information. */ |
107 | ||
108 | struct language_arch_info | |
109 | { | |
5a44ea29 | 110 | /* Its primitive types. This is a vector ended by a NULL pointer. |
f290d38e AC |
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. */ | |
5a44ea29 | 114 | struct type **primitive_type_vector; |
1994afbf DE |
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 | ||
1777feb0 | 120 | /* Type of elements of strings. */ |
f290d38e | 121 | struct type *string_char_type; |
fbb06eb1 UW |
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; | |
f290d38e AC |
127 | }; |
128 | ||
74ccd7f5 JB |
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 | ||
1a119f36 | 136 | typedef int (*symbol_name_cmp_ftype) (const char *symbol_search_name, |
eb3ff9a5 | 137 | const char *lookup_name); |
74ccd7f5 | 138 | |
c906108c SS |
139 | /* Structure tying together assorted information about a language. */ |
140 | ||
141 | struct language_defn | |
c5aa993b | 142 | { |
1777feb0 | 143 | /* Name of the language. */ |
c906108c | 144 | |
27cd387b | 145 | const char *la_name; |
c906108c | 146 | |
6abde28f YQ |
147 | /* Natural or official name of the language. */ |
148 | ||
149 | const char *la_natural_name; | |
150 | ||
1777feb0 | 151 | /* its symtab language-enum (defs.h). */ |
c906108c | 152 | |
c5aa993b | 153 | enum language la_language; |
c906108c | 154 | |
1777feb0 | 155 | /* Default range checking. */ |
c906108c | 156 | |
c5aa993b | 157 | enum range_check la_range_check; |
c906108c | 158 | |
1777feb0 | 159 | /* Default case sensitivity. */ |
63872f9d JG |
160 | enum case_sensitivity la_case_sensitivity; |
161 | ||
1777feb0 | 162 | /* Multi-dimensional array ordering. */ |
7ca2d3a3 DL |
163 | enum array_ordering la_array_ordering; |
164 | ||
9a044a89 TT |
165 | /* Style of macro expansion, if any, supported by this language. */ |
166 | enum macro_expansion la_macro_expansion; | |
167 | ||
56618e20 TT |
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 | ||
5f9769d1 | 175 | /* Definitions related to expression printing, prefixifying, and |
1777feb0 | 176 | dumping. */ |
5f9769d1 PH |
177 | |
178 | const struct exp_descriptor *la_exp_desc; | |
179 | ||
1777feb0 | 180 | /* Parser function. */ |
c906108c | 181 | |
410a0ff2 | 182 | int (*la_parser) (struct parser_state *); |
c906108c | 183 | |
1777feb0 | 184 | /* Parser error function. */ |
c906108c | 185 | |
a121b7c1 | 186 | void (*la_error) (const char *); |
c906108c | 187 | |
e85c3284 PH |
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 | ||
3e43a32a MS |
196 | void (*la_printchar) (int ch, struct type *chtype, |
197 | struct ui_file * stream); | |
c906108c | 198 | |
6c7a06a3 TT |
199 | void (*la_printstr) (struct ui_file * stream, struct type *elttype, |
200 | const gdb_byte *string, unsigned int length, | |
be759fcf | 201 | const char *encoding, int force_ellipses, |
79a45b7d | 202 | const struct value_print_options *); |
c906108c | 203 | |
6c7a06a3 TT |
204 | void (*la_emitchar) (int ch, struct type *chtype, |
205 | struct ui_file * stream, int quoter); | |
c906108c | 206 | |
1777feb0 | 207 | /* Print a type using syntax appropriate for this language. */ |
c906108c | 208 | |
25b524e8 | 209 | void (*la_print_type) (struct type *, const char *, struct ui_file *, int, |
79d43c61 | 210 | int, const struct type_print_options *); |
c906108c | 211 | |
5c6ce71d TT |
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 | ||
edf3d5f3 TT |
219 | /* Print a value using syntax appropriate for this language. |
220 | ||
221 | TYPE is the type of the sub-object to be printed. | |
c906108c | 222 | |
edf3d5f3 TT |
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 | ||
d3eab38a | 237 | void (*la_val_print) (struct type *type, |
d3eab38a TT |
238 | int embedded_offset, CORE_ADDR address, |
239 | struct ui_file *stream, int recurse, | |
e8b24d9f | 240 | struct value *val, |
