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- /* Parse a printf-style format string.
- Copyright (C) 1986-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- 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/>. */
- #ifndef COMMON_FORMAT_H
- #define COMMON_FORMAT_H
- #include "gdbsupport/gdb_string_view.h"
- #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
- # define USE_PRINTF_I64 1
- # define PRINTF_HAS_LONG_LONG
- #else
- # define USE_PRINTF_I64 0
- #endif
- /* The argclass represents the general type of data that goes with a
- format directive; int_arg for %d, long_arg for %l, and so forth.
- Note that these primarily distinguish types by size and need for
- special handling, so for instance %u and %x are (at present) also
- classed as int_arg. */
- enum argclass
- {
- literal_piece,
- int_arg, long_arg, long_long_arg, size_t_arg, ptr_arg,
- string_arg, wide_string_arg, wide_char_arg,
- double_arg, long_double_arg,
- dec32float_arg, dec64float_arg, dec128float_arg
- };
- /* A format piece is a section of the format string that may include a
- single print directive somewhere in it, and the associated class
- for the argument. */
- struct format_piece
- {
- format_piece (const char *str, enum argclass argc, int n)
- : string (str),
- argclass (argc),
- n_int_args (n)
- {
- }
- bool operator== (const format_piece &other) const
- {
- return (this->argclass == other.argclass
- && gdb::string_view (this->string) == other.string);
- }
- const char *string;
- enum argclass argclass;
- /* Count the number of preceding 'int' arguments that must be passed
- along. This is used for a width or precision of '*'. Note that
- this feature is only available in "gdb_extensions" mode. */
- int n_int_args;
- };
- class format_pieces
- {
- public:
- format_pieces (const char **arg, bool gdb_extensions = false);
- ~format_pieces () = default;
- DISABLE_COPY_AND_ASSIGN (format_pieces);
- typedef std::vector<format_piece>::iterator iterator;
- iterator begin ()
- {
- return m_pieces.begin ();
- }
- iterator end ()
- {
- return m_pieces.end ();
- }
- private:
- std::vector<format_piece> m_pieces;
- gdb::unique_xmalloc_ptr<char> m_storage;
- };
- #endif /* COMMON_FORMAT_H */
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