1 //===-- A data structure for str_to_number to return ------------*- 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 // ----------------------------------------------------------------------------- 10 // **** WARNING **** 11 // This file is shared with libc++. You should also be careful when adding 12 // dependencies to this file, since it needs to build for all libc++ targets. 13 // ----------------------------------------------------------------------------- 14 15 #ifndef LLVM_LIBC_SRC___SUPPORT_STR_TO_NUM_RESULT_H 16 #define LLVM_LIBC_SRC___SUPPORT_STR_TO_NUM_RESULT_H 17 18 #include "src/__support/macros/attributes.h" // LIBC_INLINE 19 #include "src/__support/macros/config.h" 20 21 #include <stddef.h> 22 23 namespace LIBC_NAMESPACE_DECL { 24 25 // ----------------------------------------------------------------------------- 26 // **** WARNING **** 27 // This interface is shared with libc++, if you change this interface you need 28 // to update it in both libc and libc++. 29 // ----------------------------------------------------------------------------- 30 template <typename T> struct StrToNumResult { 31 T value; 32 int error; 33 ptrdiff_t parsed_len; 34 StrToNumResultStrToNumResult35 LIBC_INLINE constexpr StrToNumResult(T value) 36 : value(value), error(0), parsed_len(0) {} StrToNumResultStrToNumResult37 LIBC_INLINE constexpr StrToNumResult(T value, ptrdiff_t parsed_len) 38 : value(value), error(0), parsed_len(parsed_len) {} StrToNumResultStrToNumResult39 LIBC_INLINE constexpr StrToNumResult(T value, ptrdiff_t parsed_len, int error) 40 : value(value), error(error), parsed_len(parsed_len) {} 41 has_errorStrToNumResult42 LIBC_INLINE constexpr bool has_error() { return error != 0; } 43 TStrToNumResult44 LIBC_INLINE constexpr operator T() { return value; } 45 }; 46 } // namespace LIBC_NAMESPACE_DECL 47 48 #endif // LLVM_LIBC_SRC___SUPPORT_STR_TO_NUM_RESULT_H 49