1 /* Source-language-related definitions for GDB.
2 Copyright 1991, 1992 Free Software Foundation, Inc.
3 Contributed by the Department of Computer Science at the State University
4 of New York at Buffalo.
6 This file is part of GDB.
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.
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.
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. */
22 #if !defined (LANGUAGE_H)
25 #ifdef __STDC__ /* Forward decls for prototypes */
28 /* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */
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" */
39 range_mode_auto: range_check set automatically to default of language.
40 range_mode_manual: range_check set manually by user. */
42 extern enum range_mode {range_mode_auto, range_mode_manual} range_mode;
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. */
49 extern enum range_check
50 {range_check_off, range_check_warn, range_check_on} range_check;
53 type_mode_auto: type_check set automatically to default of language
54 type_mode_manual: type_check set manually by user. */
56 extern enum type_mode {type_mode_auto, type_mode_manual} type_mode;
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. */
63 extern enum type_check
64 {type_check_off, type_check_warn, type_check_on} type_check;
66 /* Information for doing language dependent formatting of printed values. */
68 struct language_format_info
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
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). */
81 char *la_format_prefix;
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. */
87 char *la_format_specifier;
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). */
94 char *la_format_suffix; /* Suffix for custom format string */
97 /* Structure tying together assorted information about a language. */
101 /* Name of the language */
105 /* its symtab language-enum (defs.h) */
107 enum language la_language;
109 /* Its builtin types */
111 struct type ** const *la_builtin_type_vector;
113 /* Default range checking */
115 enum range_check la_range_check;
117 /* Default type checking */
119 enum type_check la_type_check;
121 /* Parser function. */
123 int (*la_parser) PARAMS((void));
125 /* Parser error function */
127 void (*la_error) PARAMS ((char *));
129 void (*la_printchar) PARAMS ((int, FILE *));
131 void (*la_printstr) PARAMS ((FILE *, char *, unsigned int, int));
133 struct type *(*la_fund_type) PARAMS ((struct objfile *, int));
135 /* Print a type using syntax appropriate for this language. */
137 void (*la_print_type) PARAMS ((struct type *, char *, FILE *, int, int));
139 /* Print a value using syntax appropriate for this language. */
141 int (*la_val_print) PARAMS ((struct type *, char *, CORE_ADDR, FILE *,
142 int, int, int, enum val_prettyprint));
144 /* Longest signed integral type */
146 struct type **la_longest_int;
148 /* Longest unsigned integral type */
150 struct type **la_longest_unsigned_int;
152 /* Longest floating point type */
154 struct type **la_longest_float;
156 /* Base 2 (binary) formats. */
158 struct language_format_info la_binary_format;
160 /* Base 8 (octal) formats. */
162 struct language_format_info la_octal_format;
164 /* Base 10 (decimal) formats */
166 struct language_format_info la_decimal_format;
168 /* Base 16 (hexadecimal) formats */
170 struct language_format_info la_hex_format;
173 /* Table for printing expressions */
175 const struct op_print *la_op_print_tab;
177 /* Add fields above this point, so the magic number is always last. */
178 /* Magic number for compat checking */
184 #define LANG_MAGIC 910823L
186 /* Pointer to the language_defn for our current language. This pointer
187 always points to *some* valid struct; it can be used without checking
190 extern const struct language_defn *current_language;
192 /* Pointer to the language_defn expected by the user, e.g. the language
193 of main(), or the language we last mentioned in a message, or C. */
195 extern const struct language_defn *expected_language;
198 language_mode_auto: current_language automatically set upon selection
199 of scope (e.g. stack frame)
200 language_mode_manual: current_language set only by user. */
202 extern enum language_mode
203 {language_mode_auto, language_mode_manual} language_mode;
205 /* These macros define the behaviour of the expression
208 /* Should we strictly type check expressions? */
209 #define STRICT_TYPE (type_check != type_check_off)
211 /* Should we range check values against the domain of their type? */
212 #define RANGE_CHECK (range_check != range_check_off)
214 /* "cast" really means conversion */
215 /* FIXME -- should be a setting in language_defn */
216 #define CAST_IS_CONVERSION (current_language->la_language == language_c || \
217 current_language->la_language == language_cplus)
220 language_info PARAMS ((int));
223 set_language PARAMS ((enum language));
226 /* This page contains functions that return things that are
227 specific to languages. Each of these functions is based on
228 the current setting of working_lang, which the user sets
229 with the "set language" command. */
231 /* Returns some built-in types */
232 #define longest_int() (*current_language->la_longest_int)
233 #define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
