/* Multiple source language support for GDB.
- Copyright (C) 1991-2018 Free Software Foundation, Inc.
+ Copyright (C) 1991-2020 Free Software Foundation, Inc.
Contributed by the Department of Computer Science at the State University
of New York at Buffalo.
#include "frame.h"
#include "c-lang.h"
#include <algorithm>
-
-static void unk_lang_error (const char *);
+#include "gdbarch.h"
static int unk_lang_parser (struct parser_state *);
static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc);
-/* Forward declaration */
-extern const struct language_defn unknown_language_defn;
-
/* The current (default at startup) state of type and range checking.
(If the modes are set to "auto", though, these are changed based
on the default language at startup, and then again based on the
/* The current language and language_mode (see language.h). */
-const struct language_defn *current_language = &unknown_language_defn;
+const struct language_defn *current_language = nullptr;
enum language_mode language_mode = language_mode_auto;
/* The language that the user expects to be typing in (the language
const struct language_defn *expected_language;
-/* The list of supported languages. Keep this in the same order as
- the 'enum language' values. */
-
-static const struct language_defn *languages[] = {
- &unknown_language_defn,
- &auto_language_defn,
- &c_language_defn,
- &objc_language_defn,
- &cplus_language_defn,
- &d_language_defn,
- &go_language_defn,
- &f_language_defn,
- &m2_language_defn,
- &asm_language_defn,
- &pascal_language_defn,
- &opencl_language_defn,
- &rust_language_defn,
- &minimal_language_defn,
- &ada_language_defn,
-};
+/* Define the array containing all languages. */
+
+const struct language_defn *language_defn::languages[nr_languages];
-/* The current values of the "set language/type/range" enum
+/* The current values of the "set language/range/case-sensitive" enum
commands. */
static const char *language;
-static const char *type;
static const char *range;
static const char *case_sensitive;
-/* Warning issued when current_language and the language of the current
- frame do not match. */
-char lang_frame_mismatch_warn[] =
-"Warning: the current language does not match this frame.";
+/* See language.h. */
+const char lang_frame_mismatch_warn[] =
+N_("Warning: the current language does not match this frame.");
\f
/* This page contains the functions corresponding to GDB commands
and their helpers. */
if (flang != language_unknown
&& language_mode == language_mode_manual
&& current_language->la_language != flang)
- printf_filtered ("%s\n", lang_frame_mismatch_warn);
+ printf_filtered ("%s\n", _(lang_frame_mismatch_warn));
}
}
language = "auto";
/* Search the list of languages for a match. */
- for (const auto &lang : languages)
+ for (const auto &lang : language_defn::languages)
{
if (strcmp (lang->la_name, language) == 0)
{
/* Enter auto mode. Set to the current frame's language, if
known, or fallback to the initial language. */
language_mode = language_mode_auto;
- TRY
+ try
{
struct frame_info *frame;
frame = get_selected_frame (NULL);
flang = get_frame_language (frame);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
flang = language_unknown;
}
- END_CATCH
if (flang != language_unknown)
set_language (flang);
enum language prev_language;
prev_language = current_language->la_language;
- current_language = languages[lang];
+ current_language = language_def (lang);
set_range_case ();
return prev_language;
}
int
pointer_type (struct type *type)
{
- return TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type);
+ return type->code () == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type);
}
\f
enum language
language_enum (const char *str)
{
- for (const auto &lang : languages)
+ for (const auto &lang : language_defn::languages)
if (strcmp (lang->la_name, str) == 0)
return lang->la_language;
const struct language_defn *
language_def (enum language lang)
{
- return languages[lang];
+ const struct language_defn *l = language_defn::languages[lang];
+ gdb_assert (l != nullptr);
+ return l;
}
/* Return the language as a string. */
const char *
language_str (enum language lang)
{
- return languages[lang]->la_name;
+ return language_def (lang)->la_name;
}
-static void
-set_check (const char *ignore, int from_tty)
-{
- printf_unfiltered (
- "\"set check\" must be followed by the name of a check subcommand.\n");
- help_list (setchecklist, "set check ", all_commands, gdb_stdout);
