gdb/common/format.h

   1 /* Parse a printf-style format string.
   2
   3    Copyright (C) 1986-2017 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef COMMON_FORMAT_H
  21 #define COMMON_FORMAT_H
  22
  23 #if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
  24 # define USE_PRINTF_I64 1
  25 # define PRINTF_HAS_LONG_LONG
  26 #else
  27 # define USE_PRINTF_I64 0
  28 #endif
  29
  30 /* The argclass represents the general type of data that goes with a
  31    format directive; int_arg for %d, long_arg for %l, and so forth.
  32    Note that these primarily distinguish types by size and need for
  33    special handling, so for instance %u and %x are (at present) also
  34    classed as int_arg.  */
  35
  36 enum argclass
  37   {
  38     literal_piece,
  39     int_arg, long_arg, long_long_arg, ptr_arg,
  40     string_arg, wide_string_arg, wide_char_arg,
  41     double_arg, long_double_arg,
  42     dec32float_arg, dec64float_arg, dec128float_arg
  43   };
  44
  45 /* A format piece is a section of the format string that may include a
  46    single print directive somewhere in it, and the associated class
  47    for the argument.  */
  48
  49 struct format_piece
  50 {
  51   format_piece (const char *str, enum argclass argc)
  52     : string (str),
  53       argclass (argc)
  54   {
  55   }
  56
  57   const char *string;
  58   enum argclass argclass;
  59 };
  60
  61 class format_pieces
  62 {
  63 public:
  64
  65   format_pieces (const char **arg);
  66   ~format_pieces () = default;
  67
  68   DISABLE_COPY_AND_ASSIGN (format_pieces);
  69
  70   format_piece &operator[] (size_t index)
  71   {
  72     return m_pieces[index];
  73   }
  74
  75   typedef std::vector<format_piece>::iterator iterator;
  76
  77   iterator begin ()
  78   {
  79     return m_pieces.begin ();
  80   }
  81
  82   iterator end ()
  83   {
  84     return m_pieces.end ();
  85   }
  86
  87 private:
  88
  89   std::vector<format_piece> m_pieces;
  90   gdb::unique_xmalloc_ptr<char> m_storage;
  91 };
  92
  93 #endif /* COMMON_FORMAT_H */