1 /* MI Command Set - MI parser.
3 Copyright (C) 2000-2020 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
);
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