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59 lines
1.9 KiB
59 lines
1.9 KiB
// The MIT License (MIT)
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//
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// Copyright (c) 2016 Luke Zhao <me@lkzhao.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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import UIKit
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internal extension Array {
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func get(_ index: Int) -> Element? {
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if index < count {
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return self[index]
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}
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return nil
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}
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}
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internal extension Array where Element: ExprNode {
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func getCGFloat(_ index: Int) -> CGFloat? {
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if let s = get(index) as? NumberNode {
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return CGFloat(s.value)
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}
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return nil
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}
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func getDouble(_ index: Int) -> Double? {
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if let s = get(index) as? NumberNode {
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return Double(s.value)
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}
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return nil
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}
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func getFloat(_ index: Int) -> Float? {
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if let s = get(index) as? NumberNode {
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return s.value
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}
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return nil
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}
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func getBool(_ index: Int) -> Bool? {
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if let s = get(index) as? VariableNode, let f = Bool(s.name) {
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return f
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}
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return nil
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}
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}
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