/* Line completion stuff for GDB, the GNU debugger.
- Copyright (C) 2000-2020 Free Software Foundation, Inc.
+ Copyright (C) 2000-2022 Free Software Foundation, Inc.
This file is part of GDB.
#include <algorithm>
#include "linespec.h"
#include "cli/cli-decode.h"
-#include "cli/cli-style.h"
/* FIXME: This is needed because of lookup_cmd_1 (). We should be
calling a hook instead so we eliminate the CLI dependency. */
return htab_hash_string (m_name.get ());
}
- /* A static function that can be passed to the htab hash system to be
- used as a callback that deletes an item from the hash. */
- static void deleter (void *arg)
- {
- completion_hash_entry *entry = (completion_hash_entry *) arg;
- delete entry;
- }
-
private:
/* The symbol name stored in this hash entry. */
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
+ current_language->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?). */
will loop indefinitely. */
subsequent_name = 1;
/* Like emacs, don't complete on old versions. Especially
- useful in the "source" command. */
+ useful in the "source" command. */
const char *p = p_rl.get ();
if (p[strlen (p) - 1] == '~')
continue;
(gdb_completer_file_name_break_characters);
}
-/* Possible values for the found_quote flags word used by the completion
- functions. It says what kind of (shell-like) quoting we found anywhere
- in the line. */
-#define RL_QF_SINGLE_QUOTE 0x01
-#define RL_QF_DOUBLE_QUOTE 0x02
-#define RL_QF_BACKSLASH 0x04
-#define RL_QF_OTHER_QUOTE 0x08
-
/* Find the bounds of the current word for completion purposes, and
return a pointer to the end of the word. This mimics (and is a
modified version of) readline's _rl_find_completion_word internal
int *qc, int *dp,
const char *line_buffer)
{
- int scan, end, found_quote, delimiter, pass_next, isbrk;
+ int scan, end, delimiter, pass_next, isbrk;
char quote_char;
const char *brkchars;
int point = strlen (line_buffer);
}
end = point;
- found_quote = delimiter = 0;
+ delimiter = 0;
quote_char = '\0';
brkchars = info->word_break_characters;
/* We have a list of characters which can be used in pairs to
quote substrings for the completer. Try to find the start of
an unclosed quoted substring. */
- /* FOUND_QUOTE is set so we know what kind of quotes we
- found. */
for (scan = pass_next = 0;
scan < end;
scan++)
if (quote_char != '\'' && line_buffer[scan] == '\\')
{
pass_next = 1;
- found_quote |= RL_QF_BACKSLASH;
continue;
}
/* Found start of a quoted substring. */
quote_char = line_buffer[scan];
point = scan + 1;
- /* Shell-like quoting conventions. */
- if (quote_char == '\'')
- found_quote |= RL_QF_SINGLE_QUOTE;
- else if (quote_char == '"')
- found_quote |= RL_QF_DOUBLE_QUOTE;
- else
- found_quote |= RL_QF_OTHER_QUOTE;
}
}
}
advance_to_expression_complete_word_point (completion_tracker &tracker,
const char *text)
{
- const char *brk_chars = current_language->la_word_break_characters ();
+ const char *brk_chars = current_language->word_break_characters ();
return advance_to_completion_word (tracker, brk_chars, text);
}
colon = p;
symbol_start = p + 1;
}
- else if (strchr (current_language->la_word_break_characters(), *p))
+ else if (strchr (current_language->word_break_characters (), *p))
symbol_start = p + 1;
}
int keyword = skip_keyword (tracker, explicit_options, &text);
if (keyword == -1)
- complete_on_enum (tracker, explicit_options, text, text);
+ {
+ complete_on_enum (tracker, explicit_options, text, text);
+ /* There are keywords that start with "-". Include them, too. */
+ complete_on_enum (tracker, linespec_keywords, text, text);
+ }
else
{
/* Completing on value. */
fieldname, namelen))
output.emplace_back (xstrdup (TYPE_FIELD_NAME (type, i)));
}
- else if (TYPE_FIELD_TYPE (type, i)->code () == TYPE_CODE_UNION)
+ else if (type->field (i).type ()->code () == TYPE_CODE_UNION)
{
/* Recurse into anonymous unions. */
- add_struct_fields (TYPE_FIELD_TYPE (type, i),
+ add_struct_fields (type->field (i).type (),
output, fieldname, namelen);
}
}
strings, which leaves out the '-' and '.' character used in some
commands. */
set_rl_completer_word_break_characters
- (current_language->la_word_break_characters());
+ (current_language->word_break_characters ());
/* Decide whether to complete on a list of gdb commands or on
symbols. */
result_list = 0;
}
else
- {
- c = lookup_cmd_1 (&p, cmdlist, &result_list, ignore_help_classes);
- }
+ c = lookup_cmd_1 (&p, cmdlist, &result_list, NULL, ignore_help_classes,
+ true);
/* Move p up to the next interesting thing. */
while (*p == ' ' || *p == '\t')
if (result_list)
{
if (reason != handle_brkchars)
- complete_on_cmdlist (*result_list->prefixlist, tracker, p,
