/* GDB CLI command scripting.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright (c) 1986-2002, 2004-2012 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "value.h"
#include "language.h" /* For value_true */
#include <ctype.h>
-#ifdef UI_OUT
#include "ui-out.h"
-#endif
-
+#include "gdb_string.h"
+#include "exceptions.h"
#include "top.h"
+#include "breakpoint.h"
#include "cli/cli-cmds.h"
#include "cli/cli-decode.h"
#include "cli/cli-script.h"
+#include "gdb_assert.h"
-/* From gdb/top.c */
-
-extern void dont_repeat (void);
-
-extern void do_restore_instream_cleanup (void *stream);
-
-/* Prototypes for local functions */
+#include "python/python.h"
+#include "interps.h"
-static struct cleanup *
- make_cleanup_free_command_lines (struct command_line **arg);
+/* Prototypes for local functions. */
static enum command_control_type
- recurse_read_control_structure (struct command_line *current_cmd);
+recurse_read_control_structure (char * (*read_next_line_func) (void),
+ struct command_line *current_cmd,
+ void (*validator)(char *, void *),
+ void *closure);
static char *insert_args (char *line);
static struct cleanup * setup_user_args (char *p);
-static void validate_comname (char *);
+static char *read_next_line (void);
-/* Level of control structure. */
+/* Level of control structure when reading. */
static int control_level;
-/* Source command state variable. */
-static int source_error_allocated;
+/* Level of control structure when executing. */
+static int command_nest_depth = 1;
+
+/* This is to prevent certain commands being printed twice. */
+static int suppress_next_print_command_trace = 0;
/* Structure for arguments to user defined functions. */
#define MAXUSERARGS 10
struct user_args
{
struct user_args *next;
+ /* It is necessary to store a malloced copy of the command line to
+ ensure that the arguments are not overwritten before they are
+ used. */
+ char *command;
struct
{
char *arg;
{
struct command_line *cmd;
- if (args == NULL)
- error ("if/while commands require arguments.\n");
+ if (args == NULL && (type == if_control || type == while_control))
+ error (_("if/while commands require arguments."));
+ gdb_assert (args != NULL);
cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
cmd->next = NULL;
= (struct command_line **) xmalloc (sizeof (struct command_line *)
* cmd->body_count);
memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
- cmd->line = savestring (args, strlen (args));
+ cmd->line = xstrdup (args);
+
return cmd;
}
/* Build and return a new command structure for the control commands
such as "if" and "while". */
-static struct command_line *
+struct command_line *
get_command_line (enum command_control_type type, char *arg)
{
struct command_line *cmd;
old_chain = make_cleanup_free_command_lines (&cmd);
/* Read in the body of this command. */
- if (recurse_read_control_structure (cmd) == invalid_control)
+ if (recurse_read_control_structure (read_next_line, cmd, 0, 0)
+ == invalid_control)
{
- warning ("error reading in control structure\n");
+ warning (_("Error reading in canned sequence of commands."));
do_cleanups (old_chain);
return NULL;
}
}
/* Recursively print a command (including full control structures). */
-#ifdef UI_OUT
+
void
print_command_lines (struct ui_out *uiout, struct command_line *cmd,
unsigned int depth)
list = cmd;
while (list)
{
-
if (depth)
ui_out_spaces (uiout, 2 * depth);
continue;
}
- /* loop_break to break out of a while loop, print it and continue. */
+ /* loop_break to break out of a while loop, print it and
+ continue. */
if (list->control_type == break_control)
{
ui_out_field_string (uiout, NULL, "loop_break");
continue;
}
- /* A while command. Recursively print its subcommands and continue. */
- if (list->control_type == while_control)
+ /* A while command. Recursively print its subcommands and
+ continue. */
+ if (list->control_type == while_control
+ || list->control_type == while_stepping_control)
{
- ui_out_text (uiout, "while ");
- ui_out_field_fmt (uiout, NULL, "while %s", list->line);
+ /* For while-stepping, the line includes the 'while-stepping'
+ token. See comment in process_next_line for explanation.
+ Here, take care not print 'while-stepping' twice. */
+ if (list->control_type == while_control)
+ ui_out_field_fmt (uiout, NULL, "while %s", list->line);
+ else
+ ui_out_field_string (uiout, NULL, list->line);
ui_out_text (uiout, "\n");
print_command_lines (uiout, *list->body_list, depth + 1);
- ui_out_field_string (uiout, NULL, "end");
if (depth)
ui_out_spaces (uiout, 2 * depth);
- ui_out_text (uiout, "end\n");
+ ui_out_field_string (uiout, NULL, "end");
+ ui_out_text (uiout, "\n");
list = list->next;
continue;
}
- /* An if command. Recursively print both arms before continueing. */
+ /* An if command. Recursively print both arms before
+ continueing. */
if (list->control_type == if_control)
{
- ui_out_text (uiout, "if ");
ui_out_field_fmt (uiout, NULL, "if %s", list->line);
ui_out_text (uiout, "\n");
- /* The true arm. */
+ /* The true arm. */
print_command_lines (uiout, list->body_list[0], depth + 1);
/* Show the false arm if it exists. */
if (depth)
ui_out_spaces (uiout, 2 * depth);
ui_out_field_string (uiout, NULL, "else");
- ui_out_text (uiout, "else\n");
+ ui_out_text (uiout, "\n");
print_command_lines (uiout, list->body_list[1], depth + 1);
}
+ if (depth)
+ ui_out_spaces (uiout, 2 * depth);
ui_out_field_string (uiout, NULL, "end");
+ ui_out_text (uiout, "\n");
+ list = list->next;
+ continue;
+ }
+
