Merge pull request #2 from Ryu0118/feature/hashable

Conformance to Hashable

Package.swift

@@ -22,7 +22,7 @@ let package = Package(
     ],
     dependencies: [
         // Depend on the Swift 5.9 release of SwiftSyntax
-        .package(url: "https://github.com/apple/swift-syntax.git", "508.0.0"..<"510.0.0"),
+        .package(url: "https://github.com/apple/swift-syntax.git", "509.0.0"..<"510.0.0"),
         .package(url: "https://github.com/apple/swift-testing.git", from: "0.1.0"),
         .package(url: "https://github.com/pointfreeco/swift-macro-testing", from: "0.2.1")
     ],

README.md

@@ -129,5 +129,5 @@ The Codable conformance means that TypedDate instances can be easily encoded to
 
 ## Installation
 ```Swift
-.package(url: "https://github.com/Ryu0118/swift-typed-date", exact: "0.2.0")
+.package(url: "https://github.com/Ryu0118/swift-typed-date", exact: "0.3.0")
 ```

Sources/TypedDate/TypedDate+Hashable.swift

@@ -0,0 +1,31 @@
+import Foundation
+
+extension TypedDate: Hashable {
+    public func hash(into hasher: inout Hasher) {
+        hasher.combine(date)
+        switch Components.self {
+        case is (Year).Type:
+            hasher.combine(1)
+
+        case is (Year, Month).Type:
+            hasher.combine(2)
+
+        case is (Year, Month, Day).Type:
+            hasher.combine(3)
+
+        case is (Year, Month, Day, Hour).Type:
+            hasher.combine(4)
+
+        case is (Year, Month, Day, Hour, Minute).Type:
+            hasher.combine(5)
+
+        case is (Year, Month, Day, Hour, Minute, Second).Type:
+            hasher.combine(6)
+
+        case is (Year, Month, Day, Hour, Minute, Second, Nanosecond).Type:
+            hasher.combine(6)
+
+        default: hasher.combine(7)
+        }
+    }
+}