/* MI Command Set - MI parser.
- Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright (C) 2000-2020 Free Software Foundation, Inc.
+
Contributed by Cygnus Solutions (a Red Hat company).
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 "mi-cmds.h"
#include "mi-parse.h"
+#include "charset.h"
#include <ctype.h>
-#include "gdb_string.h"
+#include "cli/cli-utils.h"
+#include "language.h"
+
+static const char mi_no_values[] = "--no-values";
+static const char mi_simple_values[] = "--simple-values";
+static const char mi_all_values[] = "--all-values";
+
+/* Like parse_escape, but leave the results as a host char, not a
+ target char. */
+
+static int
+mi_parse_escape (const char **string_ptr)
+{
+ int c = *(*string_ptr)++;
+
+ switch (c)
+ {
+ case '\n':
+ return -2;
+ case 0:
+ (*string_ptr)--;
+ return 0;
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ {
+ int i = host_hex_value (c);
+ int count = 0;
+
+ while (++count < 3)
+ {
+ c = (**string_ptr);
+ if (isdigit (c) && c != '8' && c != '9')
+ {
+ (*string_ptr)++;
+ i *= 8;
+ i += host_hex_value (c);
+ }
+ else
+ {
+ break;
+ }
+ }
+ return i;
+ }
+
+ case 'a':
+ c = '\a';
+ break;
+ case 'b':
+ c = '\b';
+ break;
+ case 'f':
+ c = '\f';
+ break;
+ case 'n':
+ c = '\n';
+ break;
+ case 'r':
+ c = '\r';
+ break;
+ case 't':
+ c = '\t';
+ break;
+ case 'v':
+ c = '\v';
+ break;
-#undef XMALLOC
-#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
+ default:
+ break;
+ }
+
+ return c;
+}
static void
-mi_parse_argv (char *args, struct mi_parse *parse)
+mi_parse_argv (const char *args, struct mi_parse *parse)
{
- char *chp = args;
+ const char *chp = args;
int argc = 0;
- char **argv = xmalloc ((argc + 1) * sizeof (char *));
+ char **argv = XNEWVEC (char *, argc + 1);
+
argv[argc] = NULL;
while (1)
{
char *arg;
- /* skip leading white space */
- while (isspace (*chp))
- chp++;
+
+ /* Skip leading white space. */
+ chp = skip_spaces (chp);
/* Three possibilities: EOF, quoted string, or other text. */
switch (*chp)
{
return;
case '"':
{
- /* A quoted string. */
+ /* A quoted string. */
int len;
- char *start = chp + 1;
- /* Determine the buffer size. */
+ const char *start = chp + 1;
+
+ /* Determine the buffer size. */
chp = start;
len = 0;
while (*chp != '\0' && *chp != '"')
if (*chp == '\\')
{
chp++;
- if (parse_escape (&chp) <= 0)
+ if (mi_parse_escape (&chp) <= 0)
{
- /* Do not allow split lines or "\000" */
+ /* Do not allow split lines or "\000". */
freeargv (argv);
return;
}
chp++;
len++;
}
- /* Insist on a closing quote. */
+ /* Insist on a closing quote. */
if (*chp != '"')
{
freeargv (argv);
return;
}
- /* Insist on trailing white space. */
+ /* Insist on trailing white space. */
if (chp[1] != '\0' && !isspace (chp[1]))
{
freeargv (argv);
return;
}
- /* create the buffer. */
- arg = xmalloc ((len + 1) * sizeof (char));
- /* And copy the characters in. */
+ /* Create the buffer and copy characters in. */
+ arg = XNEWVEC (char, len + 1);
chp = start;
len = 0;
while (*chp != '\0' && *chp != '"')
if (*chp == '\\')
{
chp++;
- arg[len] = parse_escape (&chp);
+ arg[len] = mi_parse_escape (&chp);
}
else
arg[len] = *chp++;
len++;
}
arg[len] = '\0';
- chp++; /* that closing quote. */
+ chp++; /* That closing quote. */
break;
}
default:
{
- /* An unquoted string. Accumulate all non blank
- characters into a buffer. */
