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 */
27 /* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */
30 /* This used to be included to configure GDB for one or more specific
31 languages. Now it is shortcutted to configure for all of them. FIXME. */
32 /* #include "lang_def.h" */
35 /* start-sanitize-chill */
37 /* end-sanitize-chill */
40 range_mode_auto: range_check set automatically to default of language.
41 range_mode_manual: range_check set manually by user. */
43 extern enum range_mode {range_mode_auto, range_mode_manual} range_mode;
46 range_check_on: Ranges are checked in GDB expressions, producing errors.
47 range_check_warn: Ranges are checked, producing warnings.
48 range_check_off: Ranges are not checked in GDB expressions. */
50 extern enum range_check
51 {range_check_off, range_check_warn, range_check_on} range_check;
54 type_mode_auto: type_check set automatically to default of language
55 type_mode_manual: type_check set manually by user. */
57 extern enum type_mode {type_mode_auto, type_mode_manual} type_mode;
60 type_check_on: Types are checked in GDB expressions, producing errors.
61 type_check_warn: Types are checked, producing warnings.
62 type_check_off: Types are not checked in GDB expressions. */
64 extern enum type_check
65 {type_check_off, type_check_warn, type_check_on} type_check;
67 /* Information for doing language dependent formatting of printed values. */
69 struct language_format_info
71 /* The format that can be passed directly to standard C printf functions
72 to generate a completely formatted value in the format appropriate for
77 /* The prefix to be used when directly printing a value, or constructing
78 a standard C printf format. This generally is everything up to the
79 conversion specification (the part introduced by the '%' character
80 and terminated by the conversion specifier character). */
82 char *la_format_prefix;
84 /* The conversion specifier. This is generally everything after the
85 field width and precision, typically only a single character such
86 as 'o' for octal format or 'x' for hexadecimal format. */
88 char *la_format_specifier;
90 /* The suffix to be used when directly printing a value, or constructing
91 a standard C printf format. This generally is everything after the
92 conversion specification (the part introduced by the '%' character
93 and terminated by the conversion specifier character). */
95 char *la_format_suffix; /* Suffix for custom format string */
98 /* Structure tying together assorted information about a language. */
100 struct language_defn {
101 char * la_name; /* Name of the language */
102 enum language la_language; /* its symtab language-enum (defs.h) */
104 *la_builtin_type_vector; /* Its builtin types */
105 enum range_check la_range_check; /* Default range checking */
106 enum type_check la_type_check; /* Default type checking */
107 int (*la_parser) PARAMS((void)); /* Parser function */
108 void (*la_error) PARAMS ((char *)); /* Parser error function */
109 struct type **la_longest_int; /* Longest signed integral type */
110 struct type **la_longest_unsigned_int; /* Longest uns integral type */
111 struct type **la_longest_float; /* Longest floating point type */
112 struct language_format_info
113 la_binary_format; /* Base 2 (binary) formats. */
114 struct language_format_info
115 la_octal_format; /* Base 8 (octal) formats. */
116 struct language_format_info
117 la_decimal_format; /* Base 10 (decimal) formats */
118 struct language_format_info
119 la_hex_format; /* Base 16 (hexadecimal) formats */
120 const struct op_print
121 *la_op_print_tab; /* Table for printing expressions */
122 /* Add fields above this point, so the magic number is always last. */
123 long la_magic; /* Magic number for compat checking */
126 #define LANG_MAGIC 910823L
128 /* Pointer to the language_defn for our current language. This pointer
129 always points to *some* valid struct; it can be used without checking
132 extern const struct language_defn *current_language;
134 /* Pointer to the language_defn expected by the user, e.g. the language
135 of main(), or the language we last mentioned in a message, or C. */
137 extern const struct language_defn *expected_language;
140 language_mode_auto: current_language automatically set upon selection
141 of scope (e.g. stack frame)
142 language_mode_manual: current_language set only by user. */
144 extern enum language_mode
145 {language_mode_auto, language_mode_manual} language_mode;
147 /* These macros define the behaviour of the expression
150 /* Should we strictly type check expressions? */
151 #define STRICT_TYPE (type_check != type_check_off)
153 /* Should we range check values against the domain of their type? */
154 #define RANGE_CHECK (range_check != range_check_off)
