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960 lines
27 KiB
C++
960 lines
27 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2016 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_SERIALIZE_H
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#define BITCOIN_SERIALIZE_H
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#include "compat/endian.h"
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#include <algorithm>
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#include <assert.h>
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#include <ios>
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#include <limits>
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#include <map>
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#include <memory>
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#include <set>
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#include <stdint.h>
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#include <string>
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#include <string.h>
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#include <utility>
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#include <vector>
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#include "prevector.h"
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static const unsigned int MAX_SIZE = 0x02000000;
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/**
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* Dummy data type to identify deserializing constructors.
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*
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* By convention, a constructor of a type T with signature
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*
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* template <typename Stream> T::T(deserialize_type, Stream& s)
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*
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* is a deserializing constructor, which builds the type by
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* deserializing it from s. If T contains const fields, this
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* is likely the only way to do so.
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*/
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struct deserialize_type {};
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constexpr deserialize_type deserialize {};
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/**
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* Used to bypass the rule against non-const reference to temporary
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* where it makes sense with wrappers such as CFlatData or CTxDB
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*/
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template<typename T>
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inline T& REF(const T& val)
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{
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return const_cast<T&>(val);
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}
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/**
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* Used to acquire a non-const pointer "this" to generate bodies
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* of const serialization operations from a template
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*/
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template<typename T>
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inline T* NCONST_PTR(const T* val)
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{
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return const_cast<T*>(val);
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}
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/*
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* Lowest-level serialization and conversion.
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* @note Sizes of these types are verified in the tests
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*/
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template<typename Stream> inline void ser_writedata8(Stream &s, uint8_t obj)
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{
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s.write((char*)&obj, 1);
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}
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template<typename Stream> inline void ser_writedata16(Stream &s, uint16_t obj)
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{
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obj = htole16(obj);
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s.write((char*)&obj, 2);
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}
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template<typename Stream> inline void ser_writedata32(Stream &s, uint32_t obj)
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{
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obj = htole32(obj);
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s.write((char*)&obj, 4);
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}
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template<typename Stream> inline void ser_writedata64(Stream &s, uint64_t obj)
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{
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obj = htole64(obj);
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s.write((char*)&obj, 8);
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}
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template<typename Stream> inline uint8_t ser_readdata8(Stream &s)
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{
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uint8_t obj;
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s.read((char*)&obj, 1);
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return obj;
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}
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template<typename Stream> inline uint16_t ser_readdata16(Stream &s)
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{
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uint16_t obj;
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s.read((char*)&obj, 2);
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return le16toh(obj);
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}
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template<typename Stream> inline uint32_t ser_readdata32(Stream &s)
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{
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uint32_t obj;
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s.read((char*)&obj, 4);
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return le32toh(obj);
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}
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template<typename Stream> inline uint64_t ser_readdata64(Stream &s)
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{
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uint64_t obj;
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s.read((char*)&obj, 8);
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return le64toh(obj);
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}
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inline uint64_t ser_double_to_uint64(double x)
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{
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union { double x; uint64_t y; } tmp;
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tmp.x = x;
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return tmp.y;
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}
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inline uint32_t ser_float_to_uint32(float x)
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{
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union { float x; uint32_t y; } tmp;
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tmp.x = x;
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return tmp.y;
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}
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inline double ser_uint64_to_double(uint64_t y)
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{
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union { double x; uint64_t y; } tmp;
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tmp.y = y;
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return tmp.x;
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}
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inline float ser_uint32_to_float(uint32_t y)
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{
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union { float x; uint32_t y; } tmp;
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tmp.y = y;
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return tmp.x;
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}
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/////////////////////////////////////////////////////////////////
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//
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// Templates for serializing to anything that looks like a stream,
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// i.e. anything that supports .read(char*, size_t) and .write(char*, size_t)
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//
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class CSizeComputer;
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enum
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{
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// primary actions
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SER_NETWORK = (1 << 0),
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SER_DISK = (1 << 1),
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SER_GETHASH = (1 << 2),
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};
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#define READWRITE(obj) (::SerReadWrite(s, (obj), ser_action))
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#define READWRITEMANY(...) (::SerReadWriteMany(s, ser_action, __VA_ARGS__))
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/**
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* Implement three methods for serializable objects. These are actually wrappers over
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* "SerializationOp" template, which implements the body of each class' serialization
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* code. Adding "ADD_SERIALIZE_METHODS" in the body of the class causes these wrappers to be
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* added as members.
