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LibrePilot/flight/Libraries/PyMite/vm/dict.h

126 lines
3.2 KiB
C

/*
# This file is Copyright 2003, 2006, 2007, 2009, 2010 Dean Hall.
#
# This file is part of the PyMite VM.
# The PyMite VM is free software: you can redistribute it and/or modify
# it under the terms of the GNU GENERAL PUBLIC LICENSE Version 2.
#
# The PyMite VM 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.
# A copy of the GNU GENERAL PUBLIC LICENSE Version 2
# is seen in the file COPYING in this directory.
*/
#ifndef __DICT_H__
#define __DICT_H__
/**
* \file
* \brief Dict Object Type
*
* Dict object type header.
*/
/**
* Dict
*
* Contains ptr to two seglists,
* one for keys, the other for values;
* and a length, the number of key/value pairs.
*/
typedef struct PmDict_s
{
/** object descriptor */
PmObjDesc_t od;
/** number of key,value pairs in the dict */
int16_t length;
/** ptr to seglist containing keys */
pSeglist_t d_keys;
/** ptr to seglist containing values */
pSeglist_t d_vals;
} PmDict_t,
*pPmDict_t;
/**
* Clears the contents of a dict.
* after this operation, the dict should in the same state
* as if it were just created using dict_new().
*
* @param pdict ptr to dict to clear.
* @return nothing
*/
PmReturn_t dict_clear(pPmObj_t pdict);
/**
* Gets the value in the dict using the given key.
*
* @param pdict ptr to dict to search
* @param pkey ptr to key obj
* @param r_pobj Return; addr of ptr to obj
* @return Return status
*/
PmReturn_t dict_getItem(pPmObj_t pdict, pPmObj_t pkey, pPmObj_t *r_pobj);
#ifdef HAVE_DEL
/**
* Removes a key and value from the dict.
* Throws TypeError if pdict is not a dict.
* Throws KeyError if pkey does not exist in pdict.
*
* @param pdict Ptr to dict to search
* @param pkey Ptr to key obj
* @return Return status
*/
PmReturn_t dict_delItem(pPmObj_t pdict, pPmObj_t pkey);
#endif /* HAVE_DEL */
/**
* Allocates space for a new Dict.
* Return a pointer to the dict by reference.
*
* @param r_pdict Return; Addr of ptr to dict
* @return Return status
*/
PmReturn_t dict_new(pPmObj_t *r_pdict);
/**
* Sets a value in the dict using the given key.
*
* If the dict already contains a matching key, the value is
* replaced; otherwise the new key,val pair is inserted
* at the front of the dict (for fast lookup).
* In the later case, the length of the dict is incremented.
*
* @param pdict ptr to dict in which (key,val) will go
* @param pkey ptr to key obj
* @param pval ptr to val obj
* @return Return status
*/
PmReturn_t dict_setItem(pPmObj_t pdict, pPmObj_t pkey, pPmObj_t pval);
#ifdef HAVE_PRINT
/**
* Prints out a dict. Uses obj_print() to print elements.
*
* @param pobj Object to print.
* @return Return status
*/
PmReturn_t dict_print(pPmObj_t pdict);
#endif /* HAVE_PRINT */
/**
* Updates the destination dict with the key,value pairs from the source dict
*
* @param pdestdict ptr to destination dict in which key,val pairs will go
* @param psourcedict ptr to source dict which has all key,val pairs to copy
* @return Return status
*/
PmReturn_t dict_update(pPmObj_t pdestdict, pPmObj_t psourcedict);
#endif /* __DICT_H__ */