/* Line completion stuff for GDB, the GNU debugger.
- Copyright (C) 2000-2015 Free Software Foundation, Inc.
+ Copyright (C) 2000-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "reggroups.h"
#include "user-regs.h"
#include "arch-utils.h"
+#include "location.h"
#include "cli/cli-decode.h"
#include "completer.h"
+/* An enumeration of the various things a user might
+ attempt to complete for a location. */
+
+enum explicit_location_match_type
+{
+ /* The filename of a source file. */
+ MATCH_SOURCE,
+
+ /* The name of a function or method. */
+ MATCH_FUNCTION,
+
+ /* The name of a label. */
+ MATCH_LABEL
+};
+
/* Prototypes for local functions. */
static
char *line_completion_function (const char *text, int matches,
else if (word > text)
{
/* Return some portion of p. */
- q = xmalloc (strlen (p) + 5);
+ q = (char *) xmalloc (strlen (p) + 5);
strcpy (q, p + (word - text));
xfree (p);
}
else
{
/* Return some of TEXT plus p. */
- q = xmalloc (strlen (p) + (text - word) + 5);
+ q = (char *) xmalloc (strlen (p) + (text - word) + 5);
strncpy (q, word, text - word);
q[text - word] = '\0';
strcat (q, p);
return return_val;
}
-/* Complete on locations, which might be of two possible forms:
+/* Complete on linespecs, which might be of two possible forms:
file:line
or
This is intended to be used in commands that set breakpoints
etc. */
-VEC (char_ptr) *
-location_completer (struct cmd_list_element *ignore,
- const char *text, const char *word)
+static VEC (char_ptr) *
+linespec_location_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
{
int n_syms, n_files, ix;
VEC (char_ptr) *fn_list = NULL;
return list;
}
+/* A helper function to collect explicit location matches for the given
+ LOCATION, which is attempting to match on WORD. */
+
+static VEC (char_ptr) *
+collect_explicit_location_matches (struct event_location *location,
+ enum explicit_location_match_type what,
+ const char *word)
+{
+ VEC (char_ptr) *matches = NULL;
+ const struct explicit_location *explicit_loc
+ = get_explicit_location (location);
+
+ switch (what)
+ {
+ case MATCH_SOURCE:
+ {
+ const char *text = (explicit_loc->source_filename == NULL
+ ? "" : explicit_loc->source_filename);
+
+ matches = make_source_files_completion_list (text, word);
+ }
+ break;
+
+ case MATCH_FUNCTION:
+ {
+ const char *text = (explicit_loc->function_name == NULL
+ ? "" : explicit_loc->function_name);
+
+ if (explicit_loc->source_filename != NULL)
+ {
+ const char *filename = explicit_loc->source_filename;
+
+ matches = make_file_symbol_completion_list (text, word, filename);
+ }
+ else
+ matches = make_symbol_completion_list (text, word);
+ }
+ break;
+
+ case MATCH_LABEL:
+ /* Not supported. */
+ break;
+
+ default:
+ gdb_assert_not_reached ("unhandled explicit_location_match_type");
+ }
+
+ return matches;
+}
+
+/* A convenience macro to (safely) back up P to the previous word. */
+
+static const char *
+backup_text_ptr (const char *p, const char *text)
+{
+ while (p > text && isspace (*p))
+ --p;
+ for (; p > text && !isspace (p[-1]); --p)
+ ;
+
+ return p;
+}
+
+/* A completer function for explicit locations. This function
+ completes both options ("-source", "-line", etc) and values. */
+
+static VEC (char_ptr) *
+explicit_location_completer (struct cmd_list_element *ignore,
+ struct event_location *location,
+ const char *text, const char *word)
+{
+ const char *p;
+ VEC (char_ptr) *matches = NULL;
+
+ /* Find the beginning of the word. This is necessary because
+ we need to know if we are completing an option name or value. We
+ don't get the leading '-' from the completer. */
+ p = backup_text_ptr (word, text);
+
+ if (*p == '-')
+ {
+ /* Completing on option name. */
+ static const char *const keywords[] =
+ {
+ "source",
+ "function",
+ "line",
+ "label",
+ NULL
+ };
+
+ /* Skip over the '-'. */
+ ++p;
+
+ return complete_on_enum (keywords, p, p);
+ }
