/* Source-language-related definitions for GDB.
- Copyright 1991, 1992 Free Software Foundation, Inc.
+
+ Copyright (C) 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2003, 2004,
+ 2007, 2008, 2009 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 3 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, see <http://www.gnu.org/licenses/>. */
#if !defined (LANGUAGE_H)
#define LANGUAGE_H 1
-#ifdef __STDC__ /* Forward decls for prototypes */
+/* Forward decls for prototypes */
struct value;
struct objfile;
-/* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */
-#endif
+struct frame_info;
+struct expression;
+struct ui_file;
+struct value_print_options;
-/* 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 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;
-\f
-/* Information for doing language dependent formatting of printed values. */
+ {
+ type_check_off, type_check_warn, type_check_on
+ }
+type_check;
-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. */
+/* 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;
+
+/* array_ordering ==
+ array_row_major: Arrays are in row major order
+ array_column_major: Arrays are in column major order.*/
+
+extern enum array_ordering
+ {
+ array_row_major, array_column_major
+ }
+array_ordering;
- 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). */
+/* case_sensitivity ==
+ case_sensitive_on: Case sensitivity in name matching is used
+ case_sensitive_off: Case sensitivity in name matching is not used */
- char *la_format_prefix;
+extern enum case_sensitivity
+ {
+ case_sensitive_on, case_sensitive_off
+ }
+case_sensitivity;
- /* 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;
+/* macro_expansion ==
+ macro_expansion_no: No macro expansion is available
+ macro_expansion_c: C-like macro expansion is available */
- /* 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). */
+enum macro_expansion
+ {
+ macro_expansion_no, macro_expansion_c
+ };
- char *la_format_suffix; /* Suffix for custom format string */
+\f
+/* Per architecture (OS/ABI) language information. */
+
+struct language_arch_info
+{
+ /* Its primitive 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 **primitive_type_vector;
+ /* Type of elements of strings. */
+ struct type *string_char_type;
+
+ /* Symbol name of type to use as boolean type, if defined. */
+ const char *bool_type_symbol;
+ /* Otherwise, this is the default boolean builtin type. */
+ struct type *bool_type_default;
};
/* Structure tying together assorted information about a language. */
struct language_defn
-{
- /* Name of the language */
-
- char *la_name;
+ {
+ /* Name of the language */
- /* its symtab language-enum (defs.h) */
+ char *la_name;
- enum language la_language;
+ /* its symtab language-enum (defs.h) */
- /* Its builtin types */
+ enum language la_language;
- struct type ** const *la_builtin_type_vector;
+ /* Default range checking */
- /* Default range checking */
+ enum range_check la_range_check;
- enum range_check la_range_check;
+ /* Default type checking */
- /* Default type checking */
+ enum type_check la_type_check;
- enum type_check la_type_check;
+ /* Default case sensitivity */
+ enum case_sensitivity la_case_sensitivity;
- /* Parser function. */
-
- int (*la_parser) PARAMS((void));
+ /* Multi-dimensional array ordering */
+ enum array_ordering la_array_ordering;
- /* Parser error function */
+ /* Style of macro expansion, if any, supported by this language. */
+ enum macro_expansion la_macro_expansion;
- void (*la_error) PARAMS ((char *));
+ /* Definitions related to expression printing, prefixifying, and
+ dumping */
- void (*la_printchar) PARAMS ((int, GDB_FILE *));
+ const struct exp_descriptor *la_exp_desc;
- void (*la_printstr) PARAMS ((GDB_FILE *, char *, unsigned int, int));
+ /* Parser function. */
- struct type *(*la_fund_type) PARAMS ((struct objfile *, int));
+ int (*la_parser) (void);
- /* Print a type using syntax appropriate for this language. */
+ /* Parser error function */
- void (*la_print_type) PARAMS ((struct type *, char *, GDB_FILE *, int, int));
+ void (*la_error) (char *);
- /* Print a value using syntax appropriate for this language. */
+ /* 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. */
- int (*la_val_print) PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *,
- int, int, int, enum val_prettyprint));
+ void (*la_post_parser) (struct expression ** expp, int void_context_p);
- /* Longest signed integral type */
+ void (*la_printchar) (int ch, struct type *chtype, struct ui_file * stream);
- struct type **la_longest_int;
+ void (*la_printstr) (struct ui_file * stream, struct type *elttype,
+ const gdb_byte *string, unsigned int length,
+ int force_ellipses,
+ const struct value_print_options *);
- /* Longest unsigned integral type */
+ void (*la_emitchar) (int ch, struct type *chtype,
+ struct ui_file * stream, int quoter);
- struct type **la_longest_unsigned_int;
+ /* Print a type using syntax appropriate for this language. */
- /* Longest floating point type */
+ void (*la_print_type) (struct type *, char *, struct ui_file *, int,
+ int);
- struct type **la_longest_float;
+ /* Print a typedef using syntax appropriate for this language.
