/usr/include/wvstreams/unihashtree.h is in libwvstreams-dev 4.6.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | /* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* UniConf low-level tree storage abstraction.
*/
#ifndef __UNIHASHTREE_H
#define __UNIHASHTREE_H
#include "uniconfkey.h"
#include "wvtr1.h"
#include "wvscatterhash.h"
class UniHashTreeBase;
// parameters: a node (won't be NULL), userdata
typedef wv::function<void(const UniHashTreeBase*,
void*)> UniHashTreeBaseVisitor;
// parameters: 1st node (may be NULL), 2nd node (may be NULL), userdata
typedef wv::function<bool(const UniHashTreeBase*,
const UniHashTreeBase*)> UniHashTreeBaseComparator;
class UniHashTreeBase
{
protected:
struct Accessor
{
static const UniConfKey *get_key(const UniHashTreeBase *obj)
{ return &obj->key(); }
};
typedef WvScatterHash<UniHashTreeBase, UniConfKey, Accessor> Container;
typedef UniHashTreeBaseVisitor BaseVisitor;
typedef UniHashTreeBaseComparator BaseComparator;
public:
~UniHashTreeBase();
/** Returns the key field. */
const UniConfKey &key() const
{ return xkey; }
/** Returns true if the node has children. */
bool haschildren() const;
protected:
UniHashTreeBase(UniHashTreeBase *parent, const UniConfKey &key);
UniConfKey _fullkey(const UniHashTreeBase *ancestor = NULL) const;
UniHashTreeBase *_find(const UniConfKey &key) const;
UniHashTreeBase *_findchild(const UniConfKey &key) const;
static bool _recursivecompare(
const UniHashTreeBase *a, const UniHashTreeBase *b,
const UniHashTreeBaseComparator &comparator);
static void _recursive_unsorted_visit(
const UniHashTreeBase *a,
const UniHashTreeBaseVisitor &visitor, void *userdata,
bool preorder, bool postorder);
UniHashTreeBase *xparent; /*!< the parent of this subtree */
Container *xchildren; /*!< the hash table of children */
private:
void _setparent(UniHashTreeBase *parent);
UniHashTreeBase *_root() const;
/** Called by a child to link itself to this node. */
void link(UniHashTreeBase *node);
/** Called by a child to unlink itself from this node. */
void unlink(UniHashTreeBase *node);
UniConfKey xkey; /*!< the name of this entry */
protected:
class Iter : public Container::Iter
{
public:
Iter(UniHashTreeBase &b) : Container::Iter(*b.xchildren) { }
};
friend class Iter;
};
#endif //__UNIHASHTREE_H
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