Support Swift 6/Xcode 16 (#828)

* Support Swift/SourceKit 6
* Update Xcode/Swift versions to test
* Define enough Windows types and objects to make SourceKit happy in testing
* Add a reminder for future test failures

---------

Co-authored-by: John Fairhurst <[email protected]>

Author: SimplyDanny

.bazelrc

@@ -3,3 +3,4 @@ build --macos_minimum_os=12
 build --repo_env=CC=clang
 test --test_output=errors
 test --spawn_strategy=standalone
+test --macos_minimum_os=13

.github/workflows/bazel.yml

@@ -10,7 +10,7 @@ jobs:
   MacOS:
     strategy:
       matrix:
-        xcode_version: ['15.2', '15.3']
+        xcode_version: ['15.3', '15.4', '16.1', '16.2']
     runs-on: macos-14
     steps:
       - uses: actions/checkout@v2
@@ -22,7 +22,7 @@ jobs:
   Linux:
     strategy:
       matrix:
-        tag: ['5.8-focal', '5.9-focal', '5.10-focal']
+        tag: ['5.8-focal', '5.9-focal', '5.10-focal', '6.0-focal']
     runs-on: ubuntu-latest
     container:
       image: swift:${{ matrix.tag }}

.github/workflows/swiftpm.yml

@@ -10,7 +10,7 @@ jobs:
   Xcode:
     strategy:
       matrix:
-        xcode_version: ['14.3.1', '15.2', '15.3']
+        xcode_version: ['15.3', '15.4', '16.1', '16.2']
     runs-on: macos-14
     steps:
       - uses: actions/checkout@v3
@@ -24,7 +24,7 @@ jobs:
   Linux:
     strategy:
       matrix:
-        tag: ['5.8', '5.9', '5.10']
+        tag: ['5.8', '5.9', '5.10', '6.0']
     runs-on: ubuntu-latest
     container:
       image: swift:${{ matrix.tag }}

.github/workflows/xcodebuild.yml

@@ -10,12 +10,12 @@ jobs:
   Xcode:
     strategy:
       matrix:
-        xcode_version: ['14.3.1', '15.2', '15.3']
+        xcode_version: ['15.3', '15.4', '16.1', '16.2']
     runs-on: macos-14
     steps:
       - uses: actions/checkout@v3
       - uses: maxim-lobanov/setup-xcode@v1
         with:
           xcode-version: ${{ matrix.xcode_version }}
       - run: xcodebuild -version
-      - run: xcodebuild -scheme sourcekitten -parallel-testing-enabled NO test -destination platform=macOS
+      - run: xcodebuild -scheme SourceKitten-Package -parallel-testing-enabled NO test -destination platform=macOS

CHANGELOG.md

@@ -13,6 +13,9 @@
   [John Fairhurst](https://github.com/johnfairh)
   [#821]((https://github.com/realm/SourceKitten/issues/821)
 
+* Added new syntax, attribute and declaration kinds introduced in Swift 6.0.  
+  [SimplyDanny](https://github.com/SimplyDanny)
+
 #### Bug Fixes
 
 * None.

Source/SourceKittenFramework/SwiftDeclarationAttributeKind.swift

@@ -201,4 +201,18 @@ public enum SwiftDeclarationAttributeKind: String, CaseIterable {
     case _rawLayout = "source.decl.attribute._rawLayout"
     case _section = "source.decl.attribute._section"
     case _used = "source.decl.attribute._used"
+
+    // Only available in Swift >= 6.0
+    case _extern = "source.decl.attribute._extern"
+    case _resultDependsOnSelf = "source.decl.attribute._resultDependsOnSelf"
+    case _preInverseGenerics = "source.decl.attribute._preInverseGenerics"
+    case implementation = "source.decl.attribute.implementation"
+    case _allowFeatureSuppression = "source.decl.attribute._allowFeatureSuppression"
+    case _noRuntime = "source.decl.attribute._noRuntime"
+    case _staticExclusiveOnly = "source.decl.attribute._staticExclusiveOnly"
+    case extractConstantsFromMembers = "source.decl.attribute.extractConstantsFromMembers"
+    case _unsafeNonescapableResult = "source.decl.attribute._unsafeNonescapableResult"
+    case _noExistentials = "source.decl.attribute._noExistentials"
+    case _noObjCBridging = "source.decl.attribute._noObjCBridging"
+    case _nonescapable = "source.decl.attribute._nonescapable"
 }

Source/SourceKittenFramework/WindowsError.swift

@@ -1,6 +1,19 @@
 #if os(Windows)
 import WinSDK
 
+#if !os(Windows)
+// Shims for !windows SourceKit - see LibraryWrapperGeneratorTests.testLibraryWrappersAreUpToDate
+private typealias WORD = UInt
+private typealias DWORD = WORD
+private typealias WCHAR = WORD
+private let FORMAT_MESSAGE_ALLOCATE_BUFFER = 0
+private let FORMAT_MESSAGE_FROM_SYSTEM = 0
+private let FORMAT_MESSAGE_IGNORE_INSERTS = 0
+
+// swiftlint:disable:next function_parameter_count
+private func FormatMessageW(_ a: DWORD, _ b: Int?, _ c: DWORD, _ d: DWORD, _ e: Any?, _ f: Int, _ g: Int?) -> DWORD { 0 }
+#endif
+
 @_transparent
 internal func MAKELANGID(_ p: WORD, _ s: WORD) -> DWORD {
     return DWORD((s << 10) | p)