binutils-gdb/gdb/python/python-cmd.c

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gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
2009-02-06 22:33:59 +01:00
/* gdb commands implemented in Python
Copyright (C) 2008, 2009 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "value.h"
#include "exceptions.h"
#include "python-internal.h"
#include "charset.h"
#include "gdbcmd.h"
#include "cli/cli-decode.h"
#include "completer.h"
/* Struct representing built-in completion types. */
struct cmdpy_completer
{
/* Python symbol name. */
char *name;
/* Completion function. */
char **(*completer) (struct cmd_list_element *, char *, char *);
};
static struct cmdpy_completer completers[] =
{
{ "COMPLETE_NONE", noop_completer },
{ "COMPLETE_FILENAME", filename_completer },
{ "COMPLETE_LOCATION", location_completer },
{ "COMPLETE_COMMAND", command_completer },
{ "COMPLETE_SYMBOL", make_symbol_completion_list_fn },
};
#define N_COMPLETERS (sizeof (completers) / sizeof (completers[0]))
/* A gdb command. For the time being only ordinary commands (not
set/show commands) are allowed. */
struct cmdpy_object
{
PyObject_HEAD
/* The corresponding gdb command object, or NULL if the command is
no longer installed. */
struct cmd_list_element *command;
/* A prefix command requires storage for a list of its sub-commands.
A pointer to this is passed to add_prefix_command, and to add_cmd
for sub-commands of that prefix. If this Command is not a prefix
command, then this field is unused. */
struct cmd_list_element *sub_list;
};
typedef struct cmdpy_object cmdpy_object;
static PyTypeObject cmdpy_object_type;
/* Constants used by this module. */
static PyObject *invoke_cst;
static PyObject *complete_cst;
/* Python function which wraps dont_repeat. */
static PyObject *
cmdpy_dont_repeat (PyObject *self, PyObject *args)
{
dont_repeat ();
Py_RETURN_NONE;
}
/* Called if the gdb cmd_list_element is destroyed. */
static void
cmdpy_destroyer (struct cmd_list_element *self, void *context)
{
cmdpy_object *cmd;
PyGILState_STATE state;
state = PyGILState_Ensure ();
/* Release our hold on the command object. */
cmd = (cmdpy_object *) context;
cmd->command = NULL;
Py_DECREF (cmd);
/* We allocated the name, doc string, and perhaps the prefix
name. */
xfree (self->name);
xfree (self->doc);
xfree (self->prefixname);
PyGILState_Release (state);
}
/* Called by gdb to invoke the command. */
static void
cmdpy_function (struct cmd_list_element *command, char *args, int from_tty)
{
cmdpy_object *obj = (cmdpy_object *) get_cmd_context (command);
PyObject *argobj, *ttyobj, *result;
struct cleanup *cleanup;
PyGILState_STATE state;
state = PyGILState_Ensure ();
cleanup = make_cleanup_py_restore_gil (&state);
if (! obj)
error (_("Invalid invocation of Python command object."));
if (! PyObject_HasAttr ((PyObject *) obj, invoke_cst))
{
if (obj->command->prefixname)
{
/* A prefix command does not need an invoke method. */
do_cleanups (cleanup);
return;
}
error (_("Python command object missing 'invoke' method."));
}
if (! args)
args = "";
argobj = PyUnicode_Decode (args, strlen (args), host_charset (), NULL);
if (! argobj)
error (_("Could not convert arguments to Python string."));
ttyobj = from_tty ? Py_True : Py_False;
Py_INCREF (ttyobj);
result = PyObject_CallMethodObjArgs ((PyObject *) obj, invoke_cst, argobj,
ttyobj, NULL);
Py_DECREF (argobj);
Py_DECREF (ttyobj);
if (! result)
{
PyObject *ptype, *pvalue, *ptraceback;
char *s, *str;
PyErr_Fetch (&ptype, &pvalue, &ptraceback);
if (pvalue && PyString_Check (pvalue))
{
/* Make a temporary copy of the string data. */
char *s = PyString_AsString (pvalue);
char *copy = alloca (strlen (s) + 1);
strcpy (copy, s);
PyErr_Restore (ptype, pvalue, ptraceback);
gdbpy_print_stack ();
error (_("Error occurred in Python command: %s"), copy);
}
else
{
PyErr_Restore (ptype, pvalue, ptraceback);
gdbpy_print_stack ();
error (_("Error occurred in Python command."));
