Netease-Music-Demo/Pods/SnapKit/Source/ConstraintLayoutSupportDSL.swift

//
//  SnapKit
//
//  Copyright (c) 2011-Present SnapKit Team - https://github.com/SnapKit
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.

#if os(iOS) || os(tvOS)
    import UIKit
#else
    import AppKit
#endif


@available(iOS 8.0, *)
public struct ConstraintLayoutSupportDSL: ConstraintDSL {
    
    public var target: AnyObject? {
        return self.support
    }
    
    internal let support: ConstraintLayoutSupport
    
    internal init(support: ConstraintLayoutSupport) {
        self.support = support
        
    }
    
    public var top: ConstraintItem {
        return ConstraintItem(target: self.target, attributes: ConstraintAttributes.top)
    }
    
    public var bottom: ConstraintItem {
        return ConstraintItem(target: self.target, attributes: ConstraintAttributes.bottom)
    }
    
    public var height: ConstraintItem {
        return ConstraintItem(target: self.target, attributes: ConstraintAttributes.height)
    }
}