feat! js_interop improvements

thermion_dart/lib/src/bindings/bindings.dart

@@ -0,0 +1,3 @@
+export 'src/ffi.dart'
+    if (dart.library.io) 'src/ffi.dart'     
+    if (dart.library.js_interop) 'src/js_interop.dart';

thermion_dart/lib/src/bindings/src/ffi.dart

@@ -0,0 +1,202 @@
+export 'thermion_dart_ffi.g.dart';
+
+export 'dart:typed_data';
+import 'dart:async';
+import 'dart:io';
+import 'package:thermion_dart/thermion_dart.dart';
+export 'package:ffi/ffi.dart';
+export 'dart:ffi' hide Size;
+
+const FILAMENT_SINGLE_THREADED = false;
+const FILAMENT_WASM = false;
+bool get IS_WINDOWS => Platform.isWindows;
+
+class NativeLibrary {
+  static void initBindings(String name) {
+    throw Exception();
+  }
+}
+
+typedef IntPtrList = Int64List;
+typedef Float64 = Double;
+typedef PointerClass<T extends NativeType> = Pointer<T>;
+typedef VoidPointerClass = Pointer<Void>;
+
+class CallbackHolder<T extends Function> {
+  final NativeCallable<T> nativeCallable;
+
+  Pointer<NativeFunction<T>> get pointer => nativeCallable.nativeFunction;
+
+  CallbackHolder(this.nativeCallable);
+
+  void dispose() {
+    nativeCallable.close();
+  }
+}
+
+Pointer<T> allocate<T extends NativeType>(int count) {
+  return calloc.allocate<T>(count * sizeOf<Pointer>());
+}
+
+void free(Pointer ptr) {
+  calloc.free(ptr);
+}
+
+Pointer stackSave() {
+  throw Exception();
+}
+
+void stackRestore(Pointer ptr) {
+  throw Exception();
+}
+
+class FinalizableUint8List implements Finalizable {
+  final Pointer name;
+  final Uint8List data;
+
+  FinalizableUint8List(this.name, this.data);
+}
+
+extension GPFBP on void Function(int, double, double, double) {
+  CallbackHolder<GizmoPickCallbackFunction> asCallback() {
+    var nativeCallable =
+        NativeCallable<GizmoPickCallbackFunction>.listener(this);
+    return CallbackHolder(nativeCallable);
+  }
+}
+
+CallbackHolder<PickCallbackFunction> makePickCallbackFunctionPointer(
+    DartPickCallbackFunction fn) {
+  final nc = NativeCallable<PickCallbackFunction>.listener(fn);
+  final cbh = CallbackHolder(nc);
+  return cbh;
+}
+
+extension VFB on void Function() {
+  CallbackHolder<Void Function()> asCallback() {
+    var nativeCallable = NativeCallable<Void Function()>.listener(this);
+    return CallbackHolder(nativeCallable);
+  }
+}
+
+extension PCBF on DartPickCallbackFunction {
+  CallbackHolder<PickCallbackFunction> asCallback() {
+    var nativeCallable = NativeCallable<PickCallbackFunction>.listener(this);
+    return CallbackHolder(nativeCallable);
+  }
+}
+
+Future<void> withVoidCallback(
+    Function(Pointer<NativeFunction<Void Function()>>) func) async {
+  final completer = Completer();
+  // ignore: prefer_function_declarations_over_variables
+  void Function() callback = () {
+    completer.complete();
+  };
+  final nativeCallable = NativeCallable<Void Function()>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  nativeCallable.close();
+}
+
+Future<Pointer<T>> withPointerCallback<T extends NativeType>(
+    Function(Pointer<NativeFunction<Void Function(Pointer<T>)>>) func) async {
+  final completer = Completer<Pointer<T>>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(Pointer<NativeType>) callback = (Pointer<NativeType> ptr) {
+    completer.complete(ptr.cast<T>());
+  };
+  final nativeCallable =
+      NativeCallable<Void Function(Pointer<NativeType>)>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  var ptr = await completer.future;
+  nativeCallable.close();
+  return ptr;
+}
+
+Future<bool> withBoolCallback(
+    Function(Pointer<NativeFunction<Void Function(Bool)>>) func) async {
+  final completer = Completer<bool>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(bool) callback = (bool result) {
+    completer.complete(result);
+  };
+  final nativeCallable = NativeCallable<Void Function(Bool)>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  nativeCallable.close();
+  return completer.future;
+}
+
+Future<double> withFloatCallback(
+    Function(Pointer<NativeFunction<Void Function(Float)>>) func) async {
+  final completer = Completer<double>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(double) callback = (double result) {
+    completer.complete(result);
+  };
+  final nativeCallable =
+      NativeCallable<Void Function(Float)>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  nativeCallable.close();
+  return completer.future;
+}
+
+Future<int> withIntCallback(
+    Function(Pointer<NativeFunction<Void Function(Int32)>>) func) async {
+  final completer = Completer<int>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(int) callback = (int result) {
+    completer.complete(result);
+  };
+  final nativeCallable =
+      NativeCallable<Void Function(Int32)>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  nativeCallable.close();
+  return completer.future;
+}
+
+Future<int> withUInt32Callback(
+    Function(Pointer<NativeFunction<Void Function(Uint32)>>) func) async {
+  final completer = Completer<int>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(int) callback = (int result) {
+    completer.complete(result);
+  };
+  final nativeCallable =
+      NativeCallable<Void Function(Uint32)>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  nativeCallable.close();
+  return completer.future;
+}
+
+Future<String> withCharPtrCallback(
+    Function(Pointer<NativeFunction<Void Function(Pointer<Char>)>>)
+        func) async {
+  final completer = Completer<String>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(Pointer<Char>) callback = (Pointer<Char> result) {
+    completer.complete(result.cast<Utf8>().toDartString());
+  };
+  final nativeCallable =
+      NativeCallable<Void Function(Pointer<Char>)>.listener(callback);
+  func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  nativeCallable.close();
+  return completer.future;
+}
+
+extension FreeTypedData<T> on TypedData {
+  void free() {
+    // noop
+  }
+}
+
+extension DartBigIntExtension on int {
+  int get toBigInt {
+    return this;
+  }
+}

