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#ifndef TREE_H
#define TREE_H
typedef struct _Tree Tree;
typedef struct _TreeNode TreeNode;
typedef struct _TreeIterator TreeIterator;
struct _TreeIterator
{
Tree * tree;
TreeNode * node;
int which;
};
typedef int (*TreeCompareDataFunction)(const void * data1, const void * data2);
typedef void (*TreeFreeDataFunction)(void * data);
Tree * MakeTree(TreeCompareDataFunction compareFunc,
TreeFreeDataFunction freeData);
void SetTreeIteratorToBegin(TreeIterator * iter, Tree * tree);
int IsTreeIteratorAtEnd(const TreeIterator * iter);
void IncrementTreeIterator(TreeIterator * iter);
void * GetDataFromTreeIterator(TreeIterator * iter);
int InsertIntoTree(Tree * tree, void * data);
void DeleteFromTree(Tree * tree, void * data);
#endif
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