/* Multiple source language support for GDB.
- Copyright (C) 1991-2015 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.
#include "varobj.h"
#include "target.h"
#include "parser-defs.h"
-#include "jv-lang.h"
#include "demangle.h"
#include "symfile.h"
#include "cp-support.h"
-
-extern void _initialize_language (void);
-
-static void unk_lang_error (char *);
+#include "frame.h"
+#include "c-lang.h"
+#include <algorithm>
static int unk_lang_parser (struct parser_state *);
-static void show_check (char *, int);
-
-static void set_check (char *, int);
-
static void set_range_case (void);
static void unk_lang_emit_char (int c, struct type *type,
const struct language_defn *expected_language;
-/* The list of supported languages. The list itself is malloc'd. */
-
-static const struct language_defn **languages;
-static unsigned languages_size;
-static unsigned languages_allocsize;
-#define DEFAULT_ALLOCSIZE 4
+/* 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,
+};
-/* 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;
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 : 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 = languages[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) == 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 : 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;
+ return languages[lang];
}
/* 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 languages[lang]->la_name;
}
static void
-set_check (char *ignore, int from_tty)
+set_check (const char *ignore, int from_tty)
{
printf_unfiltered (
"\"set check\" must be followed by the name of a check subcommand.\n");
}
static void
-show_check (char *ignore, int from_tty)
+show_check (const 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 (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++ = "local";
+ *language_names_p++ = unknown_language_defn.la_name;
+ const char **sort_begin = language_names_p;
+ for (const auto &lang : 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 : 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\n"));
- for (i = 0; i < languages_size; ++i)
+ for (const auto &lang : 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. */
+ doc.printf ("%-16s Use the %c%s language\n",
+ 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 : languages)
{
- if (languages[i]->skip_trampoline)
+ if (lang->skip_trampoline != NULL)
{
- 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;
return NULL;
}
+/* See langauge.h. */
+
+int
+language_sniff_from_mangled_name (const struct language_defn *lang,
+ const char *mangled, char **demangled)
+{
+ gdb_assert (lang != NULL);
+
+ if (lang->la_sniff_from_mangled_name == NULL)
+ {
+ *demangled = NULL;
+ return 0;
+ }
+
+ return lang->la_sniff_from_mangled_name (mangled, demangled);
+}
+
/* Return class name from physname or NULL. */
char *
language_class_name_from_physname (const struct language_defn *lang,
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!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
}
void
-default_get_string (struct value *value, gdb_byte **buffer, int *length,
- struct type **char_type, const char **charset)
+default_get_string (struct value *value,
+ gdb::unique_xmalloc_ptr<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
+default_symbol_name_matcher (const char *symbol_search_name,
+ const lookup_name_info &lookup_name,
+ completion_match_result *comp_match_res)
+{
+ const std::string &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 (),
+ 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;
+}
+
+/* See language.h. */
+
+bool
+default_is_string_type_p (struct type *type)
+{
+ type = check_typedef (type);
+ while (TYPE_CODE (type) == TYPE_CODE_REF)
+ {
+ type = TYPE_TARGET_TYPE (type);
+ type = check_typedef (type);
+ }
+ return (TYPE_CODE (type) == TYPE_CODE_STRING);
+}
+
+/* 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
return 1;
}
-static void
-unk_lang_error (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, const gdb_byte *valaddr,
+unk_lang_val_print (struct type *type,
int embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
- const struct value *val,
+ struct value *val,
const struct value_print_options *options)
{
error (_("internal error - unimplemented "
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,
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
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,
+ default_collect_symbol_completion_matches,
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 */
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
iterate_over_symbols,
+ default_search_name_hash,
&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"
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,
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_varobj_ops,
- NULL,
NULL,
- LANG_MAGIC
-};
-
-const struct language_defn local_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,
+ default_collect_symbol_completion_matches,
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 */
+ c_watch_location_expression,
+ NULL, /* la_get_symbol_name_matcher */
iterate_over_symbols,
+ default_search_name_hash,
&default_varobj_ops,
NULL,
NULL,
- LANG_MAGIC
+ default_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
+
\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++)
- {
- 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);
- }
+ 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);
+ }
+
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 gdbarch *gdbarch,
const char *name)
{
- struct language_gdbarch *ld = gdbarch_data (gdbarch,
- language_gdbarch_data);
+ 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],
struct gdbarch *gdbarch)
{
int n;
- struct compunit_symtab *cust;
- struct symtab *symtab;
- struct block *static_block, *global_block;
gdb_assert (lai->primitive_type_vector != NULL);
struct gdbarch *gdbarch,
const char *name)
{
- struct language_gdbarch *ld = gdbarch_data (gdbarch,
- language_gdbarch_data);
+ 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;
show_case_command,
&setlist, &showlist);
- add_language (&auto_language_defn);
- add_language (&local_language_defn);
- add_language (&unknown_language_defn);
+ 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);