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//
// MessagePack for C++ dynamic typed objects
//
// 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 <cstddef>
#include <stdexcept>
#include <typeinfo>
#include <ostream>
#include <vector>
#include <map>
#include <string>
namespace msgpack {
class type_error : public std::bad_cast { };
class cast_error : public type_error { };
class overflow_error : public type_error { };
class underflow_error : public type_error { };
class positive_overflow_error : public overflow_error { };
class negative_overflow_error : public overflow_error { };
struct mutable_raw {
explicit mutable_raw() : ptr(NULL), len(0) {}
explicit mutable_raw(char* p, size_t l) : ptr(p), len(l) {}
public:
char* ptr;
size_t len;
public:
std::string str() { return std::string(ptr, len); }
};
struct raw {
explicit raw() : ptr(NULL), len(0) {}
explicit raw(const char* p, size_t l) : ptr(p), len(l) {}
raw(const mutable_raw& m) : ptr(m.ptr), len(m.len) {}
public:
const char* ptr;
size_t len;
public:
std::string str() { return std::string(ptr, len); }
};
struct object;
typedef std::map<object, object> map;
typedef std::vector<object> array;
class dynamic_packer;
struct object_class {
virtual ~object_class() {}
virtual bool isnil () const { return false; }
virtual bool xbool () const { throw cast_error(); }
virtual uint8_t xu8 () const { throw cast_error(); }
virtual uint16_t xu16 () const { throw cast_error(); }
virtual uint32_t xu32 () const { throw cast_error(); }
virtual uint64_t xu64 () const { throw cast_error(); }
virtual int8_t xi8 () const { throw cast_error(); }
virtual int16_t xi16 () const { throw cast_error(); }
virtual int32_t xi32 () const { throw cast_error(); }
virtual int64_t xi64 () const { throw cast_error(); }
virtual float xfloat () const { throw cast_error(); }
virtual double xdouble() const { throw cast_error(); }
//virtual mutable_raw xraw () { throw cast_error(); } // FIXME
virtual array& xarray() { throw cast_error(); }
virtual map& xmap () { throw cast_error(); }
virtual raw xraw () const { throw cast_error(); }
virtual const array& xarray() const { throw cast_error(); }
virtual const map& xmap () const { throw cast_error(); }
virtual bool operator== (const object_class* x) const { return false; }
virtual bool operator< (const object_class* x) const { throw cast_error(); }
virtual bool operator> (const object_class* x) const { throw cast_error(); }
bool operator!= (const object_class* x) const { return !(this->operator==(x)); }
virtual void pack(dynamic_packer& p) const = 0;
operator bool() const { return xbool(); } // FIXME !isnil();
operator uint8_t() const { return xu8(); }
operator uint16_t() const { return xu16(); }
operator uint32_t() const { return xu32(); }
operator uint64_t() const { return xu64(); }
operator int8_t() const { return xi8(); }
operator int16_t() const { return xi16(); }
operator int32_t() const { return xi32(); }
operator int64_t() const { return xi64(); }
operator float() const { return xfloat(); }
operator double() const { return xdouble(); }
//operator mutable_raw() { return xraw(); } // FIXME
operator array&() { return xarray(); }
operator map&() { return xmap(); }
operator raw() const { return xraw(); }
operator const array&() const { return xarray(); }
operator const map&() const { return xmap(); }
virtual const object_class* inspect(std::ostream& s) const
{ s << '<' << typeid(*this).name() << '>'; return this; }
};
inline std::ostream& operator<< (std::ostream& s, const object_class* o)
{ o->inspect(s); return s; }
struct object_container_mixin {};
struct object_constructor_mixin {};
struct object {
explicit object() : val(NULL) {}
object(object_class* v) : val(v) {}
//object(object_class& v) : val(&v) {}
~object() {}
bool isnil () const { return val->isnil(); }
bool xbool () const { return val->xbool(); }
uint8_t xu8 () const { return val->xu8(); }
uint16_t xu16 () const { return val->xu16(); }
uint32_t xu32 () const { return val->xu32(); }
uint64_t xu64 () const { return val->xu64(); }
int8_t xi8 () const { return val->xi8(); }
int16_t xi16 () const { return val->xi16(); }
int32_t xi32 () const { return val->xi32(); }
int64_t xi64 () const { return val->xi64(); }
float xfloat () const { return val->xfloat(); }
double xdouble() const { return val->xdouble(); }
//mutable_raw xraw () { return val->xraw(); } // FIXME
array& xarray() { return val->xarray(); }
map& xmap () { return val->xmap(); }
raw xraw () const { return const_cast<const object_class*>(val)->xraw(); }
const array& xarray() const { return const_cast<const object_class*>(val)->xarray(); }
const map& xmap () const { return const_cast<const object_class*>(val)->xmap(); }
bool operator== (object x) const { return val->operator== (x.val); }
bool operator!= (object x) const { return val->operator!= (x.val); }
bool operator< (object x) const { return val->operator< (x.val); }
bool operator> (object x) const { return val->operator> (x.val); }
void pack(dynamic_packer& p) const { val->pack(p); }
template <typename Stream>
void pack(Stream& s) const { dynamic_packer p(s); pack(p); }
