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* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses) With permission of the Facebook Open Source team, we are simplifying the Texture license so that clients can rely on the Apache 2 terms that most of Texture is already covered by. This means that code originally forked from AsyncDisplayKit will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a PATENTS file. After getting confirmation that the updates to these core files look good, we'll propagate this new license header to all files (in this same PR) and get sign-off from all parties before landing. * [License] Update all Texture source files to be pure Apache 2. * Changelog entry for Apache 2 license update. * Revert "[License] Update all Texture source files to be pure Apache 2." This reverts commit ffa0fbbba9717d871dd16c4b07539f2f8208fc2b. * [License] Update all Texture source files to be pure Apache 2, maintaining copyrights. * [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
92 lines
2.6 KiB
Objective-C
92 lines
2.6 KiB
Objective-C
//
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// NSIndexSet+ASHelpers.m
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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// UIKit indexPath helpers
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/NSIndexSet+ASHelpers.h>
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@implementation NSIndexSet (ASHelpers)
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- (NSIndexSet *)as_indexesByMapping:(NSUInteger (^)(NSUInteger))block
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{
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NSMutableIndexSet *result = [[NSMutableIndexSet alloc] init];
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[self enumerateRangesUsingBlock:^(NSRange range, BOOL * _Nonnull stop) {
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for (NSUInteger i = range.location; i < NSMaxRange(range); i++) {
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NSUInteger newIndex = block(i);
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if (newIndex != NSNotFound) {
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[result addIndex:newIndex];
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}
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}
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}];
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return result;
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}
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- (NSIndexSet *)as_intersectionWithIndexes:(NSIndexSet *)indexes
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{
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NSMutableIndexSet *result = [[NSMutableIndexSet alloc] init];
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[self enumerateRangesUsingBlock:^(NSRange range, BOOL * _Nonnull stop) {
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[indexes enumerateRangesInRange:range options:kNilOptions usingBlock:^(NSRange range, BOOL * _Nonnull stop) {
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[result addIndexesInRange:range];
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}];
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}];
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return result;
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}
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+ (NSIndexSet *)as_indexSetFromIndexPaths:(NSArray<NSIndexPath *> *)indexPaths inSection:(NSUInteger)section
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{
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NSMutableIndexSet *result = [[NSMutableIndexSet alloc] init];
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for (NSIndexPath *indexPath in indexPaths) {
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if (indexPath.section == section) {
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[result addIndex:indexPath.item];
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}
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}
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return result;
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}
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- (NSUInteger)as_indexChangeByInsertingItemsBelowIndex:(NSUInteger)index
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{
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__block NSUInteger newIndex = index;
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[self enumerateRangesUsingBlock:^(NSRange range, BOOL * _Nonnull stop) {
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for (NSUInteger i = range.location; i < NSMaxRange(range); i++) {
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if (i <= newIndex) {
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newIndex += 1;
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} else {
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*stop = YES;
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}
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}
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}];
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return newIndex - index;
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}
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- (NSString *)as_smallDescription
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{
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NSMutableString *result = [NSMutableString stringWithString:@"{ "];
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[self enumerateRangesUsingBlock:^(NSRange range, BOOL * _Nonnull stop) {
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if (range.length == 1) {
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[result appendFormat:@"%tu ", range.location];
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} else {
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[result appendFormat:@"%tu-%tu ", range.location, NSMaxRange(range) - 1];
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}
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}];
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[result appendString:@"}"];
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return result;
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}
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+ (NSIndexSet *)as_sectionsFromIndexPaths:(NSArray<NSIndexPath *> *)indexPaths
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{
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NSMutableIndexSet *result = [[NSMutableIndexSet alloc] init];
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for (NSIndexPath *indexPath in indexPaths) {
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[result addIndex:indexPath.section];
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}
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return result;
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}
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@end
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