adding support for Swift 6.0

Author: leogdion

.devcontainer/swift-6.0/devcontainer.json

@@ -0,0 +1,40 @@
+{
+    "name": "Swift",
+    "image": "swift:6.0",
+    "features": {
+        "ghcr.io/devcontainers/features/common-utils:2": {
+            "installZsh": "false",
+            "username": "vscode",
+            "upgradePackages": "false"
+        },
+        "ghcr.io/devcontainers/features/git:1": {
+            "version": "os-provided",
+            "ppa": "false"
+        }
+    },
+    "postStartCommand": "git config --global --add safe.directory ${containerWorkspaceFolder}",
+    "runArgs": [
+        "--cap-add=SYS_PTRACE",
+        "--security-opt",
+        "seccomp=unconfined"
+    ],
+    // Configure tool-specific properties.
+    "customizations": {
+        // Configure properties specific to VS Code.
+        "vscode": {
+            // Set *default* container specific settings.json values on container create.
+            "settings": {
+                "lldb.library": "/usr/lib/liblldb.so"
+            },
+            // Add the IDs of extensions you want installed when the container is created.
+            "extensions": [
+                "sswg.swift-lang"
+            ]
+        }
+    },
+    // Use 'forwardPorts' to make a list of ports inside the container available locally.
+    // "forwardPorts": [],
+
+    // Set `remoteUser` to `root` to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+    "remoteUser": "root"
+}

.github/workflows/SyntaxKit.yml

@@ -15,6 +15,7 @@ jobs:
       matrix:
         os: [noble, jammy]
         swift:
+          - version: "6.0"
           - version: "6.1"
           - version: "6.1"
             nightly: true

Package.swift

@@ -1,8 +1,80 @@
-// swift-tools-version: 6.1
+// swift-tools-version: 6.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
+// MARK: - Swift Settings Configuration
+
+let swiftSettings: [SwiftSetting] = [
+  // Swift 6.2 Upcoming Features (not yet enabled by default)
+  // SE-0335: Introduce existential `any`
+  .enableUpcomingFeature("ExistentialAny"),
+  // SE-0409: Access-level modifiers on import declarations
+  .enableUpcomingFeature("InternalImportsByDefault"),
+  // SE-0444: Member import visibility (Swift 6.1+)
+  .enableUpcomingFeature("MemberImportVisibility"),
+  // SE-0413: Typed throws
+  .enableUpcomingFeature("FullTypedThrows"),
+
+  // Experimental Features (stable enough for use)
+  // SE-0426: BitwiseCopyable protocol
+  .enableExperimentalFeature("BitwiseCopyable"),
+  // SE-0432: Borrowing and consuming pattern matching for noncopyable types
+  .enableExperimentalFeature("BorrowingSwitch"),
+  // Extension macros
+  .enableExperimentalFeature("ExtensionMacros"),
+  // Freestanding expression macros
+  .enableExperimentalFeature("FreestandingExpressionMacros"),
+  // Init accessors
+  .enableExperimentalFeature("InitAccessors"),
+  // Isolated any types
+  .enableExperimentalFeature("IsolatedAny"),
+  // Move-only classes
+  .enableExperimentalFeature("MoveOnlyClasses"),
+  // Move-only enum deinits
+  .enableExperimentalFeature("MoveOnlyEnumDeinits"),
+  // SE-0429: Partial consumption of noncopyable values
+  .enableExperimentalFeature("MoveOnlyPartialConsumption"),
+  // Move-only resilient types
+  .enableExperimentalFeature("MoveOnlyResilientTypes"),
+  // Move-only tuples
+  .enableExperimentalFeature("MoveOnlyTuples"),
+  // SE-0427: Noncopyable generics
+  .enableExperimentalFeature("NoncopyableGenerics"),
+  // One-way closure parameters
+  // .enableExperimentalFeature("OneWayClosureParameters"),
+  // Raw layout types
+  .enableExperimentalFeature("RawLayout"),
+  // Reference bindings
+  .enableExperimentalFeature("ReferenceBindings"),
+  // SE-0430: sending parameter and result values
+  .enableExperimentalFeature("SendingArgsAndResults"),
+  // Symbol linkage markers
+  .enableExperimentalFeature("SymbolLinkageMarkers"),
+  // Transferring args and results
+  .enableExperimentalFeature("TransferringArgsAndResults"),
+  // SE-0393: Value and Type Parameter Packs
+  .enableExperimentalFeature("VariadicGenerics"),
+  // Warn unsafe reflection
+  .enableExperimentalFeature("WarnUnsafeReflection"),
+
+  // Enhanced compiler checking
+  .unsafeFlags([
+    // Enable concurrency warnings
+    "-warn-concurrency",
+    // Enable actor data race checks
+    "-enable-actor-data-race-checks",
+    // Complete strict concurrency checking
+    "-strict-concurrency=complete",
+    // Enable testing support
+    "-enable-testing",
+    // Warn about functions with >100 lines
+    "-Xfrontend", "-warn-long-function-bodies=100",
+    // Warn about slow type checking expressions
+    "-Xfrontend", "-warn-long-expression-type-checking=100"
+  ])
+]
+
 // swiftlint:disable:next explicit_top_level_acl explicit_acl
 let package = Package(
   name: "SyntaxKit",
@@ -34,15 +106,18 @@ let package = Package(
         .product(name: "SwiftSyntax", package: "swift-syntax"),
         .product(name: "SwiftOperators", package: "swift-syntax"),
         .product(name: "SwiftParser", package: "swift-syntax")
-      ]
+      ],
+      swiftSettings: swiftSettings
     ),
     .executableTarget(
       name: "skit",
-      dependencies: ["SyntaxKit"]
+      dependencies: ["SyntaxKit"],
+      swiftSettings: swiftSettings
     ),
     .testTarget(
       name: "SyntaxKitTests",
-      dependencies: ["SyntaxKit"]
+      dependencies: ["SyntaxKit"],
+      swiftSettings: swiftSettings
     ),
   ]
 )

