1 //===-- Definition of a class for mbstate_t and conversion -----*-- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_LIBC_SRC___SUPPORT_CHARACTER_CONVERTER_H 10 #define LLVM_LIBC_SRC___SUPPORT_CHARACTER_CONVERTER_H 11 12 #include "hdr/types/char32_t.h" 13 #include "hdr/types/char8_t.h" 14 #include "hdr/types/size_t.h" 15 #include "src/__support/common.h" 16 #include "src/__support/error_or.h" 17 #include "src/__support/wchar/mbstate.h" 18 19 namespace LIBC_NAMESPACE_DECL { 20 namespace internal { 21 22 class CharacterConverter { 23 private: 24 mbstate *state; 25 26 public: 27 CharacterConverter(mbstate *mbstate); 28 29 void clear(); 30 bool isFull(); 31 bool isEmpty(); 32 bool isValidState(); 33 34 size_t sizeAsUTF32(); 35 size_t sizeAsUTF8(); 36 37 int push(char8_t utf8_byte); 38 int push(char32_t utf32); 39 40 ErrorOr<char8_t> pop_utf8(); 41 ErrorOr<char32_t> pop_utf32(); 42 }; 43 44 } // namespace internal 45 } // namespace LIBC_NAMESPACE_DECL 46 47 #endif // LLVM_LIBC_SRC___SUPPORT_CHARACTER_CONVERTER_H 48