1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2012 The Bitcoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
5 #ifndef BITCOIN_SERIALIZE_H
6 #define BITCOIN_SERIALIZE_H
17 #include <boost/type_traits/is_fundamental.hpp>
18 #include <boost/tuple/tuple.hpp>
19 #include <boost/tuple/tuple_comparison.hpp>
20 #include <boost/tuple/tuple_io.hpp>
22 #include "allocators.h"
25 typedef long long int64;
26 typedef unsigned long long uint64;
31 static const unsigned int MAX_SIZE = 0x02000000;
33 // Used to bypass the rule against non-const reference to temporary
34 // where it makes sense with wrappers such as CFlatData or CTxDB
36 inline T& REF(const T& val)
38 return const_cast<T&>(val);
41 /////////////////////////////////////////////////////////////////
43 // Templates for serializing to anything that looks like a stream,
44 // i.e. anything that supports .read(char*, int) and .write(char*, int)
50 SER_NETWORK = (1 << 0),
52 SER_GETHASH = (1 << 2),
55 SER_SKIPSIG = (1 << 16),
56 SER_BLOCKHEADERONLY = (1 << 17),
59 #define IMPLEMENT_SERIALIZE(statements) \
60 unsigned int GetSerializeSize(int nType, int nVersion) const \
62 CSerActionGetSerializeSize ser_action; \
63 const bool fGetSize = true; \
64 const bool fWrite = false; \
65 const bool fRead = false; \
66 unsigned int nSerSize = 0; \
67 ser_streamplaceholder s; \
68 assert(fGetSize||fWrite||fRead); /* suppress warning */ \
70 s.nVersion = nVersion; \
74 template<typename Stream> \
75 void Serialize(Stream& s, int nType, int nVersion) const \
77 CSerActionSerialize ser_action; \
78 const bool fGetSize = false; \
79 const bool fWrite = true; \
80 const bool fRead = false; \
81 unsigned int nSerSize = 0; \
82 assert(fGetSize||fWrite||fRead); /* suppress warning */ \
85 template<typename Stream> \
86 void Unserialize(Stream& s, int nType, int nVersion) \
88 CSerActionUnserialize ser_action; \
89 const bool fGetSize = false; \
90 const bool fWrite = false; \
91 const bool fRead = true; \
92 unsigned int nSerSize = 0; \
93 assert(fGetSize||fWrite||fRead); /* suppress warning */ \
97 #define READWRITE(obj) (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
107 #define WRITEDATA(s, obj) s.write((char*)&(obj), sizeof(obj))
108 #define READDATA(s, obj) s.read((char*)&(obj), sizeof(obj))
110 inline unsigned int GetSerializeSize(char a, int, int=0) { return sizeof(a); }
111 inline unsigned int GetSerializeSize(signed char a, int, int=0) { return sizeof(a); }
112 inline unsigned int GetSerializeSize(unsigned char a, int, int=0) { return sizeof(a); }
113 inline unsigned int GetSerializeSize(signed short a, int, int=0) { return sizeof(a); }
114 inline unsigned int GetSerializeSize(unsigned short a, int, int=0) { return sizeof(a); }
115 inline unsigned int GetSerializeSize(signed int a, int, int=0) { return sizeof(a); }
116 inline unsigned int GetSerializeSize(unsigned int a, int, int=0) { return sizeof(a); }
117 inline unsigned int GetSerializeSize(signed long a, int, int=0) { return sizeof(a); }
118 inline unsigned int GetSerializeSize(unsigned long a, int, int=0) { return sizeof(a); }
119 inline unsigned int GetSerializeSize(int64 a, int, int=0) { return sizeof(a); }
120 inline unsigned int GetSerializeSize(uint64 a, int, int=0) { return sizeof(a); }
121 inline unsigned int GetSerializeSize(float a, int, int=0) { return sizeof(a); }
122 inline unsigned int GetSerializeSize(double a, int, int=0) { return sizeof(a); }
124 template<typename Stream> inline void Serialize(Stream& s, char a, int, int=0) { WRITEDATA(s, a); }
125 template<typename Stream> inline void Serialize(Stream& s, signed char a, int, int=0) { WRITEDATA(s, a); }
126 template<typename Stream> inline void Serialize(Stream& s, unsigned char a, int, int=0) { WRITEDATA(s, a); }
127 template<typename Stream> inline void Serialize(Stream& s, signed short a, int, int=0) { WRITEDATA(s, a); }
128 template<typename Stream> inline void Serialize(Stream& s, unsigned short a, int, int=0) { WRITEDATA(s, a); }
129 template<typename Stream> inline void Serialize(Stream& s, signed int a, int, int=0) { WRITEDATA(s, a); }
