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Merge pull request #349 from redboltz/variant

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Variant
This commit is contained in:
Nobuyuki Kubota
2015-09-04 18:42:47 +09:00
parent 3352b2f029 d17c70cbb0
commit 93142323f0
12 changed files with 1489 additions and 0 deletions
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438
include/msgpack/adaptor/boost/msgpack_variant.hpp Normal file
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@@ -0,0 +1,438 @@
//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2015 KONDO Takatoshi
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef MSGPACK_TYPE_BOOST_MSGPACK_VARIANT_HPP
#define MSGPACK_TYPE_BOOST_MSGPACK_VARIANT_HPP
#if defined(MSGPACK_USE_BOOST)
#include "msgpack/versioning.hpp"
#include "msgpack/adaptor/adaptor_base.hpp"
#include "msgpack/adaptor/check_container_size.hpp"
#include "msgpack/adaptor/boost/string_ref.hpp"
#include "msgpack/adaptor/nil.hpp"
#include "msgpack/adaptor/bool.hpp"
#include "msgpack/adaptor/int.hpp"
#include "msgpack/adaptor/float.hpp"
#include "msgpack/adaptor/string.hpp"
#include "msgpack/adaptor/vector_char.hpp"
#include "msgpack/adaptor/raw.hpp"
#include "msgpack/adaptor/ext.hpp"
#include "msgpack/adaptor/vector.hpp"
#include "msgpack/adaptor/map.hpp"
#include <boost/variant.hpp>
#include <boost/operators.hpp>
namespace msgpack {
/// @cond
MSGPACK_API_VERSION_NAMESPACE(v1) {
/// @endcond
namespace type {
template <typename STR, typename BIN, typename EXT>
struct basic_variant :
boost::variant<
nil, // NIL
bool, // BOOL
int64_t, // NEGATIVE_INTEGER
uint64_t, // POSITIVE_INTEGER
double, // FLOAT
std::string, // STR
#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
boost::string_ref, // STR
#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
std::vector<char>, // BIN
msgpack::type::raw_ref, // BIN
ext, // EXT
ext_ref, // EXT
boost::recursive_wrapper<std::vector<basic_variant<STR, BIN, EXT> > >, // ARRAY
boost::recursive_wrapper<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >, // MAP
boost::recursive_wrapper<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >// MAP
>,
private boost::totally_ordered<basic_variant<STR, BIN, EXT> > {
typedef boost::variant<
nil, // NIL
bool, // BOOL
int64_t, // NEGATIVE_INTEGER
uint64_t, // POSITIVE_INTEGER
double, // FLOAT
std::string, // STR
#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
boost::string_ref, // STR
#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
std::vector<char>, // BIN
msgpack::type::raw_ref, // BIN
ext, // EXT
ext_ref, // EXT
boost::recursive_wrapper<std::vector<basic_variant<STR, BIN, EXT> > >, // ARRAY
boost::recursive_wrapper<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >, // MAP
boost::recursive_wrapper<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >// MAP
> base;
basic_variant() {}
template <typename T>
basic_variant(T const& t):base(t) {}
basic_variant(char const* p):base(std::string(p)) {}
basic_variant(char v) {
int_init(v);
}
basic_variant(signed char v) {
int_init(v);
}
basic_variant(unsigned char v):base(uint64_t(v)) {}
basic_variant(signed int v) {
int_init(v);
}
basic_variant(unsigned int v):base(uint64_t(v)) {}
basic_variant(signed long v) {
int_init(v);
}
basic_variant(unsigned long v):base(uint64_t(v)) {}
basic_variant(signed long long v) {
int_init(v);
}
basic_variant(unsigned long long v):base(uint64_t(v)) {}
bool is_nil() const {
return boost::get<nil>(this);
}
bool is_bool() const {
return boost::get<bool>(this);
}
bool is_int64_t() const {
return boost::get<int64_t>(this);
}
bool is_uint64_t() const {
return boost::get<uint64_t>(this);
}
bool is_double() const {
return boost::get<double>(this);
}
bool is_string() const {
return boost::get<std::string>(this);
}
#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
bool is_boost_string_ref() const {
return boost::get<boost::string_ref>(this);
}
#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
bool is_vector_char() const {
return boost::get<std::vector<char> >(this);
}
bool is_vector_char() {
return boost::get<std::vector<char> >(this);
}
bool is_raw_ref() const {
return boost::get<raw_ref>(this);
}
bool is_ext() const {
return boost::get<ext>(this);
}