-}
-
-static void
-show_check (const char *ignore, int from_tty)
-{
- cmd_show_list (showchecklist, from_tty, "");
-}
\f
/* Build and install the "set language LANG" command. */
/* Build the language names array, to be used as enumeration in the
"set language" enum command. +1 for "local" and +1 for NULL
termination. */
- language_names = new const char *[ARRAY_SIZE (languages) + 2];
+ language_names = new const char *[ARRAY_SIZE (language_defn::languages) + 2];
/* Display "auto", "local" and "unknown" first, and then the rest,
alpha sorted. */
const char **language_names_p = language_names;
- *language_names_p++ = auto_language_defn.la_name;
+ *language_names_p++ = language_def (language_auto)->la_name;
*language_names_p++ = "local";
- *language_names_p++ = unknown_language_defn.la_name;
+ *language_names_p++ = language_def (language_unknown)->la_name;
const char **sort_begin = language_names_p;
- for (const auto &lang : languages)
+ for (const auto &lang : language_defn::languages)
{
/* Already handled above. */
if (lang->la_language == language_auto
std::sort (sort_begin, language_names_p, compare_cstrings);
/* Add the filename extensions. */
- for (const auto &lang : languages)
+ for (const auto &lang : language_defn::languages)
if (lang->la_filename_extensions != NULL)
{
for (size_t i = 0; lang->la_filename_extensions[i] != NULL; ++i)
doc.printf (_("Set the current source language.\n"
"The currently understood settings are:\n\nlocal or "
- "auto Automatic setting based on source file\n"));
+ "auto Automatic setting based on source file"));
- for (const auto &lang : languages)
+ for (const auto &lang : language_defn::languages)
{
/* Already dealt with these above. */
if (lang->la_language == language_unknown
/* FIXME: i18n: for now assume that the human-readable name is
just a capitalization of the internal name. */
- doc.printf ("%-16s Use the %c%s language\n",
+ /* Note that we add the newline at the front, so we don't wind
+ up with a trailing newline. */
+ doc.printf ("\n%-16s Use the %c%s language",
lang->la_name,
/* Capitalize first letter of language name. */
toupper (lang->la_name[0]),
CORE_ADDR
skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
{
- for (const auto &lang : languages)
+ for (const auto &lang : language_defn::languages)
{
if (lang->skip_trampoline != NULL)
{
return NULL;
}
-/* See langauge.h. */
+/* See language.h. */
int
language_sniff_from_mangled_name (const struct language_defn *lang,
return NULL;
}
-/* 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 current_language->la_pass_by_reference (type);
-}
+/* Return information about whether TYPE should be passed
+ (and returned) by reference at the language level. */
-/* 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)
+struct language_pass_by_ref_info
+language_pass_by_reference (struct type *type)
{
- return 0;
+ return current_language->pass_by_reference_info (type);
}
/* Return the default string containing the list of characters
return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
}
-/* Print the index of array elements using the C99 syntax. */
+/* See language.h. */
void
-default_print_array_index (struct value *index_value, struct ui_file *stream,
- const struct value_print_options *options)
+language_defn::print_array_index (struct type *index_type, LONGEST index,
+ struct ui_file *stream,
+ const value_print_options *options) const
{
+ struct value *index_value = value_from_longest (index_type, index);
+
fprintf_filtered (stream, "[");
LA_VALUE_PRINT (index_value, stream, options);
fprintf_filtered (stream, "] = ");
}
-void
-default_get_string (struct value *value, gdb_byte **buffer, int *length,
- struct type **char_type, const char **charset)
-{
- error (_("Getting a string is unsupported in this language."));
-}
-
/* See language.h. */
bool
const lookup_name_info &lookup_name,
completion_match_result *comp_match_res)
{
- const std::string &name = lookup_name.name ();
+ gdb::string_view name = lookup_name.name ();
completion_match_for_lcd *match_for_lcd
= (comp_match_res != NULL ? &comp_match_res->match_for_lcd : NULL);
strncmp_iw_mode mode = (lookup_name.completion_mode ()
? strncmp_iw_mode::NORMAL
: strncmp_iw_mode::MATCH_PARAMS);
- if (strncmp_iw_with_mode (symbol_search_name, name.c_str (), name.size (),
+ if (strncmp_iw_with_mode (symbol_search_name, name.data (), name.size (),
mode, language_minimal, match_for_lcd) == 0)
{
if (comp_match_res != NULL)
/* See language.h. */
