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/* Header for GDB line completion.
Copyright (C) 2000-2018 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
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (LINESPEC_H)
#define LINESPEC_H 1
struct symtab;
#include "location.h"
#include "vec.h"
/* Flags to pass to decode_line_1 and decode_line_full. */
enum decode_line_flags
{
/* Set this flag if you want the resulting SALs to describe the
first line of indicated functions. */
DECODE_LINE_FUNFIRSTLINE = 1,
/* Set this flag if you want "list mode". In this mode, a
FILE:LINE linespec will always return a result, and such
linespecs will not be expanded to all matches. */
DECODE_LINE_LIST_MODE = 2
};
/* decode_line_full returns a vector of these. */
struct linespec_sals
{
/* This is the location corresponding to the sals contained in this
object. It can be passed as the FILTER argument to future calls
to decode_line_full. This is freed by the linespec_result
destructor. */
char *canonical;
/* Sals. */
std::vector<symtab_and_line> sals;
};
/* An instance of this may be filled in by decode_line_1. The caller
must make copies of any data that it needs to keep. */
struct linespec_result
{
linespec_result () = default;
~linespec_result ();
DISABLE_COPY_AND_ASSIGN (linespec_result);
/* If true, the linespec should be displayed to the user. This
is used by "unusual" linespecs where the ordinary `info break'
display mechanism would do the wrong thing. */
bool special_display = false;
/* If true, the linespec result should be considered to be a
"pre-expanded" multi-location linespec. A pre-expanded linespec
holds all matching locations in a single linespec_sals
object. */
bool pre_expanded = false;
/* If PRE_EXPANDED is non-zero, this is set to the location entered
by the user. */
event_location_up location;
/* The sals. The vector will be freed by the destructor. */
std::vector<linespec_sals> lsals;
};
/* Decode a linespec using the provided default symtab and line. */
extern std::vector<symtab_and_line>
decode_line_1 (const struct event_location *location, int flags,
struct program_space *search_pspace,
struct symtab *default_symtab, int default_line);
/* Parse LOCATION and return results. This is the "full"
interface to this module, which handles multiple results
properly.
For FLAGS, see decode_line_flags. DECODE_LINE_LIST_MODE is not
valid for this function.
If SEARCH_PSPACE is not NULL, symbol search is restricted to just
that program space.
DEFAULT_SYMTAB and DEFAULT_LINE describe the default location.
DEFAULT_SYMTAB can be NULL, in which case the current symtab and
line are used.
CANONICAL is where the results are stored. It must not be NULL.
SELECT_MODE must be one of the multiple_symbols_* constants, or
NULL. It determines how multiple results will be handled. If
NULL, the appropriate CLI value will be used.
FILTER can either be NULL or a string holding a canonical name.
This is only valid when SELECT_MODE is multiple_symbols_all.
Multiple results are handled differently depending on the
arguments:
. With multiple_symbols_cancel, an exception is thrown.
. With multiple_symbols_ask, a menu is presented to the user. The
user may select none, in which case an exception is thrown; or all,
which is handled like multiple_symbols_all, below. Otherwise,
CANONICAL->SALS will have one entry for each name the user chose.
. With multiple_symbols_all, CANONICAL->SALS will have a single
entry describing all the matching locations. If FILTER is
non-NULL, then only locations whose canonical name is equal (in the
strcmp sense) to FILTER will be returned; all others will be
filtered out. */
extern void decode_line_full (const struct event_location *location, int flags,
struct program_space *search_pspace,
struct symtab *default_symtab, int default_line,
struct linespec_result *canonical,
const char *select_mode,
const char *filter);
/* Given a string, return the line specified by it, using the current
source symtab and line as defaults.
This is for commands like "list" and "breakpoint". */
extern std::vector<symtab_and_line> decode_line_with_current_source
(const char *, int);
/* Given a string, return the line specified by it, using the last displayed
codepoint's values as defaults, or nothing if they aren't valid. */
extern std::vector<symtab_and_line> decode_line_with_last_displayed
(const char *, int);
/* Does P represent one of the keywords? If so, return
the keyword. If not, return NULL. */
extern const char *linespec_lexer_lex_keyword (const char *p);
/* Parse a line offset from STRING. */
extern struct line_offset linespec_parse_line_offset (const char *string);
/* Return the quote characters permitted by the linespec parser. */
extern const char *get_gdb_linespec_parser_quote_characters (void);
/* Does STRING represent an Ada operator? If so, return the length
of the decoded operator name. If not, return 0. */
extern int is_ada_operator (const char *string);
/* Find an instance of the character C in the string S that is outside
of all parenthesis pairs, single-quoted strings, and double-quoted
strings. Also, ignore the char within a template name, like a ','
within foo<int, int>. */
extern const char *find_toplevel_char (const char *s, char c);
/* Find the end of the (first) linespec pointed to by *STRINGP.
STRINGP will be advanced to this point. */
extern void linespec_lex_to_end (const char **stringp);
extern const char * const linespec_keywords[];
/* Complete a linespec. */
extern void linespec_complete (completion_tracker &tracker,
const char *text,
symbol_name_match_type match_type);
/* Complete a function symbol, in linespec mode, according to
FUNC_MATCH_TYPE. If SOURCE_FILENAME is non-NULL, limits completion
to the list of functions defined in source files that match
SOURCE_FILENAME. */
extern void linespec_complete_function (completion_tracker &tracker,
const char *function,
symbol_name_match_type func_match_type,
const char *source_filename);
/* Complete a label symbol, in linespec mode. Only labels of
functions named FUNCTION_NAME are considered. If SOURCE_FILENAME
is non-NULL, limits completion to labels of functions defined in
source files that match SOURCE_FILENAME. */
extern void linespec_complete_label (completion_tracker &tracker,
const struct language_defn *language,
const char *source_filename,
const char *function_name,
symbol_name_match_type name_match_type,
const char *label_name);
/* Evaluate the expression pointed to by EXP_PTR into a CORE_ADDR,
advancing EXP_PTR past any parsed text. */
extern CORE_ADDR linespec_expression_to_pc (const char **exp_ptr);
#endif /* defined (LINESPEC_H) */
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