libgrust/libproc_macro_internal/tokenstream.h

   1 // Copyright (C) 2023-2024 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 TOKENSTREAM_H
  24 #define TOKENSTREAM_H
  25
  26 #include <cstdint>
  27 #include <vector>
  28 #include <string>
  29
  30 #include "ffistring.h"
  31
  32 namespace ProcMacro {
  33 struct TokenTree;
  34
  35 struct TokenStream
  36 {
  37   TokenTree *data;
  38   std::uint64_t size;
  39   std::uint64_t capacity;
  40
  41 public:
  42   void grow (std::uint64_t delta);
  43   void push (TokenTree tree);
  44
  45   TokenStream clone () const;
  46
  47   static TokenStream make_tokenstream (std::vector<TokenTree> vec);
  48   static TokenStream make_tokenstream (std::uint64_t capacity = 1);
  49   static TokenStream make_tokenstream (std::string &str, bool &has_error);
  50
  51   static void drop (TokenStream *stream);
  52 };
  53
  54 extern "C" TokenStream
  55 TokenStream__new ();
  56
  57 extern "C" TokenStream
  58 TokenStream__with_capacity (std::uint64_t capacity);
  59
  60 extern "C" void
  61 TokenSream__push (TokenStream *stream, TokenTree tree);
  62
  63 extern "C" bool
  64 TokenStream__from_string (FFIString str, TokenStream *ts);
  65
  66 extern "C" TokenStream
  67 TokenStream__clone (const TokenStream *ts);
  68
  69 extern "C" void
  70 TokenStream__drop (TokenStream *stream);
  71
  72 } // namespace ProcMacro
  73
  74 #endif /* ! TOKENSTREAM_H */