113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include "cfwobject.h"
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void*
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cfw_new(CFWClass *class, ...)
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{
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CFWObject *obj;
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if ((obj = malloc(class->size)) == NULL)
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return NULL;
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obj->cls = class;
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obj->ref_cnt = 1;
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if (class->ctor != NULL) {
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va_list args;
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va_start(args, class);
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if (!class->ctor(obj, args)) {
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cfw_unref(obj);
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return NULL;
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}
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va_end(args);
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}
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return obj;
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}
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void*
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cfw_ref(void *ptr)
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{
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CFWObject *obj = ptr;
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obj->ref_cnt++;
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return obj;
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}
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void
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cfw_unref(void *ptr)
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{
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CFWObject *obj = ptr;
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if (--obj->ref_cnt == 0)
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cfw_free(obj);
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}
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void
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cfw_free(void *ptr)
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{
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CFWObject *obj = ptr;
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if (obj->cls->dtor != NULL)
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obj->cls->dtor(obj);
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free(obj);
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}
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bool
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cfw_equal(void *ptr1, void *ptr2)
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{
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CFWObject *obj1 = ptr1, *obj2 = ptr2;
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if (obj1->cls->equal != NULL) {
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return obj1->cls->equal(obj1, obj2);
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} else
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return (obj1 == obj2);
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}
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void*
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cfw_copy(void *ptr)
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{
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CFWObject *obj = ptr;
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if (obj->cls->copy != NULL)
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return obj->cls->copy(obj);
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else
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return NULL;
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}
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static CFWClass class = {
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.name = "CFWObject",
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.size = sizeof(CFWObject),
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};
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CFWClass *cfw_object = &class;
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