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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
*/
extension Table {
/// The body of a table consisting of zero or more ``Table/Row`` elements.
public struct Body : Markup {
public var _data: _MarkupData
init(_ data: _MarkupData) {
self._data = data
}
init(_ raw: RawMarkup) throws {
guard case .tableBody = raw.data else {
throw RawMarkup.Error.concreteConversionError(from: raw, to: Table.Body.self)
}
let absoluteRaw = AbsoluteRawMarkup(markup: raw, metadata: MarkupMetadata(id: .newRoot(), indexInParent: 0))
self.init(_MarkupData(absoluteRaw))
}
/// The maximum number of columns seen in all rows.
var maxColumnCount: Int {
return children.reduce(0) { (result, row) -> Int in
return max(result, row.childCount)
}
}
}
}
// MARK: - Public API
public extension Table.Body {
/// Create a table body from a sequence of ``Table/Row`` elements.
init<Rows: Sequence>(_ rows: Rows) where Rows.Element == Table.Row {
try! self.init(RawMarkup.tableBody(parsedRange: nil, rows: rows.map { $0.raw.markup }))
}
/// Create a table body from a sequence of ``Table/Row`` elements.
init(_ rows: Table.Row...) {
self.init(rows)
}
/// The rows of the body.
///
/// - Precondition: All children of a `ListItemContainer`
/// must be a `ListItem`.
var rows: LazyMapSequence<MarkupChildren, Table.Row> {
return children.lazy.map { $0 as! Table.Row }
}
/// Replace all list items with a sequence of items.
mutating func setRows<Rows: Sequence>(_ newRows: Rows) where Rows.Element == Table.Row {
replaceRowsInRange(0..<childCount, with: newRows)
}
/// Replace list items in a range with a sequence of items.
mutating func replaceRowsInRange<Rows: Sequence>(_ range: Range<Int>, with incomingRows: Rows) where Rows.Element == Table.Row {
var rawChildren = raw.markup.copyChildren()
rawChildren.replaceSubrange(range, with: incomingRows.map { $0.raw.markup })
let newRaw = raw.markup.withChildren(rawChildren)
_data = _data.replacingSelf(newRaw)
}
/// Append a row to the list.
mutating func appendRow(_ row: Table.Row) {
replaceRowsInRange(childCount..<childCount, with: CollectionOfOne(row))
}
// MARK: Visitation
func accept<V>(_ visitor: inout V) -> V.Result where V : MarkupVisitor {
return visitor.visitTableBody(self)
}
}
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