/* Manages interpreters for GDB, the GNU debugger.
- Copyright (C) 2000-2016 Free Software Foundation, Inc.
+ Copyright (C) 2000-2020 Free Software Foundation, Inc.
Written by Jim Ingham <jingham@apple.com> of Apple Computer, Inc.
#include "defs.h"
#include "gdbcmd.h"
#include "ui-out.h"
-#include "event-loop.h"
+#include "gdbsupport/event-loop.h"
#include "event-top.h"
#include "interps.h"
#include "completer.h"
#include "top.h" /* For command_loop. */
#include "continuations.h"
+#include "main.h"
/* Each UI has its own independent set of interpreters. */
return get_interp_info (current_ui);
}
-struct interp
-{
- /* This is the name in "-i=" and set interpreter. */
- const char *name;
-
- /* Interpreters are stored in a linked list, this is the next
- one... */
- struct interp *next;
-
- /* This is a cookie that an instance of the interpreter can use.
- This is a bit confused right now as the exact initialization
- sequence for it, and how it relates to the interpreter's uiout
- object is a bit confused. */
- void *data;
-
- /* Has the init_proc been run? */
- int inited;
-
- const struct interp_procs *procs;
- int quiet_p;
-};
-
/* The magic initialization routine for this module. */
-void _initialize_interpreter (void);
-
static struct interp *interp_lookup_existing (struct ui *ui,
const char *name);
-/* interp_new - This allocates space for a new interpreter,
- fills the fields from the inputs, and returns a pointer to the
- interpreter. */
-struct interp *
-interp_new (const char *name, const struct interp_procs *procs, void *data)
+interp::interp (const char *name)
+ : m_name (xstrdup (name))
{
- struct interp *new_interp;
-
- new_interp = XNEW (struct interp);
-
- new_interp->name = xstrdup (name);
- new_interp->data = data;
- new_interp->quiet_p = 0;
- new_interp->procs = procs;
- new_interp->inited = 0;
-
- /* Check for required procs. */
- gdb_assert (procs->command_loop_proc != NULL);
+ this->inited = false;
+}
- return new_interp;
+interp::~interp ()
+{
+ xfree (m_name);
}
/* An interpreter factory. Maps an interpreter name to the factory
struct interp_factory
{
+ interp_factory (const char *name_, interp_factory_func func_)
+ : name (name_), func (func_)
+ {}
+
/* This is the name in "-i=INTERP" and "interpreter-exec INTERP". */
const char *name;
interp_factory_func func;
};
-typedef struct interp_factory *interp_factory_p;
-DEF_VEC_P(interp_factory_p);
-
/* The registered interpreter factories. */
-static VEC(interp_factory_p) *interpreter_factories = NULL;
+static std::vector<interp_factory> interpreter_factories;
/* See interps.h. */
void
interp_factory_register (const char *name, interp_factory_func func)
{
- struct interp_factory *f;
- int ix;
-
/* Assert that no factory for NAME is already registered. */
- for (ix = 0;
- VEC_iterate (interp_factory_p, interpreter_factories, ix, f);
- ++ix)
- if (strcmp (f->name, name) == 0)
+ for (const interp_factory &f : interpreter_factories)
+ if (strcmp (f.name, name) == 0)
{
internal_error (__FILE__, __LINE__,
_("interpreter factory already registered: \"%s\"\n"),
name);
}
- f = XNEW (struct interp_factory);
- f->name = name;
- f->func = func;
- VEC_safe_push (interp_factory_p, interpreter_factories, f);
+ interpreter_factories.emplace_back (name, func);
}
/* Add interpreter INTERP to the gdb interpreter list. The
{
struct ui_interp_info *ui_interp = get_interp_info (ui);
- gdb_assert (interp_lookup_existing (ui, interp->name) == NULL);
+ gdb_assert (interp_lookup_existing (ui, interp->name ()) == NULL);
interp->next = ui_interp->interp_list;
ui_interp->interp_list = interp;
}
/* This sets the current interpreter to be INTERP. If INTERP has not
- been initialized, then this will also run the init proc. If the
- init proc is successful, return 1, if it fails, set the old
- interpreter back in place and return 0. If we can't restore the
- old interpreter, then raise an internal error, since we are in
- pretty bad shape at this point.
+ been initialized, then this will also run the init method.
