src/list.c

Sat, 26 Nov 2022 16:58:41 +0100

author
Mike Becker <universe@uap-core.de>
date
Sat, 26 Nov 2022 16:58:41 +0100
changeset 630
ac5e7f789048
parent 628
1e2be40f0cb5
child 640
55cc3b373c5e
permissions
-rw-r--r--

separate iterators and mutating iterators

Trade tons of code duplication for const-correctness.

universe@503 1 /*
universe@503 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@503 3 *
universe@503 4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
universe@503 5 *
universe@503 6 * Redistribution and use in source and binary forms, with or without
universe@503 7 * modification, are permitted provided that the following conditions are met:
universe@503 8 *
universe@503 9 * 1. Redistributions of source code must retain the above copyright
universe@503 10 * notice, this list of conditions and the following disclaimer.
universe@503 11 *
universe@503 12 * 2. Redistributions in binary form must reproduce the above copyright
universe@503 13 * notice, this list of conditions and the following disclaimer in the
universe@503 14 * documentation and/or other materials provided with the distribution.
universe@503 15 *
universe@503 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@503 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@503 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@503 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@503 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@503 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@503 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@503 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@503 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@503 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@503 26 * POSSIBILITY OF SUCH DAMAGE.
universe@503 27 */
universe@503 28
universe@503 29 #include "cx/list.h"
universe@503 30
universe@528 31 void cxListDestroy(CxList *list) {
universe@528 32 switch (list->content_destructor_type) {
universe@528 33 case CX_DESTRUCTOR_SIMPLE: {
universe@528 34 CxIterator iter = cxListBegin(list);
universe@528 35 cx_foreach(void*, elem, iter) {
universe@528 36 list->simple_destructor(elem);
universe@528 37 }
universe@528 38 break;
universe@503 39 }
universe@528 40 case CX_DESTRUCTOR_ADVANCED: {
universe@528 41 CxIterator iter = cxListBegin(list);
universe@528 42 cx_foreach(void*, elem, iter) {
universe@528 43 list->advanced_destructor.func(list->advanced_destructor.data, elem);
universe@528 44 }
universe@528 45 break;
universe@528 46 }
universe@528 47 case CX_DESTRUCTOR_NONE:
universe@528 48 break; // nothing
universe@503 49 }
universe@528 50
universe@524 51 list->cl->destructor(list);
universe@524 52 cxFree(list->allocator, list);
universe@503 53 }
universe@618 54
universe@618 55 int cxListCompare(
universe@618 56 CxList const *list,
universe@618 57 CxList const *other
universe@618 58 ) {
universe@618 59 if (list->cl->compare == other->cl->compare) {
universe@628 60 // same compare function, lists are compatible
universe@618 61 return list->cl->compare(list, other);
universe@618 62 } else {
universe@628 63 // different compare functions, use iterator
universe@618 64 if (list->size == other->size) {
universe@618 65 CxIterator left = cxListBegin(list);
universe@618 66 CxIterator right = cxListBegin(other);
universe@618 67 for (size_t i = 0; i < list->size; i++) {
universe@630 68 void *leftValue = cxIteratorCurrent(left);
universe@630 69 void *rightValue = cxIteratorCurrent(right);
universe@618 70 int d = list->cmpfunc(leftValue, rightValue);
universe@618 71 if (d != 0) {
universe@618 72 return d;
universe@618 73 }
universe@630 74 cxIteratorNext(left);
universe@630 75 cxIteratorNext(right);
universe@618 76 }
universe@618 77 return 0;
universe@618 78 } else {
universe@618 79 return list->size < other->size ? -1 : 1;
universe@618 80 }
universe@618 81 }
universe@618 82 }

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