/* Source-language-related definitions for GDB.
- Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2003,
- 2004 Free Software Foundation, Inc.
+ Copyright (C) 1991-2019 Free Software Foundation, Inc.
Contributed by the Department of Computer Science at the State University
of New York at Buffalo.
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
+ 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,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (LANGUAGE_H)
#define LANGUAGE_H 1
-/* Forward decls for prototypes */
+#include "symtab.h"
+#include "gdbsupport/function-view.h"
+#include "expression.h"
+
+/* Forward decls for prototypes. */
struct value;
struct objfile;
-struct expression;
+struct frame_info;
struct ui_file;
+struct value_print_options;
+struct type_print_options;
+struct lang_varobj_ops;
+struct parser_state;
+class compile_instance;
+struct completion_match_for_lcd;
+class innermost_block_tracker;
-/* 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 */
+#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_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_auto: case_sensitivity set upon selection of scope.
case_mode_manual: case_sensitivity set only by user. */
extern enum case_mode
}
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;
+
+
/* case_sensitivity ==
- case_sensitive_on: Case sensitivity in name matching is used
- case_sensitive_off: Case sensitivity in name matching is not used */
+ 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;
-\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;
+/* macro_expansion ==
+ macro_expansion_no: No macro expansion is available.
+ macro_expansion_c: C-like macro expansion is available. */
- /* 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 */
+enum macro_expansion
+ {
+ macro_expansion_no, macro_expansion_c
};
+\f
/* Per architecture (OS/ABI) language information. */
struct language_arch_info
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;
-};
-struct type *language_string_char_type (const struct language_defn *l,
- struct gdbarch *gdbarch);
+ /* Symbol wrappers around primitive_type_vector, so that the symbol lookup
+ machinery can return them. */
+ struct symbol **primitive_type_symbols;
+
+ /* Type of elements of strings. */
+ struct type *string_char_type;
-struct type *language_lookup_primitive_type_by_name (const struct language_defn *l,
- struct gdbarch *gdbarch,
- const char *name);
+ /* 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 */
+ /* Name of the language. */
- char *la_name;
+ const char *la_name;
- /* its symtab language-enum (defs.h) */
+ /* Natural or official name of the language. */
- enum language la_language;
+ const char *la_natural_name;
- /* 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. */
+ /* its symtab language-enum (defs.h). */
- struct type **const *la_builtin_type_vector;
+ enum language la_language;
- /* Default range checking */
+ /* Default range checking. */
enum range_check la_range_check;
- /* Default type checking */
+ /* Default case sensitivity. */
+ enum case_sensitivity la_case_sensitivity;
- enum type_check la_type_check;
+ /* Multi-dimensional array ordering. */
+ enum array_ordering la_array_ordering;
- /* Default case sensitivity */
- enum case_sensitivity la_case_sensitivity;
+ /* Style of macro expansion, if any, supported by this language. */
+ enum macro_expansion la_macro_expansion;
- /* Definitions related to expression printing, prefixifying, and
- dumping */
+ /* A NULL-terminated array of file extensions for this language.
+ The extension must include the ".", like ".c". If this
+ language doesn't need to provide any filename extensions, this
+ may be NULL. */
- const struct exp_descriptor *la_exp_desc;
+ const char *const *la_filename_extensions;
- /* Parser function. */
+ /* Definitions related to expression printing, prefixifying, and
+ dumping. */
- int (*la_parser) (void);
+ const struct exp_descriptor *la_exp_desc;
- /* Parser error function */
+ /* Parser function. */
- void (*la_error) (char *);
+ int (*la_parser) (struct parser_state *);
/* 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_CONTEXT_P, then no value is expected from the expression.
