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" */
37 range_mode_auto: range_check set automatically to default of language.
38 range_mode_manual: range_check set manually by user. */
40 extern enum range_mode {range_mode_auto, range_mode_manual} range_mode;
43 range_check_on: Ranges are checked in GDB expressions, producing errors.
44 range_check_warn: Ranges are checked, producing warnings.
45 range_check_off: Ranges are not checked in GDB expressions. */
47 extern enum range_check
48 {range_check_off, range_check_warn, range_check_on} range_check;
51 type_mode_auto: type_check set automatically to default of language
52 type_mode_manual: type_check set manually by user. */
54 extern enum type_mode {type_mode_auto, type_mode_manual} type_mode;
57 type_check_on: Types are checked in GDB expressions, producing errors.
58 type_check_warn: Types are checked, producing warnings.
59 type_check_off: Types are not checked in GDB expressions. */
61 extern enum type_check
62 {type_check_off, type_check_warn, type_check_on} type_check;
64 /* Structure tying together assorted information about a language. */
66 struct language_defn {
67 char * la_name; /* Name of the language */
68 enum language la_language; /* its symtab language-enum (defs.h) */
70 *la_builtin_type_vector; /* Its builtin types */
71 enum range_check la_range_check; /* Default range checking */
72 enum type_check la_type_check; /* Default type checking */
73 int (*la_parser) PARAMS((void)); /* Parser function */
74 void (*la_error) PARAMS ((char *)); /* Parser error function */
75 struct type **la_longest_int; /* Longest signed integral type */
76 struct type **la_longest_unsigned_int; /* Longest uns integral type */
77 struct type **la_longest_float; /* Longest floating point type */
78 char *la_hex_format; /* Hexadecimal printf format str */
79 char *la_hex_format_pre; /* Prefix for custom format string */
80 char *la_hex_format_suf; /* Suffix for custom format string */
81 char *la_octal_format; /* Octal printf format str */
82 char *la_octal_format_pre; /* Prefix for custom format string */
83 char *la_octal_format_suf; /* Suffix for custom format string */
85 *la_op_print_tab; /* Table for printing expressions */
86 /* Add fields above this point, so the magic number is always last. */
87 long la_magic; /* Magic number for compat checking */
90 #define LANG_MAGIC 910823L
92 /* Pointer to the language_defn for our current language. This pointer
93 always points to *some* valid struct; it can be used without checking
96 extern const struct language_defn *current_language;
99 language_mode_auto: current_language automatically set upon selection
100 of scope (e.g. stack frame)
101 language_mode_manual: current_language set only by user. */
103 extern enum language_mode
104 {language_mode_auto, language_mode_manual} language_mode;
106 /* These macros define the behaviour of the expression
109 /* Should we strictly type check expressions? */
110 #define STRICT_TYPE (type_check != type_check_off)
112 /* Should we range check values against the domain of their type? */
113 #define RANGE_CHECK (range_check != range_check_off)
115 /* "cast" really means conversion */
116 /* FIXME -- should be a setting in language_defn */
117 #define CAST_IS_CONVERSION (current_language->la_language == language_c)
120 language_info PARAMS ((int));
123 set_language PARAMS ((enum language));
126 /* This page contains functions that return things that are
127 specific to languages. Each of these functions is based on
128 the current setting of working_lang, which the user sets
129 with the "set language" command. */
131 /* Returns some built-in types */
132 #define longest_int() (*current_language->la_longest_int)
133 #define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
134 #define longest_float() (*current_language->la_longest_float)
136 /* Hexadecimal number formatting is in defs.h because it is so common
139 /* Return a format string for printf that will print a number in the local
140 (language-specific) octal format. Result is static and is
141 overwritten by the next call. local_octal_format_custom takes printf
142 options like "08" or "l" (to produce e.g. %08x or %lx). */
144 #define local_octal_format() (current_language->la_octal_format)
147 local_octal_format_custom PARAMS ((char *));
149 /* Type predicates */
152 simple_type PARAMS ((struct type *));
155 ordered_type PARAMS ((struct type *));
158 same_type PARAMS ((struct type *, struct type *));
161 integral_type PARAMS ((struct type *));
164 numeric_type PARAMS ((struct type *));
167 character_type PARAMS ((struct type *));
170 boolean_type PARAMS ((struct type *));
173 float_type PARAMS ((struct type *));
176 pointer_type PARAMS ((struct type *));
179 structured_type PARAMS ((struct type *));
181 /* Checks Binary and Unary operations for semantic type correctness */
182 /* FIXME: Does not appear to be used */
183 #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
186 binop_type_check PARAMS ((struct value *, struct value *, int));
191 op_error PARAMS ((char *fmt, enum exp_opcode, int));
193 #define type_op_error(f,o) \
194 op_error((f),(o),type_check==type_check_on ? 1 : 0)
195 #define range_op_error(f,o) \
196 op_error((f),(o),range_check==range_check_on ? 1 : 0)
204 /* Data: Does this value represent "truth" to the current language? */
207 value_true PARAMS ((struct value *));
209 /* Misc: The string representing a particular enum language. */
212 language_str PARAMS ((enum language));
214 /* Add a language to the set known by GDB (at initialization time). */
217 add_language PARAMS ((const struct language_defn *));
220 get_frame_language PARAMS ((void)); /* In stack.c */
222 #endif /* defined (LANGUAGE_H) */