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*/
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#define ADD_SERIALIZE_METHODS \
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template<typename Stream> \
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void Serialize(Stream& s) const { \
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NCONST_PTR(this)->SerializationOp(s, CSerActionSerialize()); \
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} \
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template<typename Stream> \
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void Unserialize(Stream& s) { \
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SerializationOp(s, CSerActionUnserialize()); \
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}
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template<typename Stream> inline void Serialize(Stream& s, char a ) { ser_writedata8(s, a); } // TODO Get rid of bare char
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template<typename Stream> inline void Serialize(Stream& s, int8_t a ) { ser_writedata8(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, uint8_t a ) { ser_writedata8(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, int16_t a ) { ser_writedata16(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, uint16_t a) { ser_writedata16(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, int32_t a ) { ser_writedata32(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, uint32_t a) { ser_writedata32(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, int64_t a ) { ser_writedata64(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, uint64_t a) { ser_writedata64(s, a); }
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template<typename Stream> inline void Serialize(Stream& s, float a ) { ser_writedata32(s, ser_float_to_uint32(a)); }
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template<typename Stream> inline void Serialize(Stream& s, double a ) { ser_writedata64(s, ser_double_to_uint64(a)); }
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template<typename Stream> inline void Unserialize(Stream& s, char& a ) { a = ser_readdata8(s); } // TODO Get rid of bare char
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template<typename Stream> inline void Unserialize(Stream& s, int8_t& a ) { a = ser_readdata8(s); }
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template<typename Stream> inline void Unserialize(Stream& s, uint8_t& a ) { a = ser_readdata8(s); }
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template<typename Stream> inline void Unserialize(Stream& s, int16_t& a ) { a = ser_readdata16(s); }
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template<typename Stream> inline void Unserialize(Stream& s, uint16_t& a) { a = ser_readdata16(s); }
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template<typename Stream> inline void Unserialize(Stream& s, int32_t& a ) { a = ser_readdata32(s); }
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template<typename Stream> inline void Unserialize(Stream& s, uint32_t& a) { a = ser_readdata32(s); }
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template<typename Stream> inline void Unserialize(Stream& s, int64_t& a ) { a = ser_readdata64(s); }
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template<typename Stream> inline void Unserialize(Stream& s, uint64_t& a) { a = ser_readdata64(s); }
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template<typename Stream> inline void Unserialize(Stream& s, float& a ) { a = ser_uint32_to_float(ser_readdata32(s)); }
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template<typename Stream> inline void Unserialize(Stream& s, double& a ) { a = ser_uint64_to_double(ser_readdata64(s)); }
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template<typename Stream> inline void Serialize(Stream& s, bool a) { char f=a; ser_writedata8(s, f); }
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template<typename Stream> inline void Unserialize(Stream& s, bool& a) { char f=ser_readdata8(s); a=f; }
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/**
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* Compact Size
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* size < 253 -- 1 byte
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* size <= USHRT_MAX -- 3 bytes (253 + 2 bytes)
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* size <= UINT_MAX -- 5 bytes (254 + 4 bytes)
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* size > UINT_MAX -- 9 bytes (255 + 8 bytes)
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*/
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inline unsigned int GetSizeOfCompactSize(uint64_t nSize)
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{
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if (nSize < 253) return sizeof(unsigned char);
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else if (nSize <= std::numeric_limits<unsigned short>::max()) return sizeof(unsigned char) + sizeof(unsigned short);
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else if (nSize <= std::numeric_limits<unsigned int>::max()) return sizeof(unsigned char) + sizeof(unsigned int);
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else return sizeof(unsigned char) + sizeof(uint64_t);
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}
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inline void WriteCompactSize(CSizeComputer& os, uint64_t nSize);
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template<typename Stream>
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void WriteCompactSize(Stream& os, uint64_t nSize)
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{
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if (nSize < 253)
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{
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ser_writedata8(os, nSize);
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}
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else if (nSize <= std::numeric_limits<unsigned short>::max())
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{
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ser_writedata8(os, 253);
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ser_writedata16(os, nSize);
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}
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else if (nSize <= std::numeric_limits<unsigned int>::max())
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{
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ser_writedata8(os, 254);
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ser_writedata32(os, nSize);
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}
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else
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{
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ser_writedata8(os, 255);
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ser_writedata64(os, nSize);
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}
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return;
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}
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template<typename Stream>
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uint64_t ReadCompactSize(Stream& is)
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{
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uint8_t chSize = ser_readdata8(is);
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uint64_t nSizeRet = 0;