d3eab38a | 241 | const struct value_print_options *options); |
c906108c | 242 | |
1777feb0 | 243 | /* Print a top-level value using syntax appropriate for this language. */ |
c906108c | 244 | |
8e069a98 TT |
245 | void (*la_value_print) (struct value *, struct ui_file *, |
246 | const struct value_print_options *); | |
c906108c | 247 | |
63e43d3a PMR |
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. | |
a5ee536b JB |
256 | |
257 | Throw an error if the variable cannot be found. */ | |
258 | ||
259 | struct value *(*la_read_var_value) (struct symbol *var, | |
63e43d3a | 260 | const struct block *var_block, |
a5ee536b JB |
261 | struct frame_info *frame); |
262 | ||
f636b87d AF |
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. */ | |
52f729a7 | 267 | CORE_ADDR (*skip_trampoline) (struct frame_info *, CORE_ADDR); |
f636b87d | 268 | |
5f9a71c3 DC |
269 | /* Now come some hooks for lookup_symbol. */ |
270 | ||
2b2d9e11 VP |
271 | /* If this is non-NULL, specifies the name that of the implicit |
272 | local variable that refers to the current object instance. */ | |
5f9a71c3 | 273 | |
a121b7c1 | 274 | const char *la_name_of_this; |
5f9a71c3 DC |
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 | ||
d12307c1 PMR |
280 | struct block_symbol (*la_lookup_symbol_nonlocal) |
281 | (const struct language_defn *, | |
282 | const char *, | |
283 | const struct block *, | |
284 | const domain_enum); | |
5f9a71c3 | 285 | |
b368761e DC |
286 | /* Find the definition of the type with the given name. */ |
287 | struct type *(*la_lookup_transparent_type) (const char *); | |
288 | ||
9a3d7dfd AF |
289 | /* Return demangled language symbol, or NULL. */ |
290 | char *(*la_demangle) (const char *mangled, int options); | |
291 | ||
8b302db8 TT |
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 | ||
31c27f77 JJ |
308 | /* Return class name of a mangled method name or NULL. */ |
309 | char *(*la_class_name_from_physname) (const char *physname); | |
310 | ||
1777feb0 | 311 | /* Table for printing expressions. */ |
c906108c | 312 | |
c5aa993b | 313 | const struct op_print *la_op_print_tab; |
c906108c | 314 | |
c5aa993b | 315 | /* Zero if the language has first-class arrays. True if there are no |
1777feb0 | 316 | array values, and array objects decay to pointers, as in C. */ |
c906108c | 317 | |
c5aa993b | 318 | char c_style_arrays; |
c906108c | 319 | |
1777feb0 | 320 | /* Index to use for extracting the first element of a string. */ |
c5aa993b | 321 | char string_lower_bound; |
c906108c | 322 | |
6084f43a | 323 | /* The list of characters forming word boundaries. */ |
67cb5b2d | 324 | const char *(*la_word_break_characters) (void); |
6084f43a | 325 | |
eb3ff9a5 | 326 | /* Add to the completion tracker all symbols which are possible |
49c4e619 | 327 | completions for TEXT. WORD is the entire command on which the |
2f68a895 TT |
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. */ | |
eb3ff9a5 PA |
331 | void (*la_collect_symbol_completion_matches) |
332 | (completion_tracker &tracker, | |
c6756f62 | 333 | complete_symbol_mode mode, |
eb3ff9a5 PA |
334 | const char *text, |
335 | const char *word, | |
336 | enum type_code code); | |
41d27058 | 337 | |
f290d38e AC |
338 | /* The per-architecture (OS/ABI) language information. */ |
339 | void (*la_language_arch_info) (struct gdbarch *, | |
340 | struct language_arch_info *); | |
341 | ||
e79af960 JB |
342 | /* Print the index of an element of an array. */ |
343 | void (*la_print_array_index) (struct value *index_value, | |
344 | struct ui_file *stream, | |
79a45b7d | 345 | const struct value_print_options *options); |
e79af960 | 346 | |
41f1b697 DJ |
347 | /* Return non-zero if TYPE should be passed (and returned) by |
348 | reference at the language level. */ | |
349 | int (*la_pass_by_reference) (struct type *type); | |