130 template<typename Stream> inline void Serialize(Stream& s, unsigned int a, int, int=0) { WRITEDATA(s, a); }
131 template<typename Stream> inline void Serialize(Stream& s, signed long a, int, int=0) { WRITEDATA(s, a); }
132 template<typename Stream> inline void Serialize(Stream& s, unsigned long a, int, int=0) { WRITEDATA(s, a); }
133 template<typename Stream> inline void Serialize(Stream& s, int64 a, int, int=0) { WRITEDATA(s, a); }
134 template<typename Stream> inline void Serialize(Stream& s, uint64 a, int, int=0) { WRITEDATA(s, a); }
135 template<typename Stream> inline void Serialize(Stream& s, float a, int, int=0) { WRITEDATA(s, a); }
136 template<typename Stream> inline void Serialize(Stream& s, double a, int, int=0) { WRITEDATA(s, a); }
138 template<typename Stream> inline void Unserialize(Stream& s, char& a, int, int=0) { READDATA(s, a); }
139 template<typename Stream> inline void Unserialize(Stream& s, signed char& a, int, int=0) { READDATA(s, a); }
140 template<typename Stream> inline void Unserialize(Stream& s, unsigned char& a, int, int=0) { READDATA(s, a); }
141 template<typename Stream> inline void Unserialize(Stream& s, signed short& a, int, int=0) { READDATA(s, a); }
142 template<typename Stream> inline void Unserialize(Stream& s, unsigned short& a, int, int=0) { READDATA(s, a); }
143 template<typename Stream> inline void Unserialize(Stream& s, signed int& a, int, int=0) { READDATA(s, a); }
144 template<typename Stream> inline void Unserialize(Stream& s, unsigned int& a, int, int=0) { READDATA(s, a); }
145 template<typename Stream> inline void Unserialize(Stream& s, signed long& a, int, int=0) { READDATA(s, a); }
146 template<typename Stream> inline void Unserialize(Stream& s, unsigned long& a, int, int=0) { READDATA(s, a); }
147 template<typename Stream> inline void Unserialize(Stream& s, int64& a, int, int=0) { READDATA(s, a); }
148 template<typename Stream> inline void Unserialize(Stream& s, uint64& a, int, int=0) { READDATA(s, a); }
149 template<typename Stream> inline void Unserialize(Stream& s, float& a, int, int=0) { READDATA(s, a); }
150 template<typename Stream> inline void Unserialize(Stream& s, double& a, int, int=0) { READDATA(s, a); }
152 inline unsigned int GetSerializeSize(bool a, int, int=0) { return sizeof(char); }
153 template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0) { char f=a; WRITEDATA(s, f); }
154 template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f; READDATA(s, f); a=f; }
163 // size < 253 -- 1 byte
164 // size <= USHRT_MAX -- 3 bytes (253 + 2 bytes)
165 // size <= UINT_MAX -- 5 bytes (254 + 4 bytes)
166 // size > UINT_MAX -- 9 bytes (255 + 8 bytes)
168 inline unsigned int GetSizeOfCompactSize(uint64 nSize)
170 if (nSize < 253) return sizeof(unsigned char);
171 else if (nSize <= std::numeric_limits<unsigned short>::max()) return sizeof(unsigned char) + sizeof(unsigned short);
172 else if (nSize <= std::numeric_limits<unsigned int>::max()) return sizeof(unsigned char) + sizeof(unsigned int);
173 else return sizeof(unsigned char) + sizeof(uint64);
176 template<typename Stream>
177 void WriteCompactSize(Stream& os, uint64 nSize)
181 unsigned char chSize = nSize;
182 WRITEDATA(os, chSize);
184 else if (nSize <= std::numeric_limits<unsigned short>::max())
186 unsigned char chSize = 253;
187 unsigned short xSize = nSize;
188 WRITEDATA(os, chSize);
189 WRITEDATA(os, xSize);
191 else if (nSize <= std::numeric_limits<unsigned int>::max())
193 unsigned char chSize = 254;
194 unsigned int xSize = nSize;
195 WRITEDATA(os, chSize);
196 WRITEDATA(os, xSize);
200 unsigned char chSize = 255;
201 uint64 xSize = nSize;
202 WRITEDATA(os, chSize);
203 WRITEDATA(os, xSize);
208 template<typename Stream>
209 uint64 ReadCompactSize(Stream& is)
211 unsigned char chSize;
212 READDATA(is, chSize);
218 else if (chSize == 253)
220 unsigned short xSize;
224 else if (chSize == 254)
236 if (nSizeRet > (uint64)MAX_SIZE)
237 throw std::ios_base::failure("ReadCompactSize() : size too large");
243 #define FLATDATA(obj) REF(CFlatData((char*)&(obj), (char*)&(obj) + sizeof(obj)))
245 /** Wrapper for serializing arrays and POD.
