/* Header for GDB line completion.
- Copyright (C) 2000-2013 Free Software Foundation, Inc.
+ Copyright (C) 2000-2015 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#define COMPLETER_H 1
#include "gdb_vecs.h"
+#include "command.h"
+
+/* Types of functions in struct match_list_displayer. */
+
+struct match_list_displayer;
+
+typedef void mld_crlf_ftype (const struct match_list_displayer *);
+typedef void mld_putch_ftype (const struct match_list_displayer *, int);
+typedef void mld_puts_ftype (const struct match_list_displayer *,
+ const char *);
+typedef void mld_flush_ftype (const struct match_list_displayer *);
+typedef void mld_erase_entire_line_ftype (const struct match_list_displayer *);
+typedef void mld_beep_ftype (const struct match_list_displayer *);
+typedef int mld_read_key_ftype (const struct match_list_displayer *);
+
+/* Interface between CLI/TUI and gdb_match_list_displayer. */
+
+struct match_list_displayer
+{
+ /* The screen dimensions to work with when displaying matches. */
+ int height, width;
+
+ /* Print cr,lf. */
+ mld_crlf_ftype *crlf;
+
+ /* Not "putc" to avoid issues where it is a stdio macro. Sigh. */
+ mld_putch_ftype *putch;
+
+ /* Print a string. */
+ mld_puts_ftype *puts;
+
+ /* Flush all accumulated output. */
+ mld_flush_ftype *flush;
+
+ /* Erase the currently line on the terminal (but don't discard any text the
+ user has entered, readline may shortly re-print it). */
+ mld_erase_entire_line_ftype *erase_entire_line;
+
+ /* Ring the bell. */
+ mld_beep_ftype *beep;
+
+ /* Read one key. */
+ mld_read_key_ftype *read_key;
+};
+
+extern void gdb_display_match_list (char **matches, int len, int max,
+ const struct match_list_displayer *);
+
+extern const char *get_max_completions_reached_message (void);
extern VEC (char_ptr) *complete_line (const char *text,
- char *line_buffer,
+ const char *line_buffer,
int point);
extern char *readline_line_completion_function (const char *text,
extern VEC (char_ptr) *signal_completer (struct cmd_list_element *,
const char *, const char *);
+extern VEC (char_ptr) *reg_or_group_completer (struct cmd_list_element *,
+ const char *, const char *);
+
+extern VEC (char_ptr) *reggroup_completer (struct cmd_list_element *,
+ const char *, const char *);
+
extern char *get_gdb_completer_quote_characters (void);
extern char *gdb_completion_word_break_characters (void);
+/* Set the word break characters array to the corresponding set of
+ chars, based on FN. This function is useful for cases when the
+ completer doesn't know the type of the completion until some
+ calculation is done (e.g., for Python functions). */
+
+extern void set_gdb_completion_word_break_characters (completer_ftype *fn);
+
/* Exported to linespec.c */
extern const char *skip_quoted_chars (const char *, const char *,
extern const char *skip_quoted (const char *);
+/* Maximum number of candidates to consider before the completer
+ bails by throwing MAX_COMPLETIONS_REACHED_ERROR. Negative values
+ disable limiting. */
+
+extern int max_completions;
+
+/* Object to track how many unique completions have been generated.
+ Used to limit the size of generated completion lists. */
+
+typedef htab_t completion_tracker_t;
+
+/* Create a new completion tracker.
+ The result is a hash table to track added completions, or NULL
+ if max_completions <= 0. If max_completions < 0, tracking is disabled.
+ If max_completions == 0, the max is indeed zero. */
+
+extern completion_tracker_t new_completion_tracker (void);
+
+/* Make a cleanup to free a completion tracker, and reset its pointer
+ to NULL. */
+
+extern struct cleanup *make_cleanup_free_completion_tracker
+ (completion_tracker_t *tracker_ptr);
+
+/* Return values for maybe_add_completion. */
+
+enum maybe_add_completion_enum
+{
+ /* NAME has been recorded and max_completions has not been reached,
+ or completion tracking is disabled (max_completions < 0). */
+ MAYBE_ADD_COMPLETION_OK,
+
+ /* NAME has been recorded and max_completions has been reached
+ (thus the caller can stop searching). */
+ MAYBE_ADD_COMPLETION_OK_MAX_REACHED,
+
+ /* max-completions entries has been reached.
+ Whether NAME is a duplicate or not is not determined. */
+ MAYBE_ADD_COMPLETION_MAX_REACHED,
+
+ /* NAME has already been recorded.
+ Note that this is never returned if completion tracking is disabled
+ (max_completions < 0). */
+ MAYBE_ADD_COMPLETION_DUPLICATE
+};
+
+/* Add the completion NAME to the list of generated completions if
+ it is not there already.
+ If max_completions is negative, nothing is done, not even watching
+ for duplicates, and MAYBE_ADD_COMPLETION_OK is always returned.
+
+ If MAYBE_ADD_COMPLETION_MAX_REACHED is returned, callers are required to
+ record at least one more completion. The final list will be pruned to
+ max_completions, but recording at least one more than max_completions is
+ the signal to the completion machinery that too many completions were
+ found. */
+
+extern enum maybe_add_completion_enum
+ maybe_add_completion (completion_tracker_t tracker, char *name);
+
+/* Wrapper to throw MAX_COMPLETIONS_REACHED_ERROR. */
+
+extern void throw_max_completions_reached_error (void);
+
#endif /* defined (COMPLETER_H) */
projects / binutils.git / blobdiff