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LibrePilot/flight/libraries/PyMite/vm/seq.h

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/*
# This file is Copyright 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 __SEQ_H__
#define __SEQ_H__
/**
* \file
* \brief Sequence Header
*/
/**
* Sequence Iterator Object
*
* Instances of this object are created by GET_ITER and used by FOR_ITER.
* Stores a pointer to a sequence and an index int16_t.
*/
typedef struct PmSeqIter_s
{
/** Object descriptor */
PmObjDesc_t od;
/** Sequence object */
pPmObj_t si_sequence;
/** Index value */
int16_t si_index;
} PmSeqIter_t,
*pPmSeqIter_t;
/**
* Compares two sequences for equality
*
* @param pobj1 Ptr to first sequence.
* @param pobj2 Ptr to second sequence.
* @return C_SAME if the seuqences are equivalent, C_DIFFER otherwise.
*/
int8_t seq_compare(pPmObj_t pobj1, pPmObj_t pobj2);
/**
* Returns the length of the sequence
*
* @param pobj Ptr to sequence.
* @param r_index Return arg, length of sequence
* @return Return status
*/
PmReturn_t seq_getLength(pPmObj_t pobj, int16_t *r_index);
/**
* Returns the object from sequence[index]
*
* @param pobj Ptr to sequence object to get object from
* @param index Int index into the sequence
* @param r_pobj Return arg, object from sequence
* @return Return status
*/
PmReturn_t seq_getSubscript(pPmObj_t pobj, int16_t index, pPmObj_t *r_pobj);
/**
* Returns the next item from the sequence iterator object
*
* @param pobj Ptr to sequence iterator.
* @param r_pitem Return arg, pointer to next item from sequence.
* @return Return status.
*/
PmReturn_t seqiter_getNext(pPmObj_t pobj, pPmObj_t *r_pitem);
/**
* Returns a new sequence iterator object
*
* @param pobj Ptr to sequence.
* @param r_pobj Return by reference, new sequence iterator
* @return Return status.
*/
PmReturn_t seqiter_new(pPmObj_t pobj, pPmObj_t *r_pobj);
#endif /* __SEQ_H__ */