bvt/bvt06.cc

   1 // This file is part of the ustl library, an STL implementation.
   2 //
   3 // Copyright (C) 2005 by Mike Sharov <msharov@users.sourceforge.net>
   4 // This file is free software, distributed under the MIT License.
   5 //
   6
   7 #include "stdtest.h"
   8
   9 void PrintBlock (const cmemlink& l)
  10 {
  11     const int* numbers = reinterpret_cast<const int*>(l.begin());
  12     const size_t nNumbers = l.size() / sizeof(int);
  13     for (size_t i = 0; i < nNumbers; ++ i)
  14         cout << numbers[i] << ' ';
  15     cout << endl;
  16 }
  17
  18 void TestObjectVector (void)
  19 {
  20     vector<memblock> v;
  21     const size_t nNumbers = 1000;
  22     int numbers [nNumbers];
  23     const size_t nLinks = 10;
  24     cmemlink links [nLinks];
  25     for (size_t i = 0; i < nNumbers; ++ i)
  26         numbers[i] = i;
  27     uoff_t offset = 0;
  28     for (size_t l = 0; l < nLinks; ++ l) {
  29         links[l].link (numbers + offset, l * sizeof(int));
  30         offset += l;
  31         v.push_back (memblock(links[l]));
  32     }
  33     cout.format ("---\nvector<memblock> of %zu elements:\n---\n", v.size());
  34     for_each (v.begin(), v.end(), &PrintBlock);
  35     cout.format ("---\nsize() = %zu, max_size() = ", v.size());
  36     if (v.max_size() == SIZE_MAX / sizeof(memblock))
  37         cout << "SIZE_MAX/elsize";
  38     else
  39         cout << v.max_size();
  40     static const char tf[2][6]={"false","true"};
  41     cout.format (", empty() = %s\n", tf[v.empty()]);
  42     v.push_back (memblock(5));
  43     cout.format ("back()->size() = %zu\n", v.back().size());
  44     v.back().resize (40);
  45     cout.format ("back()->size() = %zu\n", v.back().size());
  46     v.pop_back();
  47     PrintBlock (v.back());
  48     vector<memblock> cache;
  49     cache.assign (v.begin(), v.end());
  50     v.clear();
  51     v.assign (cache.begin(), cache.end());
  52     v.erase (v.begin() + 5, 2);
  53     v.erase (v.end() - 1, 1);
  54     v.erase (v.end(), size_t(0));
  55     cout.format ("---\nvector of %zu elements backwards:\n---\n", v.size());
  56     for_each (v.rbegin(), v.rend(), &PrintBlock);
  57     cout << "---\n";
  58 }
  59
  60 StdBvtMain (TestObjectVector)
  61