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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <deque>
     11 
     12 // template <class T, class A>
     13 //   void swap(deque<T, A>& x, deque<T, A>& y);
     14 
     15 #include <deque>
     16 #include <cassert>
     17 #include "test_allocator.h"
     18 #include "min_allocator.h"
     19 
     20 template <class C>
     21 C
     22 make(int size, int start = 0 )
     23 {
     24     const int b = 4096 / sizeof(int);
     25     int init = 0;
     26     if (start > 0)
     27     {
     28         init = (start+1) / b + ((start+1) % b != 0);
     29         init *= b;
     30         --init;
     31     }
     32     C c(init, 0);
     33     for (int i = 0; i < init-start; ++i)
     34         c.pop_back();
     35     for (int i = 0; i < size; ++i)
     36         c.push_back(i);
     37     for (int i = 0; i < start; ++i)
     38         c.pop_front();
     39     return c;
     40 };
     41 
     42 template <class C>
     43 void testN(int start, int N, int M)
     44 {
     45     C c1 = make<C>(N, start);
     46     C c2 = make<C>(M);
     47     C c1_save = c1;
     48     C c2_save = c2;
     49     swap(c1, c2);
     50     assert(c1 == c2_save);
     51     assert(c2 == c1_save);
     52 }
     53 
     54 int main()
     55 {
     56     {
     57         int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
     58         const int N = sizeof(rng)/sizeof(rng[0]);
     59         for (int i = 0; i < N; ++i)
     60             for (int j = 0; j < N; ++j)
     61                 for (int k = 0; k < N; ++k)
     62                     testN<std::deque<int> >(rng[i], rng[j], rng[k]);
     63     }
     64     {
     65         int a1[] = {1, 3, 7, 9, 10};
     66         int a2[] = {0, 2, 4, 5, 6, 8, 11};
     67         typedef test_allocator<int> A;
     68         std::deque<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A(1));
     69         std::deque<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A(2));
     70         swap(c1, c2);
     71         assert((c1 == std::deque<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
     72         assert(c1.get_allocator() == A(1));
     73         assert((c2 == std::deque<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
     74         assert(c2.get_allocator() == A(2));
     75     }
     76     {
     77         int a1[] = {1, 3, 7, 9, 10};
     78         int a2[] = {0, 2, 4, 5, 6, 8, 11};
     79         typedef other_allocator<int> A;
     80         std::deque<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A(1));
     81         std::deque<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A(2));
     82         swap(c1, c2);
     83         assert((c1 == std::deque<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
     84         assert(c1.get_allocator() == A(2));
     85         assert((c2 == std::deque<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
     86         assert(c2.get_allocator() == A(1));
     87     }
     88 #if __cplusplus >= 201103L
     89     {
     90         int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
     91         const int N = sizeof(rng)/sizeof(rng[0]);
     92         for (int i = 0; i < N; ++i)
     93             for (int j = 0; j < N; ++j)
     94                 for (int k = 0; k < N; ++k)
     95                     testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
     96     }
     97     {
     98         int a1[] = {1, 3, 7, 9, 10};
     99         int a2[] = {0, 2, 4, 5, 6, 8, 11};
    100         typedef min_allocator<int> A;
    101         std::deque<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A());
    102         std::deque<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A());
    103         swap(c1, c2);
    104         assert((c1 == std::deque<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
    105         assert(c1.get_allocator() == A());
    106         assert((c2 == std::deque<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
    107         assert(c2.get_allocator() == A());
    108     }
    109 #endif
    110 }
    111