+ /* A commands command. Print the breakpoint commands and
+ continue. */
+ if (list->control_type == commands_control)
+ {
+ if (*(list->line))
+ ui_out_field_fmt (uiout, NULL, "commands %s", list->line);
+ else
+ ui_out_field_string (uiout, NULL, "commands");
+ ui_out_text (uiout, "\n");
+ print_command_lines (uiout, *list->body_list, depth + 1);
+ if (depth)
+ ui_out_spaces (uiout, 2 * depth);
+ ui_out_field_string (uiout, NULL, "end");
+ ui_out_text (uiout, "\n");
+ list = list->next;
+ continue;
+ }
+
+ if (list->control_type == python_control)
+ {
+ ui_out_field_string (uiout, NULL, "python");
+ ui_out_text (uiout, "\n");
+ /* Don't indent python code at all. */
+ print_command_lines (uiout, *list->body_list, 0);
if (depth)
ui_out_spaces (uiout, 2 * depth);
- ui_out_text (uiout, "end\n");
+ ui_out_field_string (uiout, NULL, "end");
+ ui_out_text (uiout, "\n");
list = list->next;
continue;
}
- /* ignore illegal command type and try next */
+ /* Ignore illegal command type and try next. */
list = list->next;
} /* while (list) */
}
-#else
-void
-print_command_line (struct command_line *cmd, unsigned int depth,
- struct ui_file *stream)
-{
- unsigned int i;
- if (depth)
- {
- for (i = 0; i < depth; i++)
- fputs_filtered (" ", stream);
- }
+/* Handle pre-post hooks. */
- /* A simple command, print it and return. */
- if (cmd->control_type == simple_control)
- {
- fputs_filtered (cmd->line, stream);
- fputs_filtered ("\n", stream);
- return;
- }
+static void
+clear_hook_in_cleanup (void *data)
+{
+ struct cmd_list_element *c = data;
- /* loop_continue to jump to the start of a while loop, print it
- and return. */
- if (cmd->control_type == continue_control)
- {
- fputs_filtered ("loop_continue\n", stream);
- return;
- }
+ c->hook_in = 0; /* Allow hook to work again once it is complete. */
+}
- /* loop_break to break out of a while loop, print it and return. */
- if (cmd->control_type == break_control)
+void
+execute_cmd_pre_hook (struct cmd_list_element *c)
+{
+ if ((c->hook_pre) && (!c->hook_in))
{
- fputs_filtered ("loop_break\n", stream);
- return;
+ struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
+ c->hook_in = 1; /* Prevent recursive hooking. */
+ execute_user_command (c->hook_pre, (char *) 0);
+ do_cleanups (cleanups);
}
+}
- /* A while command. Recursively print its subcommands before returning. */
- if (cmd->control_type == while_control)
+void
+execute_cmd_post_hook (struct cmd_list_element *c)
+{
+ if ((c->hook_post) && (!c->hook_in))
{
- struct command_line *list;
- fputs_filtered ("while ", stream);
- fputs_filtered (cmd->line, stream);
- fputs_filtered ("\n", stream);
- list = *cmd->body_list;
- while (list)
- {
- print_command_line (list, depth + 1, stream);
- list = list->next;
- }
- }
+ struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
- /* An if command. Recursively print both arms before returning. */
- if (cmd->control_type == if_control)
- {
- fputs_filtered ("if ", stream);
- fputs_filtered (cmd->line, stream);
- fputs_filtered ("\n", stream);
- /* The true arm. */
- print_command_line (cmd->body_list[0], depth + 1, stream);
-
- /* Show the false arm if it exists. */
- if (cmd->body_count == 2)
- {
- if (depth)
- {
- for (i = 0; i < depth; i++)
- fputs_filtered (" ", stream);
- }
- fputs_filtered ("else\n", stream);
- print_command_line (cmd->body_list[1], depth + 1, stream);
- }
- if (depth)
- {
- for (i = 0; i < depth; i++)
- fputs_filtered (" ", stream);
- }
- fputs_filtered ("end\n", stream);
+ c->hook_in = 1; /* Prevent recursive hooking. */
+ execute_user_command (c->hook_post, (char *) 0);
+ do_cleanups (cleanups);
}
}
-#endif
/* Execute the command in CMD. */
+static void
+do_restore_user_call_depth (void * call_depth)
+{
+ int *depth = call_depth;
+
+ (*depth)--;
+ if ((*depth) == 0)
+ in_user_command = 0;
+}
+
void
execute_user_command (struct cmd_list_element *c, char *args)
{
- register struct command_line *cmdlines;
+ struct command_line *cmdlines;
struct cleanup *old_chain;
enum command_control_type ret;
-
- old_chain = setup_user_args (args);
+ static int user_call_depth = 0;
+ extern int max_user_call_depth;
cmdlines = c->user_commands;
if (cmdlines == 0)
/* Null command */
return;
+ old_chain = setup_user_args (args);
+
+ if (++user_call_depth > max_user_call_depth)
+ error (_("Max user call depth exceeded -- command aborted."));
+
+ make_cleanup (do_restore_user_call_depth, &user_call_depth);
+
/* Set the instream to 0, indicating execution of a
user-defined function. */
- old_chain = make_cleanup (do_restore_instream_cleanup, instream);
+ make_cleanup (do_restore_instream_cleanup, instream);
instream = (FILE *) 0;
+
+ /* Also set the global in_user_command, so that NULL instream is
+ not confused with Insight. */
+ in_user_command = 1;
+
+ make_cleanup_restore_integer (&interpreter_async);
+ interpreter_async = 0;
+
+ command_nest_depth++;
while (cmdlines)
{
ret = execute_control_command (cmdlines);
if (ret != simple_control && ret != break_control)
{
- warning ("Error in control structure.\n");
+ warning (_("Error executing canned sequence of commands."));
break;
}
cmdlines = cmdlines->next;
}
+ command_nest_depth--;
do_cleanups (old_chain);
}
+/* This function is called every time GDB prints a prompt. It ensures
+ that errors and the like do not confuse the command tracing. */
+
+void
+reset_command_nest_depth (void)
+{
+ command_nest_depth = 1;
+
+ /* Just in case. */
+ suppress_next_print_command_trace = 0;
+}
+
+/* Print the command, prefixed with '+' to represent the call depth.
