/*===========================================================================

 Copyright (C) 2002-2020 Yves Renard.

 This file is a part of GetFEM

 GetFEM  is  free software;  you  can  redistribute  it  and/or modify it
 under  the  terms  of the  GNU  Lesser General Public License as published
 by  the  Free Software Foundation;  either version 3 of the License,  or
 (at your option) any later version along with the GCC Runtime Library
 Exception either version 3.1 or (at your option) any later version.
 This program  is  distributed  in  the  hope  that it will be useful,  but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or  FITNESS  FOR  A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 License and GCC Runtime Library Exception for more details.
 You  should  have received a copy of the GNU Lesser General Public License
 along  with  this program;  if not, write to the Free Software Foundation,
 Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.

===========================================================================*/
#include "getfem/dal_basic.h"
#include <deque>
#include <complex>

using std::endl; using std::cout; using std::cerr;
using std::ends; using std::cin;


typedef std::deque<int>::size_type size_type;
template<typename T> struct dyndeque : public std::deque<T> {
  T &operator[](unsigned i) { 
    if (i >= this->size()) 
      this->resize(i+1); 
    return std::deque<T>::operator[](i); 
  }
};

template<typename T> struct dynarray : public dal::dynamic_array<T> {
  void push_back(const T& t) { (*this)[this->size()] = t; }
};

template <typename DA> void bench_da(unsigned N1, unsigned N2) {
  double t = gmm::uclock_sec();
  DA v;
  for (unsigned n=0; n < N1; ++n) {
    v.clear();
    for (unsigned i=0; i < N2; ++i) {
      v.push_back(i);
    }
  }
  cout << "  push_back         : " << gmm::uclock_sec()-t << " sec\n";

  t = gmm::uclock_sec();
  v.clear();
  v.resize(N2);
  for (unsigned n=0; n < N1*2; ++n) {
    for (unsigned i=0; i < N2; ++i) {
      v[i] = i+n;
    }
  }
  cout << "  random access fill: " << gmm::uclock_sec()-t << " sec\n";
  
  t = gmm::uclock_sec();
  v.clear();
  v.resize(N2);
  for (unsigned n=0; n < N1*2; ++n) {
    typename DA::iterator it = v.begin(), ite = v.end();
    for (; it != ite; ++it) {
      *it += n;
    }
  }
  cout << "  iterator fill     : " << gmm::uclock_sec()-t << " sec\n";

  DA v2; v2.resize(N2);
  { typename DA::iterator it = v2.begin(), ite = v2.end();
    for (; it != ite; ++it) *it = rand(); }

  t = gmm::uclock_sec(); 
  for (unsigned n=0; n < N1/10; ++n) {
    v = v2; std::sort(v.begin(), v.end());
  }
  cout << "  sort              : " << gmm::uclock_sec()-t << " sec\n";
  
}

void bench() {
  unsigned N1=1000, N2 = 10000;
  cout << "dynamic_array<long long> performances: \n";
  bench_da<dynarray<size_type> >(N1, N2);
  cout << "std::deque<long long> performances:\n";
  bench_da<dyndeque<size_type> >(N1, N2);
  cout << "dynamic_array<int> performances: \n";
  bench_da<dynarray<int> >(N1, N2);
  cout << "std::deque<int> performances:\n";
  bench_da<dyndeque<int> >(N1, N2);
}


int main(void) {
  try {

    cout << "size of int           : " << sizeof(int)           << endl;
    cout << "size of size_t        : " << sizeof(size_t)        << endl;
    cout << "size of (int *)       : " << sizeof(int *)         << endl;
    cout << "size of short int     : " << sizeof(short int)     << endl;
    cout << "size of long int      : " << sizeof(long int)      << endl;
    cout << "size of long long int : " << sizeof(long long int) << endl;
    cout << "size of char          : " << sizeof(char)          << endl;
    cout << "size of float         : " << sizeof(float)         << endl;
    cout << "size of double        : " << sizeof(double)        << endl;
    cout << "size of long double   : " << sizeof(long double)   << endl;
    cout << "size of complex<float>: " << sizeof(std::complex<float>)
	 << endl;
    cout << "size of complex<double>: " << sizeof(std::complex<double>)
	 << endl;
    cout << "size of complex<long double>: "
	 << sizeof(std::complex<long double>) << endl;

    assert(sizeof(gmm::int8_type)   == 1);
    assert(sizeof(gmm::uint8_type)  == 1);
    assert(sizeof(gmm::int16_type)  == 2);
    assert(sizeof(gmm::uint16_type) == 2);
    assert(sizeof(gmm::int32_type)  == 4);
    assert(sizeof(gmm::uint32_type) == 4);
    assert(sizeof(gmm::int64_type)  == 8);
    assert(sizeof(gmm::uint64_type) == 8);

    // from stl_config.h
#   ifdef __GNUC__
    cout << "Gnu compiler " << __GNUC__ << "." << __GNUC_MINOR__ << endl;
#   endif

