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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
public struct TList<Element : TSerializable> : RandomAccessCollection, MutableCollection, ExpressibleByArrayLiteral, TSerializable, Hashable {
public typealias Storage = Array<Element>
public typealias Indices = Storage.Indices
internal var storage = Storage()
public init() { }
public init(arrayLiteral elements: Element...) {
self.storage = Storage(elements)
}
public init<Source : Sequence>(_ sequence: Source) where Source.Iterator.Element == Element {
storage = Storage(sequence)
}
/// Mark: Hashable
public var hashValue : Int {
let prime = 31
var result = 1
for element in storage {
result = prime &* result &+ element.hashValue
}
return result
}
/// Mark: TSerializable
public static var thriftType : TType { return .list }
public static func read(from proto: TProtocol) throws -> TList {
let (elementType, size) = try proto.readListBegin()
if elementType != Element.thriftType {
throw TProtocolError(error: .invalidData,
extendedError: .unexpectedType(type: elementType))
}
var list = TList()
for _ in 0..<size {
let element = try Element.read(from: proto)
list.storage.append(element)
}
try proto.readListEnd()
return list
}
public func write(to proto: TProtocol) throws {
try proto.writeListBegin(elementType: Element.thriftType, size: Int32(self.count))
for element in self.storage {
try Element.write(element, to: proto)
}
try proto.writeListEnd()
}
/// Mark: MutableCollection
public typealias SubSequence = Storage.SubSequence
public typealias Index = Storage.Index
public subscript(position: Storage.Index) -> Element {
get {
return storage[position]
}
set {
storage[position] = newValue
}
}
public subscript(range: Range<Index>) -> SubSequence {
get {
return storage[range]
}
set {
storage[range] = newValue
}
}
public var startIndex: Index {
return storage.startIndex
}
public var endIndex: Index {
return storage.endIndex
}
public func formIndex(after i: inout Index) {
storage.formIndex(after: &i)
}
public func formIndex(before i: inout Int) {
storage.formIndex(before: &i)
}
public func index(after i: Index) -> Index {
return storage.index(after: i)
}
public func index(before i: Int) -> Int {
return storage.index(before: i)
}
}
extension TList : RangeReplaceableCollection {
public mutating func replaceSubrange<C: Collection>(_ subrange: Range<Index>, with newElements: C)
where C.Iterator.Element == Element {
storage.replaceSubrange(subrange, with: newElements)
}
}
extension TList : CustomStringConvertible, CustomDebugStringConvertible {
public var description : String {
return storage.description
}
public var debugDescription : String {
return storage.debugDescription
}
}
public func ==<Element>(lhs: TList<Element>, rhs: TList<Element>) -> Bool {
return lhs.storage.elementsEqual(rhs.storage) { $0 == $1 }
}
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