/* Source-language-related definitions for GDB.
- Copyright 1991 Free Software Foundation, Inc.
+ 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 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 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.
+ 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. */
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#if !defined (LANGUAGE_H)
+#define LANGUAGE_H 1
+
+/* Forward decls for prototypes */
+struct value;
+struct objfile;
+struct expression;
+/* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */
/* 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
+#define _LANG_chill
+#define _LANG_fortran
+
+#define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims */
/* 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;
+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_off: Ranges are not checked in GDB expressions. */
extern enum range_check
- {range_check_off, range_check_warn, range_check_on} 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;
+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_off: Types are not checked in GDB expressions. */
extern enum type_check
- {type_check_off, type_check_warn, type_check_on} type_check;
+ {
+ type_check_off, type_check_warn, type_check_on
+ }
+type_check;
\f
+/* 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)(); /* 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 */
-};
+struct language_defn
+ {
+ /* Name of the language */
+
+ char *la_name;
+
+ /* its symtab language-enum (defs.h) */
+
+ enum language la_language;
+
+ /* Its builtin types. This is a vector ended by a NULL pointer. These
+ types can be specified by name in parsing types in expressions,
+ regardless of whether the program being debugged actually defines
+ such a type. */
+
+ struct type **const *la_builtin_type_vector;
+
+ /* Default range checking */
+
+ enum range_check la_range_check;
+
+ /* Default type checking */
+
+ enum type_check la_type_check;
+
+ /* Parser function. */
+
+ int (*la_parser) PARAMS ((void));
+
+ /* Parser error function */
+
+ void (*la_error) PARAMS ((char *));
+
+ /* Evaluate an expression. */
+ struct value *(*evaluate_exp) PARAMS ((struct type *, struct expression *,
+ int *, enum noside));
+
+ void (*la_printchar) PARAMS ((int ch, GDB_FILE * stream));
+
+ void (*la_printstr) PARAMS ((GDB_FILE * stream, char *string,
+ unsigned int length, int width,
+ int force_ellipses));
+
+ void (*la_emitchar) PARAMS ((int ch, GDB_FILE * stream, int quoter));
+
+ struct type *(*la_fund_type) PARAMS ((struct objfile *, int));
+
+ /* Print a type using syntax appropriate for this language. */
+
+ void (*la_print_type) PARAMS ((struct type *, char *, GDB_FILE *, int, int));
+
+ /* Print a value using syntax appropriate for this language. */
+
+ int (*la_val_print) PARAMS ((struct type *, char *, int, CORE_ADDR, GDB_FILE *,
+ int, int, int, enum val_prettyprint));
+
+ /* Print a top-level value using syntax appropriate for this language. */
+
+ int (*la_value_print) PARAMS ((struct value *, GDB_FILE *,
+ int, enum val_prettyprint));
+
+ /* Base 2 (binary) formats. */
+
+ struct language_format_info la_binary_format;
+
+ /* Base 8 (octal) formats. */
+
+ struct language_format_info la_octal_format;
+
+ /* Base 10 (decimal) formats */
+
+ struct language_format_info la_decimal_format;
+
+ /* Base 16 (hexadecimal) formats */
+
+ struct language_format_info la_hex_format;
+
+ /* Table for printing expressions */
+
+ const struct op_print *la_op_print_tab;
+
+ /* Zero if the language has first-class arrays. True if there are no
+ array values, and array objects decay to pointers, as in C. */
+
+ char c_style_arrays;
+
+ /* Index to use for extracting the first element of a string. */
+ char string_lower_bound;
+
+ /* Type of elements of strings. */
+ struct type **string_char_type;
+
+ /* Add fields above this point, so the magic number is always last. */
+ /* Magic number for compat checking */
+
+ long la_magic;
+
+ };
#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. */
+ it for validity.
