/**Function*************************************************************
Synopsis [Connect the object to the fanin.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ObjConnect( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFan0, Aig_Obj_t * pFan1 )
{
assert( !Aig_IsComplement(pObj) );
assert( !Aig_ObjIsPi(pObj) );
// add the first fanin
pObj->pFanin0 = pFan0;
pObj->pFanin1 = pFan1;
// increment references of the fanins and add their fanouts
if ( pFan0 != NULL )
{
assert( Aig_ObjFanin0(pObj)->Type > 0 );
Aig_ObjRef( Aig_ObjFanin0(pObj) );
if ( p->pFanData )
Aig_ObjAddFanout( p, Aig_ObjFanin0(pObj), pObj );
}
if ( pFan1 != NULL )
{
assert( Aig_ObjFanin1(pObj)->Type > 0 );
Aig_ObjRef( Aig_ObjFanin1(pObj) );
if ( p->pFanData )
Aig_ObjAddFanout( p, Aig_ObjFanin1(pObj), pObj );
}
// set level and phase
pObj->Level = Aig_ObjLevelNew( pObj );
pObj->fPhase = Aig_ObjPhaseReal(pFan0) & Aig_ObjPhaseReal(pFan1);
// add the node to the structural hash table
if ( p->pTable && Aig_ObjIsHash(pObj) )
Aig_TableInsert( p, pObj );
// add the node to the dynamically updated topological order
// if ( p->pOrderData && Aig_ObjIsNode(pObj) )
// Aig_ObjOrderInsert( p, pObj->Id );
assert( !Aig_ObjIsNode(pObj) || pObj->Level > 0 );
}
/**Function*************************************************************
Synopsis [Replaces the first fanin of the node by the new fanin.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Aig_ObjPatchFanin0( Aig_Man_t * p, Aig_Obj_t * pObj, Aig_Obj_t * pFaninNew )
{
Aig_Obj_t * pFaninOld;
assert( !Aig_IsComplement(pObj) );
assert( Aig_ObjIsPo(pObj) );
pFaninOld = Aig_ObjFanin0(pObj);
// decrement ref and remove fanout
if ( p->pFanData )
Aig_ObjRemoveFanout( p, pFaninOld, pObj );
Aig_ObjDeref( pFaninOld );
// update the fanin
pObj->pFanin0 = pFaninNew;
// increment ref and add fanout
if ( p->pFanData )
Aig_ObjAddFanout( p, Aig_ObjFanin0(pObj), pObj );
Aig_ObjRef( Aig_ObjFanin0(pObj) );
// get rid of old fanin
if ( !Aig_ObjIsPi(pFaninOld) && !Aig_ObjIsConst1(pFaninOld) && Aig_ObjRefs(pFaninOld) == 0 )
Aig_ObjDelete_rec( p, pFaninOld, 1 );
}