event_location_up
string_to_explicit_location (const char **argp,
const struct language_defn *language,
int dont_throw)
{
event_location_up location;
/* It is assumed that input beginning with '-' and a non-digit
character is an explicit location. "-p" is reserved, though,
for probe locations. */
if (argp == NULL
|| *argp == NULL
|| *argp[0] != '-'
|| !isalpha ((*argp)[1])
|| ((*argp)[0] == '-' && (*argp)[1] == 'p'))
return NULL;
location = new_explicit_location (NULL);
/* Process option/argument pairs. dprintf_command
requires that processing stop on ','. */
while ((*argp)[0] != '\0' && (*argp)[0] != ',')
{
int len;
const char *start;
/* If *ARGP starts with a keyword, stop processing
options. */
if (linespec_lexer_lex_keyword (*argp) != NULL)
break;
/* Mark the start of the string in case we need to rewind. */
start = *argp;
/* Get the option string. */
gdb::unique_xmalloc_ptr<char> opt
= explicit_location_lex_one (argp, language);
*argp = skip_spaces_const (*argp);
/* Get the argument string. */
gdb::unique_xmalloc_ptr<char> oarg
= explicit_location_lex_one (argp, language);
bool have_oarg = oarg != NULL;
*argp = skip_spaces_const (*argp);
/* Use the length of the option to allow abbreviations. */
len = strlen (opt.get ());
/* All options have a required argument. Checking for this required
argument is deferred until later. */
if (strncmp (opt.get (), "-source", len) == 0)
EL_EXPLICIT (location)->source_filename = oarg.release ();
else if (strncmp (opt.get (), "-function", len) == 0)
EL_EXPLICIT (location)->function_name = oarg.release ();
else if (strncmp (opt.get (), "-line", len) == 0)
{
if (have_oarg)
EL_EXPLICIT (location)->line_offset
= linespec_parse_line_offset (oarg.get ());
}
else if (strncmp (opt.get (), "-label", len) == 0)
EL_EXPLICIT (location)->label_name = oarg.release ();
/* Only emit an "invalid argument" error for options
that look like option strings. */
else if (opt.get ()[0] == '-' && !isdigit (opt.get ()[1]))
{
if (!dont_throw)
error (_("invalid explicit location argument, \"%s\""), opt.get ());
}
else
{
/* End of the explicit location specification.
Stop parsing and return whatever explicit location was
parsed. */
*argp = start;
return location;
}
/* It's a little lame to error after the fact, but in this
case, it provides a much better user experience to issue
the "invalid argument" error before any missing
argument error. */
if (!have_oarg && !dont_throw)
error (_("missing argument for \"%s\""), opt.get ());
}
/* One special error check: If a source filename was given
without offset, function, or label, issue an error. */
if (EL_EXPLICIT (location)->source_filename != NULL
&& EL_EXPLICIT (location)->function_name == NULL
&& EL_EXPLICIT (location)->label_name == NULL
&& (EL_EXPLICIT (location)->line_offset.sign == LINE_OFFSET_UNKNOWN)
&& !dont_throw)
{
error (_("Source filename requires function, label, or "
"line offset."));
}
return location;
}
event_location_up
string_to_explicit_location (const char **argp,
const struct language_defn *language,
explicit_completion_info *completion_info)
{
event_location_up location;
/* It is assumed that input beginning with '-' and a non-digit
character is an explicit location. "-p" is reserved, though,
for probe locations. */
if (argp == NULL
|| *argp == NULL
|| *argp[0] != '-'
|| !isalpha ((*argp)[1])
|| ((*argp)[0] == '-' && (*argp)[1] == 'p'))
return NULL;
location = new_explicit_location (NULL);
/* Process option/argument pairs. dprintf_command
requires that processing stop on ','. */
while ((*argp)[0] != '\0' && (*argp)[0] != ',')
{
int len;
const char *start;
/* Clear these on each iteration, since they should be filled
with info about the last option. */
if (completion_info != NULL)
{
completion_info->quoted_arg_start = NULL;
completion_info->quoted_arg_end = NULL;
}
/* If *ARGP starts with a keyword, stop processing
options. */
if (linespec_lexer_lex_keyword (*argp) != NULL)
break;
/* Mark the start of the string in case we need to rewind. */
start = *argp;
if (completion_info != NULL)
completion_info->last_option = start;
/* Get the option string. */
gdb::unique_xmalloc_ptr<char> opt
= explicit_location_lex_one (argp, language, NULL);
/* Use the length of the option to allow abbreviations. */
len = strlen (opt.get ());
/* Get the argument string. */
*argp = skip_spaces (*argp);
/* All options have a required argument. Checking for this
required argument is deferred until later. */
gdb::unique_xmalloc_ptr<char> oarg;
/* True if we have an argument. This is required because we'll
move from OARG before checking whether we have an
argument. */
bool have_oarg = false;
/* True if the option needs an argument. */
bool need_oarg = false;
/* Convenience to consistently set both OARG/HAVE_OARG from
ARG. */
auto set_oarg = [&] (gdb::unique_xmalloc_ptr<char> arg)
{
if (completion_info != NULL)
{
/* We do this here because the set of options that take
arguments matches the set of explicit location
options. */
completion_info->saw_explicit_location_option = true;
}
oarg = std::move (arg);
have_oarg = oarg != NULL;
need_oarg = true;
};
if (strncmp (opt.get (), "-source", len) == 0)
{
set_oarg (explicit_location_lex_one (argp, language,
completion_info));
EL_EXPLICIT (location)->source_filename = oarg.release ();
}
else if (strncmp (opt.get (), "-function", len) == 0)
{
set_oarg (explicit_location_lex_one_function (argp, language,
completion_info));
EL_EXPLICIT (location)->function_name = oarg.release ();
}
else if (strncmp (opt.get (), "-qualified", len) == 0)
{
EL_EXPLICIT (location)->func_name_match_type
= symbol_name_match_type::FULL;
}
else if (strncmp (opt.get (), "-line", len) == 0)
{
set_oarg (explicit_location_lex_one (argp, language, NULL));
*argp = skip_spaces (*argp);
if (have_oarg)
{
EL_EXPLICIT (location)->line_offset
= linespec_parse_line_offset (oarg.get ());
continue;
}
}
else if (strncmp (opt.get (), "-label", len) == 0)
{
set_oarg (explicit_location_lex_one (argp, language, completion_info));
EL_EXPLICIT (location)->label_name = oarg.release ();
}
/* Only emit an "invalid argument" error for options
that look like option strings. */
else if (opt.get ()[0] == '-' && !isdigit (opt.get ()[1]))
{
if (completion_info == NULL)
error (_("invalid explicit location argument, \"%s\""), opt.get ());
}
else
{
/* End of the explicit location specification.
Stop parsing and return whatever explicit location was
parsed. */
*argp = start;
break;
}
*argp = skip_spaces (*argp);
/* It's a little lame to error after the fact, but in this
case, it provides a much better user experience to issue
the "invalid argument" error before any missing
argument error. */
if (need_oarg && !have_oarg && completion_info == NULL)
error (_("missing argument for \"%s\""), opt.get ());
}
/* One special error check: If a source filename was given
without offset, function, or label, issue an error. */
if (EL_EXPLICIT (location)->source_filename != NULL
&& EL_EXPLICIT (location)->function_name == NULL
&& EL_EXPLICIT (location)->label_name == NULL
&& (EL_EXPLICIT (location)->line_offset.sign == LINE_OFFSET_UNKNOWN)
&& completion_info == NULL)
{
error (_("Source filename requires function, label, or "
"line offset."));
}
return location;
}
