algorithm/hash.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:
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// The above copyright notice and this permission notice shall be included in all
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_HASH_HPP
#define CRYPTO3_HASH_HPP
 
#include <nil/crypto3/hash/hash_value.hpp>
#include <nil/crypto3/hash/hash_state.hpp>
 
#include <nil/crypto3/detail/type_traits.hpp>
 
namespace nil {
    namespace crypto3 {
        template<typename Hash, typename InputIterator, typename OutputIterator>
        typename std::enable_if<!boost::accumulators::detail::is_accumulator_set<OutputIterator>::value,
                                OutputIterator>::type
            hash(InputIterator first, InputIterator last, OutputIterator out) {
            typedef accumulator_set<Hash> HashAccumulator;
 
            typedef hashes::detail::value_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::itr_hash_impl<StreamHashImpl, OutputIterator> HashImpl;
 
            return HashImpl(first, last, std::move(out), HashAccumulator());
        }
 
        template<typename Hash, typename InputIterator, typename HashAccumulator = accumulator_set<Hash>>
        typename std::enable_if<boost::accumulators::detail::is_accumulator_set<HashAccumulator>::value,
                                HashAccumulator>::type &
            hash(InputIterator first, InputIterator last, HashAccumulator &sh) {
            typedef hashes::detail::ref_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::range_hash_impl<StreamHashImpl> HashImpl;
 
            return HashImpl(first, last, std::forward<HashAccumulator>(sh));
        }
 
        template<typename Hash, typename InputIterator, typename HashAccumulator = accumulator_set<Hash>>
        hashes::detail::range_hash_impl<hashes::detail::value_hash_impl<typename std::enable_if<
            boost::accumulators::detail::is_accumulator_set<HashAccumulator>::value, HashAccumulator>::type>>
            hash(InputIterator first, InputIterator last) {
            typedef hashes::detail::value_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::range_hash_impl<StreamHashImpl> HashImpl;
 
            return HashImpl(first, last, HashAccumulator());
        }
 
        template<typename Hash, typename SinglePassRange, typename OutputIterator>
        typename std::enable_if<::nil::crypto3::detail::is_iterator<OutputIterator>::value, OutputIterator>::type
            hash(const SinglePassRange &rng, OutputIterator out) {
            typedef accumulator_set<Hash> HashAccumulator;
 
            typedef hashes::detail::value_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::itr_hash_impl<StreamHashImpl, OutputIterator> HashImpl;
 
            return HashImpl(rng, std::move(out), HashAccumulator());
        }
 
        template<typename Hash, typename SinglePassRange, typename HashAccumulator = accumulator_set<Hash>>
        typename std::enable_if<boost::accumulators::detail::is_accumulator_set<HashAccumulator>::value,
                                HashAccumulator>::type &
            hash(const SinglePassRange &rng, HashAccumulator &sh) {
            typedef hashes::detail::ref_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::range_hash_impl<StreamHashImpl> HashImpl;
 
            return HashImpl(rng, std::forward<HashAccumulator>(sh));
        }
 
        template<typename Hash, typename SinglePassRange, typename HashAccumulator = accumulator_set<Hash>>
        hashes::detail::range_hash_impl<hashes::detail::value_hash_impl<HashAccumulator>>
            hash(const SinglePassRange &r) {
 
            typedef hashes::detail::value_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::range_hash_impl<StreamHashImpl> HashImpl;
 
            return HashImpl(r, HashAccumulator());
        }
 
        template<typename Hash, typename T, typename OutputIterator>
        typename std::enable_if<::nil::crypto3::detail::is_iterator<OutputIterator>::value, OutputIterator>::type
            hash(std::initializer_list<T> list, OutputIterator out) {
            typedef accumulator_set<Hash> HashAccumulator;
 
            typedef hashes::detail::value_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::itr_hash_impl<StreamHashImpl, OutputIterator> HashImpl;
 
            return HashImpl(list, std::move(out), HashAccumulator());
        }
 
        template<typename Hash, typename T, typename HashAccumulator = accumulator_set<Hash>>
        typename std::enable_if<boost::accumulators::detail::is_accumulator_set<HashAccumulator>::value,
                                HashAccumulator>::type &
            hash(std::initializer_list<T> rng, HashAccumulator &sh) {
            typedef hashes::detail::ref_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::range_hash_impl<StreamHashImpl> HashImpl;
 
            return HashImpl(rng, std::forward<HashAccumulator>(sh));
        }
 
        template<typename Hash, typename T, typename HashAccumulator = accumulator_set<Hash>>
        hashes::detail::range_hash_impl<hashes::detail::value_hash_impl<HashAccumulator>>
            hash(std::initializer_list<T> r) {
 
            typedef hashes::detail::value_hash_impl<HashAccumulator> StreamHashImpl;
            typedef hashes::detail::range_hash_impl<StreamHashImpl> HashImpl;
 
            return HashImpl(r, HashAccumulator());
        }
    }    // namespace crypto3
}    // namespace nil
 
#endif    // CRYPTO3_HASH_HPP