BlockFillerTool.icc

Go to the documentation of this file.

/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
/**
 * @file D3PDMakerUtils/BlockFillerTool.h
 * @author scott snyder <snyder@bnl.gov>
 * @date Aug, 2009
 * @brief Template definitions for BlockFillerTool.
 */
 
 
namespace D3PD {
 
 
/**
 * @brief Configure during initialization: type-check.
 * @param tree Our parent for tuple making.
 * @param ti Gives the type of the object being passed to @c fillUntyped.
 *
 * @c configureD3PD should check that the type of the object coming as input
 * is compatible with what it expects, and raise an error otherwise.
 */
template <class T>
StatusCode
BlockFillerTool<T>::configureD3PD (IAddVariable* tree,
                                   const std::type_info& ti)
{
  return configureImpl (tree, ti, typeid(T));
}
 
 
/**
 * @brief Fill one block.
 * @param p The input object.
 * @param again Set if this is a subsequent call requested by an AGAIN return
 *
 * This is called once per object.  The type of the object at which @c p
 * points is given by the @c ti argument to @c configureD3PD.  The caller
 * is responsible for arranging that all the pointers for booked variables
 * are set appropriately upon entry.
 *
 * If the return status is the special code @c AGAIN (defined above),
 * then this filler tool wants to make multiple entries.
 * The parent should set up to capture a new `row' and run
 * through the list of block filler
 * tools again, but for this tool call @c fillAgainUntyped
 * instead of @c fillUntyped.  This should be repeated as long
 * as @c fillAgainUntyped returns @c AGAIN.
 *
 * Once @c fillUntyped returns @c AGAIN, the parent should
 * call @c fillUntyped with the same @a p argument and @c again
 * set to @c true.  This continues until @c fillUntyped returns something
 * other than @c AGAIN.
 *
 * Not all parents may support this.  In that case, returning
 * @c AGAIN will be treated as an error.
 */
template <class T>
StatusCode
BlockFillerTool<T>::fillUntyped (const void* p,
                                 bool again /*= false*/)
{
  if (!p) return StatusCode::SUCCESS;
  StatusCode stat = convert (p);
  if (stat.isFailure())
    return stat;
  if (again)
    return fillAgain (*reinterpret_cast<const T*> (p));
  return fill (*reinterpret_cast<const T*> (p));
}
 
 
 
/**
 * @brief Fill one block, after @c AGAIN has been returned (type-safe).
 * @param p The input object.
 *
 * Once @c fill returns @c AGAIN, the parent should
 * call @c fillAgain with the same arguments.
 * This continues until @c fillAgain returns something
 * other than @c AGAIN.
 *
 * By default, this just calls @c fill().
 */
template <class T>
StatusCode BlockFillerTool<T>::fillAgain (const T& p)
{
  return this->fill (p);
}
 
 
} // namespace D3PD