/* Multiple source language support for GDB.
- Copyright (C) 1991-2013 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 "defs.h"
#include <ctype.h>
-#include "gdb_string.h"
-
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "varobj.h"
#include "target.h"
#include "parser-defs.h"
-#include "jv-lang.h"
#include "demangle.h"
#include "symfile.h"
#include "cp-support.h"
+#include "frame.h"
+#include "c-lang.h"
+#include <algorithm>
+#include "gdbarch.h"
-extern void _initialize_language (void);
-
-static void unk_lang_error (char *);
-
-static int unk_lang_parser (void);
-
-static void show_check (char *, int);
-
-static void set_check (char *, int);
+static int unk_lang_parser (struct parser_state *);
static void set_range_case (void);
static void unk_lang_value_print (struct value *, struct ui_file *,
const struct value_print_options *);
-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. The list itself is malloc'd. */
+/* Define the array containing all languages. */
-static const struct language_defn **languages;
-static unsigned languages_size;
-static unsigned languages_allocsize;
-#define DEFAULT_ALLOCSIZE 4
+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. */
show_language_command (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
- enum language flang; /* The language of the current frame. */
+ enum language flang; /* The language of the frame. */
if (language_mode == language_mode_auto)
fprintf_filtered (gdb_stdout,
_("The current source language is \"%s\".\n"),
current_language->la_name);
- flang = get_frame_language ();
- if (flang != language_unknown &&
- language_mode == language_mode_manual &&
- current_language->la_language != flang)
- printf_filtered ("%s\n", lang_frame_mismatch_warn);
+ if (has_stack_frames ())
+ {
+ struct frame_info *frame;
+
+ frame = get_selected_frame (NULL);
+ flang = get_frame_language (frame);
+ if (flang != language_unknown
+ && language_mode == language_mode_manual
+ && current_language->la_language != flang)
+ printf_filtered ("%s\n", _(lang_frame_mismatch_warn));
+ }
}
/* Set command. Change the current working language. */
static void
-set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_language_command (const char *ignore,
+ int from_tty, struct cmd_list_element *c)
{
- int i;
- enum language flang;
+ enum language flang = language_unknown;
+
+ /* "local" is a synonym of "auto". */
+ if (strcmp (language, "local") == 0)
+ language = "auto";
/* Search the list of languages for a match. */
- for (i = 0; i < languages_size; i++)
+ for (const auto &lang : language_defn::languages)
{
- if (strcmp (languages[i]->la_name, language) == 0)
+ if (strcmp (lang->la_name, language) == 0)
{
/* Found it! Go into manual mode, and use this language. */
- if (languages[i]->la_language == language_auto)
+ if (lang->la_language == language_auto)
{
/* Enter auto mode. Set to the current frame's language, if
known, or fallback to the initial language. */
language_mode = language_mode_auto;
- flang = get_frame_language ();
+ try
+ {
+ struct frame_info *frame;
+
+ frame = get_selected_frame (NULL);
+ flang = get_frame_language (frame);
+ }
+ catch (const gdb_exception_error &ex)
+ {
+ flang = language_unknown;
+ }
+
if (flang != language_unknown)
set_language (flang);
else
{
/* Enter manual mode. Set the specified language. */
language_mode = language_mode_manual;
- current_language = languages[i];
+ current_language = lang;
set_range_case ();
expected_language = current_language;
return;
{
if (range_mode == range_mode_auto)
{
- char *tmp;
+ const char *tmp;
switch (range_check)
{
/* Set command. Change the setting for range checking. */
static void
-set_range_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_range_command (const char *ignore,
+ int from_tty, struct cmd_list_element *c)
{
if (strcmp (range, "on") == 0)
{
{
if (case_mode == case_mode_auto)
{
- char *tmp = NULL;
+ const char *tmp = NULL;
switch (case_sensitivity)
{
/* Set command. Change the setting for case sensitivity. */
static void
-set_case_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_case_command (const char *ignore, int from_tty, struct cmd_list_element *c)
{
if (strcmp (case_sensitive, "on") == 0)
{
enum language
set_language (enum language lang)
{
- int i;
enum language prev_language;
prev_language = current_language->la_language;
-
- for (i = 0; i < languages_size; i++)
- {
- if (languages[i]->la_language == lang)
- {
- current_language = languages[i];
- set_range_case ();
- break;
- }
- }
-
+ current_language = language_def (lang);
+ set_range_case ();
return prev_language;
}
\f
int
pointer_type (struct type *type)
{
- return TYPE_CODE (type) == TYPE_CODE_PTR ||
- TYPE_CODE (type) == TYPE_CODE_REF;
+ return type->code () == TYPE_CODE_PTR || TYPE_IS_REFERENCE (type);
}
\f
/* Return the language enum for a given language string. */
enum language
