mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
e85c3284f3
* parser-defs.h (null_post_parser): New declaration (default for la_post_parser). * parse.c (parse_exp_1): Move code to parse_exp_in_context and insert call to that function. (parse_exp_in_context): New function, including code formerly in parse_exp_1. Calls language-dependent post-parser after prefixification. (parse_expression_in_context): New exported function. (null_post_parser): New definition. * expression.h (parse_expression_in_context): Add declaration. * p-lang.c (pascal_language_defn): Add trivial post-parser. * c-lang.c (c_language_defn): Ditto. (cplus_language_defn): Ditto. (asm_language_defn): Ditto. (minimal_language_defn): Ditto. * f-lang.c (f_language_defn): Ditto. * jv-lang.c (java_language_defn): Ditto. * language.c (unknown_language_defn): Ditto. (auto_language_defn): Ditto. (local_language_defn): Ditto. * m2-lang.c (m2_language_defn): Ditto. * scm-lang.c (scm_language_defn): Ditto. * obj-lang.c (objc_language_defn): Ditto.
523 lines
17 KiB
C
523 lines
17 KiB
C
/* Source-language-related definitions for GDB.
|
||
|
||
Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2003,
|
||
2004 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., 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;
|
||
struct ui_file;
|
||
|
||
/* 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 left out to configure for all of them. FIXME. */
|
||
/* #include "lang_def.h" */
|
||
#define _LANG_c
|
||
#define _LANG_m2
|
||
#define _LANG_fortran
|
||
#define _LANG_pascal
|
||
|
||
#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;
|
||
|
||
/* 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;
|
||
|
||
/* case_mode ==
|
||
case_mode_auto: case_sensitivity set upon selection of scope
|
||
case_mode_manual: case_sensitivity set only by user. */
|
||
|
||
extern enum case_mode
|
||
{
|
||
case_mode_auto, case_mode_manual
|
||
}
|
||
case_mode;
|
||
|
||
/* case_sensitivity ==
|
||
case_sensitive_on: Case sensitivity in name matching is used
|
||
case_sensitive_off: Case sensitivity in name matching is not used */
|
||
|
||
extern enum case_sensitivity
|
||
{
|
||
case_sensitive_on, case_sensitive_off
|
||
}
|
||
case_sensitivity;
|
||
|
||
/* 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
|
||
{
|
||
/* 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;
|
||
|
||
/* Default case sensitivity */
|
||
enum case_sensitivity la_case_sensitivity;
|
||
|
||
/* Definitions related to expression printing, prefixifying, and
|
||
dumping */
|
||
|
||
const struct exp_descriptor *la_exp_desc;
|
||
|
||
/* Parser function. */
|
||
|
||
int (*la_parser) (void);
|
||
|
||
/* Parser error function */
|
||
|
||
void (*la_error) (char *);
|
||
|
||
/* Given an expression *EXPP created by prefixifying the result of
|
||
la_parser, perform any remaining processing necessary to complete
|
||
its translation. *EXPP may change; la_post_parser is responsible
|
||
for releasing its previous contents, if necessary. If
|
||
VOID_CONTEXT_P, then no value is expected from the expression. */
|
||
|
||
void (*la_post_parser) (struct expression ** expp, int void_context_p);
|
||
|
||
void (*la_printchar) (int ch, struct ui_file * stream);
|
||
|
||
void (*la_printstr) (struct ui_file * stream, char *string,
|
||
unsigned int length, int width,
|
||
int force_ellipses);
|
||
|
||
void (*la_emitchar) (int ch, struct ui_file * stream, int quoter);
|
||
|
||
struct type *(*la_fund_type) (struct objfile *, int);
|
||
|
||
/* Print a type using syntax appropriate for this language. */
|
||
|
||
void (*la_print_type) (struct type *, char *, struct ui_file *, int,
|
||
int);
|
||
|
||
/* Print a value using syntax appropriate for this language. */
|
||
|
||
int (*la_val_print) (struct type *, char *, int, CORE_ADDR,
|
||
struct ui_file *, int, int, int,
|
||
enum val_prettyprint);
|
||
|
||
/* Print a top-level value using syntax appropriate for this language. */
|
||
|
||
int (*la_value_print) (struct value *, struct ui_file *,
|
||
int, enum val_prettyprint);
|
||
|
||
/* PC is possibly an unknown languages trampoline.
