mirror of
https://github.com/nlohmann/json.git
synced 2024-12-02 21:19:01 +08:00
1190 lines
44 KiB
C++
1190 lines
44 KiB
C++
// __ _____ _____ _____
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// __| | __| | | | JSON for Modern C++ (supporting code)
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// | | |__ | | | | | | version 3.11.3
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// |_____|_____|_____|_|___| https://github.com/nlohmann/json
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//
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// Copyright (c) 2013-2022 Niels Lohmann <http://nlohmann.me>.
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// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
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// SPDX-License-Identifier: MIT
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#include "doctest_compatibility.h"
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#include <nlohmann/json.hpp>
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using nlohmann::json;
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#ifdef JSON_TEST_NO_GLOBAL_UDLS
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using namespace nlohmann::literals; // NOLINT(google-build-using-namespace)
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#endif
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#include <iostream>
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#include <iterator>
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#include <sstream>
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#include <valarray>
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namespace
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{
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struct SaxEventLogger : public nlohmann::json_sax<json>
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{
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bool null() override
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{
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events.emplace_back("null()");
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return true;
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}
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bool boolean(bool val) override
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{
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events.emplace_back(val ? "boolean(true)" : "boolean(false)");
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return true;
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}
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bool number_integer(json::number_integer_t val) override
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{
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events.push_back("number_integer(" + std::to_string(val) + ")");
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return true;
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}
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bool number_unsigned(json::number_unsigned_t val) override
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{
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events.push_back("number_unsigned(" + std::to_string(val) + ")");
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return true;
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}
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bool number_float(json::number_float_t /*val*/, const std::string& s) override
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{
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events.push_back("number_float(" + s + ")");
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return true;
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}
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bool string(std::string& val) override
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{
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events.push_back("string(" + val + ")");
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return true;
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}
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bool binary(json::binary_t& val) override
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{
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std::string binary_contents = "binary(";
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std::string comma_space;
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for (auto b : val)
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{
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binary_contents.append(comma_space);
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binary_contents.append(std::to_string(static_cast<int>(b)));
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comma_space = ", ";
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}
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binary_contents.append(")");
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events.push_back(binary_contents);
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return true;
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}
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bool start_object(std::size_t elements) override
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{
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if (elements == static_cast<std::size_t>(-1))
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{
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events.emplace_back("start_object()");
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}
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else
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{
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events.push_back("start_object(" + std::to_string(elements) + ")");
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}
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return true;
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}
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bool key(std::string& val) override
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{
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events.push_back("key(" + val + ")");
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return true;
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}
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bool end_object() override
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{
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events.emplace_back("end_object()");
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return true;
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}
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bool start_array(std::size_t elements) override