The TOP_LEVEL parameter tells if this new interpreter is
the top-level one. The top-level is what is requested
MI is the top-level interpreter, then it will always report
events such as target stops and new thread creation, even if they
are caused by CLI commands. */
-int
-interp_set (struct interp *interp, int top_level)
+
+static void
+interp_set (struct interp *interp, bool top_level)
{
struct ui_interp_info *ui_interp = get_current_interp_info ();
struct interp *old_interp = ui_interp->current_interpreter;
- int first_time = 0;
- char buffer[64];
/* If we already have an interpreter, then trying to
set top level interpreter is kinda pointless. */
if (old_interp != NULL)
{
- ui_out_flush (current_uiout);
- if (old_interp->procs->suspend_proc
- && !old_interp->procs->suspend_proc (old_interp->data))
- {
- error (_("Could not suspend interpreter \"%s\"."),
- old_interp->name);
- }
- }
- else
- {
- first_time = 1;
+ current_uiout->flush ();
+ old_interp->suspend ();
}
ui_interp->current_interpreter = interp;
/* We use interpreter_p for the "set interpreter" variable, so we need
to make sure we have a malloc'ed copy for the set command to free. */
if (interpreter_p != NULL
- && strcmp (interp->name, interpreter_p) != 0)
+ && strcmp (interp->name (), interpreter_p) != 0)
{
xfree (interpreter_p);
- interpreter_p = xstrdup (interp->name);
+ interpreter_p = xstrdup (interp->name ());
}
- /* Run the init proc. If it fails, try to restore the old interp. */
-
+ /* Run the init proc. */
if (!interp->inited)
{
- if (interp->procs->init_proc != NULL)
- {
- interp->data = interp->procs->init_proc (interp, top_level);
- }
- interp->inited = 1;
+ interp->init (top_level);
+ interp->inited = true;
}
/* Do this only after the interpreter is initialized. */
- current_uiout = interp->procs->ui_out_proc (interp);
+ current_uiout = interp->interp_ui_out ();
/* Clear out any installed interpreter hooks/event handlers. */
clear_interpreter_hooks ();
- if (interp->procs->resume_proc != NULL
- && (!interp->procs->resume_proc (interp->data)))
- {
- if (old_interp == NULL || !interp_set (old_interp, 0))
- internal_error (__FILE__, __LINE__,
- _("Failed to initialize new interp \"%s\" %s"),
- interp->name, "and could not restore old interp!\n");
- return 0;
- }
-
- if (!first_time && !interp_quiet_p (interp))
- {
- xsnprintf (buffer, sizeof (buffer),
- "Switching to interpreter \"%.24s\".\n", interp->name);
- ui_out_text (current_uiout, buffer);
- }
-
- return 1;
+ interp->resume ();
}
/* Look up the interpreter for NAME. If no such interpreter exists,
interp != NULL;
interp = interp->next)
{
- if (strcmp (interp->name, name) == 0)
+ if (strcmp (interp->name (), name) == 0)
return interp;
}
struct interp *
interp_lookup (struct ui *ui, const char *name)
{
- struct interp_factory *factory;
- struct interp *interp;
- int ix;
-
if (name == NULL || strlen (name) == 0)
return NULL;
/* Only create each interpreter once per top level. */
- interp = interp_lookup_existing (ui, name);
+ struct interp *interp = interp_lookup_existing (ui, name);
if (interp != NULL)
return interp;
- for (ix = 0;
- VEC_iterate (interp_factory_p, interpreter_factories, ix, factory);
- ++ix)
- if (strcmp (factory->name, name) == 0)
+ for (const interp_factory &factory : interpreter_factories)
+ if (strcmp (factory.name, name) == 0)
{
- interp = factory->func (name);
+ interp = factory.func (name);
interp_add (ui, interp);
return interp;
}
return NULL;
}
-/* Returns the current interpreter. */
+/* See interps.h. */
-struct ui_out *
-interp_ui_out (struct interp *interp)
+void
+set_top_level_interpreter (const char *name)
{