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if (chSize < 253)
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{
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nSizeRet = chSize;
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}
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else if (chSize == 253)
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{
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nSizeRet = ser_readdata16(is);
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if (nSizeRet < 253)
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throw std::ios_base::failure("non-canonical ReadCompactSize()");
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}
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else if (chSize == 254)
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{
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nSizeRet = ser_readdata32(is);
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if (nSizeRet < 0x10000u)
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throw std::ios_base::failure("non-canonical ReadCompactSize()");
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}
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else
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{
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nSizeRet = ser_readdata64(is);
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if (nSizeRet < 0x100000000ULL)
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throw std::ios_base::failure("non-canonical ReadCompactSize()");
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}
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if (nSizeRet > (uint64_t)MAX_SIZE)
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throw std::ios_base::failure("ReadCompactSize(): size too large");
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return nSizeRet;
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}
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/**
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* Variable-length integers: bytes are a MSB base-128 encoding of the number.
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* The high bit in each byte signifies whether another digit follows. To make
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* sure the encoding is one-to-one, one is subtracted from all but the last digit.
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* Thus, the byte sequence a[] with length len, where all but the last byte
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* has bit 128 set, encodes the number:
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*
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* (a[len-1] & 0x7F) + sum(i=1..len-1, 128^i*((a[len-i-1] & 0x7F)+1))
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*
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* Properties:
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* * Very small (0-127: 1 byte, 128-16511: 2 bytes, 16512-2113663: 3 bytes)
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* * Every integer has exactly one encoding
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* * Encoding does not depend on size of original integer type
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* * No redundancy: every (infinite) byte sequence corresponds to a list
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* of encoded integers.
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*
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* 0: [0x00] 256: [0x81 0x00]
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* 1: [0x01] 16383: [0xFE 0x7F]
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* 127: [0x7F] 16384: [0xFF 0x00]
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* 128: [0x80 0x00] 16511: [0xFF 0x7F]
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* 255: [0x80 0x7F] 65535: [0x82 0xFE 0x7F]
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* 2^32: [0x8E 0xFE 0xFE 0xFF 0x00]
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*/
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template<typename I>
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inline unsigned int GetSizeOfVarInt(I n)
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{
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int nRet = 0;
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while(true) {
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nRet++;
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if (n <= 0x7F)
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break;
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n = (n >> 7) - 1;
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}
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return nRet;
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}
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template<typename I>
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inline void WriteVarInt(CSizeComputer& os, I n);
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template<typename Stream, typename I>
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void WriteVarInt(Stream& os, I n)
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{
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unsigned char tmp[(sizeof(n)*8+6)/7];
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int len=0;
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while(true) {
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tmp[len] = (n & 0x7F) | (len ? 0x80 : 0x00);
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if (n <= 0x7F)
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break;
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n = (n >> 7) - 1;
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len++;
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}
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do {
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ser_writedata8(os, tmp[len]);
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} while(len--);
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}
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template<typename Stream, typename I>
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I ReadVarInt(Stream& is)
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{
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I n = 0;
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while(true) {
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unsigned char chData = ser_readdata8(is);
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n = (n << 7) | (chData & 0x7F);
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if (chData & 0x80)
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n++;
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else
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return n;
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}
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}
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#define FLATDATA(obj) REF(CFlatData((char*)&(obj), (char*)&(obj) + sizeof(obj)))
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#define VARINT(obj) REF(WrapVarInt(REF(obj)))
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#define COMPACTSIZE(obj) REF(CCompactSize(REF(obj)))
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#define LIMITED_STRING(obj,n) REF(LimitedString< n >(REF(obj)))
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/**
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* Wrapper for serializing arrays and POD.
