/* Line completion stuff for GDB, the GNU debugger.
- Copyright (C) 2000, 2001, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2000-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "expression.h"
#include "filenames.h" /* For DOSish file names. */
#include "language.h"
+#include "gdb_signals.h"
#include "cli/cli-decode.h"
/* readline uses the word breaks for two things:
(1) In figuring out where to point the TEXT parameter to the
rl_completion_entry_function. Since we don't use TEXT for much,
- it doesn't matter a lot what the word breaks are for this purpose, but
- it does affect how much stuff M-? lists.
+ it doesn't matter a lot what the word breaks are for this purpose,
+ but it does affect how much stuff M-? lists.
(2) If one of the matches contains a word break character, readline
will quote it. That's why we switch between
current_language->la_word_break_characters() and
gdb_completer_command_word_break_characters. I'm not sure when
- we need this behavior (perhaps for funky characters in C++ symbols?). */
+ we need this behavior (perhaps for funky characters in C++
+ symbols?). */
/* Variables which are necessary for fancy command line editing. */
/* When completing on command names, we remove '-' from the list of
word break characters, since we use it in command names. If the
readline library sees one in any of the current completion strings,
- it thinks that the string needs to be quoted and automatically supplies
- a leading quote. */
+ it thinks that the string needs to be quoted and automatically
+ supplies a leading quote. */
static char *gdb_completer_command_word_break_characters =
" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
static char *gdb_completer_file_name_break_characters = " \t\n*|\"';:?><";
#endif
-/* These are used when completing on locations, which can mix file
- names and symbol names separated by a colon. */
-static char *gdb_completer_loc_break_characters = " \t\n*|\"';:?><,";
-
-/* Characters that can be used to quote completion strings. Note that we
- can't include '"' because the gdb C parser treats such quoted sequences
- as strings. */
+/* Characters that can be used to quote completion strings. Note that
+ we can't include '"' because the gdb C parser treats such quoted
+ sequences as strings. */
static char *gdb_completer_quote_characters = "'";
\f
/* Accessor for some completer data that may interest other files. */
char *
readline_line_completion_function (const char *text, int matches)
{
- return line_completion_function (text, matches, rl_line_buffer, rl_point);
+ return line_completion_function (text, matches,
+ rl_line_buffer, rl_point);
}
-/* This can be used for functions which don't want to complete on symbols
- but don't want to complete on anything else either. */
-char **
-noop_completer (struct cmd_list_element *ignore, char *text, char *prefix)
+/* This can be used for functions which don't want to complete on
+ symbols but don't want to complete on anything else either. */
+VEC (char_ptr) *
+noop_completer (struct cmd_list_element *ignore,
+ const char *text, const char *prefix)
{
return NULL;
}
/* Complete on filenames. */
-char **
-filename_completer (struct cmd_list_element *ignore, char *text, char *word)
+VEC (char_ptr) *
+filename_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
{
int subsequent_name;
- char **return_val;
- int return_val_used;
- int return_val_alloced;
-
- return_val_used = 0;
- /* Small for testing. */
- return_val_alloced = 1;
- return_val = (char **) xmalloc (return_val_alloced * sizeof (char *));
+ VEC (char_ptr) *return_val = NULL;
subsequent_name = 0;
while (1)
{
char *p, *q;
+
p = rl_filename_completion_function (text, subsequent_name);
- if (return_val_used >= return_val_alloced)
- {
- return_val_alloced *= 2;
- return_val =
- (char **) xrealloc (return_val,
- return_val_alloced * sizeof (char *));
- }
if (p == NULL)
- {