234 #define longest_float() (*current_language->la_longest_float)
236 #define create_fundamental_type(objfile,typeid) \
237 (current_language->la_fund_type(objfile, typeid))
239 #define LA_PRINT_TYPE(type,varstring,stream,show,level) \
240 (current_language->la_print_type(type,varstring,stream,show,level))
242 #define LA_VAL_PRINT(type,valaddr,addr,stream,fmt,deref,recurse,pretty) \
243 (current_language->la_val_print(type,valaddr,addr,stream,fmt,deref, \
246 /* Return a format string for printf that will print a number in one of
247 the local (language-specific) formats. Result is static and is
248 overwritten by the next call. Takes printf options like "08" or "l"
249 (to produce e.g. %08x or %lx). */
251 #define local_binary_format() \
252 (current_language->la_binary_format.la_format)
253 #define local_binary_format_prefix() \
254 (current_language->la_binary_format.la_format_prefix)
255 #define local_binary_format_specifier() \
256 (current_language->la_binary_format.la_format_specifier)
257 #define local_binary_format_suffix() \
258 (current_language->la_binary_format.la_format_suffix)
260 #define local_octal_format() \
261 (current_language->la_octal_format.la_format)
262 #define local_octal_format_prefix() \
263 (current_language->la_octal_format.la_format_prefix)
264 #define local_octal_format_specifier() \
265 (current_language->la_octal_format.la_format_specifier)
266 #define local_octal_format_suffix() \
267 (current_language->la_octal_format.la_format_suffix)
269 #define local_decimal_format() \
270 (current_language->la_decimal_format.la_format)
271 #define local_decimal_format_prefix() \
272 (current_language->la_decimal_format.la_format_prefix)
273 #define local_decimal_format_specifier() \
274 (current_language->la_decimal_format.la_format_specifier)
275 #define local_decimal_format_suffix() \
276 (current_language->la_decimal_format.la_format_suffix)
278 #define local_hex_format() \
279 (current_language->la_hex_format.la_format)
280 #define local_hex_format_prefix() \
281 (current_language->la_hex_format.la_format_prefix)
282 #define local_hex_format_specifier() \
283 (current_language->la_hex_format.la_format_specifier)
284 #define local_hex_format_suffix() \
285 (current_language->la_hex_format.la_format_suffix)
287 #define LA_PRINT_CHAR(ch, stream) \
288 (current_language->la_printchar(ch, stream))
289 #define LA_PRINT_STRING(stream, string, length, force_ellipses) \
290 (current_language->la_printstr(stream, string, length, force_ellipses))
292 /* Test a character to decide whether it can be printed in literal form
293 or needs to be printed in another representation. For example,
294 in C the literal form of the character with octal value 141 is 'a'
295 and the "other representation" is '\141'. The "other representation"
296 is program language dependent. */
298 #define PRINT_LITERAL_FORM(c) \
299 ((c)>=0x20 && ((c)<0x7F || (c)>=0xA0) && (!sevenbit_strings || (c)<0x80))
301 /* Return a format string for printf that will print a number in one of
302 the local (language-specific) formats. Result is static and is
303 overwritten by the next call. Takes printf options like "08" or "l"
304 (to produce e.g. %08x or %lx). */
307 local_decimal_format_custom PARAMS ((char *)); /* language.c */
310 local_octal_format_custom PARAMS ((char *)); /* language.c */
313 local_hex_format_custom PARAMS ((char *)); /* language.c */
315 /* Return a string that contains a number formatted in one of the local
316 (language-specific) formats. Result is static and is overwritten by
317 the next call. Takes printf options like "08" or "l". */
320 local_octal_string PARAMS ((int)); /* language.c */
323 local_octal_string_custom PARAMS ((int, char *));/* language.c */
326 local_hex_string PARAMS ((int)); /* language.c */
329 local_hex_string_custom PARAMS ((int, char *)); /* language.c */
331 /* Type predicates */
334 simple_type PARAMS ((struct type *));
337 ordered_type PARAMS ((struct type *));
340 same_type PARAMS ((struct type *, struct type *));
343 integral_type PARAMS ((struct type *));
346 numeric_type PARAMS ((struct type *));
349 character_type PARAMS ((struct type *));
352 boolean_type PARAMS ((struct type *));
355 float_type PARAMS ((struct type *));
358 pointer_type PARAMS ((struct type *));
361 structured_type PARAMS ((struct type *));
363 /* Checks Binary and Unary operations for semantic type correctness */
364 /* FIXME: Does not appear to be used */
365 #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
368 binop_type_check PARAMS ((struct value *, struct value *, int));
373 op_error PARAMS ((char *fmt, enum exp_opcode, int));
375 #define type_op_error(f,o) \
376 op_error((f),(o),type_check==type_check_on ? 1 : 0)
377 #define range_op_error(f,o) \
378 op_error((f),(o),range_check==range_check_on ? 1 : 0)
386 /* Data: Does this value represent "truth" to the current language? */
389 value_true PARAMS ((struct value *));
391 /* Misc: The string representing a particular enum language. */
393 extern const struct language_defn *
394 language_def PARAMS ((enum language));
397 language_str PARAMS ((enum language));
399 /* Add a language to the set known by GDB (at initialization time). */
402 add_language PARAMS ((const struct language_defn *));
405 get_frame_language PARAMS ((void)); /* In stack.c */
407 #endif /* defined (LANGUAGE_H) */