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*/
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class CFlatData
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{
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protected:
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char* pbegin;
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char* pend;
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public:
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CFlatData(void* pbeginIn, void* pendIn) : pbegin((char*)pbeginIn), pend((char*)pendIn) { }
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template <class T, class TAl>
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explicit CFlatData(std::vector<T,TAl> &v)
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{
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pbegin = (char*)v.data();
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pend = (char*)(v.data() + v.size());
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}
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template <unsigned int N, typename T, typename S, typename D>
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explicit CFlatData(prevector<N, T, S, D> &v)
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{
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pbegin = (char*)v.data();
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pend = (char*)(v.data() + v.size());
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}
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char* begin() { return pbegin; }
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const char* begin() const { return pbegin; }
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char* end() { return pend; }
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const char* end() const { return pend; }
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template<typename Stream>
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void Serialize(Stream& s) const
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{
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s.write(pbegin, pend - pbegin);
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}
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template<typename Stream>
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void Unserialize(Stream& s)
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{
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s.read(pbegin, pend - pbegin);
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}
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};
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template<typename I>
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class CVarInt
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{
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protected:
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I &n;
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public:
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CVarInt(I& nIn) : n(nIn) { }
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template<typename Stream>
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void Serialize(Stream &s) const {
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WriteVarInt<Stream,I>(s, n);
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}
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template<typename Stream>
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void Unserialize(Stream& s) {
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n = ReadVarInt<Stream,I>(s);
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}
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};
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class CCompactSize
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{
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protected:
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uint64_t &n;
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public:
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CCompactSize(uint64_t& nIn) : n(nIn) { }
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template<typename Stream>
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void Serialize(Stream &s) const {
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WriteCompactSize<Stream>(s, n);
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}
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template<typename Stream>
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void Unserialize(Stream& s) {
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n = ReadCompactSize<Stream>(s);
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}
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};
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template<size_t Limit>
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class LimitedString
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{
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protected:
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std::string& string;
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public:
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LimitedString(std::string& _string) : string(_string) {}
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template<typename Stream>
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void Unserialize(Stream& s)
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{
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size_t size = ReadCompactSize(s);
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if (size > Limit) {
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throw std::ios_base::failure("String length limit exceeded");
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}
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string.resize(size);
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if (size != 0)
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s.read((char*)&string[0], size);
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}
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template<typename Stream>
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void Serialize(Stream& s) const
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{
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WriteCompactSize(s, string.size());
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if (!string.empty())
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s.write((char*)&string[0], string.size());
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}
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};
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template<typename I>
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CVarInt<I> WrapVarInt(I& n) { return CVarInt<I>(n); }
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/**
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* Forward declarations
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*/
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/**
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* string
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*/
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template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str);
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template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str);
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/**
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* prevector
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* prevectors of unsigned char are a special case and are intended to be serialized as a single opaque blob.