+bool
+default_is_string_type_p (struct type *type)
+{
+ type = check_typedef (type);
+ while (type->code () == TYPE_CODE_REF)
+ {
+ type = TYPE_TARGET_TYPE (type);
+ type = check_typedef (type);
+ }
+ return (type->code () == TYPE_CODE_STRING);
+}
+
+/* See language.h. */
+
symbol_name_matcher_ftype *
-language_get_symbol_name_matcher (const language_defn *lang,
- const lookup_name_info &lookup_name)
+get_symbol_name_matcher (const language_defn *lang,
+ const lookup_name_info &lookup_name)
{
/* If currently in Ada mode, and the lookup name is wrapped in
'<...>', hijack all symbol name comparisons using the Ada
return 1;
}
-static void
-unk_lang_error (const char *msg)
-{
- error (_("Attempted to parse an expression with unknown language"));
-}
-
static void
unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
int quoter)
}
static void
-unk_lang_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)
+unk_lang_value_print_inner (struct value *val,
+ struct ui_file *stream, int recurse,
+ const struct value_print_options *options)
{
error (_("internal error - unimplemented "
- "function unk_lang_val_print called."));
+ "function unk_lang_value_print_inner called."));
}
static void
struct type *);
}
-const struct language_defn unknown_language_defn =
+/* Constant data that describes the unknown language. */
+
+extern const struct language_data unknown_language_data =
{
"unknown",
"Unknown",
NULL,
&exp_descriptor_standard,
unk_lang_parser,
- unk_lang_error,
null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
unk_lang_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
- unk_lang_val_print, /* Print a value using appropriate syntax */
+ unk_lang_value_print_inner, /* la_value_print_inner */
unk_lang_value_print, /* Print a top-level value */
- default_read_var_value, /* la_read_var_value */
unk_lang_trampoline, /* Language specific skip_trampoline */
"this", /* name_of_this */
+ true, /* store_sym_names_in_linkage_form_p */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
- basic_lookup_transparent_type,/* lookup_transparent_type */
unk_lang_demangle, /* Language specific symbol demangler */
NULL,
unk_lang_class_name, /* Language specific
0, /* String lower bound */
default_word_break_characters,
default_collect_symbol_completion_matches,
- unknown_language_arch_info, /* la_language_arch_info. */
- default_print_array_index,
- default_pass_by_reference,
- default_get_string,
c_watch_location_expression,
NULL, /* la_get_symbol_name_matcher */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
- LANG_MAGIC
+ default_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
-/* These two structs define fake entries for the "local" and "auto"
- options. */
-const struct language_defn auto_language_defn =
+/* Class representing the unknown language. */
+
+class unknown_language : public language_defn
+{
+public:
+ unknown_language ()
+ : language_defn (language_unknown, unknown_language_data)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+ void language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai) const override
+ {
+ unknown_language_arch_info (gdbarch, lai);
+ }
+};
+
+/* Single instance of the unknown language class. */
+
+static unknown_language unknown_language_defn;
+
+/* Constant data for the fake "auto" language. */
+
+extern const struct language_data auto_language_data =
{
"auto",
"Auto",
NULL,
&exp_descriptor_standard,
unk_lang_parser,
- unk_lang_error,
null_post_parser,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_emit_char,
unk_lang_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
- unk_lang_val_print, /* Print a value using appropriate syntax */
+ unk_lang_value_print_inner, /* la_value_print_inner */
unk_lang_value_print, /* Print a top-level value */
- default_read_var_value, /* la_read_var_value */
unk_lang_trampoline, /* Language specific skip_trampoline */
"this", /* name_of_this */
+ false, /* store_sym_names_in_linkage_form_p */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
- basic_lookup_transparent_type,/* lookup_transparent_type */
unk_lang_demangle, /* Language specific symbol demangler */
NULL,
unk_lang_class_name, /* Language specific
0, /* String lower bound */
default_word_break_characters,
default_collect_symbol_completion_matches,
- unknown_language_arch_info, /* la_language_arch_info. */
- default_print_array_index,
- default_pass_by_reference,
- default_get_string,
c_watch_location_expression,
