/* Multiple source language support for GDB.
- Copyright (C) 1991-2018 Free Software Foundation, Inc.
+ Copyright (C) 1991-2021 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 int unk_lang_parser (struct parser_state *);
+#include "gdbarch.h"
+#include "compile/compile-internal.h"
static void set_range_case (void);
-static void unk_lang_emit_char (int c, struct type *type,
- struct ui_file *stream, int quoter);
-
-static void unk_lang_printchar (int c, struct type *type,
- struct ui_file *stream);
+/* range_mode ==
+ range_mode_auto: range_check set automatically to default of language.
+ range_mode_manual: range_check set manually by user. */
-static void unk_lang_value_print (struct value *, struct ui_file *,
- const struct value_print_options *);
+enum range_mode
+ {
+ range_mode_auto, range_mode_manual
+ };
-static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc);
+/* case_mode ==
+ case_mode_auto: case_sensitivity set upon selection of scope.
+ case_mode_manual: case_sensitivity set only by user. */
-/* Forward declaration */
-extern const struct language_defn unknown_language_defn;
+enum case_mode
+ {
+ case_mode_auto, case_mode_manual
+ };
/* 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
language of the first source file. */
-enum range_mode range_mode = range_mode_auto;
+static enum range_mode range_mode = range_mode_auto;
enum range_check range_check = range_check_off;
-enum case_mode case_mode = case_mode_auto;
+static enum case_mode case_mode = case_mode_auto;
enum case_sensitivity case_sensitivity = case_sensitive_on;
/* 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. */
fprintf_filtered (gdb_stdout,
_("The current source language is "
"\"auto; currently %s\".\n"),
- current_language->la_name);
+ current_language->name ());
else
fprintf_filtered (gdb_stdout,
_("The current source language is \"%s\".\n"),
- current_language->la_name);
+ current_language->name ());
if (has_stack_frames ())
{
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)
+ if (strcmp (lang->name (), language) == 0)
{
/* Found it! Go into manual mode, and use this language. */
if (lang->la_language == language_auto)
{
/* Enter auto mode. Set to the current frame's language, if
- known, or fallback to the initial language. */
+ 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);
fprintf_filtered (gdb_stdout, _("Range checking is \"%s\".\n"),
value);
- if (range_check != current_language->la_range_check)
+ if (range_check == range_check_warn
+ || ((range_check == range_check_on)
+ != current_language->range_checking_on_by_default ()))
warning (_("the current range check setting "
"does not match the language.\n"));
}
internal_error (__FILE__, __LINE__,
_("Unrecognized range check setting: \"%s\""), range);
}
- if (range_check != current_language->la_range_check)
+ if (range_check == range_check_warn
+ || ((range_check == range_check_on)
+ != current_language->range_checking_on_by_default ()))
warning (_("the current range check setting "
"does not match the language.\n"));
}
_("Case sensitivity in name search is \"%s\".\n"),
value);
- if (case_sensitivity != current_language->la_case_sensitivity)
+ if (case_sensitivity != current_language->case_sensitivity ())
warning (_("the current case sensitivity setting does not match "
"the language.\n"));
}
case_sensitive);
}
- if (case_sensitivity != current_language->la_case_sensitivity)
+ if (case_sensitivity != current_language->case_sensitivity ())
warning (_("the current case sensitivity setting does not match "
"the language.\n"));
}
set_range_case (void)
{
if (range_mode == range_mode_auto)
- range_check = current_language->la_range_check;
+ range_check = (current_language->range_checking_on_by_default ()
+ ? range_check_on : range_check_off);
if (case_mode == case_mode_auto)
- case_sensitivity = current_language->la_case_sensitivity;
+ case_sensitivity = current_language->case_sensitivity ();
}
/* Set current language to (enum language) LANG. Returns previous
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
break;
case range_check_off:
/* FIXME: cagney/2002-01-30: Should this function print anything
- when range error is off? */
+ when range error is off? */
vfprintf_filtered (gdb_stderr, string, args);
