[deliverable/binutils-gdb.git] / gdb / language.h

/* Source-language-related definitions for GDB.
   Copyright 1991 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.  */

/* 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;
\f
/* 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)();	/* Parser function */
  void		 (*la_error)();		/* 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 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;
\f
/* These macros define the behaviour of the expression 
   evaluator.  */

/* Should we strictly type check expressions? */
#define STRICT_TYPE (type_check != range_check_off)

/* Should we range check values against the domain of their type? */
#define RANGE_CHECK (range_check != type_check_off)

/* "cast" really means conversion */
/* FIXME -- should be a setting in language_defn */
#define CAST_IS_CONVERSION (current_language->la_language == language_c)

void language_info();
void set_language();
\f
/* 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)
struct type *binop_result_type();

/* 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)
char *local_octal_format_custom();

/* Type predicates */
int simple_type();
int ordered_type();
int same_type();
int integral_type();
int numeric_type();
int character_type();
int boolean_type();
int float_type();
int pointer_type();
int structured_type();

/* Checks Binary and Unary operations for semantic type correctness */
void binop_type_check();
#define unop_type_check(v,o) binop_type_check((v),NULL,(o))

/* Error messages */
void op_error();
#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)
void type_error();
void range_error();

/* Data:  Does this value represent "truth" to the current language?  */
int value_true();

/* Misc:  The string representing a particular enum language.  */
char *language_str();

/* Add a language to the set known by GDB (at initialization time).  */
void add_language ();		/* Arg is &language_defn */

extern enum language get_frame_language ();	/* In stack.c */
Commit	Line	Data
c8023e66 JG	1	/* Source-language-related definitions for GDB.
	2	Copyright 1991 Free Software Foundation, Inc.
	3	Contributed by the Department of Computer Science at the State University
	4	of New York at Buffalo.
	5
	6	This file is part of GDB.
	7
	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.
	12
	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.
	17
	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. */
	21
	22	/* This used to be included to configure GDB for one or more specific
	23	languages. Now it is shortcutted to configure for all of them. FIXME. */
	24	/* #include "lang_def.h" */
	25	#define _LANG_c
	26	#define _LANG_m2
	27
	28	/* range_mode ==
	29	range_mode_auto: range_check set automatically to default of language.
	30	range_mode_manual: range_check set manually by user. */
	31
	32	extern enum range_mode {range_mode_auto, range_mode_manual} range_mode;
	33
	34	/* range_check ==
	35	range_check_on: Ranges are checked in GDB expressions, producing errors.
	36	range_check_warn: Ranges are checked, producing warnings.
	37	range_check_off: Ranges are not checked in GDB expressions. */
	38
	39	extern enum range_check
	40	{range_check_off, range_check_warn, range_check_on} range_check;
	41
	42	/* type_mode ==
	43	type_mode_auto: type_check set automatically to default of language
	44	type_mode_manual: type_check set manually by user. */
	45
	46	extern enum type_mode {type_mode_auto, type_mode_manual} type_mode;
	47
	48	/* type_check ==
	49	type_check_on: Types are checked in GDB expressions, producing errors.
	50	type_check_warn: Types are checked, producing warnings.
	51	type_check_off: Types are not checked in GDB expressions. */
	52
	53	extern enum type_check
	54	{type_check_off, type_check_warn, type_check_on} type_check;
	55	\f
	56	/* Structure tying together assorted information about a language. */
	57
	58	struct language_defn {
	59	char * la_name; /* Name of the language */
	60	enum language la_language; /* its symtab language-enum (defs.h) */
	61	struct type ** const
	62	la_builtin_type_vector; / Its builtin types */
	63	enum range_check la_range_check; /* Default range checking */
	64	enum type_check la_type_check; /* Default type checking */
65	int (la_parser)(); / Parser function */
66	void (la_error)(); / Parser error function */
67	struct type *la_longest_int; / Longest signed integral type */
68	struct type *la_longest_unsigned_int; / Longest uns integral type */
69	struct type *la_longest_float; / Longest floating point type */
70	char la_hex_format; / Hexadecimal printf format str */
71	char la_hex_format_pre; / Prefix for custom format string */
72	char la_hex_format_suf; / Suffix for custom format string */
73	char la_octal_format; / Octal printf format str */
74	char la_octal_format_pre; / Prefix for custom format string */
75	char la_octal_format_suf; / Suffix for custom format string */
76	const struct op_print
77	la_op_print_tab; / Table for printing expressions */
78	/* Add fields above this point, so the magic number is always last. */
79	long la_magic; /* Magic number for compat checking */
80	};
81
82	#define LANG_MAGIC 910823L
83
84	/* Pointer to the language_defn for our current language. This pointer
85	always points to some valid struct; it can be used without checking
86	it for validity. */
87
88	extern struct language_defn *current_language;
89
90	/* language_mode ==
91	language_mode_auto: current_language automatically set upon selection
92	of scope (e.g. stack frame)
93	language_mode_manual: current_language set only by user. */
94
95	extern enum language_mode
96	{language_mode_auto, language_mode_manual} language_mode;
97	\f
98	/* These macros define the behaviour of the expression
99	evaluator. */
100
101	/* Should we strictly type check expressions? */
102	#define STRICT_TYPE (type_check != range_check_off)
103
104	/* Should we range check values against the domain of their type? */
105	#define RANGE_CHECK (range_check != type_check_off)
106
107	/* "cast" really means conversion */
108	/* FIXME -- should be a setting in language_defn */
109	#define CAST_IS_CONVERSION (current_language->la_language == language_c)
110
111	void language_info();
112	void set_language();
113	\f
114	/* This page contains functions that return things that are
115	specific to languages. Each of these functions is based on
116	the current setting of working_lang, which the user sets
117	with the "set language" command. */
118
119	/* Returns some built-in types */
120	#define longest_int() (*current_language->la_longest_int)
121	#define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
122	#define longest_float() (*current_language->la_longest_float)
123	struct type *binop_result_type();
124
125	/* Hexadecimal number formatting is in defs.h because it is so common
126	throughout GDB. */
127
128	/* Return a format string for printf that will print a number in the local
129	(language-specific) octal format. Result is static and is
130	overwritten by the next call. local_octal_format_custom takes printf
131	options like "08" or "l" (to produce e.g. %08x or %lx). */
132
133	#define local_octal_format() (current_language->la_octal_format)
134	char *local_octal_format_custom();
135
136	/* Type predicates */
137	int simple_type();
138	int ordered_type();
139	int same_type();
140	int integral_type();
141	int numeric_type();
142	int character_type();
143	int boolean_type();
144	int float_type();
145	int pointer_type();
146	int structured_type();
147
148	/* Checks Binary and Unary operations for semantic type correctness */
149	void binop_type_check();
150	#define unop_type_check(v,o) binop_type_check((v),NULL,(o))
151
152	/* Error messages */
153	void op_error();
154	#define type_op_error(f,o) \
155	op_error((f),(o),type_check==type_check_on ? 1 : 0)
156	#define range_op_error(f,o) \
157	op_error((f),(o),range_check==range_check_on ? 1 : 0)
158	void type_error();
159	void range_error();
160
161	/* Data: Does this value represent "truth" to the current language? */
162	int value_true();
163
164	/* Misc: The string representing a particular enum language. */
165	char *language_str();
166
167	/* Add a language to the set known by GDB (at initialization time). */
168	void add_language (); /* Arg is &language_defn */
d8ce1326 JG	169
d8ce1326 JG	170	extern enum language get_frame_language (); /* In stack.c */