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old-cross-binutils/gdb/language.h
Fred Fish 22e3975901 * c-exp.y, m2-exp.y: Migrate code that has nothing to do with 
expression parsing into c-lang.c and m2-lang.c respectively.
	* c-lang.c, m2-lang.c:  New files, code migrated from c-exp.y and
	m2-exp.y respectively.
	* c-lang.h, m2-lang.h:  New files, internal interfaces between c-*
	and m2-* files respectively.
	* Makefile.in (SFILES_MAINDIR):  Add c-lang.c, m2-lang.c.
	* Makefile.in (HFILES):  Add c-lang.h, m2-lang.h.
	* Makefile.in (OBS):  Add c-lang.o, m2-lang.o.
	* expression.h (struct block):  Forward declaration for prototypes.
	* language.h (struct objfile):  Forward declaration for prototypes.
	**** start-sanitize-chill ****
	* Makefile.in (SFILES_MAINDIR):  Add ch-lang.c.
	* Makefile.in (HFILES):  Add ch-lang.h.
	* Makefile.in (OBS):  Add ch-lang.o.
	* ch-exp.y:  Migrate code that has nothing to do with expression
	parsing into ch-lang.c.
	* ch-lang.c:  New file, code migrated from c-exp.y.
	* ch-lang.h:  New file, internal interface between ch-* files.
	**** end-sanitize-chill ****
1992-12-09 06:50:30 +00:00

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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;
struct objfile;
/* 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
/* start-sanitize-chill */
#define _LANG_chill
/* end-sanitize-chill */
/* 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;
/* Information for doing language dependent formatting of printed values. */
struct language_format_info
{
/* The format that can be passed directly to standard C printf functions
to generate a completely formatted value in the format appropriate for
the language. */
char *la_format;
/* The prefix to be used when directly printing a value, or constructing
a standard C printf format. This generally is everything up to the
conversion specification (the part introduced by the '%' character
and terminated by the conversion specifier character). */
char *la_format_prefix;
/* The conversion specifier. This is generally everything after the
field width and precision, typically only a single character such
as 'o' for octal format or 'x' for hexadecimal format. */
char *la_format_specifier;
/* The suffix to be used when directly printing a value, or constructing
a standard C printf format. This generally is everything after the
conversion specification (the part introduced by the '%' character
and terminated by the conversion specifier character). */
char *la_format_suffix; /* Suffix for custom format string */
};
/* 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 */
void (*la_printchar) PARAMS ((int, FILE *));
void (*la_printstr) PARAMS ((FILE *, char *, unsigned int, int));
struct type *(*la_fund_type) PARAMS ((struct objfile *, int));
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 */
struct language_format_info
la_binary_format; /* Base 2 (binary) formats. */
struct language_format_info
la_octal_format; /* Base 8 (octal) formats. */
struct language_format_info
la_decimal_format; /* Base 10 (decimal) formats */
struct language_format_info
la_hex_format; /* Base 16 (hexadecimal) formats */
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;
/* Pointer to the language_defn expected by the user, e.g. the language
of main(), or the language we last mentioned in a message, or C. */
extern const struct language_defn *expected_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)
#define create_fundamental_type(objfile,typeid) \
(current_language->la_fund_type(objfile, typeid))
/* Return a format string for printf that will print a number in one of
the local (language-specific) formats. Result is static and is
overwritten by the next call. Takes printf options like "08" or "l"
(to produce e.g. %08x or %lx). */
#define local_binary_format() \
(current_language->la_binary_format.la_format)
#define local_binary_format_prefix() \
(current_language->la_binary_format.la_format_prefix)
#define local_binary_format_specifier() \
(current_language->la_binary_format.la_format_specifier)
#define local_binary_format_suffix() \
(current_language->la_binary_format.la_format_suffix)
#define local_octal_format() \
(current_language->la_octal_format.la_format)
#define local_octal_format_prefix() \
(current_language->la_octal_format.la_format_prefix)
#define local_octal_format_specifier() \
(current_language->la_octal_format.la_format_specifier)
#define local_octal_format_suffix() \
(current_language->la_octal_format.la_format_suffix)
#define local_decimal_format() \
(current_language->la_decimal_format.la_format)
#define local_decimal_format_prefix() \
(current_language->la_decimal_format.la_format_prefix)
#define local_decimal_format_specifier() \
(current_language->la_decimal_format.la_format_specifier)
#define local_decimal_format_suffix() \
(current_language->la_decimal_format.la_format_suffix)
#define local_hex_format() \
(current_language->la_hex_format.la_format)
#define local_hex_format_prefix() \
(current_language->la_hex_format.la_format_prefix)
#define local_hex_format_specifier() \
(current_language->la_hex_format.la_format_specifier)
#define local_hex_format_suffix() \
(current_language->la_hex_format.la_format_suffix)
#define local_printchar(ch, stream) \
(current_language->la_printchar(ch, stream))
#define local_printstr(stream, string, length, force_ellipses) \
(current_language->la_printstr(stream, string, length, force_ellipses))
/* Test a character to decide whether it can be printed in literal form
or needs to be printed in another representation. For example,
in C the literal form of the character with octal value 141 is 'a'
and the "other representation" is '\141'. The "other representation"
is program language dependent. */
#define PRINT_LITERAL_FORM(c) \
((c)>=0x20 && ((c)<0x7F || (c)>=0xA0) && (!sevenbit_strings || (c)<0x80))
/* Return a format string for printf that will print a number in one of
the local (language-specific) formats. Result is static and is
overwritten by the next call. Takes printf options like "08" or "l"
(to produce e.g. %08x or %lx). */
extern char *
local_octal_format_custom PARAMS ((char *)); /* language.c */
extern char *
local_hex_format_custom PARAMS ((char *)); /* language.c */
/* Return a string that contains a number formatted in one of the local
(language-specific) formats. Result is static and is overwritten by
the next call. Takes printf options like "08" or "l". */
extern char *
local_octal_string PARAMS ((int)); /* language.c */
extern char *
local_octal_string_custom PARAMS ((int, char *));/* language.c */
extern char *
local_hex_string PARAMS ((int)); /* language.c */
extern char *
local_hex_string_custom PARAMS ((int, char *)); /* language.c */
/* 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 const struct language_defn *
language_def PARAMS ((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) */
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