fprintf_filtered (gdb_stderr, "\n");
break;
enum language
language_enum (const char *str)
{
- for (const auto &lang : languages)
- if (strcmp (lang->la_name, str) == 0)
+ for (const auto &lang : language_defn::languages)
+ if (strcmp (lang->name (), str) == 0)
return lang->la_language;
if (strcmp (str, "local") == 0)
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;
-}
-
-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);
+ return language_def (lang)->name ();
}
-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)->name ();
*language_names_p++ = "local";
- *language_names_p++ = unknown_language_defn.la_name;
+ *language_names_p++ = language_def (language_unknown)->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
|| lang->la_language == language_unknown)
continue;
- *language_names_p++ = lang->la_name;
+ *language_names_p++ = lang->name ();
}
*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);
- }
+ for (const auto &lang : language_defn::languages)
+ for (const char * const &ext : lang->filename_extensions ())
+ add_filename_language (ext, lang->la_language);
/* Build the "help set language" docs. */
string_file doc;
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
|| lang->la_language == language_auto)
continue;
- /* 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);
+ /* 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 %s language",
+ lang->name (),
+ lang->natural_name ());
}
add_setshow_enum_cmd ("language", class_support,
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)
- {
- CORE_ADDR real_pc = lang->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_symbol (mangled, options);
return NULL;
}
-/* See langauge.h. */
+/* Return information about whether TYPE should be passed
+ (and returned) by reference at the language level. */
-int
-language_sniff_from_mangled_name (const struct language_defn *lang,
- const char *mangled, char **demangled)
+struct language_pass_by_ref_info
+language_pass_by_reference (struct type *type)
{
- gdb_assert (lang != NULL);
+ return current_language->pass_by_reference_info (type);
+}
- if (lang->la_sniff_from_mangled_name == NULL)
- {
- *demangled = NULL;
- return 0;
- }
+/* 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. */
- return lang->la_sniff_from_mangled_name (mangled, demangled);
+const char *
+default_word_break_characters (void)
+{
+ return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
}
-/* Return class name from physname or NULL. */
-char *
-language_class_name_from_physname (const struct language_defn *lang,
- const char *physname)
+/* See language.h. */
+
+void
+language_defn::print_array_index (struct type *index_type, LONGEST index,
+ struct ui_file *stream,
+ const value_print_options *options) const
{
- if (lang != NULL && lang->la_class_name_from_physname)
- return lang->la_class_name_from_physname (physname);
- return NULL;
+ struct value *index_value = value_from_longest (index_type, index);
+
+ fprintf_filtered (stream, "[");
+ value_print (index_value, stream, options);
+ fprintf_filtered (stream, "] = ");
}
-/* Return non-zero if TYPE should be passed (and returned) by
- reference at the language level. */
-int
-language_pass_by_reference (struct type *type)
+/* See language.h. */
+
+gdb::unique_xmalloc_ptr<char>
+language_defn::watch_location_expression (struct type *type,
+ CORE_ADDR addr) const
{
- return current_language->la_pass_by_reference (type);
+ /* Generates an expression that assumes a C like syntax is valid. */
+ type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type)));
+ std::string name = type_to_string (type);
+ return gdb::unique_xmalloc_ptr<char>
+ (xstrprintf ("* (%s *) %s", name.c_str (), core_addr_to_string (addr)));
}
-/* 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. */
+/* See language.h. */
+
+void
+language_defn::value_print (struct value *val, struct ui_file *stream,
+ const struct value_print_options *options) const
+{
+ return c_value_print (val, stream, options);
+}
+
+/* See language.h. */
+
int
-default_pass_by_reference (struct type *type)
+language_defn::parser (struct parser_state *ps) const
{
- return 0;
+ return c_parse (ps);
}
-/* 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. */
+/* See language.h. */
-const char *
