libgrust/libproc_macro_internal/ffistring.h

   1 // Copyright (C) 2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU Proc Macro Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // Under Section 7 of GPL version 3, you are granted additional
  15 // permissions described in the GCC Runtime Library Exception, version
  16 // 3.1, as published by the Free Software Foundation.
  17
  18 // You should have received a copy of the GNU General Public License and
  19 // a copy of the GCC Runtime Library Exception along with this program;
  20 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 #ifndef FFISTRING_H
  24 #define FFISTRING_H
  25
  26 #include <cstdint>
  27 #include <string>
  28
  29 namespace ProcMacro {
  30
  31 struct FFIString
  32 {
  33   const unsigned char *data;
  34   std::uint64_t len;
  35
  36 public:
  37   FFIString clone () const;
  38   std::string to_string () const;
  39   static FFIString make_ffistring (const std::string &str);
  40   static FFIString make_ffistring (const unsigned char *data,
  41                                    std::uint64_t len);
  42   static void drop (FFIString *str);
  43 };
  44
  45 extern "C" {
  46 FFIString
  47 FFIString__new (const unsigned char *data, std::uint64_t len);
  48
  49 void
  50 FFIString__drop (FFIString *str);
  51 }
  52
  53 } // namespace ProcMacro
  54
  55 #endif /* ! FFISTRING_H */