mirror of
https://github.com/boostorg/json.git
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465 lines
9.3 KiB
C++
465 lines
9.3 KiB
C++
//
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// Copyright (c) 2018-2019 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/vinniefalco/json
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//
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//#define RAPIDJSON_SSE42
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#include "lib/nlohmann/single_include/nlohmann/json.hpp"
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#include "lib/rapidjson/include/rapidjson/rapidjson.h"
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#include "lib/rapidjson/include/rapidjson/document.h"
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#include "lib/rapidjson/include/rapidjson/writer.h"
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#include "lib/rapidjson/include/rapidjson/stringbuffer.h"
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#include <boost/json.hpp>
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#include <boost/beast/_experimental/unit_test/dstream.hpp>
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#include <chrono>
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#include <iostream>
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#include <memory>
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#include <cstdio>
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#include <vector>
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/*
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References
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https://github.com/nst/JSONTestSuite
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http://seriot.ch/parsing_json.php
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*/
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namespace beast = boost::beast;
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namespace boost {
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namespace json {
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using clock_type = std::chrono::steady_clock;
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using string_view = boost::string_view;
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beast::unit_test::dstream dout{std::cerr};
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//----------------------------------------------------------
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class any_impl
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{
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public:
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virtual ~any_impl() = default;
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virtual string_view name() const noexcept = 0;
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virtual void parse(string_view s, int repeat) const = 0;
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virtual void serialize(string_view s, int repeat) const = 0;
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};
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//----------------------------------------------------------
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class boost_impl : public any_impl
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{
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public:
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string_view
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name() const noexcept override
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{
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return "boost(block)";
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}
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void
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parse(
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string_view s,
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int repeat) const override
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{
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while(repeat--)
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{
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scoped_storage<
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block_storage> ss;
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json::parse(s, ss);
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}
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}
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void
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serialize(
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string_view s,
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int repeat) const override
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{
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scoped_storage<
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block_storage> ss;
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auto jv = json::parse(s, ss);
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while(repeat--)
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to_string(jv);
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}
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};
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//----------------------------------------------------------
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class boost_default_impl : public any_impl
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{
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public:
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string_view
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name() const noexcept override
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{
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return "boost(default)";
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}
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void
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parse(
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string_view s,
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int repeat) const override
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{
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while(repeat--)
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json::parse(s);
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}
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void
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serialize(
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string_view s,
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int repeat) const override
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{
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auto jv = json::parse(s);
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while(repeat--)
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to_string(jv);
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}
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};
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//----------------------------------------------------------
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class boost_vec_impl : public any_impl
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{
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struct vec_parser : basic_parser
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{
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std::vector<double> vec_;
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double d_ = 0;
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vec_parser()
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{
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}
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~vec_parser()
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{
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}
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void
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on_document_begin(
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error_code&) override
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{
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}
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void
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on_document_end(
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error_code&) override
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{
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}
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void
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on_object_begin(
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error_code&) override
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{
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}
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void
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on_object_end(
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error_code&) override
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{
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}
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void
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on_array_begin(
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error_code&) override
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{
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}
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void
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on_array_end(
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error_code&) override
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{
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}
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void
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on_key_part(
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string_view,
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error_code&) override
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{
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}
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void
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on_key(
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string_view,
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error_code&) override
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{
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}
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void
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on_string_part(
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string_view,
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error_code&) override
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{
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}
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void
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on_string(
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string_view,
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error_code&) override
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{
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}
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void
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on_int64(
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int64_t,
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error_code&) override
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{
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}
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void
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on_uint64(
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uint64_t,
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error_code&) override
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{
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}
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void
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on_double(
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double d,
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error_code&) override
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{
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vec_.push_back(d);
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}
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void
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on_bool(
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bool,
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error_code&) override
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{
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}
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void
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on_null(error_code&) override
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{
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}
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};
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public:
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string_view
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name() const noexcept override
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{
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return "boost(vec)";
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}
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void
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parse(
