* defs.h (enum misc_command_type, command_control_type): Enums
for describing the command and control types. (struct command_line): Add new fields to keep track of the command type and body associated with the command. * top.c: Include value.h. Delete whitespace at the end of lines. (build_command_line, get_command_line): New functions. (execute_control_command, while_command, if_command): Likewise. (realloc_body_list, read_next_line): Likewise. (recurse_read_control_structure): Likewise. (execute_user_command): Call execute_control_command. (read_command_lines): Simplify by calling read_next_line, call read_control_structure for "if" and "while" commands. (free_command_lines): Free new fields in the command structure. (define_command): Reset control_level to zero. (init_main): Install command handlers for "if" and "while" commands.
This commit is contained in:
Jeff Law
parent
20c9d49a4e
commit
e52bfe0cc4
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@ -1,3 +1,21 @@
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Wed Sep 7 23:24:50 1994 Jeff Law (law@snake.cs.utah.edu)
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* defs.h (enum misc_command_type, command_control_type): Enums
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for describing the command and control types.
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(struct command_line): Add new fields to keep track of the command
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type and body associated with the command.
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* top.c: Include value.h. Delete whitespace at the end of lines.
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(build_command_line, get_command_line): New functions.
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(execute_control_command, while_command, if_command): Likewise.
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(realloc_body_list, read_next_line): Likewise.
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(recurse_read_control_structure): Likewise.
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(execute_user_command): Call execute_control_command.
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(read_command_lines): Simplify by calling read_next_line, call
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read_control_structure for "if" and "while" commands.
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(free_command_lines): Free new fields in the command structure.
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(define_command): Reset control_level to zero.
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(init_main): Install command handlers for "if" and "while" commands.
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Tue Sep 6 16:24:07 1994 Stan Shebs (shebs@andros.cygnus.com)
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* c-typeprint.c (c_type_print_varspec_prefix,
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24
gdb/defs.h
24
gdb/defs.h
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@ -97,6 +97,7 @@ enum language
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language_c, /* C */
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language_cplus, /* C++ */
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language_chill, /* Chill */
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language_fortran, /* Fortran */
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language_m2, /* Modula-2 */
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language_asm /* Assembly language */
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};
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@ -317,6 +318,26 @@ extern int read_relative_register_raw_bytes PARAMS ((int, char *));
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extern char *tilde_expand PARAMS ((char *));
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/* Control types for commands */
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enum misc_command_type
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{
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ok_command,
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end_command,
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else_command,
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nop_command,
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};
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enum command_control_type
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{
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simple_control,
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break_control,
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continue_control,
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while_control,
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if_control,
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invalid_control
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};
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/* Structure for saved commands lines
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(for breakpoints, defined commands, etc). */
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@ -324,6 +345,9 @@ struct command_line
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{
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struct command_line *next;
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char *line;
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enum command_control_type control_type;
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int body_count;
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struct command_line **body_list;
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};
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extern struct command_line *read_command_lines PARAMS ((void));
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704
gdb/top.c
704
gdb/top.c
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@ -28,6 +28,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "breakpoint.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "language.h"
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#include "terminal.h" /* For job_control. */
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#include "annotate.h"
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@ -57,80 +58,76 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Prototypes for local functions */
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static char *
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symbol_completion_function PARAMS ((char *, int));
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static char * symbol_completion_function PARAMS ((char *, int));
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static void
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command_loop_marker PARAMS ((int));
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static void command_loop_marker PARAMS ((int));
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static void
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init_main PARAMS ((void));
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static void while_command PARAMS ((char *, int));
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static void
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init_cmd_lists PARAMS ((void));
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static void if_command PARAMS ((char *, int));
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static void
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float_handler PARAMS ((int));
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static enum command_control_type
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execute_control_command PARAMS ((struct command_line *));
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static void
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init_signals PARAMS ((void));
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static struct command_line *
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build_command_line PARAMS ((enum command_control_type, char *));
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static void
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set_verbose PARAMS ((char *, int, struct cmd_list_element *));
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static struct command_line *
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get_command_line PARAMS ((enum command_control_type, char *));
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static void
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show_history PARAMS ((char *, int));
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static void realloc_body_list PARAMS ((struct command_line *, int));
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static void
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set_history PARAMS ((char *, int));
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static enum misc_command_type read_next_line PARAMS ((struct command_line **));
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static void
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set_history_size_command PARAMS ((char *, int, struct cmd_list_element *));
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static enum command_control_type