+ If COMPLETING is non-zero, then the expression has been parsed
+ for completion, not evaluation. */
+
+ void (*la_post_parser) (expression_up *expp, int void_context_p,
+ int completing, innermost_block_tracker *tracker);
+
+ void (*la_printchar) (int ch, struct type *chtype,
+ struct ui_file * stream);
+
+ void (*la_printstr) (struct ui_file * stream, struct type *elttype,
+ const gdb_byte *string, unsigned int length,
+ const char *encoding, int force_ellipses,
+ const struct value_print_options *);
- void (*la_post_parser) (struct expression ** expp, int void_context_p);
+ void (*la_emitchar) (int ch, struct type *chtype,
+ struct ui_file * stream, int quoter);
- void (*la_printchar) (int ch, struct ui_file * stream);
+ /* Print a type using syntax appropriate for this language. */
- void (*la_printstr) (struct ui_file * stream, char *string,
- unsigned int length, int width,
- int force_ellipses);
+ void (*la_print_type) (struct type *, const char *, struct ui_file *, int,
+ int, const struct type_print_options *);
- void (*la_emitchar) (int ch, struct ui_file * stream, int quoter);
+ /* 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. */
- struct type *(*la_fund_type) (struct objfile *, int);
+ void (*la_print_typedef) (struct type *type, struct symbol *new_symbol,
+ struct ui_file *stream);
- /* Print a type using syntax appropriate for this language. */
+ /* Print a value using syntax appropriate for this language.
+
+ TYPE is the type of the sub-object to be printed.
- void (*la_print_type) (struct type *, char *, struct ui_file *, int,
- int);
+ EMBEDDED_OFFSET is the offset into the outermost object of the
+ sub-object represented by TYPE. This is the object which this
+ call should print. Note that the enclosing type is not
+ available.
- /* Print a value using syntax appropriate for this language. */
+ ADDRESS is the address in the inferior of the enclosing object.
- int (*la_val_print) (struct type *, char *, int, CORE_ADDR,
- struct ui_file *, int, int, int,
- enum val_prettyprint);
+ STREAM is the stream on which the value is to be printed.
- /* Print a top-level value using syntax appropriate for this language. */
+ RECURSE is the recursion depth. It is zero-based.
- int (*la_value_print) (struct value *, struct ui_file *,
- int, enum val_prettyprint);
+ OPTIONS are the formatting options to be used when
+ printing. */
+
+ void (*la_val_print) (struct type *type,
+ int embedded_offset, CORE_ADDR address,
+ struct ui_file *stream, int recurse,
+ struct value *val,
+ const struct value_print_options *options);
+
+ /* Print a top-level value using syntax appropriate for this language. */
+
+ void (*la_value_print) (struct value *, struct ui_file *,
+ const struct value_print_options *);
+
+ /* Given a symbol VAR, the corresponding block VAR_BLOCK (if any) and a
+ stack frame id FRAME, read the value of the variable and return (pointer
+ to a) struct value containing the value.
+
+ VAR_BLOCK is needed if there's a possibility for VAR to be outside
+ FRAME. This is what happens if FRAME correspond to a nested function
+ and VAR is defined in the outer function. If callers know that VAR is
+ located in FRAME or is global/static, NULL can be passed as VAR_BLOCK.
+
+ Throw an error if the variable cannot be found. */
+
+ struct value *(*la_read_var_value) (struct symbol *var,
+ const struct block *var_block,
+ struct frame_info *frame);
/* 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);
+ CORE_ADDR (*skip_trampoline) (struct frame_info *, CORE_ADDR);
/* 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. */
+ /* If this is non-NULL, specifies the name that of the implicit
+ local variable that refers to the current object instance. */
+
+ const char *la_name_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. */
+ /* True if the symbols names should be stored in GDB's data structures
+ for minimal/partial/full symbols using their linkage (aka mangled)
+ form; false if the symbol names should be demangled first.
- struct value *(*la_value_of_this) (int complain);
+ Most languages implement symbol lookup by comparing the demangled
+ names, in which case it is advantageous to store that information
+ already demangled, and so would set this field to false.
+
+ On the other hand, some languages have opted for doing symbol
+ lookups by comparing mangled names instead, for reasons usually
+ specific to the language. Those languages should set this field
+ to true.
+
+ And finally, other languages such as C or Asm do not have
+ the concept of mangled vs demangled name, so those languages
+ should set this field to true as well, to prevent any accidental
+ demangling through an unrelated language's demangler. */
+
+ const bool la_store_sym_names_in_linkage_form_p;
/* 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 **);
+ struct block_symbol (*la_lookup_symbol_nonlocal)
+ (const struct language_defn *,
+ const char *,
+ const struct block *,
+ const domain_enum);
/* 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);
- /* Return class name of a mangled method name or NULL. */
- char *(*la_class_name_from_physname) (const char *physname);
-
- /* Base 2 (binary) formats. */
-
- struct language_format_info la_binary_format;
-
- /* Base 8 (octal) formats. */
+ /* Demangle a symbol according to this language's rules. Unlike
+ la_demangle, this does not take any options.
