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LibrePilot/flight/libraries/PyMite/vm/lst.c

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/*
# 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.
*/
#undef __FILE_ID__
#define __FILE_ID__ 0x0B
/**
* \file
* \brief List Object Type
*
* List object type operations.
*/
#include "pm.h"
PmReturn_t
list_append(pPmObj_t plist, pPmObj_t pobj)
{
PmReturn_t retval;
uint8_t objid;
C_ASSERT(plist != C_NULL);
C_ASSERT(pobj != C_NULL);
/* If plist is not a list, raise a TypeError exception */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Create new seglist if needed */
if (((pPmList_t)plist)->length == 0)
{
retval = seglist_new(&((pPmList_t)plist)->val);
PM_RETURN_IF_ERROR(retval);
}
/* Append object to list */
heap_gcPushTempRoot((pPmObj_t)((pPmList_t)plist)->val, &objid);
retval = seglist_appendItem(((pPmList_t)plist)->val, pobj);
heap_gcPopTempRoot(objid);
PM_RETURN_IF_ERROR(retval);
/* Increment list length */
((pPmList_t)plist)->length++;
return retval;
}
PmReturn_t
list_getItem(pPmObj_t plist, int16_t index, pPmObj_t *r_pobj)
{
PmReturn_t retval;
/* If it's not a list, raise TypeError */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Adjust the index */
if (index < 0)
{
index += ((pPmList_t)plist)->length;
}
/* Check the bounds of the index */
if ((index < 0) || (index >= ((pPmList_t)plist)->length))
{
PM_RAISE(retval, PM_RET_EX_INDX);
return retval;
}
/* Get item from seglist */
retval = seglist_getItem(((pPmList_t)plist)->val, index, r_pobj);
return retval;
}
PmReturn_t
list_insert(pPmObj_t plist, int16_t index, pPmObj_t pobj)
{
PmReturn_t retval;
int16_t len;
uint8_t objid;
C_ASSERT(plist != C_NULL);
C_ASSERT(pobj != C_NULL);
/* Raise a TypeError if plist is not a List */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
retval = PM_RET_EX_TYPE;
PM_RETURN_IF_ERROR(retval);
}
/* Adjust an out-of-bounds index value */
len = ((pPmList_t)plist)->length;
if (index < 0)
{
index += len;
}
if (index < 0)
{
index = 0;
}
if (index > len)
{
index = len;
}
/* Create new seglist if needed */
if (((pPmList_t)plist)->length == 0)
{
retval = seglist_new(&((pPmList_t)plist)->val);
PM_RETURN_IF_ERROR(retval);
}
/* Insert the item in the container */
heap_gcPushTempRoot((pPmObj_t)((pPmList_t)plist)->val, &objid);
retval = seglist_insertItem(((pPmList_t)plist)->val, pobj, index);
heap_gcPopTempRoot(objid);
PM_RETURN_IF_ERROR(retval);
/* Increment list length */
((pPmList_t)plist)->length++;
return retval;
}
PmReturn_t
list_new(pPmObj_t *r_pobj)
{
PmReturn_t retval = PM_RET_OK;
pPmList_t plist = C_NULL;
/* Allocate a list */
retval = heap_getChunk(sizeof(PmList_t), (uint8_t **)r_pobj);
PM_RETURN_IF_ERROR(retval);
/* Set list type, empty the contents */
plist = (pPmList_t)*r_pobj;
OBJ_SET_TYPE(plist, OBJ_TYPE_LST);
plist->length = 0;
plist->val = C_NULL;
return retval;
}
PmReturn_t
list_copy(pPmObj_t pobj, pPmObj_t *r_pobj)
{
return list_replicate(pobj, 1, r_pobj);
}
PmReturn_t
list_replicate(pPmObj_t psrclist, int16_t n, pPmObj_t *r_pnewlist)
{
PmReturn_t retval = PM_RET_OK;
int16_t i = 0;
int16_t j = 0;
int16_t length = 0;
pPmObj_t pitem = C_NULL;
uint8_t objid;
C_ASSERT(psrclist != C_NULL);
C_ASSERT(r_pnewlist != C_NULL);
/* If first arg is not a list, raise TypeError */
if (OBJ_GET_TYPE(psrclist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
length = ((pPmList_t)psrclist)->length;
/* Allocate new list */
retval = list_new(r_pnewlist);
PM_RETURN_IF_ERROR(retval);
/* Copy srclist the designated number of times */
for (i = n; i > 0; i--)
{
/* Iterate over the length of srclist */
for (j = 0; j < length; j++)
{
retval = list_getItem(psrclist, j, &pitem);
PM_RETURN_IF_ERROR(retval);
