T &operator*() const { return **this->I; }
};
+template <typename WrappedIteratorT>
+pointee_iterator<WrappedIteratorT> make_pointee_iterator(WrappedIteratorT &&I) {
+ return pointee_iterator<WrappedIteratorT>(std::forward<WrappedIteratorT>(I));
+}
+
template <typename WrappedIteratorT,
typename T = decltype(&*std::declval<WrappedIteratorT>())>
class pointer_iterator
const T &operator*() const { return Ptr = &*this->I; }
};
+template <typename WrappedIteratorT>
+pointer_iterator<WrappedIteratorT> make_pointer_iterator(WrappedIteratorT &&I) {
+ return pointer_iterator<WrappedIteratorT>(std::forward<WrappedIteratorT>(I));
}
+} // namespace llvm
+
#endif
V.push_back(&arr[2]);
V.push_back(&arr[3]);
- typedef pointee_iterator<SmallVectorImpl<int *>::const_iterator> test_iterator;
-
- test_iterator Begin, End;
- Begin = V.begin();
- End = test_iterator(V.end());
-
- test_iterator I = Begin;
+ auto Begin = make_pointee_iterator(V.begin());
+ auto End = make_pointee_iterator(V.end());
+ static_assert(
+ std::is_same<decltype(Begin),
+ pointee_iterator<SmallVectorImpl<int *>::iterator>>::value,
+ "Wrong type returned by make_pointee_iterator");
+
+ auto I = Begin;
for (int i = 0; i < 4; ++i) {
EXPECT_EQ(*V[i], *I);
EXPECT_EQ(I, Begin + i);
EXPECT_EQ(I, std::next(Begin, i));
- test_iterator J = Begin;
+ auto J = Begin;
J += i;
EXPECT_EQ(I, J);
EXPECT_EQ(*V[i], Begin[i]);
EXPECT_EQ(i, std::distance(Begin, I));
EXPECT_EQ(Begin, I - i);
- test_iterator K = I++;
+ auto K = I++;
EXPECT_EQ(K, std::prev(I));
}
EXPECT_EQ(End, I);
V.push_back(make_unique<int>(3));
V.push_back(make_unique<int>(4));
- typedef pointee_iterator<
- SmallVectorImpl<std::unique_ptr<int>>::const_iterator> test_iterator;
-
- test_iterator Begin, End;
- Begin = V.begin();
- End = test_iterator(V.end());
+ auto Begin = make_pointee_iterator(V.begin());
+ auto End = make_pointee_iterator(V.end());
+ static_assert(
+ std::is_same<decltype(Begin),
+ pointee_iterator<
+ SmallVectorImpl<std::unique_ptr<int>>::iterator>>::value,
+ "Wrong type returned by make_pointee_iterator");
- test_iterator I = Begin;
+ auto I = Begin;
for (int i = 0; i < 4; ++i) {
EXPECT_EQ(*V[i], *I);
EXPECT_EQ(I, Begin + i);
EXPECT_EQ(I, std::next(Begin, i));
- test_iterator J = Begin;
+ auto J = Begin;
J += i;
EXPECT_EQ(I, J);
EXPECT_EQ(*V[i], Begin[i]);
EXPECT_EQ(i, std::distance(Begin, I));
EXPECT_EQ(Begin, I - i);
- test_iterator K = I++;
+ auto K = I++;
EXPECT_EQ(K, std::prev(I));
}
EXPECT_EQ(End, I);
TEST(PointerIterator, Basic) {
int A[] = {1, 2, 3, 4};
- pointer_iterator<int *> Begin(std::begin(A)), End(std::end(A));
+ auto Begin = make_pointer_iterator(std::begin(A));
+ auto End = make_pointer_iterator(std::end(A));
+ static_assert(std::is_same<decltype(Begin), pointer_iterator<int *>>::value,
+ "Wrong type returned by make_pointer_iterator");
EXPECT_EQ(A, *Begin);
++Begin;
EXPECT_EQ(A + 1, *Begin);
TEST(PointerIterator, Const) {
int A[] = {1, 2, 3, 4};
- const pointer_iterator<int *> Begin(std::begin(A));
+ auto Begin = make_pointer_iterator(std::begin(A));
EXPECT_EQ(A, *Begin);
EXPECT_EQ(A + 1, std::next(*Begin, 1));
EXPECT_EQ(A + 2, std::next(*Begin, 2));