107 lines
4.4 KiB
C
107 lines
4.4 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* strpool.h */
|
|
/* */
|
|
/* A string pool */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2003-2008 Ullrich von Bassewitz */
|
|
/* Roemerstrasse 52 */
|
|
/* D-70794 Filderstadt */
|
|
/* EMail: uz@cc65.org */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed 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. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
/* A string pool is used to store identifiers and other strings. Each string
|
|
* stored in the pool has a unique id, which may be used to access the string
|
|
* in the pool. Identical strings are only stored once in the pool and have
|
|
* identical ids. This means that instead of comparing strings, just the
|
|
* string pool ids must be compared.
|
|
*/
|
|
|
|
|
|
|
|
#ifndef STRPOOL_H
|
|
#define STRPOOL_H
|
|
|
|
|
|
|
|
/* common */
|
|
#include "hashtab.h"
|
|
#include "strbuf.h"
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* Data */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
/* Opaque string pool entry */
|
|
typedef struct StringPoolEntry StringPoolEntry;
|
|
|
|
/* A string pool */
|
|
typedef struct StringPool StringPool;
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* Code */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
StringPool* NewStringPool (unsigned HashSlots);
|
|
/* Allocate, initialize and return a new string pool */
|
|
|
|
void FreeStringPool (StringPool* P);
|
|
/* Free a string pool */
|
|
|
|
const StrBuf* SP_Get (const StringPool* P, unsigned Index);
|
|
/* Return a string from the pool. Index must exist, otherwise FAIL is called. */
|
|
|
|
unsigned SP_Add (StringPool* P, const StrBuf* S);
|
|
/* Add a string buffer to the buffer and return the index. If the string does
|
|
* already exist in the pool, SP_AddBuf will just return the index of the
|
|
* existing string.
|
|
*/
|
|
|
|
unsigned SP_AddStr (StringPool* P, const char* S);
|
|
/* Add a string to the buffer and return the index. If the string does already
|
|
* exist in the pool, SP_Add will just return the index of the existing string.
|
|
*/
|
|
|
|
unsigned SP_GetCount (const StringPool* P);
|
|
/* Return the number of strings in the pool */
|
|
|
|
|
|
|
|
/* End of strpool.h */
|
|
|
|
#endif
|
|
|
|
|
|
|