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author | Gary Benson <gbenson@redhat.com> | 2015-01-31 15:07:22 -0800 |
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committer | Doug Evans <xdje42@gmail.com> | 2015-01-31 15:07:22 -0800 |
commit | ef0b411a110cd2602cb89c3fb237baf8beb28545 (patch) | |
tree | f689bb2c56c0d75b884ee535c8137ed9ebe7d561 /gdb/tui | |
parent | e11c72c7e4879894b9711b5c0b8247c20c6050f6 (diff) | |
download | gdb-ef0b411a110cd2602cb89c3fb237baf8beb28545.zip gdb-ef0b411a110cd2602cb89c3fb237baf8beb28545.tar.gz gdb-ef0b411a110cd2602cb89c3fb237baf8beb28545.tar.bz2 |
Add max-completions parameter, and implement tab-completion limiting.
This commit adds a new exception, MAX_COMPLETIONS_REACHED_ERROR, to be
thrown whenever the completer has generated too many candidates to
be useful. A new user-settable variable, "max_completions", is added
to control this behaviour. A top-level completion limit is added to
complete_line_internal, as the final check to ensure the user never
sees too many completions. An additional limit is added to
default_make_symbol_completion_list_break_on, to halt time-consuming
symbol table expansions.
gdb/ChangeLog:
PR cli/9007
PR cli/11920
PR cli/15548
* cli/cli-cmds.c (complete_command): Notify user if max-completions
reached.
* common/common-exceptions.h (enum errors)
<MAX_COMPLETIONS_REACHED_ERROR>: New value.
* completer.h (get_max_completions_reached_message): New declaration.
(max_completions): Likewise.
(completion_tracker_t): New typedef.
(new_completion_tracker): New declaration.
(make_cleanup_free_completion_tracker): Likewise.
(maybe_add_completion_enum): New enum.
(maybe_add_completion): New declaration.
(throw_max_completions_reached_error): Likewise.
* completer.c (max_completions): New global variable.
(new_completion_tracker): New function.
(free_completion_tracker): Likewise.
(make_cleanup_free_completion_tracker): Likewise.
(maybe_add_completions): Likewise.
(throw_max_completions_reached_error): Likewise.
(complete_line): Remove duplicates and limit result to max_completions
entries.
(get_max_completions_reached_message): New function.
(gdb_display_match_list): Handle max_completions.
(_initialize_completer): New declaration and function.
* symtab.c: Include completer.h.
(completion_tracker): New static variable.
(completion_list_add_name): Call maybe_add_completion.
(default_make_symbol_completion_list_break_on_1): Renamed from
default_make_symbol_completion_list_break_on. Maintain
completion_tracker across calls to completion_list_add_name.
(default_make_symbol_completion_list_break_on): New function.
* top.c (init_main): Set rl_completion_display_matches_hook.
* tui/tui-io.c: Include completer.h.
(tui_old_rl_display_matches_hook): New static global.
(tui_rl_display_match_list): Notify user if max-completions reached.
(tui_setup_io): Save/restore rl_completion_display_matches_hook.
* NEWS (New Options): Mention set/show max-completions.
gdb/doc/ChangeLog:
* gdb.texinfo (Command Completion): Document new
"set/show max-completions" option.
gdb/testsuite/ChangeLog:
* gdb.base/completion.exp: Disable completion limiting for
existing tests. Add new tests to check completion limiting.
* gdb.linespec/ls-errs.exp: Disable completion limiting.
Diffstat (limited to 'gdb/tui')
-rw-r--r-- | gdb/tui/tui-io.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gdb/tui/tui-io.c b/gdb/tui/tui-io.c index 831705c..2b5a166 100644 --- a/gdb/tui/tui-io.c +++ b/gdb/tui/tui-io.c @@ -132,6 +132,7 @@ static rl_getc_func_t *tui_old_rl_getc_function; static rl_voidfunc_t *tui_old_rl_redisplay_function; static rl_vintfunc_t *tui_old_rl_prep_terminal; static rl_voidfunc_t *tui_old_rl_deprep_terminal; +static rl_compdisp_func_t *tui_old_rl_display_matches_hook; static int tui_old_rl_echoing_p; /* Readline output stream. @@ -468,6 +469,7 @@ tui_setup_io (int mode) tui_old_rl_deprep_terminal = rl_deprep_term_function; tui_old_rl_prep_terminal = rl_prep_term_function; tui_old_rl_getc_function = rl_getc_function; + tui_old_rl_display_matches_hook = rl_completion_display_matches_hook; tui_old_rl_outstream = rl_outstream; tui_old_rl_echoing_p = _rl_echoing_p; rl_redisplay_function = tui_redisplay_readline; @@ -511,8 +513,8 @@ tui_setup_io (int mode) rl_deprep_term_function = tui_old_rl_deprep_terminal; rl_prep_term_function = tui_old_rl_prep_terminal; rl_getc_function = tui_old_rl_getc_function; + rl_completion_display_matches_hook = tui_old_rl_display_matches_hook; rl_outstream = tui_old_rl_outstream; - rl_completion_display_matches_hook = 0; _rl_echoing_p = tui_old_rl_echoing_p; rl_already_prompted = 0; |