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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_STRINGS_STRING_PIECE_RUST_H_
#define BASE_STRINGS_STRING_PIECE_RUST_H_
#include <stdint.h>
#include "base/rust_buildflags.h"
#include "base/strings/string_piece_forward.h"
#include "third_party/rust/cxx/v1/crate/include/cxx.h"
#if !BUILDFLAG(BUILD_RUST_BASE_CONVERSIONS)
#error "string_piece_rust.h included without BUILD_RUST_BASE_CONVERSIONS"
#endif
namespace base {
// Create a Rust str from a base::BasicStringPiece. This will call std::abort
// if there is any invalid UTF8. If you're concerned about this, then
// instead use StringPieceToRustSlice and convert the data to a string on
// the Rust side (or pass in a std::string).
inline rust::Str StringPieceToRustStrUTF8(StringPiece string_piece) {
return rust::Str(string_piece.data(), string_piece.size());
}
// Create a Rust slice from a StringPiece. No UTF8 check is performed.
inline rust::Slice<const uint8_t> StringPieceToRustSlice(
StringPiece string_piece) {
return rust::Slice<const uint8_t>(
reinterpret_cast<const uint8_t*>(string_piece.data()),
string_piece.length() * sizeof(StringPiece::value_type));
}
// Create a StringPiece from a Rust str.
inline StringPiece RustStrToStringPiece(rust::Str str) {
return StringPiece(str.data(), str.size());
}
} // namespace base
#endif // BASE_STRINGS_STRING_PIECE_RUST_H_
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