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{
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if (elements == static_cast<std::size_t>(-1))
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{
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events.emplace_back("start_array()");
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}
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else
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{
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events.push_back("start_array(" + std::to_string(elements) + ")");
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}
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return true;
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}
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bool end_array() override
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{
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events.emplace_back("end_array()");
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return true;
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}
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bool parse_error(std::size_t position, const std::string& /*last_token*/, const json::exception& /*ex*/) override
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{
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events.push_back("parse_error(" + std::to_string(position) + ")");
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return false;
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}
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std::vector<std::string> events {}; // NOLINT(readability-redundant-member-init)
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};
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struct SaxEventLoggerExitAfterStartObject : public SaxEventLogger
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{
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bool start_object(std::size_t elements) override
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{
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if (elements == static_cast<std::size_t>(-1))
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{
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events.emplace_back("start_object()");
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}
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else
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{
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events.push_back("start_object(" + std::to_string(elements) + ")");
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}
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return false;
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}
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};
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struct SaxEventLoggerExitAfterKey : public SaxEventLogger
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{
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bool key(std::string& val) override
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{
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events.push_back("key(" + val + ")");
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return false;
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}
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};
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struct SaxEventLoggerExitAfterStartArray : public SaxEventLogger
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{
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bool start_array(std::size_t elements) override
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{
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if (elements == static_cast<std::size_t>(-1))
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{
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events.emplace_back("start_array()");
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}
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else
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{
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events.push_back("start_array(" + std::to_string(elements) + ")");
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}
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return false;
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}
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};
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template <typename T>
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class proxy_iterator
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{
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public:
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using iterator = typename T::iterator;
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using value_type = typename std::iterator_traits<iterator>::value_type;
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using reference = typename std::iterator_traits<iterator>::reference;
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using pointer = typename std::iterator_traits<iterator>::pointer;
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using difference_type =
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typename std::iterator_traits<iterator>::difference_type;
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using iterator_category = std::input_iterator_tag;
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proxy_iterator() = default;
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explicit proxy_iterator(iterator& it) : m_it(std::addressof(it)) {}
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proxy_iterator& operator++()
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{
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++*m_it;
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return *this;
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}
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proxy_iterator& operator--()
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{
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--*m_it;
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return *this;
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}
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bool operator==(const proxy_iterator& rhs) const
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{
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return (m_it && rhs.m_it) ? (*m_it == *rhs.m_it) : (m_it == rhs.m_it);
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}
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bool operator!=(const proxy_iterator& rhs) const
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{
