JArray.cc

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#include <iostream>
#include <iomanip>
#include <iterator>
#include <cmath>
 
#include "JTools/JArray.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
/**
 * \file
 *
 * Example program to test JTOOLS::JArray class.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
 
  int           debug;
 
  try {
 
    JParser<> zap("Example program to test fixed length array class.");
 
    zap['d'] = make_field(debug)           = 3;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  {
    const int i0 = 1;
 
    JArray<1, int> array(i0);
 
    ASSERT(i0 == array[0]);
  }
 
  {
    const int i0 = 1;
    const int i1 = 2;
 
    JArray<2, int> array(i0, i1);
 
    ASSERT(i0 == array[0]);
    ASSERT(i1 == array[1]);
  }
 
 
  {
    const int N = 9;
 
    typedef JArray<N,   int>       JArray1_t;
    typedef JArray<N-1, int>       JArray2_t;
  
    JArray1_t array;
    
    for (JArray1_t::iterator i = array.begin(); i != array.end(); ++i) {
      *i = distance(array.begin(),i);
    }
 
    if (debug >= debug_t) {
      cout << "input        A    ";
      copy(array.begin(), array.end(), ostream_iterator<int>(cout, " "));
      cout << endl;
    }      
 
    {
      JArray1_t buffer = array + array;
 
      for (int i = 0; i != N; ++i) {
        ASSERT(2*array[i] == buffer[i]);
      }
    }
 
    {
      JArray2_t buffer = array.pop_front();
     
      if (debug >= debug_t) {
        cout << "pop_front "; 
        copy(buffer.begin(), buffer.end(), ostream_iterator<int>(cout, " "));
        cout << endl;
      }
 
      for (int i = 0; i != N-1; ++i) {
        ASSERT(array[i+1] == buffer[i]);
      }
    }
 
    {
      JArray1_t buffer(array.pop_back(), array[N-1]);
 
      ASSERT(array == buffer);
    }
 
    {
      JArray2_t buffer = array.pop_back();
      
      if (debug >= debug_t) {
        cout << "pop_back  ";
        copy(buffer.begin(), buffer.end(), ostream_iterator<int>(cout, " "));
        cout << endl;
      }
 
      for (int i = 0; i != N-1; ++i) {
        ASSERT(array[i] == buffer[i]);
      }
    }
  }
 
  {
    JArray<3, int> array(1, 2, 3);
 
    JArray<3, const int> p3(array);
 
    if (debug >= debug_t) {
      copy(p3.begin(), p3.end(), ostream_iterator<int>(cout, " "));
      cout << endl;
    }
 
    ASSERT(array[0] == p3[0]);
 
    JArray<2, const int> p2(p3.pop_front());
 
    if (debug >= debug_t) {
      copy(p2.begin(), p2.end(), ostream_iterator<int>(cout, " "));
      cout << endl;
    }
 
    ASSERT(array[1] == p2[0]);
 
    JArray<1, const int> p1(p2.pop_front());
 
    if (debug >= debug_t) {
      copy(p1.begin(), p1.end(), ostream_iterator<int>(cout, " "));
      cout << endl;
    }
 
    ASSERT(array[2] == p1[0]);
 
    //JArray<0, const int> p0(p1.pop_front());   // compile error, as should be
  }
 
  return 0;
}