//  IntArray.cc
//  4 March 12002
//  Robert Baertsch

#include "IntArray.h"
#include <assert.h>
#include <iostream>

IntArray::IntArray(int size )
{
    Ints = new int[size];
    AllocInts = size;
    NumInts = 0;
}

IntArray::IntArray(const IntArray &A)
{
    Ints = new int[A.NumInts];
    AllocInts = A.NumInts;
    NumInts = A.NumInts;		

    for(int i=0; i<NumInts; i++)
	    Ints[i] = A[i];
}

IntArray& IntArray::operator= (const IntArray &A)
{
    NumInts=0;
    if (A.NumInts > AllocInts)
    {	Realloc(A.NumInts);
    }
    NumInts = A.NumInts;		

    for(int i=0; i<NumInts; i++)
	Ints[i] = A.Ints[i];

    return *this;
}

IntArray::~IntArray(void)
{
    delete [] Ints;
}

void IntArray::append_int(const int newelem)
{
    if (NumInts >= AllocInts)
    {	int new_size = (AllocInts>5)? 2*AllocInts: 10;
	Realloc(new_size);
    }
    Ints[NumInts++] = newelem;
}

void IntArray::Realloc(int newsize)
{
    assert(newsize < 10000000);
    assert(newsize>=NumInts);
    int * newset = new int[newsize];

    for(int i=0; i<NumInts;  i++)
    	newset[i] = Ints[i];

    delete [] Ints;
    Ints   = newset;
    AllocInts=newsize;
}