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return !(*this == rhs);
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}
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reference operator*() const
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{
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return **m_it;
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}
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private:
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iterator* m_it = nullptr;
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};
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} // namespace
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TEST_CASE("deserialization")
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{
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SECTION("successful deserialization")
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{
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SECTION("stream")
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{
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std::stringstream ss1;
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std::stringstream ss2;
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std::stringstream ss3;
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ss1 << R"(["foo",1,2,3,false,{"one":1}])";
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ss2 << R"(["foo",1,2,3,false,{"one":1}])";
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ss3 << R"(["foo",1,2,3,false,{"one":1}])";
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json j = json::parse(ss1);
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CHECK(json::accept(ss2));
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CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
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SaxEventLogger l;
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CHECK(json::sax_parse(ss3, &l));
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CHECK(l.events.size() == 11);
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CHECK(l.events == std::vector<std::string>(
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{
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"start_array()", "string(foo)", "number_unsigned(1)",
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"number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
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"start_object()", "key(one)", "number_unsigned(1)",
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"end_object()", "end_array()"
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}));
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}
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SECTION("string literal")
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{
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const auto* s = R"(["foo",1,2,3,false,{"one":1}])";
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json j = json::parse(s);
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CHECK(json::accept(s));
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CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
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SaxEventLogger l;
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CHECK(json::sax_parse(s, &l));
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CHECK(l.events.size() == 11);
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CHECK(l.events == std::vector<std::string>(
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{
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"start_array()", "string(foo)", "number_unsigned(1)",
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"number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
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"start_object()", "key(one)", "number_unsigned(1)",
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"end_object()", "end_array()"
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}));
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}
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SECTION("string_t")
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{
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json::string_t const s = R"(["foo",1,2,3,false,{"one":1}])";
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json j = json::parse(s);
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CHECK(json::accept(s));
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CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
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SaxEventLogger l;
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CHECK(json::sax_parse(s, &l));
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CHECK(l.events.size() == 11);
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CHECK(l.events == std::vector<std::string>(
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{
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"start_array()", "string(foo)", "number_unsigned(1)",
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"number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
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"start_object()", "key(one)", "number_unsigned(1)",
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"end_object()", "end_array()"
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}));
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}
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SECTION("operator<<")
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{
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std::stringstream ss;
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ss << R"(["foo",1,2,3,false,{"one":1}])";
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json j;
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j << ss;
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CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
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}
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SECTION("operator>>")
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{
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std::stringstream ss;
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ss << R"(["foo",1,2,3,false,{"one":1}])";
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json j;
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ss >> j;
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CHECK(j == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
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}
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SECTION("user-defined string literal")
