test-memarray.C

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/* Aleph-w
 
     / \  | | ___ _ __ | |__      __      __
    / _ \ | |/ _ \ '_ \| '_ \ ____\ \ /\ / / Data structures & Algorithms
   / ___ \| |  __/ |_) | | | |_____\ V  V /  version 1.9c
  /_/   \_\_|\___| .__/|_| |_|      \_/\_/   https://github.com/lrleon/Aleph-w
                 |_|         
 
  This file is part of Aleph-w library
 
  Copyright (c) 2002-2018 Leandro Rabindranath Leon 
 
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*/
 
# include <iostream>
# include <memory>
# include <concepts>
# include <stdexcept>
# include <ah-errors.H>
# include <tpl_memArray.H>
 
using namespace std;
using namespace Aleph;
 
int g_count = -1;
 
struct Foo
{
  std::unique_ptr<int> ptr;
 
  Foo() : ptr(std::make_unique<int>(::g_count--)) {}
 
  Foo(int i) : ptr(std::make_unique<int>(i)) {}
 
  Foo(const Foo & f) : ptr(f.ptr ? std::make_unique<int>(*f.ptr) : nullptr) {}
 
  Foo(Foo && f) noexcept = default;
 
  Foo & operator = (const Foo & f)
  {
    if (this != &f)
      ptr = f.ptr ? std::make_unique<int>(*f.ptr) : nullptr;
    return *this;
  }
 
  Foo & operator = (Foo && f) noexcept = default;
 
  ~Foo() = default;
 
  operator int () const 
  { 
    ah_domain_error_if(not ptr) << "Attempt to access null Foo";
    return *ptr; 
  }
};
 
template <typename T>
  requires std::convertible_to<T, int>
void print(const MemArray<T> & s)
{
  cout << "capacity = " << s.capacity() << endl
       << "size     = " << s.size() << endl;
 
  for (size_t i = 0; i < s.size(); ++i)
    {
      int val = s[i];
      cout << val << " ";
    }
  cout << endl
       << endl;
}
 
template <typename T>
  requires std::constructible_from<T, int>
MemArray<T> create_memarray(int n)
{
  MemArray<T> ret(n);
 
  for (int i = 0; i < n; ++i)
    ret.put(T(i));
 
  return ret;
}
 
int main(int argc, char * argv[])
{
  MemArray<int> s;
 
  print(s);
 
  int n = 1000;
  if (argc > 1)
    {
      try { n = stoi(argv[1]); }
      catch (const std::invalid_argument &) { n = 1000; }
      catch (const std::out_of_range &) { n = 1000; }
      ah_invalid_argument_if(n <= 0) << "n must be > 0";
    }
 
  for (int i = 0; i < n; ++i)
    s.put(i);
 
  print(s);
 
  int m = n / 4;
  if (argc > 2)
    {
      try { m = stoi(argv[2]); }
      catch (const std::invalid_argument &) { m = n / 4; }
      catch (const std::out_of_range &) { m = n / 4; }
      ah_invalid_argument_if(m < 0 or m > n) << "m must be between 0 and n";
    }
  
  cout << "Extracting " << m << " items" << endl;
  for (int i = 0; i < m; ++i)
    cout << s.get() << " ";
  cout << endl;
 
  print(s);
 
  MemArray<int> c(s);
 
  print(c);
 
  print(create_memarray<int>(n));
 
  print(create_memarray<Foo>(n));
}