246 * There's a clever template way to make arrays serialize normally, but MSVC6 doesn't support it.
254 CFlatData(void* pbeginIn, void* pendIn) : pbegin((char*)pbeginIn), pend((char*)pendIn) { }
255 char* begin() { return pbegin; }
256 const char* begin() const { return pbegin; }
257 char* end() { return pend; }
258 const char* end() const { return pend; }
260 unsigned int GetSerializeSize(int, int=0) const
262 return pend - pbegin;
265 template<typename Stream>
266 void Serialize(Stream& s, int, int=0) const
268 s.write(pbegin, pend - pbegin);
271 template<typename Stream>
272 void Unserialize(Stream& s, int, int=0)
274 s.read(pbegin, pend - pbegin);
279 // Forward declarations
283 template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int=0);
284 template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
285 template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
288 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
289 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
290 template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion);
291 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
292 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
293 template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion);
294 template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
295 template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
296 template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion);
298 // others derived from vector
299 extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion);
300 template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion);
301 template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion);
304 template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion);
305 template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion);
306 template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion);
309 template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
310 template<typename Stream, typename T0, typename T1, typename T2> void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
311 template<typename Stream, typename T0, typename T1, typename T2> void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion);
314 template<typename T0, typename T1, typename T2, typename T3> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
315 template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
316 template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion);
319 template<typename K, typename T, typename Pred, typename A> unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion);
320 template<typename Stream, typename K, typename T, typename Pred, typename A> void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion);
321 template<typename Stream, typename K, typename T, typename Pred, typename A> void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion);
324 template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion);
325 template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion);
326 template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion);
333 // If none of the specialized versions above matched, default to calling member function.
334 // "int nType" is changed to "long nType" to keep from getting an ambiguous overload error.
335 // The compiler will only cast int to long if none of the other templates matched.
336 // Thanks to Boost serialization for this idea.