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{
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CHECK("[\"foo\",1,2,3,false,{\"one\":1}]"_json == json({"foo", 1, 2, 3, false, {{"one", 1}}}));
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}
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}
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SECTION("unsuccessful deserialization")
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{
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SECTION("stream")
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{
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std::stringstream ss1;
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std::stringstream ss3;
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std::stringstream ss4;
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std::stringstream ss5;
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ss1 << R"(["foo",1,2,3,false,{"one":1})";
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ss3 << R"(["foo",1,2,3,false,{"one":1})";
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ss4 << R"(["foo",1,2,3,false,{"one":1})";
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ss5 << R"(["foo",1,2,3,false,{"one":1})";
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json _;
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CHECK_THROWS_WITH_AS(_ = json::parse(ss1), "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
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CHECK(!json::accept(ss3));
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json j_error;
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CHECK_NOTHROW(j_error = json::parse(ss4, nullptr, false));
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CHECK(j_error.is_discarded());
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SaxEventLogger l;
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CHECK(!json::sax_parse(ss5, &l));
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CHECK(l.events.size() == 11);
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CHECK(l.events == std::vector<std::string>(
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{
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"start_array()", "string(foo)", "number_unsigned(1)",
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"number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
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"start_object()", "key(one)", "number_unsigned(1)",
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"end_object()", "parse_error(29)"
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}));
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}
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SECTION("string")
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{
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json::string_t const s = R"(["foo",1,2,3,false,{"one":1})";
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json _;
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CHECK_THROWS_WITH_AS(_ = json::parse(s), "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
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CHECK(!json::accept(s));
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json j_error;
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CHECK_NOTHROW(j_error = json::parse(s, nullptr, false));
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CHECK(j_error.is_discarded());
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SaxEventLogger l;
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CHECK(!json::sax_parse(s, &l));
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CHECK(l.events.size() == 11);
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CHECK(l.events == std::vector<std::string>(
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{
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"start_array()", "string(foo)", "number_unsigned(1)",
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"number_unsigned(2)", "number_unsigned(3)", "boolean(false)",
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"start_object()", "key(one)", "number_unsigned(1)",
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"end_object()", "parse_error(29)"
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}));
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}
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SECTION("operator<<")
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{
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std::stringstream ss;
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ss << R"(["foo",1,2,3,false,{"one":1})";
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json j;
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CHECK_THROWS_WITH_AS(j << ss, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
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}
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SECTION("operator>>")
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{
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std::stringstream ss;
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ss << R"(["foo",1,2,3,false,{"one":1})";
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json j;
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CHECK_THROWS_WITH_AS(ss >> j, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
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}
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SECTION("user-defined string literal")
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{
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CHECK_THROWS_WITH_AS("[\"foo\",1,2,3,false,{\"one\":1}"_json, "[json.exception.parse_error.101] parse error at line 1, column 29: syntax error while parsing array - unexpected end of input; expected ']'", json::parse_error&);
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}
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}
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SECTION("contiguous containers")
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{
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SECTION("directly")
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{
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SECTION("from std::vector")
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{
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std::vector<uint8_t> const v = {'t', 'r', 'u', 'e'};
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CHECK(json::parse(v) == json(true));
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CHECK(json::accept(v));
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SaxEventLogger l;
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CHECK(json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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}
