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https://github.com/msgpack/msgpack-c.git
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9923cf4daf
git-svn-id: file:///Users/frsyuki/project/msgpack-git/svn/x@67 5a5092ae-2292-43ba-b2d5-dcab9c1a2731
244 lines
8.0 KiB
C++
244 lines
8.0 KiB
C++
//
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// MessagePack for C++ static resolution routine
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//
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// Copyright (C) 2008 FURUHASHI Sadayuki
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef MSGPACK_TYPE_INTEGER_HPP__
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#define MSGPACK_TYPE_INTEGER_HPP__
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#include "msgpack/object.hpp"
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#include <limits>
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namespace msgpack {
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namespace type {
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namespace detail {
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template <typename T, bool Signed>
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struct convert_integer_sign;
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template <typename T>
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struct convert_integer_sign<T, true> {
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static inline T convert(object o) {
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if(o.type == POSITIVE_INTEGER) {
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if(o.via.u64 > (uint64_t)std::numeric_limits<T>::max())
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{ throw type_error(); }
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return o.via.u64;
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} else if(o.type == NEGATIVE_INTEGER) {
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if(o.via.i64 < (int64_t)-std::numeric_limits<T>::max())
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{ throw type_error(); }
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return o.via.i64;
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}
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throw type_error();
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}
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};
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template <typename T>
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struct convert_integer_sign<T, false> {
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static inline T convert(object o) {
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if(o.type == POSITIVE_INTEGER) {
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if(o.via.u64 > (uint64_t)std::numeric_limits<T>::max())
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{ throw type_error(); }
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return o.via.u64;
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}
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throw type_error();
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}
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};
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template <typename T>
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static inline T convert_integer(object o)
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{
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return detail::convert_integer_sign<T, std::numeric_limits<T>::is_signed>::convert(o);
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}
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template <typename T, typename Stream, int Size, bool Signed>
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struct pack_integer_size_sign;
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 1, true> {
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static inline void pack(T v, packer<Stream>& o)
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{ o.pack_int8(v); }
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 1, false> {
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static inline void pack(T v, packer<Stream>& o)
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{ o.pack_uint8(v); }
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 2, true> {
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static inline void pack(T v, packer<Stream>& o) {
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if( (int16_t)v <= (int16_t)std::numeric_limits<int8_t>::max() &&
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(int16_t)v >= (int16_t)std::numeric_limits<int8_t>::min())
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{ o.pack_int8(v); }
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else { o.pack_int16(v); }
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}
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 2, false> {
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static inline void pack(T v, packer<Stream>& o) {
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if( (uint16_t)v <= (uint16_t)std::numeric_limits<uint8_t>::max())
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{ o.pack_uint8(v); }
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else { o.pack_uint16(v); }
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}
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 4, true> {
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static inline void pack(T v, packer<Stream>& o) {
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if( (int32_t)v <= (int32_t)std::numeric_limits<int8_t>::max() &&
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(int32_t)v >= (int32_t)std::numeric_limits<int8_t>::min())
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{ o.pack_int8(v); }
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else if( (int32_t)v <= (int32_t)std::numeric_limits<int16_t>::max() &&
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(int32_t)v >= (int32_t)std::numeric_limits<int16_t>::min())
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{ o.pack_int16(v); }
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else { o.pack_int32(v); }
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}
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 4, false> {
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static inline void pack(T v, packer<Stream>& o) {
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if( (uint32_t)v <= (uint32_t)std::numeric_limits<uint8_t>::max())
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{ o.pack_uint8(v); }
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else if( (uint32_t)v <= (uint32_t)std::numeric_limits<uint16_t>::max())
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{ o.pack_uint16(v); }
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else { o.pack_uint32(v); }
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}
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 8, true> {
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static inline void pack(T v, packer<Stream>& o) {
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if( (int64_t)v <= (int64_t)std::numeric_limits<int8_t>::max() &&
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(int64_t)v >= (int64_t)std::numeric_limits<int8_t>::min())
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{ o.pack_int8(v); }
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else if( (int64_t)v <= (int64_t)std::numeric_limits<int16_t>::max() &&
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(int64_t)v >= (int64_t)std::numeric_limits<int16_t>::min())
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{ o.pack_int16(v); }