- return_val[return_val_used++] = p;
- break;
- }
+ break;
/* We need to set subsequent_name to a non-zero value before the
- continue line below, because otherwise, if the first file seen
- by GDB is a backup file whose name ends in a `~', we will loop
- indefinitely. */
+ continue line below, because otherwise, if the first file
+ seen by GDB is a backup file whose name ends in a `~', we
+ will loop indefinitely. */
subsequent_name = 1;
- /* Like emacs, don't complete on old versions. Especially useful
- in the "source" command. */
+ /* Like emacs, don't complete on old versions. Especially
+ useful in the "source" command. */
if (p[strlen (p) - 1] == '~')
{
xfree (p);
if (word == text)
/* Return exactly p. */
- return_val[return_val_used++] = p;
+ q = p;
else if (word > text)
{
/* Return some portion of p. */
q = xmalloc (strlen (p) + 5);
strcpy (q, p + (word - text));
- return_val[return_val_used++] = q;
xfree (p);
}
else
strncpy (q, word, text - word);
q[text - word] = '\0';
strcat (q, p);
- return_val[return_val_used++] = q;
xfree (p);
}
+ VEC_safe_push (char_ptr, return_val, q);
}
#if 0
- /* There is no way to do this just long enough to affect quote inserting
- without also affecting the next completion. This should be fixed in
- readline. FIXME. */
+ /* There is no way to do this just long enough to affect quote
+ inserting without also affecting the next completion. This
+ should be fixed in readline. FIXME. */
/* Ensure that readline does the right thing
with respect to inserting quotes. */
rl_completer_word_break_characters = "";
or
symbol+offset
- This is intended to be used in commands that set breakpoints etc. */
-char **
-location_completer (struct cmd_list_element *ignore, char *text, char *word)
+ 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)
{
- int n_syms = 0, n_files = 0;
- char ** fn_list = NULL;
- char ** list = NULL;
- char *p;
+ int n_syms, n_files, ix;
+ VEC (char_ptr) *fn_list = NULL;
+ VEC (char_ptr) *list = NULL;
+ const char *p;
int quote_found = 0;
int quoted = *text == '\'' || *text == '"';
int quote_char = '\0';
- char *colon = NULL;
+ const char *colon = NULL;
char *file_to_match = NULL;
- char *symbol_start = text;
- char *orig_text = text;
+ const char *symbol_start = text;
+ const char *orig_text = text;
size_t text_len;
- /* Do we have an unquoted colon, as in "break foo.c::bar"? */
+ /* Do we have an unquoted colon, as in "break foo.c:bar"? */
for (p = text; *p != '\0'; ++p)
{
if (*p == '\\' && p[1] == '\'')
fn_list = make_source_files_completion_list (text, text);
}
- /* How many completions do we have in both lists? */
- if (fn_list)
- for ( ; fn_list[n_files]; n_files++)
- ;
- if (list)
- for ( ; list[n_syms]; n_syms++)
- ;
+ n_syms = VEC_length (char_ptr, list);
+ n_files = VEC_length (char_ptr, fn_list);
+
+ /* Catenate fn_list[] onto the end of list[]. */
+ if (!n_syms)
+ {
+ VEC_free (char_ptr, list); /* Paranoia. */
+ list = fn_list;
+ fn_list = NULL;
+ }
+ else
+ {
+ char *fn;
+
+ for (ix = 0; VEC_iterate (char_ptr, fn_list, ix, fn); ++ix)
+ VEC_safe_push (char_ptr, list, fn);
+ VEC_free (char_ptr, fn_list);
+ }
- /* Make list[] large enough to hold both lists, then catenate
- fn_list[] onto the end of list[]. */
if (n_syms && n_files)
{
- list = xrealloc (list, (n_syms + n_files + 1) * sizeof (char *));
- memcpy (list + n_syms, fn_list, (n_files + 1) * sizeof (char *));
- xfree (fn_list);
+ /* Nothing. */
}
else if (n_files)
{
+ char *fn;
+
/* If we only have file names as possible completion, we should
bring them in sync with what rl_complete expects. The
problem is that if the user types "break /foo/b TAB", and the
completion, because rl_complete will prepend "/foo/" to each
candidate completion. The loop below removes that leading
part. */
- for (n_files = 0; fn_list[n_files]; n_files++)
+ for (ix = 0; VEC_iterate (char_ptr, list, ix, fn); ++ix)
{
- memmove (fn_list[n_files], fn_list[n_files] + (word - text),