NULL, /* la_get_symbol_name_matcher */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
- LANG_MAGIC
+ default_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
+};
+
+/* Class representing the fake "auto" language. */
+
+class auto_language : public language_defn
+{
+public:
+ auto_language ()
+ : language_defn (language_auto, auto_language_data)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+ void language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai) const override
+ {
+ unknown_language_arch_info (gdbarch, lai);
+ }
};
+/* Single instance of the fake "auto" language. */
+
+static auto_language auto_language_defn;
+
\f
/* Per-architecture language information. */
struct language_gdbarch *l;
l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
- for (const auto &lang : languages)
- if (lang != NULL && lang->la_language_arch_info != NULL)
- {
- lang->la_language_arch_info (gdbarch,
- l->arch_info + lang->la_language);
- }
+ for (const auto &lang : language_defn::languages)
+ {
+ gdb_assert (lang != nullptr);
+ lang->language_arch_info (gdbarch,
+ l->arch_info + lang->la_language);
+ }
return l;
}
{
struct type *type = SYMBOL_TYPE (sym);
- if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
+ if (type && type->code () == TYPE_CODE_BOOL)
return type;
}
}
for (p = lai->primitive_type_vector; (*p) != NULL; p++)
{
- if (strcmp (TYPE_NAME (*p), name) == 0)
+ if (strcmp ((*p)->name (), name) == 0)
return p;
}
return NULL;
gdb_assert (!TYPE_OBJFILE_OWNED (type));
gdbarch = TYPE_OWNER (type).gdbarch;
- symbol = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct symbol);
+ symbol = new (gdbarch_obstack (gdbarch)) struct symbol ();
- symbol->ginfo.name = TYPE_NAME (type);
- symbol->ginfo.language = lang;
+ symbol->m_name = type->name ();
+ symbol->set_language (lang, nullptr);
symbol->owner.arch = gdbarch;
SYMBOL_OBJFILE_OWNED (symbol) = 0;
+ SYMBOL_SECTION (symbol) = 0;
SYMBOL_TYPE (symbol) = type;
SYMBOL_DOMAIN (symbol) = VAR_DOMAIN;
SYMBOL_ACLASS_INDEX (symbol) = LOC_TYPEDEF;
/* Initialize the language routines. */
+void _initialize_language ();
void
-_initialize_language (void)
+_initialize_language ()
{
static const char *const type_or_range_names[]
= { "on", "off", "warn", "auto", NULL };
/* GDB commands for language specific stuff. */
- add_prefix_cmd ("check", no_class, set_check,
- _("Set the status of the type/range checker."),
- &setchecklist, "set check ", 0, &setlist);
+ add_basic_prefix_cmd ("check", no_class,
+ _("Set the status of the type/range checker."),
+ &setchecklist, "set check ", 0, &setlist);
add_alias_cmd ("c", "check", no_class, 1, &setlist);
add_alias_cmd ("ch", "check", no_class, 1, &setlist);
- add_prefix_cmd ("check", no_class, show_check,
- _("Show the status of the type/range checker."),
- &showchecklist, "show check ", 0, &showlist);
+ add_show_prefix_cmd ("check", no_class,
+ _("Show the status of the type/range checker."),
+ &showchecklist, "show check ", 0, &showlist);
add_alias_cmd ("c", "check", no_class, 1, &showlist);
add_alias_cmd ("ch", "check", no_class, 1, &showlist);
add_setshow_enum_cmd ("range", class_support, type_or_range_names,
&range,
- _("Set range checking. (on/warn/off/auto)"),
- _("Show range checking. (on/warn/off/auto)"),
+ _("Set range checking (on/warn/off/auto)."),
+ _("Show range checking (on/warn/off/auto)."),
NULL, set_range_command,
show_range_command,
&setchecklist, &showchecklist);
add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names,
&case_sensitive, _("\
-Set case sensitivity in name search. (on/off/auto)"), _("\
-Show case sensitivity in name search. (on/off/auto)"), _("\
+Set case sensitivity in name search (on/off/auto)."), _("\
+Show case sensitivity in name search (on/off/auto)."), _("\
For Fortran the default is off; for other languages the default is on."),
set_case_command,
show_case_command,
&setlist, &showlist);
+ /* In order to call SET_LANGUAGE (below) we need to make sure that
+ CURRENT_LANGUAGE is not NULL. So first set the language to unknown,
+ then we can change the language to 'auto'. */
+ current_language = language_def (language_unknown);
+
add_set_language_command ();
- language = xstrdup ("auto");
- type = xstrdup ("auto");
- range = xstrdup ("auto");
- case_sensitive = xstrdup ("auto");
+ language = "auto";
+ range = "auto";
+ case_sensitive = "auto";
/* Have the above take effect. */
set_language (language_auto);
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