76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
/************************************************************************
|
|
* Copyright (c) 2005-2007 tok@openlinux.org.uk *
|
|
* *
|
|
* This software is provided as-is, without any express or implied *
|
|
* warranty. In no event will the authors be held liable for any *
|
|
* damages arising from the use of this software. *
|
|
* *
|
|
* Permission is granted to anyone to use this software for any purpose, *
|
|
* including commercial applications, and to alter it and redistribute *
|
|
* it freely, subject to the following restrictions: *
|
|
* *
|
|
* 1. The origin of this software must not be misrepresented; you must *
|
|
* not claim that you wrote the original software. If you use this *
|
|
* software in a product, an acknowledgment in the product documentation *
|
|
* would be appreciated but is not required. *
|
|
* *
|
|
* 2. Altered source versions must be plainly marked as such, and must *
|
|
* not be misrepresented as being the original software. *
|
|
* *
|
|
* 3. This notice may not be removed or altered from any source *
|
|
* distribution. *
|
|
************************************************************************/
|
|
#ifndef PREFIX_FREE_TREE_H
|
|
#define PREFIX_FREE_TREE_H
|
|
|
|
#include <string.h>
|
|
#include <map>
|
|
#include <string>
|
|
#include <sstream>
|
|
#include "m_exceptions.h"
|
|
|
|
namespace PrefixFreeTree {
|
|
|
|
struct Node {
|
|
~Node();
|
|
typedef int value_t;
|
|
uint32_t leaf_value;
|
|
typedef std::map<value_t, Node* > MapType;
|
|
MapType map;
|
|
bool isLeaf() const { return (map.size() == 0); }
|
|
Node & insert(const char * str, size_t offset = 0);
|
|
};
|
|
|
|
#define CHECK_HANDLE_LEAF if (curPos->isLeaf()) { Handler<T>::call(curPos->leaf_value); }
|
|
|
|
template <typename T, template <class> class Handler>
|
|
class Walker : public Handler<T>, public Node {
|
|
public:
|
|
Walker() : Handler<T>(), Node(), curPos(this) {}
|
|
|
|
void push(int v) {
|
|
MapType::iterator i = curPos->map.find(v);
|
|
if (i != curPos->map.end()) {
|
|
curPos = i->second;
|
|
CHECK_HANDLE_LEAF;
|
|
}
|
|
else {
|
|
i = map.find(v);
|
|
if (i != map.end()) {
|
|
curPos = i->second;
|
|
CHECK_HANDLE_LEAF;
|
|
}
|
|
else
|
|
curPos = this;
|
|
}
|
|
}
|
|
|
|
private:
|
|
Node * curPos;
|
|
};
|
|
|
|
}
|
|
#undef CHECK_HANDLE_LEAF
|
|
|
|
#endif
|