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string_view s,
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int repeat) const override
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{
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while(repeat--)
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{
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error_code ec;
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vec_parser p;
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p.write(s.data(), s.size(), ec);
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}
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}
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void
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serialize(
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string_view s,
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int repeat) const override
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{
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auto jv = json::parse(s);
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while(repeat--)
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to_string(jv);
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}
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};
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//----------------------------------------------------------
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struct rapidjson_impl : public any_impl
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{
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string_view
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name() const noexcept override
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{
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return "rapidjson";
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}
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void
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parse(string_view s, int repeat) const override
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{
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while(repeat--)
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{
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rapidjson::Document d;
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d.Parse(s.data(), s.size());
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}
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}
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void
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serialize(string_view s, int repeat) const override
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{
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rapidjson::Document d;
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d.Parse(s.data(), s.size());
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while(repeat--)
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{
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rapidjson::StringBuffer st;
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st.Clear();
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rapidjson::Writer<
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rapidjson::StringBuffer> wr(st);
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d.Accept(wr);
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}
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}
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};
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//----------------------------------------------------------
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struct nlohmann_impl : public any_impl
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{
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string_view
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name() const noexcept override
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{
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return "nlohmann";
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}
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void
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parse(string_view s, int repeat) const override
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{
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while(repeat--)
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nlohmann::json::parse(
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s.begin(), s.end());
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}
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void
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serialize(string_view s, int repeat) const override
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{
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auto jv = nlohmann::json::parse(
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s.begin(), s.end());
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while(repeat--)
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auto st = jv.dump();
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}
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};
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//----------------------------------------------------------
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struct file_item
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{
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string_view name;
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std::string text;
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};
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using file_list = std::vector<file_item>;
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std::string
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load_file(char const* path)
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{
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FILE* f = fopen(path, "rb");
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fseek(f, 0, SEEK_END);
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auto const size = ftell(f);
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std::string s;
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s.resize(size);
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fseek(f, 0, SEEK_SET);
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fread(&s[0], 1, size, f);
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fclose(f);
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return s;
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}
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void
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benchParse(
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file_list const& vs,
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std::vector<std::unique_ptr<
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any_impl const>> const& vi)
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{
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for(unsigned i = 0; i < vs.size(); ++i)
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{
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dout <<
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"Parse File " << std::to_string(i+1) <<
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" " << vs[i].name << " (" <<
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std::to_string(vs[i].text.size()) << " bytes)" <<
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std::endl;
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for(unsigned j = 0; j < vi.size(); ++j)
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{
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for(unsigned k = 0; k < 7; ++k)
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{
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auto const when = clock_type::now();
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vi[j]->parse(vs[i].text, 250);
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auto const ms = std::chrono::duration_cast<
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std::chrono::milliseconds>(
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clock_type::now() - when).count();
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if(k > 4)
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dout << " " << vi[j]->name() << ": " <<
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std::to_string(ms) << "ms" <<
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std::endl;
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}
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}
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dout << std::endl;
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}
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}
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void
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benchSerialize(
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file_list const& vs,
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std::vector<std::unique_ptr<
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any_impl const>> const& vi)
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{
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for(unsigned i = 0; i < vs.size(); ++i)
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{
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dout <<
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"Serialize File " << std::to_string(i+1) <<
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" " << vs[i].name << " (" <<
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std::to_string(vs[i].text.size()) << " bytes)" <<
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std::endl;
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for(unsigned j = 0; j < vi.size(); ++j)
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{
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for(unsigned k = 0; k < 7; ++k)
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{
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auto const when = clock_type::now();
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vi[j]->serialize(vs[i].text, 1000);
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auto const ms = std::chrono::duration_cast<
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std::chrono::milliseconds>(
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clock_type::now() - when).count();
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if(k > 4)
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dout << " " << vi[j]->name() << ": " <<
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std::to_string(ms) << "ms" <<
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std::endl;
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}
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}
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dout << std::endl;
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}
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}
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} // json
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} // boost
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int
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main(
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int const argc,
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char const* const* const argv)
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{
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using namespace boost::json;
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file_list vs;
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if(argc > 1)
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{
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vs.reserve(argc - 1);
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for(int i = 1; i < argc; ++i)
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vs.emplace_back(
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file_item{argv[i],
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load_file(argv[i])});
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}
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try
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{
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std::vector<std::unique_ptr<any_impl const>> vi;
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vi.reserve(10);
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//vi.emplace_back(new boost_default_impl);
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//.emplace_back(new boost_impl);
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//vi.emplace_back(new boost_vec_impl);
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//vi.emplace_back(new rapidjson_impl);
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vi.emplace_back(new nlohmann_impl);
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//benchParse(vs, vi);
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benchSerialize(vs, vi);
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}
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catch(system_error const& se)
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{
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dout << se.what() << std::endl;
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}
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return 0;
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}
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