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
23namespace 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// -----------------------------------------------------------------------------
30template <typename T> struct StrToNumResult {
31 T value;
32 int error;
33 ptrdiff_t parsed_len;
34
35 LIBC_INLINE constexpr StrToNumResult(T value)
36 : value(value), error(0), parsed_len(0) {}
37 LIBC_INLINE constexpr StrToNumResult(T value, ptrdiff_t parsed_len)
38 : value(value), error(0), parsed_len(parsed_len) {}
39 LIBC_INLINE constexpr StrToNumResult(T value, ptrdiff_t parsed_len, int error)
40 : value(value), error(error), parsed_len(parsed_len) {}
41
42 LIBC_INLINE constexpr bool has_error() { return error != 0; }
43
44 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