Sources/SyntaxKit/Attributes/Attribute.swift

@@ -27,7 +27,7 @@
 //  OTHER DEALINGS IN THE SOFTWARE.
 //
 
-import SwiftSyntax
+public import SwiftSyntax
 
 /// Internal representation of a Swift attribute with its arguments.
 internal struct AttributeInfo {

Sources/SyntaxKit/Attributes/Trivia+Comments.swift

@@ -27,7 +27,7 @@
 //  OTHER DEALINGS IN THE SOFTWARE.
 //
 
-import SwiftSyntax
+public import SwiftSyntax
 
 extension Trivia {
   /// Extracts comment strings from the trivia collection.

Sources/SyntaxKit/CodeBlocks/CodeBlock+ExprSyntax.swift

@@ -27,7 +27,7 @@
 //  OTHER DEALINGS IN THE SOFTWARE.
 //
 
-import SwiftSyntax
+public import SwiftSyntax
 
 extension CodeBlock {
   /// Attempts to treat this `CodeBlock` as an expression and return its `ExprSyntax` form.

Sources/SyntaxKit/CodeBlocks/CodeBlock+Generate.swift

@@ -28,7 +28,7 @@
 //
 
 import Foundation
-import SwiftSyntax
+public import SwiftSyntax
 
 extension CodeBlock {
   /// Generates the Swift code for the ``CodeBlock``.

Sources/SyntaxKit/CodeBlocks/CodeBlockItemSyntax.Item.swift

@@ -27,7 +27,7 @@
 //  OTHER DEALINGS IN THE SOFTWARE.
 //
 
-import SwiftSyntax
+public import SwiftSyntax
 
 extension CodeBlockItemSyntax.Item {
   /// Creates a `CodeBlockItemSyntax.Item` from a `SyntaxProtocol`.

Sources/SyntaxKit/CodeBlocks/CommentedCodeBlock.swift

@@ -28,7 +28,7 @@
 //
 
 import Foundation
-import SwiftSyntax
+public import SwiftSyntax
 
 // MARK: - Wrapper `CodeBlock` that injects leading trivia
 

Sources/SyntaxKit/CodeBlocks/EmptyCodeBlock.swift

@@ -28,7 +28,7 @@
 //
 
 import Foundation
-import SwiftSyntax
+public import SwiftSyntax
 
 /// An empty code block that generates no syntax.
 internal struct EmptyCodeBlock: CodeBlock, Sendable, Equatable {