blob: 390b8c872a7eb7f2793c8d6ce5859bd57ba135f9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#include <catch2/internal/catch_parse_numbers.hpp>
#include <catch2/internal/catch_compiler_capabilities.hpp>
#include <catch2/internal/catch_string_manip.hpp>
#include <limits>
namespace Catch {
Optional<unsigned int> parseUInt(std::string const& input, int base) {
auto trimmed = trim( input );
// std::stoull is annoying and accepts numbers starting with '-',
// it just negates them into unsigned int
if ( trimmed.empty() || trimmed[0] == '-' ) {
return {};
}
CATCH_TRY {
size_t pos = 0;
const auto ret = std::stoull( trimmed, &pos, base );
// We did not consume the whole input, so there is an issue
// This can be bunch of different stuff, like multiple numbers
// in the input, or invalid digits/characters and so on. Either
// way, we do not want to return the partially parsed result.
if ( pos != trimmed.size() ) {
return {};
}
// Too large
if ( ret > std::numeric_limits<unsigned int>::max() ) {
return {};
}
return static_cast<unsigned int>(ret);
} CATCH_CATCH_ANON( std::exception const& ) {
// There was a larger issue with the input, e.g. the parsed
// number would be too large to fit within ull.
return {};
}
}
} // namespace Catch
|