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- /* Source-language-related definitions for GDB.
- Copyright 1991, 1992 Free Software Foundation, Inc.
- Contributed by the Department of Computer Science at the State University
- of New York at Buffalo.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #if !defined (LANGUAGE_H)
- #define LANGUAGE_H 1
-
- #ifdef __STDC__ /* Forward decls for prototypes */
- struct value;
- /* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */
- #endif
-
- /* This used to be included to configure GDB for one or more specific
- languages. Now it is shortcutted to configure for all of them. FIXME. */
- /* #include "lang_def.h" */
- #define _LANG_c
- #define _LANG_m2
-
- /* range_mode ==
- range_mode_auto: range_check set automatically to default of language.
- range_mode_manual: range_check set manually by user. */
-
- extern enum range_mode {range_mode_auto, range_mode_manual} range_mode;
-
- /* range_check ==
- range_check_on: Ranges are checked in GDB expressions, producing errors.
- range_check_warn: Ranges are checked, producing warnings.
- range_check_off: Ranges are not checked in GDB expressions. */
-
- extern enum range_check
- {range_check_off, range_check_warn, range_check_on} range_check;
-
- /* type_mode ==
- type_mode_auto: type_check set automatically to default of language
- type_mode_manual: type_check set manually by user. */
-
- extern enum type_mode {type_mode_auto, type_mode_manual} type_mode;
-
- /* type_check ==
- type_check_on: Types are checked in GDB expressions, producing errors.
- type_check_warn: Types are checked, producing warnings.
- type_check_off: Types are not checked in GDB expressions. */
-
- extern enum type_check
- {type_check_off, type_check_warn, type_check_on} type_check;
-
- /* Structure tying together assorted information about a language. */
-
- struct language_defn {
- char * la_name; /* Name of the language */
- enum language la_language; /* its symtab language-enum (defs.h) */
- struct type ** const
- *la_builtin_type_vector; /* Its builtin types */
- enum range_check la_range_check; /* Default range checking */
- enum type_check la_type_check; /* Default type checking */
- int (*la_parser) PARAMS((void)); /* Parser function */
- void (*la_error) PARAMS ((char *)); /* Parser error function */
- struct type **la_longest_int; /* Longest signed integral type */
- struct type **la_longest_unsigned_int; /* Longest uns integral type */
- struct type **la_longest_float; /* Longest floating point type */
- char *la_hex_format; /* Hexadecimal printf format str */
- char *la_hex_format_pre; /* Prefix for custom format string */
- char *la_hex_format_suf; /* Suffix for custom format string */
- char *la_octal_format; /* Octal printf format str */
- char *la_octal_format_pre; /* Prefix for custom format string */
- char *la_octal_format_suf; /* Suffix for custom format string */
- const struct op_print
- *la_op_print_tab; /* Table for printing expressions */
- /* Add fields above this point, so the magic number is always last. */
- long la_magic; /* Magic number for compat checking */
- };
-
- #define LANG_MAGIC 910823L
-
- /* Pointer to the language_defn for our current language. This pointer
- always points to *some* valid struct; it can be used without checking
- it for validity. */
-
- extern const struct language_defn *current_language;
-
- /* language_mode ==
- language_mode_auto: current_language automatically set upon selection
- of scope (e.g. stack frame)
- language_mode_manual: current_language set only by user. */
-
- extern enum language_mode
- {language_mode_auto, language_mode_manual} language_mode;
-
- /* These macros define the behaviour of the expression
- evaluator. */
-
- /* Should we strictly type check expressions? */
- #define STRICT_TYPE (type_check != type_check_off)
-
- /* Should we range check values against the domain of their type? */
- #define RANGE_CHECK (range_check != range_check_off)
-
- /* "cast" really means conversion */
- /* FIXME -- should be a setting in language_defn */
- #define CAST_IS_CONVERSION (current_language->la_language == language_c)
-
- extern void
- language_info PARAMS ((int));
-
- extern void
- set_language PARAMS ((enum language));
-
-
- /* This page contains functions that return things that are
- specific to languages. Each of these functions is based on
- the current setting of working_lang, which the user sets
- with the "set language" command. */
-
- /* Returns some built-in types */
- #define longest_int() (*current_language->la_longest_int)
- #define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
- #define longest_float() (*current_language->la_longest_float)
-
- /* Hexadecimal number formatting is in defs.h because it is so common
- throughout GDB. */
-
- /* Return a format string for printf that will print a number in the local
- (language-specific) octal format. Result is static and is
- overwritten by the next call. local_octal_format_custom takes printf
- options like "08" or "l" (to produce e.g. %08x or %lx). */
-
- #define local_octal_format() (current_language->la_octal_format)
-
- extern char *
- local_octal_format_custom PARAMS ((char *));
-
- /* Type predicates */
-
- extern int
- simple_type PARAMS ((struct type *));
-
- extern int
- ordered_type PARAMS ((struct type *));
-
- extern int
- same_type PARAMS ((struct type *, struct type *));
-
- extern int
- integral_type PARAMS ((struct type *));
-
- extern int
- numeric_type PARAMS ((struct type *));
-
- extern int
- character_type PARAMS ((struct type *));
-
- extern int
- boolean_type PARAMS ((struct type *));
-
- extern int
- float_type PARAMS ((struct type *));
-
- extern int
- pointer_type PARAMS ((struct type *));
-
- extern int
- structured_type PARAMS ((struct type *));
-
- /* Checks Binary and Unary operations for semantic type correctness */
- /* FIXME: Does not appear to be used */
- #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
-
- extern void
- binop_type_check PARAMS ((struct value *, struct value *, int));
-
- /* Error messages */
-
- extern void
- op_error PARAMS ((char *fmt, enum exp_opcode, int));
-
- #define type_op_error(f,o) \
- op_error((f),(o),type_check==type_check_on ? 1 : 0)
- #define range_op_error(f,o) \
- op_error((f),(o),range_check==range_check_on ? 1 : 0)
-
- extern void
- type_error ();
-
- void
- range_error ();
-
- /* Data: Does this value represent "truth" to the current language? */
-
- extern int
- value_true PARAMS ((struct value *));
-
- /* Misc: The string representing a particular enum language. */
-
- extern char *
- language_str PARAMS ((enum language));
-
- /* Add a language to the set known by GDB (at initialization time). */
-
- extern void
- add_language PARAMS ((const struct language_defn *));
-
- extern enum language
- get_frame_language PARAMS ((void)); /* In stack.c */
-
- #endif /* defined (LANGUAGE_H) */
-