49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Copyright 2023 John Maddock.
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// Copyright Christopher Kormanyos 2013. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_MP_DETAIL_STRING_HELPERS_HPP
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#define BOOST_MP_DETAIL_STRING_HELPERS_HPP
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#include <algorithm>
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#include <cstring>
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namespace boost { namespace multiprecision { namespace detail {
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struct is_in_string
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{
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const char* begin;
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const char* end;
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is_in_string(const char* p) : begin(p), end(p + std::strlen(p)) {}
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bool operator()(char s) { return std::find(begin, end, s) != end; }
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};
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struct is_not_in_string
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{
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const char* begin;
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const char* end;
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is_not_in_string(const char* p) : begin(p), end(p + std::strlen(p)) {}
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bool operator()(char s) { return std::find(begin, end, s) == end; }
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};
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template <class Iterator>
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std::size_t find_first_of(Iterator begin, Iterator end, const char* what)
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{
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return static_cast<std::size_t>(std::find_if(begin, end, is_in_string(what)) - begin);
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}
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template <class Iterator>
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std::size_t find_first_not_of(Iterator begin, Iterator end, const char* what)
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{
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return static_cast<std::size_t>(std::find_if(begin, end, is_not_in_string(what)) - begin);
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}
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}}} // namespace boost::multiprecision::detail
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#endif // BOOST_MP_DETAIL_STRING_HELPERS_HPP
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