- struct language_format_info la_octal_format;
+ *DEMANGLED will be set by this function.
+
+ If this function returns 0, then *DEMANGLED must always be set
+ to NULL.
- /* Base 10 (decimal) formats */
+ If this function returns 1, the implementation may set this to
+ a xmalloc'd string holding the demangled form. However, it is
+ not required to. The string, if any, is owned by the caller.
- struct language_format_info la_decimal_format;
+ The resulting string should be of the form that will be
+ installed into a symbol. */
+ int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled);
- /* Base 16 (hexadecimal) formats */
-
- struct language_format_info la_hex_format;
+ /* Return class name of a mangled method name or NULL. */
+ char *(*la_class_name_from_physname) (const char *physname);
- /* Table for printing expressions */
+ /* 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. */
+ 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. */
+ /* 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);
+ const char *(*la_word_break_characters) (void);
+
+ /* Add to the completion tracker all symbols which are possible
+ completions for TEXT. WORD is the entire command on which the
+ completion is being made. If CODE is TYPE_CODE_UNDEF, then all
+ symbols should be examined; otherwise, only STRUCT_DOMAIN
+ symbols whose type has a code of CODE should be matched. */
+ void (*la_collect_symbol_completion_matches)
+ (completion_tracker &tracker,
+ complete_symbol_mode mode,
+ symbol_name_match_type match_type,
+ const char *text,
+ const char *word,
+ enum type_code code);
/* The per-architecture (OS/ABI) language information. */
void (*la_language_arch_info) (struct gdbarch *,
struct language_arch_info *);
- /* Add fields above this point, so the magic number is always last. */
- /* Magic number for compat checking */
-
- long la_magic;
+ /* 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);
+
+ /* Return an expression that can be used for a location
+ watchpoint. TYPE is a pointer type that points to the memory
+ to watch, and ADDR is the address of the watched memory. */
+ gdb::unique_xmalloc_ptr<char> (*la_watch_location_expression)
+ (struct type *type, CORE_ADDR addr);
+
+ /* Return a pointer to the function that should be used to match a
+ symbol name against LOOKUP_NAME, according to this language's
+ rules. The matching algorithm depends on LOOKUP_NAME. For
+ example, on Ada, the matching algorithm depends on the symbol
+ name (wild/full/verbatim matching), and on whether we're doing
+ a normal lookup or a completion match lookup.
+
+ This field may be NULL, in which case
+ default_symbol_name_matcher is used to perform the
+ matching. */
+ symbol_name_matcher_ftype *(*la_get_symbol_name_matcher)
+ (const lookup_name_info &);
+
+ /* Find all symbols in the current program space matching NAME in
+ DOMAIN, according to this language's rules.
+
+ The search is done in BLOCK only.
+ The caller is responsible for iterating up through superblocks
+ if desired.
+
+ For each one, call CALLBACK with the symbol. If CALLBACK
+ returns false, the iteration ends at that point.
+
+ This field may not be NULL. If the language does not need any
+ special processing here, 'iterate_over_symbols' should be
+ used as the definition. */
+ bool (*la_iterate_over_symbols)
+ (const struct block *block, const lookup_name_info &name,
+ domain_enum domain,
+ gdb::function_view<symbol_found_callback_ftype> callback);
+
+ /* Hash the given symbol search name. Use
+ default_search_name_hash if no special treatment is
+ required. */
+ unsigned int (*la_search_name_hash) (const char *name);
+
+ /* Various operations on varobj. */
+ const struct lang_varobj_ops *la_varobj_ops;
+
+ /* If this language allows compilation from the gdb command line,
+ this method should be non-NULL. When called it should return
+ an instance of struct gcc_context appropriate to the language.
+ When defined this method must never return NULL; instead it
+ should throw an exception on failure. The returned compiler
+ instance is owned by its caller and must be deallocated by
+ calling its 'destroy' method. */
+
+ compile_instance *(*la_get_compile_instance) (void);
+
+ /* This method must be defined if 'la_get_gcc_context' is defined.
+ If 'la_get_gcc_context' is not defined, then this method is
+ ignored.
+
+ This takes the user-supplied text and returns a new bit of code
+ to compile.
+
+ INST is the compiler instance being used.
+ INPUT is the user's input text.
+ GDBARCH is the architecture to use.
+ EXPR_BLOCK is the block in which the expression is being
+ parsed.
