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c8023e66 | 1 | /* Source-language-related definitions for GDB. |
75af490b | 2 | Copyright 1991, 1992 Free Software Foundation, Inc. |
c8023e66 JG |
3 | Contributed by the Department of Computer Science at the State University |
4 | of New York at Buffalo. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
75af490b JG |
22 | #if !defined (LANGUAGE_H) |
23 | #define LANGUAGE_H 1 | |
24 | ||
f9e3b3cc | 25 | #ifdef __STDC__ /* Forward decls for prototypes */ |
75af490b | 26 | struct value; |
22e39759 | 27 | struct objfile; |
f9e3b3cc | 28 | /* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */ |
75af490b JG |
29 | #endif |
30 | ||
c8023e66 JG |
31 | /* This used to be included to configure GDB for one or more specific |
32 | languages. Now it is shortcutted to configure for all of them. FIXME. */ | |
33 | /* #include "lang_def.h" */ | |
34 | #define _LANG_c | |
35 | #define _LANG_m2 | |
e58de8a2 | 36 | #define _LANG_chill |
c8023e66 JG |
37 | |
38 | /* range_mode == | |
39 | range_mode_auto: range_check set automatically to default of language. | |
40 | range_mode_manual: range_check set manually by user. */ | |
41 | ||
42 | extern enum range_mode {range_mode_auto, range_mode_manual} range_mode; | |
43 | ||
44 | /* range_check == | |
45 | range_check_on: Ranges are checked in GDB expressions, producing errors. | |
46 | range_check_warn: Ranges are checked, producing warnings. | |
47 | range_check_off: Ranges are not checked in GDB expressions. */ | |
48 | ||
49 | extern enum range_check | |
50 | {range_check_off, range_check_warn, range_check_on} range_check; | |
51 | ||
52 | /* type_mode == | |
53 | type_mode_auto: type_check set automatically to default of language | |
54 | type_mode_manual: type_check set manually by user. */ | |
55 | ||
56 | extern enum type_mode {type_mode_auto, type_mode_manual} type_mode; | |
57 | ||
58 | /* type_check == | |
59 | type_check_on: Types are checked in GDB expressions, producing errors. | |
60 | type_check_warn: Types are checked, producing warnings. | |
61 | type_check_off: Types are not checked in GDB expressions. */ | |
62 | ||
63 | extern enum type_check | |
64 | {type_check_off, type_check_warn, type_check_on} type_check; | |
65 | \f | |
2e66cf7d FF |
66 | /* Information for doing language dependent formatting of printed values. */ |
67 | ||
68 | struct language_format_info | |
69 | { | |
70 | /* The format that can be passed directly to standard C printf functions | |
71 | to generate a completely formatted value in the format appropriate for | |
72 | the language. */ | |
73 | ||
74 | char *la_format; | |
75 | ||
76 | /* The prefix to be used when directly printing a value, or constructing | |
77 | a standard C printf format. This generally is everything up to the | |
78 | conversion specification (the part introduced by the '%' character | |
79 | and terminated by the conversion specifier character). */ | |
80 | ||
81 | char *la_format_prefix; | |
82 | ||
83 | /* The conversion specifier. This is generally everything after the | |
84 | field width and precision, typically only a single character such | |
85 | as 'o' for octal format or 'x' for hexadecimal format. */ | |
86 | ||
87 | char *la_format_specifier; | |
88 | ||
89 | /* The suffix to be used when directly printing a value, or constructing | |
90 | a standard C printf format. This generally is everything after the | |
91 | conversion specification (the part introduced by the '%' character | |
92 | and terminated by the conversion specifier character). */ | |
93 | ||
94 | char *la_format_suffix; /* Suffix for custom format string */ | |
95 | }; | |
96 | ||
c8023e66 JG |
97 | /* Structure tying together assorted information about a language. */ |
98 | ||
a8a69e63 FF |
99 | struct language_defn |
100 | { | |
101 | /* Name of the language */ | |
102 | ||
103 | char *la_name; | |
104 | ||
105 | /* its symtab language-enum (defs.h) */ | |
106 | ||
107 | enum language la_language; | |
108 | ||
61932a8e JK |
109 | /* Its builtin types. This is a vector ended by a NULL pointer. These |
110 | types can be specified by name in parsing types in expressions, | |
111 | regardless of whether the program being debugged actually defines | |
