1 files changed, 204 insertions, 0 deletions
diff --git a/src/opt/nwk/nwkObj.c b/src/opt/nwk/nwkObj.c
new file mode 100644
index 00000000..e5930087
--- /dev/null
+++ b/src/opt/nwk/nwkObj.c
@@ -0,0 +1,204 @@
+/**CFile****************************************************************
+
+  FileName    [nwkObj.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Logic network representation.]
+
+  Synopsis    [Manipulation of objects.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 20, 2005.]
+
+  Revision    [$Id: nwkObj.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "nwk.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    [Creates an object.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Nwk_Obj_t * Nwk_ManCreateObj( Nwk_Man_t * p, int nFanins, int nFanouts )
+{
+    Nwk_Obj_t * pObj;
+    pObj = (Nwk_Obj_t *)Aig_MmFlexEntryFetch( p->pMemObjs, sizeof(Nwk_Obj_t) + (nFanins + nFanouts + p->nFanioPlus) * sizeof(Nwk_Obj_t *) );
+    memset( pObj, 0, sizeof(Nwk_Obj_t) );
+    pObj->pFanio = (Nwk_Obj_t **)((char *)pObj + sizeof(Nwk_Obj_t));
+    pObj->Id = Vec_PtrSize( p->vObjs );
+    Vec_PtrPush( p->vObjs, pObj );
+    pObj->pMan        = p;
+    pObj->nFanioAlloc = nFanins + nFanouts + p->nFanioPlus;
+    return pObj;
+}
+
+
+/**Function*************************************************************
+
+  Synopsis    [Creates a primary input.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Nwk_Obj_t * Nwk_ManCreateCi( Nwk_Man_t * p, int nFanouts )
+{
+    Nwk_Obj_t * pObj;
+    pObj = Nwk_ManCreateObj( p, 1, nFanouts );
+    pObj->PioId = Vec_PtrSize( p->vCis );
+    Vec_PtrPush( p->vCis, pObj );
+    pObj->Type = NWK_OBJ_CI;
+    p->nObjs[NWK_OBJ_CI]++;
+    return pObj;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Creates a primary output.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Nwk_Obj_t * Nwk_ManCreateCo( Nwk_Man_t * p )
+{
+    Nwk_Obj_t * pObj;
+    pObj = Nwk_ManCreateObj( p, 1, 1 );
+    pObj->PioId = Vec_PtrSize( p->vCos );
+    Vec_PtrPush( p->vCos, pObj );
+    pObj->Type = NWK_OBJ_CO;
+    p->nObjs[NWK_OBJ_CO]++;
+    return pObj;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Creates a latch.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Nwk_Obj_t * Nwk_ManCreateLatch( Nwk_Man_t * p )
+{
+    Nwk_Obj_t * pObj;
+    pObj = Nwk_ManCreateObj( p, 1, 1 );
+    pObj->Type = NWK_OBJ_LATCH;
+    p->nObjs[NWK_OBJ_LATCH]++;
+    return pObj;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Creates a node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+Nwk_Obj_t * Nwk_ManCreateNode( Nwk_Man_t * p, int nFanins, int nFanouts )
+{
+    Nwk_Obj_t * pObj;
+    pObj = Nwk_ManCreateObj( p, nFanins, nFanouts );
+    pObj->Type = NWK_OBJ_NODE;
+    p->nObjs[NWK_OBJ_NODE]++;
+    return pObj;
+}
+
+
+/**Function*************************************************************
+
+  Synopsis    [Deletes the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Nwk_ManDeleteNode( Nwk_Obj_t * pObj )
+{
+    Vec_Ptr_t * vNodes = pObj->pMan->vTemp;
+    Nwk_Obj_t * pTemp;
+    int i;
+    assert( Nwk_ObjFanoutNum(pObj) == 0 );
+    // delete fanins
+    Nwk_ObjCollectFanins( pObj, vNodes );
+    Vec_PtrForEachEntry( Nwk_Obj_t *, vNodes, pTemp, i )
+        Nwk_ObjDeleteFanin( pObj, pTemp );
+    // remove from the list of objects
+    Vec_PtrWriteEntry( pObj->pMan->vObjs, pObj->Id, NULL );
+    pObj->pMan->nObjs[pObj->Type]--;
+    memset( pObj, 0, sizeof(Nwk_Obj_t) );
+    pObj->Id = -1;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Deletes the node and MFFC of the node.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Nwk_ManDeleteNode_rec( Nwk_Obj_t * pObj )
+{
+    Vec_Ptr_t * vNodes;
+    int i;
+    assert( !Nwk_ObjIsCi(pObj) );
+    assert( Nwk_ObjFanoutNum(pObj) == 0 );
+    vNodes = Vec_PtrAlloc( 100 );
+    Nwk_ObjCollectFanins( pObj, vNodes );
+    Nwk_ManDeleteNode( pObj );
+    Vec_PtrForEachEntry( Nwk_Obj_t *, vNodes, pObj, i )
+        if ( Nwk_ObjIsNode(pObj) && Nwk_ObjFanoutNum(pObj) == 0 )
+            Nwk_ManDeleteNode_rec( pObj );
+    Vec_PtrFree( vNodes );
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+