+ EXPR_PC is the PC at which the expression is being parsed. */
+
+ std::string (*la_compute_program) (compile_instance *inst,
+ const char *input,
+ struct gdbarch *gdbarch,
+ const struct block *expr_block,
+ CORE_ADDR expr_pc);
+
+ /* Return true if TYPE is a string type. */
+ bool (*la_is_string_type_p) (struct type *type);
+
+ /* This string is used by the 'set print max-depth' setting. When GDB
+ replaces a struct or union (during value printing) that is "too
+ deep" this string is displayed instead. */
+ const char *la_struct_too_deep_ellipsis;
};
-#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 const struct language_defn *expected_language;
+/* Warning issued when current_language and the language of the current
+ frame do not match. */
+
+extern const char lang_frame_mismatch_warn[];
+
/* language_mode ==
language_mode_auto: current_language automatically set upon selection
of scope (e.g. stack frame)
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);
+
+/* Look up type NAME in language L, and return its definition for architecture
+ GDBARCH. Returns NULL if not found. */
+
+struct type *language_lookup_primitive_type (const struct language_defn *l,
+ struct gdbarch *gdbarch,
+ const char *name);
+
+/* Wrapper around language_lookup_primitive_type to return the
+ corresponding symbol. */
+
+struct symbol *
+ language_lookup_primitive_type_as_symbol (const struct language_defn *l,
+ struct gdbarch *gdbarch,
+ const char *name);
+
\f
/* 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? */
+/* 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)
+/* "cast" really means conversion. */
+/* FIXME -- should be a setting in language_defn. */
+#define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c || \
+ (LANG)->la_language == language_cplus || \
+ (LANG)->la_language == language_objc)
extern void language_info (int);
/* 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))
+ with the "set language" command. */
+
+#define LA_PRINT_TYPE(type,varstring,stream,show,level,flags) \
+ (current_language->la_print_type(type,varstring,stream,show,level,flags))
+
+#define LA_PRINT_TYPEDEF(type,new_symbol,stream) \
+ (current_language->la_print_typedef(type,new_symbol,stream))
+
+#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, encoding, force_ellipses, options) \
+ (current_language->la_printstr(stream, elttype, string, length, \
+ encoding, force_ellipses,options))
+#define LA_EMIT_CHAR(ch, type, stream, quoter) \
+ (current_language->la_emitchar(ch, type, stream, quoter))
+
+#define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \
+ (current_language->la_print_array_index(index_value, stream, options))
+
+#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \
+ (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK))
/* 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. */
+ 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 pointer_type (struct type *);
-extern int numeric_type (struct type *);
+/* Return true if TYPE is a string type, otherwise return false. This
+ default implementation only detects TYPE_CODE_STRING. */
+extern bool default_is_string_type_p (struct type *type);
-extern int character_type (struct type *);
+/* Error messages */
-extern int boolean_type (struct type *);
+extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2);
-extern int float_type (struct type *);
+/* Data: Does this value represent "truth" to the current language? */
-extern int pointer_type (struct type *);
+extern int value_true (struct value *);
-extern int structured_type (struct type *);
+/* Misc: The string representing a particular enum language. */
-/* 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 enum language language_enum (const char *str);
-extern void binop_type_check (struct value *, struct value *, int);
+extern const struct language_defn *language_def (enum language);
-/* Error messages */
+extern const char *language_str (enum language);
-extern void op_error (const char *lhs, enum exp_opcode,
- const char *rhs);
+/* Check for a language-specific trampoline. */
-extern void type_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
+extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);
-extern void range_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
+/* Return demangled language symbol, or NULL. */
+extern char *language_demangle (const struct language_defn *current_language,
+ const char *mangled, int options);
-/* Data: Does this value represent "truth" to the current language? */
+/* A wrapper for la_sniff_from_mangled_name. The arguments and result
+ are as for the method. */
-extern int value_true (struct value *);
+extern int language_sniff_from_mangled_name (const struct language_defn *lang,
+ const char *mangled,
+ char **demangled);
-extern struct type *lang_bool_type (void);
+/* Return class name from physname, or NULL. */
+extern char *language_class_name_from_physname (const struct language_defn *,
+ const char *physname);
-/* The type used for Boolean values in the current language. */
-#define LA_BOOL_TYPE lang_bool_type ()
+/* Splitting strings into words. */
+extern const 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);
+
+/* Default name hashing function. */
+
+/* Produce an unsigned hash value from SEARCH_NAME that is consistent
+ with strcmp_iw, strcmp, and, at least on Ada symbols, wild_match.