- struct ui_interp_info *ui_interp = get_current_interp_info ();
+ /* Find it. */
+ struct interp *interp = interp_lookup (current_ui, name);
if (interp == NULL)
- interp = ui_interp->current_interpreter;
- return interp->procs->ui_out_proc (interp);
+ error (_("Interpreter `%s' unrecognized"), name);
+ /* Install it. */
+ interp_set (interp, true);
}
-int
-current_interp_set_logging (int start_log, struct ui_file *out,
- struct ui_file *logfile)
+void
+current_interp_set_logging (ui_file_up logfile, bool logging_redirect,
+ bool debug_redirect)
{
struct ui_interp_info *ui_interp = get_current_interp_info ();
struct interp *interp = ui_interp->current_interpreter;
- if (interp == NULL
- || interp->procs->set_logging_proc == NULL)
- return 0;
-
- return interp->procs->set_logging_proc (interp, start_log, out, logfile);
+ interp->set_logging (std::move (logfile), logging_redirect, debug_redirect);
}
/* Temporarily overrides the current interpreter. */
struct interp *
-interp_set_temp (const char *name)
+scoped_restore_interp::set_interp (const char *name)
{
struct ui_interp_info *ui_interp = get_current_interp_info ();
struct interp *interp = interp_lookup (current_ui, name);
return old_interp;
}
-/* Returns the interpreter's cookie. */
-
-void *
-interp_data (struct interp *interp)
-{
- return interp->data;
-}
-
-/* Returns the interpreter's name. */
-
-const char *
-interp_name (struct interp *interp)
-{
- return interp->name;
-}
-
/* Returns true if the current interp is the passed in name. */
int
current_interp_named_p (const char *interp_name)
struct interp *interp = ui_interp->current_interpreter;
if (interp != NULL)
- return (strcmp (interp->name, interp_name) == 0);
+ return (strcmp (interp->name (), interp_name) == 0);
return 0;
}
return ui_interp->current_interpreter;
}
-/* Run the current command interpreter's main loop. */
+/* See interps.h. */
+
void
-current_interp_command_loop (void)
+interp_pre_command_loop (struct interp *interp)
{
- struct ui_interp_info *ui_interp = get_current_interp_info ();
- struct interp *interp = ui_interp->current_interpreter;
-
- gdb_assert (ui_interp->current_interpreter != NULL);
+ gdb_assert (interp != NULL);
- interp->procs->command_loop_proc (interp->data);
+ interp->pre_command_loop ();
}
/* See interp.h */
int
interp_supports_command_editing (struct interp *interp)
{
- if (interp->procs->supports_command_editing_proc != NULL)
- return interp->procs->supports_command_editing_proc (interp);
- return 0;
-}
-
-int
-interp_quiet_p (struct interp *interp)
-{
- struct ui_interp_info *ui_interp = get_current_interp_info ();
-
- if (interp != NULL)
- return interp->quiet_p;
- else
- return ui_interp->current_interpreter->quiet_p;
-}
-
-static int
-interp_set_quiet (struct interp *interp, int quiet)
-{
- int old_val = interp->quiet_p;
-
- interp->quiet_p = quiet;
- return old_val;
+ return interp->supports_command_editing ();
}
/* interp_exec - This executes COMMAND_STR in the current
{
struct ui_interp_info *ui_interp = get_current_interp_info ();
- struct gdb_exception ex;
- struct interp *save_command_interp;
-
- gdb_assert (interp->procs->exec_proc != NULL);
-
/* See `command_interp' for why we do this. */
- save_command_interp = ui_interp->command_interpreter;
- ui_interp->command_interpreter = interp;
-
- ex = interp->procs->exec_proc (interp->data, command_str);
-
- ui_interp->command_interpreter = save_command_interp;
+ scoped_restore save_command_interp
+ = make_scoped_restore (&ui_interp->command_interpreter, interp);
- return ex;
+ return interp->exec (command_str);
}
/* A convenience routine that nulls out all the common command hooks.
