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/*
This source file is part of the Swift.org open source project
Copyright (c) 2021 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 Swift project authors
*/
import Markdown
extension Markup {
/// Returns the first available child range.
///
/// In case a block-level element is rewritten and its range is lost
/// this method would return the first intact, inner range.
/// For example a link might be rewritten and its own range will be lost
/// but the range of the first, nested text element will be preserved
/// so we could still use that to pin a diagnostic.
func firstChildRange() -> Range<SourceLocation>? {
for child in children {
if let range = child.range { return range }
if !child.hasChildren { return nil }
return child.firstChildRange()
}
return nil
}
/// Returns true if the directive contains any children.
var hasChildren: Bool {
return childCount > 0
}
}
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