350 | ||
ae6a3a4c | 351 | /* Obtain a string from the inferior, storing it in a newly allocated |
fbb8f299 PM |
352 | buffer in BUFFER, which should be freed by the caller. If the |
353 | in- and out-parameter *LENGTH is specified at -1, the string is | |
354 | read until a null character of the appropriate width is found - | |
355 | otherwise the string is read to the length of characters specified. | |
356 | On completion, *LENGTH will hold the size of the string in characters. | |
357 | If a *LENGTH of -1 was specified it will count only actual | |
358 | characters, excluding any eventual terminating null character. | |
359 | Otherwise *LENGTH will include all characters - including any nulls. | |
360 | CHARSET will hold the encoding used in the string. */ | |
ae6a3a4c | 361 | void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length, |
96c07c5b | 362 | struct type **chartype, const char **charset); |
ae6a3a4c | 363 | |
43cc5389 TT |
364 | /* Return an expression that can be used for a location |
365 | watchpoint. TYPE is a pointer type that points to the memory | |
366 | to watch, and ADDR is the address of the watched memory. */ | |
367 | gdb::unique_xmalloc_ptr<char> (*la_watch_location_expression) | |
368 | (struct type *type, CORE_ADDR addr); | |
369 | ||
74ccd7f5 JB |
370 | /* Return a pointer to the function that should be used to match |
371 | a symbol name against LOOKUP_NAME. This is mostly for languages | |
372 | such as Ada where the matching algorithm depends on LOOKUP_NAME. | |
f8eba3c6 | 373 | |
74ccd7f5 JB |
374 | This field may be NULL, in which case strcmp_iw will be used |
375 | to perform the matching. */ | |
1a119f36 | 376 | symbol_name_cmp_ftype (*la_get_symbol_name_cmp) (const char *lookup_name); |
f8eba3c6 TT |
377 | |
378 | /* Find all symbols in the current program space matching NAME in | |
379 | DOMAIN, according to this language's rules. | |
380 | ||
4eeaa230 DE |
381 | The search is done in BLOCK only. |
382 | The caller is responsible for iterating up through superblocks | |
383 | if desired. | |
f8eba3c6 | 384 | |
14bc53a8 PA |
385 | For each one, call CALLBACK with the symbol. If CALLBACK |
386 | returns false, the iteration ends at that point. | |
f8eba3c6 | 387 | |
72e1143f TT |
388 | This field may not be NULL. If the language does not need any |
389 | special processing here, 'iterate_over_symbols' should be | |
390 | used as the definition. */ | |
14bc53a8 PA |
391 | void (*la_iterate_over_symbols) |
392 | (const struct block *block, const char *name, domain_enum domain, | |
393 | gdb::function_view<symbol_found_callback_ftype> callback); | |
f8eba3c6 | 394 | |
a53b64ea YQ |
395 | /* Various operations on varobj. */ |
396 | const struct lang_varobj_ops *la_varobj_ops; | |
397 | ||
bb2ec1b3 TT |
398 | /* If this language allows compilation from the gdb command line, |
399 | this method should be non-NULL. When called it should return | |
400 | an instance of struct gcc_context appropriate to the language. | |
401 | When defined this method must never return NULL; instead it | |
402 | should throw an exception on failure. The returned compiler | |
403 | instance is owned by its caller and must be deallocated by | |
404 | calling its 'destroy' method. */ | |
405 | ||
406 | struct compile_instance *(*la_get_compile_instance) (void); | |
407 | ||
408 | /* This method must be defined if 'la_get_gcc_context' is defined. | |
409 | If 'la_get_gcc_context' is not defined, then this method is | |
410 | ignored. | |
411 | ||
aaee65ae PA |
412 | This takes the user-supplied text and returns a new bit of code |
413 | to compile. | |
bb2ec1b3 TT |
414 | |
415 | INST is the compiler instance being used. | |
416 | INPUT is the user's input text. | |
417 | GDBARCH is the architecture to use. | |
418 | EXPR_BLOCK is the block in which the expression is being | |
