| // Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'dart:ffi'; |
| |
| import 'package:jni/src/jreference.dart'; |
| |
| import '../jni.dart'; |
| import '../jobject.dart'; |
| import '../third_party/generated_bindings.dart'; |
| import '../types.dart'; |
| |
| final class JStringType extends JObjType<JString> { |
| const JStringType(); |
| |
| @override |
| String get signature => "Ljava/lang/String;"; |
| |
| @override |
| JString fromRef(Pointer<Void> ref) => JString.fromRef(ref); |
| |
| @override |
| JObjType get superType => const JObjectType(); |
| |
| @override |
| final int superCount = 1; |
| |
| @override |
| int get hashCode => (JStringType).hashCode; |
| |
| @override |
| bool operator ==(Object other) { |
| return other.runtimeType == JStringType && other is JStringType; |
| } |
| } |
| |
| class JString extends JObject { |
| @override |
| // ignore: overridden_fields |
| late final JObjType<JString> $type = type; |
| |
| /// The type which includes information such as the signature of this class. |
| static const JObjType<JString> type = JStringType(); |
| |
| /// Construct a new [JString] with [reference] as its underlying reference. |
| JString.fromRef(JStringPtr reference) : super.fromRef(reference); |
| |
| /// The number of Unicode characters in this Java string. |
| int get length => Jni.env.GetStringLength(reference.pointer); |
| |
| /// Construct a [JString] from the contents of Dart string [s]. |
| JString.fromString(String s) : super.fromRef(Jni.env.toJStringPtr(s)); |
| |
| /// Returns the contents as a Dart String. |
| /// |
| /// If [releaseOriginal] is true, the underlying reference is deleted |
| /// after conversion and this object will be marked as released. |
| String toDartString({bool releaseOriginal = false}) { |
| reference.ensureNotNull(); |
| final result = Jni.env.toDartString(reference.pointer); |
| if (releaseOriginal) { |
| release(); |
| } |
| return result; |
| } |
| } |
| |
| extension ToJStringMethod on String { |
| /// Returns a [JString] with the contents of this String. |
| JString toJString() { |
| return JString.fromString(this); |
| } |
| } |