}
}
Py_DECREF (result);
do_cleanups (cleanup);
}
/* Called by gdb for command completion. */
static char **
cmdpy_completer (struct cmd_list_element *command, char *text, char *word)
{
cmdpy_object *obj = (cmdpy_object *) get_cmd_context (command);
PyObject *textobj, *wordobj, *resultobj = NULL;
char **result = NULL;
struct cleanup *cleanup;
PyGILState_STATE state;
state = PyGILState_Ensure ();
cleanup = make_cleanup_py_restore_gil (&state);
if (! obj)
error (_("Invalid invocation of Python command object."));
if (! PyObject_HasAttr ((PyObject *) obj, complete_cst))
{
/* If there is no complete method, don't error -- instead, just
say that there are no completions. */
goto done;
}
textobj = PyUnicode_Decode (text, strlen (text), host_charset (), NULL);
if (! textobj)
error (_("Could not convert argument to Python string."));
wordobj = PyUnicode_Decode (word, strlen (word), host_charset (), NULL);
if (! wordobj)
error (_("Could not convert argument to Python string."));
resultobj = PyObject_CallMethodObjArgs ((PyObject *) obj, complete_cst,
textobj, wordobj, NULL);
Py_DECREF (textobj);
Py_DECREF (wordobj);
if (! resultobj)
{
/* Just swallow errors here. */
PyErr_Clear ();
goto done;
}
make_cleanup_py_decref (resultobj);
result = NULL;
if (PySequence_Check (resultobj))
{
Py_ssize_t i, len = PySequence_Size (resultobj);
Py_ssize_t out;
if (len < 0)
goto done;
result = (char **) xmalloc ((len + 1) * sizeof (char *));
for (i = out = 0; i < len; ++i)
{
int l;
PyObject *elt = PySequence_GetItem (resultobj, i);
if (elt == NULL || ! gdbpy_is_string (elt))
{
/* Skip problem elements. */
PyErr_Clear ();
continue;
}
result[out] = python_string_to_host_string (elt);
++out;
}
result[out] = NULL;
}
else if (PyInt_Check (resultobj))
{
/* User code may also return one of the completion constants,
thus requesting that sort of completion. */
long value = PyInt_AsLong (resultobj);
if (value >= 0 && value < (long) N_COMPLETERS)
result = completers[value].completer (command, text, word);
}
done:
do_cleanups (cleanup);
return result;
}
/* Helper for cmdpy_init which locates the command list to use and
pulls out the command name.
TEXT is the command name list. The final word in the list is the
name of the new command. All earlier words must be existing prefix
commands.
*BASE_LIST is set to the final prefix command's list of
*sub-commands.
This function returns the xmalloc()d name of the new command. On
error sets the Python error and returns NULL. */
static char *
parse_command_name (char *text, struct cmd_list_element ***base_list)
{
struct cmd_list_element *elt;
int len = strlen (text);
int i, lastchar;
char *prefix_text;
char *result;
/* Skip trailing whitespace. */
for (i = len - 1; i >= 0 && (text[i] == ' ' || text[i] == '\t'); --i)
;
if (i < 0)
{
PyErr_SetString (PyExc_RuntimeError, _("no command name found"));
return NULL;
}
lastchar = i;
/* Find first character of the final word. */
for (; i > 0 && (isalnum (text[i - 1])
|| text[i - 1] == '-'
|| text[i - 1] == '_');
--i)
;
result = xmalloc (lastchar - i + 2);
memcpy (result, &text[i], lastchar - i + 1);
result[lastchar - i + 1] = '\0';
/* Skip whitespace again. */
for (--i; i >= 0 && (text[i] == ' ' || text[i] == '\t'); --i)
;
if (i < 0)
{
*base_list = &cmdlist;
return result;
}
prefix_text = xmalloc (i + 2);
memcpy (prefix_text, text, i + 1);
prefix_text[i + 1] = '\0';
text = prefix_text;
elt = lookup_cmd_1 (&text, cmdlist, NULL, 1);
if (!elt || elt == (struct cmd_list_element *) -1)
{
PyErr_Format (PyExc_RuntimeError, _("could not find command prefix %s"),
prefix_text);
xfree (prefix_text);
xfree (result);
return NULL;
}
if (elt->prefixlist)
{
xfree (prefix_text);
*base_list = elt->prefixlist;
return result;
}
PyErr_Format (PyExc_RuntimeError, _("'%s' is not a prefix command"),
prefix_text);
xfree (prefix_text);
xfree (result);
return NULL;
}
/* Object initializer; sets up gdb-side structures for command.