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recurse_read_control_structure PARAMS ((struct command_line *));
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static void
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show_commands PARAMS ((char *, int));
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static void init_main PARAMS ((void));
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static void
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echo_command PARAMS ((char *, int));
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static void init_cmd_lists PARAMS ((void));
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static void
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pwd_command PARAMS ((char *, int));
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static void float_handler PARAMS ((int));
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static void
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show_version PARAMS ((char *, int));
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static void init_signals PARAMS ((void));
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static void
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document_command PARAMS ((char *, int));
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static void set_verbose PARAMS ((char *, int, struct cmd_list_element *));
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static void
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define_command PARAMS ((char *, int));
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static void show_history PARAMS ((char *, int));
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static void
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validate_comname PARAMS ((char *));
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static void set_history PARAMS ((char *, int));
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static void
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help_command PARAMS ((char *, int));
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static void set_history_size_command PARAMS ((char *, int,
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struct cmd_list_element *));
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static void
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show_command PARAMS ((char *, int));
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static void show_commands PARAMS ((char *, int));
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static void
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info_command PARAMS ((char *, int));
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static void echo_command PARAMS ((char *, int));
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static void
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complete_command PARAMS ((char *, int));
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static void pwd_command PARAMS ((char *, int));
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static void
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do_nothing PARAMS ((int));
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static void show_version PARAMS ((char *, int));
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static int
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quit_cover PARAMS ((char *));
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static void document_command PARAMS ((char *, int));
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static void
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disconnect PARAMS ((int));
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static void define_command PARAMS ((char *, int));
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static void
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source_cleanup PARAMS ((FILE *));
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static void validate_comname PARAMS ((char *));
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static void help_command PARAMS ((char *, int));
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static void show_command PARAMS ((char *, int));
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static void info_command PARAMS ((char *, int));
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static void complete_command PARAMS ((char *, int));
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static void do_nothing PARAMS ((int));
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static int quit_cover PARAMS ((char *));
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static void disconnect PARAMS ((int));
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static void source_cleanup PARAMS ((FILE *));
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/* If this definition isn't overridden by the header files, assume
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that isatty and fileno exist on this system. */
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@ -296,6 +293,9 @@ int baud_rate = -1;
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int remote_debug = 0;
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/* Level of control structure. */
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static int control_level;
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/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
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#ifndef STOP_SIGNAL
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@ -546,6 +546,221 @@ gdb_init ()
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init_ui_hook ();
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}
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/* Allocate, initialize a new command line structure for one of the
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control commands (if/while). */
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static struct command_line *
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build_command_line (type, args)
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enum command_control_type type;
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char *args;
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{
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struct command_line *cmd;
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cmd = (struct command_line *)xmalloc (sizeof (struct command_line));
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cmd->next = NULL;
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cmd->control_type = type;
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cmd->body_count = 1;
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cmd->body_list
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= (struct command_line **)xmalloc (sizeof (struct command_line *)
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* cmd->body_count);
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memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
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cmd->line = savestring (args, strlen (args));
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return cmd;
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}
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/* Build and return a new command structure for the control commands
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such as "if" and "while". */
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static struct command_line *
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get_command_line (type, arg)
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enum command_control_type type;
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char *arg;
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{
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struct command_line *cmd;
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struct cleanup *old_chain = NULL;
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/* Allocate and build a new command line structure. */
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cmd = build_command_line (type, arg);
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old_chain = make_cleanup (free_command_lines, &cmd);
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/* Read in the body of this command. */
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if (recurse_read_control_structure (cmd) == invalid_control)
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{
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warning ("error reading in control structure\n");
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do_cleanups (old_chain);
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return NULL;
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}
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discard_cleanups (old_chain);
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return cmd;
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}
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/* Execute the command in CMD. */
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static enum command_control_type
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execute_control_command (cmd)