-default_word_break_characters (void)
+void
+language_defn::value_print_inner
+ (struct value *val, struct ui_file *stream, int recurse,
+ const struct value_print_options *options) const
{
- return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
+ return c_value_print_inner (val, stream, recurse, options);
}
-/* 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::emitchar (int ch, struct type *chtype,
+ struct ui_file * stream, int quoter) const
{
- fprintf_filtered (stream, "[");
- LA_VALUE_PRINT (index_value, stream, options);
- fprintf_filtered (stream, "] = ");
+ c_emit_char (ch, chtype, stream, quoter);
+}
+
+/* See language.h. */
+
+void
+language_defn::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 *options) const
+{
+ c_printstr (stream, elttype, string, length, encoding, force_ellipses,
+ options);
}
+/* See language.h. */
+
void
-default_get_string (struct value *value, gdb_byte **buffer, int *length,
- struct type **char_type, const char **charset)
+language_defn::print_typedef (struct type *type, struct symbol *new_symbol,
+ struct ui_file *stream) const
{
- error (_("Getting a string is unsupported in this language."));
+ c_print_typedef (type, new_symbol, stream);
}
/* See language.h. */
bool
+language_defn::is_string_type_p (struct type *type) const
+{
+ return c_is_string_type_p (type);
+}
+
+/* See language.h. */
+
+std::unique_ptr<compile_instance>
+language_defn::get_compile_instance () const
+{
+ return {};
+}
+
+/* The default implementation of the get_symbol_name_matcher_inner method
+ from the language_defn class. Matches with strncmp_iw. */
+
+static 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 ();
+ 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. */
symbol_name_matcher_ftype *
-get_symbol_name_matcher (const language_defn *lang,
- const lookup_name_info &lookup_name)
+language_defn::get_symbol_name_matcher
+ (const lookup_name_info &lookup_name) const
{
/* 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);
+ return current_language->get_symbol_name_matcher_inner (lookup_name);
- if (lang->la_get_symbol_name_matcher != nullptr)
- return lang->la_get_symbol_name_matcher (lookup_name);
- return default_symbol_name_matcher;
+ return this->get_symbol_name_matcher_inner (lookup_name);
}
-/* Define the language that is no language. */
+/* See language.h. */
-static int
-unk_lang_parser (struct parser_state *ps)
+symbol_name_matcher_ftype *
+language_defn::get_symbol_name_matcher_inner
+ (const lookup_name_info &lookup_name) const
{
- return 1;
+ return default_symbol_name_matcher;
}
-static void
-unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
- int quoter)
-{
- error (_("internal error - unimplemented "
- "function unk_lang_emit_char called."));
-}
+/* See language.h. */
-static void
-unk_lang_printchar (int c, struct type *type, struct ui_file *stream)
+const struct lang_varobj_ops *
+language_defn::varobj_ops () const
{
- error (_("internal error - unimplemented "
- "function unk_lang_printchar called."));
+ /* The ops for the C language are suitable for the vast majority of the
+ supported languages. */
+ return &c_varobj_ops;
}
-static void
-unk_lang_printstr (struct ui_file *stream, struct type *type,
- const gdb_byte *string, unsigned int length,
- const char *encoding, int force_ellipses,
- const struct value_print_options *options)
-{
- error (_("internal error - unimplemented "
- "function unk_lang_printstr called."));
-}
+/* See language.h. */
-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)
+const struct exp_descriptor *
+language_defn::expression_ops () const
{
- error (_("internal error - unimplemented "
- "function unk_lang_print_type called."));
+ return &exp_descriptor_standard;
}
-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)
-{
- error (_("internal error - unimplemented "
- "function unk_lang_val_print called."));
-}
+/* Parent class for both the "auto" and "unknown" languages. These two
+ pseudo-languages are very similar so merging their implementations like
+ this makes sense. */
-static void
-unk_lang_value_print (struct value *val, struct ui_file *stream,
- const struct value_print_options *options)
+class auto_or_unknown_language : public language_defn
{
