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//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2008 FURUHASHI Sadayuki
//
// 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_OBJECT_HPP__
#define MSGPACK_OBJECT_HPP__
#include "msgpack/pack.hpp"
#include <stdint.h>
#include <stdexcept>
#include <typeinfo>
#include <limits>
#include <ostream>
namespace msgpack {
class type_error : public std::bad_cast { };
namespace type {
static const unsigned char NIL = 0x01;
static const unsigned char BOOLEAN = 0x02;
static const unsigned char POSITIVE_INTEGER = 0x03;
static const unsigned char NEGATIVE_INTEGER = 0x04;
static const unsigned char DOUBLE = 0x05;
static const unsigned char RAW = 0x06;
static const unsigned char ARRAY = 0x07;
static const unsigned char MAP = 0x08;
}
struct object {
unsigned char type;
union {
bool boolean;
uint64_t u64;
int64_t i64;
double dec;
struct {
object* ptr;
uint32_t size;
} container;
struct {
const char* ptr;
uint32_t size;
} ref;
} via;
template <typename T>
operator T() { T v; convert(v, *this); return v; };
template <typename T>
T as() { T v; convert(v, *this); return v; }
bool is_nil() { return type == type::NIL; }
};
std::ostream& operator<< (std::ostream& s, const object o);
bool operator==(const object x, const object y);
inline bool operator!=(const object x, const object y) { return !(x == y); }
inline object& operator>> (object o, object& v)
{ v = o; return v; }
template <typename Stream>
packer<Stream>& operator<< (packer<Stream>& o, const object& v);
template <typename T>
inline T& operator>> (object o, T& v)
{
v.msgpack_unpack(o);
return v;
}
template <typename Stream, typename T>
inline packer<Stream>& operator<< (packer<Stream>& o, const T& v)
{
o << v.msgpack_pack();
return o;
}
template <typename T>
inline void convert(T& v, object o)
{
o >> v;
}
template <typename Stream, typename T>
inline void pack(packer<Stream>& o, const T& v)
{
o << v;
}
template <typename Stream, typename T>
inline void pack(Stream& s, const T& v)
{
packer<Stream> pk(s);
pack(pk, v);
}
template <typename Stream, typename T>
inline void pack_copy(packer<Stream>& o, T v)
{
pack(o, v);
}
template <typename Stream>
packer<Stream>& operator<< (packer<Stream>& o, const object& v)
{
switch(v.type) {
case type::NIL:
o.pack_nil();
return o;
case type::BOOLEAN:
if(v.via.boolean) {
o.pack_true();
} else {
o.pack_false();
}
return o;
case type::POSITIVE_INTEGER:
if(v.via.u64 <= (uint64_t)std::numeric_limits<uint16_t>::max()) {
if(v.via.u64 <= (uint16_t)std::numeric_limits<uint8_t>::max()) {
o.pack_uint8(v.via.u64);
} else {
o.pack_uint16(v.via.u64);
}
} else {
if(v.via.u64 <= (uint64_t)std::numeric_limits<uint32_t>::max()) {
o.pack_uint32(v.via.u64);
} else {
o.pack_uint64(v.via.u64);
}
}
return o;
case type::NEGATIVE_INTEGER:
if(v.via.i64 >= (int64_t)std::numeric_limits<int16_t>::min()) {
if(v.via.i64 >= (int64_t)std::numeric_limits<int8_t>::min()) {
o.pack_int8(v.via.i64);
} else {
o.pack_int16(v.via.i64);
}
} else {
if(v.via.i64 >= (int64_t)std::numeric_limits<int32_t>::min()) {
o.pack_int64(v.via.i64);
} else {
o.pack_int64(v.via.i64);
}
}
return o;
case type::RAW:
o.pack_raw(v.via.ref.ptr, v.via.ref.size);
return o;
case type::ARRAY:
o.pack_array(v.via.container.size);
for(object* p(v.via.container.ptr),
* const pend(v.via.container.ptr + v.via.container.size);
p < pend; ++p) {
*p >> o;
}
return o;
// FIXME loop optimiziation
case type::MAP:
o.pack_map(v.via.container.size);
for(object* p(v.via.container.ptr),
* const pend(v.via.container.ptr + v.via.container.size*2);
p < pend; ) {
*p >> o; ++p;
*p >> o; ++p;
}
return o;
// FIXME loop optimiziation
default:
throw type_error();
}
}
} // namespace msgpack
#include "msgpack/type.hpp"
#endif /* msgpack/object.hpp */
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