configmgr/source/inc/nodevisitor.hxx

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  30
  31 #ifndef INCLUDED_CONFIGMGR_SOURCE_INC_NODEVISITOR_HXX
  32 #define INCLUDED_CONFIGMGR_SOURCE_INC_NODEVISITOR_HXX
  33
  34 #include "sal/config.h"
  35
  36 namespace configmgr { namespace sharable {
  37     struct GroupNode;
  38     struct SetNode;
  39     struct TreeFragment;
  40     struct ValueNode;
  41     union Node;
  42 } }
  43
  44 namespace configmgr { namespace data {
  45
  46 class NodeVisitor {
  47 public:
  48     virtual ~NodeVisitor() = 0;
  49
  50     bool visitNode(sharable::Node * node);
  51
  52     bool visitChildren(sharable::GroupNode * node);
  53
  54 protected:
  55     virtual bool handle(sharable::Node * node);
  56
  57     virtual bool handle(sharable::ValueNode * node);
  58
  59     virtual bool handle(sharable::GroupNode * node);
  60
  61     virtual bool handle(sharable::SetNode * node);
  62 };
  63
  64 class SetVisitor: public NodeVisitor {
  65 public:
  66     virtual ~SetVisitor() = 0;
  67
  68     bool visitTree(sharable::TreeFragment * tree);
  69
  70     bool visitElements(sharable::SetNode * node);
  71
  72 protected:
  73     using NodeVisitor::handle;
  74
  75     virtual bool handle(sharable::TreeFragment * tree);
  76 };
  77
  78 } }
  79
  80 #endif