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struct command_line *cmd;
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{
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struct expression *expr;
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struct command_line *current;
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struct cleanup *old_chain = 0;
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struct cleanup *tmp_chain;
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value_ptr val;
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int loop;
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enum command_control_type ret;
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switch (cmd->control_type)
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{
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case simple_control:
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/* A simple command, execute it and return. */
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execute_command (cmd->line, 0);
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return cmd->control_type;
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case continue_control:
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case break_control:
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/* Return for "continue", and "break" so we can either
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continue the loop at the top, or break out. */
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return cmd->control_type;
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case while_control:
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{
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/* Parse the loop control expression for the while statement. */
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expr = parse_expression (cmd->line);
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tmp_chain = make_cleanup (free_current_contents, &expr);
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if (!old_chain)
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old_chain = tmp_chain;
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ret = simple_control;
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loop = true;
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/* Keep iterating so long as the expression is true. */
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while (loop == true)
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{
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/* Evaluate the expression. */
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val = evaluate_expression (expr);
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/* If the value is false, then break out of the loop. */
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if (!value_true (val))
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break;
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/* Execute the body of the while statement. */
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current = *cmd->body_list;
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while (current)
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{
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ret = execute_control_command (current);
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/* If we got an error, or a "break" command, then stop
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looping. */
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if (ret == invalid_control || ret == break_control)
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{
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loop = false;
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break;
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}
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/* If we got a "continue" command, then restart the loop
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at this point. */
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if (ret == continue_control)
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break;
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/* Get the next statement. */
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current = current->next;
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}
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}
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/* Reset RET so that we don't recurse the break all the way down. */
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if (ret == break_control)
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ret = simple_control;
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break;
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}
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|
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case if_control:
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{
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/* Parse the conditional for the if statement. */
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expr = parse_expression (cmd->line);
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old_chain = make_cleanup (free_current_contents, &expr);
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current = NULL;
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ret = simple_control;
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|
||||
/* Evaluate the conditional. */
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val = evaluate_expression (expr);
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|
||||
/* Choose which arm to take commands from based on the value of the
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conditional expression. */
|
||||
if (value_true (val))
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current = *cmd->body_list;
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else if (cmd->body_count == 2)
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current = *(cmd->body_list + 1);
|
||||
|
||||
/* Execute commands in the given arm. */
|
||||
while (current)
|
||||
{
|
||||
ret = execute_control_command (current);
|
||||
|
||||
/* If we got an error, get out. */
|
||||
if (ret != simple_control)
|
||||
break;
|
||||
|
||||
/* Get the next statement in the body. */
|
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current = current->next;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
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warning ("Invalid control type in command structure.");
|
||||
return invalid_control;
|
||||
}
|
||||
|
||||
if (old_chain)
|
||||
do_cleanups (old_chain);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
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/* "while" command support. Executes a body of statements while the
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||||
loop condition is nonzero. */
|
||||
|
||||
static void
|
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while_command (arg, from_tty)
|
||||
char *arg;
|
||||
int from_tty;
|
||||
{
|
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struct command_line *command = NULL;
|
||||
|
||||
control_level = 1;
|
||||
command = get_command_line (while_control, arg);
|
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|
||||
if (command == NULL)
|
||||
return;
|
||||
|
||||
execute_control_command (command);
|
||||
free_command_lines (&command);
|
||||
}
|
||||
|
||||
/* "if" command support. Execute either the true or false arm depending
|
||||
on the value of the if conditional. */
|
||||
|
||||
static void
|
||||
if_command (arg, from_tty)
|
||||
char *arg;
|
||||
int from_tty;
|
||||
{
|
||||
struct command_line *command = NULL;
|
||||
|
||||
control_level = 1;
|
||||
command = get_command_line (if_control, arg);
|
||||
|
||||
if (command == NULL)
|
||||
return;
|
||||
|
||||
execute_control_command (command);
|
||||
free_command_lines (&command);
|
||||
}
|
||||
|
||||
void
|
||||
execute_user_command (c, args)
|
||||
struct cmd_list_element *c;
|
||||
|
|
@ -553,7 +768,8 @@ execute_user_command (c, args)
|
|||
{
|
||||
register struct command_line *cmdlines;
|
||||
struct cleanup *old_chain;
|
||||
|
||||
enum command_control_type ret;
|
||||
|
||||
if (args)
|
||||
error ("User-defined commands cannot take arguments.");
|
||||
|
||||
|
|
@ -568,7 +784,12 @@ execute_user_command (c, args)
|
|||
instream = (FILE *) 0;
|
||||
while (cmdlines)
|
||||
{
|
||||
execute_command (cmdlines->line, 0);
|
||||
ret = execute_control_command (cmdlines);
|
||||
if (ret != simple_control && ret != break_control)
|
||||
{
|
||||
warning ("Error in control structure.\n");
|
||||
break;
|
||||
}
|
||||
cmdlines = cmdlines->next;
|
||||
}
|
||||
do_cleanups (old_chain);
|
||||
|
|
@ -591,12 +812,12 @@ execute_command (p, from_tty)
|
|||
/* This can happen when command_line_input hits end of file. */
|
||||
if (p == NULL)
|
||||
return;
|
||||
|
||||
|
||||
while (*p == ' ' || *p == '\t') p++;
|
||||
if (*p)
|
||||
{
|
||||
char *arg;
|
||||
|
||||
|
||||
c = lookup_cmd (&p, cmdlist, "", 0, 1);
|
||||
/* Pass null arg rather than an empty one. */
|
||||
arg = *p ? p : 0;
|
||||
|
|
@ -696,7 +917,7 @@ dont_repeat ()
|
|||
/* Read a line from the stream "instream" without command line editing.
