//
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// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Official repository: https://github.com/boostorg/beast
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//
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#ifndef BOOST_BEAST_IMPL_STATIC_STRING_HPP
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#define BOOST_BEAST_IMPL_STATIC_STRING_HPP
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#include <boost/beast/core/detail/static_string.hpp>
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#include <boost/throw_exception.hpp>
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namespace boost {
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namespace beast {
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//
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// (constructor)
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//
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string()
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{
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n_ = 0;
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term();
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}
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string(size_type count, CharT ch)
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{
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assign(count, ch);
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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static_string<N, CharT, Traits>::
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static_string(static_string<M, CharT, Traits> const& other,
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size_type pos)
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{
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assign(other, pos);
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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static_string<N, CharT, Traits>::
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static_string(static_string<M, CharT, Traits> const& other,
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size_type pos, size_type count)
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{
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assign(other, pos, count);
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}
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string(CharT const* s, size_type count)
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{
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assign(s, count);
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}
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string(CharT const* s)
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{
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auto const count = Traits::length(s);
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if(count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"count > max_size()"});
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n_ = count;
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Traits::copy(&s_[0], s, n_ + 1);
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}
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template<std::size_t N, class CharT, class Traits>
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template<class InputIt>
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static_string<N, CharT, Traits>::
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static_string(InputIt first, InputIt last)
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{
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assign(first, last);
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}
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string(static_string const& s)
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{
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assign(s);
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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static_string<N, CharT, Traits>::
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static_string(static_string<M, CharT, Traits> const& s)
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{
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assign(s);
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}
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string(std::initializer_list<CharT> init)
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{
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assign(init.begin(), init.end());
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}
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template<std::size_t N, class CharT, class Traits>
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static_string<N, CharT, Traits>::
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static_string(string_view_type sv)
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{
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assign(sv);
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}
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template<std::size_t N, class CharT, class Traits>
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template<class T, class>
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static_string<N, CharT, Traits>::
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static_string(T const& t, size_type pos, size_type n)
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{
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assign(t, pos, n);
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}
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//
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// (assignment)
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//
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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operator=(CharT const* s) ->
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static_string&
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{
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auto const count = Traits::length(s);
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if(count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"count > max_size()"});
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n_ = count;
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Traits::copy(&s_[0], s, n_ + 1);
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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assign(size_type count, CharT ch) ->
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static_string&
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{
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if(count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"count > max_size()"});
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n_ = count;
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Traits::assign(&s_[0], n_, ch);
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term();
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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assign(static_string const& str) ->
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static_string&
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{
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n_ = str.n_;
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auto const n = n_ + 1;
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BOOST_BEAST_ASSUME(n != 0);
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Traits::copy(&s_[0], &str.s_[0], n);
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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auto
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static_string<N, CharT, Traits>::
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assign(static_string<M, CharT, Traits> const& str,
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size_type pos, size_type count) ->
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static_string&
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{
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auto const ss = str.substr(pos, count);
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return assign(ss.data(), ss.size());
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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assign(CharT const* s, size_type count) ->
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static_string&
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{
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if(count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"count > max_size()"});
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n_ = count;
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Traits::copy(&s_[0], s, n_);
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term();
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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template<class InputIt>
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auto
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static_string<N, CharT, Traits>::
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assign(InputIt first, InputIt last) ->
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static_string&
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{
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std::size_t const n = std::distance(first, last);
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if(n > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"n > max_size()"});
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n_ = n;
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for(auto it = &s_[0]; first != last; ++it, ++first)
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Traits::assign(*it, *first);
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term();
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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template<class T>
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auto
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static_string<N, CharT, Traits>::
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assign(T const& t, size_type pos, size_type count) ->
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typename std::enable_if<std::is_convertible<T,