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*/
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template<typename Stream, unsigned int N, typename T> void Serialize_impl(Stream& os, const prevector<N, T>& v, const unsigned char&);
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template<typename Stream, unsigned int N, typename T, typename V> void Serialize_impl(Stream& os, const prevector<N, T>& v, const V&);
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template<typename Stream, unsigned int N, typename T> inline void Serialize(Stream& os, const prevector<N, T>& v);
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template<typename Stream, unsigned int N, typename T> void Unserialize_impl(Stream& is, prevector<N, T>& v, const unsigned char&);
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template<typename Stream, unsigned int N, typename T, typename V> void Unserialize_impl(Stream& is, prevector<N, T>& v, const V&);
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template<typename Stream, unsigned int N, typename T> inline void Unserialize(Stream& is, prevector<N, T>& v);
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/**
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* vector
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* vectors of unsigned char are a special case and are intended to be serialized as a single opaque blob.
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*/
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template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, const unsigned char&);
|
|
template<typename Stream, typename T, typename A, typename V> void Serialize_impl(Stream& os, const std::vector<T, A>& v, const V&);
|
|
template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v);
|
|
template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, const unsigned char&);
|
|
template<typename Stream, typename T, typename A, typename V> void Unserialize_impl(Stream& is, std::vector<T, A>& v, const V&);
|
|
template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v);
|
|
|
|
/**
|
|
* pair
|
|
*/
|
|
template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item);
|
|
template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item);
|
|
|
|
/**
|
|
* map
|
|
*/
|
|
template<typename Stream, typename K, typename T, typename Pred, typename A> void Serialize(Stream& os, const std::map<K, T, Pred, A>& m);
|
|
template<typename Stream, typename K, typename T, typename Pred, typename A> void Unserialize(Stream& is, std::map<K, T, Pred, A>& m);
|
|
|
|
/**
|
|
* set
|
|
*/
|
|
template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m);
|
|
template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m);
|
|
|
|
/**
|
|
* shared_ptr
|
|
*/
|
|
template<typename Stream, typename T> void Serialize(Stream& os, const std::shared_ptr<const T>& p);
|
|
template<typename Stream, typename T> void Unserialize(Stream& os, std::shared_ptr<const T>& p);
|
|
|
|
/**
|
|
* unique_ptr
|
|
*/
|
|
template<typename Stream, typename T> void Serialize(Stream& os, const std::unique_ptr<const T>& p);
|
|
template<typename Stream, typename T> void Unserialize(Stream& os, std::unique_ptr<const T>& p);
|
|
|
|
|
|
|
|
/**
|
|
* If none of the specialized versions above matched, default to calling member function.
|
|
*/
|
|
template<typename Stream, typename T>
|
|
inline void Serialize(Stream& os, const T& a)
|
|
{
|
|
a.Serialize(os);
|
|
}
|
|
|
|
template<typename Stream, typename T>
|
|
inline void Unserialize(Stream& is, T& a)
|
|
{
|
|
a.Unserialize(is);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* string
|
|
*/
|
|
template<typename Stream, typename C>
|
|
void Serialize(Stream& os, const std::basic_string<C>& str)
|
|
{
|
|
WriteCompactSize(os, str.size());
|
|
if (!str.empty())
