mirror of https://github.com/gcc-mirror/gcc.git
73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
// Copyright (C) 2020-2024 Free Software Foundation, Inc.
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// This file is part of GCC.
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// GCC is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 3, or (at your option) any later
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// version.
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// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// You should have received a copy of the GNU General Public License
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// along with GCC; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include "rust-rib.h"
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namespace Rust {
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namespace Resolver2_0 {
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DuplicateNameError::DuplicateNameError (std::string name, NodeId existing)
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: name (name), existing (existing)
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{}
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Rib::Rib (Kind kind) : kind (kind) {}
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Rib::Rib (Kind kind, std::string identifier, NodeId id)
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: Rib (kind, {{identifier, id}})
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{}
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Rib::Rib (Kind kind, std::unordered_map<std::string, NodeId> values)
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: kind (kind), values (std::move (values))
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{}
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tl::expected<NodeId, DuplicateNameError>
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Rib::insert (std::string name, NodeId id, bool can_shadow)
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{
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auto res = values.insert ({name, id});
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auto inserted_id = res.first->second;
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auto existed = !res.second;
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// if we couldn't insert, the element already exists - exit with an error,
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// unless shadowing is allowed
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if (existed && !can_shadow)
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return tl::make_unexpected (DuplicateNameError (name, inserted_id));
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// return the NodeId
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return inserted_id;
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}
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tl::optional<NodeId>
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Rib::get (const std::string &name)
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{
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auto it = values.find (name);
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if (it == values.end ())
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return {};
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return it->second;
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}
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const std::unordered_map<std::string, NodeId> &
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Rib::get_values () const
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{
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return values;
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}
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} // namespace Resolver2_0
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} // namespace Rust
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