Effects: Constructs the end-of-sequence iterator.
regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
const regex_type& re,
int submatch = 0,
regex_constants::match_flag_type m =
regex_constants::match_default);
regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
const regex_type& re,
const std::vector<int>& submatches,
regex_constants::match_flag_type m =
regex_constants::match_default);
regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
const regex_type& re,
initializer_list<int> submatches,
regex_constants::match_flag_type m =
regex_constants::match_default);
template <std::size_t N>
regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
const regex_type& re,
const int (&submatches)[N],
regex_constants::match_flag_type m =
regex_constants::match_default);
Requires: Each of the initialization values of submatches shall be >= -1.
Effects: The first constructor initializes the member subs to hold the single value submatch. The second constructor initializes the member subs to hold a copy of the argument submatches. The third and fourth constructors initialize the member subs to hold a copy of the sequence of integer values pointed to by the iterator range [submatches.begin(),submatches.end()) and [&submatches,&submatches + N), respectively.
Each constructor then sets N to 0, and position to position_iterator(a, b, re, m). If position is not an end-of-sequence iterator the constructor sets result to the address of the current match. Otherwise if any of the values stored in subs is equal to -1 the constructor sets *this to a suffix iterator that points to the range [a,b), otherwise the constructor sets *this to an end-of-sequence iterator.