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 /* Structure tying together assorted information about a language. */
69 struct language_defn {
70 char * la_name; /* Name of the language */
71 enum language la_language; /* its symtab language-enum (defs.h) */
73 *la_builtin_type_vector; /* Its builtin types */
74 enum range_check la_range_check; /* Default range checking */
75 enum type_check la_type_check; /* Default type checking */
76 int (*la_parser) PARAMS((void)); /* Parser function */
77 void (*la_error) PARAMS ((char *)); /* Parser error function */
78 struct type **la_longest_int; /* Longest signed integral type */
79 struct type **la_longest_unsigned_int; /* Longest uns integral type */
80 struct type **la_longest_float; /* Longest floating point type */
81 char *la_hex_format; /* Hexadecimal printf format str */
82 char *la_hex_format_pre; /* Prefix for custom format string */
83 char *la_hex_format_suf; /* Suffix for custom format string */
84 char *la_octal_format; /* Octal printf format str */
85 char *la_octal_format_pre; /* Prefix for custom format string */
86 char *la_octal_format_suf; /* Suffix for custom format string */
88 *la_op_print_tab; /* Table for printing expressions */
89 /* Add fields above this point, so the magic number is always last. */
90 long la_magic; /* Magic number for compat checking */
93 #define LANG_MAGIC 910823L
95 /* Pointer to the language_defn for our current language. This pointer
96 always points to *some* valid struct; it can be used without checking
99 extern const struct language_defn *current_language;
101 /* Pointer to the language_defn expected by the user, e.g. the language
102 of main(), or the language we last mentioned in a message, or C. */
104 extern const struct language_defn *expected_language;
107 language_mode_auto: current_language automatically set upon selection
108 of scope (e.g. stack frame)
109 language_mode_manual: current_language set only by user. */
111 extern enum language_mode
112 {language_mode_auto, language_mode_manual} language_mode;
114 /* These macros define the behaviour of the expression
117 /* Should we strictly type check expressions? */
118 #define STRICT_TYPE (type_check != type_check_off)
120 /* Should we range check values against the domain of their type? */
121 #define RANGE_CHECK (range_check != range_check_off)
123 /* "cast" really means conversion */
124 /* FIXME -- should be a setting in language_defn */
125 #define CAST_IS_CONVERSION (current_language->la_language == language_c)
128 language_info PARAMS ((int));
131 set_language PARAMS ((enum language));
134 /* This page contains functions that return things that are
135 specific to languages. Each of these functions is based on
136 the current setting of working_lang, which the user sets
137 with the "set language" command. */
139 /* Returns some built-in types */
140 #define longest_int() (*current_language->la_longest_int)
141 #define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
142 #define longest_float() (*current_language->la_longest_float)
144 /* Hexadecimal number formatting is in defs.h because it is so common
147 /* Return a format string for printf that will print a number in the local
148 (language-specific) octal format. Result is static and is
149 overwritten by the next call. local_octal_format_custom takes printf
150 options like "08" or "l" (to produce e.g. %08x or %lx). */
152 #define local_octal_format() (current_language->la_octal_format)
155 local_octal_format_custom PARAMS ((char *));
157 /* Type predicates */
160 simple_type PARAMS ((struct type *));
163 ordered_type PARAMS ((struct type *));
166 same_type PARAMS ((struct type *, struct type *));
169 integral_type PARAMS ((struct type *));
172 numeric_type PARAMS ((struct type *));
175 character_type PARAMS ((struct type *));
178 boolean_type PARAMS ((struct type *));
181 float_type PARAMS ((struct type *));
184 pointer_type PARAMS ((struct type *));
187 structured_type PARAMS ((struct type *));
189 /* Checks Binary and Unary operations for semantic type correctness */
190 /* FIXME: Does not appear to be used */
191 #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
194 binop_type_check PARAMS ((struct value *, struct value *, int));
199 op_error PARAMS ((char *fmt, enum exp_opcode, int));
201 #define type_op_error(f,o) \
202 op_error((f),(o),type_check==type_check_on ? 1 : 0)
203 #define range_op_error(f,o) \
204 op_error((f),(o),range_check==range_check_on ? 1 : 0)
212 /* Data: Does this value represent "truth" to the current language? */
215 value_true PARAMS ((struct value *));
217 /* Misc: The string representing a particular enum language. */
220 language_str PARAMS ((enum language));
222 /* Add a language to the set known by GDB (at initialization time). */
225 add_language PARAMS ((const struct language_defn *));
228 get_frame_language PARAMS ((void)); /* In stack.c */
230 #endif /* defined (LANGUAGE_H) */