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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/>.
#ifndef RUST_PUNYCODE_H
#define RUST_PUNYCODE_H
#include "rust-unicode.h"
#include "optional.h"
namespace Rust {
/* Encode a string as punycode. Returns a string if encoding is successful.
* Returns nullopt otherwise. Note that a returned string contains only ASCII
* characters and does not start with `xn--`. */
tl::optional<std::string>
encode_punycode (const Utf8String &src);
} // namespace Rust
#if CHECKING_P
namespace selftest {
void
rust_punycode_encode_test ();
} // namespace selftest
#endif // CHECKING_P
#endif
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