mirror of https://github.com/PrimeDecomp/prime.git
31 lines
769 B
C++
31 lines
769 B
C++
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#ifndef _RSTL_ITERATOR
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#define _RSTL_ITERATOR
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namespace rstl {
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struct input_iterator_tag {};
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struct output_iterator_tag {};
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struct forward_iterator_tag : public input_iterator_tag {};
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struct bidirectional_iterator_tag : public forward_iterator_tag {};
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struct random_access_iterator_tag : public bidirectional_iterator_tag {};
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template < typename It >
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typename It::difference_type __distance(It first, It last, forward_iterator_tag) {
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typename It::difference_type result = 0;
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It it = first;
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while (it != last) {
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++result;
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++it;
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}
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return result;
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}
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template < typename It >
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typename It::difference_type distance(It first, It last) {
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return __distance(first, last, typename It::iterator_category());
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}
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} // namespace rstl
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#endif // _RSTL_ITERATOR
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