+ This is slightly complicated because this function may be called
+ from execute_command and execute_control_command. Unfortunately
+ execute_command also prints the top level control commands.
+ In these cases execute_command will call execute_control_command
+ via while_command or if_command. Inner levels of 'if' and 'while'
+ are dealt with directly. Therefore we can use these functions
+ to determine whether the command has been printed already or not. */
+void
+print_command_trace (const char *cmd)
+{
+ int i;
+
+ if (suppress_next_print_command_trace)
+ {
+ suppress_next_print_command_trace = 0;
+ return;
+ }
+
+ if (!source_verbose && !trace_commands)
+ return;
+
+ for (i=0; i < command_nest_depth; i++)
+ printf_filtered ("+");
+
+ printf_filtered ("%s\n", cmd);
+}
+
enum command_control_type
execute_control_command (struct command_line *cmd)
{
struct expression *expr;
struct command_line *current;
- struct cleanup *old_chain = 0;
- value_ptr val;
- value_ptr val_mark;
+ struct cleanup *old_chain = make_cleanup (null_cleanup, 0);
+ struct value *val;
+ struct value *val_mark;
int loop;
enum command_control_type ret;
char *new_line;
+ /* Start by assuming failure, if a problem is detected, the code
+ below will simply "break" out of the switch. */
+ ret = invalid_control;
+
switch (cmd->control_type)
{
case simple_control:
/* A simple command, execute it and return. */
new_line = insert_args (cmd->line);
if (!new_line)
- return invalid_control;
- old_chain = make_cleanup (free_current_contents, &new_line);
+ break;
+ make_cleanup (free_current_contents, &new_line);
execute_command (new_line, 0);
ret = cmd->control_type;
break;
case continue_control:
+ print_command_trace ("loop_continue");
+
+ /* Return for "continue", and "break" so we can either
+ continue the loop at the top, or break out. */
+ ret = cmd->control_type;
+ break;
+
case break_control:
+ print_command_trace ("loop_break");
+
/* Return for "continue", and "break" so we can either
continue the loop at the top, or break out. */
ret = cmd->control_type;
case while_control:
{
+ char *buffer = alloca (strlen (cmd->line) + 7);
+
+ sprintf (buffer, "while %s", cmd->line);
+ print_command_trace (buffer);
+
/* Parse the loop control expression for the while statement. */
new_line = insert_args (cmd->line);
if (!new_line)
- return invalid_control;
- old_chain = make_cleanup (free_current_contents, &new_line);
+ break;
+ make_cleanup (free_current_contents, &new_line);
expr = parse_expression (new_line);
make_cleanup (free_current_contents, &expr);
current = *cmd->body_list;
while (current)
{
+ command_nest_depth++;
ret = execute_control_command (current);
+ command_nest_depth--;
/* If we got an error, or a "break" command, then stop
looping. */
case if_control:
{
+ char *buffer = alloca (strlen (cmd->line) + 4);
+
+ sprintf (buffer, "if %s", cmd->line);
+ print_command_trace (buffer);
+
new_line = insert_args (cmd->line);
if (!new_line)
- return invalid_control;
- old_chain = make_cleanup (free_current_contents, &new_line);
+ break;
+ make_cleanup (free_current_contents, &new_line);
/* Parse the conditional for the if statement. */
expr = parse_expression (new_line);
make_cleanup (free_current_contents, &expr);
val_mark = value_mark ();
val = evaluate_expression (expr);
- /* Choose which arm to take commands from based on the value of the
- conditional expression. */
+ /* Choose which arm to take commands from based on the value
+ of the conditional expression. */
if (value_true (val))
current = *cmd->body_list;
else if (cmd->body_count == 2)
/* Execute commands in the given arm. */
while (current)
{
+ command_nest_depth++;
ret = execute_control_command (current);
+ command_nest_depth--;
/* If we got an error, get out. */
if (ret != simple_control)
break;
}
+ case commands_control:
+ {
+ /* Breakpoint commands list, record the commands in the
+ breakpoint's command list and return. */
+ new_line = insert_args (cmd->line);
+ if (!new_line)
+ break;
+ make_cleanup (free_current_contents, &new_line);
+ ret = commands_from_control_command (new_line, cmd);
+ break;
+ }
+ case python_control:
+ {
+ eval_python_from_control_command (cmd);
+ ret = simple_control;
+ break;
+ }
default:
- warning ("Invalid control type in command structure.");
- return invalid_control;
+ warning (_("Invalid control type in canned commands structure."));
+ break;
}
- if (old_chain)
- do_cleanups (old_chain);
+ do_cleanups (old_chain);
return ret;
}
+/* Like execute_control_command, but first set
+ suppress_next_print_command_trace. */
+
+enum command_control_type
+execute_control_command_untraced (struct command_line *cmd)
+{
+ suppress_next_print_command_trace = 1;
+ return execute_control_command (cmd);
+}
+
+
/* "while" command support. Executes a body of statements while the
loop condition is nonzero. */
while_command (char *arg, int from_tty)
{
struct command_line *command = NULL;
+ struct cleanup *old_chain;
control_level = 1;
command = get_command_line (while_control, arg);
if (command == NULL)
return;
- execute_control_command (command);
+ old_chain = make_cleanup_restore_integer (&interpreter_async);
+ interpreter_async = 0;
+
+ execute_control_command_untraced (command);
free_command_lines (&command);
+
+ do_cleanups (old_chain);
}
/* "if" command support. Execute either the true or false arm depending
if_command (char *arg, int from_tty)
{
struct command_line *command = NULL;
+ struct cleanup *old_chain;
control_level = 1;
command = get_command_line (if_control, arg);
if (command == NULL)
return;
- execute_control_command (command);
+ old_chain = make_cleanup_restore_integer (&interpreter_async);
+ interpreter_async = 0;
+