+ /* An unquoted string. Accumulate all non-blank
+ characters into a buffer. */
int len;
- char *start = chp;
+ const char *start = chp;
+
while (*chp != '\0' && !isspace (*chp))
{
chp++;
}
len = chp - start;
- arg = xmalloc ((len + 1) * sizeof (char));
+ arg = XNEWVEC (char, len + 1);
strncpy (arg, start, len);
arg[len] = '\0';
break;
}
}
- /* Append arg to argv. */
- argv = xrealloc (argv, (argc + 2) * sizeof (char *));
+ /* Append arg to argv. */
+ argv = XRESIZEVEC (char *, argv, argc + 2);
argv[argc++] = arg;
argv[argc] = NULL;
}
}
-
-void
-mi_parse_free (struct mi_parse *parse)
+mi_parse::mi_parse ()
+ : op (MI_COMMAND),
+ command (NULL),
+ token (NULL),
+ cmd (NULL),
+ cmd_start (NULL),
+ args (NULL),
+ argv (NULL),
+ argc (0),
+ all (0),
+ thread_group (-1),
+ thread (-1),
+ frame (-1),
+ language (language_unknown)
{
- if (parse == NULL)
- return;
- if (parse->command != NULL)
- xfree (parse->command);
- if (parse->token != NULL)
- xfree (parse->token);
- if (parse->args != NULL)
- xfree (parse->args);
- if (parse->argv != NULL)
- freeargv (parse->argv);
- xfree (parse);
}
+mi_parse::~mi_parse ()
+{
+ xfree (command);
+ xfree (token);
+ xfree (args);
+ freeargv (argv);
+}
-struct mi_parse *
-mi_parse (char *cmd)
+std::unique_ptr<struct mi_parse>
+mi_parse (const char *cmd, char **token)
{
- char *chp;
- struct mi_parse *parse = XMALLOC (struct mi_parse);
- memset (parse, 0, sizeof (*parse));
+ const char *chp;
- /* Before starting, skip leading white space. */
- while (isspace (*cmd))
- cmd++;
+ std::unique_ptr<struct mi_parse> parse (new struct mi_parse);
- /* Find/skip any token and then extract it. */
+ /* Before starting, skip leading white space. */
+ cmd = skip_spaces (cmd);
+
+ /* Find/skip any token and then extract it. */
for (chp = cmd; *chp >= '0' && *chp <= '9'; chp++)
;
- parse->token = xmalloc ((chp - cmd + 1) * sizeof (char *));
- memcpy (parse->token, cmd, (chp - cmd));
- parse->token[chp - cmd] = '\0';
+ *token = (char *) xmalloc (chp - cmd + 1);
+ memcpy (*token, cmd, (chp - cmd));
+ (*token)[chp - cmd] = '\0';
- /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
+ /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
if (*chp != '-')
{
- while (isspace (*chp))
- chp++;
+ chp = skip_spaces (chp);
parse->command = xstrdup (chp);
parse->op = CLI_COMMAND;
+
return parse;
}
- /* Extract the command. */
+ /* Extract the command. */
{
- char *tmp = chp + 1; /* discard ``-'' */
+ const char *tmp = chp + 1; /* discard ``-'' */
+
for (; *chp && !isspace (*chp); chp++)
;
- parse->command = xmalloc ((chp - tmp + 1) * sizeof (char *));
+ parse->command = (char *) xmalloc (chp - tmp + 1);
memcpy (parse->command, tmp, chp - tmp);
parse->command[chp - tmp] = '\0';
}
- /* Find the command in the MI table. */
+ /* Find the command in the MI table. */
parse->cmd = mi_lookup (parse->command);
if (parse->cmd == NULL)
+ throw_error (UNDEFINED_COMMAND_ERROR,
+ _("Undefined MI command: %s"), parse->command);
+
+ /* Skip white space following the command. */
+ chp = skip_spaces (chp);
+
+ /* Parse the --thread and --frame options, if present. At present,
+ some important commands, like '-break-*' are implemented by
+ forwarding to the CLI layer directly. We want to parse --thread
+ and --frame here, so as not to leave those option in the string
+ that will be passed to CLI.