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SECTION("from std::array")
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{
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std::array<uint8_t, 5> const v { {'t', 'r', 'u', 'e'} };
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CHECK(json::parse(v) == json(true));
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CHECK(json::accept(v));
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SaxEventLogger l;
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CHECK(json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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}
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SECTION("from array")
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{
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uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
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CHECK(json::parse(v) == json(true));
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CHECK(json::accept(v));
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SaxEventLogger l;
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CHECK(json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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}
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SECTION("from chars")
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{
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auto* v = new uint8_t[5]; // NOLINT(cppcoreguidelines-owning-memory)
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v[0] = 't';
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v[1] = 'r';
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v[2] = 'u';
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v[3] = 'e';
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v[4] = '\0';
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CHECK(json::parse(v) == json(true));
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CHECK(json::accept(v));
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SaxEventLogger l;
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CHECK(json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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delete[] v; // NOLINT(cppcoreguidelines-owning-memory)
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}
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SECTION("from std::string")
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{
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std::string const v = {'t', 'r', 'u', 'e'};
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CHECK(json::parse(v) == json(true));
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CHECK(json::accept(v));
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SaxEventLogger l;
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CHECK(json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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}
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SECTION("from std::initializer_list")
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{
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std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
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CHECK(json::parse(v) == json(true));
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CHECK(json::accept(v));
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SaxEventLogger l;
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CHECK(json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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}
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SECTION("empty container")
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{
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std::vector<uint8_t> const v;
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json _;
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CHECK_THROWS_AS(_ = json::parse(v), json::parse_error&);
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CHECK(!json::accept(v));
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SaxEventLogger l;
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CHECK(!json::sax_parse(v, &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"parse_error(1)"}));
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}
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}
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SECTION("via iterator range")
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{
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SECTION("from std::vector")
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{
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std::vector<uint8_t> v = {'t', 'r', 'u', 'e'};
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CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
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CHECK(json::accept(std::begin(v), std::end(v)));
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SaxEventLogger l;
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CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
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CHECK(l.events.size() == 1);
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CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
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}
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SECTION("from std::array")
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{
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std::array<uint8_t, 5> v { {'t', 'r', 'u', 'e'} };
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CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
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CHECK(json::accept(std::begin(v), std::end(v)));
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SaxEventLogger l;
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CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
|
|
}
|
|
|
|
SECTION("from array")
|
|
{
|
|
uint8_t v[] = {'t', 'r', 'u', 'e'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
|
|
CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
|
|
CHECK(json::accept(std::begin(v), std::end(v)));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
|
|
}
|
|
|
|
SECTION("from std::string")
|
|
{
|
|
std::string v = {'t', 'r', 'u', 'e'};
|
|
CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
|
|
CHECK(json::accept(std::begin(v), std::end(v)));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
|
|
}
|
|
|
|
SECTION("from std::initializer_list")
|
|
{
|
|
std::initializer_list<uint8_t> const v = {'t', 'r', 'u', 'e'};
|
|
CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
|
|
CHECK(json::accept(std::begin(v), std::end(v)));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
|
|
}
|
|
|
|
SECTION("from std::valarray")
|
|
{
|
|
std::valarray<uint8_t> v = {'t', 'r', 'u', 'e'};
|
|
CHECK(json::parse(std::begin(v), std::end(v)) == json(true));
|
|
CHECK(json::accept(std::begin(v), std::end(v)));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
|
|
}
|
|
|
|
SECTION("with empty range")
|
|
{
|
|
std::vector<uint8_t> v;
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(1)"}));
|
|
}
|
|
|
|
SECTION("iterator_input_adapter advances iterators correctly")
|
|
{
|
|
using nlohmann::json;
|
|
using nlohmann::detail::input_format_t;
|
|
using nlohmann::detail::json_sax_dom_parser;
|
|
using proxy = proxy_iterator<std::string>;
|
|
|
|
std::string str1 = "[1]";
|
|
std::string str2 = "[2]";
|
|
std::string str = str1 + str2;
|
|
|
|
auto first = str.begin();
|
|
auto last = str.end();
|
|
json j;
|
|
json_sax_dom_parser<json> sax(j, true);
|
|
|
|
CHECK(json::sax_parse(proxy(first), proxy(last), &sax,
|
|
input_format_t::json, false));
|
|
CHECK(j.dump() == str1);
|
|
CHECK(std::string(first, last) == str2);
|
|
}
|
|
}
|
|
|
|
// these cases are required for 100% line coverage
|
|
SECTION("error cases")
|
|
{
|
|
SECTION("case 1")
|
|
{
|
|
std::array<std::uint8_t, 9> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u'}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(10)"}));
|
|
}
|
|
|
|
SECTION("case 2")
|
|
{
|
|
std::array<std::uint8_t, 10> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1'}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(11)"}));
|
|
}
|
|
|
|
SECTION("case 3")
|
|
{
|
|
std::array<std::uint8_t, 17> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', '\\', 'u', '1', '1', '1', '1', '1', '1', '1', '1'}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(18)"}));
|
|
}
|
|
|
|
SECTION("case 4")
|
|
{
|
|
std::array<std::uint8_t, 17> v = {{'\"', 'a', 'a', 'a', 'a', 'a', 'a', 'u', '1', '1', '1', '1', '1', '1', '1', '1', '\\'}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(18)"}));
|
|
}
|
|
|
|
SECTION("case 5")
|
|
{
|
|
std::array<std::uint8_t, 3> v = {{'\"', 0x7F, 0xC1}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(3)"}));
|
|
}
|
|
|
|
SECTION("case 6")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xDF, 0x7F}};
|
|
json _;
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(std::begin(v), std::end(v)), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - invalid string: ill-formed UTF-8 byte; last read: '\"\x7f\xdf\x7f'", json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 7")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xDF, 0xC0}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 8")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xE0, 0x9F}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 9")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xEF, 0xC0}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 10")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xED, 0x7F}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 11")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF0, 0x8F}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 12")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF0, 0xC0}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 13")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF3, 0x7F}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 14")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF3, 0xC0}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 15")
|
|
{
|
|
std::array<std::uint8_t, 4> v = {{'\"', 0x7F, 0xF4, 0x7F}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"parse_error(4)"}));
|
|
}
|
|
|
|
SECTION("case 16")
|
|
{
|
|
std::array<std::uint8_t, 6> v = {{'{', '\"', '\"', ':', '1', '1'}};
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(std::begin(v), std::end(v)), json::parse_error&);
|
|
CHECK(!json::accept(std::begin(v), std::end(v)));
|
|
|
|
json j_error;
|
|
CHECK_NOTHROW(j_error = json::parse(std::begin(v), std::end(v), nullptr, false));
|
|
CHECK(j_error.is_discarded());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(std::begin(v), std::end(v), &l));
|
|
CHECK(l.events.size() == 4);
|
|
CHECK(l.events == std::vector<std::string>(
|
|
{
|
|
"start_object()", "key()", "number_unsigned(11)",
|
|
"parse_error(7)"
|
|
}));
|
|
}
|
|
}
|
|
}
|
|
|
|
SECTION("ignoring byte-order marks")
|
|
{
|
|
std::string bom = "\xEF\xBB\xBF";
|
|
|
|
SECTION("BOM only")
|
|
{
|
|
json _;
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(bom), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
|
|
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom)), "[json.exception.parse_error.101] parse error at line 1, column 4: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal", json::parse_error&);
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(bom, &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(4)"
|
|
}));
|
|
}
|
|
|
|
SECTION("BOM and content")
|
|
{
|
|
CHECK(json::parse(bom + "1") == 1);
|
|
CHECK(json::parse(std::istringstream(bom + "1")) == 1);
|
|
|
|
SaxEventLogger l1;
|
|
SaxEventLogger l2;
|
|
CHECK(json::sax_parse(std::istringstream(bom + "1"), &l1));
|
|
CHECK(json::sax_parse(bom + "1", &l2));
|
|
CHECK(l1.events.size() == 1);
|
|
CHECK(l1.events == std::vector<std::string>(
|
|
{
|
|
"number_unsigned(1)"
|
|
}));
|
|
CHECK(l2.events.size() == 1);
|
|
CHECK(l2.events == std::vector<std::string>(
|
|
{
|
|
"number_unsigned(1)"
|
|
}));
|
|
}
|
|
|
|
SECTION("2 byte of BOM")
|
|
{
|
|
json _;
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(bom.substr(0, 2)), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'", json::parse_error&);
|
|
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom.substr(0, 2))), "[json.exception.parse_error.101] parse error at line 1, column 3: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF\xBB'", json::parse_error&);
|
|
|
|
SaxEventLogger l1;
|
|
SaxEventLogger l2;
|
|
CHECK(!json::sax_parse(std::istringstream(bom.substr(0, 2)), &l1));
|
|
CHECK(!json::sax_parse(bom.substr(0, 2), &l2));
|
|
CHECK(l1.events.size() == 1);
|
|
CHECK(l1.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(3)"
|
|
}));
|
|
CHECK(l2.events.size() == 1);
|
|
CHECK(l2.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(3)"
|
|
}));
|
|
}
|
|
|
|
SECTION("1 byte of BOM")
|
|
{
|
|
json _;
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(bom.substr(0, 1)), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'", json::parse_error&);
|
|
|
|
CHECK_THROWS_WITH_AS(_ = json::parse(std::istringstream(bom.substr(0, 1))), "[json.exception.parse_error.101] parse error at line 1, column 2: syntax error while parsing value - invalid BOM; must be 0xEF 0xBB 0xBF if given; last read: '\xEF'", json::parse_error&);