+ execute_control_command_untraced (command);
free_command_lines (&command);
+
+ do_cleanups (old_chain);
}
/* Cleanup */
arg_cleanup (void *ignore)
{
struct user_args *oargs = user_args;
+
if (!user_args)
internal_error (__FILE__, __LINE__,
- "arg_cleanup called with no user args.\n");
+ _("arg_cleanup called with no user args.\n"));
user_args = user_args->next;
+ xfree (oargs->command);
xfree (oargs);
}
if (p == NULL)
return old_chain;
+ user_args->command = p = xstrdup (p);
+
while (*p)
{
char *start_arg;
if (arg_count >= MAXUSERARGS)
{
- error ("user defined function may only have %d arguments.\n",
+ error (_("user defined function may only have %d arguments."),
MAXUSERARGS);
return old_chain;
}
return old_chain;
}
-/* Given character string P, return a point to the first argument ($arg),
- or NULL if P contains no arguments. */
+/* Given character string P, return a point to the first argument
+ ($arg), or NULL if P contains no arguments. */
static char *
locate_arg (char *p)
{
while ((p = strchr (p, '$')))
{
- if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4]))
+ if (strncmp (p, "$arg", 4) == 0
+ && (isdigit (p[4]) || p[4] == 'c'))
return p;
p++;
}
}
/* Insert the user defined arguments stored in user_arg into the $arg
- arguments found in line, with the updated copy being placed into nline. */
+ arguments found in line, with the updated copy being placed into
+ nline. */
static char *
insert_args (char *line)
char *p, *save_line, *new_line;
unsigned len, i;
- /* First we need to know how much memory to allocate for the new line. */
+ /* If we are not in a user-defined function, treat $argc, $arg0, et
+ cetera as normal convenience variables. */
+ if (user_args == NULL)
+ return xstrdup (line);
+
+ /* First we need to know how much memory to allocate for the new
+ line. */
save_line = line;
len = 0;
while ((p = locate_arg (line)))
len += p - line;
i = p[4] - '0';
- if (i >= user_args->count)
+ if (p[4] == 'c')
{
- error ("Missing argument %d in user function.\n", i);
+ /* $argc. Number will be <=10. */
+ len += user_args->count == 10 ? 2 : 1;
+ }
+ else if (i >= user_args->count)
+ {
+ error (_("Missing argument %d in user function."), i);
return NULL;
}
- len += user_args->a[i].len;
+ else
+ {
+ len += user_args->a[i].len;
+ }
line = p + 5;
}
memcpy (new_line, line, p - line);
new_line += p - line;
- i = p[4] - '0';
- len = user_args->a[i].len;
- if (len)
+ if (p[4] == 'c')
{
- memcpy (new_line, user_args->a[i].arg, len);
- new_line += len;
+ gdb_assert (user_args->count >= 0 && user_args->count <= 10);
+ if (user_args->count == 10)
+ {
+ *(new_line++) = '1';
+ *(new_line++) = '0';
+ }
+ else
+ *(new_line++) = user_args->count + '0';
+ }
+ else
+ {
+ i = p[4] - '0';
+ len = user_args->a[i].len;
+ if (len)
+ {
+ memcpy (new_line, user_args->a[i].arg, len);
+ new_line += len;
+ }
}
line = p + 5;
}
xmalloc (sizeof (struct command_line *) * new_length);
memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
+ memset (body_list + n, 0, sizeof (struct command_line *) * (new_length - n));
xfree (command->body_list);
command->body_list = body_list;
command->body_count = new_length;
}
-/* Read one line from the input stream. If the command is an "else" or
- "end", return such an indication to the caller. */
+/* Read next line from stdout. Passed to read_command_line_1 and
+ recurse_read_control_structure whenever we need to read commands
+ from stdout. */
-static enum misc_command_type
-read_next_line (struct command_line **command)
+static char *
+read_next_line (void)
{
- char *p, *p1, *prompt_ptr, control_prompt[256];
+ char *prompt_ptr, control_prompt[256];
int i = 0;
if (control_level >= 254)
- error ("Control nesting too deep!\n");
+ error (_("Control nesting too deep!"));
/* Set a prompt based on the nesting of the control commands. */
- if (instream == stdin || (instream == 0 && readline_hook != NULL))
+ if (instream == stdin || (instream == 0 && deprecated_readline_hook != NULL))
{
for (i = 0; i < control_level; i++)
control_prompt[i] = ' ';
else
prompt_ptr = NULL;
- p = command_line_input (prompt_ptr, instream == stdin, "commands");
+ return command_line_input (prompt_ptr, instream == stdin, "commands");
+}
+
+/* Process one input line. If the command is an "end", return such an
+ indication to the caller. If PARSE_COMMANDS is true, strip leading
+ whitespace (trailing whitespace is always stripped) in the line,
+ attempt to recognize GDB control commands, and also return an
+ indication if the command is an "else" or a nop.
+
+ Otherwise, only "end" is recognized. */
+
+static enum misc_command_type
+process_next_line (char *p, struct command_line **command, int parse_commands,
+ void (*validator)(char *, void *), void *closure)
+{
+ char *p_end;
+ char *p_start;
+ int not_handled = 0;
/* Not sure what to do here. */
if (p == NULL)
return end_command;
- /* Strip leading and trailing whitespace. */
- while (*p == ' ' || *p == '\t')
- p++;
+ /* Strip trailing whitespace. */
+ p_end = p + strlen (p);
+ while (p_end > p && (p_end[-1] == ' ' || p_end[-1] == '\t'))
+ p_end--;
- p1 = p + strlen (p);
- while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
- p1--;
+ p_start = p;
+ /* Strip leading whitespace. */
+ while (p_start < p_end && (*p_start == ' ' || *p_start == '\t'))
+ p_start++;
- /* Blanks and comments don't really do anything, but we need to
- distinguish them from else, end and other commands which can be
- executed. */
- if (p1 == p || p[0] == '#')
- return nop_command;
-
- /* Is this the end of a simple, while, or if control structure? */
- if (p1 - p == 3 && !strncmp (p, "end", 3))
+ /* 'end' is always recognized, regardless of parse_commands value.