-language_enum (char *str)
+language_enum (const char *str)
{
- int i;
+ for (const auto &lang : language_defn::languages)
+ if (strcmp (lang->la_name, str) == 0)
+ return lang->la_language;
- for (i = 0; i < languages_size; i++)
- if (strcmp (languages[i]->la_name, str) == 0)
- return languages[i]->la_language;
+ if (strcmp (str, "local") == 0)
+ return language_auto;
return language_unknown;
}
const struct language_defn *
language_def (enum language lang)
{
- int i;
-
- for (i = 0; i < languages_size; i++)
- {
- if (languages[i]->la_language == lang)
- {
- return languages[i];
- }
- }
- return NULL;
+ 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)
{
- int i;
-
- for (i = 0; i < languages_size; i++)
- {
- if (languages[i]->la_language == lang)
- {
- return languages[i]->la_name;
- }
- }
- return "Unknown";
+ return language_def (lang)->la_name;
}
-static void
-set_check (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 ", -1, gdb_stdout);
-}
-
-static void
-show_check (char *ignore, int from_tty)
-{
- cmd_show_list (showchecklist, from_tty, "");
-}
\f
-/* Add a language to the set of known languages. */
-void
-add_language (const struct language_defn *lang)
-{
- /* For the "set language" command. */
- static const char **language_names = NULL;
- /* For the "help set language" command. */
- char *language_set_doc = NULL;
-
- int i;
- struct ui_file *tmp_stream;
+/* Build and install the "set language LANG" command. */
- if (lang->la_magic != LANG_MAGIC)
- {
- fprintf_unfiltered (gdb_stderr,
- "Magic number of %s language struct wrong\n",
- lang->la_name);
- internal_error (__FILE__, __LINE__,
- _("failed internal consistency check"));
- }
+static void
+add_set_language_command ()
+{
+ static const char **language_names;
- if (!languages)
- {
- languages_allocsize = DEFAULT_ALLOCSIZE;
- languages = (const struct language_defn **) xmalloc
- (languages_allocsize * sizeof (*languages));
- }
- if (languages_size >= languages_allocsize)
+ /* 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 (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++ = language_def (language_auto)->la_name;
+ *language_names_p++ = "local";
+ *language_names_p++ = language_def (language_unknown)->la_name;
+ const char **sort_begin = language_names_p;
+ for (const auto &lang : language_defn::languages)
{
- languages_allocsize *= 2;
- languages = (const struct language_defn **) xrealloc ((char *) languages,
- languages_allocsize * sizeof (*languages));
+ /* Already handled above. */
+ if (lang->la_language == language_auto
+ || lang->la_language == language_unknown)
+ continue;
+ *language_names_p++ = lang->la_name;
}
- languages[languages_size++] = lang;
-
- /* Build the language names array, to be used as enumeration in the
- set language" enum command. */
- language_names = xrealloc (language_names,
- (languages_size + 1) * sizeof (const char *));
- for (i = 0; i < languages_size; ++i)
- language_names[i] = languages[i]->la_name;
- language_names[i] = NULL;
+ *language_names_p = NULL;
+ std::sort (sort_begin, language_names_p, compare_cstrings);
+
+ /* Add the filename extensions. */
+ 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)
+ add_filename_language (lang->la_filename_extensions[i],
+ lang->la_language);
+ }
/* Build the "help set language" docs. */
- tmp_stream = mem_fileopen ();
+ string_file doc;
- fprintf_unfiltered (tmp_stream,
- _("Set the current source language.\n"
- "The currently understood settings are:\n\nlocal or "
- "auto Automatic setting based on source file\n"));
+ doc.printf (_("Set the current source language.\n"
+ "The currently understood settings are:\n\nlocal or "
+ "auto Automatic setting based on source file"));
- for (i = 0; i < languages_size; ++i)
+ for (const auto &lang : language_defn::languages)
{
/* Already dealt with these above. */
- if (languages[i]->la_language == language_unknown
- || languages[i]->la_language == language_auto)
+ if (lang->la_language == language_unknown
+ || lang->la_language == language_auto)
continue;
- /* FIXME: i18n: for now assume that the human-readable name
- is just a capitalization of the internal name. */
- fprintf_unfiltered (tmp_stream, "%-16s Use the %c%s language\n",
- languages[i]->la_name,
- /* Capitalize first letter of language
- name. */
- toupper (languages[i]->la_name[0]),
- languages[i]->la_name + 1);
+ /* FIXME: i18n: for now assume that the human-readable name is
+ just a capitalization of the internal name. */
+ /* 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]),
+ lang->la_name + 1);
}
- language_set_doc = ui_file_xstrdup (tmp_stream, NULL);
- ui_file_delete (tmp_stream);
-
add_setshow_enum_cmd ("language", class_support,
- (const char **) language_names,
+ language_names,
&language,
- language_set_doc,
+ doc.c_str (),
_("Show the current source language."),
NULL, set_language_command,
show_language_command,