+ else
+ {
+ /* Completing on value (or unknown). Get the previous word to see what
+ the user is completing on. */
+ size_t len, offset;
+ const char *new_word, *end;
+ enum explicit_location_match_type what;
+ struct explicit_location *explicit_loc
+ = get_explicit_location (location);
+
+ /* Backup P to the previous word, which should be the option
+ the user is attempting to complete. */
+ offset = word - p;
+ end = --p;
+ p = backup_text_ptr (p, text);
+ len = end - p;
+
+ if (strncmp (p, "-source", len) == 0)
+ {
+ what = MATCH_SOURCE;
+ new_word = explicit_loc->source_filename + offset;
+ }
+ else if (strncmp (p, "-function", len) == 0)
+ {
+ what = MATCH_FUNCTION;
+ new_word = explicit_loc->function_name + offset;
+ }
+ else if (strncmp (p, "-label", len) == 0)
+ {
+ what = MATCH_LABEL;
+ new_word = explicit_loc->label_name + offset;
+ }
+ else
+ {
+ /* The user isn't completing on any valid option name,
+ e.g., "break -source foo.c [tab]". */
+ return NULL;
+ }
+
+ /* If the user hasn't entered a search expression, e.g.,
+ "break -function <TAB><TAB>", new_word will be NULL, but
+ search routines require non-NULL search words. */
+ if (new_word == NULL)
+ new_word = "";
+
+ /* Now gather matches */
+ matches = collect_explicit_location_matches (location, what, new_word);
+ }
+
+ return matches;
+}
+
+/* A completer for locations. */
+
+VEC (char_ptr) *
+location_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
+{
+ VEC (char_ptr) *matches = NULL;
+ const char *copy = text;
+ struct event_location *location;
+
+ location = string_to_explicit_location (©, current_language, 1);
+ if (location != NULL)
+ {
+ struct cleanup *cleanup;
+
+ cleanup = make_cleanup_delete_event_location (location);
+ matches = explicit_location_completer (ignore, location, text, word);
+ do_cleanups (cleanup);
+ }
+ else
+ {
+ /* This is an address or linespec location.
+ Right now both of these are handled by the (old) linespec
+ completer. */
+ matches = linespec_location_completer (ignore, text, word);
+ }
+
+ return matches;
+}
+
/* Helper for expression_completer which recursively adds field and
method names from TYPE, a struct or union type, to the array
OUTPUT. */
rl_completer_word_break_characters =
gdb_completer_file_name_break_characters;
}
- else if (c->completer == location_completer)
- {
- /* Commands which complete on locations want to
- see the entire argument. */
- for (p = word;
- p > tmp_command
- && p[-1] != ' ' && p[-1] != '\t';
- p--)
- ;
- }
if (reason == handle_brkchars
&& c->completer_handle_brkchars != NULL)
(*c->completer_handle_brkchars) (c, p, word);
rl_completer_word_break_characters =
gdb_completer_file_name_break_characters;
}
- else if (c->completer == location_completer)
- {
- for (p = word;
- p > tmp_command
- && p[-1] != ' ' && p[-1] != '\t';
- p--)
- ;
- }
if (reason == handle_brkchars
&& c->completer_handle_brkchars != NULL)
(*c->completer_handle_brkchars) (c, p, word);
static void
free_completion_tracker (void *p)
{
- completion_tracker_t *tracker_ptr = p;
+ completion_tracker_t *tracker_ptr = (completion_tracker_t *) p;
htab_delete (*tracker_ptr);
*tracker_ptr = NULL;
/* Bit-flags for selecting what the register and/or register-group
completer should complete on. */
-enum reg_completer_targets
+enum reg_completer_target
{
complete_register_names = 0x1,
complete_reggroup_names = 0x2
};
+DEF_ENUM_FLAGS_TYPE (enum reg_completer_target, reg_completer_targets);
/* Complete register names and/or reggroup names based on the value passed
in TARGETS. At least one bit in TARGETS must be set. */
static VEC (char_ptr) *
reg_or_group_completer_1 (struct cmd_list_element *ignore,
const char *text, const char *word,
- enum reg_completer_targets targets)
+ reg_completer_targets targets)
{
VEC (char_ptr) *result = NULL;
size_t len = strlen (word);
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