heap_gcPushTempRoot(*r_pnewlist, &objid);
retval = list_append(*r_pnewlist, pitem);
heap_gcPopTempRoot(objid);
PM_RETURN_IF_ERROR(retval);
}
}
return retval;
}
PmReturn_t
list_setItem(pPmObj_t plist, int16_t index, pPmObj_t pobj)
{
PmReturn_t retval;
/* If it's not a list, raise TypeError */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Adjust the index */
if (index < 0)
{
index += ((pPmList_t)plist)->length;
}
/* Check the bounds of the index */
if ((index < 0) || (index >= ((pPmList_t)plist)->length))
{
PM_RAISE(retval, PM_RET_EX_INDX);
return retval;
}
/* Set the item */
retval = seglist_setItem(((pPmList_t)plist)->val, pobj, index);
return retval;
}
PmReturn_t
list_remove(pPmObj_t plist, pPmObj_t item)
{
PmReturn_t retval = PM_RET_OK;
uint16_t index;
/* If it's not a list, raise TypeError */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Locate the item to remove */
retval = list_index(plist, item, &index);
PM_RETURN_IF_ERROR(retval);
/* Remove the item and decrement the list length */
retval = seglist_removeItem(((pPmList_t)plist)->val, index);
((pPmList_t)plist)->length--;
/* Unlink seglist if there are no contents */
if (((pPmList_t)plist)->length == 0)
{
((pPmList_t)plist)->val = C_NULL;
}
return retval;
}
PmReturn_t
list_index(pPmObj_t plist, pPmObj_t pitem, uint16_t *r_index)
{
PmReturn_t retval = PM_RET_OK;
pSeglist_t pseglist;
pPmObj_t pobj;
uint16_t index;
/* If it's not a list, raise TypeError */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Raise a ValueError if the list is empty */
if (((pPmList_t)plist)->length == 0)
{
PM_RAISE(retval, PM_RET_EX_VAL);
return retval;
}
pseglist = ((pPmList_t)plist)->val;
/* Iterate over the list's contents */
for (index = 0; index < pseglist->sl_length; index++)
{
retval = seglist_getItem(pseglist, index, &pobj);
PM_RETURN_IF_ERROR(retval);
/* If the list item matches the given item, return the index */
if (obj_compare(pobj, pitem) == C_SAME)
{
*r_index = index;
return PM_RET_OK;
}
}
return PM_RET_EX_VAL;
}
PmReturn_t
list_delItem(pPmObj_t plist, int16_t index)
{
PmReturn_t retval = PM_RET_OK;
/* If it's not a list, raise TypeError */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Adjust the index */
if (index < 0)
{
index += ((pPmList_t)plist)->length;
}
/* Check the bounds of the index */
if ((index < 0) || (index >= ((pPmList_t)plist)->length))
{
PM_RAISE(retval, PM_RET_EX_INDX);
return retval;
}
/* Remove the item and decrement the list length */
retval = seglist_removeItem(((pPmList_t)plist)->val, index);
((pPmList_t)plist)->length--;
/* Unlink seglist if there are no contents */
if (((pPmList_t)plist)->length == 0)
{
((pPmList_t)plist)->val = C_NULL;
}
return retval;
}
#ifdef HAVE_PRINT
PmReturn_t
list_print(pPmObj_t plist)
{
PmReturn_t retval = PM_RET_OK;
int16_t index;
pSeglist_t vals;
pPmObj_t pobj1;
C_ASSERT(plist != C_NULL);
/* If it's not a list, raise TypeError */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
plat_putByte('[');
vals = ((pPmList_t)plist)->val;
/* Iterate over the list's contents */
for (index = 0; index < ((pPmList_t)plist)->length; index++)
{
if (index != 0)
{
plat_putByte(',');
plat_putByte(' ');
}
/* Print each item */
retval = seglist_getItem(vals, index, &pobj1);
PM_RETURN_IF_ERROR(retval);
retval = obj_print(pobj1, C_FALSE, C_TRUE);
PM_RETURN_IF_ERROR(retval);
}
return plat_putByte(']');
}
#endif /* HAVE_PRINT */
PmReturn_t
list_clear(pPmObj_t plist)
{
PmReturn_t retval = PM_RET_OK;
C_ASSERT(plist != C_NULL);
/* Raise TypeError if arg is not a dict */
if (OBJ_GET_TYPE(plist) != OBJ_TYPE_LST)
{
PM_RAISE(retval, PM_RET_EX_TYPE);
return retval;
}
/* Clear length and unlink seglist */
((pPmList_t)plist)->length = 0;
((pPmList_t)plist)->val = C_NULL;
return retval;
}