156 /* "cast" really means conversion */
157 /* FIXME -- should be a setting in language_defn */
158 #define CAST_IS_CONVERSION (current_language->la_language == language_c)
161 language_info PARAMS ((int));
164 set_language PARAMS ((enum language));
167 /* This page contains functions that return things that are
168 specific to languages. Each of these functions is based on
169 the current setting of working_lang, which the user sets
170 with the "set language" command. */
172 /* Returns some built-in types */
173 #define longest_int() (*current_language->la_longest_int)
174 #define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
175 #define longest_float() (*current_language->la_longest_float)
177 /* Return a format string for printf that will print a number in one of
178 the local (language-specific) formats. Result is static and is
179 overwritten by the next call. Takes printf options like "08" or "l"
180 (to produce e.g. %08x or %lx). */
182 #define local_binary_format() \
183 (current_language->la_binary_format.la_format)
184 #define local_binary_format_prefix() \
185 (current_language->la_binary_format.la_format_prefix)
186 #define local_binary_format_specifier() \
187 (current_language->la_binary_format.la_format_specifier)
188 #define local_binary_format_suffix() \
189 (current_language->la_binary_format.la_format_suffix)
191 #define local_octal_format() \
192 (current_language->la_octal_format.la_format)
193 #define local_octal_format_prefix() \
194 (current_language->la_octal_format.la_format_prefix)
195 #define local_octal_format_specifier() \
196 (current_language->la_octal_format.la_format_specifier)
197 #define local_octal_format_suffix() \
198 (current_language->la_octal_format.la_format_suffix)
200 #define local_decimal_format() \
201 (current_language->la_decimal_format.la_format)
202 #define local_decimal_format_prefix() \
203 (current_language->la_decimal_format.la_format_prefix)
204 #define local_decimal_format_specifier() \
205 (current_language->la_decimal_format.la_format_specifier)
206 #define local_decimal_format_suffix() \
207 (current_language->la_decimal_format.la_format_suffix)
209 #define local_hex_format() \
210 (current_language->la_hex_format.la_format)
211 #define local_hex_format_prefix() \
212 (current_language->la_hex_format.la_format_prefix)
213 #define local_hex_format_specifier() \
214 (current_language->la_hex_format.la_format_specifier)
215 #define local_hex_format_suffix() \
216 (current_language->la_hex_format.la_format_suffix)
218 /* Return a format string for printf that will print a number in one of
219 the local (language-specific) formats. Result is static and is
220 overwritten by the next call. Takes printf options like "08" or "l"
221 (to produce e.g. %08x or %lx). */
224 local_octal_format_custom PARAMS ((char *)); /* language.c */
227 local_hex_format_custom PARAMS ((char *)); /* language.c */
229 /* Return a string that contains a number formatted in one of the local
230 (language-specific) formats. Result is static and is overwritten by
231 the next call. Takes printf options like "08" or "l". */
234 local_octal_string PARAMS ((int)); /* language.c */
237 local_octal_string_custom PARAMS ((int, char *));/* language.c */
240 local_hex_string PARAMS ((int)); /* language.c */
243 local_hex_string_custom PARAMS ((int, char *)); /* language.c */
245 /* Type predicates */
248 simple_type PARAMS ((struct type *));
251 ordered_type PARAMS ((struct type *));
254 same_type PARAMS ((struct type *, struct type *));
257 integral_type PARAMS ((struct type *));
260 numeric_type PARAMS ((struct type *));
263 character_type PARAMS ((struct type *));
266 boolean_type PARAMS ((struct type *));
269 float_type PARAMS ((struct type *));
272 pointer_type PARAMS ((struct type *));
275 structured_type PARAMS ((struct type *));
277 /* Checks Binary and Unary operations for semantic type correctness */
278 /* FIXME: Does not appear to be used */
279 #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
282 binop_type_check PARAMS ((struct value *, struct value *, int));
287 op_error PARAMS ((char *fmt, enum exp_opcode, int));
289 #define type_op_error(f,o) \
290 op_error((f),(o),type_check==type_check_on ? 1 : 0)
291 #define range_op_error(f,o) \
292 op_error((f),(o),range_check==range_check_on ? 1 : 0)
300 /* Data: Does this value represent "truth" to the current language? */
303 value_true PARAMS ((struct value *));
305 /* Misc: The string representing a particular enum language. */
308 language_str PARAMS ((enum language));
310 /* Add a language to the set known by GDB (at initialization time). */
313 add_language PARAMS ((const struct language_defn *));
316 get_frame_language PARAMS ((void)); /* In stack.c */
318 #endif /* defined (LANGUAGE_H) */