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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.
41 lines
1.2 KiB
Objective-C
41 lines
1.2 KiB
Objective-C
//
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// ASHashing.h
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// Texture
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//
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// 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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#import <Foundation/Foundation.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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* When std::hash is unavailable, this function will hash a bucket o' bits real fast.
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* The hashing algorithm is copied from CoreFoundation's private function CFHashBytes.
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* https://opensource.apple.com/source/CF/CF-1153.18/CFUtilities.c.auto.html
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*
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* Simple example:
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* CGRect myRect = { ... };
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* ASHashBytes(&myRect, sizeof(myRect));
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*
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* Example:
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* struct {
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* NSUInteger imageHash;
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* CGSize size;
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* } data = {
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* _image.hash,
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* _bounds.size
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* };
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* return ASHashBytes(&data, sizeof(data));
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*
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* @warning: If a struct has padding, any fields that are intiailized in {}
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* will have garbage data for their padding, which will break this hash! Either
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* use `pragma clang diagnostic warning "-Wpadded"` around your struct definition
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* or manually initialize the fields of your struct (`myStruct.x = 7;` etc).
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*/
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AS_EXTERN NSUInteger ASHashBytes(void *bytes, size_t length);
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NS_ASSUME_NONNULL_END
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