b3dd4516ca
The former is needed for the KDDW flutter frontend, which will use the latter to access the C++ API. Using two packages instead of one, since one is generated by dartagnan.
89 lines
3.4 KiB
Dart
89 lines
3.4 KiB
Dart
/*
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This file is part of KDDockWidgets.
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SPDX-FileCopyrightText: 2019-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
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Author: Sérgio Martins <sergio.martins@kdab.com>
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SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
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Contact KDAB at <info@kdab.com> for commercial licensing options.
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*/
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/*
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Copyright 2020, the Dart project authors.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// File copied from https://github.com/mraleph/dartvm_api_vs_ffi.git
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// commit d634ca401ced4a
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// Adjusted for null safety
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import 'dart:ffi' as ffi;
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import 'package:ffi/ffi.dart';
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typedef Dart_WeakPersistentHandleFinalizer_Type = ffi.Void Function(
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ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>);
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typedef Dart_NewWeakPersistentHandle_Type = ffi.Pointer<ffi.Void> Function(
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ffi.Handle,
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ffi.Pointer<ffi.Void>,
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ffi.IntPtr,
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ffi.Pointer<ffi.NativeFunction<Dart_WeakPersistentHandleFinalizer_Type>>);
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typedef Dart_NewWeakPersistentHandle_DartType = ffi.Pointer<ffi.Void> Function(
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Object,
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ffi.Pointer<ffi.Void>,
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int,
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ffi.Pointer<ffi.NativeFunction<Dart_WeakPersistentHandleFinalizer_Type>>);
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class _DartEntry extends ffi.Struct {
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ffi.Pointer<ffi.Int8>? name;
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ffi.Pointer<ffi.Void>? function;
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}
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class _DartApi extends ffi.Struct {
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@ffi.Int32()
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int? major;
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@ffi.Int32()
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int? minor;
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ffi.Pointer<_DartEntry>? functions;
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}
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final newWeakPersistentHandle = () {
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final ffi.Pointer<_DartApi> dlapi = ffi.NativeApi.initializeApiDLData.cast();
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for (int i = 0;
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dlapi.ref.functions?.elementAt(i).ref.name != ffi.nullptr;
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i++) {
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final name = dlapi.ref.functions?.elementAt(i).ref.name?.cast<Utf8>();
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if (name?.toDartString() == 'Dart_NewWeakPersistentHandle') {
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var func = dlapi.ref.functions?.elementAt(i).ref.function;
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if (func != null)
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return func
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.cast<ffi.NativeFunction<Dart_NewWeakPersistentHandle_Type>>()
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.asFunction<Dart_NewWeakPersistentHandle_DartType>();
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}
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}
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}();
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