| //===------------- SyntaxChildren.swift - Syntax Child Iterator -----------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| import Foundation |
| |
| public struct SyntaxChildren: Sequence { |
| public struct Iterator: IteratorProtocol { |
| var index: Int = 0 |
| let node: Syntax |
| |
| public mutating func next() -> Syntax? { |
| defer { index += 1 } |
| return node.child(at: index) |
| } |
| } |
| let node: Syntax |
| |
| public func makeIterator() -> SyntaxChildren.Iterator { |
| return Iterator(index: 0, node: node) |
| } |
| } |
