src/list.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2021 Mike Becker, Olaf Wintermann 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 "cx/list.h"

CxList *cxListDestroy(CxList *list) {
    if (list->content_destructor == NULL) {
        if (list->autofree_contents) {
            CxIterator iter = cxListBegin(list);
            cx_foreach(void*, elem, iter) {
                cxFree(list->allocator, elem);
            }
        }
    } else {
        // avoid checking this condition every loop iteration
        if (list->autofree_contents) {
            CxIterator iter = cxListBegin(list);
            cx_foreach(void*, elem, iter) {
                cxFree(list->allocator, list->content_destructor(elem));
            }
        } else {
            CxIterator iter = cxListBegin(list);
            cx_foreach(void*, elem, iter) {
                elem = list->content_destructor(elem);
            }
        }
    }
    if (list->autofree) {
        cxFree(list->allocator, list->list_destructor(list));
        return NULL;
    } else {
        return list->list_destructor(list);
    }
}

void cxListMemoryMgmt(
        CxList *list,
        cx_destructor_func list_destructor,
        cx_destructor_func content_destructor,
        bool list_autofree,
        bool content_autofree
) {
    if (list_destructor != NULL) list->list_destructor = list_destructor;
    list->content_destructor = content_destructor;
    list->autofree = list_autofree;
    list->autofree_contents = content_autofree;
}