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string_view_type>::value, static_string&>::type
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{
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auto const sv = string_view_type(t).substr(pos, count);
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if(sv.size() > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"sv.size() > max_size()"});
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n_ = sv.size();
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Traits::copy(&s_[0], &sv[0], n_);
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term();
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return *this;
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}
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//
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// Element access
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//
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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at(size_type pos) ->
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reference
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{
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if(pos >= size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"pos >= size()"});
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return s_[pos];
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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at(size_type pos) const ->
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const_reference
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{
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if(pos >= size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"pos >= size()"});
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return s_[pos];
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}
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//
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// Capacity
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//
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template<std::size_t N, class CharT, class Traits>
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void
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static_string<N, CharT, Traits>::
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reserve(std::size_t n)
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{
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if(n > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"n > max_size()"});
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}
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//
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// Operations
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//
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template<std::size_t N, class CharT, class Traits>
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void
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static_string<N, CharT, Traits>::
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clear()
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{
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n_ = 0;
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term();
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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insert(size_type index, size_type count, CharT ch) ->
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static_string&
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{
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if(index > size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"index > size()"});
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insert(begin() + index, count, ch);
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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insert(size_type index, CharT const* s, size_type count) ->
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static_string&
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{
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if(index > size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"index > size()"});
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if(size() + count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"size() + count > max_size()"});
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Traits::move(
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&s_[index + count], &s_[index], size() - index);
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n_ += count;
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Traits::copy(&s_[index], s, count);
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term();
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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auto
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static_string<N, CharT, Traits>::
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insert(size_type index,
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static_string<M, CharT, Traits> const& str,
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size_type index_str, size_type count) ->
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static_string&
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{
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auto const ss = str.substr(index_str, count);
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return insert(index, ss.data(), ss.size());
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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insert(const_iterator pos, size_type count, CharT ch) ->
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iterator
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{
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if(size() + count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"size() + count() > max_size()"});
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auto const index = pos - &s_[0];
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Traits::move(
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&s_[index + count], &s_[index], size() - index);
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n_ += count;
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Traits::assign(&s_[index], count, ch);
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term();
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return &s_[index];
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}
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template<std::size_t N, class CharT, class Traits>
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template<class InputIt>
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auto
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static_string<N, CharT, Traits>::
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insert(const_iterator pos, InputIt first, InputIt last) ->
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typename std::enable_if<
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detail::is_input_iterator<InputIt>::value,
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iterator>::type
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{
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std::size_t const count = std::distance(first, last);
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if(size() + count > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"size() + count > max_size()"});
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std::size_t const index = pos - begin();
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Traits::move(
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&s_[index + count], &s_[index], size() - index);
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n_ += count;
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for(auto it = begin() + index;
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first != last; ++it, ++first)
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Traits::assign(*it, *first);
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term();
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return begin() + index;
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}
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template<std::size_t N, class CharT, class Traits>
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template<class T>
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auto
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static_string<N, CharT, Traits>::
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insert(size_type index, const T& t,
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size_type index_str, size_type count) ->
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typename std::enable_if<std::is_convertible<
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T const&, string_view_type>::value &&
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! std::is_convertible<T const&, CharT const*>::value,
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static_string&>::type
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{
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auto const str =
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string_view_type(t).substr(index_str, count);
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return insert(index, str.data(), str.size());
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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erase(size_type index, size_type count) ->
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static_string&
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{
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if(index > size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"index > size()"});
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auto const n = (std::min)(count, size() - index);
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Traits::move(
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&s_[index], &s_[index + n], size() - (index + n) + 1);
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n_ -= n;
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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erase(const_iterator pos) ->
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iterator
