30 Regular expressions library [re]

30.11 Regular expression iterators [re.iter]

30.11.2 Class template regex_­token_­iterator [re.tokiter]

30.11.2.2 Constructors [re.tokiter.cnstr]

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regex_token_iterator();
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Effects: Constructs the end-of-sequence iterator.
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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 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<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);
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Preconditions: Each of the initialization values of submatches is >= -1.
3
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Effects: The first constructor initializes the member subs to hold the single value submatch.
The second, third, and fourth constructors initialize the member subs to hold a copy of the sequence of integer values pointed to by the iterator range [begin(submatches), end(submatches)).
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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.