| Index: third_party/sqlite/ext/fts2/fts2_hash.h
|
| ===================================================================
|
| --- third_party/sqlite/ext/fts2/fts2_hash.h (revision 56608)
|
| +++ third_party/sqlite/ext/fts2/fts2_hash.h (working copy)
|
| @@ -1,110 +0,0 @@
|
| -/*
|
| -** 2001 September 22
|
| -**
|
| -** The author disclaims copyright to this source code. In place of
|
| -** a legal notice, here is a blessing:
|
| -**
|
| -** May you do good and not evil.
|
| -** May you find forgiveness for yourself and forgive others.
|
| -** May you share freely, never taking more than you give.
|
| -**
|
| -*************************************************************************
|
| -** This is the header file for the generic hash-table implemenation
|
| -** used in SQLite. We've modified it slightly to serve as a standalone
|
| -** hash table implementation for the full-text indexing module.
|
| -**
|
| -*/
|
| -#ifndef _FTS2_HASH_H_
|
| -#define _FTS2_HASH_H_
|
| -
|
| -/* Forward declarations of structures. */
|
| -typedef struct fts2Hash fts2Hash;
|
| -typedef struct fts2HashElem fts2HashElem;
|
| -
|
| -/* A complete hash table is an instance of the following structure.
|
| -** The internals of this structure are intended to be opaque -- client
|
| -** code should not attempt to access or modify the fields of this structure
|
| -** directly. Change this structure only by using the routines below.
|
| -** However, many of the "procedures" and "functions" for modifying and
|
| -** accessing this structure are really macros, so we can't really make
|
| -** this structure opaque.
|
| -*/
|
| -struct fts2Hash {
|
| - char keyClass; /* HASH_INT, _POINTER, _STRING, _BINARY */
|
| - char copyKey; /* True if copy of key made on insert */
|
| - int count; /* Number of entries in this table */
|
| - fts2HashElem *first; /* The first element of the array */
|
| - int htsize; /* Number of buckets in the hash table */
|
| - struct _fts2ht { /* the hash table */
|
| - int count; /* Number of entries with this hash */
|
| - fts2HashElem *chain; /* Pointer to first entry with this hash */
|
| - } *ht;
|
| -};
|
| -
|
| -/* Each element in the hash table is an instance of the following
|
| -** structure. All elements are stored on a single doubly-linked list.
|
| -**
|
| -** Again, this structure is intended to be opaque, but it can't really
|
| -** be opaque because it is used by macros.
|
| -*/
|
| -struct fts2HashElem {
|
| - fts2HashElem *next, *prev; /* Next and previous elements in the table */
|
| - void *data; /* Data associated with this element */
|
| - void *pKey; int nKey; /* Key associated with this element */
|
| -};
|
| -
|
| -/*
|
| -** There are 2 different modes of operation for a hash table:
|
| -**
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| -** FTS2_HASH_STRING pKey points to a string that is nKey bytes long
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| -** (including the null-terminator, if any). Case
|
| -** is respected in comparisons.
|
| -**
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| -** FTS2_HASH_BINARY pKey points to binary data nKey bytes long.
|
| -** memcmp() is used to compare keys.
|
| -**
|
| -** A copy of the key is made if the copyKey parameter to fts2HashInit is 1.
|
| -*/
|
| -#define FTS2_HASH_STRING 1
|
| -#define FTS2_HASH_BINARY 2
|
| -
|
| -/*
|
| -** Access routines. To delete, insert a NULL pointer.
|
| -*/
|
| -void sqlite3Fts2HashInit(fts2Hash*, int keytype, int copyKey);
|
| -void *sqlite3Fts2HashInsert(fts2Hash*, const void *pKey, int nKey, void *pData);
|
| -void *sqlite3Fts2HashFind(const fts2Hash*, const void *pKey, int nKey);
|
| -void sqlite3Fts2HashClear(fts2Hash*);
|
| -
|
| -/*
|
| -** Shorthand for the functions above
|
| -*/
|
| -#define fts2HashInit sqlite3Fts2HashInit
|
| -#define fts2HashInsert sqlite3Fts2HashInsert
|
| -#define fts2HashFind sqlite3Fts2HashFind
|
| -#define fts2HashClear sqlite3Fts2HashClear
|
| -
|
| -/*
|
| -** Macros for looping over all elements of a hash table. The idiom is
|
| -** like this:
|
| -**
|
| -** fts2Hash h;
|
| -** fts2HashElem *p;
|
| -** ...
|
| -** for(p=fts2HashFirst(&h); p; p=fts2HashNext(p)){
|
| -** SomeStructure *pData = fts2HashData(p);
|
| -** // do something with pData
|
| -** }
|
| -*/
|
| -#define fts2HashFirst(H) ((H)->first)
|
| -#define fts2HashNext(E) ((E)->next)
|
| -#define fts2HashData(E) ((E)->data)
|
| -#define fts2HashKey(E) ((E)->pKey)
|
| -#define fts2HashKeysize(E) ((E)->nKey)
|
| -
|
| -/*
|
| -** Number of entries in a hash table
|
| -*/
|
| -#define fts2HashCount(H) ((H)->count)
|
| -
|
| -#endif /* _FTS2_HASH_H_ */
|
|
|