+ complete_on_cmdlist (*result_list->subcommands, tracker, p,
word, ignore_help_classes);
}
else
{
/* The command is followed by whitespace; we need to
complete on whatever comes after command. */
- if (c->prefixlist)
+ if (c->is_prefix ())
{
/* It is a prefix command; what comes after it is
a subcommand (e.g. "info "). */
if (reason != handle_brkchars)
- complete_on_cmdlist (*c->prefixlist, tracker, p, word,
+ complete_on_cmdlist (*c->subcommands, tracker, p, word,
ignore_help_classes);
/* Ensure that readline does the right thing
{
/* There is non-whitespace beyond the command. */
- if (c->prefixlist && !c->allow_unknown)
+ if (c->is_prefix () && !c->allow_unknown)
{
/* It is an unrecognized subcommand of a prefix command,
e.g. "info adsfkdj". */
m_lowest_common_denominator_unique = false;
m_lowest_common_denominator_valid = false;
- /* A null check here allows this function to be used from the
- constructor. */
- if (m_entries_hash != NULL)
- htab_delete (m_entries_hash);
+ m_entries_hash.reset (nullptr);
/* A callback used by the hash table to compare new entries with existing
- entries. We can't use the standard streq_hash function here as the
+ entries. We can't use the standard htab_eq_string function here as the
key to our hash is just a single string, while the values we store in
the hash are a struct containing multiple strings. */
static auto entry_eq_func
return entry->hash_name ();
};
- m_entries_hash = htab_create_alloc (INITIAL_COMPLETION_HTAB_SIZE,
- entry_hash_func, entry_eq_func,
- completion_hash_entry::deleter,
- xcalloc, xfree);
+ m_entries_hash.reset
+ (htab_create_alloc (INITIAL_COMPLETION_HTAB_SIZE,
+ entry_hash_func, entry_eq_func,
+ htab_delete_entry<completion_hash_entry>,
+ xcalloc, xfree));
}
/* See completer.h. */
completion_tracker::~completion_tracker ()
{
xfree (m_lowest_common_denominator);
- htab_delete (m_entries_hash);
}
/* See completer.h. */
if (max_completions == 0)
return false;
- if (htab_elements (m_entries_hash) >= max_completions)
+ if (htab_elements (m_entries_hash.get ()) >= max_completions)
return false;
hashval_t hash = htab_hash_string (name.get ());
- slot = htab_find_slot_with_hash (m_entries_hash, name.get (), hash, INSERT);
+ slot = htab_find_slot_with_hash (m_entries_hash.get (), name.get (),
+ hash, INSERT);
if (*slot == HTAB_EMPTY_ENTRY)
{
const char *match_for_lcd_str = NULL;
completion_tracker::remove_completion (const char *name)
{
hashval_t hash = htab_hash_string (name);
- if (htab_find_slot_with_hash (m_entries_hash, name, hash, NO_INSERT)
+ if (htab_find_slot_with_hash (m_entries_hash.get (), name, hash, NO_INSERT)
!= NULL)
{
- htab_remove_elt_with_hash (m_entries_hash, name, hash);
+ htab_remove_elt_with_hash (m_entries_hash.get (), name, hash);
m_lowest_common_denominator_valid = false;
}
}
const char *text, const char *word)
{
set_rl_completer_word_break_characters
- (current_language->la_word_break_characters ());
+ (current_language->word_break_characters ());
}
/* See definition in completer.h. */
return 1;
};
- htab_traverse (m_entries_hash, visitor_func, this);
+ htab_traverse (m_entries_hash.get (), visitor_func, this);
m_lowest_common_denominator_valid = true;
}
completion_tracker::build_completion_result (const char *text,
int start, int end)
{
- size_t element_count = htab_elements (m_entries_hash);
+ size_t element_count = htab_elements (m_entries_hash.get ());
if (element_count == 0)
return {};
/* If the tracker wants to, or we already have a space at the
end of the match, tell readline to skip appending
another. */
+ char *match = match_list[0];
bool completion_suppress_append
= (suppress_append_ws ()
- || match_list[0][strlen (match_list[0]) - 1] == ' ');
+ || (match[0] != '\0'
+ && match[strlen (match) - 1] == ' '));
return completion_result (match_list, 1, completion_suppress_append);
}
};
/* Build the completion list and add a null at the end. */
- htab_traverse_noresize (m_entries_hash, func, &builder);
+ htab_traverse_noresize (m_entries_hash.get (), func, &builder);
match_list[builder.index] = NULL;
return completion_result (match_list, builder.index - 1, false);
quotechars = gdb_completer_quote_characters;
if (breakchars == NULL)
- breakchars = current_language->la_word_break_characters();
+ breakchars = current_language->word_break_characters ();
for (scan = str; *scan != '\0'; scan++)
{
else if (temp[1] == '\0')
{
for (x = temp - 1; x > pathname; x--)
- if (*x == '/')
- break;
+ if (*x == '/')
+ break;
return ((*x == '/') ? x + 1 : pathname);
}
else
return width;
}
-extern int _rl_completion_prefix_display_length;
-
/* Print TO_PRINT, one matching completion.