|
|
|
|
SaxEventLogger l1;
|
|
SaxEventLogger l2;
|
|
CHECK(!json::sax_parse(std::istringstream(bom.substr(0, 1)), &l1));
|
|
CHECK(!json::sax_parse(bom.substr(0, 1), &l2));
|
|
CHECK(l1.events.size() == 1);
|
|
CHECK(l1.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(2)"
|
|
}));
|
|
CHECK(l2.events.size() == 1);
|
|
CHECK(l2.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(2)"
|
|
}));
|
|
}
|
|
|
|
SECTION("variations")
|
|
{
|
|
// calculate variations of each byte of the BOM to make sure
|
|
// that the BOM and only the BOM is skipped
|
|
for (int i0 = -1; i0 < 2; ++i0)
|
|
{
|
|
for (int i1 = -1; i1 < 2; ++i1)
|
|
{
|
|
for (int i2 = -1; i2 < 2; ++i2)
|
|
{
|
|
// debug output for the variations
|
|
CAPTURE(i0)
|
|
CAPTURE(i1)
|
|
CAPTURE(i2)
|
|
|
|
std::string s;
|
|
s.push_back(static_cast<char>(bom[0] + i0));
|
|
s.push_back(static_cast<char>(bom[1] + i1));
|
|
s.push_back(static_cast<char>(bom[2] + i2));
|
|
|
|
if (i0 == 0 && i1 == 0 && i2 == 0)
|
|
{
|
|
// without any variation, we skip the BOM
|
|
CHECK(json::parse(s + "null") == json());
|
|
CHECK(json::parse(std::istringstream(s + "null")) == json());
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(s + "null", &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>(
|
|
{
|
|
"null()"
|
|
}));
|
|
}
|
|
else
|
|
{
|
|
// any variation is an error
|
|
json _;
|
|
CHECK_THROWS_AS(_ = json::parse(s + "null"), json::parse_error&);
|
|
CHECK_THROWS_AS(_ = json::parse(std::istringstream(s + "null")), json::parse_error&);
|
|
|
|
SaxEventLogger l;
|
|
CHECK(!json::sax_parse(s + "null", &l));
|
|
CHECK(l.events.size() == 1);
|
|
|
|
if (i0 != 0)
|
|
{
|
|
CHECK(l.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(1)"
|
|
}));
|
|
}
|
|
else if (i1 != 0)
|
|
{
|
|
CHECK(l.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(2)"
|
|
}));
|
|
}
|
|
else
|
|
{
|
|
CHECK(l.events == std::vector<std::string>(
|
|
{
|
|
"parse_error(3)"
|
|
}));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SECTION("preserve state after parsing")
|
|
{
|
|
std::istringstream s(bom + "123 456");
|
|
json j;
|
|
j << s;
|
|
CHECK(j == 123);
|
|
j << s;
|
|
CHECK(j == 456);
|
|
}
|
|
}
|
|
|
|
SECTION("SAX and early abort")
|
|
{
|
|
std::string const s = R"([1, ["string", 43.12], null, {"key1": true, "key2": false}])";
|
|
|
|
SaxEventLogger default_logger;
|
|
SaxEventLoggerExitAfterStartObject exit_after_start_object;
|
|
SaxEventLoggerExitAfterKey exit_after_key;
|
|
SaxEventLoggerExitAfterStartArray exit_after_start_array;
|
|
|
|
json::sax_parse(s, &default_logger);
|
|
CHECK(default_logger.events.size() == 14);
|
|
CHECK(default_logger.events == std::vector<std::string>(
|
|
{
|
|
"start_array()", "number_unsigned(1)", "start_array()",
|
|
"string(string)", "number_float(43.12)", "end_array()", "null()",
|
|
"start_object()", "key(key1)", "boolean(true)", "key(key2)",
|
|
"boolean(false)", "end_object()", "end_array()"
|
|
}));
|
|
|
|
json::sax_parse(s, &exit_after_start_object);
|
|
CHECK(exit_after_start_object.events.size() == 8);
|
|
CHECK(exit_after_start_object.events == std::vector<std::string>(
|
|
{
|
|
"start_array()", "number_unsigned(1)", "start_array()",
|
|
"string(string)", "number_float(43.12)", "end_array()", "null()",
|
|
"start_object()"
|
|
}));
|
|
|
|
json::sax_parse(s, &exit_after_key);
|
|
CHECK(exit_after_key.events.size() == 9);
|
|
CHECK(exit_after_key.events == std::vector<std::string>(
|
|
{
|
|
"start_array()", "number_unsigned(1)", "start_array()",
|
|
"string(string)", "number_float(43.12)", "end_array()", "null()",
|
|
"start_object()", "key(key1)"
|
|
}));
|
|
|
|
json::sax_parse(s, &exit_after_start_array);
|
|
CHECK(exit_after_start_array.events.size() == 1);
|
|
CHECK(exit_after_start_array.events == std::vector<std::string>(
|
|
{
|
|
"start_array()"
|
|
}));
|
|
}
|
|
|
|
SECTION("JSON Lines")
|
|
{
|
|
SECTION("Example file")
|
|
{
|
|
std::stringstream ss;
|
|
ss << R"({"name": "Gilbert", "wins": [["straight", "7♣"], ["one pair", "10♥"]]}
|
|
{"name": "Alexa", "wins": [["two pair", "4♠"], ["two pair", "9♠"]]}
|
|
{"name": "May", "wins": []}
|
|
{"name": "Deloise", "wins": [["three of a kind", "5♣"]]}
|
|
)";
|
|
|
|
std::string line;
|
|
int object_count = 0;
|
|
while (std::getline(ss, line))
|
|
{
|
|
++object_count;
|
|
CHECK(json::accept(line));
|
|
}
|
|
|
|
CHECK(object_count == 4);
|
|
}
|
|
|
|
SECTION("Example file without trailing newline")
|
|
{
|
|
std::stringstream ss;
|
|
ss << R"({"name": "Gilbert", "wins": [["straight", "7♣"], ["one pair", "10♥"]]}
|
|
{"name": "Alexa", "wins": [["two pair", "4♠"], ["two pair", "9♠"]]}
|
|
{"name": "May", "wins": []}
|
|
{"name": "Deloise", "wins": [["three of a kind", "5♣"]]})";
|
|
|
|
std::string line;
|
|
int object_count = 0;
|
|
while (std::getline(ss, line))
|
|
{
|
|
++object_count;
|
|
CHECK(json::accept(line));
|
|
}
|
|
|
|
CHECK(object_count == 4);
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_CASE_TEMPLATE("deserialization of different character types (ASCII)", T,
|
|
char, unsigned char, signed char,
|
|
wchar_t,
|
|
char16_t, char32_t,
|
|
std::uint8_t, std::int8_t,
|
|
std::int16_t, std::uint16_t,
|
|
std::int32_t, std::uint32_t)
|
|
{
|
|
std::vector<T> const v = {'t', 'r', 'u', 'e'};
|
|
CHECK(json::parse(v) == json(true));
|
|
CHECK(json::accept(v));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(v, &l));
|
|
CHECK(l.events.size() == 1);
|
|
CHECK(l.events == std::vector<std::string>({"boolean(true)"}));
|
|
}
|
|
|
|
TEST_CASE_TEMPLATE("deserialization of different character types (UTF-8)", T,
|
|
char, unsigned char, std::uint8_t)
|
|
{
|
|
// a star emoji
|
|
std::vector<T> const v = {'"', static_cast<T>(0xe2u), static_cast<T>(0xadu), static_cast<T>(0x90u), static_cast<T>(0xefu), static_cast<T>(0xb8u), static_cast<T>(0x8fu), '"'};
|
|
CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
|
|
CHECK(json::accept(v));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(v, &l));
|
|
CHECK(l.events.size() == 1);
|
|
}
|
|
|
|
TEST_CASE_TEMPLATE("deserialization of different character types (UTF-16)", T,
|
|
char16_t, std::uint16_t)
|
|
{
|
|
// a star emoji
|
|
std::vector<T> const v = {static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"')};
|
|
CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
|
|
CHECK(json::accept(v));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(v, &l));
|
|
CHECK(l.events.size() == 1);
|
|
}
|
|
|
|
TEST_CASE_TEMPLATE("deserialization of different character types (UTF-32)", T,
|
|
char32_t, std::uint32_t)
|
|
{
|
|
// a star emoji
|
|
std::vector<T> const v = {static_cast<T>('"'), static_cast<T>(0x2b50), static_cast<T>(0xfe0f), static_cast<T>('"')};
|
|
CHECK(json::parse(v).dump(-1, ' ', true) == "\"\\u2b50\\ufe0f\"");
|
|
CHECK(json::accept(v));
|
|
|
|
SaxEventLogger l;
|
|
CHECK(json::sax_parse(v, &l));
|
|
CHECK(l.events.size() == 1);
|
|
}
|