419 | parsed. | |
420 | EXPR_PC is the PC at which the expression is being parsed. */ | |
421 | ||
aaee65ae PA |
422 | std::string (*la_compute_program) (struct compile_instance *inst, |
423 | const char *input, | |
424 | struct gdbarch *gdbarch, | |
425 | const struct block *expr_block, | |
426 | CORE_ADDR expr_pc); | |
bb2ec1b3 | 427 | |
1777feb0 MS |
428 | /* Add fields above this point, so the magic number is always last. */ |
429 | /* Magic number for compat checking. */ | |
c5aa993b JM |
430 | |
431 | long la_magic; | |
432 | ||
433 | }; | |
c906108c SS |
434 | |
435 | #define LANG_MAGIC 910823L | |
436 | ||
437 | /* Pointer to the language_defn for our current language. This pointer | |
438 | always points to *some* valid struct; it can be used without checking | |
439 | it for validity. | |
440 | ||
441 | The current language affects expression parsing and evaluation | |
442 | (FIXME: it might be cleaner to make the evaluation-related stuff | |
443 | separate exp_opcodes for each different set of semantics. We | |
444 | should at least think this through more clearly with respect to | |
445 | what happens if the language is changed between parsing and | |
446 | evaluation) and printing of things like types and arrays. It does | |
447 | *not* affect symbol-reading-- each source file in a symbol-file has | |
448 | its own language and we should keep track of that regardless of the | |
449 | language when symbols are read. If we want some manual setting for | |
450 | the language of symbol files (e.g. detecting when ".c" files are | |
7e73cedf | 451 | C++), it should be a separate setting from the current_language. */ |
c906108c SS |
452 | |
453 | extern const struct language_defn *current_language; | |
454 | ||
455 | /* Pointer to the language_defn expected by the user, e.g. the language | |
456 | of main(), or the language we last mentioned in a message, or C. */ | |
457 | ||
458 | extern const struct language_defn *expected_language; | |
459 | ||
460 | /* language_mode == | |
461 | language_mode_auto: current_language automatically set upon selection | |
c5aa993b | 462 | of scope (e.g. stack frame) |
c906108c SS |
463 | language_mode_manual: current_language set only by user. */ |
464 | ||
465 | extern enum language_mode | |
c5aa993b JM |
466 | { |
467 | language_mode_auto, language_mode_manual | |
468 | } | |
469 | language_mode; | |
b62f3443 | 470 | |
fbb06eb1 UW |
471 | struct type *language_bool_type (const struct language_defn *l, |
472 | struct gdbarch *gdbarch); | |
473 | ||
b62f3443 JB |
474 | struct type *language_string_char_type (const struct language_defn *l, |
475 | struct gdbarch *gdbarch); | |
476 | ||
1994afbf DE |
477 | /* Look up type NAME in language L, and return its definition for architecture |
478 | GDBARCH. Returns NULL if not found. */ | |
479 | ||
46b0da17 DE |
480 | struct type *language_lookup_primitive_type (const struct language_defn *l, |
481 | struct gdbarch *gdbarch, | |
482 | const char *name); | |
b62f3443 | 483 | |
1994afbf DE |
484 | /* Wrapper around language_lookup_primitive_type to return the |
485 | corresponding symbol. */ | |
486 | ||
487 | struct symbol * | |
488 | language_lookup_primitive_type_as_symbol (const struct language_defn *l, | |
489 | struct gdbarch *gdbarch, | |
490 | const char *name); | |
491 | ||
c906108c SS |
492 | \f |
493 | /* These macros define the behaviour of the expression | |
494 | evaluator. */ | |
495 | ||
1777feb0 | 496 | /* Should we range check values against the domain of their type? */ |
c906108c SS |
497 | #define RANGE_CHECK (range_check != range_check_off) |
498 | ||
1777feb0 MS |
499 | /* "cast" really means conversion. */ |
500 | /* FIXME -- should be a setting in language_defn. */ | |
cc73bb8c TT |
501 | #define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c || \ |
