cxx/test/containers/sequences/deque/deque.modifiers/emplace.pass.cpp

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <deque>
// template <class... Args> iterator emplace(const_iterator p, Args&&... args);
#include <deque>
#include <cassert>
#include "../../../Emplaceable.h"
#ifdef _LIBCPP_MOVE
std::deque<Emplaceable>
make(int size, int start = 0 )
{
const int b = 4096 / sizeof(int);
int init = 0;
if (start > 0)
{
init = (start+1) / b + ((start+1) % b != 0);
init *= b;
--init;
}
std::deque<Emplaceable> c(init);
for (int i = 0; i < init-start; ++i)
c.pop_back();
for (int i = 0; i < size; ++i)
c.push_back(Emplaceable());
for (int i = 0; i < start; ++i)
c.pop_front();
return c;
};
void
test(int P, std::deque<Emplaceable>& c1)
{
typedef std::deque<Emplaceable> C;
typedef C::iterator I;
typedef C::const_iterator CI;
std::size_t c1_osize = c1.size();
CI i = c1.emplace(c1.begin() + P, Emplaceable(1, 2.5));
assert(i == c1.begin() + P);
assert(c1.size() == c1_osize + 1);
assert(distance(c1.begin(), c1.end()) == c1.size());
assert(*i == Emplaceable(1, 2.5));
}
void
testN(int start, int N)
{
typedef std::deque<Emplaceable> C;
typedef C::iterator I;
typedef C::const_iterator CI;
for (int i = 0; i <= 3; ++i)
{
if (0 <= i && i <= N)
{
C c1 = make(N, start);
test(i, c1);
}
}
for (int i = N/2-1; i <= N/2+1; ++i)
{
if (0 <= i && i <= N)
{
C c1 = make(N, start);
test(i, c1);
}
}
for (int i = N - 3; i <= N; ++i)
{
if (0 <= i && i <= N)
{
C c1 = make(N, start);
test(i, c1);
}
}
}
#endif // _LIBCPP_MOVE
int main()
{
#ifdef _LIBCPP_MOVE
int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
const int N = sizeof(rng)/sizeof(rng[0]);
for (int i = 0; i < N; ++i)
for (int j = 0; j < N; ++j)
testN(rng[i], rng[j]);
#endif // _LIBCPP_MOVE
}