1 // Copyright 2021 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_STRINGS_STRING_PIECE_RUST_H_ 6 #define BASE_STRINGS_STRING_PIECE_RUST_H_ 7 8 #include "base/rust_buildflags.h" 9 10 #if BUILDFLAG(BUILD_RUST_BASE_CONVERSIONS) 11 12 #include <stdint.h> 13 14 #include "base/strings/string_piece.h" 15 #include "third_party/rust/cxx/v1/crate/include/cxx.h" // nogncheck 16 17 namespace base { 18 19 // Create a Rust str from a base::BasicStringPiece. This will call std::abort 20 // if there is any invalid UTF8. If you're concerned about this, then 21 // instead use StringPieceToRustSlice and convert the data to a string on 22 // the Rust side (or pass in a std::string). StringPieceToRustStrUTF8(StringPiece string_piece)23inline rust::Str StringPieceToRustStrUTF8(StringPiece string_piece) { 24 return rust::Str(string_piece.data(), string_piece.size()); 25 } 26 27 // Create a Rust slice from a StringPiece. No UTF8 check is performed. StringPieceToRustSlice(StringPiece string_piece)28inline rust::Slice<const uint8_t> StringPieceToRustSlice( 29 StringPiece string_piece) { 30 return rust::Slice<const uint8_t>( 31 reinterpret_cast<const uint8_t*>(string_piece.data()), 32 string_piece.length() * sizeof(StringPiece::value_type)); 33 } 34 35 // Create a StringPiece from a Rust str. RustStrToStringPiece(rust::Str str)36inline StringPiece RustStrToStringPiece(rust::Str str) { 37 return StringPiece(str.data(), str.size()); 38 } 39 40 } // namespace base 41 42 #endif // BUILDFLAG(BUILD_RUST_BASE_CONVERSIONS) 43 44 #endif // BASE_STRINGS_STRING_PIECE_RUST_H_ 45