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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 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
//
//===----------------------------------------------------------------------===//
extension Range where Bound == Position {
/// Create a range for a single position.
public init(_ pos: Position) {
self = pos..<pos
}
}
/// An LSP-compatible encoding for `Range<Position>`, for use with `CustomCodable`.
public struct PositionRange: CustomCodableWrapper {
public var wrappedValue: Range<Position>
public init(wrappedValue: Range<Position>) {
self.wrappedValue = wrappedValue
}
fileprivate enum CodingKeys: String, CodingKey {
case lowerBound = "start"
case upperBound = "end"
}
public init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
let lhs = try container.decode(Position.self, forKey: .lowerBound)
let rhs = try container.decode(Position.self, forKey: .upperBound)
self.wrappedValue = lhs..<rhs
}
public func encode(to encoder: Encoder) throws {
var container = encoder.container(keyedBy: CodingKeys.self)
try container.encode(wrappedValue.lowerBound, forKey: .lowerBound)
try container.encode(wrappedValue.upperBound, forKey: .upperBound)
}
}
/// An LSP-compatible encoding for `Array<Range<Position>>`, for use with `CustomCodable`.
public struct PositionRangeArray: CustomCodableWrapper {
public var wrappedValue: [Range<Position>]
public init(wrappedValue: [Range<Position>]) {
self.wrappedValue = wrappedValue
}
public init(from decoder: Decoder) throws {
var values: [Range<Position>] = []
var arrayContainer = try decoder.unkeyedContainer()
values.reserveCapacity(arrayContainer.count ?? 1)
while !arrayContainer.isAtEnd {
let range = try arrayContainer.decode(PositionRange.self)
values.append(range.wrappedValue)
}
self.wrappedValue = values
}
public func encode(to encoder: Encoder) throws {
var arrayContainer = encoder.unkeyedContainer()
for rangeValue in wrappedValue {
try arrayContainer.encode(PositionRange(wrappedValue: rangeValue))
}
}
}
extension Range: LSPAnyCodable where Bound == Position {
public init?(fromLSPDictionary dictionary: [String: LSPAny]) {
guard case .dictionary(let start)? = dictionary[PositionRange.CodingKeys.lowerBound.stringValue],
let startPosition = Position(fromLSPDictionary: start),
case .dictionary(let end)? = dictionary[PositionRange.CodingKeys.upperBound.stringValue],
let endPosition = Position(fromLSPDictionary: end)
else {
return nil
}
self = startPosition..<endPosition
}
public func encodeToLSPAny() -> LSPAny {
return .dictionary([
PositionRange.CodingKeys.lowerBound.stringValue: lowerBound.encodeToLSPAny(),
PositionRange.CodingKeys.upperBound.stringValue: upperBound.encodeToLSPAny(),
])
}
}
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