bool is_ext_ref() const {
return boost::get<ext_ref>(this);
}
bool is_vector() const {
return boost::get<std::vector<basic_variant<STR, BIN, EXT> > >(this);
}
bool is_map() const {
return boost::get<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(this);
}
bool is_multimap() const {
return boost::get<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(this);
}
bool as_bool() const {
return boost::get<bool>(*this);
}
int64_t as_int64_t() const {
return boost::get<int64_t>(*this);
}
int64_t& as_int64_t() {
return boost::get<int64_t>(*this);
}
uint64_t as_uint64_t() const {
return boost::get<uint64_t>(*this);
}
uint64_t& as_uint64_t() {
return boost::get<uint64_t>(*this);
}
double as_double() const {
return boost::get<double>(*this);
}
double& as_double() {
return boost::get<double>(*this);
}
std::string const& as_string() const {
return boost::get<std::string>(*this);
}
std::string& as_string() {
return boost::get<std::string>(*this);
}
#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
boost::string_ref const& as_boost_string_ref() const {
return boost::get<boost::string_ref>(*this);
}
boost::string_ref& as_boost_string_ref() {
return boost::get<boost::string_ref>(*this);
}
#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
std::vector<char> const& as_vector_char() const {
return boost::get<std::vector<char> >(*this);
}
std::vector<char>& as_vector_char() {
return boost::get<std::vector<char> >(*this);
}
raw_ref const& as_raw_ref() const {
return boost::get<raw_ref>(*this);
}
ext const& as_ext() const {
return boost::get<ext>(*this);
}
ext& as_ext() {
return boost::get<ext>(*this);
}
ext_ref const& as_ext_ref() const {
return boost::get<ext_ref>(*this);
}
std::vector<basic_variant<STR, BIN, EXT> > const& as_vector() const {
return boost::get<std::vector<basic_variant<STR, BIN, EXT> > >(*this);
}
std::vector<basic_variant<STR, BIN, EXT> >& as_vector() {
return boost::get<std::vector<basic_variant<STR, BIN, EXT> > >(*this);
}
std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > const& as_map() const {
return boost::get<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
}
std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> >& as_map() {
return boost::get<std::map<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
}
std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > const& as_multimap() const {
return boost::get<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
}
std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> >& as_multimap() {
return boost::get<std::multimap<basic_variant<STR, BIN, EXT>, basic_variant<STR, BIN, EXT> > >(*this);
}
private:
template <typename T>
void int_init(T v) {
if (v < 0) {
static_cast<base&>(*this) = int64_t(v);
}
else {
static_cast<base&>(*this) = uint64_t(v);
}
}
};
template <typename STR, typename BIN, typename EXT>
inline bool operator<(basic_variant<STR, BIN, EXT> const& lhs, basic_variant<STR, BIN, EXT> const& rhs) {
return
static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(lhs) <
static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(rhs);
}
template <typename STR, typename BIN, typename EXT>
inline bool operator==(basic_variant<STR, BIN, EXT> const& lhs, basic_variant<STR, BIN, EXT> const& rhs) {
return
static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(lhs) ==
static_cast<typename basic_variant<STR, BIN, EXT>::base const&>(rhs);
}
typedef basic_variant<std::string, std::vector<char>, ext> variant;
typedef basic_variant<
#if (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
boost::string_ref,
#else // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
std::string,
#endif // (BOOST_VERSION / 100000) >= 1 && ((BOOST_VERSION / 100) % 1000) >= 53
raw_ref, ext_ref> variant_ref;
} // namespace type
namespace adaptor {
#if !defined (MSGPACK_USE_CPP03)
template <typename STR, typename BIN, typename EXT>
struct as<msgpack::type::basic_variant<STR, BIN, EXT> > {
msgpack::type::basic_variant<STR, BIN, EXT> operator()(msgpack::object const& o) const {
switch(o.type) {
case type::NIL:
return o.as<msgpack::type::nil>();
case type::BOOLEAN:
return o.as<bool>();
case type::POSITIVE_INTEGER:
return o.as<uint64_t>();
case type::NEGATIVE_INTEGER:
return o.as<int64_t>();
case type::FLOAT:
