exception.h

#ifndef MTLD_EXCEPTION
#define MTLD_EXCEPTION

#if defined(__unix__)
#include <sys/param.h>
#endif
#include <exception>
#include <sstream>
#include <string>
#include <errno.h>

namespace Mobi { namespace Mtld {

// An extension of std::exception 

class Exception : public std::exception {
    std::stringstream stream;
    mutable std::string str;
public:
    std::ostream &out() { return stream; }
    const char *what() const throw() { str = stream.str(); return str.c_str(); }
    virtual ~Exception() throw() {}
    Exception(std::string info) { stream << info; }
    Exception() {}
    Exception(const Exception &rhs) : std::exception(rhs) {
        stream << rhs.what();
    }
};

template <typename T>
Exception &operator<<(Exception &e, const T &t) {
    e.out() << t;
    return e;
}

}}

#endif