1 /* MI Command Set - MI parser.
3 Copyright (C) 2000-2017 Free Software Foundation, Inc.
5 Contributed by Cygnus Solutions (a Red Hat company).
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "cli/cli-utils.h"
31 static const char mi_no_values[] = "--no-values";
32 static const char mi_simple_values[] = "--simple-values";
33 static const char mi_all_values[] = "--all-values";
35 /* Like parse_escape, but leave the results as a host char, not a
39 mi_parse_escape (const char **string_ptr)
41 int c = *(*string_ptr)++;
60 int i = host_hex_value (c);
66 if (isdigit (c) && c != '8' && c != '9')
70 i += host_hex_value (c);
110 mi_parse_argv (const char *args, struct mi_parse *parse)
112 const char *chp = args;
114 char **argv = XNEWVEC (char *, argc + 1);
121 /* Skip leading white space. */
122 chp = skip_spaces (chp);
123 /* Three possibilities: EOF, quoted string, or other text. */
132 /* A quoted string. */
134 const char *start = chp + 1;
136 /* Determine the buffer size. */
139 while (*chp != '\0' && *chp != '"')
144 if (mi_parse_escape (&chp) <= 0)
146 /* Do not allow split lines or "\000". */
155 /* Insist on a closing quote. */
161 /* Insist on trailing white space. */
162 if (chp[1] != '\0' && !isspace (chp[1]))
167 /* Create the buffer and copy characters in. */
168 arg = XNEWVEC (char, len + 1);
171 while (*chp != '\0' && *chp != '"')
176 arg[len] = mi_parse_escape (&chp);
183 chp++; /* That closing quote. */
188 /* An unquoted string. Accumulate all non-blank
189 characters into a buffer. */
191 const char *start = chp;
193 while (*chp != '\0' && !isspace (*chp))
198 arg = XNEWVEC (char, len + 1);
199 strncpy (arg, start, len);
204 /* Append arg to argv. */
205 argv = XRESIZEVEC (char *, argv, argc + 2);
211 mi_parse::mi_parse ()
224 language (language_unknown)
228 mi_parse::~mi_parse ()
236 std::unique_ptr<struct mi_parse>
237 mi_parse (const char *cmd, char **token)
241 std::unique_ptr<struct mi_parse> parse (new struct mi_parse);
243 /* Before starting, skip leading white space. */
244 cmd = skip_spaces (cmd);
246 /* Find/skip any token and then extract it. */
247 for (chp = cmd; *chp >= '0' && *chp <= '9'; chp++)
249 *token = (char *) xmalloc (chp - cmd + 1);
250 memcpy (*token, cmd, (chp - cmd));
251 (*token)[chp - cmd] = '\0';
253 /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
256 chp = skip_spaces (chp);
257 parse->command = xstrdup (chp);
258 parse->op = CLI_COMMAND;
263 /* Extract the command. */
265 const char *tmp = chp + 1; /* discard ``-'' */
267 for (; *chp && !isspace (*chp); chp++)
269 parse->command = (char *) xmalloc (chp - tmp + 1);
270 memcpy (parse->command, tmp, chp - tmp);
271 parse->command[chp - tmp] = '\0';
274 /* Find the command in the MI table. */
275 parse->cmd = mi_lookup (parse->command);
276 if (parse->cmd == NULL)
277 throw_error (UNDEFINED_COMMAND_ERROR,
278 _("Undefined MI command: %s"), parse->command);
280 /* Skip white space following the command. */
281 chp = skip_spaces (chp);
283 /* Parse the --thread and --frame options, if present. At present,
284 some important commands, like '-break-*' are implemented by
285 forwarding to the CLI layer directly. We want to parse --thread
286 and --frame here, so as not to leave those option in the string
287 that will be passed to CLI.
289 Same for the --language option. */
294 size_t as = sizeof ("--all ") - 1;
295 size_t tgs = sizeof ("--thread-group ") - 1;
296 size_t ts = sizeof ("--thread ") - 1;
297 size_t fs = sizeof ("--frame ") - 1;
298 size_t ls = sizeof ("--language ") - 1;
300 if (strncmp (chp, "--all ", as) == 0)
305 /* See if --all is the last token in the input. */
306 if (strcmp (chp, "--all") == 0)
311 if (strncmp (chp, "--thread-group ", tgs) == 0)
315 option = "--thread-group";
316 if (parse->thread_group != -1)
317 error (_("Duplicate '--thread-group' option"));
320 error (_("Invalid thread group id"));
322 parse->thread_group = strtol (chp, &endp, 10);
325 else if (strncmp (chp, "--thread ", ts) == 0)
330 if (parse->thread != -1)
331 error (_("Duplicate '--thread' option"));
333 parse->thread = strtol (chp, &endp, 10);
336 else if (strncmp (chp, "--frame ", fs) == 0)
341 if (parse->frame != -1)
342 error (_("Duplicate '--frame' option"));
344 parse->frame = strtol (chp, &endp, 10);
347 else if (strncmp (chp, "--language ", ls) == 0)
349 option = "--language";
351 std::string lang_name = extract_arg (&chp);
353 parse->language = language_enum (lang_name.c_str ());
354 if (parse->language == language_unknown
355 || parse->language == language_auto)
356 error (_("Invalid --language argument: %s"), lang_name.c_str ());
361 if (*chp != '\0' && !isspace (*chp))
362 error (_("Invalid value for the '%s' option"), option);
363 chp = skip_spaces (chp);
366 /* For new argv commands, attempt to return the parsed argument
368 if (parse->cmd->argv_func != NULL)
370 mi_parse_argv (chp, parse.get ());
371 if (parse->argv == NULL)
372 error (_("Problem parsing arguments: %s %s"), parse->command, chp);
375 /* FIXME: DELETE THIS */
376 /* For CLI commands, also return the remainder of the
377 command line as a single string. */
378 if (parse->cmd->cli.cmd != NULL)
379 parse->args = xstrdup (chp);
381 /* Fully parsed, flag as an MI command. */
382 parse->op = MI_COMMAND;
387 mi_parse_print_values (const char *name)
389 if (strcmp (name, "0") == 0
390 || strcmp (name, mi_no_values) == 0)
391 return PRINT_NO_VALUES;
392 else if (strcmp (name, "1") == 0
393 || strcmp (name, mi_all_values) == 0)
394 return PRINT_ALL_VALUES;
395 else if (strcmp (name, "2") == 0
396 || strcmp (name, mi_simple_values) == 0)
397 return PRINT_SIMPLE_VALUES;
399 error (_("Unknown value for PRINT_VALUES: must be: \
400 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
401 mi_no_values, mi_all_values, mi_simple_values);