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PHDataNodeIterator.h
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1 #ifndef PHOOL_PHDATANODEITERATOR_H
2 #define PHOOL_PHDATANODEITERATOR_H
3 
4 #include "PHIODataNode.h"
5 #include "PHNodeIterator.h"
6 
7 #include <cstddef>
8 
20 {
21  public:
24 
26  ~PHDataNodeIterator() override {}
34  template <class T>
36  const char* name);
37 
44  template <class T>
45  PHBoolean AddIODataNode(T* data, const char* name);
46 };
47 
49  : PHNodeIterator(node)
50 {
51 }
52 
53 template <class T>
56  const char* name)
57 {
58  // TODO: also check that "name" is not a null string!
59  if (!name)
60  {
61  return 0;
62  }
63  // Can't do dynamic_cast here; it fails if node was created as
64  // PHIODataNode<X> instead of PHIODataNode<T>, even if T is a
65  // derived class of X!
66  // In general, T -> X does not imply A<T> -> A<X>.
67  // ("->" denotes "derives from", and "A" is any template class)
68  node = static_cast<PHIODataNode<T>*>(findFirst("PHIODataNode",
69  name));
70  return node;
71 }
72 
73 template <class T>
74 PHBoolean
76 {
77  // TODO: also check that "name" is not a null string!
78  if (!name)
79  {
80  return false;
81  }
82  // For IODataNode, ought to check (if possible) that T derives
83  // from TObject. Will typeid() give us this info?
84 
86  if (!n)
87  {
88  return false; // problem creating node?
89  }
90  return addNode(n);
91 }
92 
93 #endif