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Contents
/*
*
* Copyright (c) 2020
* John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE basic_regex_parser.cpp
* VERSION see <boost/version.hpp>
* DESCRIPTION: Declares template class basic_regex_parser.
*/
#include <boost/regex/config.hpp>
#include <set>
#ifndef BOOST_REGEX_V4_INDEXED_BIT_FLAG_HPP
#define BOOST_REGEX_V4_INDEXED_BIT_FLAG_HPP
namespace boost{
namespace BOOST_REGEX_DETAIL_NS{
class indexed_bit_flag
{
boost::uint64_t low_mask;
std::set<std::size_t> mask_set;
public:
indexed_bit_flag() : low_mask(0) {}
void set(std::size_t i)
{
if (i < std::numeric_limits<boost::uint64_t>::digits - 1)
low_mask |= static_cast<boost::uint64_t>(1u) << i;
else
mask_set.insert(i);
}
bool test(std::size_t i)
{
if (i < std::numeric_limits<boost::uint64_t>::digits - 1)
return low_mask & static_cast<boost::uint64_t>(1u) << i ? true : false;
else
return mask_set.find(i) != mask_set.end();
}
};
} // namespace BOOST_REGEX_DETAIL_NS
} // namespace boost
#endif
Version data entries
14 entries across 14 versions & 1 rubygems