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// 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_compiler_capabilities.hpp>
#include <catch2/internal/catch_parse_numbers.hpp>
#include <catch2/internal/catch_string_manip.hpp>
#include <limits>
#include <stdexcept>
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::invalid_argument const& ) {
// no conversion could be performed
}
CATCH_CATCH_ANON( std::out_of_range const& ) {
// the input does not fit into an unsigned long long
}
return {};
}
} // namespace Catch
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