1 files changed, 48 insertions, 0 deletions
diff --git a/gcc/rust/util/rust-codepoint.h b/gcc/rust/util/rust-codepoint.h
new file mode 100644
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+++ b/gcc/rust/util/rust-codepoint.h
@@ -0,0 +1,48 @@
+// Copyright (C) 2020-2024 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_CODEPOINT_H
+#define RUST_CODEPOINT_H
+
+#include "rust-system.h"
+
+namespace Rust {
+
+// FIXME: move this to rust-unicode.h?
+struct Codepoint
+{
+  uint32_t value;
+
+  // Creates a zero codepoint.
+  Codepoint () : value (0) {}
+
+  // Creates a codepoint from an encoded UTF-8 value.
+  Codepoint (uint32_t value) : value (value) {}
+
+  static Codepoint eof () { return Codepoint (UINT32_MAX); }
+  bool is_eof () const { return value == UINT32_MAX; }
+
+  // Returns a C++ string containing string value of codepoint.
+  std::string as_string ();
+
+  bool operator== (Codepoint other) const { return value == other.value; }
+  bool operator!= (Codepoint other) const { return !operator== (other); }
+};
+} // namespace Rust
+
+#endif