|
||||
|
||||
It prints PRROMPT once at the start.
|
||||
Action is compatible with "readline", e.g. space for the result is
|
||||
Action is compatible with "readline", e.g. space for the result is
|
||||
malloc'd and should be freed by the caller.
|
||||
|
||||
A NULL return means end of file. */
|
||||
|
|
@ -724,7 +945,7 @@ gdb_readline (prrompt)
|
|||
/* end-sanitize-mpw */
|
||||
gdb_flush (gdb_stdout);
|
||||
}
|
||||
|
||||
|
||||
result = (char *) xmalloc (result_size);
|
||||
|
||||
while (1)
|
||||
|
|
@ -1484,6 +1705,256 @@ command_line_input (prrompt, repeat, annotation_suffix)
|
|||
return linebuffer;
|
||||
}
|
||||
|
||||
|
||||
/* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
|
||||
code bodies. This is typically used when we encounter an "else"
|
||||
clause for an "if" command. */
|
||||
|
||||
static void
|
||||
realloc_body_list (command, new_length)
|
||||
struct command_line *command;
|
||||
int new_length;
|
||||
{
|
||||
int n;
|
||||
struct command_line **body_list;
|
||||
|
||||
n = command->body_count;
|
||||
|
||||
/* Nothing to do? */
|
||||
if (new_length <= n)
|
||||
return;
|
||||
|
||||
body_list = (struct command_line **)
|
||||
xmalloc (sizeof (struct command_line *) * new_length);
|
||||
|
||||
memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
|
||||
|
||||
free (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. */
|
||||
|
||||
static enum misc_command_type
|
||||
read_next_line (command)
|
||||
struct command_line **command;
|
||||
{
|
||||
char *p, *p1, *prompt_ptr, control_prompt[256];
|
||||
int i = 0;
|
||||
|
||||
if (control_level >= 254)
|
||||
error ("Control nesting too deep!\n");
|
||||
|
||||
/* Set a prompt based on the nesting of the control commands. */
|
||||
if (instream == stdin)
|
||||
{
|
||||
for (i = 0; i < control_level; i++)
|
||||
control_prompt[i] = ' ';
|
||||
control_prompt[i] = '>';
|
||||
control_prompt[i+1] = '\0';
|
||||
prompt_ptr = (char *)&control_prompt[0];
|
||||
}
|
||||
else
|
||||
prompt_ptr = NULL;
|
||||
|
||||
p = command_line_input (prompt_ptr, instream == stdin, NULL);
|
||||
|
||||
/* Not sure what to do here. */
|
||||
if (p == NULL)
|
||||
return end_command;
|
||||
|
||||
/* Strip leading and trailing whitespace. */
|
||||
while (*p == ' ' || *p == '\t')
|
||||
p++;
|
||||
|
||||
p1 = p + strlen (p);
|
||||
while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
|
||||
p1--;
|
||||
|
||||
/* 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))
|
||||
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 == 5 && !strncmp (p, "loop_break", 5))
|
||||
{
|
||||
*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 == 8 && !strncmp (p, "loop_continue", 8))
|
||||
{
|
||||
*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
|
||||
{
|
||||
/* A normal command. */
|
||||
*command = (struct command_line *)
|
||||
xmalloc (sizeof (struct command_line));
|
||||
(*command)->next = NULL;
|
||||
(*command)->line = savestring (p, p1 - p);
|
||||
(*command)->control_type = simple_control;
|
||||
(*command)->body_count = 0;
|
||||
(*command)->body_list = NULL;
|
||||
}
|
||||
|
||||
/* Nothing special. */
|
||||
return ok_command;
|
||||
}
|
||||
|
||||
/* Recursively read in the control structures and create a command_line
|
||||
tructure from them.