- strlen (fn_list[n_files]) + 1 - (word - text));
+ memmove (fn, fn + (word - text),
+ strlen (fn) + 1 - (word - text));
}
- /* Return just the file-name list as the result. */
- list = fn_list;
}
else if (!n_syms)
{
/* No completions at all. As the final resort, try completing
on the entire text as a symbol. */
list = make_symbol_completion_list (orig_text, word);
- xfree (fn_list);
}
- else
- xfree (fn_list);
return list;
}
-/* Helper for expression_completer which recursively counts the number
- of named fields and methods in a structure or union type. */
-static int
-count_struct_fields (struct type *type)
-{
- int i, result = 0;
-
- CHECK_TYPEDEF (type);
- for (i = 0; i < TYPE_NFIELDS (type); ++i)
- {
- if (i < TYPE_N_BASECLASSES (type))
- result += count_struct_fields (TYPE_BASECLASS (type, i));
- else if (TYPE_FIELD_NAME (type, i))
- ++result;
- }
-
- for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i)
- {
- if (TYPE_FN_FIELDLIST_NAME (type, i))
- ++result;
- }
-
- return result;
-}
-
/* Helper for expression_completer which recursively adds field and
method names from TYPE, a struct or union type, to the array
- OUTPUT. This function assumes that OUTPUT is correctly-sized. */
+ OUTPUT. */
static void
-add_struct_fields (struct type *type, int *nextp, char **output,
+add_struct_fields (struct type *type, VEC (char_ptr) **output,
char *fieldname, int namelen)
{
int i;
int computed_type_name = 0;
- char *type_name = NULL;
+ const char *type_name = NULL;
CHECK_TYPEDEF (type);
for (i = 0; i < TYPE_NFIELDS (type); ++i)
{
if (i < TYPE_N_BASECLASSES (type))
- add_struct_fields (TYPE_BASECLASS (type, i), nextp, output,
- fieldname, namelen);
- else if (TYPE_FIELD_NAME (type, i)
- && ! strncmp (TYPE_FIELD_NAME (type, i), fieldname, namelen))
+ add_struct_fields (TYPE_BASECLASS (type, i),
+ output, fieldname, namelen);
+ else if (TYPE_FIELD_NAME (type, i))
{
- output[*nextp] = xstrdup (TYPE_FIELD_NAME (type, i));
- ++*nextp;
+ if (TYPE_FIELD_NAME (type, i)[0] != '\0')
+ {
+ if (! strncmp (TYPE_FIELD_NAME (type, i),
+ fieldname, namelen))
+ VEC_safe_push (char_ptr, *output,
+ xstrdup (TYPE_FIELD_NAME (type, i)));
+ }
+ else if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_UNION)
+ {
+ /* Recurse into anonymous unions. */
+ add_struct_fields (TYPE_FIELD_TYPE (type, i),
+ output, fieldname, namelen);
+ }
}
}
for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i)
{
- char *name = TYPE_FN_FIELDLIST_NAME (type, i);
+ const char *name = TYPE_FN_FIELDLIST_NAME (type, i);
+
if (name && ! strncmp (name, fieldname, namelen))
{
if (!computed_type_name)
computed_type_name = 1;
}
/* Omit constructors from the completion list. */
- if (type_name && strcmp (type_name, name))
- {
- output[*nextp] = xstrdup (name);
- ++*nextp;
- }
+ if (!type_name || strcmp (type_name, name))
+ VEC_safe_push (char_ptr, *output, xstrdup (name));
}
}
}
/* Complete on expressions. Often this means completing on symbol
names, but some language parsers also have support for completing
field names. */
-char **
-expression_completer (struct cmd_list_element *ignore, char *text, char *word)
+VEC (char_ptr) *
+expression_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
{
- struct type *type;
- char *fieldname, *p;
+ struct type *type = NULL;
+ char *fieldname;
+ const char *p;
+ volatile struct gdb_exception except;
+ enum type_code code = TYPE_CODE_UNDEF;
/* Perform a tentative parse of the expression, to see whether a
field completion is required. */
fieldname = NULL;
- type = parse_field_expression (text, &fieldname);
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ type = parse_expression_for_completion (text, &fieldname, &code);
+ }
+ if (except.reason < 0)
+ return NULL;
if (fieldname && type)
{
for (;;)
if (TYPE_CODE (type) == TYPE_CODE_UNION
|| TYPE_CODE (type) == TYPE_CODE_STRUCT)
{
- int alloc = count_struct_fields (type);