- error (_("internal error - unimplemented "
- "function unk_lang_value_print called."));
-}
+public:
+ auto_or_unknown_language (enum language lang)
+ : language_defn (lang)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+ void language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai) const override
+ {
+ lai->set_string_char_type (builtin_type (gdbarch)->builtin_char);
+ lai->set_bool_type (builtin_type (gdbarch)->builtin_int);
+ }
+
+ /* 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 (_("type printing not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ char *demangle_symbol (const char *mangled, int options) const override
+ {
+ /* The auto language just uses the C++ demangler. */
+ return gdb_demangle (mangled, options);
+ }
+
+ /* See language.h. */
+
+ void value_print (struct value *val, struct ui_file *stream,
+ const struct value_print_options *options) const override
+ {
+ error (_("value printing not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ void value_print_inner
+ (struct value *val, struct ui_file *stream, int recurse,
+ const struct value_print_options *options) const override
+ {
+ error (_("inner value printing not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ int parser (struct parser_state *ps) const override
+ {
+ /* No parsing is done, just claim success. */
+ return 1;
+ }
+
+ /* See language.h. */
+
+ void emitchar (int ch, struct type *chtype,
+ struct ui_file *stream, int quoter) const override
+ {
+ error (_("emit character not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ void printchar (int ch, struct type *chtype,
+ struct ui_file *stream) const override
+ {
+ error (_("print character not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ void 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 *options) const override
+ {
+ error (_("print string not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ void print_typedef (struct type *type, struct symbol *new_symbol,
+ struct ui_file *stream) const override
+ {
+ error (_("print typedef not implemented for language \"%s\""),
+ natural_name ());
+ }
+
+ /* See language.h. */
+
+ bool is_string_type_p (struct type *type) const override
+ {
+ 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 CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc)
-{
- return 0;
-}
+ /* See language.h. */
-/* Unknown languages just use the cplus demangler. */
-static char *unk_lang_demangle (const char *mangled, int options)
-{
- return gdb_demangle (mangled, options);
-}
+ const char *name_of_this () const override
+ { return "this"; }
-static char *unk_lang_class_name (const char *mangled)
-{
- return NULL;
-}
+ /* See language.h. */
-static const struct op_print unk_op_print_tab[] =
-{
- {NULL, OP_NULL, PREC_NULL, 0}
+ const struct op_print *opcode_print_table () const override
+ {
+ static const struct op_print unk_op_print_tab[] =
+ {
+ {NULL, OP_NULL, PREC_NULL, 0}
+ };
+
+ return unk_op_print_tab;
+ }
};
-static void
-unknown_language_arch_info (struct gdbarch *gdbarch,
- struct language_arch_info *lai)
-{
- lai->string_char_type = builtin_type (gdbarch)->builtin_char;
- lai->bool_type_default = builtin_type (gdbarch)->builtin_int;
- lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
- struct type *);
-}
+/* Class representing the fake "auto" language. */
-const struct language_defn unknown_language_defn =
+class auto_language : public auto_or_unknown_language
{
- "unknown",
- "Unknown",
- language_unknown,
- range_check_off,
- case_sensitive_on,
- array_row_major,
- macro_expansion_no,
- NULL,
- &exp_descriptor_standard,
- unk_lang_parser,
- 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 */
- 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_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_search_name_hash,
- &default_varobj_ops,
- NULL,
- NULL,
- LANG_MAGIC
+public:
+ auto_language ()
+ : auto_or_unknown_language (language_auto)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+
+ const char *name () const override
+ { return "auto"; }
+
+ /* See language.h. */
+
+ const char *natural_name () const override
+ { return "Auto"; }
};
-/* These two structs define fake entries for the "local" and "auto"
- options. */
-const struct language_defn auto_language_defn =
