1547 static Index *indexIteratorFirst(IndexIterator *pIter, int *pIx){  in indexIteratorFirst()  argument
1548   assert( pIter->i==0 );  in indexIteratorFirst()
1549   if( pIter->eType ){  in indexIteratorFirst()
1550     *pIx = pIter->u.ax.aIdx[0].ix;  in indexIteratorFirst()
1551     return pIter->u.ax.aIdx[0].p;  in indexIteratorFirst()
1554     return pIter->u.lx.pIdx;  in indexIteratorFirst()
1559 static Index *indexIteratorNext(IndexIterator *pIter, int *pIx){  in indexIteratorNext()  argument
1560   if( pIter->eType ){  in indexIteratorNext()
1561     int i = ++pIter->i;  in indexIteratorNext()
1562     if( i>=pIter->u.ax.nIdx ){  in indexIteratorNext()
1566     *pIx = pIter->u.ax.aIdx[i].ix;  in indexIteratorNext()
1567     return pIter->u.ax.aIdx[i].p;  in indexIteratorNext()
1570     pIter->u.lx.pIdx = pIter->u.lx.pIdx->pNext;  in indexIteratorNext()
1571     return pIter->u.lx.pIdx;  in indexIteratorNext()