143 lines
3.2 KiB
C++
143 lines
3.2 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <string>
|
|
|
|
// basic_string(const basic_string& str, const Allocator& alloc);
|
|
|
|
#include <string>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
#include "test_allocator.h"
|
|
#include "min_allocator.h"
|
|
|
|
#ifndef TEST_HAS_NO_EXCEPTIONS
|
|
struct alloc_imp {
|
|
bool active;
|
|
|
|
alloc_imp() : active(true) {}
|
|
|
|
template <class T>
|
|
T* allocate(std::size_t n)
|
|
{
|
|
if (active)
|
|
return static_cast<T*>(std::malloc(n * sizeof(T)));
|
|
else
|
|
throw std::bad_alloc();
|
|
}
|
|
|
|
template <class T>
|
|
void deallocate(T* p, std::size_t) { std::free(p); }
|
|
void activate () { active = true; }
|
|
void deactivate() { active = false; }
|
|
};
|
|
|
|
template <class T>
|
|
struct poca_alloc {
|
|
typedef T value_type;
|
|
typedef std::true_type propagate_on_container_copy_assignment;
|
|
|
|
alloc_imp *imp;
|
|
|
|
poca_alloc(alloc_imp *imp_) : imp (imp_) {}
|
|
|
|
template <class U>
|
|
poca_alloc(const poca_alloc<U>& other) : imp(other.imp) {}
|
|
|
|
T* allocate (std::size_t n) { return imp->allocate<T>(n);}
|
|
void deallocate(T* p, std::size_t n) { imp->deallocate(p, n); }
|
|
};
|
|
|
|
template <typename T, typename U>
|
|
bool operator==(const poca_alloc<T>& lhs, const poca_alloc<U>& rhs)
|
|
{
|
|
return lhs.imp == rhs.imp;
|
|
}
|
|
|
|
template <typename T, typename U>
|
|
bool operator!=(const poca_alloc<T>& lhs, const poca_alloc<U>& rhs)
|
|
{
|
|
return lhs.imp != rhs.imp;
|
|
}
|
|
|
|
template <class S>
|
|
void test_assign(S &s1, const S& s2)
|
|
{
|
|
try { s1 = s2; }
|
|
catch ( std::bad_alloc &) { return; }
|
|
assert(false);
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
template <class S>
|
|
void
|
|
test(S s1, const typename S::allocator_type& a)
|
|
{
|
|
S s2(s1, a);
|
|
LIBCPP_ASSERT(s2.__invariants());
|
|
assert(s2 == s1);
|
|
assert(s2.capacity() >= s2.size());
|
|
assert(s2.get_allocator() == a);
|
|
}
|
|
|
|
bool test() {
|
|
{
|
|
typedef test_allocator<char> A;
|
|
typedef std::basic_string<char, std::char_traits<char>, A> S;
|
|
test(S(), A(3));
|
|
test(S("1"), A(5));
|
|
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7));
|
|
}
|
|
#if TEST_STD_VER >= 11
|
|
{
|
|
typedef min_allocator<char> A;
|
|
typedef std::basic_string<char, std::char_traits<char>, A> S;
|
|
test(S(), A());
|
|
test(S("1"), A());
|
|
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
|
|
}
|
|
|
|
#ifndef TEST_HAS_NO_EXCEPTIONS
|
|
{
|
|
typedef poca_alloc<char> A;
|
|
typedef std::basic_string<char, std::char_traits<char>, A> S;
|
|
const char * p1 = "This is my first string";
|
|
const char * p2 = "This is my second string";
|
|
|
|
alloc_imp imp1;
|
|
alloc_imp imp2;
|
|
S s1(p1, A(&imp1));
|
|
S s2(p2, A(&imp2));
|
|
|
|
assert(s1 == p1);
|
|
assert(s2 == p2);
|
|
|
|
imp2.deactivate();
|
|
test_assign(s1, s2);
|
|
assert(s1 == p1);
|
|
assert(s2 == p2);
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
test();
|
|
#if TEST_STD_VER > 17
|
|
// static_assert(test());
|
|
#endif
|
|
|
|
return 0;
|
|
}
|