+
+ The current language affects expression parsing and evaluation
+ (FIXME: it might be cleaner to make the evaluation-related stuff
+ separate exp_opcodes for each different set of semantics. We
+ should at least think this through more clearly with respect to
+ what happens if the language is changed between parsing and
+ evaluation) and printing of things like types and arrays. It does
+ *not* affect symbol-reading-- each source file in a symbol-file has
+ its own language and we should keep track of that regardless of the
+ language when symbols are read. If we want some manual setting for
+ the language of symbol files (e.g. detecting when ".c" files are
+ C++), it should be a seprate setting from the current_language. */
+
+extern const struct language_defn *current_language;
-extern 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)
+ 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;
+ {
+ language_mode_auto, language_mode_manual
+ }
+language_mode;
\f
/* These macros define the behaviour of the expression
evaluator. */
/* "cast" really means conversion */
/* FIXME -- should be a setting in language_defn */
-#define CAST_IS_CONVERSION (current_language->la_language == language_c)
+#define CAST_IS_CONVERSION (current_language->la_language == language_c || \
+ current_language->la_language == language_cplus)
+
+extern void
+language_info PARAMS ((int));
-void language_info();
-void set_language();
+extern enum language
+set_language PARAMS ((enum 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();
+#define create_fundamental_type(objfile,typeid) \
+ (current_language->la_fund_type(objfile, typeid))
+
+#define LA_PRINT_TYPE(type,varstring,stream,show,level) \
+ (current_language->la_print_type(type,varstring,stream,show,level))
+
+#define LA_VAL_PRINT(type,valaddr,offset,addr,stream,fmt,deref,recurse,pretty) \
+ (current_language->la_val_print(type,valaddr,offset,addr,stream,fmt,deref, \
+ recurse,pretty))
+#define LA_VALUE_PRINT(val,stream,fmt,pretty) \
+ (current_language->la_value_print(val,stream,fmt,pretty))
+
+/* 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 LA_PRINT_CHAR(ch, stream) \
+ (current_language->la_printchar(ch, stream))
+#define LA_PRINT_STRING(stream, string, length, width, force_ellipses) \
+ (current_language->la_printstr(stream, string, length, width, force_ellipses))
+#define LA_EMIT_CHAR(ch, stream, quoter) \
+ (current_language->la_emitchar(ch, stream, quoter))
+
+/* 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_decimal_format_custom PARAMS ((char *)); /* language.c */
+
+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 the hex digits of the number. No preceeding
+ "0x" */
+
+extern char *
+ longest_raw_hex_string PARAMS ((LONGEST));
+
+/* 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 "08l" or "l". */
+
+extern char *
+ local_hex_string PARAMS ((unsigned long)); /* language.c */
+
+extern char *
+ longest_local_hex_string PARAMS ((LONGEST)); /* language.c */
+
+extern char *
+ local_hex_string_custom PARAMS ((unsigned long, char *)); /* language.c */
+
+extern char *
+ longest_local_hex_string_custom PARAMS ((LONGEST, char *)); /* language.c */
-/* Hexadecimal number formatting is in defs.h because it is so common
- throughout GDB. */
+/* Type predicates */
-/* 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). */
+extern int
+simple_type PARAMS ((struct type *));
-#define local_octal_format() (current_language->la_octal_format)
-char *local_octal_format_custom();
+extern int
+ordered_type PARAMS ((struct type *));
-/* 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();
+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 */
-void binop_type_check();
+/* 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 */
-void op_error();
+
+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)
-void type_error();
-void range_error();
+
+extern void
+ type_error
+PARAMS ((char *,...))
+ATTR_FORMAT (printf, 1, 2);
+
+ void
+ range_error PARAMS ((char *,...))
+ ATTR_FORMAT (printf, 1, 2);
/* Data: Does this value represent "truth" to the current language? */
-int value_true();
+
+ extern int
+ value_true PARAMS ((struct value *));
+
+ extern struct type *lang_bool_type PARAMS ((void));
+
+/* The type used for Boolean values in the current language. */
+#define LA_BOOL_TYPE lang_bool_type ()
/* Misc: The string representing a particular enum language. */
-char *language_str();
+
+ extern enum language language_enum PARAMS ((char *str));
+
+ 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). */
-void add_language (); /* Arg is &language_defn */
-extern enum language get_frame_language (); /* In stack.c */
+ 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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