|
|
os.write((char*)&str[0], str.size() * sizeof(str[0]));
|
|
}
|
|
|
|
template<typename Stream, typename C>
|
|
void Unserialize(Stream& is, std::basic_string<C>& str)
|
|
{
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
str.resize(nSize);
|
|
if (nSize != 0)
|
|
is.read((char*)&str[0], nSize * sizeof(str[0]));
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* prevector
|
|
*/
|
|
template<typename Stream, unsigned int N, typename T>
|
|
void Serialize_impl(Stream& os, const prevector<N, T>& v, const unsigned char&)
|
|
{
|
|
WriteCompactSize(os, v.size());
|
|
if (!v.empty())
|
|
os.write((char*)&v[0], v.size() * sizeof(T));
|
|
}
|
|
|
|
template<typename Stream, unsigned int N, typename T, typename V>
|
|
void Serialize_impl(Stream& os, const prevector<N, T>& v, const V&)
|
|
{
|
|
WriteCompactSize(os, v.size());
|
|
for (typename prevector<N, T>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
|
|
::Serialize(os, (*vi));
|
|
}
|
|
|
|
template<typename Stream, unsigned int N, typename T>
|
|
inline void Serialize(Stream& os, const prevector<N, T>& v)
|
|
{
|
|
Serialize_impl(os, v, T());
|
|
}
|
|
|
|
|
|
template<typename Stream, unsigned int N, typename T>
|
|
void Unserialize_impl(Stream& is, prevector<N, T>& v, const unsigned char&)
|
|
{
|
|
// Limit size per read so bogus size value won't cause out of memory
|
|
v.clear();
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
unsigned int i = 0;
|
|
while (i < nSize)
|
|
{
|
|
unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
|
|
v.resize(i + blk);
|
|
is.read((char*)&v[i], blk * sizeof(T));
|
|
i += blk;
|
|
}
|
|
}
|
|
|
|
template<typename Stream, unsigned int N, typename T, typename V>
|
|
void Unserialize_impl(Stream& is, prevector<N, T>& v, const V&)
|
|
{
|
|
v.clear();
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
unsigned int i = 0;
|
|
unsigned int nMid = 0;
|
|
while (nMid < nSize)
|
|
{
|
|
nMid += 5000000 / sizeof(T);
|
|
if (nMid > nSize)
|
|
nMid = nSize;
|
|
v.resize(nMid);
|
|
for (; i < nMid; i++)
|
|
Unserialize(is, v[i]);
|
|
}
|
|
}
|
|
|
|
template<typename Stream, unsigned int N, typename T>
|
|
inline void Unserialize(Stream& is, prevector<N, T>& v)
|
|
{
|
|
Unserialize_impl(is, v, T());
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* vector
|
|
*/
|
|
template<typename Stream, typename T, typename A>
|
|
void Serialize_impl(Stream& os, const std::vector<T, A>& v, const unsigned char&)
|
|
{
|
|
WriteCompactSize(os, v.size());
|
|
if (!v.empty())
|
|
os.write((char*)&v[0], v.size() * sizeof(T));
|
|
}
|
|
|
|
template<typename Stream, typename T, typename A, typename V>
|
|
void Serialize_impl(Stream& os, const std::vector<T, A>& v, const V&)
|
|
{
|
|
WriteCompactSize(os, v.size());
|
|
for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
|
|
::Serialize(os, (*vi));
|
|
}
|
|
|
|
template<typename Stream, typename T, typename A>
|
|
inline void Serialize(Stream& os, const std::vector<T, A>& v)
|
|
{
|
|
Serialize_impl(os, v, T());
|
|
}
|
|
|
|
|
|
template<typename Stream, typename T, typename A>
|
|
void Unserialize_impl(Stream& is, std::vector<T, A>& v, const unsigned char&)
|
|
{
|
|
// Limit size per read so bogus size value won't cause out of memory
|
|
v.clear();
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
unsigned int i = 0;
|
|
while (i < nSize)
|
|
{
|
|
unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
|
|
v.resize(i + blk);
|
|
is.read((char*)&v[i], blk * sizeof(T));
|
|
i += blk;
|
|
}
|
|
}
|
|
|
|
template<typename Stream, typename T, typename A, typename V>
|
|
void Unserialize_impl(Stream& is, std::vector<T, A>& v, const V&)
|
|
{
|
|
v.clear();
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
unsigned int i = 0;
|
|
unsigned int nMid = 0;
|
|
while (nMid < nSize)
|
|
{
|
|
nMid += 5000000 / sizeof(T);
|
|
