代码如下
#pragma once

#include <cstdlib>
#include <memory>
#include <iostream>
#include <sstream>
#include <boost/utility.hpp>

#include “stringdata.h”

namespace bson {

using std::string;
using std::stringstream;

class assertion : public std::exception {
public:
assertion( unsigned u , const string& s )
: id( u ) , msg( s ) {
stringstream ss;
ss << “BsonAssertion id: ” << u << ” ” << s;
full = ss.str();
}

virtual ~assertion() throw() {}

virtual const char* what() const throw() { return full.c_str(); }

unsigned id;
string msg;
string full;
};

#if !defined(assert)
inline void assert(bool expr) {
if(!expr) {
throw bson::assertion( 0 , “assertion failure in bson library” );
}
}
#endif
#if !defined(uassert)
inline void uasserted(unsigned msgid, std::string s) {
throw bson::assertion( msgid , s );
}

inline void uassert(unsigned msgid, std::string msg, bool expr) {
if( !expr )
uasserted( msgid , msg );
}
inline void msgasserted(int msgid, const char *msg) {
throw bson::assertion( msgid , msg );
}
inline void msgasserted(int msgid, const std::string &msg) { msgasserted(msgid, msg.c_str()); }
inline void massert(unsigned msgid, std::string msg, bool expr) {
if(!expr) {
std::cout << “assertion failure in bson library: ” << msgid << “” “” << msg << std::endl;
throw bson::assertion( msgid , msg );
}
}
#endif
}