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/* Parse a printf-style format string.
Copyright (C) 1986-2025 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 GDBSUPPORT_FORMAT_H
#define GDBSUPPORT_FORMAT_H
#include <string_view>
#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,
value_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)
{
gdb_assert (str != nullptr);
}
bool operator== (const format_piece &other) const
{
return (this->argclass == other.argclass
&& std::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,
bool value_extension = 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 /* GDBSUPPORT_FORMAT_H */
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