&setlist, &showlist);
-
- xfree (language_set_doc);
}
/* Iterate through all registered languages looking for and calling
CORE_ADDR
skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
{
- int i;
-
- for (i = 0; i < languages_size; i++)
+ for (const auto &lang : language_defn::languages)
{
- if (languages[i]->skip_trampoline)
- {
- CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc);
+ CORE_ADDR real_pc = lang->skip_trampoline (frame, pc);
- if (real_pc)
- return real_pc;
- }
+ if (real_pc != 0)
+ return real_pc;
}
return 0;
language_demangle (const struct language_defn *current_language,
const char *mangled, int options)
{
- if (current_language != NULL && current_language->la_demangle)
- return current_language->la_demangle (mangled, options);
+ if (current_language != NULL)
+ return current_language->demangle (mangled, options);
return NULL;
}
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
delimiting words. This is a reasonable default value that
most languages should be able to use. */
-char *
+const char *
default_word_break_characters (void)
{
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)
+/* See language.h. */
+
+bool
+default_symbol_name_matcher (const char *symbol_search_name,
+ const lookup_name_info &lookup_name,
+ completion_match_result *comp_match_res)
{
- error (_("Getting a string is unsupported in this language."));
+ 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.data (), name.size (),
+ mode, language_minimal, match_for_lcd) == 0)
+ {
+ if (comp_match_res != NULL)
+ comp_match_res->set_match (symbol_search_name);
+ return true;
+ }
+ else
+ return false;
}
-/* Define the language that is no language. */
+/* See language.h. */
-static int
-unk_lang_parser (void)
+bool
+default_is_string_type_p (struct type *type)
{
- return 1;
+ 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);
}
-static void
-unk_lang_error (char *msg)
+/* See language.h. */
+
+symbol_name_matcher_ftype *
+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
+ matcher, which handles the verbatim matching. */
+ if (current_language->la_language == language_ada
+ && lookup_name.ada ().verbatim_p ())
+ return current_language->la_get_symbol_name_matcher (lookup_name);
+
+ if (lang->la_get_symbol_name_matcher != nullptr)
+ return lang->la_get_symbol_name_matcher (lookup_name);
+ return default_symbol_name_matcher;
+}
+
+/* Define the language that is no language. */
+
+static int
+unk_lang_parser (struct parser_state *ps)
{
- error (_("Attempted to parse an expression with unknown language"));
+ return 1;
}
static void
}
static void
-unk_lang_print_type (struct type *type, const char *varstring,
- struct ui_file *stream, int show, int level,
- const struct type_print_options *flags)
+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_print_type called."));
-}
-
-static void
-unk_lang_val_print (struct type *type, const gdb_byte *valaddr,
- int embedded_offset, CORE_ADDR address,
- struct ui_file *stream, int recurse,
- const struct value *val,
- 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
"function unk_lang_value_print called."));
}
-static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc)
-{
- return 0;
-}
-
-/* Unknown languages just use the cplus demangler. */
-static char *unk_lang_demangle (const char *mangled, int options)
-{
- return gdb_demangle (mangled, options);
-}
-
static char *unk_lang_class_name (const char *mangled)
{
return NULL;
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",
case_sensitive_on,
array_row_major,
macro_expansion_no,
+ 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 */
unk_lang_class_name, /* Language specific
class_name_from_physname */
unk_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
default_word_break_characters,
- default_make_symbol_completion_list,
- unknown_language_arch_info, /* la_language_arch_info. */
- default_print_array_index,
- default_pass_by_reference,
- default_get_string,
- NULL, /* la_get_symbol_name_cmp */
- iterate_over_symbols,
+ default_collect_symbol_completion_matches,
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
&default_varobj_ops,
- LANG_MAGIC
+ NULL,
+ 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);
+ }
+
+ /* See language.h. */
+
+ void print_type (struct type *type, const char *varstring,
+ struct ui_file *stream, int show, int level,
+ const struct type_print_options *flags) const override
+ {
+ error (_("unimplemented unknown_language::print_type called"));
+ }
+
+ /* See language.h. */
+
+ char *demangle (const char *mangled, int options) const override
+ {
+ /* The unknown language just uses the C++ demangler. */
+ return gdb_demangle (mangled, options);
+ }
+};
+
+/* 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",
case_sensitive_on,
array_row_major,
macro_expansion_no,
+ 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 */