339 inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion)
341 return a.GetSerializeSize((int)nType, nVersion);
344 template<typename Stream, typename T>
345 inline void Serialize(Stream& os, const T& a, long nType, int nVersion)
347 a.Serialize(os, (int)nType, nVersion);
350 template<typename Stream, typename T>
351 inline void Unserialize(Stream& is, T& a, long nType, int nVersion)
353 a.Unserialize(is, (int)nType, nVersion);
364 unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int)
366 return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
369 template<typename Stream, typename C>
370 void Serialize(Stream& os, const std::basic_string<C>& str, int, int)
372 WriteCompactSize(os, str.size());
374 os.write((char*)&str[0], str.size() * sizeof(str[0]));
377 template<typename Stream, typename C>
378 void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
380 unsigned int nSize = ReadCompactSize(is);
383 is.read((char*)&str[0], nSize * sizeof(str[0]));
391 template<typename T, typename A>
392 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
394 return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
397 template<typename T, typename A>
398 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
400 unsigned int nSize = GetSizeOfCompactSize(v.size());
401 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
402 nSize += GetSerializeSize((*vi), nType, nVersion);
406 template<typename T, typename A>
407 inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
409 return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
413 template<typename Stream, typename T, typename A>
414 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
416 WriteCompactSize(os, v.size());
418 os.write((char*)&v[0], v.size() * sizeof(T));
421 template<typename Stream, typename T, typename A>
422 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
424 WriteCompactSize(os, v.size());
425 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
426 ::Serialize(os, (*vi), nType, nVersion);
429 template<typename Stream, typename T, typename A>
430 inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
432 Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
436 template<typename Stream, typename T, typename A>
437 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
439 // Limit size per read so bogus size value won't cause out of memory
441 unsigned int nSize = ReadCompactSize(is);
445 unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
447 is.read((char*)&v[i], blk * sizeof(T));
452 template<typename Stream, typename T, typename A>
453 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
456 unsigned int nSize = ReadCompactSize(is);
458 unsigned int nMid = 0;
461 nMid += 5000000 / sizeof(T);
465 for (; i < nMid; i++)
466 Unserialize(is, v[i], nType, nVersion);
470 template<typename Stream, typename T, typename A>
471 inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
473 Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
479 // others derived from vector
481 inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
483 return GetSerializeSize((const std::vector<unsigned char>&)v, nType, nVersion);
486 template<typename Stream>
487 void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
489 Serialize(os, (const std::vector<unsigned char>&)v, nType, nVersion);
492 template<typename Stream>
493 void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
495 Unserialize(is, (std::vector<unsigned char>&)v, nType, nVersion);
503 template<typename K, typename T>
504 unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
506 return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
509 template<typename Stream, typename K, typename T>
510 void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
512 Serialize(os, item.first, nType, nVersion);
513 Serialize(os, item.second, nType, nVersion);
516 template<typename Stream, typename K, typename T>
517 void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
519 Unserialize(is, item.first, nType, nVersion);
520 Unserialize(is, item.second, nType, nVersion);
528 template<typename T0, typename T1, typename T2>
529 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
531 unsigned int nSize = 0;
532 nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
533 nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
534 nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
538 template<typename Stream, typename T0, typename T1, typename T2>
539 void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
541 Serialize(os, boost::get<0>(item), nType, nVersion);
542 Serialize(os, boost::get<1>(item), nType, nVersion);
543 Serialize(os, boost::get<2>(item), nType, nVersion);
546 template<typename Stream, typename T0, typename T1, typename T2>
547 void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
