CDN_DNS/trie/trie.h

#ifndef TRIE_HEADER_843762518432898246756
#define TRIE_HEADER_843762518432898246756

#include "stdio.h"
#include "stdlib.h"
#include "string.h"

#define VALID_RULE 1
#define INVALID_RULE 0
#define RULE_NOT_FOUND -1

union ipv6 {
    unsigned short s[8];
    unsigned int   i[4];
    unsigned long  l[2];
};

struct trie_node {
    struct trie_node*   _l;
    struct trie_node*   _r;
    int           _rule:31;
    unsigned _rule_valid:1;
};

struct trie_holder {
    struct trie_node* _root;
    size_t _size;
};

typedef struct trie_node*     trie_node_t;
typedef struct trie_holder*   trie_holder_t;
typedef union  ipv6           ipv6_t;
typedef int                   rule_t;

struct trie_holder* create_holder();
struct trie_node* create_node();

int destory_holder(struct trie_holder*);
int destory_node(struct trie_node*);

int trie_insert(struct trie_holder*, ipv6_t key, int val, int mask);
rule_t trie_search(struct trie_holder*, ipv6_t key);


 
#endif