unk_lang_class_name, /* Language specific
class_name_from_physname */
unk_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
default_word_break_characters,
- default_make_symbol_completion_list,
- unknown_language_arch_info, /* la_language_arch_info. */
- default_print_array_index,
- default_pass_by_reference,
- default_get_string,
- NULL, /* la_get_symbol_name_cmp */
- iterate_over_symbols,
+ default_collect_symbol_completion_matches,
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
&default_varobj_ops,
- LANG_MAGIC
+ NULL,
+ default_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
-const struct language_defn local_language_defn =
+/* Class representing the fake "auto" language. */
+
+class auto_language : public language_defn
{
- "local",
- "Local",
- language_auto,
- range_check_off,
- case_sensitive_on,
- array_row_major,
- macro_expansion_no,
- &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, /* Print a top-level value */
- default_read_var_value, /* la_read_var_value */
- unk_lang_trampoline, /* Language specific skip_trampoline */
- "this", /* name_of_this */
- basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
- basic_lookup_transparent_type,/* lookup_transparent_type */
- unk_lang_demangle, /* Language specific symbol demangler */
- unk_lang_class_name, /* Language specific
- class_name_from_physname */
- unk_op_print_tab, /* expression operators for printing */
- 1, /* c-style arrays */
- 0, /* String lower bound */
- default_word_break_characters,
- default_make_symbol_completion_list,
- unknown_language_arch_info, /* la_language_arch_info. */
- default_print_array_index,
- default_pass_by_reference,
- default_get_string,
- NULL, /* la_get_symbol_name_cmp */
- iterate_over_symbols,
- &default_varobj_ops,
- LANG_MAGIC
+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);
+ }
+
+ /* See language.h. */
+
+ void print_type (struct type *type, const char *varstring,
+ struct ui_file *stream, int show, int level,
+ const struct type_print_options *flags) const override
+ {
+ error (_("unimplemented auto_language::print_type called"));
+ }
+
+ /* See language.h. */
+
+ char *demangle (const char *mangled, int options) const override
+ {
+ /* The auto language just uses the C++ demangler. */
+ return gdb_demangle (mangled, options);
+ }
};
+
+/* Single instance of the fake "auto" language. */
+
+static auto_language auto_language_defn;
+
\f
/* Per-architecture language information. */
language_gdbarch_post_init (struct gdbarch *gdbarch)
{
struct language_gdbarch *l;
- int i;
l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
- for (i = 0; i < languages_size; i++)
+ for (const auto &lang : language_defn::languages)
{
- if (languages[i] != NULL
- && languages[i]->la_language_arch_info != NULL)
- languages[i]->la_language_arch_info
- (gdbarch, l->arch_info + languages[i]->la_language);
+ gdb_assert (lang != nullptr);
+ lang->language_arch_info (gdbarch,
+ l->arch_info + lang->la_language);
}
+
return l;
}
language_string_char_type (const struct language_defn *la,
struct gdbarch *gdbarch)
{
- struct language_gdbarch *ld = gdbarch_data (gdbarch,
- language_gdbarch_data);
+ struct language_gdbarch *ld
+ = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
return ld->arch_info[la->la_language].string_char_type;
}
language_bool_type (const struct language_defn *la,
struct gdbarch *gdbarch)
{
- struct language_gdbarch *ld = gdbarch_data (gdbarch,
- language_gdbarch_data);
+ struct language_gdbarch *ld
+ = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
if (ld->arch_info[la->la_language].bool_type_symbol)
{
struct symbol *sym;
sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol,
- NULL, VAR_DOMAIN, NULL);
+ NULL, VAR_DOMAIN, NULL).symbol;
if (sym)
{
struct type *type = SYMBOL_TYPE (sym);
- if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
+ if (type && type->code () == TYPE_CODE_BOOL)
return type;
}
}
return ld->arch_info[la->la_language].bool_type_default;
}
+/* Helper function for primitive type lookup. */
+
+static struct type **
+language_lookup_primitive_type_1 (const struct language_arch_info *lai,
+ const char *name)
+{
+ struct type **p;
+
+ for (p = lai->primitive_type_vector; (*p) != NULL; p++)
+ {
+ if (strcmp ((*p)->name (), name) == 0)
+ return p;
+ }
+ return NULL;
+}
+
+/* See language.h. */
+
struct type *
-language_lookup_primitive_type_by_name (const struct language_defn *la,
- struct gdbarch *gdbarch,
- const char *name)
+language_lookup_primitive_type (const struct language_defn *la,
+ struct gdbarch *gdbarch,
+ const char *name)
+{
+ struct language_gdbarch *ld =
+ (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+ struct type **typep;
+
+ typep = language_lookup_primitive_type_1 (&ld->arch_info[la->la_language],
+ name);
+ if (typep == NULL)
+ return NULL;
+ return *typep;
+}
+
+/* Helper function for type lookup as a symbol.