549 Unserialize(is, boost::get<0>(item), nType, nVersion);
550 Unserialize(is, boost::get<1>(item), nType, nVersion);
551 Unserialize(is, boost::get<2>(item), nType, nVersion);
559 template<typename T0, typename T1, typename T2, typename T3>
560 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
562 unsigned int nSize = 0;
563 nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
564 nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
565 nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
566 nSize += GetSerializeSize(boost::get<3>(item), nType, nVersion);
570 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
571 void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
573 Serialize(os, boost::get<0>(item), nType, nVersion);
574 Serialize(os, boost::get<1>(item), nType, nVersion);
575 Serialize(os, boost::get<2>(item), nType, nVersion);
576 Serialize(os, boost::get<3>(item), nType, nVersion);
579 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
580 void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
582 Unserialize(is, boost::get<0>(item), nType, nVersion);
583 Unserialize(is, boost::get<1>(item), nType, nVersion);
584 Unserialize(is, boost::get<2>(item), nType, nVersion);
585 Unserialize(is, boost::get<3>(item), nType, nVersion);
593 template<typename K, typename T, typename Pred, typename A>
594 unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
596 unsigned int nSize = GetSizeOfCompactSize(m.size());
597 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
598 nSize += GetSerializeSize((*mi), nType, nVersion);
602 template<typename Stream, typename K, typename T, typename Pred, typename A>
603 void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
605 WriteCompactSize(os, m.size());
606 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
607 Serialize(os, (*mi), nType, nVersion);
610 template<typename Stream, typename K, typename T, typename Pred, typename A>
611 void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion)
614 unsigned int nSize = ReadCompactSize(is);
615 typename std::map<K, T, Pred, A>::iterator mi = m.begin();
616 for (unsigned int i = 0; i < nSize; i++)
618 std::pair<K, T> item;
619 Unserialize(is, item, nType, nVersion);
620 mi = m.insert(mi, item);
629 template<typename K, typename Pred, typename A>
630 unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
632 unsigned int nSize = GetSizeOfCompactSize(m.size());
633 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
634 nSize += GetSerializeSize((*it), nType, nVersion);
638 template<typename Stream, typename K, typename Pred, typename A>
639 void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
641 WriteCompactSize(os, m.size());
642 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
643 Serialize(os, (*it), nType, nVersion);
646 template<typename Stream, typename K, typename Pred, typename A>
647 void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion)
650 unsigned int nSize = ReadCompactSize(is);
651 typename std::set<K, Pred, A>::iterator it = m.begin();
652 for (unsigned int i = 0; i < nSize; i++)
655 Unserialize(is, key, nType, nVersion);
656 it = m.insert(it, key);
663 // Support for IMPLEMENT_SERIALIZE and READWRITE macro
665 class CSerActionGetSerializeSize { };
666 class CSerActionSerialize { };
667 class CSerActionUnserialize { };
669 template<typename Stream, typename T>
670 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionGetSerializeSize ser_action)
672 return ::GetSerializeSize(obj, nType, nVersion);
675 template<typename Stream, typename T>
676 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionSerialize ser_action)
678 ::Serialize(s, obj, nType, nVersion);
682 template<typename Stream, typename T>
683 inline unsigned int SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionUnserialize ser_action)
685 ::Unserialize(s, obj, nType, nVersion);
689 struct ser_streamplaceholder
706 /** Double ended buffer combining vector and stream-like interfaces.
708 * >> and << read and write unformatted data using the above serialization templates.
709 * Fills with data in linear time; some stringstream implementations take N^2 time.
714 typedef std::vector<char, zero_after_free_allocator<char> > vector_type;
716 unsigned int nReadPos;
723 typedef vector_type::allocator_type allocator_type;
724 typedef vector_type::size_type size_type;
725 typedef vector_type::difference_type difference_type;
726 typedef vector_type::reference reference;
727 typedef vector_type::const_reference const_reference;
728 typedef vector_type::value_type value_type;
729 typedef vector_type::iterator iterator;
730 typedef vector_type::const_iterator const_iterator;
731 typedef vector_type::reverse_iterator reverse_iterator;
733 explicit CDataStream(int nTypeIn, int nVersionIn)
735 Init(nTypeIn, nVersionIn);
