gcc/unique-argv.h

   1 /* C++11 wrapper around libiberty's argv.c
   2    Copyright (C) 2024 Free Software Foundation, Inc.
   3    Contributed by David Malcolm <dmalcolm@redhat.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_UNIQUE_ARGV_H
  22 #define GCC_UNIQUE_ARGV_H
  23
  24 /* C++11 wrapper around libiberty's argv.c, with
  25    ownership of the underlying array and strings.  */
  26
  27 struct unique_argv
  28 {
  29   /* Take ownership of argv.  */
  30   unique_argv (char **argv)
  31   : m_argv (argv)
  32   {
  33   }
  34
  35   ~unique_argv ()
  36   {
  37     freeargv (m_argv);
  38   }
  39
  40   unique_argv (const unique_argv &other) = delete;
  41   unique_argv &operator= (const unique_argv &other) = delete;
  42
  43   unique_argv (unique_argv &&other)
  44   : m_argv (other.m_argv)
  45   {
  46     other.m_argv = nullptr;
  47   }
  48
  49   unique_argv &operator= (unique_argv &&other)
  50   {
  51     freeargv (m_argv);
  52     m_argv = other.m_argv;
  53     other.m_argv = nullptr;
  54     return *this;
  55   }
  56
  57   char **release ()
  58   {
  59     char **result = m_argv;
  60     m_argv = nullptr;
  61     return result;
  62   }
  63
  64   char **m_argv;
  65 };
  66
  67 #endif /* ! GCC_UNIQUE_ARGV_H */