return o.as<double>();
case type::STR:
return o.as<STR>();
case type::BIN:
return o.as<BIN>();
case type::EXT:
return o.as<EXT>();
case type::ARRAY:
return o.as<std::vector<msgpack::type::basic_variant<STR, BIN, EXT> > >();
case type::MAP:
return o.as<std::multimap<msgpack::type::basic_variant<STR, BIN, EXT>, msgpack::type::basic_variant<STR, BIN, EXT> > >();
default:
break;
}
return msgpack::type::basic_variant<STR, BIN, EXT>();
}
};
#endif // !defined (MSGPACK_USE_CPP03)
template <typename STR, typename BIN, typename EXT>
struct convert<msgpack::type::basic_variant<STR, BIN, EXT> > {
msgpack::object const& operator()(
msgpack::object const& o,
msgpack::type::basic_variant<STR, BIN, EXT>& v) const {
switch(o.type) {
case type::NIL:
v = o.as<msgpack::type::nil>();
break;
case type::BOOLEAN:
v = o.as<bool>();
break;
case type::POSITIVE_INTEGER:
v = o.as<uint64_t>();
break;
case type::NEGATIVE_INTEGER:
v = o.as<int64_t>();
break;
case type::FLOAT:
v = o.as<double>();
break;
case type::STR:
v = o.as<STR>();
break;
case type::BIN:
v = o.as<BIN>();
break;
case type::EXT:
v = o.as<EXT>();
break;
case type::ARRAY:
v = o.as<std::vector<msgpack::type::basic_variant<STR, BIN, EXT> > >();
break;
case type::MAP:
v = o.as<std::multimap<msgpack::type::basic_variant<STR, BIN, EXT>, msgpack::type::basic_variant<STR, BIN, EXT> > >();
break;
default:
break;
}
return o;
}
};
namespace detail {
template <typename Stream>
struct pack_imp : boost::static_visitor<void> {
template <typename T>
void operator()(T const& value) const {
pack<T>()(o_, value);
}
pack_imp(packer<Stream>& o):o_(o) {}
packer<Stream>& o_;
};
} // namespace detail
template <typename STR, typename BIN, typename EXT>
struct pack<msgpack::type::basic_variant<STR, BIN, EXT> > {
template <typename Stream>
msgpack::packer<Stream>& operator()(msgpack::packer<Stream>& o, const msgpack::type::basic_variant<STR, BIN, EXT>& v) const {
boost::apply_visitor(detail::pack_imp<Stream>(o), v);
return o;
}
};
namespace detail {
struct object_imp : boost::static_visitor<void> {
void operator()(msgpack::type::nil const& v) const {
object<msgpack::type::nil>()(o_, v);
}
void operator()(bool const& v) const {
object<bool>()(o_, v);
}
void operator()(uint64_t const& v) const {
object<uint64_t>()(o_, v);
}
void operator()(int64_t const& v) const {
object<int64_t>()(o_, v);
}
void operator()(double const& v) const {
object<double>()(o_, v);
}
template <typename T>
void operator()(T const&) const {
throw msgpack::type_error();
}
object_imp(msgpack::object& o):o_(o) {}
msgpack::object& o_;
};
} // namespace detail
template <typename STR, typename BIN, typename EXT>
struct object<msgpack::type::basic_variant<STR, BIN, EXT> > {
void operator()(msgpack::object& o, const msgpack::type::basic_variant<STR, BIN, EXT>& v) const {
boost::apply_visitor(detail::object_imp(o), v);
}
};
namespace detail {
struct object_with_zone_imp : boost::static_visitor<void> {
template <typename T>
void operator()(T const& v) const {
object_with_zone<T>()(o_, v);
}
object_with_zone_imp(msgpack::object::with_zone& o):o_(o) {}
msgpack::object::with_zone& o_;
};
} // namespace detail
template <typename STR, typename BIN, typename EXT>
struct object_with_zone<msgpack::type::basic_variant<STR, BIN, EXT> > {
void operator()(msgpack::object::with_zone& o, const msgpack::type::basic_variant<STR, BIN, EXT>& v) const {
boost::apply_visitor(detail::object_with_zone_imp(o), v);
}
};
} // namespace adaptor
/// @cond
} // MSGPACK_API_VERSION_NAMESPACE(v1)
/// @endcond
} // namespace msgpack
#endif // MSGPACK_USE_BOOST
#endif // MSGPACK_TYPE_BOOST_MSGPACK_VARIANT_HPP

8
include/msgpack/adaptor/nil.hpp
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@@ -31,6 +31,14 @@ namespace type {
struct nil { };
inline bool operator<(nil const& lhs, nil const& rhs) {
return &lhs < &rhs;
}
inline bool operator==(nil const& lhs, nil const& rhs) {
return &lhs == &rhs;
}
} // namespace type
namespace adaptor {

1
include/msgpack/type.hpp
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@@ -44,6 +44,7 @@
#if defined(MSGPACK_USE_BOOST)
#include "adaptor/boost/fusion.hpp"
#include "adaptor/boost/msgpack_variant.hpp"
#include "adaptor/boost/optional.hpp"
#include "adaptor/boost/string_ref.hpp"