int flen = strlen (fieldname);
- int out = 0;
- char **result = (char **) xmalloc ((alloc + 1) * sizeof (char *));
+ VEC (char_ptr) *result = NULL;
- add_struct_fields (type, &out, result, fieldname, flen);
- result[out] = NULL;
+ add_struct_fields (type, &result, fieldname, flen);
xfree (fieldname);
return result;
}
}
+ else if (fieldname && code != TYPE_CODE_UNDEF)
+ {
+ VEC (char_ptr) *result;
+ struct cleanup *cleanup = make_cleanup (xfree, fieldname);
+
+ result = make_symbol_completion_type (fieldname, fieldname, code);
+ do_cleanups (cleanup);
+ return result;
+ }
xfree (fieldname);
/* Commands which complete on locations want to see the entire
p--)
;
- /* Not ideal but it is what we used to do before... */
+ /* Not ideal but it is what we used to do before... */
return location_completer (ignore, p, word);
}
-/* Here are some useful test cases for completion. FIXME: These should
- be put in the test suite. They should be tested with both M-? and TAB.
+/* See definition in completer.h. */
+
+void
+set_gdb_completion_word_break_characters (completer_ftype *fn)
+{
+ /* So far we are only interested in differentiating filename
+ completers from everything else. */
+ if (fn == filename_completer)
+ rl_completer_word_break_characters
+ = gdb_completer_file_name_break_characters;
+ else
+ rl_completer_word_break_characters
+ = gdb_completer_command_word_break_characters;
+}
+
+/* Here are some useful test cases for completion. FIXME: These
+ should be put in the test suite. They should be tested with both
+ M-? and TAB.
"show output-" "radix"
"show output" "-radix"
"file ../gdb.stabs/we" "ird" (needs to not break word at slash)
*/
-/* Generate completions all at once. Returns a NULL-terminated array
- of strings. Both the array and each element are allocated with
- xmalloc. It can also return NULL if there are no completions.
+typedef enum
+{
+ handle_brkchars,
+ handle_completions,
+ handle_help
+}
+complete_line_internal_reason;
+
+
+/* Internal function used to handle completions.
+
TEXT is the caller's idea of the "word" we are looking at.
- LINE_BUFFER is available to be looked at; it contains the entire text
- of the line. POINT is the offset in that line of the cursor. You
- should pretend that the line ends at POINT.
-
- FOR_HELP is true when completing a 'help' command. In this case,
+ LINE_BUFFER is available to be looked at; it contains the entire
+ text of the line. POINT is the offset in that line of the cursor.
+ You should pretend that the line ends at POINT.
+
+ REASON is of type complete_line_internal_reason.
+
+ If REASON is handle_brkchars:
+ Preliminary phase, called by gdb_completion_word_break_characters
+ function, is used to determine the correct set of chars that are
+ word delimiters depending on the current command in line_buffer.
+ No completion list should be generated; the return value should be
+ NULL. This is checked by an assertion in that function.
+
+ If REASON is handle_completions:
+ Main phase, called by complete_line function, is used to get the list
+ of posible completions.
+
+ If REASON is handle_help:
+ Special case when completing a 'help' command. In this case,
once sub-command completions are exhausted, we simply return NULL.
- When FOR_HELP is false, we will call a sub-command's completion
- function. */
+ */
-static char **
-complete_line_internal (const char *text, char *line_buffer, int point,
- int for_help)
+static VEC (char_ptr) *
+complete_line_internal (const char *text,
+ const char *line_buffer, int point,
+ complete_line_internal_reason reason)
{
- char **list = NULL;
- char *tmp_command, *p;
+ VEC (char_ptr) *list = NULL;
+ char *tmp_command;
+ const char *p;
+ int ignore_help_classes;
/* Pointer within tmp_command which corresponds to text. */
char *word;
struct cmd_list_element *c, *result_list;
- /* Choose the default set of word break characters to break completions.