PREFIX_BYTES is number of common prefix bytes.
Based on readline/complete.c:fnprint. */
gdb_fnprint (const char *to_print, int prefix_bytes,
const struct match_list_displayer *displayer)
{
- int common_prefix_len, printed_len, w;
+ int printed_len, w;
const char *s;
#if defined (HANDLE_MULTIBYTE)
mbstate_t ps;
memset (&ps, 0, sizeof (mbstate_t));
#endif
- printed_len = common_prefix_len = 0;
+ printed_len = 0;
/* Don't print only the ellipsis if the common prefix is one of the
possible completions */
if (to_print[prefix_bytes] == '\0')
prefix_bytes = 0;
- ui_file_style style = completion_prefix_style.style ();
- if (!style.is_default ())
- displayer->puts (displayer, style.to_ansi ().c_str ());
-
- if (prefix_bytes && _rl_completion_prefix_display_length > 0)
+ if (prefix_bytes)
{
char ellipsis;
displayer->putch (displayer, ellipsis);
printed_len = ELLIPSIS_LEN;
}
- else if (prefix_bytes && !style.is_default ())
- {
- common_prefix_len = prefix_bytes;
- prefix_bytes = 0;
- }
-
- /* There are 3 states: the initial state (#0), when we use the
- prefix style; the difference state (#1), which lasts a single
- character; and then the suffix state (#2). */
- int state = 0;
s = to_print + prefix_bytes;
while (*s)
{
if (CTRL_CHAR (*s))
- {
- displayer->putch (displayer, '^');
- displayer->putch (displayer, UNCTRL (*s));
- printed_len += 2;
- s++;
+ {
+ displayer->putch (displayer, '^');
+ displayer->putch (displayer, UNCTRL (*s));
+ printed_len += 2;
+ s++;
#if defined (HANDLE_MULTIBYTE)
memset (&ps, 0, sizeof (mbstate_t));
#endif
- }
+ }
else if (*s == RUBOUT)
{
displayer->putch (displayer, '^');
printed_len++;
#endif
}
- if (common_prefix_len > 0 && (s - to_print) >= common_prefix_len)
- {
- if (!style.is_default ())
- displayer->puts (displayer, ui_file_style ().to_ansi ().c_str ());
-
- ++state;
- if (state == 1)
- {
- common_prefix_len = 1;
- style = completion_difference_style.style ();
- }
- else
- {
- common_prefix_len = 0;
- style = completion_suffix_style.style ();
- }
-
- if (!style.is_default ())
- displayer->puts (displayer, style.to_ansi ().c_str ());
- }
}
- if (!style.is_default ())
- displayer->puts (displayer, ui_file_style ().to_ansi ().c_str ());
-
return printed_len;
}
return displayer->width;
}
+extern int _rl_completion_prefix_display_length;
extern int _rl_print_completions_horizontally;
EXTERN_C int _rl_qsort_string_compare (const void *, const void *);
char *temp, *t;
int page_completions = displayer->height != INT_MAX && pagination_enabled;
- bool want_style = !completion_prefix_style.style ().is_default ();
-
/* Find the length of the prefix common to all items: length as displayed
characters (common_length) and as a byte index into the matches (sind) */
common_length = sind = 0;
- if (_rl_completion_prefix_display_length > 0 || want_style)
+ if (_rl_completion_prefix_display_length > 0)
{
t = gdb_printable_part (matches[0]);
temp = strrchr (t, '/');
common_length = temp ? gdb_fnwidth (temp) : gdb_fnwidth (t);
sind = temp ? strlen (temp) : strlen (t);
- if (_rl_completion_prefix_display_length > 0
- && common_length > _rl_completion_prefix_display_length
- && common_length > ELLIPSIS_LEN)
+ if (common_length > _rl_completion_prefix_display_length && common_length > ELLIPSIS_LEN)
max -= common_length - ELLIPSIS_LEN;
- else if (!want_style || common_length > max || sind > max)
+ else
common_length = sind = 0;
}
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