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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <iterator>
// template <class C> auto begin(C& c) -> decltype(c.begin());
// template <class C> auto begin(const C& c) -> decltype(c.begin());
// template <class C> auto end(C& c) -> decltype(c.end());
// template <class C> auto end(const C& c) -> decltype(c.end());
// template <class E> reverse_iterator<const E*> rbegin(initializer_list<E> il);
// template <class E> reverse_iterator<const E*> rend(initializer_list<E> il);
#include <__config>
#if __cplusplus >= 201103L
#include <iterator>
#include <cassert>
#include <vector>
#include <array>
#include <list>
#include <initializer_list>
template<typename C>
void test_const_container( const C & c, typename C::value_type val ) {
assert ( std::begin(c) == c.begin());
assert (*std::begin(c) == val );
assert ( std::begin(c) != c.end());
assert ( std::end(c) == c.end());
#if _LIBCPP_STD_VER > 11
assert ( std::cbegin(c) == c.cbegin());
assert ( std::cbegin(c) != c.cend());
assert ( std::cend(c) == c.cend());
assert ( std::rbegin(c) == c.rbegin());
assert ( std::rbegin(c) != c.rend());
assert ( std::rend(c) == c.rend());
assert ( std::crbegin(c) == c.crbegin());
assert ( std::crbegin(c) != c.crend());
assert ( std::crend(c) == c.crend());
#endif
}
template<typename T>
void test_const_container( const std::initializer_list<T> & c, T val ) {
assert ( std::begin(c) == c.begin());
assert (*std::begin(c) == val );
assert ( std::begin(c) != c.end());
assert ( std::end(c) == c.end());
#if _LIBCPP_STD_VER > 11
// initializer_list doesn't have cbegin/cend/rbegin/rend
// but std::cbegin(),etc work (b/c they're general fn templates)
// assert ( std::cbegin(c) == c.cbegin());
// assert ( std::cbegin(c) != c.cend());
// assert ( std::cend(c) == c.cend());
// assert ( std::rbegin(c) == c.rbegin());
// assert ( std::rbegin(c) != c.rend());
// assert ( std::rend(c) == c.rend());
// assert ( std::crbegin(c) == c.crbegin());
// assert ( std::crbegin(c) != c.crend());
// assert ( std::crend(c) == c.crend());
#endif
}
template<typename C>
void test_container( C & c, typename C::value_type val ) {
assert ( std::begin(c) == c.begin());
assert (*std::begin(c) == val );
assert ( std::begin(c) != c.end());
assert ( std::end(c) == c.end());
#if _LIBCPP_STD_VER > 11
assert ( std::cbegin(c) == c.cbegin());
assert ( std::cbegin(c) != c.cend());
assert ( std::cend(c) == c.cend());
assert ( std::rbegin(c) == c.rbegin());
assert ( std::rbegin(c) != c.rend());
assert ( std::rend(c) == c.rend());
assert ( std::crbegin(c) == c.crbegin());
assert ( std::crbegin(c) != c.crend());
assert ( std::crend(c) == c.crend());
#endif
}
template<typename T>
void test_container( std::initializer_list<T> & c, T val ) {
assert ( std::begin(c) == c.begin());
assert (*std::begin(c) == val );
assert ( std::begin(c) != c.end());
assert ( std::end(c) == c.end());
#if _LIBCPP_STD_VER > 11
// initializer_list doesn't have cbegin/cend/rbegin/rend
// assert ( std::cbegin(c) == c.cbegin());
// assert ( std::cbegin(c) != c.cend());
// assert ( std::cend(c) == c.cend());
// assert ( std::rbegin(c) == c.rbegin());
// assert ( std::rbegin(c) != c.rend());
// assert ( std::rend(c) == c.rend());
// assert ( std::crbegin(c) == c.crbegin());
// assert ( std::crbegin(c) != c.crend());
// assert ( std::crend(c) == c.crend());
#endif
}
template<typename T, size_t Sz>
void test_const_array( const T (&array)[Sz] ) {
assert ( std::begin(array) == array );
assert (*std::begin(array) == array[0] );
assert ( std::begin(array) != std::end(array));
assert ( std::end(array) == array + Sz);
#if _LIBCPP_STD_VER > 11
assert ( std::cbegin(array) == array );
assert (*std::cbegin(array) == array[0] );
assert ( std::cbegin(array) != std::cend(array));
assert ( std::cend(array) == array + Sz);
#endif
}
int main(){
std::vector<int> v; v.push_back(1);
std::list<int> l; l.push_back(2);
std::array<int, 1> a; a[0] = 3;
std::initializer_list<int> il = { 4 };
test_container ( v, 1 );
test_container ( l, 2 );
test_container ( a, 3 );
test_container ( il, 4 );
test_const_container ( v, 1 );
test_const_container ( l, 2 );
test_const_container ( a, 3 );
test_const_container ( il, 4 );
static constexpr int arrA [] { 1, 2, 3 };
test_const_array ( arrA );
#if _LIBCPP_STD_VER > 11
constexpr const int *b = std::cbegin(arrA);
constexpr const int *e = std::cend(arrA);
static_assert(e - b == 3, "");
#endif
}
#else
int main(){}
#endif
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