502 | (LANG)->la_language == language_cplus || \ | |
503 | (LANG)->la_language == language_objc) | |
c906108c | 504 | |
a14ed312 | 505 | extern void language_info (int); |
c906108c | 506 | |
a14ed312 | 507 | extern enum language set_language (enum language); |
c906108c | 508 | \f |
c5aa993b | 509 | |
c906108c SS |
510 | /* This page contains functions that return things that are |
511 | specific to languages. Each of these functions is based on | |
512 | the current setting of working_lang, which the user sets | |
1777feb0 | 513 | with the "set language" command. */ |
c906108c | 514 | |
79d43c61 TT |
515 | #define LA_PRINT_TYPE(type,varstring,stream,show,level,flags) \ |
516 | (current_language->la_print_type(type,varstring,stream,show,level,flags)) | |
c906108c | 517 | |
5c6ce71d TT |
518 | #define LA_PRINT_TYPEDEF(type,new_symbol,stream) \ |
519 | (current_language->la_print_typedef(type,new_symbol,stream)) | |
520 | ||
79a45b7d TT |
521 | #define LA_VALUE_PRINT(val,stream,options) \ |
522 | (current_language->la_value_print(val,stream,options)) | |
c906108c | 523 | |
6c7a06a3 TT |
524 | #define LA_PRINT_CHAR(ch, type, stream) \ |
525 | (current_language->la_printchar(ch, type, stream)) | |
3e43a32a | 526 | #define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses, options) \ |
6c7a06a3 | 527 | (current_language->la_printstr(stream, elttype, string, length, \ |
be759fcf | 528 | encoding, force_ellipses,options)) |
6c7a06a3 TT |
529 | #define LA_EMIT_CHAR(ch, type, stream, quoter) \ |
530 | (current_language->la_emitchar(ch, type, stream, quoter)) | |
96c07c5b TT |
531 | #define LA_GET_STRING(value, buffer, length, chartype, encoding) \ |
532 | (current_language->la_get_string(value, buffer, length, chartype, encoding)) | |
c906108c | 533 | |
577ce03a | 534 | #define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \ |
79a45b7d | 535 | (current_language->la_print_array_index(index_value, stream, options)) |
e79af960 | 536 | |
14bc53a8 PA |
537 | #define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \ |
538 | (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK)) | |
f8eba3c6 | 539 | |
c906108c SS |
540 | /* Test a character to decide whether it can be printed in literal form |
541 | or needs to be printed in another representation. For example, | |
542 | in C the literal form of the character with octal value 141 is 'a' | |
543 | and the "other representation" is '\141'. The "other representation" | |
1777feb0 | 544 | is program language dependent. */ |
c906108c SS |
545 | |
546 | #define PRINT_LITERAL_FORM(c) \ | |
547 | ((c) >= 0x20 \ | |
548 | && ((c) < 0x7F || (c) >= 0xA0) \ | |
549 | && (!sevenbit_strings || (c) < 0x80)) | |
550 | ||
c906108c SS |
551 | /* Type predicates */ |
552 | ||
a14ed312 | 553 | extern int pointer_type (struct type *); |
c906108c | 554 | |
c906108c SS |
555 | /* Error messages */ |
556 | ||
a0b31db1 | 557 | extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2); |
c906108c SS |
558 | |
559 | /* Data: Does this value represent "truth" to the current language? */ | |
560 | ||
a14ed312 | 561 | extern int value_true (struct value *); |
c906108c | 562 | |
c906108c SS |
563 | /* Misc: The string representing a particular enum language. */ |
564 | ||
2039bd9f | 565 | extern enum language language_enum (const char *str); |
c906108c | 566 | |
a14ed312 | 567 | extern const struct language_defn *language_def (enum language); |
7a292a7a | 568 | |
27cd387b | 569 | extern const char *language_str (enum language); |
c906108c | 570 | |
1777feb0 | 571 | /* Check for a language-specific trampoline. */ |
f636b87d | 572 | |
52f729a7 | 573 | extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc); |
f636b87d | 574 | |
9a3d7dfd AF |
575 | /* Return demangled language symbol, or NULL. */ |
576 | extern char *language_demangle (const struct language_defn *current_language, | |