+ That is, two identifiers equivalent according to any of those three
+ comparison operators hash to the same value. */
+extern unsigned int default_search_name_hash (const char *search_name);
+
+void c_get_string (struct value *value,
+ gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
+ int *length, struct type **char_type,
+ const char **charset);
+
+/* The default implementation of la_symbol_name_matcher. Matches with
+ strncmp_iw. */
+extern bool default_symbol_name_matcher
+ (const char *symbol_search_name,
+ const lookup_name_info &lookup_name,
+ completion_match_result *comp_match_res);
+
+/* Get LANG's symbol_name_matcher method for LOOKUP_NAME. Returns
+ default_symbol_name_matcher if not set. LANG is used as a hint;
+ the function may ignore it depending on the current language and
+ LOOKUP_NAME. Specifically, if the current language is Ada, this
+ may return an Ada matcher regardless of LANG. */
+symbol_name_matcher_ftype *get_symbol_name_matcher
+ (const language_defn *lang, const lookup_name_info &lookup_name);
+
+/* The languages supported by GDB. */
+
+extern const struct language_defn auto_language_defn;
+extern const struct language_defn unknown_language_defn;
+extern const struct language_defn minimal_language_defn;
+
+extern const struct language_defn ada_language_defn;
+extern const struct language_defn asm_language_defn;
+extern const struct language_defn c_language_defn;
+extern const struct language_defn cplus_language_defn;
+extern const struct language_defn d_language_defn;
+extern const struct language_defn f_language_defn;
+extern const struct language_defn go_language_defn;
+extern const struct language_defn m2_language_defn;
+extern const struct language_defn objc_language_defn;
+extern const struct language_defn opencl_language_defn;
+extern const struct language_defn pascal_language_defn;
+extern const struct language_defn rust_language_defn;
+
+/* Save the current language and restore it upon destruction. */
+
+class scoped_restore_current_language
+{
+public:
-/* Misc: The string representing a particular enum language. */
+ explicit scoped_restore_current_language ()
+ : m_lang (current_language->la_language)
+ {
+ }
-extern enum language language_enum (char *str);
+ ~scoped_restore_current_language ()
+ {
+ set_language (m_lang);
+ }
-extern const struct language_defn *language_def (enum language);
+ scoped_restore_current_language (const scoped_restore_current_language &)
+ = delete;
+ scoped_restore_current_language &operator=
+ (const scoped_restore_current_language &) = delete;
-extern char *language_str (enum language);
+private:
-/* Add a language to the set known by GDB (at initialization time). */
+ enum language m_lang;
+};
-extern void add_language (const struct language_defn *);
+/* If language_mode is language_mode_auto,
+ then switch current language to the language of SYM
+ and restore current language upon destruction.
-extern enum language get_frame_language (void); /* In stack.c */
+ Else do nothing. */
-/* Check for a language-specific trampoline. */
+class scoped_switch_to_sym_language_if_auto
+{
+public:
-extern CORE_ADDR skip_language_trampoline (CORE_ADDR pc);
+ explicit scoped_switch_to_sym_language_if_auto (const struct symbol *sym)
+ {
+ if (language_mode == language_mode_auto)
+ {
+ m_lang = current_language->la_language;
+ m_switched = true;
+ set_language (SYMBOL_LANGUAGE (sym));
+ }
+ else
+ {
+ m_switched = false;
+ /* Assign to m_lang to silence a GCC warning. See
+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635. */
+ m_lang = language_unknown;
+ }
+ }
-/* Return demangled language symbol, or NULL. */
-extern char *language_demangle (const struct language_defn *current_language,
- const char *mangled, int options);
+ ~scoped_switch_to_sym_language_if_auto ()
+ {
+ if (m_switched)
+ set_language (m_lang);
+ }
-/* Return class name from physname, or NULL. */
-extern char *language_class_name_from_physname (const struct language_defn *,
- const char *physname);
+ DISABLE_COPY_AND_ASSIGN (scoped_switch_to_sym_language_if_auto);
-/* Splitting strings into words. */
-extern char *default_word_break_characters (void);
+private:
+ bool m_switched;
+ enum language m_lang;
+};
#endif /* defined (LANGUAGE_H) */
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