gcc/rust/ast/rust-fmt.cc

   1 // Copyright (C) 2020-2025 Free Software Foundation, Inc.
   2
   3 // This file is part of GCC.
   4
   5 // GCC is free software; you can redistribute it and/or modify it under
   6 // the terms of the GNU General Public License as published by the Free
   7 // Software Foundation; either version 3, or (at your option) any later
   8 // version.
   9
  10 // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13 // for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with GCC; see the file COPYING3.  If not see
  17 // <http://www.gnu.org/licenses/>.
  18
  19 #include "rust-fmt.h"
  20 #include "rust-diagnostics.h"
  21
  22 namespace Rust {
  23 namespace Fmt {
  24
  25 std::string
  26 ffi::RustHamster::to_string () const
  27 {
  28   return std::string (ptr, len);
  29 }
  30
  31 Pieces
  32 Pieces::collect (const std::string &to_parse, bool append_newline)
  33 {
  34   auto handle = ffi::collect_pieces (to_parse.c_str (), append_newline);
  35
  36   // this performs multiple copies, can we avoid them maybe?
  37   // TODO: Instead of just creating a vec of, basically, `ffi::Piece`s, we
  38   // should transform them into the proper C++ type which we can work with. so
  39   // transform all the strings into C++ strings? all the Option<T> into
  40   // tl::optional<T>?
  41   auto pieces_vector = std::vector<ffi::Piece> (handle.piece_slice.base_ptr,
  42                                                 handle.piece_slice.base_ptr
  43                                                   + handle.piece_slice.len);
  44
  45   return Pieces (handle, std::move (pieces_vector));
  46 }
  47
  48 Pieces::~Pieces () { ffi::destroy_pieces (handle); }
  49
  50 Pieces::Pieces (const Pieces &other) : pieces_vector (other.pieces_vector)
  51 {
  52   handle = ffi::clone_pieces (other.handle);
  53 }
  54
  55 Pieces &
  56 Pieces::operator= (const Pieces &other)
  57 {
  58   handle = ffi::clone_pieces (other.handle);
  59   pieces_vector = other.pieces_vector;
  60
  61   return *this;
  62 }
  63
  64 Pieces::Pieces (Pieces &&other)
  65   : pieces_vector (std::move (other.pieces_vector)),
  66     handle (clone_pieces (other.handle))
  67 {}
  68
  69 } // namespace Fmt
  70 } // namespace Rust