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{
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erase(pos - begin(), 1);
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return begin() + (pos - begin());
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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erase(const_iterator first, const_iterator last) ->
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iterator
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{
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erase(first - begin(),
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std::distance(first, last));
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return begin() + (first - begin());
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}
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template<std::size_t N, class CharT, class Traits>
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void
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static_string<N, CharT, Traits>::
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push_back(CharT ch)
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{
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if(size() >= max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"size() >= max_size()"});
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Traits::assign(s_[n_++], ch);
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term();
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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auto
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static_string<N, CharT, Traits>::
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append(static_string<M, CharT, Traits> const& str,
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size_type pos, size_type count) ->
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static_string&
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{
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// Valid range is [0, size)
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if(pos >= str.size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"pos > str.size()"});
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string_view_type const ss{&str.s_[pos],
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(std::min)(count, str.size() - pos)};
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insert(size(), ss.data(), ss.size());
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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substr(size_type pos, size_type count) const ->
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string_view_type
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{
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if(pos > size())
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BOOST_THROW_EXCEPTION(std::out_of_range{
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"pos > size()"});
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return{&s_[pos], (std::min)(count, size() - pos)};
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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copy(CharT* dest, size_type count, size_type pos) const ->
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size_type
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{
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auto const str = substr(pos, count);
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Traits::copy(dest, str.data(), str.size());
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return str.size();
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}
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template<std::size_t N, class CharT, class Traits>
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void
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static_string<N, CharT, Traits>::
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resize(std::size_t n)
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{
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if(n > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"n > max_size()"});
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if(n > n_)
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Traits::assign(&s_[n_], n - n_, CharT{});
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n_ = n;
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term();
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}
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template<std::size_t N, class CharT, class Traits>
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void
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static_string<N, CharT, Traits>::
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resize(std::size_t n, CharT c)
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{
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if(n > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"n > max_size()"});
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if(n > n_)
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Traits::assign(&s_[n_], n - n_, c);
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n_ = n;
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term();
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}
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template<std::size_t N, class CharT, class Traits>
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void
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static_string<N, CharT, Traits>::
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swap(static_string& str)
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{
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static_string tmp(str);
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str.n_ = n_;
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Traits::copy(&str.s_[0], &s_[0], n_ + 1);
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n_ = tmp.n_;
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Traits::copy(&s_[0], &tmp.s_[0], n_ + 1);
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}
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template<std::size_t N, class CharT, class Traits>
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template<std::size_t M>
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void
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static_string<N, CharT, Traits>::
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swap(static_string<M, CharT, Traits>& str)
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{
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if(size() > str.max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"size() > str.max_size()"});
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if(str.size() > max_size())
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BOOST_THROW_EXCEPTION(std::length_error{
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"str.size() > max_size()"});
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static_string tmp(str);
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str.n_ = n_;
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Traits::copy(&str.s_[0], &s_[0], n_ + 1);
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n_ = tmp.n_;
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Traits::copy(&s_[0], &tmp.s_[0], n_ + 1);
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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assign_char(CharT ch, std::true_type) ->
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static_string&
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{
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n_ = 1;
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Traits::assign(s_[0], ch);
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term();
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return *this;
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}
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template<std::size_t N, class CharT, class Traits>
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auto
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static_string<N, CharT, Traits>::
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assign_char(CharT, std::false_type) ->
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static_string&
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{
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BOOST_THROW_EXCEPTION(std::length_error{
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"max_size() == 0"});
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}
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template<class Integer, class>
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static_string<detail::max_digits(sizeof(Integer))>
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to_static_string(Integer x)
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{
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using CharT = char;
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using Traits = std::char_traits<CharT>;
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BOOST_STATIC_ASSERT(std::is_integral<Integer>::value);
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char buf[detail::max_digits(sizeof(Integer))];
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auto last = buf + sizeof(buf);
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auto it = detail::raw_to_string<
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CharT, Integer, Traits>(last, sizeof(buf), x);
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static_string<detail::max_digits(sizeof(Integer))> s;
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s.resize(static_cast<std::size_t>(last - it));
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auto p = s.data();
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while(it < last)
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Traits::assign(*p++, *it++);
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return s;
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}
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} // beast
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} // boost
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#endif
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