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// { dg-do run { target c++23 } }
#include <span>
#include <string>
#include <testsuite_allocator.h>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
template<typename Range, typename Alloc>
constexpr void
do_test()
{
// The vector's value_type.
using V = typename std::allocator_traits<Alloc>::value_type;
using CT = std::char_traits<V>;
// The range's value_type.
using T = std::ranges::range_value_t<Range>;
T a[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'};
auto eq = [](const std::basic_string<V, CT, Alloc>& l, std::span<T> r) {
if (l.size() != r.size())
return false;
for (auto i = 0u; i < l.size(); ++i)
if (l[i] != r[i])
return false;
return true;
};
std::basic_string<V, CT, Alloc> v;
auto it = v.insert_range(v.end(), Range(a, a));
VERIFY( v.empty() );
VERIFY( it == v.begin() );
it = v.insert_range(v.end(), Range(a, a+4));
VERIFY( eq(v, {a, 4}) );
VERIFY( it == v.begin() );
it = v.insert_range(v.end(), Range(a+4, a+9));
VERIFY( eq(v, {a, 9}) );
VERIFY( it == v.begin()+4 );
std::basic_string<V, CT, Alloc> s = v;
it = v.insert_range(v.end(), Range(a+9, a+20));
VERIFY( eq(v, {a, 20}) );
VERIFY( it == v.begin()+9 );
v = std::basic_string<V, CT, Alloc>();
it = v.insert_range(v.begin(), Range(a, a+5));
VERIFY( it == v.begin() );
s = v;
it = v.insert_range(v.begin() + 5, Range(a+5, a+20));
VERIFY( eq(v, {a, 20}) );
VERIFY( it == v.begin()+5 );
}
template<typename Range>
constexpr void
do_test_a()
{
do_test<Range, std::allocator<char>>();
do_test<Range, __gnu_test::SimpleAllocator<char>>();
do_test<Range, std::allocator<wchar_t>>();
do_test<Range, __gnu_test::SimpleAllocator<wchar_t>>();
}
constexpr bool
test_ranges()
{
using namespace __gnu_test;
do_test_a<test_forward_range<char>>();
do_test_a<test_forward_sized_range<char>>();
do_test_a<test_sized_range_sized_sent<char, forward_iterator_wrapper>>();
do_test_a<test_input_range<char>>();
do_test_a<test_input_sized_range<char>>();
do_test_a<test_sized_range_sized_sent<char, input_iterator_wrapper>>();
do_test_a<test_range<char, input_iterator_wrapper_nocopy>>();
do_test_a<test_sized_range<char, input_iterator_wrapper_nocopy>>();
do_test_a<test_sized_range_sized_sent<char, input_iterator_wrapper_nocopy>>();
// Not lvalue-convertible to char
struct C {
constexpr C(char v) : val(v) { }
constexpr operator char() && { return val; }
constexpr bool operator==(char b) const { return b == val; }
char val;
};
using rvalue_input_range = test_range<C, input_iterator_wrapper_rval>;
do_test<rvalue_input_range, std::allocator<char>>();
return true;
}
void
test_overlapping()
{
std::string const s = "1234abcd";
std::string c = s;
c.insert_range(c.end(), std::string_view(c));
VERIFY( c == "1234abcd1234abcd" );
c = s;
c.insert_range(c.begin()+4, std::string_view(c).substr(4, 4));
VERIFY( c == "1234abcdabcd" );
c = s;
c.reserve(12);
c.insert_range(c.begin()+2, std::string_view(c).substr(0, 4));
VERIFY( c == "12123434abcd" );
}
int main()
{
test_ranges();
test_overlapping();
#if _GLIBCXX_USE_CXX11_ABI
static_assert( test_ranges() );
#endif // _GLIBCXX_USE_CXX11_ABI
}
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