Use: __init__(NAME, COMMAND_CLASS [, COMPLETER_CLASS][, PREFIX]]).
gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
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NAME is the name of the command. It may consist of multiple words,
in which case the final word is the name of the new command, and
earlier words must be prefix commands.
COMMAND_CLASS is the kind of command. It should be one of the COMMAND_*
gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
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constants defined in the gdb module.
COMPLETER_CLASS is the kind of completer. If not given, the
gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
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"complete" method will be used. Otherwise, it should be one of the
COMPLETE_* constants defined in the gdb module.
If PREFIX is True, then this command is a prefix command.
The documentation for the command is taken from the doc string for
the python class.
*/
static int
cmdpy_init (PyObject *self, PyObject *args, PyObject *kw)
gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
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{
cmdpy_object *obj = (cmdpy_object *) self;
char *name;
int cmdtype;
int completetype = -1;
char *docstring = NULL;
volatile struct gdb_exception except;
struct cmd_list_element **cmd_list;
char *cmd_name, *pfx_name;
static char *keywords[] = { "name", "command_class", "completer_class",
"prefix", NULL };
gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
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PyObject *is_prefix = NULL;
int cmp;
if (obj->command)
{
/* Note: this is apparently not documented in Python. We return
0 for success, -1 for failure. */
PyErr_Format (PyExc_RuntimeError,
_("command object already initialized"));
return -1;
}
if (! PyArg_ParseTupleAndKeywords (args, kw, "si|iO", keywords, &name, &cmdtype,
gdb/ 2009-02-06 Tom Tromey <tromey@redhat.com> * Makefile.in (SUBDIR_PYTHON_OBS): Add python-cmd.o. (SUBDIR_PYTHON_SRCS): Add python-cmd.c. (python-cmd.o): New target. * cli/cli-decode.c (set_cmd_completer): Add self parameter to completer prototype. (add_cmd): Initialize destroyer member of cmd_list_element. Use make_symbol_completion_list_fn as completer. (delete_cmd): Call destroyer if one is set. * cli/cli-decode.h (cmd_list_element): Add cmd parameter to completer member. Add destroyer member. (set_cmd_completer): Add self parameter to completer prototype. * command.h (set_cmd_completer): Add cmd parameter to completer prototype. * completer.c (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt to new completer prototype. (complete_line_internal): Pass new parameter to completer function. * completer.h (noop_completer, filename_completer, location_completer, expression_completer, command_completer): Adapt prototypes to new completer prototype. * interps.c (interpreter_completer): Adapt to new completer prototype. * python/python-cmd.c: New file. * python/python-internal.h (gdbpy_initialize_commands): Add prototype. (gdbpy_doc_cst): Add forward declaration. * python/python.c (gdbpy_doc_cst): Declare. (_initialize_python): Call gdbpy_initialize_commands. Initialize gdbpy_doc_cst. * symtab.c (make_symbol_completion_list_fn): New function. * symtab.h (make_symbol_completion_list_fn): Add prototype. gdb/doc/ 2009-02-06 Tom Tromey <tromey@redhat.com> * gdb.texinfo (Python API): Add entry for Commands In Python. (Commands In Python): New node. gdb/testsuite/ 2009-02-06 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.python/python-cmd.exp: New file.
