mirror of
https://github.com/msgpack/msgpack-c.git
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452 lines
15 KiB
C++
452 lines
15 KiB
C++
//
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// MessagePack for C++ static resolution routine
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//
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// Copyright (C) 2015-2016 KONDO Takatoshi
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef MSGPACK_V1_TYPE_BOOST_MSGPACK_VARIANT_HPP
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#define MSGPACK_V1_TYPE_BOOST_MSGPACK_VARIANT_HPP
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#include "msgpack/v1/adaptor/boost/msgpack_variant_decl.hpp"
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#include "msgpack/adaptor/check_container_size.hpp"
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#include "msgpack/adaptor/boost/string_ref.hpp"
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#include "msgpack/adaptor/nil.hpp"
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#include "msgpack/adaptor/bool.hpp"
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#include "msgpack/adaptor/int.hpp"
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#include "msgpack/adaptor/float.hpp"
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#include "msgpack/adaptor/string.hpp"
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#include "msgpack/adaptor/vector_char.hpp"
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#include "msgpack/adaptor/raw.hpp"
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#include "msgpack/adaptor/ext.hpp"
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#include "msgpack/adaptor/vector.hpp"
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#include "msgpack/adaptor/map.hpp"
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#if defined(__GNUC__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wconversion"
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#endif // defined(__GNUC__)
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#include <boost/variant.hpp>
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#if defined(__GNUC__)
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#pragma GCC diagnostic pop
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#endif // defined(__GNUC__)
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#include <boost/operators.hpp>
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namespace msgpack {
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/// @cond
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MSGPACK_API_VERSION_NAMESPACE(v1) {
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/// @endcond
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namespace type {
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template <typename STR, typename BIN, typename EXT>
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struct basic_variant :
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boost::variant<
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nil_t, // NIL
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bool, // BOOL
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int64_t, // NEGATIVE_INTEGER
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uint64_t, // POSITIVE_INTEGER
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double, // FLOAT32, FLOAT64
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std::string, // STR
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#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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boost::string_ref, // STR
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#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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std::vector<char>, // BIN
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msgpack::type::raw_ref, // BIN
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msgpack::type::ext, // EXT
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msgpack::type::ext_ref, // EXT
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boost::recursive_wrapper<std::vector<basic_variant<STR, BIN, EXT> > >, // ARRAY
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boost::recursive_wrapper<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >, // MAP
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boost::recursive_wrapper<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >// MAP
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>,
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private boost::totally_ordered<basic_variant<STR, BIN, EXT> > {
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typedef boost::variant<
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nil_t, // NIL
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bool, // BOOL
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int64_t, // NEGATIVE_INTEGER
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uint64_t, // POSITIVE_INTEGER
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double, // FLOAT32, FLOAT64
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std::string, // STR
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#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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boost::string_ref, // STR
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#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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std::vector<char>, // BIN
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msgpack::type::raw_ref, // BIN
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msgpack::type::ext, // EXT
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msgpack::type::ext_ref, // EXT
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boost::recursive_wrapper<std::vector<basic_variant<STR, BIN, EXT> > >, // ARRAY
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boost::recursive_wrapper<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >, // MAP
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boost::recursive_wrapper<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >// MAP
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> base;
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basic_variant() {}
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template <typename T>
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basic_variant(T const& t):base(t) {}
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#if defined(_MSC_VER) && _MSC_VER < 1700
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// The following redundant functions are required to avoid MSVC
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// See https://svn.boost.org/trac/boost/ticket/592
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basic_variant(basic_variant const& other):base(static_cast<base const&>(other)) {}
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basic_variant& operator=(basic_variant const& other) {
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*static_cast<base*>(this) = static_cast<base const&>(other);
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return *this;
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}
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#endif // defined(_MSC_VER) && _MSC_VER < 1700
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basic_variant(char const* p):base(std::string(p)) {}
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basic_variant(char v) {
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int_init(v);
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}
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basic_variant(signed char v) {
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int_init(v);
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}
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basic_variant(unsigned char v):base(uint64_t(v)) {}
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basic_variant(signed int v) {
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int_init(v);
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}
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basic_variant(unsigned int v):base(uint64_t(v)) {}
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basic_variant(signed long v) {
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int_init(v);
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}
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basic_variant(unsigned long v):base(uint64_t(v)) {}
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basic_variant(signed long long v) {
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int_init(v);
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}
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basic_variant(unsigned long long v):base(uint64_t(v)) {}
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bool is_nil() const {
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return boost::get<msgpack::type::nil_t>(this) != MSGPACK_NULLPTR;
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}
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bool is_bool() const {
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return boost::get<bool>(this) != MSGPACK_NULLPTR;
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}
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bool is_int64_t() const {
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return boost::get<int64_t>(this) != MSGPACK_NULLPTR;
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}
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bool is_uint64_t() const {
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return boost::get<uint64_t>(this) != MSGPACK_NULLPTR;
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}
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bool is_double() const {
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return boost::get<double>(this) != MSGPACK_NULLPTR;
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}
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bool is_string() const {
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return boost::get<std::string>(this) != MSGPACK_NULLPTR;
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}
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#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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bool is_boost_string_ref() const {
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return boost::get<boost::string_ref>(this) != MSGPACK_NULLPTR;
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}
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#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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bool is_vector_char() const {
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return boost::get<std::vector<char> >(this) != MSGPACK_NULLPTR;
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}
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bool is_vector_char() {