+ We also permit whitespace before end and after. */
+ if (p_end - p_start == 3 && !strncmp (p_start, "end", 3))
return end_command;
-
- /* Is the else clause of an if control structure? */
- if (p1 - p == 4 && !strncmp (p, "else", 4))
- return else_command;
-
- /* Check for while, if, break, continue, etc and build a new command
- line structure for them. */
- if (p1 - p > 5 && !strncmp (p, "while", 5))
- *command = build_command_line (while_control, p + 6);
- else if (p1 - p > 2 && !strncmp (p, "if", 2))
- *command = build_command_line (if_control, p + 3);
- else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
- {
- *command = (struct command_line *)
- xmalloc (sizeof (struct command_line));
- (*command)->next = NULL;
- (*command)->line = NULL;
- (*command)->control_type = break_control;
- (*command)->body_count = 0;
- (*command)->body_list = NULL;
- }
- else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
+
+ if (parse_commands)
{
- *command = (struct command_line *)
- xmalloc (sizeof (struct command_line));
- (*command)->next = NULL;
- (*command)->line = NULL;
- (*command)->control_type = continue_control;
- (*command)->body_count = 0;
- (*command)->body_list = NULL;
+ /* If commands are parsed, we skip initial spaces. Otherwise,
+ which is the case for Python commands and documentation
+ (see the 'document' command), spaces are preserved. */
+ p = p_start;
+
+ /* Blanks and comments don't really do anything, but we need to
+ distinguish them from else, end and other commands which can
+ be executed. */
+ if (p_end == p || p[0] == '#')
+ return nop_command;
+
+ /* Is the else clause of an if control structure? */
+ if (p_end - p == 4 && !strncmp (p, "else", 4))
+ return else_command;
+
+ /* Check for while, if, break, continue, etc and build a new
+ command line structure for them. */
+ if ((p_end - p >= 14 && !strncmp (p, "while-stepping", 14))
+ || (p_end - p >= 8 && !strncmp (p, "stepping", 8))
+ || (p_end - p >= 2 && !strncmp (p, "ws", 2)))
+ {
+ /* Because validate_actionline and encode_action lookup
+ command's line as command, we need the line to
+ include 'while-stepping'.
+
+ For 'ws' alias, the command will have 'ws', not expanded
+ to 'while-stepping'. This is intentional -- we don't
+ really want frontend to send a command list with 'ws',
+ and next break-info returning command line with
+ 'while-stepping'. This should work, but might cause the
+ breakpoint to be marked as changed while it's actually
+ not. */
+ *command = build_command_line (while_stepping_control, p);
+ }
+ else if (p_end - p > 5 && !strncmp (p, "while", 5))
+ {
+ char *first_arg;
+
+ first_arg = p + 5;
+ while (first_arg < p_end && isspace (*first_arg))
+ first_arg++;
+ *command = build_command_line (while_control, first_arg);
+ }
+ else if (p_end - p > 2 && !strncmp (p, "if", 2))
+ {
+ char *first_arg;
+
+ first_arg = p + 2;
+ while (first_arg < p_end && isspace (*first_arg))
+ first_arg++;
+ *command = build_command_line (if_control, first_arg);
+ }
+ else if (p_end - p >= 8 && !strncmp (p, "commands", 8))
+ {
+ char *first_arg;
+
+ first_arg = p + 8;
+ while (first_arg < p_end && isspace (*first_arg))
+ first_arg++;
+ *command = build_command_line (commands_control, first_arg);
+ }
+ else if (p_end - p == 6 && !strncmp (p, "python", 6))
+ {
+ /* Note that we ignore the inline "python command" form
+ here. */
+ *command = build_command_line (python_control, "");
+ }
+ else if (p_end - p == 10 && !strncmp (p, "loop_break", 10))
+ {
+ *command = (struct command_line *)
+ xmalloc (sizeof (struct command_line));
+ (*command)->next = NULL;
+ (*command)->line = NULL;
+ (*command)->control_type = break_control;
+ (*command)->body_count = 0;
+ (*command)->body_list = NULL;
+ }
+ else if (p_end - p == 13 && !strncmp (p, "loop_continue", 13))
+ {
+ *command = (struct command_line *)
+ xmalloc (sizeof (struct command_line));
+ (*command)->next = NULL;
+ (*command)->line = NULL;
+ (*command)->control_type = continue_control;
+ (*command)->body_count = 0;
+ (*command)->body_list = NULL;
+ }
+ else
+ not_handled = 1;
}
- else
+
+ if (!parse_commands || not_handled)
{
/* A normal command. */
*command = (struct command_line *)
xmalloc (sizeof (struct command_line));
(*command)->next = NULL;
- (*command)->line = savestring (p, p1 - p);
+ (*command)->line = savestring (p, p_end - p);
(*command)->control_type = simple_control;
(*command)->body_count = 0;
(*command)->body_list = NULL;
}
+ if (validator)
+ {
+ volatile struct gdb_exception ex;
+
+ TRY_CATCH (ex, RETURN_MASK_ALL)
+ {
+ validator ((*command)->line, closure);
+ }
+ if (ex.reason < 0)
+ {
+ xfree (*command);
+ throw_exception (ex);
+ }
+ }
+
/* Nothing special. */
return ok_command;
}
-/* Recursively read in the control structures and create a command_line
- structure from them.