if (nMid > nSize)
|
|
nMid = nSize;
|
|
v.resize(nMid);
|
|
for (; i < nMid; i++)
|
|
Unserialize(is, v[i]);
|
|
}
|
|
}
|
|
|
|
template<typename Stream, typename T, typename A>
|
|
inline void Unserialize(Stream& is, std::vector<T, A>& v)
|
|
{
|
|
Unserialize_impl(is, v, T());
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* pair
|
|
*/
|
|
template<typename Stream, typename K, typename T>
|
|
void Serialize(Stream& os, const std::pair<K, T>& item)
|
|
{
|
|
Serialize(os, item.first);
|
|
Serialize(os, item.second);
|
|
}
|
|
|
|
template<typename Stream, typename K, typename T>
|
|
void Unserialize(Stream& is, std::pair<K, T>& item)
|
|
{
|
|
Unserialize(is, item.first);
|
|
Unserialize(is, item.second);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* map
|
|
*/
|
|
template<typename Stream, typename K, typename T, typename Pred, typename A>
|
|
void Serialize(Stream& os, const std::map<K, T, Pred, A>& m)
|
|
{
|
|
WriteCompactSize(os, m.size());
|
|
for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
|
|
Serialize(os, (*mi));
|
|
}
|
|
|
|
template<typename Stream, typename K, typename T, typename Pred, typename A>
|
|
void Unserialize(Stream& is, std::map<K, T, Pred, A>& m)
|
|
{
|
|
m.clear();
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
typename std::map<K, T, Pred, A>::iterator mi = m.begin();
|
|
for (unsigned int i = 0; i < nSize; i++)
|
|
{
|
|
std::pair<K, T> item;
|
|
Unserialize(is, item);
|
|
mi = m.insert(mi, item);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* set
|
|
*/
|
|
template<typename Stream, typename K, typename Pred, typename A>
|
|
void Serialize(Stream& os, const std::set<K, Pred, A>& m)
|
|
{
|
|
WriteCompactSize(os, m.size());
|
|
for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
|
|
Serialize(os, (*it));
|
|
}
|
|
|
|
template<typename Stream, typename K, typename Pred, typename A>
|
|
void Unserialize(Stream& is, std::set<K, Pred, A>& m)
|
|
{
|
|
m.clear();
|
|
unsigned int nSize = ReadCompactSize(is);
|
|
typename std::set<K, Pred, A>::iterator it = m.begin();
|
|
for (unsigned int i = 0; i < nSize; i++)
|
|
{
|
|
K key;
|
|
Unserialize(is, key);
|
|
it = m.insert(it, key);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* unique_ptr
|
|
*/
|
|
template<typename Stream, typename T> void
|
|
Serialize(Stream& os, const std::unique_ptr<const T>& p)
|
|
{
|
|
Serialize(os, *p);
|
|
}
|
|
|
|
template<typename Stream, typename T>
|
|
void Unserialize(Stream& is, std::unique_ptr<const T>& p)
|
|
{
|
|
p.reset(new T(deserialize, is));
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* shared_ptr
|
|
*/
|
|
template<typename Stream, typename T> void
|
|
Serialize(Stream& os, const std::shared_ptr<const T>& p)
|
|
{
|
|
Serialize(os, *p);
|
|
}
|
|
|
|
template<typename Stream, typename T>
|
|
void Unserialize(Stream& is, std::shared_ptr<const T>& p)
|
|
{
|
|
p = std::make_shared<const T>(deserialize, is);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Support for ADD_SERIALIZE_METHODS and READWRITE macro
|
|
*/
|
|
struct CSerActionSerialize
|
|
{
|
|
constexpr bool ForRead() const { return false; }
|
|
};
|
|
struct CSerActionUnserialize
|
|
{
|
|
constexpr bool ForRead() const { return true; }
|
|
};
|
|
|
|
template<typename Stream, typename T>
|
|
inline void SerReadWrite(Stream& s, const T& obj, CSerActionSerialize ser_action)
|
|
{
|
|
::Serialize(s, obj);
|
|
}
|
|
|
|
template<typename Stream, typename T>
|
|
inline void SerReadWrite(Stream& s, T& obj, CSerActionUnserialize ser_action)
|
|
{
|
|
::Unserialize(s, obj);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* ::GetSerializeSize implementations
|
|
*
|
|
* Computing the serialized size of objects is done through a special stream
|
|
* object of type CSizeComputer, which only records the number of bytes written
|
|
* to it.
