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
)
240 struct cleanup
*cleanup
;
242 std::unique_ptr
<struct mi_parse
> parse (new struct mi_parse
);
244 /* Before starting, skip leading white space. */
245 cmd
= skip_spaces (cmd
);
247 /* Find/skip any token and then extract it. */
248 for (chp
= cmd
; *chp
>= '0' && *chp
<= '9'; chp
++)
250 *token
= (char *) xmalloc (chp
- cmd
+ 1);
251 memcpy (*token
, cmd
, (chp
- cmd
));
252 (*token
)[chp
- cmd
] = '\0';
254 /* This wasn't a real MI command. Return it as a CLI_COMMAND. */
257 chp
= skip_spaces (chp
);
258 parse
->command
= xstrdup (chp
);
259 parse
->op
= CLI_COMMAND
;
264 /* Extract the command. */
266 const char *tmp
= chp
+ 1; /* discard ``-'' */
268 for (; *chp
&& !isspace (*chp
); chp
++)
270 parse
->command
= (char *) xmalloc (chp
- tmp
+ 1);
271 memcpy (parse
->command
, tmp
, chp
- tmp
);
272 parse
->command
[chp
- tmp
] = '\0';
275 /* Find the command in the MI table. */
276 parse
->cmd
= mi_lookup (parse
->command
);
277 if (parse
->cmd
== NULL
)
278 throw_error (UNDEFINED_COMMAND_ERROR
,
279 _("Undefined MI command: %s"), parse
->command
);
281 /* Skip white space following the command. */
282 chp
= skip_spaces (chp
);
284 /* Parse the --thread and --frame options, if present. At present,
285 some important commands, like '-break-*' are implemented by
286 forwarding to the CLI layer directly. We want to parse --thread
287 and --frame here, so as not to leave those option in the string
288 that will be passed to CLI.
290 Same for the --language option. */
295 size_t as
= sizeof ("--all ") - 1;
296 size_t tgs
= sizeof ("--thread-group ") - 1;
297 size_t ts
= sizeof ("--thread ") - 1;
298 size_t fs
= sizeof ("--frame ") - 1;
299 size_t ls
= sizeof ("--language ") - 1;
301 if (strncmp (chp
, "--all ", as
) == 0)
306 /* See if --all is the last token in the input. */
307 if (strcmp (chp
, "--all") == 0)
312 if (strncmp (chp
, "--thread-group ", tgs
) == 0)
316 option
= "--thread-group";
317 if (parse
->thread_group
!= -1)
318 error (_("Duplicate '--thread-group' option"));
321 error (_("Invalid thread group id"));
323 parse
->thread_group
= strtol (chp
, &endp
, 10);
326 else if (strncmp (chp
, "--thread ", ts
) == 0)
331 if (parse
->thread
!= -1)
332 error (_("Duplicate '--thread' option"));
334 parse
->thread
= strtol (chp
, &endp
, 10);
337 else if (strncmp (chp
, "--frame ", fs
) == 0)
342 if (parse
->frame
!= -1)
343 error (_("Duplicate '--frame' option"));
345 parse
->frame
= strtol (chp
, &endp
, 10);
348 else if (strncmp (chp
, "--language ", ls
) == 0)
350 option
= "--language";
352 std::string lang_name
= extract_arg (&chp
);
354 parse
->language
= language_enum (lang_name
.c_str ());
355 if (parse
->language
== language_unknown
356 || parse
->language
== language_auto
)
357 error (_("Invalid --language argument: %s"), lang_name
.c_str ());
362 if (*chp
!= '\0' && !isspace (*chp
))
363 error (_("Invalid value for the '%s' option"), option
);
364 chp
= skip_spaces (chp
);
367 /* For new argv commands, attempt to return the parsed argument
369 if (parse
->cmd
->argv_func
!= NULL
)
371 mi_parse_argv (chp
, parse
.get ());
372 if (parse
->argv
== NULL
)
373 error (_("Problem parsing arguments: %s %s"), parse
->command
, chp
);
376 /* FIXME: DELETE THIS */
377 /* For CLI commands, also return the remainder of the
378 command line as a single string. */
379 if (parse
->cmd
->cli
.cmd
!= NULL
)
380 parse
->args
= xstrdup (chp
);
382 /* Fully parsed, flag as an MI command. */
383 parse
->op
= MI_COMMAND
;
388 mi_parse_print_values (const char *name
)
390 if (strcmp (name
, "0") == 0
391 || strcmp (name
, mi_no_values
) == 0)
392 return PRINT_NO_VALUES
;
393 else if (strcmp (name
, "1") == 0
394 || strcmp (name
, mi_all_values
) == 0)
395 return PRINT_ALL_VALUES
;
396 else if (strcmp (name
, "2") == 0
397 || strcmp (name
, mi_simple_values
) == 0)
398 return PRINT_SIMPLE_VALUES
;
400 error (_("Unknown value for PRINT_VALUES: must be: \
401 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
402 mi_no_values
, mi_all_values
, mi_simple_values
);
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