|
||||
|
||||
The parent_control parameter is the control structure in which the
|
||||
following commands are nested. */
|
||||
|
||||
static enum command_control_type
|
||||
recurse_read_control_structure (current_cmd)
|
||||
struct command_line *current_cmd;
|
||||
{
|
||||
int current_body, i;
|
||||
enum misc_command_type val;
|
||||
enum command_control_type ret;
|
||||
struct command_line **body_ptr, *child_tail, *next;
|
||||
struct cleanup *old_chains, *tmp_chains;
|
||||
|
||||
old_chains = NULL;
|
||||
child_tail = NULL;
|
||||
current_body = 1;
|
||||
|
||||
/* Sanity checks. */
|
||||
if (current_cmd->control_type == simple_control)
|
||||
{
|
||||
error ("Recursed on a simple control type\n");
|
||||
return invalid_control;
|
||||
}
|
||||
|
||||
if (current_body > current_cmd->body_count)
|
||||
{
|
||||
error ("Allocated body is smaller than this command type needs\n");
|
||||
return invalid_control;
|
||||
}
|
||||
|
||||
/* Read lines from the input stream and build control structures. */
|
||||
while (1)
|
||||
{
|
||||
dont_repeat ();
|
||||
|
||||
next = NULL;
|
||||
val = read_next_line (&next);
|
||||
|
||||
/* Just skip blanks and comments. */
|
||||
if (val == nop_command)
|
||||
continue;
|
||||
|
||||
if (val == end_command)
|
||||
{
|
||||
if (current_cmd->control_type == while_control
|
||||
|| current_cmd->control_type == if_control)
|
||||
{
|
||||
/* Success reading an entire control structure. */
|
||||
ret = simple_control;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = invalid_control;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Not the end of a control structure. */
|
||||
if (val == else_command)
|
||||
{
|
||||
if (current_cmd->control_type == if_control
|
||||
&& current_body == 1)
|
||||
{
|
||||
realloc_body_list (current_cmd, 2);
|
||||
current_body = 2;
|
||||
child_tail = NULL;
|
||||
continue;
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = invalid_control;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (child_tail)
|
||||
{
|
||||
child_tail->next = next;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We have just read the first line of the child's control
|
||||
structure. From now on, arrange to throw away the line
|
||||
we have if we quit or get an error. */
|
||||
body_ptr = current_cmd->body_list;
|
||||
for (i = 1; i < current_body; i++)
|
||||
body_ptr++;
|
||||
|
||||
*body_ptr = next;
|
||||
|
||||
tmp_chains = make_cleanup (free_command_lines, body_ptr);
|
||||
|
||||
if (!old_chains)
|
||||
old_chains = tmp_chains;
|
||||
}
|
||||
|
||||
child_tail = next;
|
||||
|
||||
/* If the latest line is another control structure, then recurse
|
||||
on it. */
|
||||
if (next->control_type == while_control
|
||||
|| next->control_type == if_control)
|
||||
{
|
||||
control_level++;
|
||||
ret = recurse_read_control_structure (next);
|
||||
control_level--;
|
||||
|
||||
if (ret != simple_control)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
dont_repeat ();
|
||||
if (ret == invalid_control && old_chains)
|
||||
do_cleanups (old_chains);
|
||||
else if (old_chains)
|
||||
discard_cleanups (old_chains);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/* Read lines from the input stream
|
||||
and accumulate them in a chain of struct command_line's
|
||||
which is then returned. */
|
||||
|
|
@ -1491,54 +1962,71 @@ command_line_input (prrompt, repeat, annotation_suffix)
|
|||
struct command_line *
|
||||
read_command_lines ()
|
||||
{
|
||||
struct command_line *first = 0;
|
||||
register struct command_line *next, *tail = 0;
|
||||
register char *p, *p1;
|
||||
struct cleanup *old_chain = 0;
|
||||
struct command_line *head, *tail, *next;