|
|
*
|
|
* If your Serialize or SerializationOp method has non-trivial overhead for
|
|
* serialization, it may be worthwhile to implement a specialized version for
|
|
* CSizeComputer, which uses the s.seek() method to record bytes that would
|
|
* be written instead.
|
|
*/
|
|
class CSizeComputer
|
|
{
|
|
protected:
|
|
size_t nSize;
|
|
|
|
const int nType;
|
|
const int nVersion;
|
|
public:
|
|
CSizeComputer(int nTypeIn, int nVersionIn) : nSize(0), nType(nTypeIn), nVersion(nVersionIn) {}
|
|
|
|
void write(const char *psz, size_t _nSize)
|
|
{
|
|
this->nSize += _nSize;
|
|
}
|
|
|
|
/** Pretend _nSize bytes are written, without specifying them. */
|
|
void seek(size_t _nSize)
|
|
{
|
|
this->nSize += _nSize;
|
|
}
|
|
|
|
template<typename T>
|
|
CSizeComputer& operator<<(const T& obj)
|
|
{
|
|
::Serialize(*this, obj);
|
|
return (*this);
|
|
}
|
|
|
|
size_t size() const {
|
|
return nSize;
|
|
}
|
|
|
|
int GetVersion() const { return nVersion; }
|
|
int GetType() const { return nType; }
|
|
};
|
|
|
|
template<typename Stream>
|
|
void SerializeMany(Stream& s)
|
|
{
|
|
}
|
|
|
|
template<typename Stream, typename Arg>
|
|
void SerializeMany(Stream& s, Arg&& arg)
|
|
{
|
|
::Serialize(s, std::forward<Arg>(arg));
|
|
}
|
|
|
|
template<typename Stream, typename Arg, typename... Args>
|
|
void SerializeMany(Stream& s, Arg&& arg, Args&&... args)
|
|
{
|
|
::Serialize(s, std::forward<Arg>(arg));
|
|
::SerializeMany(s, std::forward<Args>(args)...);
|
|
}
|
|
|
|
template<typename Stream>
|
|
inline void UnserializeMany(Stream& s)
|
|
{
|
|
}
|
|
|
|
template<typename Stream, typename Arg>
|
|
inline void UnserializeMany(Stream& s, Arg& arg)
|
|
{
|
|
::Unserialize(s, arg);
|
|
}
|
|
|
|
template<typename Stream, typename Arg, typename... Args>
|
|
inline void UnserializeMany(Stream& s, Arg& arg, Args&... args)
|
|
{
|
|
::Unserialize(s, arg);
|
|
::UnserializeMany(s, args...);
|
|
}
|
|
|
|
template<typename Stream, typename... Args>
|
|
inline void SerReadWriteMany(Stream& s, CSerActionSerialize ser_action, Args&&... args)
|
|
{
|
|
::SerializeMany(s, std::forward<Args>(args)...);
|
|
}
|
|
|
|
template<typename Stream, typename... Args>
|
|
inline void SerReadWriteMany(Stream& s, CSerActionUnserialize ser_action, Args&... args)
|
|
{
|
|
::UnserializeMany(s, args...);
|
|
}
|
|
|
|
template<typename I>
|
|
inline void WriteVarInt(CSizeComputer &s, I n)
|
|
{
|
|
s.seek(GetSizeOfVarInt<I>(n));
|
|
}
|
|
|
|
inline void WriteCompactSize(CSizeComputer &s, uint64_t nSize)
|
|
{
|
|
s.seek(GetSizeOfCompactSize(nSize));
|
|
}
|
|
|
|
template <typename T>
|
|
size_t GetSerializeSize(const T& t, int nType, int nVersion = 0)
|
|
{
|
|
return (CSizeComputer(nType, nVersion) << t).size();
|
|
}
|
|
|
|
template <typename S, typename T>
|
|
size_t GetSerializeSize(const S& s, const T& t)
|
|
{
|
|
return (CSizeComputer(s.GetType(), s.GetVersion()) << t).size();
|
|
}
|
|
|
|
#endif // BITCOIN_SERIALIZE_H
|