112 | such a type. */ | |
a8a69e63 FF |
113 | |
114 | struct type ** const *la_builtin_type_vector; | |
115 | ||
116 | /* Default range checking */ | |
117 | ||
118 | enum range_check la_range_check; | |
119 | ||
120 | /* Default type checking */ | |
121 | ||
122 | enum type_check la_type_check; | |
123 | ||
124 | /* Parser function. */ | |
125 | ||
126 | int (*la_parser) PARAMS((void)); | |
127 | ||
128 | /* Parser error function */ | |
129 | ||
130 | void (*la_error) PARAMS ((char *)); | |
131 | ||
199b2450 | 132 | void (*la_printchar) PARAMS ((int, GDB_FILE *)); |
a8a69e63 | 133 | |
199b2450 | 134 | void (*la_printstr) PARAMS ((GDB_FILE *, char *, unsigned int, int)); |
a8a69e63 FF |
135 | |
136 | struct type *(*la_fund_type) PARAMS ((struct objfile *, int)); | |
137 | ||
138 | /* Print a type using syntax appropriate for this language. */ | |
139 | ||
199b2450 | 140 | void (*la_print_type) PARAMS ((struct type *, char *, GDB_FILE *, int, int)); |
a8a69e63 FF |
141 | |
142 | /* Print a value using syntax appropriate for this language. */ | |
143 | ||
199b2450 | 144 | int (*la_val_print) PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *, |
a8a69e63 FF |
145 | int, int, int, enum val_prettyprint)); |
146 | ||
147 | /* Longest signed integral type */ | |
148 | ||
149 | struct type **la_longest_int; | |
150 | ||
151 | /* Longest unsigned integral type */ | |
152 | ||
153 | struct type **la_longest_unsigned_int; | |
154 | ||
155 | /* Longest floating point type */ | |
156 | ||
157 | struct type **la_longest_float; | |
158 | ||
159 | /* Base 2 (binary) formats. */ | |
160 | ||
161 | struct language_format_info la_binary_format; | |
162 | ||
163 | /* Base 8 (octal) formats. */ | |
164 | ||
165 | struct language_format_info la_octal_format; | |
166 | ||
167 | /* Base 10 (decimal) formats */ | |
168 | ||
169 | struct language_format_info la_decimal_format; | |
170 | ||
171 | /* Base 16 (hexadecimal) formats */ | |
172 | ||
173 | struct language_format_info la_hex_format; | |
174 | ||
175 | ||
176 | /* Table for printing expressions */ | |
177 | ||
178 | const struct op_print *la_op_print_tab; | |
179 | ||
180 | /* Add fields above this point, so the magic number is always last. */ | |
181 | /* Magic number for compat checking */ | |
182 | ||
183 | long la_magic; | |
184 | ||
c8023e66 JG |
185 | }; |
186 | ||
187 | #define LANG_MAGIC 910823L | |
188 | ||
189 | /* Pointer to the language_defn for our current language. This pointer | |
190 | always points to *some* valid struct; it can be used without checking | |
a3178c64 JK |
191 | it for validity. |
192 | ||
193 | The current language affects expression parsing and evaluation | |
194 | (FIXME: it might be cleaner to make the evaluation-related stuff | |
195 | separate exp_opcodes for each different set of semantics. We | |
196 | should at least think this through more clearly with respect to | |
197 | what happens if the language is changed between parsing and | |
198 | evaluation) and printing of things like types and arrays. It does | |
199 | *not* affect symbol-reading-- each source file in a symbol-file has | |
200 | its own language and we should keep track of that regardless of the | |
201 | language when symbols are read. If we want some manual setting for | |
202 | the language of symbol files (e.g. detecting when ".c" files are | |
203 | C++), it should be a seprate setting from the current_language. */ | |
c8023e66 | 204 | |
0c6efbcc | 205 | extern const struct language_defn *current_language; |
c8023e66 | 206 | |
b5af69c3 JG |
207 | /* Pointer to the language_defn expected by the user, e.g. the language |
208 | of main(), or the language we last mentioned in a message, or C. */ | |
209 | ||
210 | extern const struct language_defn *expected_language; | |
211 | ||
c8023e66 JG |
212 | /* language_mode == |
213 | language_mode_auto: current_language automatically set upon selection | |
214 | of scope (e.g. stack frame) | |
215 | language_mode_manual: current_language set only by user. */ | |
216 | ||
217 | extern enum language_mode | |
218 | {language_mode_auto, language_mode_manual} language_mode; | |
219 | \f | |
220 | /* These macros define the behaviour of the expression | |
221 | evaluator. */ | |
222 | ||
