mirror of
https://github.com/Tencent/Hippy.git
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52 lines
2.0 KiB
Objective-C
52 lines
2.0 KiB
Objective-C
/*!
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* iOS SDK
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*
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* Tencent is pleased to support the open source community by making
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* Hippy available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company.
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* All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "HippyImageProviderProtocol.h"
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#import "objc/runtime.h"
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#import "HippyBridge.h"
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Class<HippyImageProviderProtocol> imageProviderClassFromBridge(NSData *data, HippyBridge *bridge) {
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NSSet<Class<HippyImageProviderProtocol>> *classes = [bridge imageProviders];
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NSPredicate *predicate = [NSPredicate predicateWithBlock:^BOOL(id _Nullable evaluatedObject, NSDictionary<NSString *, id> *_Nullable bindings) {
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if ([evaluatedObject conformsToProtocol:@protocol(HippyImageProviderProtocol)]) {
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Class<HippyImageProviderProtocol> class = (Class<HippyImageProviderProtocol>)evaluatedObject;
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return [class canHandleData:data];
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} else {
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return NO;
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}
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}];
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NSSet<Class<HippyImageProviderProtocol>> *sub = [classes filteredSetUsingPredicate:predicate];
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Class<HippyImageProviderProtocol> candidate = nil;
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for (Class<HippyImageProviderProtocol> class in sub) {
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if (nil == candidate) {
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candidate = class;
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} else {
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NSUInteger candidatePriority = [candidate priorityForData:data];
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NSUInteger classPriority = [class priorityForData:data];
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if (classPriority > candidatePriority) {
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candidate = class;
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}
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}
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}
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return candidate;
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}
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