577 | const char *mangled, int options); | |
578 | ||
8b302db8 TT |
579 | /* A wrapper for la_sniff_from_mangled_name. The arguments and result |
580 | are as for the method. */ | |
581 | ||
582 | extern int language_sniff_from_mangled_name (const struct language_defn *lang, | |
583 | const char *mangled, | |
584 | char **demangled); | |
585 | ||
31c27f77 JJ |
586 | /* Return class name from physname, or NULL. */ |
587 | extern char *language_class_name_from_physname (const struct language_defn *, | |
588 | const char *physname); | |
589 | ||
9f0a5303 | 590 | /* Splitting strings into words. */ |
67cb5b2d | 591 | extern const char *default_word_break_characters (void); |
9f0a5303 | 592 | |
e79af960 JB |
593 | /* Print the index of an array element using the C99 syntax. */ |
594 | extern void default_print_array_index (struct value *index_value, | |
595 | struct ui_file *stream, | |
79a45b7d | 596 | const struct value_print_options *options); |
e79af960 | 597 | |
41f1b697 DJ |
598 | /* Return non-zero if TYPE should be passed (and returned) by |
599 | reference at the language level. */ | |
600 | int language_pass_by_reference (struct type *type); | |
601 | ||
602 | /* Return zero; by default, types are passed by value at the language | |
603 | level. The target ABI may pass or return some structs by reference | |
604 | independent of this. */ | |
605 | int default_pass_by_reference (struct type *type); | |
606 | ||
5c6ce71d TT |
607 | /* The default implementation of la_print_typedef. */ |
608 | void default_print_typedef (struct type *type, struct symbol *new_symbol, | |
609 | struct ui_file *stream); | |
610 | ||
ae6a3a4c | 611 | void default_get_string (struct value *value, gdb_byte **buffer, int *length, |
96c07c5b | 612 | struct type **char_type, const char **charset); |
ae6a3a4c TJB |
613 | |
614 | void c_get_string (struct value *value, gdb_byte **buffer, int *length, | |
96c07c5b | 615 | struct type **char_type, const char **charset); |
ae6a3a4c | 616 | |
47e77640 PA |
617 | /* The languages supported by GDB. */ |
618 | ||
619 | extern const struct language_defn auto_language_defn; | |
620 | extern const struct language_defn unknown_language_defn; | |
621 | extern const struct language_defn minimal_language_defn; | |
622 | ||
623 | extern const struct language_defn ada_language_defn; | |
624 | extern const struct language_defn asm_language_defn; | |
625 | extern const struct language_defn c_language_defn; | |
626 | extern const struct language_defn cplus_language_defn; | |
627 | extern const struct language_defn d_language_defn; | |
628 | extern const struct language_defn f_language_defn; | |
629 | extern const struct language_defn go_language_defn; | |
630 | extern const struct language_defn m2_language_defn; | |
631 | extern const struct language_defn objc_language_defn; | |
632 | extern const struct language_defn opencl_language_defn; | |
633 | extern const struct language_defn pascal_language_defn; | |
634 | extern const struct language_defn rust_language_defn; | |
635 | ||
e3ad2841 TT |
636 | /* Save the current language and restore it upon destruction. */ |
637 | ||
638 | class scoped_restore_current_language | |
639 | { | |
640 | public: | |
641 | ||
642 | explicit scoped_restore_current_language () | |
643 | : m_lang (current_language->la_language) | |
644 | { | |
645 | } | |
646 | ||
647 | ~scoped_restore_current_language () | |
648 | { | |
649 | set_language (m_lang); | |
650 | } | |
651 | ||
652 | scoped_restore_current_language (const scoped_restore_current_language &) | |
653 | = delete; | |
654 | scoped_restore_current_language &operator= | |
655 | (const scoped_restore_current_language &) = delete; | |
656 | ||
657 | private: | |
658 | ||
659 | enum language m_lang; | |
660 | }; | |
661 | ||
c5aa993b | 662 | #endif /* defined (LANGUAGE_H) */ |