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&completetype, &is_prefix))
return -1;
if (cmdtype != no_class && cmdtype != class_run
&& cmdtype != class_vars && cmdtype != class_stack
&& cmdtype != class_files && cmdtype != class_support
&& cmdtype != class_info && cmdtype != class_breakpoint
&& cmdtype != class_trace && cmdtype != class_obscure
&& cmdtype != class_maintenance)
{
PyErr_Format (PyExc_RuntimeError, _("invalid command class argument"));
return -1;
}
if (completetype < -1 || completetype >= (int) N_COMPLETERS)
{
PyErr_Format (PyExc_RuntimeError, _("invalid completion type argument"));
return -1;
}
cmd_name = parse_command_name (name, &cmd_list);
if (! cmd_name)
return -1;
pfx_name = NULL;
if (is_prefix != NULL)
{
cmp = PyObject_IsTrue (is_prefix);
if (cmp == 1)
{
int i, out;
/* Make a normalized form of the command name. */
pfx_name = xmalloc (strlen (name) + 2);
i = 0;
out = 0;
while (name[i])
{
/* Skip whitespace. */
while (name[i] == ' ' || name[i] == '\t')
++i;
/* Copy non-whitespace characters. */
while (name[i] && name[i] != ' ' && name[i] != '\t')
pfx_name[out++] = name[i++];
/* Add a single space after each word -- including the final
word. */
pfx_name[out++] = ' ';
}
pfx_name[out] = '\0';
}
else if (cmp < 0)
return -1;
}
if (PyObject_HasAttr (self, gdbpy_doc_cst))
{
PyObject *ds_obj = PyObject_GetAttr (self, gdbpy_doc_cst);
if (ds_obj && gdbpy_is_string (ds_obj))
docstring = python_string_to_host_string (ds_obj);
}
if (! docstring)
docstring = xstrdup (_("This command is not documented."));
Py_INCREF (self);
TRY_CATCH (except, RETURN_MASK_ALL)
{
struct cmd_list_element *cmd;
if (pfx_name)
{
int allow_unknown;
/* If we have our own "invoke" method, then allow unknown
sub-commands. */
allow_unknown = PyObject_HasAttr (self, invoke_cst);
cmd = add_prefix_cmd (cmd_name, (enum command_class) cmdtype,
NULL, docstring, &obj->sub_list,
pfx_name, allow_unknown, cmd_list);
}
else
cmd = add_cmd (cmd_name, (enum command_class) cmdtype, NULL,
docstring, cmd_list);
/* There appears to be no API to set this. */
cmd->func = cmdpy_function;
cmd->destroyer = cmdpy_destroyer;
obj->command = cmd;
set_cmd_context (cmd, self);
set_cmd_completer (cmd, ((completetype == -1) ? cmdpy_completer
: completers[completetype].completer));
}
if (except.reason < 0)
{
xfree (cmd_name);
xfree (docstring);
xfree (pfx_name);
Py_DECREF (self);
PyErr_Format (except.reason == RETURN_QUIT
? PyExc_KeyboardInterrupt : PyExc_RuntimeError,
"%s", except.message);
return -1;
}
return 0;
}
/* Initialize the 'commands' code. */
void
gdbpy_initialize_commands (void)
{
int i;
if (PyType_Ready (&cmdpy_object_type) < 0)
return;
/* Note: alias and user are special; pseudo appears to be unused,
and there is no reason to expose tui or xdb, I think. */
if (PyModule_AddIntConstant (gdb_module, "COMMAND_NONE", no_class) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_RUNNING", class_run) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_DATA", class_vars) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_STACK", class_stack) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_FILES", class_files) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_SUPPORT",
class_support) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_STATUS", class_info) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_BREAKPOINTS",
class_breakpoint) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_TRACEPOINTS",
class_trace) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_OBSCURE",
class_obscure) < 0
|| PyModule_AddIntConstant (gdb_module, "COMMAND_MAINTENANCE",
class_maintenance) < 0)
return;
for (i = 0; i < N_COMPLETERS; ++i)
{
if (PyModule_AddIntConstant (gdb_module, completers[i].name, i) < 0)
return;
}
Py_INCREF (&cmdpy_object_type);
PyModule_AddObject (gdb_module, "Command",
(PyObject *) &cmdpy_object_type);
invoke_cst = PyString_FromString ("invoke");
complete_cst = PyString_FromString ("complete");
}
static PyMethodDef cmdpy_object_methods[] =
{
{ "dont_repeat", cmdpy_dont_repeat, METH_NOARGS,
"Prevent command repetition when user enters empty line." },
{ 0 }
};
static PyTypeObject cmdpy_object_type =
{
PyObject_HEAD_INIT (NULL)
0, /*ob_size*/
"gdb.Command", /*tp_name*/
sizeof (cmdpy_object), /*tp_basicsize*/
0, /*tp_itemsize*/
0, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
"GDB command object", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
cmdpy_object_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
cmdpy_init, /* tp_init */
0, /* tp_alloc */
PyType_GenericNew /* tp_new */
};