#define LLVM_ADT_STLEXTRAS_H
#include "llvm/Support/Compiler.h"
+#include <algorithm> // for std::all_of
#include <cassert>
#include <cstddef> // for std::size_t
#include <cstdlib> // for qsort
}
};
-template <class _Iterator, class Func>
-inline mapped_iterator<_Iterator, Func>
-operator+(typename mapped_iterator<_Iterator, Func>::difference_type N,
- const mapped_iterator<_Iterator, Func>& X) {
- return mapped_iterator<_Iterator, Func>(X.getCurrent() - N, X.getFunc());
+template <class Iterator, class Func>
+inline mapped_iterator<Iterator, Func>
+operator+(typename mapped_iterator<Iterator, Func>::difference_type N,
+ const mapped_iterator<Iterator, Func> &X) {
+ return mapped_iterator<Iterator, Func>(X.getCurrent() - N, X.getFunc());
}
return mapped_iterator<ItTy, FuncTy>(I, F);
}
+/// \brief Metafunction to determine if type T has a member called rbegin().
+template <typename T> struct has_rbegin {
+ template <typename U> static char(&f(const U &, decltype(&U::rbegin)))[1];
+ static char(&f(...))[2];
+ const static bool value = sizeof(f(std::declval<T>(), nullptr)) == 1;
+};
+
+// Returns an iterator_range over the given container which iterates in reverse.
+// Note that the container must have rbegin()/rend() methods for this to work.
+template <typename ContainerTy>
+auto reverse(ContainerTy &&C,
+ typename std::enable_if<has_rbegin<ContainerTy>::value>::type * =
+ nullptr) -> decltype(make_range(C.rbegin(), C.rend())) {
+ return make_range(C.rbegin(), C.rend());
+}
+
+// Returns a std::reverse_iterator wrapped around the given iterator.
+template <typename IteratorTy>
+std::reverse_iterator<IteratorTy> make_reverse_iterator(IteratorTy It) {
+ return std::reverse_iterator<IteratorTy>(It);
+}
+
+// Returns an iterator_range over the given container which iterates in reverse.
+// Note that the container must have begin()/end() methods which return
+// bidirectional iterators for this to work.
+template <typename ContainerTy>
+auto reverse(
+ ContainerTy &&C,
+ typename std::enable_if<!has_rbegin<ContainerTy>::value>::type * = nullptr)
+ -> decltype(make_range(llvm::make_reverse_iterator(std::end(C)),
+ llvm::make_reverse_iterator(std::begin(C)))) {
+ return make_range(llvm::make_reverse_iterator(std::end(C)),
+ llvm::make_reverse_iterator(std::begin(C)));
+}
+
//===----------------------------------------------------------------------===//
// Extra additions to <utility>
//===----------------------------------------------------------------------===//
C.clear();
}
+/// Provide wrappers to std::all_of which take ranges instead of having to pass
+/// being/end explicitly.
+template<typename R, class UnaryPredicate>
+bool all_of(R &&Range, UnaryPredicate &&P) {
+ return std::all_of(Range.begin(), Range.end(),
+ std::forward<UnaryPredicate>(P));
+}
+
//===----------------------------------------------------------------------===//
// Extra additions to <memory>
//===----------------------------------------------------------------------===//