/**
	This file is a part of rexy's general purpose library
	Copyright (C) 2020 rexy712

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Affero General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Affero General Public License for more details.

	You should have received a copy of the GNU Affero General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef REXY_BINARY_STRING_CONV_HPP
#define REXY_BINARY_STRING_CONV_HPP

#include "rexy/string.hpp"
#include "rexy/binary.hpp"
#include <cstring> //memcpy

namespace rexy{
	template<class Al, class Str = rexy::string, detail::enable_if_concrete_string<Str> = 0>
	auto binary_to_string(const binary_data<Al>& b)
		noexcept(std::is_nothrow_constructible<Str, decltype(b.size())>::value)
	{
		Str s(b.size()+1);
		s.append(b.get(), b.size());
		return s;
	}
	template<class Al, class Str = rexy::string, detail::enable_if_concrete_string<Str> = 0, std::enable_if_t<std::is_same<std::decay_t<Al>,typename Str::allocator_type>::value,int> = 0>
	auto binary_to_string(binary_data<Al>&& b)noexcept{
		return Str(rexy::steal(b.release()), b.size());
	}
	template<class Bin = rexy::binary, detail::enable_if_binary<Bin> = 0>
	auto string_to_binary(const string_base& s)
		noexcept(std::is_nothrow_constructible<Bin, decltype(s.length())>::value &&
		         noexcept(std::decay_t<Bin>::allocator_type::allocate(0)))
	{
		Bin b(s.length()+1);
		b.append(s.get(), s.length()+1);
		return b;
	}
	template<class Al, class Bin = rexy::binary, detail::enable_if_binary<Bin> = 0, std::enable_if_t<std::is_same<std::decay_t<Al>,typename Bin::allocator_type>::value,int> = 0>
	auto string_to_binary(string_intermediary<Al>&& s)noexcept{
		return Bin(rexy::steal(s.release()), s.length());
	}
	template<class L, class R, detail::enable_if_binary<L> = 0, detail::enable_if_concrete_string<R> = 0>
	decltype(auto) operator+=(L& l, R&& r)
		noexcept(noexcept(std::decay_t<L>::allocator_type::allocate(0)) &&
		         noexcept(std::decay_t<L>::allocator_type::free(nullptr)))
	{
		l.append(r.get(), r.length()+1);
		return l;
	}
	template<class L, class R, detail::enable_if_binary<L> = 0, detail::enable_if_string<R> = 0, std::enable_if_t<!is_concrete_string<R>::value,int> = 0>
	decltype(auto) operator+=(L& l, R&& r)
		noexcept(std::is_nothrow_constructible<rexy::string,R&&>::value &&
		         (noexcept(std::decay_t<L>::allocator_type::allocate(0))))
	{
		rexy::string concrete = r;
		return (l += concrete);
	}
	template<class L, class R, detail::enable_if_concrete_string<L> = 0, detail::enable_if_binary<R> = 0>
	decltype(auto) operator+=(L& l, R&& r)
		noexcept(noexcept(std::decay_t<L>::allocator_type::allocate(0)) &&
		         noexcept(std::decay_t<L>::allocator_type::free(nullptr)))
	{
		l.append(r.get(), r.size());
		return l;
	}
} //namespace rexy

#endif