738 CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend)
740 Init(nTypeIn, nVersionIn);
743 #if !defined(_MSC_VER) || _MSC_VER >= 1300
744 CDataStream(const char* pbegin, const char* pend, int nTypeIn, int nVersionIn) : vch(pbegin, pend)
746 Init(nTypeIn, nVersionIn);
750 CDataStream(const vector_type& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
752 Init(nTypeIn, nVersionIn);
755 CDataStream(const std::vector<char>& vchIn, int nTypeIn, int nVersionIn) : vch(vchIn.begin(), vchIn.end())
757 Init(nTypeIn, nVersionIn);
760 CDataStream(const std::vector<unsigned char>& vchIn, int nTypeIn, int nVersionIn) : vch((char*)&vchIn.begin()[0], (char*)&vchIn.end()[0])
762 Init(nTypeIn, nVersionIn);
765 void Init(int nTypeIn, int nVersionIn)
769 nVersion = nVersionIn;
771 exceptmask = std::ios::badbit | std::ios::failbit;
774 CDataStream& operator+=(const CDataStream& b)
776 vch.insert(vch.end(), b.begin(), b.end());
780 friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
787 std::string str() const
789 return (std::string(begin(), end()));
796 const_iterator begin() const { return vch.begin() + nReadPos; }
797 iterator begin() { return vch.begin() + nReadPos; }
798 const_iterator end() const { return vch.end(); }
799 iterator end() { return vch.end(); }
800 size_type size() const { return vch.size() - nReadPos; }
801 bool empty() const { return vch.size() == nReadPos; }
802 void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); }
803 void reserve(size_type n) { vch.reserve(n + nReadPos); }
804 const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; }
805 reference operator[](size_type pos) { return vch[pos + nReadPos]; }
806 void clear() { vch.clear(); nReadPos = 0; }
807 iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
808 void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
810 void insert(iterator it, const_iterator first, const_iterator last)
812 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
814 // special case for inserting at the front when there's room
815 nReadPos -= (last - first);
816 memcpy(&vch[nReadPos], &first[0], last - first);
819 vch.insert(it, first, last);
822 void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
824 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
826 // special case for inserting at the front when there's room
827 nReadPos -= (last - first);
828 memcpy(&vch[nReadPos], &first[0], last - first);
831 vch.insert(it, first, last);
834 #if !defined(_MSC_VER) || _MSC_VER >= 1300
835 void insert(iterator it, const char* first, const char* last)
837 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
839 // special case for inserting at the front when there's room
840 nReadPos -= (last - first);
841 memcpy(&vch[nReadPos], &first[0], last - first);
844 vch.insert(it, first, last);
848 iterator erase(iterator it)
850 if (it == vch.begin() + nReadPos)
852 // special case for erasing from the front
853 if (++nReadPos >= vch.size())
855 // whenever we reach the end, we take the opportunity to clear the buffer
857 return vch.erase(vch.begin(), vch.end());
859 return vch.begin() + nReadPos;
862 return vch.erase(it);
865 iterator erase(iterator first, iterator last)
867 if (first == vch.begin() + nReadPos)
869 // special case for erasing from the front
870 if (last == vch.end())
873 return vch.erase(vch.begin(), vch.end());
877 nReadPos = (last - vch.begin());
882 return vch.erase(first, last);
885 inline void Compact()
887 vch.erase(vch.begin(), vch.begin() + nReadPos);
891 bool Rewind(size_type n)
893 // Rewind by n characters if the buffer hasn't been compacted yet
904 void setstate(short bits, const char* psz)
907 if (state & exceptmask)
908 throw std::ios_base::failure(psz);
911 bool eof() const { return size() == 0; }
912 bool fail() const { return state & (std::ios::badbit | std::ios::failbit); }
913 bool good() const { return !eof() && (state == 0); }
914 void clear(short n) { state = n; } // name conflict with vector clear()
915 short exceptions() { return exceptmask; }
916 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CDataStream"); return prev; }
917 CDataStream* rdbuf() { return this; }
918 int in_avail() { return size(); }
920 void SetType(int n) { nType = n; }
921 int GetType() { return nType; }
922 void SetVersion(int n) { nVersion = n; }
923 int GetVersion() { return nVersion; }
924 void ReadVersion() { *this >> nVersion; }
925 void WriteVersion() { *this << nVersion; }
927 CDataStream& read(char* pch, int nSize)
929 // Read from the beginning of the buffer
931 unsigned int nReadPosNext = nReadPos + nSize;
932 if (nReadPosNext >= vch.size())
934 if (nReadPosNext > vch.size())
936 setstate(std::ios::failbit, "CDataStream::read() : end of data");
937 memset(pch, 0, nSize);
938 nSize = vch.size() - nReadPos;
940 memcpy(pch, &vch[nReadPos], nSize);
945 memcpy(pch, &vch[nReadPos], nSize);
