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2.9 kB · 92 lines
C++
at develop
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#ifndef GECODE_GIST_NODEVISITOR_HH#define GECODE_GIST_NODEVISITOR_HH
namespace Gecode { namespace Gist {
/// \brief Base class for a visitor that runs a cursor over a tree template<class Cursor> class NodeVisitor { protected: /// The cursor Cursor c; public: /// Constructor NodeVisitor(const Cursor& c0); /// Reset the cursor object to \a c0 void setCursor(const Cursor& c0); /// Return the cursor Cursor& getCursor(void); };
/// \brief Run a cursor over a tree, processing nodes in post-order template<class Cursor> class PostorderNodeVisitor : public NodeVisitor<Cursor> { protected: using NodeVisitor<Cursor>::c; /// Move the cursor to the left-most leaf void moveToLeaf(void); public: /// Constructor PostorderNodeVisitor(const Cursor& c); /// Move cursor to next node, return true if succeeded bool next(void); /// Execute visitor void run(void); };
/// \brief Run a cursor over a tree, processing nodes in pre-order template<class Cursor> class PreorderNodeVisitor : public NodeVisitor<Cursor> { protected: using NodeVisitor<Cursor>::c; /// Move cursor to next node from a leaf bool backtrack(void); public: /// Constructor PreorderNodeVisitor(const Cursor& c); /// Move cursor to the next node, return true if succeeded bool next(void); /// Execute visitor void run(void); };
}}
#include <gecode/gist/nodevisitor.hpp>
#endif
// STATISTICS: gist-any