diff options
| author | Xavier ASUS <xavi92psx@gmail.com> | 2019-10-18 00:31:54 +0200 |
|---|---|---|
| committer | Xavier ASUS <xavi92psx@gmail.com> | 2019-10-18 00:31:54 +0200 |
| commit | 268a53de823a6750d6256ee1fb1e7707b4b45740 (patch) | |
| tree | 42c1799a9a82b2f7d9790ee9fe181d72a7274751 /src/SDCChasht.h | |
| download | sdcc-gas-268a53de823a6750d6256ee1fb1e7707b4b45740.tar.gz | |
sdcc-3.9.0 fork implementing GNU assembler syntax
This fork aims to provide better support for stm8-binutils
Diffstat (limited to 'src/SDCChasht.h')
| -rw-r--r-- | src/SDCChasht.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/SDCChasht.h b/src/SDCChasht.h new file mode 100644 index 0000000..ba7b9cb --- /dev/null +++ b/src/SDCChasht.h @@ -0,0 +1,124 @@ +/*----------------------------------------------------------------- + SDCChast.h - contains support routines for hashtables/sets . + + Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998) + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 2, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + In other words, you are welcome to use, share and improve this program. + You are forbidden to forbid anyone else to use, share and improve + what you give them. Help stamp out software-hoarding! +-------------------------------------------------------------------------*/ + + +#ifndef SDCCHASHT_H +#define SDCCHASHT_H + + + +/* hashtable item */ +typedef struct hashtItem + { + int key; + /* Pointer to the key that was hashed for key. + Used for a hash table with unique keys. */ + void *pkey; + void *item; + struct hashtItem *next; + } +hashtItem; + +/* hashtable */ +typedef struct hTab + { + int size; /* max number of items */ + int minKey; /* minimum key value */ + int maxKey; /* maximum key value */ + hashtItem **table; /* the actual table */ + int currKey; /* used for iteration */ + hashtItem *currItem; /* current item within the list */ + int nItems; + } +hTab; + +typedef enum + { + DELETE_CHAIN = 1, + DELETE_ITEM + } +DELETE_ACTION; + + +/*-----------------------------------------------------------------*/ +/* Forward definition for functions */ +/*-----------------------------------------------------------------*/ + +/* hashtable related functions */ +hTab *newHashTable (int); +void hTabAddItem (hTab **, int key, void *item); +/** Adds a new item to the hash table. + @param h The hash table to add to + @param key A hashed version of pkey + @param pkey A copy of the key. Owned by the + hash table after this function. + @param item Value for this key. +*/ +void hTabAddItemLong (hTab ** h, int key, void *pkey, void *item); +/** Finds a item by exact key. + Searches all items in the key 'key' for a key that + according to 'compare' matches pkey. + @param h The hash table to search + @param key A hashed version of pkey. + @param pkey The key to search for + @param compare Returns 0 if pkey == this +*/ +void *hTabFindByKey (hTab * h, int key, const void *pkey, int (*compare) (const void *, const void *)); +/** Deletes an item with the exact key 'pkey' + @see hTabFindByKey +*/ +int hTabDeleteByKey (hTab ** h, int key, const void *pkey, int (*compare) (const void *, const void *)); + +void hTabDeleteItem (hTab **, int key, + const void *item, DELETE_ACTION action, + int (*compareFunc) (const void *, const void *)); +int hTabIsInTable (hTab *, int, void *, + int (*compareFunc) (void *, void *)); +void *hTabFirstItem (hTab *, int *); +void *hTabNextItem (hTab *, int *); +hTab *hTabFromTable (hTab *); +int isHtabsEqual (hTab *, hTab *, int (*compareFunc) (void *, void *)); +hashtItem *hTabSearch (hTab *, int); + +/* return the first item with the given key */ +void *hTabItemWithKey (hTab *, int); + +void hTabAddItemIfNotP (hTab **, int, void *); +void hTabDeleteAll (hTab *); +void *hTabFirstItemWK (hTab * htab, int wk); +void *hTabNextItemWK (hTab * htab); +void hTabClearAll (hTab * htab); +int hTabMaxKey (hTab *htab); + +/** Find the first item that either is 'item' or which + according to 'compareFunc' is the same as item. + @param compareFunc strcmp like compare function, may be null. +*/ +void *hTabFindItem (hTab * htab, int key, + void *item, int (*compareFunc) (void *, void *)); + +void shash_add (hTab ** h, const char *szKey, const char *szValue); +const char *shash_find (hTab * h, const char *szKey); + +#endif |