+ Create the symbol corresponding to type TYPE in language LANG. */
+
+static struct symbol *
+language_alloc_type_symbol (enum language lang, struct type *type)
{
- struct language_gdbarch *ld = gdbarch_data (gdbarch,
- language_gdbarch_data);
- struct type *const *p;
+ struct symbol *symbol;
+ struct gdbarch *gdbarch;
+
+ gdb_assert (!TYPE_OBJFILE_OWNED (type));
+
+ gdbarch = TYPE_OWNER (type).gdbarch;
+ symbol = new (gdbarch_obstack (gdbarch)) struct symbol ();
+
+ 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;
+
+ return symbol;
+}
+
+/* Initialize the primitive type symbols of language LD.
+ The primitive type vector must have already been initialized. */
- for (p = ld->arch_info[la->la_language].primitive_type_vector;
- (*p) != NULL;
- p++)
+static void
+language_init_primitive_type_symbols (struct language_arch_info *lai,
+ const struct language_defn *la,
+ struct gdbarch *gdbarch)
+{
+ int n;
+
+ gdb_assert (lai->primitive_type_vector != NULL);
+
+ for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
+ continue;
+
+ lai->primitive_type_symbols
+ = GDBARCH_OBSTACK_CALLOC (gdbarch, n + 1, struct symbol *);
+
+ for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
{
- if (strcmp (TYPE_NAME (*p), name) == 0)
- return (*p);
+ lai->primitive_type_symbols[n]
+ = language_alloc_type_symbol (la->la_language,
+ lai->primitive_type_vector[n]);
}
- return (NULL);
+
+ /* Note: The result of symbol lookup is normally a symbol *and* the block
+ it was found in. Builtin types don't live in blocks. We *could* give
+ them one, but there is no current need so to keep things simple symbol
+ lookup is extended to allow for BLOCK_FOUND to be NULL. */
+}
+
+/* See language.h. */
+
+struct symbol *
+language_lookup_primitive_type_as_symbol (const struct language_defn *la,
+ struct gdbarch *gdbarch,
+ const char *name)
+{
+ struct language_gdbarch *ld
+ = (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+ struct language_arch_info *lai = &ld->arch_info[la->la_language];
+ struct type **typep;
+ struct symbol *sym;
+
+ if (symbol_lookup_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "language_lookup_primitive_type_as_symbol"
+ " (%s, %s, %s)",
+ la->la_name, host_address_to_string (gdbarch), name);
+ }
+
+ typep = language_lookup_primitive_type_1 (lai, name);
+ if (typep == NULL)
+ {
+ if (symbol_lookup_debug)
+ fprintf_unfiltered (gdb_stdlog, " = NULL\n");
+ return NULL;
+ }
+
+ /* The set of symbols is lazily initialized. */
+ if (lai->primitive_type_symbols == NULL)
+ language_init_primitive_type_symbols (lai, la, gdbarch);
+
+ sym = lai->primitive_type_symbols[typep - lai->primitive_type_vector];
+
+ if (symbol_lookup_debug)
+ fprintf_unfiltered (gdb_stdlog, " = %s\n", host_address_to_string (sym));
+ return sym;
}
/* 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);
- add_language (&auto_language_defn);
- add_language (&local_language_defn);
- add_language (&unknown_language_defn);
+ /* 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);
projects / deliverable / binutils-gdb.git / blobdiff