- If we later find out that we are doing completions on command strings
- (as opposed to strings supplied by the individual command completer
- functions, which can be any string) then we will switch to the
- special word break set for command strings, which leaves out the
- '-' character used in some commands. */
-
+ /* Choose the default set of word break characters to break
+ completions. If we later find out that we are doing completions
+ on command strings (as opposed to strings supplied by the
+ individual command completer functions, which can be any string)
+ then we will switch to the special word break set for command
+ strings, which leaves out the '-' character used in some
+ commands. */
rl_completer_word_break_characters =
current_language->la_word_break_characters();
- /* Decide whether to complete on a list of gdb commands or on symbols. */
+ /* Decide whether to complete on a list of gdb commands or on
+ symbols. */
tmp_command = (char *) alloca (point + 1);
p = tmp_command;
+ /* The help command should complete help aliases. */
+ ignore_help_classes = reason != handle_help;
+
strncpy (tmp_command, line_buffer, point);
tmp_command[point] = '\0';
/* Since text always contains some number of characters leading up
{
/* An empty line we want to consider ambiguous; that is, it
could be any command. */
- c = (struct cmd_list_element *) -1;
+ c = CMD_LIST_AMBIGUOUS;
result_list = 0;
}
else
{
- c = lookup_cmd_1 (&p, cmdlist, &result_list, 1);
+ c = lookup_cmd_1 (&p, cmdlist, &result_list, ignore_help_classes);
}
/* Move p up to the next interesting thing. */
possible completions. */
list = NULL;
}
- else if (c == (struct cmd_list_element *) -1)
+ else if (c == CMD_LIST_AMBIGUOUS)
{
- char *q;
+ const char *q;
/* lookup_cmd_1 advances p up to the first ambiguous thing, but
doesn't advance over that thing itself. Do so now. */
This we can deal with. */
if (result_list)
{
- list = complete_on_cmdlist (*result_list->prefixlist, p,
- word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (*result_list->prefixlist, p,
+ word, ignore_help_classes);
}
else
{
- list = complete_on_cmdlist (cmdlist, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (cmdlist, p, word,
+ ignore_help_classes);
}
/* Ensure that readline does the right thing with respect to
inserting quotes. */
if (p == tmp_command + point)
{
- /* There is no non-whitespace in the line beyond the command. */
+ /* There is no non-whitespace in the line beyond the
+ command. */
if (p[-1] == ' ' || p[-1] == '\t')
{
- /* The command is followed by whitespace; we need to complete
- on whatever comes after command. */
+ /* The command is followed by whitespace; we need to
+ complete on whatever comes after command. */
if (c->prefixlist)
{
/* It is a prefix command; what comes after it is
a subcommand (e.g. "info "). */
- list = complete_on_cmdlist (*c->prefixlist, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (*c->prefixlist, p, word,
+ ignore_help_classes);
/* Ensure that readline does the right thing
with respect to inserting quotes. */
rl_completer_word_break_characters =
gdb_completer_command_word_break_characters;
}
- else if (for_help)
+ else if (reason == handle_help)
list = NULL;
else if (c->enums)
{
- list = complete_on_enum (c->enums, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_enum (c->enums, p, word);
rl_completer_word_break_characters =
gdb_completer_command_word_break_characters;
}
p--)
;
}
- list = (*c->completer) (c, p, word);
+ if (reason == handle_brkchars
+ && c->completer_handle_brkchars != NULL)
+ (*c->completer_handle_brkchars) (c, p, word);
+ if (reason != handle_brkchars && c->completer != NULL)
+ list = (*c->completer) (c, p, word);
}
}
else
{
/* The command is not followed by whitespace; we need to
- complete on the command itself. e.g. "p" which is a
+ complete on the command itself, e.g. "p" which is a
command itself but also can complete to "print", "ptype"
etc. */
- char *q;
+ const char *q;
/* Find the command we are completing on. */
q = p;
break;
}
- list = complete_on_cmdlist (result_list, q, word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (result_list, q, word,
+ ignore_help_classes);
/* Ensure that readline does the right thing
with respect to inserting quotes. */
gdb_completer_command_word_break_characters;
}
}
- else if (for_help)
+ else if (reason == handle_help)
list = NULL;
else
{
}
else if (c->enums)
{
- list = complete_on_enum (c->enums, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_enum (c->enums, p, word);
}
else
{
of file-name completion. */
for (p = word;
p > tmp_command
- && strchr (gdb_completer_file_name_break_characters, p[-1]) == NULL;
+ && strchr (gdb_completer_file_name_break_characters,
+ p[-1]) == NULL;
p--)
;
rl_completer_word_break_characters =
p--)
;
}
- list = (*c->completer) (c, p, word);
+ if (reason == handle_brkchars
+ && c->completer_handle_brkchars != NULL)
+ (*c->completer_handle_brkchars) (c, p, word);
+ if (reason != handle_brkchars && c->completer != NULL)
+ list = (*c->completer) (c, p, word);
}
}
}
return list;
}
+/* Generate completions all at once. Returns a vector of strings.
