public PrgState oneStep(PrgState state)
{
MyIStack <IStmt> stk = state.getExeStack();
try
{
if (stk.empty())
{
throw new Exception("Empty stack");
}
IStmt crtStmt = stk.pop();
PrgState newState = crtStmt.execute(state);
if (flag == 1)
{
this.displayCrtPrgState(newState);
}
//repo.logPrgStateExec();
return(newState);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}