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/// Copyright 2013-2025 Daniel Parker
// Distributed under the Boost license, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See https://github.com/danielaparker/jsoncons for latest version
#ifndef JSONCONS_EXT_JMESPATH_JMESPATH_ERROR_HPP
#define JSONCONS_EXT_JMESPATH_JMESPATH_ERROR_HPP
#include <cstddef>
#include <string>
#include <system_error>
#include <type_traits>
#include <jsoncons/config/compiler_support.hpp>
#include <jsoncons/json_exception.hpp>
namespace jsoncons { namespace jmespath {
class jmespath_error : public std::system_error, public virtual json_exception
{
std::size_t line_number_{0};
std::size_t column_number_{0};
mutable std::string what_;
public:
jmespath_error(std::error_code ec)
: std::system_error(ec)
{
}
jmespath_error(std::error_code ec, const std::string& what_arg)
: std::system_error(ec, what_arg)
{
}
jmespath_error(std::error_code ec, std::size_t position)
: std::system_error(ec), column_number_(position)
{
}
jmespath_error(std::error_code ec, std::size_t line, std::size_t column)
: std::system_error(ec), line_number_(line), column_number_(column)
{
}
jmespath_error(const jmespath_error& other) = default;
jmespath_error(jmespath_error&& other) = default;
~jmespath_error() override = default;
const char* what() const noexcept override
{
if (what_.empty())
{
JSONCONS_TRY
{
what_.append(std::system_error::what());
if (line_number_ != 0 && column_number_ != 0)
{
what_.append(" at line ");
what_.append(std::to_string(line_number_));
what_.append(" and column ");
what_.append(std::to_string(column_number_));
}
else if (column_number_ != 0)
{
what_.append(" at position ");
what_.append(std::to_string(column_number_));
}
return what_.c_str();
}
JSONCONS_CATCH(...)
{
return std::system_error::what();
}
}
else
{
return what_.c_str();
}
}
std::size_t line() const noexcept
{
return line_number_;
}
std::size_t column() const noexcept
{
return column_number_;
}
};
enum class jmespath_errc
{
success = 0,
expected_identifier,
expected_index,
expected_A_Za_Z_,
expected_rbracket,
expected_rparen,
expected_rbrace,
expected_colon,
expected_dot,
expected_or,
expected_and,
expected_multi_select_list,
invalid_number,
invalid_literal,
expected_comparator,
expected_key,
invalid_argument,
unknown_function,
invalid_type,
unexpected_end_of_input,
step_cannot_be_zero,
syntax_error,
invalid_codepoint,
illegal_escaped_character,
unbalanced_parentheses,
unbalanced_braces,
invalid_arity,
identifier_not_found,
expected_index_expression,
undefined_variable,
unknown_error
};
class jmespath_error_category_impl
: public std::error_category
{
public:
const char* name() const noexcept override
{
return "jsoncons/jmespath";
}
std::string message(int ev) const override
{
switch (static_cast<jmespath_errc>(ev))
{
case jmespath_errc::expected_identifier:
return "Expected identifier";
case jmespath_errc::expected_index:
return "Expected index";
case jmespath_errc::expected_A_Za_Z_:
return "Expected A-Z, a-z, or _";
case jmespath_errc::expected_rbracket:
return "Expected ]";
case jmespath_errc::expected_rparen:
return "Expected )";
case jmespath_errc::expected_rbrace:
return "Expected }";
case jmespath_errc::expected_colon:
return "Expected :";
case jmespath_errc::expected_dot:
return "Expected \".\"";
case jmespath_errc::expected_or:
return "Expected \"||\"";
case jmespath_errc::expected_and:
return "Expected \"&&\"";
case jmespath_errc::expected_multi_select_list:
return "Expected multi-select-list";
case jmespath_errc::invalid_number:
return "Invalid number";
case jmespath_errc::invalid_literal:
return "Invalid literal";
case jmespath_errc::expected_comparator:
return "Expected <, <=, ==, >=, > or !=";
case jmespath_errc::expected_key:
return "Expected key";
case jmespath_errc::invalid_argument:
return "Invalid argument type";
case jmespath_errc::unknown_function:
return "Unknown function";
case jmespath_errc::invalid_type:
return "Invalid type";
case jmespath_errc::unexpected_end_of_input:
return "Unexpected end of jmespath input";
case jmespath_errc::step_cannot_be_zero:
return "Slice step cannot be zero";
case jmespath_errc::syntax_error:
return "Syntax error";
case jmespath_errc::invalid_codepoint:
return "Invalid codepoint";
case jmespath_errc::illegal_escaped_character:
return "Illegal escaped character";
case jmespath_errc::unbalanced_parentheses:
return "Unbalanced parentheses";
case jmespath_errc::unbalanced_braces:
return "Unbalanced braces";
case jmespath_errc::invalid_arity:
return "Function called with wrong number of arguments";
case jmespath_errc::identifier_not_found:
return "Identifier not found";
case jmespath_errc::expected_index_expression:
return "Expected index expression";
case jmespath_errc::undefined_variable:
return "Undefined variable";
case jmespath_errc::unknown_error:
default:
return "Unknown jmespath parser error";
}
}
};
inline
const std::error_category& jmespath_error_category()
{
static jmespath_error_category_impl instance;
return instance;
}
inline
std::error_code make_error_code(jmespath_errc result)
{
return std::error_code(static_cast<int>(result),jmespath_error_category());
}
} // namespace jmespath
} // namespace jsoncons
namespace std {
template<>
struct is_error_code_enum<jsoncons::jmespath::jmespath_errc> : public true_type
{
};
} // namespace std
#endif // JSONCONS_EXT_JMESPATH_JMESPATH_ERROR_HPP
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