+ Each element is allocated with xmalloc. It can also return NULL if
+ there are no completions.
+
+ TEXT is the caller's idea of the "word" we are looking at.
+
+ LINE_BUFFER is available to be looked at; it contains the entire
+ text of the line.
-/* Like complete_line_internal, but always passes 0 for FOR_HELP. */
+ POINT is the offset in that line of the cursor. You
+ should pretend that the line ends at POINT. */
-char **
-complete_line (const char *text, char *line_buffer, int point)
+VEC (char_ptr) *
+complete_line (const char *text, const char *line_buffer, int point)
{
- return complete_line_internal (text, line_buffer, point, 0);
+ return complete_line_internal (text, line_buffer,
+ point, handle_completions);
}
/* Complete on command names. Used by "help". */
-char **
-command_completer (struct cmd_list_element *ignore, char *text, char *word)
+VEC (char_ptr) *
+command_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
{
- return complete_line_internal (word, text, strlen (text), 1);
+ return complete_line_internal (word, text,
+ strlen (text), handle_help);
}
-/* Generate completions one by one for the completer. Each time we are
- called return another potential completion to the caller.
- line_completion just completes on commands or passes the buck to the
- command's completer function, the stuff specific to symbol completion
- is in make_symbol_completion_list.
+/* Complete on signals. */
+
+VEC (char_ptr) *
+signal_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
+{
+ VEC (char_ptr) *return_val = NULL;
+ size_t len = strlen (word);
+ enum gdb_signal signum;
+ const char *signame;
+
+ for (signum = GDB_SIGNAL_FIRST; signum != GDB_SIGNAL_LAST; ++signum)
+ {
+ /* Can't handle this, so skip it. */
+ if (signum == GDB_SIGNAL_0)
+ continue;
+
+ signame = gdb_signal_to_name (signum);
+
+ /* Ignore the unknown signal case. */
+ if (!signame || strcmp (signame, "?") == 0)
+ continue;
+
+ if (strncasecmp (signame, word, len) == 0)
+ VEC_safe_push (char_ptr, return_val, xstrdup (signame));
+ }
+
+ return return_val;
+}
+
+/* Get the list of chars that are considered as word breaks
+ for the current command. */
+
+char *
+gdb_completion_word_break_characters (void)
+{
+ VEC (char_ptr) *list;
+
+ list = complete_line_internal (rl_line_buffer, rl_line_buffer, rl_point,
+ handle_brkchars);
+ gdb_assert (list == NULL);
+ return rl_completer_word_break_characters;
+}
+
+/* Generate completions one by one for the completer. Each time we
+ are called return another potential completion to the caller.
+ line_completion just completes on commands or passes the buck to
+ the command's completer function, the stuff specific to symbol
+ completion is in make_symbol_completion_list.
TEXT is the caller's idea of the "word" we are looking at.
- MATCHES is the number of matches that have currently been collected from
- calling this completion function. When zero, then we need to initialize,
- otherwise the initialization has already taken place and we can just
- return the next potential completion string.
+ MATCHES is the number of matches that have currently been collected
+ from calling this completion function. When zero, then we need to
+ initialize, otherwise the initialization has already taken place
+ and we can just return the next potential completion string.