/*print_frame_more_info_hook = 0; */
deprecated_query_hook = 0;
deprecated_warning_hook = 0;
- deprecated_interactive_hook = 0;
deprecated_readline_begin_hook = 0;
deprecated_readline_hook = 0;
deprecated_readline_end_hook = 0;
}
static void
-interpreter_exec_cmd (char *args, int from_tty)
+interpreter_exec_cmd (const char *args, int from_tty)
{
struct ui_interp_info *ui_interp = get_current_interp_info ();
struct interp *old_interp, *interp_to_use;
- char **prules = NULL;
- char **trule = NULL;
unsigned int nrules;
unsigned int i;
- int old_quiet, use_quiet;
- struct cleanup *cleanup;
if (args == NULL)
error_no_arg (_("interpreter-exec command"));
- prules = gdb_buildargv (args);
- cleanup = make_cleanup_freeargv (prules);
-
- nrules = 0;
- for (trule = prules; *trule != NULL; trule++)
- nrules++;
+ gdb_argv prules (args);
+ nrules = prules.count ();
if (nrules < 2)
- error (_("usage: interpreter-exec <interpreter> [ <command> ... ]"));
+ error (_("Usage: interpreter-exec INTERPRETER COMMAND..."));
old_interp = ui_interp->current_interpreter;
if (interp_to_use == NULL)
error (_("Could not find interpreter \"%s\"."), prules[0]);
- /* Temporarily set interpreters quiet. */
- old_quiet = interp_set_quiet (old_interp, 1);
- use_quiet = interp_set_quiet (interp_to_use, 1);
-
- if (!interp_set (interp_to_use, 0))
- error (_("Could not switch to interpreter \"%s\"."), prules[0]);
+ interp_set (interp_to_use, false);
for (i = 1; i < nrules; i++)
{
if (e.reason < 0)
{
interp_set (old_interp, 0);
- interp_set_quiet (interp_to_use, use_quiet);
- interp_set_quiet (old_interp, old_quiet);
error (_("error in command: \"%s\"."), prules[i]);
}
}
interp_set (old_interp, 0);
- interp_set_quiet (interp_to_use, use_quiet);
- interp_set_quiet (old_interp, old_quiet);
-
- do_cleanups (cleanup);
}
-/* List the possible interpreters which could complete the given text. */
-static VEC (char_ptr) *
+/* See interps.h. */
+
+void
interpreter_completer (struct cmd_list_element *ignore,
+ completion_tracker &tracker,
const char *text, const char *word)
{
- struct interp_factory *interp;
- int textlen;
- VEC (char_ptr) *matches = NULL;
- int ix;
-
- textlen = strlen (text);
- for (ix = 0;
- VEC_iterate (interp_factory_p, interpreter_factories, ix, interp);
- ++ix)
+ int textlen = strlen (text);
+
+ for (const interp_factory &interp : interpreter_factories)
{
- if (strncmp (interp->name, text, textlen) == 0)
+ if (strncmp (interp.name, text, textlen) == 0)
{
- char *match;
-
- match = (char *) xmalloc (strlen (word) + strlen (interp->name) + 1);
- if (word == text)
- strcpy (match, interp->name);
- else if (word > text)
- {
- /* Return some portion of interp->name. */
- strcpy (match, interp->name + (word - text));
- }
- else
- {
- /* Return some of text plus interp->name. */
- strncpy (match, word, text - word);
- match[text - word] = '\0';
- strcat (match, interp->name);
- }
- VEC_safe_push (char_ptr, matches, match);
+ tracker.add_completion
+ (make_completion_match_str (interp.name, text, word));
}
}
-
- return matches;
}
struct interp *
return ui_interp->top_level_interpreter;
}
-void *
-top_level_interpreter_data (void)
+/* See interps.h. */
+
+struct interp *
+current_interpreter (void)
{
- struct interp *interp;
+ struct ui_interp_info *ui_interp = get_interp_info (current_ui);
- interp = top_level_interpreter ();
- gdb_assert (interp != NULL);
- return interp->data;
+ return ui_interp->current_interpreter;
}
/* This just adds the "interpreter-exec" command. */
+void _initialize_interpreter ();
void
-_initialize_interpreter (void)
+_initialize_interpreter ()
{
struct cmd_list_element *c;
c = add_cmd ("interpreter-exec", class_support,
interpreter_exec_cmd, _("\
-Execute a command in an interpreter. It takes two arguments:\n\
+Execute a command in an interpreter.\n\
+Usage: interpreter-exec INTERPRETER COMMAND...\n\
The first argument is the name of the interpreter to use.\n\
-The second argument is the command to execute.\n"), &cmdlist);
+The following arguments are the commands to execute.\n\
+A command can have arguments, separated by spaces.\n\
+These spaces must be escaped using \\ or the command\n\
+and its arguments must be enclosed in double quotes."), &cmdlist);
set_cmd_completer (c, interpreter_completer);
}
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