mirror of
https://github.com/firebase/firebase-ios-sdk
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40 lines
1.4 KiB
Objective-C
40 lines
1.4 KiB
Objective-C
/*
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* Copyright 2017 Google
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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 <Foundation/Foundation.h>
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#import "FNode.h"
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/**
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* Applies a merge of a snap for a given interval of paths.
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* Each leaf in the current node which the relative path lies *after* (the
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* optional) start and lies *before or at* (the optional) end will be deleted.
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* Each leaf in snap that lies in the interval will be added to the resulting
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* node. Nodes outside of the range are ignored. nil for start and end are
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* sentinel values that represent -infinity and +infinity respectively (aka
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* includes any path). Priorities of children nodes are treated as leaf children
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* of that node.
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*/
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@interface FRangeMerge : NSObject
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- (instancetype)initWithStart:(FPath *)start
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end:(FPath *)end
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updates:(id<FNode>)updates;
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- (id<FNode>)applyToNode:(id<FNode>)node;
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@end
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