- LINE_BUFFER is available to be looked at; it contains the entire text
- of the line. POINT is the offset in that line of the cursor. You
- should pretend that the line ends at POINT.
+ LINE_BUFFER is available to be looked at; it contains the entire
+ text of the line. POINT is the offset in that line of the cursor.
+ You should pretend that the line ends at POINT.
- Returns NULL if there are no more completions, else a pointer to a string
- which is a possible completion, it is the caller's responsibility to
- free the string. */
+ Returns NULL if there are no more completions, else a pointer to a
+ string which is a possible completion, it is the caller's
+ responsibility to free the string. */
static char *
line_completion_function (const char *text, int matches,
char *line_buffer, int point)
{
- static char **list = (char **) NULL; /* Cache of completions. */
+ static VEC (char_ptr) *list = NULL; /* Cache of completions. */
static int index; /* Next cached completion. */
char *output = NULL;
if (matches == 0)
{
- /* The caller is beginning to accumulate a new set of completions, so
- we need to find all of them now, and cache them for returning one at
- a time on future calls. */
+ /* The caller is beginning to accumulate a new set of
+ completions, so we need to find all of them now, and cache
+ them for returning one at a time on future calls. */
if (list)
{
- /* Free the storage used by LIST, but not by the strings inside.
- This is because rl_complete_internal () frees the strings.
- As complete_line may abort by calling `error' clear LIST now. */
- xfree (list);
- list = NULL;
+ /* Free the storage used by LIST, but not by the strings
+ inside. This is because rl_complete_internal () frees
+ the strings. As complete_line may abort by calling
+ `error' clear LIST now. */
+ VEC_free (char_ptr, list);
}
index = 0;
list = complete_line (text, line_buffer, point);
}
- /* If we found a list of potential completions during initialization then
- dole them out one at a time. The vector of completions is NULL
- terminated, so after returning the last one, return NULL (and continue
- to do so) each time we are called after that, until a new list is
- available. */
+ /* If we found a list of potential completions during initialization
+ then dole them out one at a time. After returning the last one,
+ return NULL (and continue to do so) each time we are called after
+ that, until a new list is available. */
if (list)
{
- output = list[index];
- if (output)
+ if (index < VEC_length (char_ptr, list))
{
+ output = VEC_index (char_ptr, list, index);
index++;
}
}
/* Can't do this because readline hasn't yet checked the word breaks
for figuring out whether to insert a quote. */
if (output == NULL)
- /* Make sure the word break characters are set back to normal for the
- next time that readline tries to complete something. */
+ /* Make sure the word break characters are set back to normal for
+ the next time that readline tries to complete something. */
rl_completer_word_break_characters =
current_language->la_word_break_characters();
#endif
}
/* Skip over the possibly quoted word STR (as defined by the quote
- characters QUOTECHARS and the the word break characters
- BREAKCHARS). Returns pointer to the location after the "word". If
- either QUOTECHARS or BREAKCHARS is NULL, use the same values used
- by the completer. */
-
-char *
-skip_quoted_chars (char *str, char *quotechars, char *breakchars)
+ characters QUOTECHARS and the word break characters BREAKCHARS).
+ Returns pointer to the location after the "word". If either
+ QUOTECHARS or BREAKCHARS is NULL, use the same values used by the
+ completer. */
+
+const char *
+skip_quoted_chars (const char *str, const char *quotechars,
+ const char *breakchars)
{
char quote_char = '\0';
- char *scan;
+ const char *scan;
if (quotechars == NULL)
quotechars = gdb_completer_quote_characters;
}
else if (strchr (quotechars, *scan))
{
- /* Found start of a quoted string. */
+ /* Found start of a quoted string. */
quote_char = *scan;
}
else if (strchr (breakchars, *scan))
characters and word break characters used by the completer).
Returns pointer to the location after the "word". */
-char *
-skip_quoted (char *str)
+const char *
+skip_quoted (const char *str)
{
return skip_quoted_chars (str, NULL, NULL);
}
projects / deliverable / binutils-gdb.git / blobdiff