946 nReadPos = nReadPosNext;
950 CDataStream& ignore(int nSize)
952 // Ignore from the beginning of the buffer
954 unsigned int nReadPosNext = nReadPos + nSize;
955 if (nReadPosNext >= vch.size())
957 if (nReadPosNext > vch.size())
959 setstate(std::ios::failbit, "CDataStream::ignore() : end of data");
960 nSize = vch.size() - nReadPos;
966 nReadPos = nReadPosNext;
970 CDataStream& write(const char* pch, int nSize)
972 // Write to the end of the buffer
974 vch.insert(vch.end(), pch, pch + nSize);
978 template<typename Stream>
979 void Serialize(Stream& s, int nType, int nVersion) const
981 // Special case: stream << stream concatenates like stream += stream
983 s.write((char*)&vch[0], vch.size() * sizeof(vch[0]));
987 unsigned int GetSerializeSize(const T& obj)
989 // Tells the size of the object if serialized to this stream
990 return ::GetSerializeSize(obj, nType, nVersion);
994 CDataStream& operator<<(const T& obj)
996 // Serialize to this stream
997 ::Serialize(*this, obj, nType, nVersion);
1001 template<typename T>
1002 CDataStream& operator>>(T& obj)
1004 // Unserialize from this stream
1005 ::Unserialize(*this, obj, nType, nVersion);
1010 #ifdef TESTCDATASTREAM
1017 // n=16000 0 seconds
1018 // n=32000 0 seconds
1019 // n=64000 1 seconds
1020 // n=128000 1 seconds
1021 // n=256000 2 seconds
1022 // n=512000 4 seconds
1023 // n=1024000 8 seconds
1024 // n=2048000 16 seconds
1025 // n=4096000 32 seconds
1029 // n=4000 13 seconds
1030 // n=8000 87 seconds
1031 // n=16000 400 seconds
1032 // n=32000 1660 seconds
1033 // n=64000 6749 seconds
1034 // n=128000 27241 seconds
1035 // n=256000 109804 seconds
1037 int main(int argc, char *argv[])
1039 vector<unsigned char> vch(0xcc, 250);
1040 printf("CDataStream:\n");
1041 for (int n = 1000; n <= 4500000; n *= 2)
1044 time_t nStart = time(NULL);
1045 for (int i = 0; i < n; i++)
1046 ss.write((char*)&vch[0], vch.size());
1047 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
1049 printf("stringstream:\n");
1050 for (int n = 1000; n <= 4500000; n *= 2)
1053 time_t nStart = time(NULL);
1054 for (int i = 0; i < n; i++)
1055 ss.write((char*)&vch[0], vch.size());
1056 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
1070 /** RAII wrapper for FILE*.
1072 * Will automatically close the file when it goes out of scope if not null.
1073 * If you're returning the file pointer, return file.release().
1074 * If you need to close the file early, use file.fclose() instead of fclose(file).
1086 typedef FILE element_type;
1088 CAutoFile(FILE* filenew, int nTypeIn, int nVersionIn)
1092 nVersion = nVersionIn;
1094 exceptmask = std::ios::badbit | std::ios::failbit;
1104 if (file != NULL && file != stdin && file != stdout && file != stderr)
1109 FILE* release() { FILE* ret = file; file = NULL; return ret; }
1110 operator FILE*() { return file; }
1111 FILE* operator->() { return file; }
1112 FILE& operator*() { return *file; }
1113 FILE** operator&() { return &file; }
1114 FILE* operator=(FILE* pnew) { return file = pnew; }
1115 bool operator!() { return (file == NULL); }
1121 void setstate(short bits, const char* psz)
1124 if (state & exceptmask)
1125 throw std::ios_base::failure(psz);
1128 bool fail() const { return state & (std::ios::badbit | std::ios::failbit); }
1129 bool good() const { return state == 0; }
1130 void clear(short n = 0) { state = n; }
1131 short exceptions() { return exceptmask; }
1132 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CAutoFile"); return prev; }
1134 void SetType(int n) { nType = n; }
1135 int GetType() { return nType; }
1136 void SetVersion(int n) { nVersion = n; }
1137 int GetVersion() { return nVersion; }
1138 void ReadVersion() { *this >> nVersion; }
1139 void WriteVersion() { *this << nVersion; }
1141 CAutoFile& read(char* pch, size_t nSize)
1144 throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
1145 if (fread(pch, 1, nSize, file) != nSize)
1146 setstate(std::ios::failbit, feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
1150 CAutoFile& write(const char* pch, size_t nSize)
1153 throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
1154 if (fwrite(pch, 1, nSize, file) != nSize)
1155 setstate(std::ios::failbit, "CAutoFile::write : write failed");
1159 template<typename T>
1160 unsigned int GetSerializeSize(const T& obj)
1162 // Tells the size of the object if serialized to this stream
1163 return ::GetSerializeSize(obj, nType, nVersion);
1166 template<typename T>
1167 CAutoFile& operator<<(const T& obj)
1169 // Serialize to this stream
1171 throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
1172 ::Serialize(*this, obj, nType, nVersion);
1176 template<typename T>
1177 CAutoFile& operator>>(T& obj)
1179 // Unserialize from this stream
1181 throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL");
1182 ::Unserialize(*this, obj, nType, nVersion);