Version abc60611

1 files changed, 165 insertions, 0 deletions

diff --git a/src/temp/ivy/ivyUndo.c b/src/temp/ivy/ivyUndo.c
new file mode 100644
index 00000000..6612bf42
--- /dev/null
+++ b/src/temp/ivy/ivyUndo.c
@@ -0,0 +1,165 @@
+/**CFile****************************************************************
+
+  FileName    [ivyUndo.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [And-Inverter Graph package.]
+
+  Synopsis    [Recording the results of recent deletion of logic cone.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - May 11, 2006.]
+
+  Revision    [$Id: ivyUndo.c,v 1.00 2006/05/11 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "ivy.h"
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Ivy_ManUndoStart( Ivy_Man_t * p )
+{
+    p->fRecording = 1;
+    p->nUndos = 0;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Ivy_ManUndoStop( Ivy_Man_t * p )
+{
+    p->fRecording = 0;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Ivy_ManUndoRecord( Ivy_Man_t * p, Ivy_Obj_t * pObj )
+{
+    Ivy_Obj_t * pObjUndo;
+    if ( p->nUndos >= p->nUndosAlloc )
+    {
+        printf( "Ivy_ManUndoRecord(): Not enough memory for undo.\n" );
+        return;
+    }
+    pObjUndo = p->pUndos + p->nUndos++;
+    // required data for Ivy_ObjCreateGhost()
+    pObjUndo->Type    = pObj->Type;
+    pObjUndo->Init    = pObj->Init;
+    pObjUndo->Fanin0  = pObj->Fanin0;
+    pObjUndo->Fanin1  = pObj->Fanin1;
+    pObjUndo->fComp0  = pObj->fComp0;
+    pObjUndo->fComp1  = pObj->fComp1;
+    // additional data
+    pObjUndo->Id      = pObj->Id;
+    pObjUndo->nRefs   = pObj->nRefs;
+    pObjUndo->Level   = pObj->Level;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Vec_IntPutLast( Vec_Int_t * vFree, int Last )
+{
+    int Place, i;
+    // find the entry
+    Place = Vec_IntFind( vFree, Last );
+    if ( Place == -1 )
+        return 0;
+    // shift entries by one
+    assert( vFree->pArray[Place] == Last );
+    for ( i = Place; i < Vec_IntSize(vFree) - 1; i++ )
+        vFree->pArray[i] = vFree->pArray[i+1];
+    // put the entry in the end
+    vFree->pArray[i] = Last;
+    return 1;
+}
+
+/**Function*************************************************************
+
+  Synopsis    []
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+void Ivy_ManUndoPerform( Ivy_Man_t * p, Ivy_Obj_t * pRoot )
+{
+    Ivy_Obj_t * pObjUndo, * pObjNew;
+    int i;
+    assert( p->nUndos > 0 );
+    assert( p->fRecording == 0 );
+    for ( i = p->nUndos - 1; i >= 0; i-- )
+    {
+        // get the undo object
+        pObjUndo = p->pUndos + i;
+        // if this is the last object
+        if ( i == 0 )
+            Vec_IntPush( p->vFree, pRoot->Id );
+        else
+            Vec_IntPutLast( p->vFree, pObjUndo->Id );
+        // create the new object
+        pObjNew  = Ivy_ObjCreate( Ivy_ObjCreateGhost2( p, pObjUndo) );
+        pObjNew->nRefs = pObjUndo->nRefs;
+        pObjNew->Level = pObjUndo->Level;
+        // make sure the object is created in the same place as before
+        assert( pObjNew->Id == pObjUndo->Id );
+    }
+    p->nUndos = 0;
+}
+
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+