+ TYPE is the underlying type. NEW_SYMBOL is the symbol naming
+ the type. STREAM is the output stream on which to print. */
- /* Base 2 (binary) formats. */
+ void (*la_print_typedef) (struct type *type, struct symbol *new_symbol,
+ struct ui_file *stream);
- struct language_format_info la_binary_format;
+ /* Print a value using syntax appropriate for this language. */
- /* Base 8 (octal) formats. */
+ int (*la_val_print) (struct type *, const gdb_byte *, int, CORE_ADDR,
+ struct ui_file *, int,
+ const struct value_print_options *);
- struct language_format_info la_octal_format;
+ /* Print a top-level value using syntax appropriate for this language. */
- /* Base 10 (decimal) formats */
+ int (*la_value_print) (struct value *, struct ui_file *,
+ const struct value_print_options *);
- struct language_format_info la_decimal_format;
+ /* 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) (struct frame_info *, CORE_ADDR);
- /* Base 16 (hexadecimal) formats */
+ /* Now come some hooks for lookup_symbol. */
- struct language_format_info la_hex_format;
+ /* If this is non-NULL, specifies the name that of the implicit
+ local variable that refers to the current object instance. */
+ char *la_name_of_this;
- /* Table for printing expressions */
+ /* 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. */
- const struct op_print *la_op_print_tab;
+ struct symbol *(*la_lookup_symbol_nonlocal) (const char *,
+ const char *,
+ const struct block *,
+ const domain_enum);
- /* Add fields above this point, so the magic number is always last. */
- /* Magic number for compat checking */
+ /* Find the definition of the type with the given name. */
+ struct type *(*la_lookup_transparent_type) (const char *);
- long la_magic;
+ /* Return demangled language symbol, or NULL. */
+ char *(*la_demangle) (const char *mangled, int options);
-};
+ /* Return class name of a mangled method name or NULL. */
+ char *(*la_class_name_from_physname) (const char *physname);
+
+ /* 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;
+
+ /* The list of characters forming word boundaries. */
+ char *(*la_word_break_characters) (void);
+
+ /* Should return a NULL terminated array of all symbols which
+ are possible completions for TEXT. WORD is the entire command
+ on which the completion is being made. */
+ char **(*la_make_symbol_completion_list) (char *text, char *word);
+
+ /* The per-architecture (OS/ABI) language information. */
+ void (*la_language_arch_info) (struct gdbarch *,
+ struct language_arch_info *);
+
+ /* Print the index of an element of an array. */
+ void (*la_print_array_index) (struct value *index_value,
+ struct ui_file *stream,
+ const struct value_print_options *options);
+
+ /* Return non-zero if TYPE should be passed (and returned) by
+ reference at the language level. */
+ int (*la_pass_by_reference) (struct type *type);
+
+ /* Obtain a string from the inferior, storing it in a newly allocated
+ buffer in BUFFER, which should be freed by the caller. If the
+ in- and out-parameter *LENGTH is specified at -1, the string is
+ read until a null character of the appropriate width is found -
+ otherwise the string is read to the length of characters specified.
+ On completion, *LENGTH will hold the size of the string in characters.
+ If a *LENGTH of -1 was specified it will count only actual
+ characters, excluding any eventual terminating null character.
+ Otherwise *LENGTH will include all characters - including any nulls.
