iterator: add infix_iterator

This commit is contained in:
Danny Robson 2016-03-11 12:44:00 +11:00
parent 92be31d870
commit cd15371fcf

View File

@ -67,4 +67,45 @@ class referencing_iterator {
}; };
namespace util {
template <
typename T,
class CharT = char,
class Traits = std::char_traits<CharT>
>
class infix_iterator : public std::iterator<std::output_iterator_tag, void, void, void, void> {
public:
using char_type = CharT;
using traits_type = Traits;
using ostream_type = std::basic_ostream<char_type, traits_type>;
infix_iterator (ostream_type& _output, const CharT *_delimiter):
m_output (_output),
m_delimiter (_delimiter)
{ ; }
infix_iterator&
operator= (const T &value)
{
if (!m_first)
m_output << m_delimiter;
m_output << value;
m_first = false;
return *this;
}
infix_iterator& operator* (void) { return *this; }
infix_iterator& operator++ (void) { return *this; }
infix_iterator& operator++ (int) { return *this; }
private:
bool m_first = true;
ostream_type &m_output;
const CharT *m_delimiter;
};
}
#endif #endif