+/* Single instance of the fake "auto" language. */
+
+static auto_language auto_language_defn;
+
+/* Class representing the unknown language. */
+
+class unknown_language : public auto_or_unknown_language
{
- "auto",
- "Auto",
- language_auto,
- range_check_off,
- case_sensitive_on,
- array_row_major,
- macro_expansion_no,
- NULL,
- &exp_descriptor_standard,
- unk_lang_parser,
- 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 */
- 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
- 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_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_search_name_hash,
- &default_varobj_ops,
- NULL,
- NULL,
- LANG_MAGIC
+public:
+ unknown_language ()
+ : auto_or_unknown_language (language_unknown)
+ { /* Nothing. */ }
+
+ /* See language.h. */
+
+ const char *name () const override
+ { return "unknown"; }
+
+ /* See language.h. */
+
+ const char *natural_name () const override
+ { return "Unknown"; }
+
+ /* See language.h. */
+
+ bool store_sym_names_in_linkage_form_p () const override
+ { return true; }
};
+/* Single instance of the unknown language class. */
+
+static unknown_language unknown_language_defn;
+
\f
/* Per-architecture language information. */
static void *
language_gdbarch_post_init (struct gdbarch *gdbarch)
{
- 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);
- }
+ struct language_gdbarch *l
+ = obstack_new<struct language_gdbarch> (gdbarch_obstack (gdbarch));
+ for (const auto &lang : language_defn::languages)
+ {
+ gdb_assert (lang != nullptr);
+ lang->language_arch_info (gdbarch, &l->arch_info[lang->la_language]);
+ }
return l;
}
+/* See language.h. */
+
struct type *
language_string_char_type (const struct language_defn *la,
struct gdbarch *gdbarch)
{
struct language_gdbarch *ld
= (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
-
- return ld->arch_info[la->la_language].string_char_type;
+ return ld->arch_info[la->la_language].string_char_type ();
}
+/* See language.h. */
+
struct type *
language_bool_type (const struct language_defn *la,
struct gdbarch *gdbarch)
{
struct language_gdbarch *ld
= (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+ return ld->arch_info[la->la_language].bool_type ();
+}
+
+/* See language.h. */
- if (ld->arch_info[la->la_language].bool_type_symbol)
+struct type *
+language_arch_info::bool_type () const
+{
+ if (m_bool_type_name != nullptr)
{
struct symbol *sym;
- sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol,
- NULL, VAR_DOMAIN, NULL).symbol;
- if (sym)
+ sym = lookup_symbol (m_bool_type_name, NULL, VAR_DOMAIN, NULL).symbol;
+ if (sym != nullptr)
{
struct type *type = SYMBOL_TYPE (sym);
-
- if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
+ if (type != nullptr && type->code () == TYPE_CODE_BOOL)
return type;
}
}
- return ld->arch_info[la->la_language].bool_type_default;
+ return m_bool_type_default;
}
-/* Helper function for primitive type lookup. */
+/* See language.h. */
-static struct type **
-language_lookup_primitive_type_1 (const struct language_arch_info *lai,
- const char *name)
+struct symbol *
+language_arch_info::type_and_symbol::alloc_type_symbol
+ (enum language lang, struct type *type)
{
- struct type **p;
+ struct symbol *symbol;
+ struct gdbarch *gdbarch;
+ gdb_assert (!type->is_objfile_owned ());
+ gdbarch = type->arch_owner ();
+ 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;
+}
- for (p = lai->primitive_type_vector; (*p) != NULL; p++)
+/* See language.h. */
+
+language_arch_info::type_and_symbol *
+language_arch_info::lookup_primitive_type_and_symbol (const char *name)
+{
+ for (struct type_and_symbol &tas : primitive_types_and_symbols)
{
- if (strcmp (TYPE_NAME (*p), name) == 0)
- return p;
+ if (strcmp (tas.type ()->name (), name) == 0)
+ return &tas;
}
- return NULL;
+
+ return nullptr;
}
/* See language.h. */
struct type *
-language_lookup_primitive_type (const struct language_defn *la,
- struct gdbarch *gdbarch,
- const char *name)
+language_arch_info::lookup_primitive_type (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;
+ type_and_symbol *tas = lookup_primitive_type_and_symbol (name);
+ if (tas != nullptr)
+ return tas->type ();
+ return nullptr;
}
-/* Helper function for type lookup as a symbol.