operator bool() const { return val->operator bool(); }
operator uint8_t() const { return val->operator uint8_t(); }
operator uint16_t() const { return val->operator uint16_t(); }
operator uint32_t() const { return val->operator uint32_t(); }
operator uint64_t() const { return val->operator uint64_t(); }
operator int8_t() const { return val->operator int8_t(); }
operator int16_t() const { return val->operator int16_t(); }
operator int32_t() const { return val->operator int32_t(); }
operator int64_t() const { return val->operator int64_t(); }
operator float() const { return val->operator float(); }
operator double() const { return val->operator double(); }
//operator mutable_raw() { return val->operator mutable_raw(); } // FIXME
operator array&() { return val->operator array&(); }
operator map&() { return val->operator map&(); }
operator raw() const { return val->operator raw(); }
operator const array&() const { return val->operator const array&(); }
operator const map&() const { return val->operator const map&(); }
const object& inspect(std::ostream& s) const
{ val->inspect(s); return *this; }
private:
friend class object_container_mixin;
friend class object_constructor_mixin;
object_class* val;
};
inline std::ostream& operator<< (std::ostream& s, const object& o)
{ o.inspect(s); return s; }
struct object_nil : object_class {
bool isnil() const;
bool operator== (const object_class* x) const;
void pack(dynamic_packer& p) const;
const object_class* inspect(std::ostream& s) const;
};
struct object_true : object_class {
bool xbool() const;
bool operator== (const object_class* x) const;
void pack(dynamic_packer& p) const;
const object_class* inspect(std::ostream& s) const;
};
struct object_false : object_class {
bool xbool() const;
bool operator== (const object_class* x) const;
void pack(dynamic_packer& p) const;
const object_class* inspect(std::ostream& s) const;
};
#define INTEGER_CLASS(TYPE, NAME) \
struct object_##NAME : object_class { \
explicit object_##NAME(TYPE v) : val(v) {} \
uint8_t xu8 () const; \
uint16_t xu16 () const; \
uint32_t xu32 () const; \
uint64_t xu64 () const; \
int8_t xi8 () const; \
int16_t xi16 () const; \
int32_t xi32 () const; \
int64_t xi64 () const; \
float xfloat () const; \
double xdouble() const; \
bool operator== (const object_class* x) const; \
bool operator< (const object_class* x) const; \
bool operator> (const object_class* x) const; \
void pack(dynamic_packer& p) const; \
const object_class* inspect(std::ostream& s) const; \
private: \
TYPE val; \
};
INTEGER_CLASS(uint8_t, u8)
INTEGER_CLASS(uint16_t, u16)
INTEGER_CLASS(uint32_t, u32)
INTEGER_CLASS(uint64_t, u64)
INTEGER_CLASS(int8_t, i8)
INTEGER_CLASS(int16_t, i16)
INTEGER_CLASS(int32_t, i32)
INTEGER_CLASS(int64_t, i64)
#undef INTEGER_CLASS
#define FLOAT_CLASS(TYPE, NAME) \
struct object_##NAME : object_class { \
object_##NAME(TYPE v) : val(v) {} \
uint8_t xu8 () const; \
uint16_t xu16 () const; \
uint32_t xu32 () const; \
uint64_t xu64 () const; \
int8_t xi8 () const; \
int16_t xi16 () const; \
int32_t xi32 () const; \
int64_t xi64 () const; \
float xfloat () const; \
double xdouble() const; \
bool operator== (const object_class* x) const; \
bool operator< (const object_class* x) const; \
bool operator> (const object_class* x) const; \
void pack(dynamic_packer& p) const; \
const object_class* inspect(std::ostream& s) const; \
private: \
TYPE val; \
};
FLOAT_CLASS(float, float)
FLOAT_CLASS(double, double)
#undef FLOAT_CLASS
#define RAW_CLASS(NAME, TYPE, EXTRA) \
struct object_##NAME : object_class { \
explicit object_##NAME(TYPE p, uint32_t l) : ptr(p), len(l) {} \
EXTRA \
bool operator== (const object_class* x) const; \
bool operator< (const object_class* x) const; \
bool operator> (const object_class* x) const; \
void pack(dynamic_packer& p) const; \
const object_class* inspect(std::ostream& s) const; \
private: \
TYPE ptr; \
uint32_t len; \
};
// FIXME
RAW_CLASS(mutable_raw_ref, char*, /*mutable_raw xraw();*/ raw xraw() const; )
RAW_CLASS(raw_ref, const char*, raw xraw() const; )
#undef RAW_CLASS
struct object_array : object_class, object_container_mixin {
explicit object_array() {}
explicit object_array(uint32_t n) { val.reserve(n); }
array& xarray();
const array& xarray() const;
bool operator== (const object_class* x) const;
// FIXME operator<, operator>
void pack(dynamic_packer& p) const;
const object_class* inspect(std::ostream& s) const;
public:
void push_back(object o) { val.push_back(o); }
private:
std::vector<object> val;
};
// FIXME hash, operator==: nil, true, false, array, mapを入れられない
struct object_map : object_class, object_container_mixin {
explicit object_map() {}
map& xmap();
const map& xmap() const;
bool operator== (const object_class* x) const;
// FIXME operator<, operator>
void pack(dynamic_packer& p) const;
const object_class* inspect(std::ostream& s) const;
public:
void store(object k, object v) { val[k] = v; }
private:
std::map<object, object> val;
};
} // namespace msgpack
#endif /* msgpack/object.hpp */
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