#   if defined(__sgi) && !defined(__GNUC__)
    cout << "Sgi compiler " << _COMPILER_VERSION << endl;
#   endif

#   if defined(__SUNPRO_CC)
    cout << "Sun pro compiler\n";
#   endif

#   if defined(__BORLANDC__)
    cout << "Borland compiler\n";
#   endif

    // std::complex<float> x(1.0,0.0);
    // cout << "A complex : " << x << endl;

    bench();
    
    size_t ee = 1, f = 2;
    ptrdiff_t g = ee - f;
    cout << "1 - 2 = " << g << endl;
    GMM_ASSERT1(g == -1, "Basic operation error");

    dal::dynamic_array<int, 4> t;

#ifndef NDEBUG
    try {
      t[(unsigned)(-5)] = 8;
      GMM_ASSERT1(false, "negative index does not produce an error");
    }
    catch(const std::logic_error &e) {
      cout << "Out of range error successfully catched, ok\n";
    }
#endif

    t[64] = 13;
    // cout << "capacity : (should be 80) " << t.capacity() << endl;
    GMM_ASSERT1(t.capacity() == 80, " bad capacity");
    
    dal::dynamic_array<int, 4>::iterator itb = t.begin(), ite = t.end();
    dal::dynamic_array<int, 4>::iterator ita;
    ita = itb++;
    // cout << "range : " << (ita - t.begin()) << endl;
    
    while (itb != ite)  *itb++ = int(3);
    
    
    // std::fill(t.begin(), t.end(), int(3));
    
    // cout << "capacity : (should be 80) " << t.capacity() << endl;
    GMM_ASSERT1(t.capacity() == 80, "bad capacity");
    // cout << "t[64] = (should be 3) " << t[64] << endl;
    GMM_ASSERT1(t[64] == 3, "iterators don't work");
    
    t.clear();
    // cout << "capacity : (should be 0) " << t.capacity() << endl;
    GMM_ASSERT1(t.capacity() == 0, "clear does not work");
   
    std::fill(t.begin(), t.end(), int(3));
    // cout << "capacity : (should be 0) " << t.capacity() << endl;
    GMM_ASSERT1(t.capacity() == 0, "clear does not work");
    t[64] = 6;
    
    dal::dynamic_array<int, 4> t2, t3;
    
    t2[64] = 12;
    t3 = t2 = t;
    
    // cout << "capacity : (should be 80) " << t.capacity() << endl;
    GMM_ASSERT1(t.capacity() == 80, " bad capacity");

    {
      dal::dynamic_array<int, 4>::const_iterator
	it1 = ((const dal::dynamic_array<int, 4> *)(&t))->begin(),
	it2 = ((const dal::dynamic_array<int, 4> *)(&t2))->begin(),
	it3 = ((const dal::dynamic_array<int, 4> *)(&t3))->begin(),
	ite2 = ((const dal::dynamic_array<int, 4> *)(&t))->end(),
	itb2 = ((const dal::dynamic_array<int, 4> *)(&t))->begin();
      
      for ( ; it1 != ite2; it1++, it2++, it3++)
      {
	size_t ind = it1 - itb2;
	if 
	( ( (&(*it1)) != &(t[ind]) ) ||
	  ( (&(*it2)) != &(t2[ind]) ) ||
	  ( (&(*it3)) != &(t3[ind]) ) ||
	  ( (&(*it1)) == (&(*it2)) ) ||
	  ( (&(*it2)) == (&(*it3)) ) ||
	  ( (&(*it1)) == (&(*it3)) ) )
	  GMM_ASSERT1(false, " copy does not work");
      }
    }
    
    {
      dal::dynamic_array<int, 4>::iterator
	it1 = t.begin(),
	it2 = t2.begin(),
	it3 = t3.begin(),
	ite2 = t.end(),
	itb2 = t.begin();
      
      for ( ; it1 != ite2; it1++, it2++, it3++)
	{
	  size_t ind = it1 - itb2;
	  
	  if 
	  ( ( (&(*it1)) != &(t[ind]) ) ||
	    ( (&(*it2)) != &(t2[ind]) ) ||
	    ( (&(*it3)) != &(t3[ind]) ) ||
	    ( (&(*it1)) == (&(*it2)) ) ||
	    ( (&(*it2)) == (&(*it3)) ) ||
	    ( (&(*it1)) == (&(*it3)) ) )
	    GMM_ASSERT1(false, " copy does not work");
	}
    }
    
    
    t[64] = 11;
    
    // cout << "t2[64] = (should be 6 6) " << t2[64] << " " << t3[64]<< endl;
    GMM_ASSERT1(t2[64] == 6, " copy does not work");
    // cout << "capacity : (should be 80) " << t3.capacity() << endl;
    GMM_ASSERT1(t.capacity() == 80, "bad capacity");

  }
  GMM_STANDARD_CATCH_ERROR;

  return 0;
}