/* 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.
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
+#define _LANG_chill
/* range_mode ==
range_mode_auto: range_check set automatically to default of language.
extern enum 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 *));
+
+ void (*la_printchar) PARAMS ((int, GDB_FILE *));
+
+ void (*la_printstr) PARAMS ((GDB_FILE *, char *, unsigned int, int));
+
+ 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 *, 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));
+
+ /* Longest floating point type */
+
+ struct type **la_longest_float;
+
+ /* 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;
+
+ /* 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;
+
+/* 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 struct language_defn *current_language;
+extern const struct language_defn *expected_language;
/* language_mode ==
language_mode_auto: current_language automatically set upon selection
evaluator. */
/* Should we strictly type check expressions? */
-#define STRICT_TYPE (type_check != range_check_off)
+#define STRICT_TYPE (type_check != type_check_off)
/* Should we range check values against the domain of their type? */
-#define RANGE_CHECK (range_check != type_check_off)
+#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)
+#define CAST_IS_CONVERSION (current_language->la_language == language_c || \
+ current_language->la_language == language_cplus)
+
+extern void
+language_info PARAMS ((int));
+
+extern void
+set_language PARAMS ((enum language));
-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
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. */
+#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,addr,stream,fmt,deref,recurse,pretty) \
+ (current_language->la_val_print(type,valaddr,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, 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_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 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_hex_string PARAMS ((unsigned long)); /* language.c */
+
+extern char *
+local_hex_string_custom PARAMS ((unsigned long, char *)); /* language.c */
-/* 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). */
+/* Type predicates */
-#define local_octal_format() (current_language->la_octal_format)
-char *local_octal_format_custom();
+extern int
+simple_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
+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 */
-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 ();
+
+void
+range_error ();
/* Data: Does this value represent "truth" to the current language? */
-int value_true();
+
+extern int
+value_true PARAMS ((struct value *));
/* Misc: The string representing a particular enum language. */
-char *language_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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