-
- The parent_control parameter is the control structure in which the
- following commands are nested. */
+/* Recursively read in the control structures and create a
+ command_line structure from them. Use read_next_line_func to
+ obtain lines of the command. */
static enum command_control_type
-recurse_read_control_structure (struct command_line *current_cmd)
+recurse_read_control_structure (char * (*read_next_line_func) (void),
+ struct command_line *current_cmd,
+ void (*validator)(char *, void *),
+ void *closure)
{
int current_body, i;
enum misc_command_type val;
/* Sanity checks. */
if (current_cmd->control_type == simple_control)
- {
- error ("Recursed on a simple control type\n");
- return invalid_control;
- }
+ error (_("Recursed on a simple control type."));
if (current_body > current_cmd->body_count)
- {
- error ("Allocated body is smaller than this command type needs\n");
- return invalid_control;
- }
+ error (_("Allocated body is smaller than this command type needs."));
/* Read lines from the input stream and build control structures. */
while (1)
dont_repeat ();
next = NULL;
- val = read_next_line (&next);
+ val = process_next_line (read_next_line_func (), &next,
+ current_cmd->control_type != python_control,
+ validator, closure);
/* Just skip blanks and comments. */
if (val == nop_command)
if (val == end_command)
{
if (current_cmd->control_type == while_control
- || current_cmd->control_type == if_control)
+ || current_cmd->control_type == while_stepping_control
+ || current_cmd->control_type == if_control
+ || current_cmd->control_type == python_control
+ || current_cmd->control_type == commands_control)
{
- /* Success reading an entire control structure. */
+ /* Success reading an entire canned sequence of commands. */
ret = simple_control;
break;
}
/* If the latest line is another control structure, then recurse
on it. */
if (next->control_type == while_control
- || next->control_type == if_control)
+ || next->control_type == while_stepping_control
+ || next->control_type == if_control
+ || next->control_type == python_control
+ || next->control_type == commands_control)
{
control_level++;
- ret = recurse_read_control_structure (next);
+ ret = recurse_read_control_structure (read_next_line_func, next,
+ validator, closure);
control_level--;
if (ret != simple_control)
/* Read lines from the input stream and accumulate them in a chain of
struct command_line's, which is then returned. For input from a
terminal, the special command "end" is used to mark the end of the
- input, and is not included in the returned chain of commands. */
+ input, and is not included in the returned chain of commands.
+
+ If PARSE_COMMANDS is true, strip leading whitespace (trailing whitespace
+ is always stripped) in the line and attempt to recognize GDB control
+ commands. Otherwise, only "end" is recognized. */
#define END_MESSAGE "End with a line saying just \"end\"."
struct command_line *
-read_command_lines (char *prompt_arg, int from_tty)
+read_command_lines (char *prompt_arg, int from_tty, int parse_commands,
+ void (*validator)(char *, void *), void *closure)
{
- struct command_line *head, *tail, *next;
- struct cleanup *old_chain;
- enum command_control_type ret;
- enum misc_command_type val;
+ struct command_line *head;
- control_level = 0;
- if (readline_begin_hook)
+ if (from_tty && input_from_terminal_p ())
{
- /* Note - intentional to merge messages with no newline */
- (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
+ if (deprecated_readline_begin_hook)
+ {
+ /* Note - intentional to merge messages with no newline. */
+ (*deprecated_readline_begin_hook) ("%s %s\n", prompt_arg,
+ END_MESSAGE);
+ }
+ else
+ {
+ printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
+ gdb_flush (gdb_stdout);
+ }
}
- else if (from_tty && input_from_terminal_p ())
+
+ head = read_command_lines_1 (read_next_line, parse_commands,
+ validator, closure);
+
+ if (deprecated_readline_end_hook && from_tty && input_from_terminal_p ())
{
- printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
- gdb_flush (gdb_stdout);
+ (*deprecated_readline_end_hook) ();
}
+ return (head);
+}
+/* Act the same way as read_command_lines, except that each new line is
+ obtained using READ_NEXT_LINE_FUNC. */
+
+struct command_line *
+read_command_lines_1 (char * (*read_next_line_func) (void), int parse_commands,
+ void (*validator)(char *, void *), void *closure)
+{
+ struct command_line *head, *tail, *next;
+ struct cleanup *old_chain;
+ enum command_control_type ret;
+ enum misc_command_type val;
+
+ control_level = 0;
head = tail = NULL;
old_chain = NULL;
while (1)
{
- val = read_next_line (&next);
+ dont_repeat ();
+ val = process_next_line (read_next_line_func (), &next, parse_commands,
+ validator, closure);
/* Ignore blank lines or comments. */
if (val == nop_command)
}
if (next->control_type == while_control
- || next->control_type == if_control)
+ || next->control_type == if_control
+ || next->control_type == python_control
+ || next->control_type == commands_control
+ || next->control_type == while_stepping_control)
{
control_level++;
- ret = recurse_read_control_structure (next);
+ ret = recurse_read_control_structure (read_next_line_func, next,
+ validator, closure);
control_level--;
if (ret == invalid_control)
do_cleanups (old_chain);
}
- if (readline_end_hook)
- {
- (*readline_end_hook) ();
- }
- return (head);
+ return head;
}
/* Free a chain of struct command_line's. */
void
free_command_lines (struct command_line **lptr)
{
- register struct command_line *l = *lptr;
- register struct command_line *next;
+ struct command_line *l = *lptr;
+ struct command_line *next;
struct command_line **blist;
int i;
xfree (l);
l = next;
}
+ *lptr = NULL;
}
static void
free_command_lines (arg);
}
-static struct cleanup *
+struct cleanup *
make_cleanup_free_command_lines (struct command_line **arg)
{
return make_cleanup (do_free_command_lines_cleanup, arg);
}
+
+struct command_line *
+copy_command_lines (struct command_line *cmds)
+{
+ struct command_line *result = NULL;
+
+ if (cmds)
+ {
+ result = (struct command_line *) xmalloc (sizeof (struct command_line));
+
+ result->next = copy_command_lines (cmds->next);
+ result->line = xstrdup (cmds->line);
+ result->control_type = cmds->control_type;
+ result->body_count = cmds->body_count;
+ if (cmds->body_count > 0)
+ {
+ int i;
+
+ result->body_list = (struct command_line **)
+ xmalloc (sizeof (struct command_line *) * cmds->body_count);
+
+ for (i = 0; i < cmds->body_count; i++)
+ result->body_list[i] = copy_command_lines (cmds->body_list[i]);
+ }
+ else
+ result->body_list = NULL;
+ }
+
+ return result;
+}
\f
-static void
-validate_comname (char *comname)
+/* Validate that *COMNAME is a valid name for a command. Return the
+ containing command list, in case it starts with a prefix command.