+
+ Same for the --language option. */
+
+ for (;;)
{
- /* FIXME: This should be a function call. */
- fprintf_unfiltered
- (raw_stdout,
- "%s^error,msg=\"Undefined MI command: %s\"\n",
- parse->token, parse->command);
- mi_parse_free (parse);
- return NULL;
- }
+ const char *option;
+ size_t as = sizeof ("--all ") - 1;
+ size_t tgs = sizeof ("--thread-group ") - 1;
+ size_t ts = sizeof ("--thread ") - 1;
+ size_t fs = sizeof ("--frame ") - 1;
+ size_t ls = sizeof ("--language ") - 1;
+
+ if (strncmp (chp, "--all ", as) == 0)
+ {
+ parse->all = 1;
+ chp += as;
+ }
+ /* See if --all is the last token in the input. */
+ if (strcmp (chp, "--all") == 0)
+ {
+ parse->all = 1;
+ chp += strlen (chp);
+ }
+ if (strncmp (chp, "--thread-group ", tgs) == 0)
+ {
+ char *endp;
+
+ option = "--thread-group";
+ if (parse->thread_group != -1)
+ error (_("Duplicate '--thread-group' option"));
+ chp += tgs;
+ if (*chp != 'i')
+ error (_("Invalid thread group id"));
+ chp += 1;
+ parse->thread_group = strtol (chp, &endp, 10);
+ chp = endp;
+ }
+ else if (strncmp (chp, "--thread ", ts) == 0)
+ {
+ char *endp;
- /* Skip white space following the command. */
- while (isspace (*chp))
- chp++;
+ option = "--thread";
+ if (parse->thread != -1)
+ error (_("Duplicate '--thread' option"));
+ chp += ts;
+ parse->thread = strtol (chp, &endp, 10);
+ chp = endp;
+ }
+ else if (strncmp (chp, "--frame ", fs) == 0)
+ {
+ char *endp;
+
+ option = "--frame";
+ if (parse->frame != -1)
+ error (_("Duplicate '--frame' option"));
+ chp += fs;
+ parse->frame = strtol (chp, &endp, 10);
+ chp = endp;
+ }
+ else if (strncmp (chp, "--language ", ls) == 0)
+ {
+ option = "--language";
+ chp += ls;
+ std::string lang_name = extract_arg (&chp);
+
+ parse->language = language_enum (lang_name.c_str ());
+ if (parse->language == language_unknown
+ || parse->language == language_auto)
+ error (_("Invalid --language argument: %s"), lang_name.c_str ());
+ }
+ else
+ break;
+
+ if (*chp != '\0' && !isspace (*chp))
+ error (_("Invalid value for the '%s' option"), option);
+ chp = skip_spaces (chp);
+ }
/* For new argv commands, attempt to return the parsed argument
- list. */
+ list. */
if (parse->cmd->argv_func != NULL)
{
- mi_parse_argv (chp, parse);
+ mi_parse_argv (chp, parse.get ());
if (parse->argv == NULL)
- {
- /* FIXME: This should be a function call. */
- fprintf_unfiltered
- (raw_stdout,
- "%s^error,msg=\"Problem parsing arguments: %s %s\"\n",
- parse->token, parse->command, chp);
- mi_parse_free (parse);
- return NULL;
- }
+ error (_("Problem parsing arguments: %s %s"), parse->command, chp);
}
/* FIXME: DELETE THIS */
- /* For CLI and old ARGS commands, also return the remainder of the
+ /* For CLI commands, also return the remainder of the
command line as a single string. */
- if (parse->cmd->args_func != NULL
- || parse->cmd->cli != NULL)
- {
- parse->args = xstrdup (chp);
- }
+ if (parse->cmd->cli.cmd != NULL)
+ parse->args = xstrdup (chp);
- /* Fully parsed. */
+ /* Fully parsed, flag as an MI command. */
parse->op = MI_COMMAND;
return parse;
}
-void
-_initialize_mi_parse (void)
+enum print_values
+mi_parse_print_values (const char *name)
{
+ if (strcmp (name, "0") == 0
+ || strcmp (name, mi_no_values) == 0)
+ return PRINT_NO_VALUES;
+ else if (strcmp (name, "1") == 0
+ || strcmp (name, mi_all_values) == 0)
+ return PRINT_ALL_VALUES;
+ else if (strcmp (name, "2") == 0
+ || strcmp (name, mi_simple_values) == 0)
+ return PRINT_SIMPLE_VALUES;
+ else
+ error (_("Unknown value for PRINT_VALUES: must be: \
+0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
+ mi_no_values, mi_all_values, mi_simple_values);
}
projects / deliverable / binutils-gdb.git / blobdiff