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else if( (int64_t)v <= (int64_t)std::numeric_limits<int32_t>::max() &&
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(int64_t)v >= (int64_t)std::numeric_limits<int32_t>::min())
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{ o.pack_int32(v); }
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else { o.pack_int64(v); }
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}
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};
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template <typename T, typename Stream>
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struct pack_integer_size_sign<T, Stream, 8, false> {
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static inline void pack(T v, packer<Stream>& o) {
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if( (uint64_t)v <= (uint64_t)std::numeric_limits<uint8_t>::max())
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{ o.pack_uint8(v); }
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else if( (uint64_t)v <= (uint64_t)std::numeric_limits<uint16_t>::max())
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{ o.pack_uint16(v); }
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else if( (uint64_t)v <= (uint64_t)std::numeric_limits<uint32_t>::max())
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{ o.pack_uint32(v); }
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else { o.pack_uint64(v); }
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}
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};
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template <typename T, typename Stream>
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static inline void pack_integer(T v, packer<Stream>& o)
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{
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pack_integer_size_sign<T, Stream, sizeof(T), std::numeric_limits<T>::is_signed>::pack(v, o);
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}
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} // namespace detail
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inline signed char& operator<< (signed char& v, object o)
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{ v = detail::convert_integer<signed char>(o); return v; }
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inline signed short& operator<< (signed short& v, object o)
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{ v = detail::convert_integer<signed short>(o); return v; }
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inline signed int& operator<< (signed int& v, object o)
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{ v = detail::convert_integer<signed int>(o); return v; }
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inline signed long& operator<< (signed long& v, object o)
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{ v = detail::convert_integer<signed long>(o); return v; }
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inline signed long long& operator<< (signed long long& v, object o)
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{ v = detail::convert_integer<signed long long>(o); return v; }
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inline unsigned char& operator<< (unsigned char& v, object o)
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{ v = detail::convert_integer<unsigned char>(o); return v; }
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inline unsigned short& operator<< (unsigned short& v, object o)
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{ v = detail::convert_integer<unsigned short>(o); return v; }
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inline unsigned int& operator<< (unsigned int& v, object o)
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{ v = detail::convert_integer<unsigned int>(o); return v; }
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inline unsigned long& operator<< (unsigned long& v, object o)
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{ v = detail::convert_integer<unsigned long>(o); return v; }
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inline unsigned long long& operator<< (unsigned long long& v, object o)
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{ v = detail::convert_integer<unsigned long long>(o); return v; }
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template <typename Stream>
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inline const signed char& operator>> (const signed char& v, packer<Stream> o)
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{ detail::pack_integer<signed char>(v, o); return v; }
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template <typename Stream>
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inline const signed short& operator>> (const signed short& v, packer<Stream> o)
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{ detail::pack_integer<signed short>(v, o); return v; }
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template <typename Stream>
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inline const signed int& operator>> (const signed int& v, packer<Stream> o)
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{ detail::pack_integer<signed int>(v, o); return v; }
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template <typename Stream>
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inline const signed long& operator>> (const signed long& v, packer<Stream> o)
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{ detail::pack_integer<signed long>(v, o); return v; }
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template <typename Stream>
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inline const signed long long& operator>> (const signed long long& v, packer<Stream> o)
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{ detail::pack_integer<signed long long>(v, o); return v; }
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template <typename Stream>
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inline const unsigned char& operator>> (const unsigned char& v, packer<Stream> o)
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{ detail::pack_integer<unsigned char>(v, o); return v; }
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template <typename Stream>
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inline const unsigned short& operator>> (const unsigned short& v, packer<Stream> o)
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{ detail::pack_integer<unsigned short>(v, o); return v; }
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template <typename Stream>
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inline const unsigned int& operator>> (const unsigned int& v, packer<Stream> o)
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{ detail::pack_integer<unsigned int>(v, o); return v; }
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template <typename Stream>
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inline const unsigned long& operator>> (const unsigned long& v, packer<Stream> o)
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{ detail::pack_integer<unsigned long>(v, o); return v; }
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template <typename Stream>
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inline const unsigned long long& operator>> (const unsigned long long& v, packer<Stream> o)
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{ detail::pack_integer<unsigned long long>(v, o); return v; }
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} // namespace type
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} // namespace msgpack
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#endif /* msgpack/type/integer.hpp */
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