+ The prefix must already exist. *COMNAME is advanced to point after
+ any prefix, and a NUL character overwrites the space after the
+ prefix. */
+
+static struct cmd_list_element **
+validate_comname (char **comname)
{
- register char *p;
+ struct cmd_list_element **list = &cmdlist;
+ char *p, *last_word;
+
+ if (*comname == 0)
+ error_no_arg (_("name of command to define"));
+
+ /* Find the last word of the argument. */
+ p = *comname + strlen (*comname);
+ while (p > *comname && isspace (p[-1]))
+ p--;
+ while (p > *comname && !isspace (p[-1]))
+ p--;
+ last_word = p;
+
+ /* Find the corresponding command list. */
+ if (last_word != *comname)
+ {
+ struct cmd_list_element *c;
+ char saved_char, *tem = *comname;
- if (comname == 0)
- error_no_arg ("name of command to define");
+ /* Separate the prefix and the command. */
+ saved_char = last_word[-1];
+ last_word[-1] = '\0';
- p = comname;
+ c = lookup_cmd (&tem, cmdlist, "", 0, 1);
+ if (c->prefixlist == NULL)
+ error (_("\"%s\" is not a prefix command."), *comname);
+
+ list = c->prefixlist;
+ last_word[-1] = saved_char;
+ *comname = last_word;
+ }
+
+ p = *comname;
while (*p)
{
if (!isalnum (*p) && *p != '-' && *p != '_')
- error ("Junk in argument list: \"%s\"", p);
+ error (_("Junk in argument list: \"%s\""), p);
p++;
}
+
+ return list;
}
/* This is just a placeholder in the command data structures. */
CMD_PRE_HOOK,
CMD_POST_HOOK
};
- register struct command_line *cmds;
- register struct cmd_list_element *c, *newc, *oldc, *hookc = 0;
- char *tem = comname;
- char *tem2;
+ struct command_line *cmds;
+ struct cmd_list_element *c, *newc, *hookc = 0, **list;
+ char *tem, *comfull;
char tmpbuf[MAX_TMPBUF];
int hook_type = CMD_NO_HOOK;
int hook_name_size = 0;
#define HOOK_POST_STRING "hookpost-"
#define HOOK_POST_LEN 9
- validate_comname (comname);
+ comfull = comname;
+ list = validate_comname (&comname);
/* Look it up, and verify that we got an exact match. */
- c = lookup_cmd (&tem, cmdlist, "", -1, 1);
- if (c && !STREQ (comname, c->name))
+ tem = comname;
+ c = lookup_cmd (&tem, *list, "", -1, 1);
+ if (c && strcmp (comname, c->name) != 0)
c = 0;
if (c)
{
+ int q;
+
if (c->class == class_user || c->class == class_alias)
- tem = "Redefine command \"%s\"? ";
+ q = query (_("Redefine command \"%s\"? "), c->name);
else
- tem = "Really redefine built-in command \"%s\"? ";
- if (!query (tem, c->name))
- error ("Command \"%s\" not redefined.", c->name);
+ q = query (_("Really redefine built-in command \"%s\"? "), c->name);
+ if (!q)
+ error (_("Command \"%s\" not redefined."), c->name);
}
/* If this new command is a hook, then mark the command which it
{
/* Look up cmd it hooks, and verify that we got an exact match. */
tem = comname + hook_name_size;
- hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
- if (hookc && !STREQ (comname + hook_name_size, hookc->name))
+ hookc = lookup_cmd (&tem, *list, "", -1, 0);
+ if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0)
hookc = 0;
if (!hookc)
{
- warning ("Your new `%s' command does not hook any existing command.",
- comname);
- if (!query ("Proceed? "))
- error ("Not confirmed.");
+ warning (_("Your new `%s' command does not "
+ "hook any existing command."),
+ comfull);
+ if (!query (_("Proceed? ")))
+ error (_("Not confirmed."));
}
}
- comname = savestring (comname, strlen (comname));
+ comname = xstrdup (comname);
/* If the rest of the commands will be case insensitive, this one
- should behave in the same manner. */
+ should behave in the same manner. */
for (tem = comname; *tem; tem++)
if (isupper (*tem))
*tem = tolower (*tem);
- sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
- cmds = read_command_lines (tmpbuf, from_tty);
+ sprintf (tmpbuf, "Type commands for definition of \"%s\".", comfull);
+ cmds = read_command_lines (tmpbuf, from_tty, 1, 0, 0);
if (c && c->class == class_user)
free_command_lines (&c->user_commands);
newc = add_cmd (comname, class_user, user_defined_command,
(c && c->class == class_user)
- ? c->doc : savestring ("User-defined.", 13), &cmdlist);
+ ? c->doc : xstrdup ("User-defined."), list);
newc->user_commands = cmds;
/* If this new command is a hook, then mark both commands as being
{
case CMD_PRE_HOOK:
hookc->hook_pre = newc; /* Target gets hooked. */
- newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
+ newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
break;
case CMD_POST_HOOK:
hookc->hook_post = newc; /* Target gets hooked. */
- newc->hookee_post = hookc; /* We are marked as hooking target cmd. */
+ newc->hookee_post = hookc; /* We are marked as hooking
+ target cmd. */
break;
default:
- /* Should never come here as hookc would be 0. */
- internal_error (__FILE__, __LINE__, "bad switch");
+ /* Should never come here as hookc would be 0. */
+ internal_error (__FILE__, __LINE__, _("bad switch"));
}
}
}
document_command (char *comname, int from_tty)
{
struct command_line *doclines;
