ATOOLS/YAML/nodeevents.h

0001 #ifndef NODE_NODEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
0002 #define NODE_NODEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
0003
0004 #if defined(_MSC_VER) ||                                            \
0005     (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
0006      (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
0007 #pragma once
0008 #endif
0009
0010 #include <map>
0011 #include <vector>
0012
0013 #include "ATOOLS/YAML/yaml-cpp/anchor.h"
0014 #include "ATOOLS/YAML/yaml-cpp/node/ptr.h"
0015
0016 namespace SHERPA_YAML {
0017 namespace detail {
0018 class node;
0019 }  // namespace detail
0020 }  // namespace SHERPA_YAML
0021
0022 namespace SHERPA_YAML {
0023 class EventHandler;
0024 class Node;
0025
0026 class NodeEvents {
0027  public:
0028   explicit NodeEvents(const Node& node);
0029   NodeEvents(const NodeEvents&) = delete;
0030   NodeEvents(NodeEvents&&) = delete;
0031   NodeEvents& operator=(const NodeEvents&) = delete;
0032   NodeEvents& operator=(NodeEvents&&) = delete;
0033
0034   void Emit(EventHandler& handler);
0035
0036  private:
0037   class AliasManager {
0038    public:
0039     AliasManager() : m_anchorByIdentity{}, m_curAnchor(0) {}
0040
0041     void RegisterReference(const detail::node& node);
0042     anchor_t LookupAnchor(const detail::node& node) const;
0043
0044    private:
0045     anchor_t _CreateNewAnchor() { return ++m_curAnchor; }
0046
0047    private:
0048     using AnchorByIdentity = std::map<const detail::node_ref*, anchor_t>;
0049     AnchorByIdentity m_anchorByIdentity;
0050
0051     anchor_t m_curAnchor;
0052   };
0053
0054   void Setup(const detail::node& node);
0055   void Emit(const detail::node& node, EventHandler& handler,
0056             AliasManager& am) const;
0057   bool IsAliased(const detail::node& node) const;
0058
0059  private:
0060   detail::shared_memory_holder m_pMemory;
0061   detail::node* m_root;
0062
0063   using RefCount = std::map<const detail::node_ref*, int>;
0064   RefCount m_refCount;
0065 };
0066 }  // namespace SHERPA_YAML
0067
0068 #endif  // NODE_NODEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66