|
||
If that PC falls in a trampoline belonging to this language,
|
||
return the address of the first pc in the real function, or 0
|
||
if it isn't a language tramp for this language. */
|
||
CORE_ADDR (*skip_trampoline) (CORE_ADDR pc);
|
||
|
||
/* Now come some hooks for lookup_symbol. */
|
||
|
||
/* If this is non-NULL, lookup_symbol will do the 'field_of_this'
|
||
check, using this function to find the value of this. */
|
||
|
||
/* FIXME: carlton/2003-05-19: Audit all the language_defn structs
|
||
to make sure we're setting this appropriately: I'm sure it
|
||
could be NULL in more languages. */
|
||
|
||
struct value *(*la_value_of_this) (int complain);
|
||
|
||
/* This is a function that lookup_symbol will call when it gets to
|
||
the part of symbol lookup where C looks up static and global
|
||
variables. */
|
||
|
||
struct symbol *(*la_lookup_symbol_nonlocal) (const char *,
|
||
const char *,
|
||
const struct block *,
|
||
const domain_enum,
|
||
struct symtab **);
|
||
|
||
/* Find the definition of the type with the given name. */
|
||
struct type *(*la_lookup_transparent_type) (const char *);
|
||
|
||
/* Return demangled language symbol, or NULL. */
|
||
char *(*la_demangle) (const char *mangled, int options);
|
||
|
||
/* 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;
|
||
|
||
/* The list of characters forming word boundaries. */
|
||
char *(*la_word_break_characters) (void);
|
||
|
||
/* 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.
|
||
|
||
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 separate 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 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 || \
|
||
current_language->la_language == language_cplus || \
|
||
current_language->la_language == language_objc)
|
||
|
||
extern void language_info (int);
|
||
|
||
extern enum language set_language (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. */
|
||
|
||
#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 (char *); /* language.c */
|
||
|
||
extern char *local_octal_format_custom (char *); /* language.c */
|
||
|
||
extern char *local_hex_format_custom (char *); /* language.c */
|
||
|
||
#if 0
|
||
/* FIXME: cagney/2000-03-04: This function does not appear to be used.
|
||
It can be deleted once 5.0 has been released. */
|
||
/* Return a string that contains the hex digits of the number. No preceeding
|
||
"0x" */
|
||
|
||
extern char *longest_raw_hex_string (LONGEST);
|
||
#endif
|
||
|
||
/* 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 (LONGEST); /* language.c */
|
||
|
||
extern char *local_hex_string_custom (LONGEST, char *); /* language.c */
|
||
|
||
/* Type predicates */
|
||
|
||
extern int simple_type (struct type *);
|
||
|
||
extern int ordered_type (struct type *);
|
||
|
||
extern int same_type (struct type *, struct type *);
|
||
|
||
extern int integral_type (struct type *);
|
||
|
||
extern int numeric_type (struct type *);
|
||
|
||
extern int character_type (struct type *);
|
||
|
||
extern int boolean_type (struct type *);
|
||
|
||
extern int float_type (struct type *);
|
||
|
||
extern int pointer_type (struct type *);
|
||
|
||
extern int structured_type (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 (struct value *, struct value *, int);
|
||
|
||
/* Error messages */
|
||
|
||
extern void op_error (const char *lhs, enum exp_opcode,
|
||
const char *rhs);
|
||
|
||
extern void type_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
|
||
|
||
extern void range_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
|
||
|
||
/* Data: Does this value represent "truth" to the current language? */
|
||
|
||
extern int value_true (struct value *);
|
||
|
||
extern struct type *lang_bool_type (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. */
|
||
|
||
extern enum language language_enum (char *str);
|
||
|
||
extern const struct language_defn *language_def (enum language);
|
||
|
||
extern char *language_str (enum language);
|
||
|
||
/* Add a language to the set known by GDB (at initialization time). */
|
||
|
||
extern void add_language (const struct language_defn *);
|
||
|
||
extern enum language get_frame_language (void); /* In stack.c */
|
||
|
||
/* Check for a language-specific trampoline. */
|
||
|
||
extern CORE_ADDR skip_language_trampoline (CORE_ADDR pc);
|
||
|
||
/* Return demangled language symbol, or NULL. */
|
||
extern char *language_demangle (const struct language_defn *current_language,
|
||
const char *mangled, int options);
|
||
|
||
/* Splitting strings into words. */
|
||
extern char *default_word_break_characters (void);
|
||
|
||
#endif /* defined (LANGUAGE_H) */
|