- register struct cmd_list_element *c;
- char *tem = comname;
+ struct cmd_list_element *c, **list;
+ char *tem, *comfull;
char tmpbuf[128];
- validate_comname (comname);
+ comfull = comname;
+ list = validate_comname (&comname);
- c = lookup_cmd (&tem, cmdlist, "", 0, 1);
+ tem = comname;
+ c = lookup_cmd (&tem, *list, "", 0, 1);
if (c->class != class_user)
- error ("Command \"%s\" is built-in.", comname);
+ error (_("Command \"%s\" is built-in."), comfull);
- sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
- doclines = read_command_lines (tmpbuf, from_tty);
+ sprintf (tmpbuf, "Type documentation for \"%s\".", comfull);
+ doclines = read_command_lines (tmpbuf, from_tty, 0, 0, 0);
if (c->doc)
xfree (c->doc);
{
- register struct command_line *cl1;
- register int len = 0;
+ struct command_line *cl1;
+ int len = 0;
for (cl1 = doclines; cl1; cl1 = cl1->next)
len += strlen (cl1->line) + 1;
struct source_cleanup_lines_args
{
int old_line;
- char *old_file;
- char *old_pre_error;
- char *old_error_pre_print;
+ const char *old_file;
};
static void
-source_cleanup_lines (PTR args)
+source_cleanup_lines (void *args)
{
struct source_cleanup_lines_args *p =
- (struct source_cleanup_lines_args *) args;
+ (struct source_cleanup_lines_args *) args;
+
source_line_number = p->old_line;
source_file_name = p->old_file;
- source_pre_error = p->old_pre_error;
- error_pre_print = p->old_error_pre_print;
}
-/* ARGSUSED */
-static void
-do_fclose_cleanup (void *stream)
-{
- fclose (stream);
-}
-
-/* Used to implement source_command */
+/* Used to implement source_command. */
void
-script_from_file (FILE *stream, char *file)
+script_from_file (FILE *stream, const char *file)
{
struct cleanup *old_cleanups;
struct source_cleanup_lines_args old_lines;
- int needed_length;
if (stream == NULL)
- {
- internal_error (__FILE__, __LINE__, "called with NULL file pointer!");
- }
-
- old_cleanups = make_cleanup (do_fclose_cleanup, stream);
+ internal_error (__FILE__, __LINE__, _("called with NULL file pointer!"));
old_lines.old_line = source_line_number;
old_lines.old_file = source_file_name;
- old_lines.old_pre_error = source_pre_error;
- old_lines.old_error_pre_print = error_pre_print;
- make_cleanup (source_cleanup_lines, &old_lines);
+ old_cleanups = make_cleanup (source_cleanup_lines, &old_lines);
source_line_number = 0;
source_file_name = file;
- source_pre_error = error_pre_print == NULL ? "" : error_pre_print;
- source_pre_error = savestring (source_pre_error, strlen (source_pre_error));
- make_cleanup (xfree, source_pre_error);
- /* This will get set every time we read a line. So it won't stay "" for
- long. */
+ /* This will get set every time we read a line. So it won't stay ""
+ for long. */
error_pre_print = "";
- needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80;
- if (source_error_allocated < needed_length)
- {
- source_error_allocated *= 2;
- if (source_error_allocated < needed_length)
- source_error_allocated = needed_length;
- if (source_error == NULL)
- source_error = xmalloc (source_error_allocated);
- else
- source_error = xrealloc (source_error, source_error_allocated);
- }
+ {
+ volatile struct gdb_exception e;
- read_command_file (stream);
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ {
+ read_command_file (stream);
+ }
+ switch (e.reason)
+ {
+ case 0:
+ break;
+ case RETURN_ERROR:
+ /* Re-throw the error, but with the file name information
+ prepended. */
+ throw_error (e.error,
+ _("%s:%d: Error in sourced command file:\n%s"),
+ source_file_name, source_line_number, e.message);
+ default:
+ internal_error (__FILE__, __LINE__, _("bad reason"));
+ }
+ }
do_cleanups (old_cleanups);
}
+/* Print the definition of user command C to STREAM. Or, if C is a
+ prefix command, show the definitions of all user commands under C
+ (recursively). PREFIX and NAME combined are the name of the
+ current command. */
void
-show_user_1 (struct cmd_list_element *c, struct ui_file *stream)
+show_user_1 (struct cmd_list_element *c, char *prefix, char *name,
+ struct ui_file *stream)
{
- register struct command_line *cmdlines;
+ struct command_line *cmdlines;
+
+ if (c->prefixlist != NULL)
+ {
+ char *prefixname = c->prefixname;
+
+ for (c = *c->prefixlist; c != NULL; c = c->next)
+ if (c->class == class_user || c->prefixlist != NULL)
+ show_user_1 (c, prefixname, c->name, gdb_stdout);
+ return;
+ }
cmdlines = c->user_commands;
if (!cmdlines)
return;
- fputs_filtered ("User command ", stream);
- fputs_filtered (c->name, stream);
- fputs_filtered (":\n", stream);
+ fprintf_filtered (stream, "User command \"%s%s\":\n", prefix, name);
-#ifdef UI_OUT
- print_command_lines (uiout, cmdlines, 1);
- fputs_filtered ("\n", stream);
-#else
- while (cmdlines)
- {
- print_command_line (cmdlines, 4, stream);
- cmdlines = cmdlines->next;
- }
+ print_command_lines (current_uiout, cmdlines, 1);
fputs_filtered ("\n", stream);
-#endif
}
projects / external / binutils.git / blobdiff