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// Copyright (C) 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/>.
#ifndef RUST_TOKEN_TREE_DESUGAR_H
#define RUST_TOKEN_TREE_DESUGAR_H
#include "rust-ast-visitor.h"
#include "rust-system.h"
#include "rust-ast.h"
namespace Rust {
namespace AST {
/**
* Desugar a given token-tree before parsing it for a macro invocation. At the
* moment, the sole purpose of this desugar is to transform doc-comments into
* their attribute form (/// comment -> #[doc = "comment"])
*/
class TokenTreeDesugar : public DefaultASTVisitor
{
public:
TokenTreeDesugar () : desugared (std::vector<std::unique_ptr<TokenTree>> ())
{}
DelimTokenTree go (DelimTokenTree &tts);
private:
std::vector<std::unique_ptr<TokenTree>> desugared;
void append (TokenPtr &&new_token);
void append (std::unique_ptr<TokenTree> &&new_token);
using DefaultASTVisitor::visit;
virtual void visit (Token &tts) override;
};
}; // namespace AST
}; // namespace Rust
#endif //! RUST_TOKEN_TREE_DESUGAR_H
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