darling-Heimdal/base/number.c
2017-04-20 17:39:51 -07:00

128 lines
3.2 KiB
C

/*
* Copyright (c) 2010 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "baselocl.h"
static void
number_dealloc(void *ptr)
{
}
static int
number_cmp(void *a, void *b)
{
int na, nb;
if (heim_base_is_tagged_object(a))
na = heim_base_tagged_object_value(a);
else
na = *(int *)a;
if (heim_base_is_tagged_object(b))
nb = heim_base_tagged_object_value(b);
else
nb = *(int *)b;
return na - nb;
}
static unsigned long
number_hash(void *ptr)
{
if (heim_base_is_tagged_object(ptr))
return heim_base_tagged_object_value(ptr);
return (unsigned long)*(int *)ptr;
}
struct heim_type_data _heim_number_object = {
HEIM_TID_NUMBER,
"number-object",
NULL,
number_dealloc,
NULL,
number_cmp,
number_hash
};
/**
* Create a number object
*
* @param the number to contain in the object
*
* @return a number object
*/
heim_number_t
heim_number_create(int number)
{
heim_number_t n;
if (number < 0xffffff && number >= 0)
return heim_base_make_tagged_object(number, HEIM_TID_NUMBER);
n = _heim_alloc_object(&_heim_number_object, sizeof(int));
if (n)
*((int *)n) = number;
return n;
}
/**
* Return the type ID of number objects
*
* @return type id of number objects
*/
heim_tid_t
heim_number_get_type_id(void)
{
return HEIM_TID_NUMBER;
}
/**
* Get the int value of the content
*
* @param number the number object to get the value from
*
* @return an int
*/
int
heim_number_get_int(heim_number_t number)
{
if (heim_base_is_tagged_object(number))
return (int)heim_base_tagged_object_value(number);
return *(int *)number;
}