258 lines
9.0 KiB
C++
258 lines
9.0 KiB
C++
|
// __ _____ _____ _____
|
||
|
|
// __| | __| | | | JSON for Modern C++
|
||
|
|
// | | |__ | | | | | | version 3.11.3
|
||
|
|
// |_____|_____|_____|_|___| https://github.com/nlohmann/json
|
||
|
|
//
|
||
|
|
// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
|
||
|
|
// SPDX-License-Identifier: MIT
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <cstddef> // nullptr_t
|
||
|
|
#include <exception> // exception
|
||
|
|
#if JSON_DIAGNOSTICS
|
||
|
|
#include <numeric> // accumulate
|
||
|
|
#endif
|
||
|
|
#include <stdexcept> // runtime_error
|
||
|
|
#include <string> // to_string
|
||
|
|
#include <vector> // vector
|
||
|
|
|
||
|
|
#include <nlohmann/detail/value_t.hpp>
|
||
|
|
#include <nlohmann/detail/string_escape.hpp>
|
||
|
|
#include <nlohmann/detail/input/position_t.hpp>
|
||
|
|
#include <nlohmann/detail/macro_scope.hpp>
|
||
|
|
#include <nlohmann/detail/meta/cpp_future.hpp>
|
||
|
|
#include <nlohmann/detail/meta/type_traits.hpp>
|
||
|
|
#include <nlohmann/detail/string_concat.hpp>
|
||
|
|
|
||
|
|
NLOHMANN_JSON_NAMESPACE_BEGIN
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
|
||
|
|
////////////////
|
||
|
|
// exceptions //
|
||
|
|
////////////////
|
||
|
|
|
||
|
|
/// @brief general exception of the @ref basic_json class
|
||
|
|
/// @sa https://json.nlohmann.me/api/basic_json/exception/
|
||
|
|
class exception : public std::exception
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
/// returns the explanatory string
|
||
|
|
const char* what() const noexcept override
|
||
|
|
{
|
||
|
|
return m.what();
|
||
|
|
}
|
||
|
|
|
||
|
|
/// the id of the exception
|
||
|
|
const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
|
||
|
|
|
||
|
|
protected:
|
||
|
|
JSON_HEDLEY_NON_NULL(3)
|
||
|
|
exception(int id_, const char* what_arg) : id(id_), m(what_arg) {} // NOLINT(bugprone-throw-keyword-missing)
|
||
|
|
|
||
|
|
static std::string name(const std::string& ename, int id_)
|
||
|
|
{
|
||
|
|
return concat("[json.exception.", ename, '.', std::to_string(id_), "] ");
|
||
|
|
}
|
||
|
|
|
||
|
|
static std::string diagnostics(std::nullptr_t /*leaf_element*/)
|
||
|
|
{
|
||
|
|
return "";
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename BasicJsonType>
|
||
|
|
static std::string diagnostics(const BasicJsonType* leaf_element)
|
||
|
|
{
|
||
|
|
#if JSON_DIAGNOSTICS
|
||
|
|
std::vector<std::string> tokens;
|
||
|
|
for (const auto* current = leaf_element; current != nullptr && current->m_parent != nullptr; current = current->m_parent)
|
||
|
|
{
|
||
|
|
switch (current->m_parent->type())
|
||
|
|
{
|
||
|
|
case value_t::array:
|
||
|
|
{
|
||
|
|
for (std::size_t i = 0; i < current->m_parent->m_data.m_value.array->size(); ++i)
|
||
|
|
{
|
||
|
|
if (¤t->m_parent->m_data.m_value.array->operator[](i) == current)
|
||
|
|
{
|
||
|
|
tokens.emplace_back(std::to_string(i));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case value_t::object:
|
||
|
|
{
|
||
|
|
for (const auto& element : *current->m_parent->m_data.m_value.object)
|
||
|
|
{
|
||
|
|
if (&element.second == current)
|
||
|
|
{
|
||
|
|
tokens.emplace_back(element.first.c_str());
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case value_t::null: // LCOV_EXCL_LINE
|
||
|
|
case value_t::string: // LCOV_EXCL_LINE
|
||
|
|
case value_t::boolean: // LCOV_EXCL_LINE
|
||
|
|
case value_t::number_integer: // LCOV_EXCL_LINE
|
||
|
|
case value_t::number_unsigned: // LCOV_EXCL_LINE
|
||
|
|
case value_t::number_float: // LCOV_EXCL_LINE
|
||
|
|
case value_t::binary: // LCOV_EXCL_LINE
|
||
|
|
case value_t::discarded: // LCOV_EXCL_LINE
|
||
|
|
default: // LCOV_EXCL_LINE
|
||
|
|
break; // LCOV_EXCL_LINE
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (tokens.empty())
|
||
|
|
{
|
||
|
|
return "";
|
||
|
|
}
|
||
|
|
|
||
|
|
auto str = std::accumulate(tokens.rbegin(), tokens.rend(), std::string{},
|
||
|
|
[](const std::string & a, const std::string & b)
|
||
|
|
{
|
||
|
|
return concat(a, '/', detail::escape(b));
|
||
|
|
});
|
||
|
|
return concat('(', str, ") ");
|
||
|
|
#else
|
||
|
|
static_cast<void>(leaf_element);
|
||
|
|
return "";
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
/// an exception object as storage for error messages
|
||
|
|
std::runtime_error m;
|
||
|
|
};
|
||
|
|
|
||
|
|
/// @brief exception indicating a parse error
|
||
|
|
/// @sa https://json.nlohmann.me/api/basic_json/parse_error/
|
||
|
|
class parse_error : public exception
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
/*!
