hash/include/nil/crypto3/hash/detail/state_adder.hpp

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//---------------------------------------------------------------------------//
// Copyright (c) 2018-2020 Mikhail Komarov <nemo@nil.foundation>
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_HASH_DETAIL_STATE_ADDER_HPP
#define CRYPTO3_HASH_DETAIL_STATE_ADDER_HPP
 
namespace nil {
    namespace crypto3 {
        namespace hashes {
            namespace detail {
                struct state_adder {
                    template<typename T>
                    void operator()(T &s1, T const &s2) {
                        typedef typename T::size_type size_type;
                        size_type n = (s2.size() < s1.size() ? s2.size() : s1.size());
                        for (typename T::size_type i = 0; i < n; ++i) {
                            s1[i] += s2[i];
                        }
                    }
                };
 
            }    // namespace detail
        }        // namespace hashes
    }            // namespace crypto3
}    // namespace nil
 
#endif    // CRYPTO3_HASH_DETAIL_STATE_ADDER_HPP