c++ - Errors Printing posix_time -


i having these weird compile errors when trying compile code.

outputhandler.h:

#pragma once  #include <fstream> #include <boost/thread/mutex.hpp>  #include "filenotaccessibleexception.hpp"  class outputhandler { public:     enum warninglevel {info, warning, error, crash};      outputhandler(std::string const& pathasstring) throw(filenotaccessibleexception);     void log(std::string const& message, warninglevel const& warninglevel);     void log(std::exception const& exception, warninglevel const& warninglevel);  private:     std::fstream file;     std::string path;     boost::mutex mutex;     static char const * const errorprefixes[]; };

outputhandler.cpp:

#include "outputhandler.h"  outputhandler::outputhandler(std::string const& pathasstring) throw(filenotaccessibleexception) : path(pathasstring) {     file.open(path, std::ios::app);     if(!file.is_open())         throw filenotaccessibleexception("could not open file: " + pathasstring, __file__, __line__);      /*         error: expected primary-expression before ‘(’ token         error: expected type-specifier     */     file.imbue(std::locale(file.getloc(), new boost::posix_time::time_facet("%d-%m-%y %h:%m:%s"))); }  void outputhandler::log(std::string const& message, warninglevel const& warninglevel) {     mutex.lock();     /*         error: cannot bind ‘std::basic_ostream<char>’ lvalue ‘std::basic_ostream<char>&&’     */     file << "[" << boost::posix_time::second_clock::universal_time() << "][" << errorprefixes[warninglevel] << "]: " + message << "\n";     file.flush();     mutex.unlock(); }  void outputhandler::log(std::exception const& exception, warninglevel const& warninglevel) {     log(exception.what(), warninglevel); }  char const * const outputhandler::errorprefixes[] = {"notice", "warning", "error", "crash"};

compile error:

outputhandler.cpp: in constructor ‘outputhandler::outputhandler(const string&)’: outputhandler.cpp:14:24: error: expected primary-expression before ‘(’ token   file.imbue(std::locale(file.getloc(), new boost::posix_time::time_facet("%d-%m-%y %h:%m:%s")));                         ^ outputhandler.cpp:14:44: error: expected type-specifier   file.imbue(std::locale(file.getloc(), new boost::posix_time::time_facet("%d-%m-%y %h:%m:%s")));                                             ^ outputhandler.cpp: in member function ‘void outputhandler::log(const string&, const outputhandler::warninglevel&)’: outputhandler.cpp:19:7: error: cannot bind ‘std::basic_ostream<char>’ lvalue ‘std::basic_ostream<char>&&’   file << "[" << boost::posix_time::second_clock::universal_time() << "][" << errorprefixes[warninglevel] << "]: " + message << "\n";        ^ in file included /usr/include/c++/4.8/istream:39:0,                  /usr/include/c++/4.8/fstream:38,                  outputhandler.h:8,                  outputhandler.cpp:7: /usr/include/c++/4.8/ostream:602:5: error:   initializing argument 1 of ‘std::basic_ostream<_chart, _traits>& std::operator<<(std::basic_ostream<_chart, _traits>&&, const _tp&) [with _chart = char; _traits = std::char_traits<char>; _tp = boost::posix_time::ptime]’      operator<<(basic_ostream<_chart, _traits>&& __os, const _tp& __x)      ^

the compiler error quite cryptic, think wants tell not know type boost::posix_time::time_facet.

try add following line cpp file:

#include <boost/date_time/posix_time/posix_time.hpp>

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