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// Copyright (C) 2020-2025 Free Software Foundation, Inc.
// This file is part of GCC.
// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.
// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include "rust-derive-copy.h"
#include "rust-hir-map.h"
#include "rust-path.h"
namespace Rust {
namespace AST {
DeriveCopy::DeriveCopy (location_t loc)
: DeriveVisitor (loc), expanded (nullptr)
{}
std::unique_ptr<AST::Item>
DeriveCopy::go (Item &item)
{
item.accept_vis (*this);
rust_assert (expanded);
return std::move (expanded);
}
std::unique_ptr<Item>
DeriveCopy::copy_impl (
std::string name,
const std::vector<std::unique_ptr<GenericParam>> &type_generics)
{
// we should have two of these, so we don't run into issues with
// two paths sharing a node id
auto copy_bound = builder.type_path (LangItem::Kind::COPY);
auto copy_trait_path = builder.type_path (LangItem::Kind::COPY);
auto generics = setup_impl_generics (name, type_generics,
builder.trait_bound (copy_bound));
return builder.trait_impl (copy_trait_path, std::move (generics.self_type),
{}, std::move (generics.impl));
}
void
DeriveCopy::visit_struct (StructStruct &item)
{
expanded = copy_impl (item.get_struct_name ().as_string (),
item.get_generic_params ());
}
void
DeriveCopy::visit_tuple (TupleStruct &item)
{
expanded = copy_impl (item.get_struct_name ().as_string (),
item.get_generic_params ());
}
void
DeriveCopy::visit_enum (Enum &item)
{
expanded = copy_impl (item.get_identifier ().as_string (),
item.get_generic_params ());
}
void
DeriveCopy::visit_union (Union &item)
{
expanded = copy_impl (item.get_identifier ().as_string (),
item.get_generic_params ());
}
} // namespace AST
} // namespace Rust
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