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return boost::get<std::vector<char> >(this) != MSGPACK_NULLPTR;
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}
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bool is_raw_ref() const {
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return boost::get<raw_ref>(this) != MSGPACK_NULLPTR;
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}
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bool is_ext() const {
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return boost::get<ext>(this) != MSGPACK_NULLPTR;
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}
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bool is_ext_ref() const {
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return boost::get<ext_ref>(this) != MSGPACK_NULLPTR;
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}
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bool is_vector() const {
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return boost::get<std::vector<basic_variant<STR, BIN, EXT> > >(this) != MSGPACK_NULLPTR;
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}
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bool is_map() const {
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return boost::get<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(this) != MSGPACK_NULLPTR;
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}
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bool is_multimap() const {
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return boost::get<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(this) != MSGPACK_NULLPTR;
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}
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bool as_bool() const {
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return boost::get<bool>(*this);
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}
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int64_t as_int64_t() const {
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return boost::get<int64_t>(*this);
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}
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int64_t& as_int64_t() {
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return boost::get<int64_t>(*this);
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}
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uint64_t as_uint64_t() const {
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return boost::get<uint64_t>(*this);
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}
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uint64_t& as_uint64_t() {
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return boost::get<uint64_t>(*this);
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}
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double as_double() const {
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return boost::get<double>(*this);
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}
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double& as_double() {
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return boost::get<double>(*this);
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}
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std::string const& as_string() const {
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return boost::get<std::string>(*this);
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}
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std::string& as_string() {
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return boost::get<std::string>(*this);
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}
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#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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boost::string_ref const& as_boost_string_ref() const {
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return boost::get<boost::string_ref>(*this);
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}
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boost::string_ref& as_boost_string_ref() {
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return boost::get<boost::string_ref>(*this);
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}
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#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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std::vector<char> const& as_vector_char() const {
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return boost::get<std::vector<char> >(*this);
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}
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std::vector<char>& as_vector_char() {
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return boost::get<std::vector<char> >(*this);
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}
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raw_ref const& as_raw_ref() const {
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return boost::get<raw_ref>(*this);
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}
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ext const& as_ext() const {
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return boost::get<ext>(*this);
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}
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ext& as_ext() {
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return boost::get<ext>(*this);
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}
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ext_ref const& as_ext_ref() const {
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return boost::get<ext_ref>(*this);
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}
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std::vector<basic_variant<STR, BIN, EXT> > const& as_vector() const {
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return boost::get<std::vector<basic_variant<STR, BIN, EXT> > >(*this);
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}
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std::vector<basic_variant<STR, BIN, EXT> >& as_vector() {
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return boost::get<std::vector<basic_variant<STR, BIN, EXT> > >(*this);
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}
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std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > const& as_map() const {
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return boost::get<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
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}
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std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> >& as_map() {
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return boost::get<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
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}
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std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > const& as_multimap() const {
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return boost::get<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
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}
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std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> >& as_multimap() {
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return boost::get<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
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}
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private:
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template <typename T>
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void int_init(T v) {
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if (v < 0) {
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static_cast<base&>(*this) = int64_t(v);
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}
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else {
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static_cast<base&>(*this) = uint64_t(v);
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}
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}
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};
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template <typename STR, typename BIN, typename EXT>
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inline bool operator<(basic_variant<STR, BIN, EXT> const& lhs, basic_variant<STR, BIN, EXT> const& rhs) {
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return
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static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(lhs) <
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static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(rhs);
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}
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template <typename STR, typename BIN, typename EXT>
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inline bool operator==(basic_variant<STR, BIN, EXT> const& lhs, basic_variant<STR, BIN, EXT> const& rhs) {
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return
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static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(lhs) ==
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static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(rhs);
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}
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typedef basic_variant<std::string, std::vector<char>, ext> variant;
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typedef basic_variant<
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#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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boost::string_ref,
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#else // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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std::string,
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#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
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raw_ref, ext_ref> variant_ref;
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} // namespace type
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namespace adaptor {
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#if !defined (MSGPACK_USE_CPP03)
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template <typename STR, typename BIN, typename EXT>
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struct as<type::basic_variant<STR, BIN, EXT> > {
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type::basic_variant<STR, BIN, EXT> operator()(msgpack::object const& o) const {
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switch(o.type) {
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case type::NIL:
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return o.as<msgpack::type::nil_t>();