|
||
|
|
@brief create a parse error exception
|
||
|
|
@param[in] id_ the id of the exception
|
||
|
|
@param[in] pos the position where the error occurred (or with
|
||
|
|
chars_read_total=0 if the position cannot be
|
||
|
|
determined)
|
||
|
|
@param[in] what_arg the explanatory string
|
||
|
|
@return parse_error object
|
||
|
|
*/
|
||
|
|
template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
|
||
|
|
static parse_error create(int id_, const position_t& pos, const std::string& what_arg, BasicJsonContext context)
|
||
|
|
{
|
||
|
|
const std::string w = concat(exception::name("parse_error", id_), "parse error",
|
||
|
|
position_string(pos), ": ", exception::diagnostics(context), what_arg);
|
||
|
|
return {id_, pos.chars_read_total, w.c_str()};
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
|
||
|
|
static parse_error create(int id_, std::size_t byte_, const std::string& what_arg, BasicJsonContext context)
|
||
|
|
{
|
||
|
|
const std::string w = concat(exception::name("parse_error", id_), "parse error",
|
||
|
|
(byte_ != 0 ? (concat(" at byte ", std::to_string(byte_))) : ""),
|
||
|
|
": ", exception::diagnostics(context), what_arg);
|
||
|
|
return {id_, byte_, w.c_str()};
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
@brief byte index of the parse error
|
||
|
|
|
||
|
|
The byte index of the last read character in the input file.
|
||
|
|
|
||
|
|
@note For an input with n bytes, 1 is the index of the first character and
|
||
|
|
n+1 is the index of the terminating null byte or the end of file.
|
||
|
|
This also holds true when reading a byte vector (CBOR or MessagePack).
|
||
|
|
*/
|
||
|
|
const std::size_t byte;
|
||
|
|
|
||
|
|
private:
|
||
|
|
parse_error(int id_, std::size_t byte_, const char* what_arg)
|
||
|
|
: exception(id_, what_arg), byte(byte_) {}
|
||
|
|
|
||
|
|
static std::string position_string(const position_t& pos)
|
||
|
|
{
|
||
|
|
return concat(" at line ", std::to_string(pos.lines_read + 1),
|
||
|
|
", column ", std::to_string(pos.chars_read_current_line));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/// @brief exception indicating errors with iterators
|
||
|
|
/// @sa https://json.nlohmann.me/api/basic_json/invalid_iterator/
|
||
|
|
class invalid_iterator : public exception
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
|
||
|
|
static invalid_iterator create(int id_, const std::string& what_arg, BasicJsonContext context)
|
||
|
|
{
|
||
|
|
const std::string w = concat(exception::name("invalid_iterator", id_), exception::diagnostics(context), what_arg);
|
||
|
|
return {id_, w.c_str()};
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
JSON_HEDLEY_NON_NULL(3)
|
||
|
|
invalid_iterator(int id_, const char* what_arg)
|
||
|
|
: exception(id_, what_arg) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
/// @brief exception indicating executing a member function with a wrong type
|
||
|
|
/// @sa https://json.nlohmann.me/api/basic_json/type_error/
|
||
|
|
class type_error : public exception
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
|
||
|
|
static type_error create(int id_, const std::string& what_arg, BasicJsonContext context)
|
||
|
|
{
|
||
|
|
const std::string w = concat(exception::name("type_error", id_), exception::diagnostics(context), what_arg);
|
||
|
|
return {id_, w.c_str()};
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
JSON_HEDLEY_NON_NULL(3)
|
||
|
|
type_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
/// @brief exception indicating access out of the defined range
|
||
|
|
/// @sa https://json.nlohmann.me/api/basic_json/out_of_range/
|
||
|
|
class out_of_range : public exception
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
|
||
|
|
static out_of_range create(int id_, const std::string& what_arg, BasicJsonContext context)
|
||
|
|
{
|
||
|
|
const std::string w = concat(exception::name("out_of_range", id_), exception::diagnostics(context), what_arg);
|
||
|
|
return {id_, w.c_str()};
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
JSON_HEDLEY_NON_NULL(3)
|
||
|
|
out_of_range(int id_, const char* what_arg) : exception(id_, what_arg) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
/// @brief exception indicating other library errors
|
||
|
|
/// @sa https://json.nlohmann.me/api/basic_json/other_error/
|
||
|
|
class other_error : public exception
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
template<typename BasicJsonContext, enable_if_t<is_basic_json_context<BasicJsonContext>::value, int> = 0>
|
||
|
|
static other_error create(int id_, const std::string& what_arg, BasicJsonContext context)
|
||
|
|
{
|
||
|
|
const std::string w = concat(exception::name("other_error", id_), exception::diagnostics(context), what_arg);
|
||
|
|
return {id_, w.c_str()};
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
JSON_HEDLEY_NON_NULL(3)
|
||
|
|
other_error(int id_, const char* what_arg) : exception(id_, what_arg) {}
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
NLOHMANN_JSON_NAMESPACE_END
|