Merge pull request #10 from skiptools/bridgesupport

Additions for bridge support

Sources/SkipLib/BridgeSupport.swift

@@ -0,0 +1,9 @@
+// Copyright 2024 Skip
+//
+// This is free software: you can redistribute and/or modify it
+// under the terms of the GNU Lesser General Public License 3.0
+// as published by the Free Software Foundation https://fsf.org
+
+/// Marker protocol for types that are custom bridged from the Swift side.
+public protocol SwiftCustomBridged {
+}

Tests/SkipLibTests/CodableTests.swift

@@ -0,0 +1,51 @@
+// Copyright 2024 Skip
+//
+// This is free software: you can redistribute and/or modify it
+// under the terms of the GNU Lesser General Public License 3.0
+// as published by the Free Software Foundation https://fsf.org
+import XCTest
+
+final class CodableTests: XCTestCase {
+}
+
+// Just verify that this transpiles into valid code
+enum CodableTestsEnum: Codable {
+    case string(String?)
+    case int(Int?)
+
+    enum RawType: String, Codable {
+        case string
+        case int
+    }
+
+    enum CodingKeys: String, CodingKey {
+        case type
+        case value
+    }
+
+    init(from decoder: any Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        let rawType: RawType = try container.decode(RawType.self, forKey: .type)
+        switch rawType {
+        case .int:
+            self = .int(try container.decodeIfPresent(Int.self, forKey: .value))
+        case .string:
+            self = .string(try container.decodeIfPresent(String.self, forKey: .value))
+        }
+    }
+
+    func encode(to encoder: any Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+
+        let rawType: RawType
+        switch self {
+        case let .string(value):
+            rawType = .string
+            try container.encodeIfPresent(value, forKey: .value)
+        case let .int(value):
+            rawType = .int
+            try container.encodeIfPresent(value, forKey: .value)
+        }
+        try container.encode(rawType, forKey: .type)
+    }
+}