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case type::BOOLEAN:
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return o.as<bool>();
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case type::POSITIVE_INTEGER:
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return o.as<uint64_t>();
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case type::NEGATIVE_INTEGER:
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return o.as<int64_t>();
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case type::FLOAT32:
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case type::FLOAT64:
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return o.as<double>();
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case type::STR:
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return o.as<STR>();
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case type::BIN:
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return o.as<BIN>();
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case type::EXT:
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return o.as<EXT>();
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case type::ARRAY:
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return o.as<std::vector<type::basic_variant<STR, BIN, EXT> > >();
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case type::MAP:
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return o.as<std::multimap<type::basic_variant<STR, BIN, EXT>, type::basic_variant<STR, BIN, EXT> > >();
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default:
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break;
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}
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return type::basic_variant<STR, BIN, EXT>();
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}
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};
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#endif // !defined (MSGPACK_USE_CPP03)
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template <typename STR, typename BIN, typename EXT>
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struct convert<type::basic_variant<STR, BIN, EXT> > {
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msgpack::object const& operator()(
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msgpack::object const& o,
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type::basic_variant<STR, BIN, EXT>& v) const {
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switch(o.type) {
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case type::NIL:
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v = o.as<msgpack::type::nil_t>();
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break;
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case type::BOOLEAN:
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v = o.as<bool>();
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break;
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case type::POSITIVE_INTEGER:
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v = o.as<uint64_t>();
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break;
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case type::NEGATIVE_INTEGER:
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v = o.as<int64_t>();
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break;
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case type::FLOAT32:
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case type::FLOAT64:
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v = o.as<double>();
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break;
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case type::STR:
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v = o.as<STR>();
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break;
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case type::BIN:
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v = o.as<BIN>();
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break;
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case type::EXT:
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v = o.as<EXT>();
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break;
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case type::ARRAY:
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v = o.as<std::vector<type::basic_variant<STR, BIN, EXT> > >();
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break;
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case type::MAP:
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v = o.as<std::multimap<type::basic_variant<STR, BIN, EXT>, type::basic_variant<STR, BIN, EXT> > >();
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break;
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default:
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break;
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}
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return o;
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}
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};
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namespace detail {
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template <typename Stream>
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struct pack_imp : boost::static_visitor<void> {
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template <typename T>
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void operator()(T const& value) const {
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pack<T>()(o_, value);
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}
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pack_imp(packer<Stream>& o):o_(o) {}
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packer<Stream>& o_;
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};
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} // namespace detail
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template <typename STR, typename BIN, typename EXT>
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struct pack<type::basic_variant<STR, BIN, EXT> > {
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template <typename Stream>
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msgpack::packer<Stream>& operator()(msgpack::packer<Stream>& o, const type::basic_variant<STR, BIN, EXT>& v) const {
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boost::apply_visitor(detail::pack_imp<Stream>(o), v);
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return o;
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}
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};
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namespace detail {
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struct object_imp : boost::static_visitor<void> {
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void operator()(msgpack::type::nil_t const& v) const {
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object<msgpack::type::nil_t>()(o_, v);
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}
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void operator()(bool const& v) const {
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object<bool>()(o_, v);
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}
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void operator()(uint64_t const& v) const {
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object<uint64_t>()(o_, v);
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}
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void operator()(int64_t const& v) const {
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object<int64_t>()(o_, v);
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}
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void operator()(double const& v) const {
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object<double>()(o_, v);
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}
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template <typename T>
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void operator()(T const&) const {
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throw msgpack::type_error();
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}
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object_imp(msgpack::object& o):o_(o) {}
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msgpack::object& o_;
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};
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} // namespace detail
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template <typename STR, typename BIN, typename EXT>
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struct object<type::basic_variant<STR, BIN, EXT> > {
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void operator()(msgpack::object& o, const type::basic_variant<STR, BIN, EXT>& v) const {
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boost::apply_visitor(detail::object_imp(o), v);
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}
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};
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namespace detail {
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struct object_with_zone_imp : boost::static_visitor<void> {
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template <typename T>
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void operator()(T const& v) const {
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object_with_zone<T>()(o_, v);
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}
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object_with_zone_imp(msgpack::object::with_zone& o):o_(o) {}
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msgpack::object::with_zone& o_;
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};
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} // namespace detail
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template <typename STR, typename BIN, typename EXT>
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struct object_with_zone<type::basic_variant<STR, BIN, EXT> > {
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void operator()(msgpack::object::with_zone& o, const type::basic_variant<STR, BIN, EXT>& v) const {
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boost::apply_visitor(detail::object_with_zone_imp(o), v);
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}
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};
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} // namespace adaptor
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/// @cond
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} // MSGPACK_API_VERSION_NAMESPACE(v1)
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/// @endcond
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} // namespace msgpack
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#endif // MSGPACK_V1_TYPE_BOOST_MSGPACK_VARIANT_HPP
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