[jni] Upgrade package:jni's ffigen

.github/workflows/ffigen.yml

@@ -58,13 +58,16 @@ jobs:
         with:
           channel: 'stable'
       - name: Install dependencies
-        run: flutter pub get
+        run: flutter pub get && flutter pub get --directory="../jni"
       - name: Install libclang-14-dev
         run: sudo apt-get install libclang-14-dev
       - name: Build test dylib and bindings
         run: dart test/setup.dart
       - name: Run VM tests
         run: dart test
+      - name: Generate package:jni bindings
+        run: dart run tool/generate_ffi_bindings.dart
+        working-directory: pkgs/jni/
 
   # Keep in sync with ffigen_weekly.yaml:test-mac-arm64
   test-mac:
@@ -79,11 +82,18 @@ jobs:
         with:
           channel: 'stable'
       - name: Install dependencies
-        run: flutter pub get && flutter pub get --directory="../objective_c"
+        run: flutter pub get && flutter pub get --directory="../objective_c" && flutter pub get --directory="../jni"
+      - name: Install clang-format
+        uses: ConorMacBride/install-package@3e7ad059e07782ee54fa35f827df52aae0626f30
+        with:
+          brew: clang-format
       - name: Build test dylib and bindings
         run: dart test/setup.dart
       - name: Run VM tests and collect coverage
         run: dart run coverage:test_with_coverage --scope-output=ffigen --scope-output=objective_c
+      - name: Generate package:jni bindings
+        run: dart run tool/generate_ffi_bindings.dart
+        working-directory: pkgs/jni/
       - name: Upload coverage
         uses: coverallsapp/github-action@cfd0633edbd2411b532b808ba7a8b5e04f76d2c8
         with:
@@ -128,11 +138,14 @@ jobs:
         with:
           channel: 'stable'
       - name: Install dependencies
-        run: flutter pub get
+        run: flutter pub get && flutter pub get --directory="../jni"
       - name: Build test dylib and bindings
         run: dart test/setup.dart
       - name: Run VM tests
         run: dart test
+      - name: Generate package:jni bindings
+        run: dart run tool/generate_ffi_bindings.dart
+        working-directory: pkgs/jni/
 
   # Sanity check the latest `flutter create --template plugin_ffi`.
   # This will break if we change the Flutter template or the generated code.

.github/workflows/ffigen_weekly.yml

@@ -32,8 +32,15 @@ jobs:
         with:
           channel: 'stable'
       - name: Install dependencies
-        run: flutter pub get && flutter pub get --directory="../objective_c"
+        run: flutter pub get && flutter pub get --directory="../objective_c" && flutter pub get --directory="../jni"
+      - name: Install clang-format
+        uses: ConorMacBride/install-package@3e7ad059e07782ee54fa35f827df52aae0626f30
+        with:
+          brew: clang-format
       - name: Build test dylib and bindings
         run: dart test/setup.dart --main-thread-dispatcher
       - name: Run VM tests
         run: flutter test
+      - name: Generate package:jni bindings
+        run: dart run tool/generate_ffi_bindings.dart
+        working-directory: pkgs/jni/

pkgs/jni/lib/src/accessors.dart

@@ -62,6 +62,11 @@ extension JniResultMethods on JniResult {
     return value.l;
   }
 
+  JObjectRefType get referenceType {
+    check();
+    return JObjectRefType.fromValue(value.i);
+  }
+
   JReference get reference {
     final pointer = objectPointer;
     return pointer == nullptr ? jNullReference : JGlobalReference(pointer);

pkgs/jni/lib/src/errors.dart

@@ -22,25 +22,24 @@ final class DoubleReleaseError extends StateError {
   DoubleReleaseError() : super('Double release error');
 }
 
-/// Represents JNI errors that might be returned by methods like
-/// `JNI_CreateJavaVM`.
+/// Represents JNI errors that might be returned by methods like `CreateJavaVM`.
 sealed class JniError extends Error {
   static const _errors = {
-    JniErrorCode.JNI_ERR: JniGenericError.new,
-    JniErrorCode.JNI_EDETACHED: JniThreadDetachedError.new,
-    JniErrorCode.JNI_EVERSION: JniVersionError.new,
-    JniErrorCode.JNI_ENOMEM: JniOutOfMemoryError.new,
-    JniErrorCode.JNI_EEXIST: JniVmExistsError.new,
-    JniErrorCode.JNI_EINVAL: JniArgumentError.new,
+    JniErrorCode.ERR: JniGenericError.new,
+    JniErrorCode.EDETACHED: JniThreadDetachedError.new,
+    JniErrorCode.EVERSION: JniVersionError.new,
+    JniErrorCode.ENOMEM: JniOutOfMemoryError.new,
+    JniErrorCode.EEXIST: JniVmExistsError.new,
+    JniErrorCode.EINVAL: JniArgumentError.new,
   };
 
   final String message;
 
   JniError(this.message);
 
-  factory JniError.of(int status) {
+  factory JniError.of(JniErrorCode status) {
     if (!_errors.containsKey(status)) {
-      status = JniErrorCode.JNI_ERR;
+      status = JniErrorCode.ERR;
     }
     return _errors[status]!();
   }

pkgs/jni/lib/src/jni.dart

@@ -85,7 +85,7 @@ abstract final class Jni {
     List<String> jvmOptions = const [],
     List<String> classPath = const [],
     bool ignoreUnrecognized = false,
-    int jniVersion = JniVersions.JNI_VERSION_1_6,
+    JniVersions jniVersion = JniVersions.VERSION_1_6,
   }) {
     final status = spawnIfNotExists(
       dylibDir: dylibDir,
@@ -109,7 +109,7 @@ abstract final class Jni {
     List<String> jvmOptions = const [],
     List<String> classPath = const [],
     bool ignoreUnrecognized = false,
-    int jniVersion = JniVersions.JNI_VERSION_1_6,
+    JniVersions jniVersion = JniVersions.VERSION_1_6,
   }) =>
       using((arena) {
         _dylibDir = dylibDir ?? _dylibDir;
@@ -122,9 +122,9 @@ abstract final class Jni {
           allocator: arena,
         );
         final status = _bindings.SpawnJvm(jvmArgs);
-        if (status == JniErrorCode.JNI_OK) {
+        if (status == JniErrorCode.OK) {
           return true;
-        } else if (status == DART_JNI_SINGLETON_EXISTS) {
+        } else if (status == JniErrorCode.SINGLETON_EXISTS) {
           return false;
         } else {
           throw JniError.of(status);
@@ -136,7 +136,7 @@ abstract final class Jni {
     List<String> classPath = const [],
     String? dylibPath,
     bool ignoreUnrecognized = false,
-    int version = JniVersions.JNI_VERSION_1_6,
+    JniVersions version = JniVersions.VERSION_1_6,
     required Allocator allocator,
   }) {
     final args = allocator<JavaVMInitArgs>();
@@ -163,7 +163,7 @@ abstract final class Jni {
       args.ref.nOptions = count;
     }
     args.ref.ignoreUnrecognized = ignoreUnrecognized ? 1 : 0;
-    args.ref.version = version;
+    args.ref.version = version.value;
     return args;
   }
 
@@ -288,7 +288,7 @@ extension ProtectedJniExtensions on Jni {
   static Dart_FinalizableHandle newJObjectFinalizableHandle(
     Object object,
     Pointer<Void> reference,
-    int refType,
+    JObjectRefType refType,
   ) {
     ensureInitialized();
     return Jni._bindings