223 | /* Should we strictly type check expressions? */ | |
1a5a8f2a | 224 | #define STRICT_TYPE (type_check != type_check_off) |
c8023e66 JG |
225 | |
226 | /* Should we range check values against the domain of their type? */ | |
1a5a8f2a | 227 | #define RANGE_CHECK (range_check != range_check_off) |
c8023e66 JG |
228 | |
229 | /* "cast" really means conversion */ | |
230 | /* FIXME -- should be a setting in language_defn */ | |
f77ad505 FF |
231 | #define CAST_IS_CONVERSION (current_language->la_language == language_c || \ |
232 | current_language->la_language == language_cplus) | |
c8023e66 | 233 | |
75af490b JG |
234 | extern void |
235 | language_info PARAMS ((int)); | |
236 | ||
237 | extern void | |
238 | set_language PARAMS ((enum language)); | |
239 | ||
c8023e66 JG |
240 | \f |
241 | /* This page contains functions that return things that are | |
242 | specific to languages. Each of these functions is based on | |
243 | the current setting of working_lang, which the user sets | |
244 | with the "set language" command. */ | |
245 | ||
246 | /* Returns some built-in types */ | |
247 | #define longest_int() (*current_language->la_longest_int) | |
248 | #define longest_unsigned_int() (*current_language->la_longest_unsigned_int) | |
249 | #define longest_float() (*current_language->la_longest_float) | |
c8023e66 | 250 | |
bf229b4e FF |
251 | #define create_fundamental_type(objfile,typeid) \ |
252 | (current_language->la_fund_type(objfile, typeid)) | |
253 | ||
a8a69e63 FF |
254 | #define LA_PRINT_TYPE(type,varstring,stream,show,level) \ |
255 | (current_language->la_print_type(type,varstring,stream,show,level)) | |
256 | ||
257 | #define LA_VAL_PRINT(type,valaddr,addr,stream,fmt,deref,recurse,pretty) \ | |
258 | (current_language->la_val_print(type,valaddr,addr,stream,fmt,deref, \ | |
259 | recurse,pretty)) | |
260 | ||
2e66cf7d FF |
261 | /* Return a format string for printf that will print a number in one of |
262 | the local (language-specific) formats. Result is static and is | |
263 | overwritten by the next call. Takes printf options like "08" or "l" | |
264 | (to produce e.g. %08x or %lx). */ | |
265 | ||
266 | #define local_binary_format() \ | |
267 | (current_language->la_binary_format.la_format) | |
268 | #define local_binary_format_prefix() \ | |
269 | (current_language->la_binary_format.la_format_prefix) | |
270 | #define local_binary_format_specifier() \ | |
271 | (current_language->la_binary_format.la_format_specifier) | |
272 | #define local_binary_format_suffix() \ | |
273 | (current_language->la_binary_format.la_format_suffix) | |
274 | ||
275 | #define local_octal_format() \ | |
276 | (current_language->la_octal_format.la_format) | |
277 | #define local_octal_format_prefix() \ | |
278 | (current_language->la_octal_format.la_format_prefix) | |
279 | #define local_octal_format_specifier() \ | |
280 | (current_language->la_octal_format.la_format_specifier) | |
281 | #define local_octal_format_suffix() \ | |
282 | (current_language->la_octal_format.la_format_suffix) | |
283 | ||
284 | #define local_decimal_format() \ | |
285 | (current_language->la_decimal_format.la_format) | |
286 | #define local_decimal_format_prefix() \ | |
287 | (current_language->la_decimal_format.la_format_prefix) | |
288 | #define local_decimal_format_specifier() \ | |
289 | (current_language->la_decimal_format.la_format_specifier) | |
290 | #define local_decimal_format_suffix() \ | |
291 | (current_language->la_decimal_format.la_format_suffix) | |
292 | ||
293 | #define local_hex_format() \ | |
294 | (current_language->la_hex_format.la_format) | |
295 | #define local_hex_format_prefix() \ | |
296 | (current_language->la_hex_format.la_format_prefix) | |
297 | #define local_hex_format_specifier() \ | |
298 | (current_language->la_hex_format.la_format_specifier) | |
299 | #define local_hex_format_suffix() \ | |
300 | (current_language->la_hex_format.la_format_suffix) | |
301 | ||
a8a69e63 | 302 | #define LA_PRINT_CHAR(ch, stream) \ |
5d074aa9 | 303 | (current_language->la_printchar(ch, stream)) |
a8a69e63 | 304 | #define LA_PRINT_STRING(stream, string, length, force_ellipses) \ |
5d074aa9 FF |
305 | (current_language->la_printstr(stream, string, length, force_ellipses)) |
306 | ||
5707ea9f FF |