|
||||
struct cleanup *old_chain;
|
||||
enum command_control_type ret;
|
||||
enum misc_command_type val;
|
||||
|
||||
head = tail = NULL;
|
||||
old_chain = NULL;
|
||||
|
||||
while (1)
|
||||
{
|
||||
dont_repeat ();
|
||||
p = command_line_input ((char *) NULL, instream == stdin, "commands");
|
||||
if (p == NULL)
|
||||
/* Treat end of file like "end". */
|
||||
break;
|
||||
val = read_next_line (&next);
|
||||
|
||||
/* Ignore blank lines or comments. */
|
||||
if (val == nop_command)
|
||||
continue;
|
||||
|
||||
if (val == end_command)
|
||||
{
|
||||
ret = simple_control;
|
||||
break;
|
||||
}
|
||||
|
||||
if (val != ok_command)
|
||||
{
|
||||
ret = invalid_control;
|
||||
break;
|
||||
}
|
||||
|
||||
if (next->control_type == while_control
|
||||
|| next->control_type == if_control)
|
||||
{
|
||||
control_level++;
|
||||
ret = recurse_read_control_structure (next);
|
||||
control_level--;
|
||||
|
||||
if (ret == invalid_control)
|
||||
break;
|
||||
}
|
||||
|
||||
/* Remove leading and trailing blanks. */
|
||||
while (*p == ' ' || *p == '\t') p++;
|
||||
p1 = p + strlen (p);
|
||||
while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--;
|
||||
|
||||
/* Is this "end"? */
|
||||
if (p1 - p == 3 && !strncmp (p, "end", 3))
|
||||
break;
|
||||
|
||||
/* No => add this line to the chain of command lines. */
|
||||
next = (struct command_line *) xmalloc (sizeof (struct command_line));
|
||||
next->line = savestring (p, p1 - p);
|
||||
next->next = 0;
|
||||
if (tail)
|
||||
{
|
||||
tail->next = next;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We just read the first line.
|
||||
From now on, arrange to throw away the lines we have
|
||||
if we quit or get an error while inside this function. */
|
||||
first = next;
|
||||
old_chain = make_cleanup (free_command_lines, &first);
|
||||
head = next;
|
||||
old_chain = make_cleanup (free_command_lines, &head);
|
||||
}
|
||||
tail = next;
|
||||
}
|
||||
|
||||
dont_repeat ();
|
||||
|
||||
/* Now we are about to return the chain to our caller,
|
||||
so freeing it becomes his responsibility. */
|
||||
if (first)
|
||||
discard_cleanups (old_chain);
|
||||
return first;
|
||||
if (head)
|
||||
{
|
||||
if (ret != invalid_control)
|
||||
{
|
||||
discard_cleanups (old_chain);
|
||||
return head;
|
||||
}
|
||||
else
|
||||
do_cleanups (old_chain);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Free a chain of struct command_line's. */
|
||||
|
|
@ -1549,9 +2037,17 @@ free_command_lines (lptr)
|
|||
{
|
||||
register struct command_line *l = *lptr;
|
||||
register struct command_line *next;
|
||||
struct command_line **blist;
|
||||
int i;
|
||||
|
||||
while (l)
|
||||
{
|
||||
if (l->body_count > 0)
|
||||
{
|
||||
blist = l->body_list;
|
||||
for (i = 0; i < l->body_count; i++, blist++)
|
||||
free_command_lines (blist);
|
||||
}
|
||||
next = l->next;
|
||||
free (l->line);
|
||||
free ((PTR)l);
|
||||
|
|
@ -1718,7 +2214,7 @@ define_command (comname, from_tty)
|
|||
c = lookup_cmd (&tem, cmdlist, "", -1, 1);
|
||||
if (c && !STREQ (comname, c->name))
|
||||
c = 0;
|
||||
|
||||
|
||||
if (c)
|
||||
{
|
||||
if (c->class == class_user || c->class == class_alias)
|
||||
|
|
@ -1751,7 +2247,7 @@ define_command (comname, from_tty)
|
|||
|
||||
comname = savestring (comname, strlen (comname));
|
||||
|
||||
/* If the rest of the commands will be case insensitive, this one
|
||||
/* If the rest of the commands will be case insensitive, this one
|
||||
should behave in the same manner. */
|
||||
for (tem = comname; *tem; tem++)
|
||||
if (isupper(*tem)) *tem = tolower(*tem);
|
||||
|
|
