/** ****************************************************************************
 * Driver program to run and count operations for loop-based analysis exercises*
 *                                                                             *
 * @author Henry M. Walker                                                     *
 * @file  TestAnalysisCount.c                                                  *
 * @date  November 13, 2024                                                    *
 *                                                                             *
 *******************************************************************************/

#include <iostream>
#include <sstream>
#include "loopCount.hpp"

using namespace std;
    
int main(int argc, char * argv []) {
    int NUM_EXERCISES = 6;

    long (* funcArray [ ]) (int, int*, int*, int*, int*, int*) = {run0Count, run1Count, run2Count,
                                                                  run3Count, run4Count, run5Count};


    // preliminaries
    cout << "Program to run loop-based code segments\n";
      
    int exer;    // loop exercise to run
    int n;       // size of test

    try {
    // error checking of command-line arguments
    // check for exactly 2 numbers supplied
    if (argc != 3) {
      throw 1;     // error 1:  wrong number o arguments
    }


    istringstream iss1 (argv[1]);
      if (!(iss1 >> exer) || !iss1.eof() || (exer < 0) || (exer >= NUM_EXERCISES) ) {
        throw 2;  // error 2:  first argument not a number;
      }
 
      istringstream iss2 (argv[2]);
      if (!(iss2 >> n) || !iss2.eof() || (n <= 0) ) {
        throw 3;  // error 2:  second argument not a number;
      }
    }  // end try block
    
    catch (int except) {
      cout << "command-line error\n";
      switch (except) {
         case 1:  cout << "     2 arguments required\n";
         case 2:  cout << "     arg. 1:  Loop variations to use --- a number between 1 and " << NUM_EXERCISES << "(inclusie)\n";
         case 3:  cout << "     arg. 2:  number of iterations to time --- a positive number\n";
         default:  cout << "     integer error identified\n";
      } ;
      cout << "exiting program\n";
      exit(1);
    }
    catch (...) {
      cout << "exception of another type\n";
      exit (1);
    }

    cout << "Running Exercise " << exer << " with time iterations = " << n << "\n";;

    int ACt, BCt, SCt, MCt, PCt;  // variables to count assignments, Boolean ops, etc.
    
    // now test desired method
    long res = funcArray[exer] (n, &ACt, &BCt, &SCt, &MCt, &PCt);

    cout << "operation couts\n";
    cout << "     assignments: " << ACt << "\n";
    cout << "     Bool.ops:    " << BCt << "\n";
    cout << "     + or - ops:  " << SCt << "\n";
    cout << "     *, /, % ops: " << MCt << "\n";
    cout << "     increments:  " << PCt << "\n";
    cout << "sum returned:     " << res << "\n";

    return 0;
}