/*

* SEarritr.h

*

* Ian Soboroff, NIST

* June, 1994

*

* This is an iterator class for arrays of STEPentities. Given a

* STEPentity** and its size, you can create one of these, with which

* you can neatly iterate through the array. Since it's an array of

* _pointers_ to STEPentities, they can point to anything derived from

* that class, i.e., whatever entities you've drawn up in the schema.

*

*/

// SEarrIterator -- an iterator class to walk arrays of pointers to STEP

// entities (class STEPEntity).

// Best used in the form: for (SEitr=0; !SEitr; ++SEitr) { ... }

// (this for loop walks the whole array)

class SEarrIterator {

private:

const STEPentity ** SEarr; // Array of pointers to STEPentity's

int index; // current index

int size; // size of array

public:

// Construct the iterator with a given array and its size

SEarrIterator( const STEPentity ** entarr, int sz ) {

SEarr = entarr;

index = 0;

size = sz;

}

// set the value of the index: SEitr = 3

void operator= ( int newindex ) {

index = newindex;

}

// check if we're out of range: if (!SEitr)...

int operator!() {

return ( index < size );

}

// return current element: SEptr = SEitr()

STEPentity * operator()() {

return ( STEPentity * )SEarr[index];

}

// PREFIX increment operator: ++SEitr

int operator++ () {

index++;

return operator!();

}

};