@ -1763,6 +2259,7 @@ End with a line saying just \"end\".\n", comname);
|
|||
gdb_flush (gdb_stdout);
|
||||
}
|
||||
|
||||
control_level = 0;
|
||||
cmds = read_command_lines ();
|
||||
|
||||
if (c && c->class == class_user)
|
||||
|
|
@ -2193,7 +2690,7 @@ show_commands (args, from_tty)
|
|||
/* The next command we want to display is the next one that we haven't
|
||||
displayed yet. */
|
||||
num += Hist_print;
|
||||
|
||||
|
||||
/* If the user repeats this command with return, it should do what
|
||||
"show commands +" does. This is unnecessary if arg is null,
|
||||
because "show commands +" is not useful after "show commands". */
|
||||
|
|
@ -2246,7 +2743,7 @@ int info_verbose = 0; /* Default verbose msgs off */
|
|||
|
||||
/* Called by do_setshow_command. An elaborate joke. */
|
||||
/* ARGSUSED */
|
||||
static void
|
||||
static void
|
||||
set_verbose (args, from_tty, c)
|
||||
char *args;
|
||||
int from_tty;
|
||||
|
|
@ -2254,7 +2751,7 @@ set_verbose (args, from_tty, c)
|
|||
{
|
||||
char *cmdname = "verbose";
|
||||
struct cmd_list_element *showcmd;
|
||||
|
||||
|
||||
showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
|
||||
|
||||
if (info_verbose)
|
||||
|
|
@ -2341,7 +2838,7 @@ static void
|
|||
init_main ()
|
||||
{
|
||||
struct cmd_list_element *c;
|
||||
|
||||
|
||||
#ifdef DEFAULT_PROMPT
|
||||
prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT));
|
||||
#else
|
||||
|
|
@ -2352,7 +2849,7 @@ init_main ()
|
|||
command_editing_p = 1;
|
||||
history_expansion_p = 0;
|
||||
write_history_p = 0;
|
||||
|
||||
|
||||
/* Setup important stuff for command line editing. */
|
||||
rl_completion_entry_function = (int (*)()) symbol_completion_function;
|
||||
rl_completer_word_break_characters = gdb_completer_word_break_characters;
|
||||
|
|
@ -2401,7 +2898,7 @@ until the next time it is started.", &cmdlist);
|
|||
"Set gdb's prompt",
|
||||
&setlist),
|
||||
&showlist);
|
||||
|
||||
|
||||
add_com ("echo", class_support, echo_command,
|
||||
"Print a constant string. Give string as argument.\n\
|
||||
C escape sequences may be used in the argument.\n\
|
||||
|
|
@ -2447,7 +2944,7 @@ when gdb is started.", &cmdlist);
|
|||
add_show_from_set (c, &showlist);
|
||||
c->function.sfunc = set_verbose;
|
||||
set_verbose (NULL, 0, c);
|
||||
|
||||
|
||||
add_show_from_set
|
||||
(add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p,
|
||||
"Set editing of command lines as they are typed.\n\
|
||||
|
|
@ -2518,6 +3015,19 @@ the previous command number shown.",
|
|||
add_cmd ("version", no_class, show_version,
|
||||
"Show what version of GDB this is.", &showlist);
|
||||
|
||||
add_com ("while", class_support, while_command,
|
||||
"Execute nested commands WHILE the conditional expression is non zero.\n\
|
||||
The conditional expression must follow the word `while' and must in turn be\
|
||||
followed by a new line. The nested commands must be entered one per line,\
|
||||
and should be terminated by the word `end'.");
|
||||
|
||||
add_com ("if", class_support, if_command,
|
||||
"Execute nested commands once IF the conditional expression is non zero.\n\
|
||||
The conditional expression must follow the word `if' and must in turn be\
|
||||
followed by a new line. The nested commands must be entered one per line,\
|
||||
and should be terminated by the word 'else' or `end'. If an else clause\
|
||||
is used, the same rules apply to its nested commands as to the first ones.");
|
||||
|
||||
/* If target is open when baud changes, it doesn't take effect until the
|
||||
next open (I think, not sure). */
|
||||
add_show_from_set (add_set_cmd ("remotebaud", no_class,
|
||||
|
|
|
|||
Loading…
Reference in New Issue