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49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
// Copyright 2024, 2025 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/hash2/md5.hpp>
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#include <boost/hash2/hash_append.hpp>
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#include <boost/json.hpp>
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#include <type_traits>
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#include <iostream>
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namespace boost
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{
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namespace json
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{
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template<class Provider, class Hash, class Flavor>
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void tag_invoke( boost::hash2::hash_append_tag const&, Provider const&,
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Hash& h, Flavor const& f, boost::json::value const* v )
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{
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boost::hash2::hash_append( h, f, v->kind() ); // TODO: int64 vs uint64
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boost::json::visit( [&](auto const& w){
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boost::hash2::hash_append( h, f, w ); }, *v );
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}
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} // namespace json
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} // namespace boost
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template<class T> auto md5( T const& v )
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{
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boost::hash2::md5_128 hash;
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boost::hash2::hash_append( hash, {}, v );
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return hash.result();
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}
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static constexpr char const* json = R"(
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{
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"x1": -5,
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"x2": 3.14,
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"x3": "str",
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"x4": [ null, true, false ]
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}
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)";
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int main()
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{
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auto jv = boost::json::parse( json );
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std::cout << md5( jv ) << std::endl;
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}
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