| @@ -32,4 +32,94 @@ | |||||
| // in the live-build engine. | // in the live-build engine. | ||||
| #define _Nullable | #define _Nullable | ||||
| #define _Nonnull | #define _Nonnull | ||||
| // In the 10.14 SDK these methods are defined in the <functional> header, which we don't compile | |||||
| // in the live-build engine, so we'll define them here | |||||
| #if defined (MAC_OS_X_VERSION_10_14) | |||||
| #include <memory> | |||||
| namespace std { inline namespace __1 { | |||||
| template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2> | |||||
| pair<_ForwardIterator1, _ForwardIterator1> _LIBCPP_CONSTEXPR_AFTER_CXX11 | |||||
| __search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, | |||||
| _ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred, | |||||
| forward_iterator_tag, forward_iterator_tag) | |||||
| { | |||||
| if (__first2 == __last2) | |||||
| return make_pair(__first1, __first1); // Everything matches an empty sequence | |||||
| while (true) | |||||
| { | |||||
| // Find first element in sequence 1 that matchs *__first2, with a mininum of loop checks | |||||
| while (true) | |||||
| { | |||||
| if (__first1 == __last1) // return __last1 if no element matches *__first2 | |||||
| return make_pair(__last1, __last1); | |||||
| if (__pred(*__first1, *__first2)) | |||||
| break; | |||||
| ++__first1; | |||||
| } | |||||
| // *__first1 matches *__first2, now match elements after here | |||||
| _ForwardIterator1 __m1 = __first1; | |||||
| _ForwardIterator2 __m2 = __first2; | |||||
| while (true) | |||||
| { | |||||
| if (++__m2 == __last2) // If pattern exhausted, __first1 is the answer (works for 1 element pattern) | |||||
| return make_pair(__first1, __m1); | |||||
| if (++__m1 == __last1) // Otherwise if source exhaused, pattern not found | |||||
| return make_pair(__last1, __last1); | |||||
| if (!__pred(*__m1, *__m2)) // if there is a mismatch, restart with a new __first1 | |||||
| { | |||||
| ++__first1; | |||||
| break; | |||||
| } // else there is a match, check next elements | |||||
| } | |||||
| } | |||||
| } | |||||
| template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2> | |||||
| _LIBCPP_CONSTEXPR_AFTER_CXX11 | |||||
| pair<_RandomAccessIterator1, _RandomAccessIterator1> | |||||
| __search(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, | |||||
| _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred, | |||||
| random_access_iterator_tag, random_access_iterator_tag) | |||||
| { | |||||
| typedef typename iterator_traits<_RandomAccessIterator1>::difference_type _D1; | |||||
| typedef typename iterator_traits<_RandomAccessIterator2>::difference_type _D2; | |||||
| // Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern | |||||
| const _D2 __len2 = __last2 - __first2; | |||||
| if (__len2 == 0) | |||||
| return make_pair(__first1, __first1); | |||||
| const _D1 __len1 = __last1 - __first1; | |||||
| if (__len1 < __len2) | |||||
| return make_pair(__last1, __last1); | |||||
| const _RandomAccessIterator1 __s = __last1 - (__len2 - 1); // Start of pattern match can't go beyond here | |||||
| while (true) | |||||
| { | |||||
| while (true) | |||||
| { | |||||
| if (__first1 == __s) | |||||
| return make_pair(__last1, __last1); | |||||
| if (__pred(*__first1, *__first2)) | |||||
| break; | |||||
| ++__first1; | |||||
| } | |||||
| _RandomAccessIterator1 __m1 = __first1; | |||||
| _RandomAccessIterator2 __m2 = __first2; | |||||
| while (true) | |||||
| { | |||||
| if (++__m2 == __last2) | |||||
| return make_pair(__first1, __first1 + __len2); | |||||
| ++__m1; // no need to check range on __m1 because __s guarantees we have enough source | |||||
| if (!__pred(*__m1, *__m2)) | |||||
| { | |||||
| ++__first1; | |||||
| break; | |||||
| } | |||||
| } | |||||
| } | |||||
| } | |||||
| } } | |||||
| #endif | |||||
| #endif | #endif | ||||