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openmonero/ext/infix_iterator.h

58 lines
1.3 KiB

//
// Created by mwo on 24/05/15.
//
// source: http://codereview.stackexchange.com/questions/13176/infix-iterator-code
// infix_iterator.h
#if !defined(INFIX_ITERATOR_H_)
#define INFIX_ITERATOR_H_
#include <ostream>
#include <iterator>
#include <string>
template <class T, class charT=char, class traits=std::char_traits<charT> >
class infix_ostream_iterator :
public std::iterator<std::output_iterator_tag, void, void, void, void>
{
std::basic_ostream<charT,traits> *os;
std::basic_string<charT> delimiter;
std::basic_string<charT> real_delim;
public:
typedef charT char_type;
typedef traits traits_type;
typedef std::basic_ostream<charT, traits> ostream_type;
infix_ostream_iterator(ostream_type &s)
: os(&s)
{}
infix_ostream_iterator(ostream_type &s, charT const *d)
: os(&s),
real_delim(d)
{}
infix_ostream_iterator<T, charT, traits> &operator=(T const &item)
{
*os << delimiter << item;
delimiter = real_delim;
return *this;
}
infix_ostream_iterator<T, charT, traits> &operator*() {
return *this;
}
infix_ostream_iterator<T, charT, traits> &operator++() {
return *this;
}
infix_ostream_iterator<T, charT, traits> &operator++(int) {
return *this;
}
};
#endif