307 | /* Test a character to decide whether it can be printed in literal form |
308 | or needs to be printed in another representation. For example, | |
309 | in C the literal form of the character with octal value 141 is 'a' | |
310 | and the "other representation" is '\141'. The "other representation" | |
311 | is program language dependent. */ | |
312 | ||
313 | #define PRINT_LITERAL_FORM(c) \ | |
314 | ((c)>=0x20 && ((c)<0x7F || (c)>=0xA0) && (!sevenbit_strings || (c)<0x80)) | |
315 | ||
2e66cf7d FF |
316 | /* Return a format string for printf that will print a number in one of |
317 | the local (language-specific) formats. Result is static and is | |
318 | overwritten by the next call. Takes printf options like "08" or "l" | |
319 | (to produce e.g. %08x or %lx). */ | |
c8023e66 | 320 | |
58a66e24 FF |
321 | extern char * |
322 | local_decimal_format_custom PARAMS ((char *)); /* language.c */ | |
323 | ||
2e66cf7d FF |
324 | extern char * |
325 | local_octal_format_custom PARAMS ((char *)); /* language.c */ | |
326 | ||
327 | extern char * | |
328 | local_hex_format_custom PARAMS ((char *)); /* language.c */ | |
c8023e66 | 329 | |
2e66cf7d FF |
330 | /* Return a string that contains a number formatted in one of the local |
331 | (language-specific) formats. Result is static and is overwritten by | |
332 | the next call. Takes printf options like "08" or "l". */ | |
333 | ||
334 | extern char * | |
5573d7d4 | 335 | local_hex_string PARAMS ((unsigned long)); /* language.c */ |
2e66cf7d FF |
336 | |
337 | extern char * | |
5573d7d4 | 338 | local_hex_string_custom PARAMS ((unsigned long, char *)); /* language.c */ |
c8023e66 JG |
339 | |
340 | /* Type predicates */ | |
75af490b JG |
341 | |
342 | extern int | |
343 | simple_type PARAMS ((struct type *)); | |
344 | ||
345 | extern int | |
346 | ordered_type PARAMS ((struct type *)); | |
347 | ||
348 | extern int | |
349 | same_type PARAMS ((struct type *, struct type *)); | |
350 | ||
351 | extern int | |
352 | integral_type PARAMS ((struct type *)); | |
353 | ||
354 | extern int | |
355 | numeric_type PARAMS ((struct type *)); | |
356 | ||
357 | extern int | |
358 | character_type PARAMS ((struct type *)); | |
359 | ||
360 | extern int | |
361 | boolean_type PARAMS ((struct type *)); | |
362 | ||
363 | extern int | |
364 | float_type PARAMS ((struct type *)); | |
365 | ||
366 | extern int | |
367 | pointer_type PARAMS ((struct type *)); | |
368 | ||
369 | extern int | |
370 | structured_type PARAMS ((struct type *)); | |
c8023e66 JG |
371 | |
372 | /* Checks Binary and Unary operations for semantic type correctness */ | |
75af490b | 373 | /* FIXME: Does not appear to be used */ |
c8023e66 JG |
374 | #define unop_type_check(v,o) binop_type_check((v),NULL,(o)) |
375 | ||
75af490b JG |
376 | extern void |
377 | binop_type_check PARAMS ((struct value *, struct value *, int)); | |
378 | ||
c8023e66 | 379 | /* Error messages */ |
75af490b JG |
380 | |
381 | extern void | |
382 | op_error PARAMS ((char *fmt, enum exp_opcode, int)); | |
383 | ||
c8023e66 JG |
384 | #define type_op_error(f,o) \ |
385 | op_error((f),(o),type_check==type_check_on ? 1 : 0) | |
386 | #define range_op_error(f,o) \ | |
387 | op_error((f),(o),range_check==range_check_on ? 1 : 0) | |
75af490b JG |
388 | |
389 | extern void | |
390 | type_error (); | |
391 | ||
392 | void | |
393 | range_error (); | |
c8023e66 JG |
394 | |
395 | /* Data: Does this value represent "truth" to the current language? */ | |
75af490b JG |
396 | |
397 | extern int | |
398 | value_true PARAMS ((struct value *)); | |
c8023e66 JG |
399 | |
400 | /* Misc: The string representing a particular enum language. */ | |
75af490b | 401 | |
bf229b4e FF |
402 | extern const struct language_defn * |
403 | language_def PARAMS ((enum language)); | |
404 | ||
75af490b JG |
405 | extern char * |
406 | language_str PARAMS ((enum language)); | |
c8023e66 JG |
407 | |
408 | /* Add a language to the set known by GDB (at initialization time). */ | |
d8ce1326 | 409 | |
75af490b JG |
410 | extern void |
411 | add_language PARAMS ((const struct language_defn *)); | |
412 | ||
413 | extern enum language | |
414 | get_frame_language PARAMS ((void)); /* In stack.c */ | |
415 | ||
416 | #endif /* defined (LANGUAGE_H) */ |