variant.hpp File Reference

Detailed Description

Ineffective but generic parser for std::variant type.

Parsing is performed for each of the N alternatives in variant, N-1 exceptions is thrown and caught during the parsing.

Definition in file variant.hpp.

Go to the source code of this file.

#include <optional>
#include <typeinfo>
#include <variant>
#include <fmt/format.h>
#include <userver/compiler/demangle.hpp>
#include <userver/formats/parse/to.hpp>

This graph shows which files directly or indirectly include this file:

Namespaces
namespace	formats
	Value formats representation, parsing and serialization.
namespace	formats::json
	JSON support.
namespace	formats::parse
	Generic parsers and converters.

Functions
template<typename ParseException, typename Variant, typename TypeA>
void	formats::parse::ThrowVariantAmbiguousParse (std::string_view path, std::type_index type_b)
template<class ParseException, typename Variant>
void	formats::parse::ThrowVariantParseException (std::string_view path)
template<class Value, typename... Types>
std::variant< decltype(Parse(std::declval< Value >(), To< Types >{}))... >	formats::parse::Parse (const Value &value, formats::parse::To< std::variant< Types... > >)