- Create the symbol corresponding to type TYPE in language LANG. */
+/* See language.h. */
-static struct symbol *
-language_alloc_type_symbol (enum language lang, struct type *type)
+struct type *
+language_arch_info::lookup_primitive_type
+ (gdb::function_view<bool (struct type *)> filter)
{
- struct symbol *symbol;
- struct gdbarch *gdbarch;
-
- gdb_assert (!TYPE_OBJFILE_OWNED (type));
+ for (struct type_and_symbol &tas : primitive_types_and_symbols)
+ {
+ if (filter (tas.type ()))
+ return tas.type ();
+ }
- gdbarch = TYPE_OWNER (type).gdbarch;
- symbol = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct symbol);
+ return nullptr;
+}
- symbol->ginfo.name = TYPE_NAME (type);
- symbol->ginfo.language = lang;
- symbol->owner.arch = gdbarch;
- SYMBOL_OBJFILE_OWNED (symbol) = 0;
- SYMBOL_TYPE (symbol) = type;
- SYMBOL_DOMAIN (symbol) = VAR_DOMAIN;
- SYMBOL_ACLASS_INDEX (symbol) = LOC_TYPEDEF;
+/* See language.h. */
- return symbol;
+struct symbol *
+language_arch_info::lookup_primitive_type_as_symbol (const char *name,
+ enum language lang)
+{
+ type_and_symbol *tas = lookup_primitive_type_and_symbol (name);
+ if (tas != nullptr)
+ return tas->symbol (lang);
+ return nullptr;
}
-/* Initialize the primitive type symbols of language LD.
- The primitive type vector must have already been initialized. */
+/* Helper for the language_lookup_primitive_type overloads to forward
+ to the corresponding language's lookup_primitive_type overload. */
-static void
-language_init_primitive_type_symbols (struct language_arch_info *lai,
- const struct language_defn *la,
- struct gdbarch *gdbarch)
+template<typename T>
+static struct type *
+language_lookup_primitive_type_1 (const struct language_defn *la,
+ struct gdbarch *gdbarch,
+ T arg)
{
- int n;
-
- gdb_assert (lai->primitive_type_vector != NULL);
+ struct language_gdbarch *ld =
+ (struct language_gdbarch *) gdbarch_data (gdbarch, language_gdbarch_data);
+ return ld->arch_info[la->la_language].lookup_primitive_type (arg);
+}
- for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
- continue;
+/* See language.h. */
- lai->primitive_type_symbols
- = GDBARCH_OBSTACK_CALLOC (gdbarch, n + 1, struct symbol *);
+struct type *
+language_lookup_primitive_type (const struct language_defn *la,
+ struct gdbarch *gdbarch,
+ const char *name)
+{
+ return language_lookup_primitive_type_1 (la, gdbarch, name);
+}
- for (n = 0; lai->primitive_type_vector[n] != NULL; ++n)
- {
- lai->primitive_type_symbols[n]
- = language_alloc_type_symbol (la->la_language,
- lai->primitive_type_vector[n]);
- }
+/* See language.h. */
- /* 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. */
+struct type *
+language_lookup_primitive_type (const struct language_defn *la,
+ struct gdbarch *gdbarch,
+ gdb::function_view<bool (struct type *)> filter)
+{
+ return language_lookup_primitive_type_1 (la, gdbarch, filter);
}
/* See language.h. */
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);
- }
+ fprintf_unfiltered (gdb_stdlog,
+ "language_lookup_primitive_type_as_symbol"
+ " (%s, %s, %s)",
+ 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];
+ struct symbol *sym
+ = lai->lookup_primitive_type_as_symbol (name, la->la_language);
if (symbol_lookup_debug)
fprintf_unfiltered (gdb_stdlog, " = %s\n", host_address_to_string (sym));
+
+ /* 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. */
+
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);
+ /* 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