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Code Issues 95 Packages Projects Releases 10 Wiki Activity

WIP: Objective-C bridge

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John Estropia
2016-03-16 21:23:41 +09:00
parent d9422f7f2e
commit 21f57518c8
12 changed files with 520 additions and 55 deletions
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126
Sources/Migrating/MigrationChain.swift
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@@ -62,9 +62,7 @@ import CoreData
*/
public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, DictionaryLiteralConvertible, ArrayLiteralConvertible {
// MARK: NilLiteralConvertible
public init(nilLiteral: ()) {
public init() {
self.versionTree = [:]
self.rootVersions = []
@@ -72,10 +70,7 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = true
}
// MARK: StringLiteralConvertible
public init(stringLiteral value: String) {
public init(_ value: String) {
self.versionTree = [:]
self.rootVersions = [value]
@@ -83,32 +78,30 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = true
}
// MARK: ExtendedGraphemeClusterLiteralConvertible
public init(extendedGraphemeClusterLiteral value: String) {
public init<T: CollectionType where T.Generator.Element == String, T.Index: BidirectionalIndexType>(_ elements: T) {
self.versionTree = [:]
self.rootVersions = [value]
self.leafVersions = [value]
self.valid = true
CoreStore.assert(Set(elements).count == Array(elements).count, "\(typeName(MigrationChain))'s migration chain could not be created due to duplicate version strings.")
var lastVersion: String?
var versionTree = [String: String]()
var valid = true
for version in elements {
if let lastVersion = lastVersion,
let _ = versionTree.updateValue(version, forKey: lastVersion) {
valid = false
}
lastVersion = version
}
self.versionTree = versionTree
self.rootVersions = Set([elements.first].flatMap { $0 == nil ? [] : [$0!] })
self.leafVersions = Set([elements.last].flatMap { $0 == nil ? [] : [$0!] })
self.valid = valid
}
// MARK: UnicodeScalarLiteralConvertible
public init(unicodeScalarLiteral value: String) {
self.versionTree = [:]
self.rootVersions = [value]
self.leafVersions = [value]
self.valid = true
}
// MARK: DictionaryLiteralConvertible
public init(dictionaryLiteral elements: (String, String)...) {
public init(_ elements: [(String, String)]) {
var valid = true
var versionTree = [String: String]()
@@ -124,11 +117,9 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
valid = false
}
let leafVersions = Set(
elements.filter { (tuple: (String, String)) -> Bool in
return versionTree[tuple.1] == nil
}.map { $1 }
elements
.filter { versionTree[$1] == nil }
.map { $1 }
)
let isVersionAmbiguous = { (start: String) -> Bool in
@@ -156,30 +147,57 @@ public struct MigrationChain: NilLiteralConvertible, StringLiteralConvertible, D
self.valid = valid && Set(versionTree.keys).union(versionTree.values).filter { isVersionAmbiguous($0) }.count <= 0
}
public init(_ dictionary: [String: String]) {
self.init(dictionary.map { $0 })
}
// MARK: NilLiteralConvertible
public init(nilLiteral: ()) {
self.init()
}
// MARK: StringLiteralConvertible
public init(stringLiteral value: String) {
self.init(value)
}
// MARK: ExtendedGraphemeClusterLiteralConvertible
public init(extendedGraphemeClusterLiteral value: String) {
self.init(value)
}
// MARK: UnicodeScalarLiteralConvertible
public init(unicodeScalarLiteral value: String) {
self.init(value)
}
// MARK: DictionaryLiteralConvertible
public init(dictionaryLiteral elements: (String, String)...) {
self.init(elements)
}
// MARK: ArrayLiteralConvertible
public init(arrayLiteral elements: String...) {
CoreStore.assert(Set(elements).count == elements.count, "\(typeName(MigrationChain))'s migration chain could not be created due to duplicate version strings.")
var lastVersion: String?
var versionTree = [String: String]()
var valid = true
for version in elements {
if let lastVersion = lastVersion,
let _ = versionTree.updateValue(version, forKey: lastVersion) {
valid = false
}
lastVersion = version
}
self.versionTree = versionTree
self.rootVersions = Set([elements.first].flatMap { $0 == nil ? [] : [$0!] })
self.leafVersions = Set([elements.last].flatMap { $0 == nil ? [] : [$0!] })
self.valid = valid
self.init(elements)
}