+ CHARSET will hold the encoding used in the string. */
+ void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length,
+ const char **charset);
+
+ /* Add fields above this point, so the magic number is always last. */
+ /* Magic number for compat checking */
+
+ long la_magic;
+
+ };
#define LANG_MAGIC 910823L
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. */
+ C++), it should be a separate setting from the current_language. */
extern const struct language_defn *current_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;
+
+struct type *language_bool_type (const struct language_defn *l,
+ struct gdbarch *gdbarch);
+
+struct type *language_string_char_type (const struct language_defn *l,
+ struct gdbarch *gdbarch);
+
+struct type *language_lookup_primitive_type_by_name (const struct language_defn *l,
+ struct gdbarch *gdbarch,
+ const char *name);
+
\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 || \
- current_language->la_language == language_cplus)
+ current_language->la_language == language_cplus || \
+ current_language->la_language == language_objc)
-extern void
-language_info PARAMS ((int));
-
-extern void
-set_language PARAMS ((enum language));
+extern void language_info (int);
+extern enum language set_language (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)
-
-#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))
-
-/* 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))
+#define LA_PRINT_TYPEDEF(type,new_symbol,stream) \
+ (current_language->la_print_typedef(type,new_symbol,stream))
+
+#define LA_VAL_PRINT(type,valaddr,offset,addr,stream,recurse,options) \
+ (current_language->la_val_print(type,valaddr,offset,addr,stream, \
+ recurse,options))
+#define LA_VALUE_PRINT(val,stream,options) \
+ (current_language->la_value_print(val,stream,options))
+
+#define LA_PRINT_CHAR(ch, type, stream) \
+ (current_language->la_printchar(ch, type, stream))
+#define LA_PRINT_STRING(stream, elttype, string, length, force_ellipses,options) \
+ (current_language->la_printstr(stream, elttype, string, length, \
+ force_ellipses,options))
+#define LA_EMIT_CHAR(ch, type, stream, quoter) \
+ (current_language->la_emitchar(ch, type, stream, quoter))
+#define LA_GET_STRING(value, buffer, length, encoding) \
+ (current_language->la_get_string(value, buffer, length, encoding))
+
+#define LA_PRINT_ARRAY_INDEX(index_value, stream, optins) \
+ (current_language->la_print_array_index(index_value, stream, options))
/* Test a character to decide whether it can be printed in literal form
or needs to be printed in another representation. For example,
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 */
+#define PRINT_LITERAL_FORM(c) \
+ ((c) >= 0x20 \
+ && ((c) < 0x7F || (c) >= 0xA0) \
+ && (!sevenbit_strings || (c) < 0x80))
-extern char *
-local_hex_format_custom PARAMS ((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" */
-/* 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 */
+extern char *longest_raw_hex_string (LONGEST);
+#endif
/* Type predicates */
-extern int
-simple_type PARAMS ((struct type *));
+extern int simple_type (struct type *);
-extern int
-ordered_type PARAMS ((struct type *));
+extern int ordered_type (struct type *);
-extern int
-same_type PARAMS ((struct type *, struct type *));
+extern int same_type (struct type *, struct type *);
-extern int
-integral_type PARAMS ((struct type *));
+extern int integral_type (struct type *);
-extern int
-numeric_type PARAMS ((struct type *));
+extern int numeric_type (struct type *);
-extern int
-character_type PARAMS ((struct type *));
+extern int character_type (struct type *);
-extern int
-boolean_type PARAMS ((struct type *));
+extern int boolean_type (struct type *);
-extern int
-float_type PARAMS ((struct type *));
+extern int float_type (struct type *);
-extern int
-pointer_type PARAMS ((struct type *));
+extern int pointer_type (struct type *);
-extern int
-structured_type PARAMS ((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 PARAMS ((struct value *, struct value *, int));
+extern void binop_type_check (struct value *, struct value *, int);
/* Error messages */
-extern void
-op_error PARAMS ((char *fmt, enum exp_opcode, int));
+extern void type_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
-#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 ();
+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 PARAMS ((struct value *));
+extern int value_true (struct value *);
/* Misc: The string representing a particular enum language. */
-extern const struct language_defn *
-language_def PARAMS ((enum language));
+extern enum language language_enum (char *str);
-extern char *
-language_str PARAMS ((enum language));
+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 PARAMS ((const struct language_defn *));
+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 (struct frame_info *, CORE_ADDR pc);
+
+/* Return demangled language symbol, or NULL. */
+extern char *language_demangle (const struct language_defn *current_language,
+ const char *mangled, int options);
+
+/* Return class name from physname, or NULL. */
+extern char *language_class_name_from_physname (const struct language_defn *,
+ const char *physname);
+
+/* Splitting strings into words. */
+extern char *default_word_break_characters (void);
+
+/* Print the index of an array element using the C99 syntax. */
+extern void default_print_array_index (struct value *index_value,
+ struct ui_file *stream,
+ const struct value_print_options *options);
+
+/* Return non-zero if TYPE should be passed (and returned) by
+ reference at the language level. */
+int language_pass_by_reference (struct type *type);
+
+/* Return zero; by default, types are passed by value at the language
+ level. The target ABI may pass or return some structs by reference
+ independent of this. */
+int default_pass_by_reference (struct type *type);
+
+/* The default implementation of la_print_typedef. */
+void default_print_typedef (struct type *type, struct symbol *new_symbol,
+ struct ui_file *stream);
+
+void default_get_string (struct value *value, gdb_byte **buffer, int *length,
+ const char **charset);
-extern enum language
-get_frame_language PARAMS ((void)); /* In stack.c */
+void c_get_string (struct value *value, gdb_byte **buffer, int *length,
+ const char **charset);
-#endif /* defined (LANGUAGE_H) */
+#endif /* defined (LANGUAGE_H) */
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