Adds windows swift support (#8622)

Adding support for windows requires the code generations
to add a compiler statement to completely ignore GRPC code
generation on windows

Cleanup the project to use the main Package.swift to run tests
instead of having it separate and includes the imports for GRPC
within it.

Adds windows swift ci

Author: mustiikhalil

.github/workflows/build.yml

@@ -492,10 +492,10 @@ jobs:
        sh phpUnionVectorTest.sh
 
   build-swift:
-    name: Build Swift
+    name: Test Swift
     strategy:
       matrix:
-        swift: ["5.9", "5.10", "6.0"]
+        swift: ["5.9", "5.10", "6.1"]
     # Only 22.04 has swift at the moment https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md?plain=1#L30
     runs-on: ubuntu-22.04
     steps:
@@ -506,13 +506,23 @@ jobs:
     - name: Get swift version
       run: swift --version
     - name: test
-      working-directory: tests/swift/tests
       run: |
         swift build --build-tests
         swift test
 
+  build-swift-windows:
+    name: Test swift windows
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: SwiftyLab/setup-swift@latest
+        with:
+          swift-version: '6.1'
+      - run: swift build
+      - run: swift test
+
   build-swift-wasm:
-    name: Build Swift Wasm
+    name: Test Swift Wasm
     runs-on: ubuntu-24.04
     container:
       image: ghcr.io/swiftwasm/carton:0.20.1

Package.swift

@@ -31,6 +31,7 @@ let package = Package(
       name: "FlexBuffers",
       targets: ["FlexBuffers"]),
   ],
+  dependencies: .dependencies,
   targets: [
     .target(
       name: "FlatBuffers",
@@ -42,6 +43,40 @@ let package = Package(
       path: "swift/Sources/FlexBuffers"),
     .target(
       name: "Common",
-      dependencies: [],
       path: "swift/Sources/Common"),
+    .testTarget(
+      name: "FlatbuffersTests",
+      dependencies: .dependencies,
+      path: "tests/swift/Tests/Flatbuffers"
+    ),
+    .testTarget(
+      name: "FlexbuffersTests",
+      dependencies: ["FlexBuffers"],
+      path: "tests/swift/Tests/Flexbuffers"
+    )
   ])
+
+extension Array where Element == Package.Dependency {
+  static var dependencies: [Package.Dependency] {
+    #if os(Windows)
+    []
+    #else
+    // Test only Dependency
+    [.package(url: "https://github.com/grpc/grpc-swift.git", from: "1.4.1")]
+    #endif
+  }
+}
+
+extension Array where Element == PackageDescription.Target.Dependency {
+  static var dependencies: [PackageDescription.Target.Dependency] {
+    #if os(Windows)
+    ["FlatBuffers"]
+    #else
+    // Test only Dependency
+    [
+      .product(name: "GRPC", package: "grpc-swift"),
+      "FlatBuffers"
+    ]
+    #endif
+  }
+}

grpc/examples/swift/Greeter/Sources/Model/greeter.grpc.swift

@@ -5,6 +5,7 @@
 // swiftlint:disable all
 // swiftformat:disable all
 
+#if !os(Windows)
 import Foundation
 import GRPC
 import NIO
@@ -142,3 +143,5 @@ public protocol models_GreeterServerInterceptorFactoryProtocol {
   func makeSayManyHellosInterceptors() -> [ServerInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
 
 }
+#endif
+

grpc/src/compiler/swift_generator.cc

@@ -394,6 +394,8 @@ grpc::string Generate(grpc_generator::File *file,
   GenerateClientClass(&*printer, &vars);
   printer->Print("\n");
   GenerateServerProtocol(service, &*printer, &vars);
+  printer->Print("\n");
+  printer->Print("#endif\n");
   return output;
 }
 
@@ -409,6 +411,7 @@ grpc::string GenerateHeader() {
   code += "// swiftlint:disable all\n";
   code += "// swiftformat:disable all\n";
   code += "\n";
+  code += "#if !os(Windows)\n";
   code += "import Foundation\n";
   code += "import GRPC\n";
   code += "import NIO\n";

scripts/generate_code.py

@@ -23,7 +23,7 @@
 from util import flatc, root_path, tests_path, args, flatc_path
 
 # Specify the other paths that will be referenced
-swift_code_gen = Path(root_path, "tests/swift/tests/CodeGenerationTests")
+swift_code_gen = Path(root_path, "tests/swift/fuzzer/CodeGenerationTests")
 ts_code_gen = Path(root_path, "tests/ts")
 samples_path = Path(root_path, "samples")
 reflection_path = Path(root_path, "reflection")
@@ -405,7 +405,7 @@ def glob(path, pattern):
 flatc(["--java", "--kotlin"], schema=dictionary_lookup_schema)
 
 # Swift Tests
-swift_prefix = "swift/tests/Tests/FlatBuffers.Test.SwiftTests"
+swift_prefix = "swift/Tests/Flatbuffers"
 flatc(
     SWIFT_OPTS + BASE_OPTS + ["--grpc"],
     schema="monster_test.fbs",

…rs.Test.SwiftTests/ByteBufferTests.swift …/Tests/Flatbuffers/ByteBufferTests.swifttests/swift/tests/Tests/FlatBuffers.Test.SwiftTests/ByteBufferTests.swift renamed to tests/swift/Tests/Flatbuffers/ByteBufferTests.swift tests/swift/tests/Tests/FlatBuffers.Test.SwiftTests/ByteBufferTests.swift renamed to tests/swift/Tests/Flatbuffers/ByteBufferTests.swift

@@ -535,11 +535,10 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     // strips out the nested directories.
     let filePath = URL(filePath: #file)
       .deletingLastPathComponent()
-      .deletingLastPathComponent()
-      .deletingLastPathComponent()
     return filePath.absoluteString
     #else
     return FileManager.default.currentDirectoryPath
+      .appending("/tests/swift/Tests/Flatbuffers")
     #endif
   }