thermion_dart/lib/src/bindings/src/js_interop.dart

@@ -0,0 +1,408 @@
+import 'dart:async';
+export 'dart:typed_data';
+
+export 'thermion_dart_js_interop.g.dart';
+export 'dart:js_interop';
+export 'dart:js_interop_unsafe';
+import 'package:thermion_dart/src/bindings/src/js_interop.dart';
+
+const FILAMENT_SINGLE_THREADED = true;
+const FILAMENT_WASM = true;
+const IS_WINDOWS = false;
+
+extension type _NativeLibrary(JSObject _) implements JSObject {
+  static _NativeLibrary get instance =>
+      NativeLibrary.instance as _NativeLibrary;
+
+  external JSUint8Array _emscripten_make_uint8_buffer(
+      Pointer<Uint8> ptr, int length);
+  external JSUint16Array _emscripten_make_uint16_buffer(
+      Pointer<Uint16> ptr, int length);
+  external JSInt16Array _emscripten_make_int16_buffer(
+      Pointer<Int16> ptr, int length);
+  external JSInt32Array _emscripten_make_int32_buffer(
+      Pointer<Int32> ptr, int length);
+  external JSFloat32Array _emscripten_make_f32_buffer(
+      Pointer<Float32> ptr, int length);
+  external JSFloat64Array _emscripten_make_f64_buffer(
+      Pointer<Float64> ptr, int length);
+  external Pointer _emscripten_get_byte_offset(JSObject obj);
+
+  external int _emscripten_stack_get_free();
+
+  external void _execute_queue();
+
+  @JS('stackSave')
+  external Pointer<Void> stackSave();
+
+  @JS('stackRestore')
+  external void stackRestore(Pointer<Void> ptr);
+}
+
+extension FreeTypedData<T> on TypedData {
+  void free() {
+    final ptr = Pointer<Void>(this.offsetInBytes);
+    ptr.free();
+  }
+}
+
+Pointer<T> getPointer<T extends NativeType>(TypedData data, JSObject obj) {
+  late Pointer<T> ptr;
+
+  if (data.lengthInBytes < 32 * 1024) {
+    ptr = stackAlloc(data.lengthInBytes).cast<T>();
+  } else {
+    ptr = malloc<T>(data.lengthInBytes);
+  }
+
+  return ptr;
+}
+
+extension JSBackingBuffer on JSUint8Array {
+  @JS('buffer')
+  external JSObject buffer;
+}
+
+@JS('Uint8Array')
+extension type Uint8ArrayWrapper._(JSObject _) implements JSObject {
+  external Uint8ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+@JS('Int8Array')
+extension type Int8ArrayWrapper._(JSObject _) implements JSObject {
+  external Int8ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+@JS('Uint16Array')
+extension type Uint16ArrayWrapper._(JSObject _) implements JSObject {
+  external Uint16ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+@JS('Int16Array')
+extension type Int16ArrayWrapper._(JSObject _) implements JSObject {
+  external Int16ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+@JS('Uint32Array')
+extension type Uint32ArrayWrapper._(JSObject _) implements JSObject {
+  external Uint32ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+@JS('Int32Array')
+extension type Int32ArrayWrapper._(JSObject _) implements JSObject {
+  external Int32ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+@JS('Float32Array')
+extension type Float32ArrayWrapper._(JSObject _) implements JSObject {
+  external Float32ArrayWrapper(JSObject buffer, int offset, int length);
+}
+@JS('Float64Array')
+extension type Float64ArrayWrapper._(JSObject _) implements JSObject {
+  external Float64ArrayWrapper(JSObject buffer, int offset, int length);
+}
+
+extension Uint8ListExtension on Uint8List {
+  Pointer<Uint8> get address {
+    if (this.lengthInBytes == 0) {
+      return nullptr;
+    }
+    final ptr = getPointer<Uint8>(this, this.toJS);
+    final bar =
+        Uint8ArrayWrapper(NativeLibrary.instance.HEAPU8.buffer, ptr, length)
+            as JSUint8Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+}
+
+extension Float32ListExtension on Float32List {
+  Pointer<Float32> get address {
+    final ptr = getPointer<Float32>(this, this.toJS);
+    final bar =
+        Float32ArrayWrapper(NativeLibrary.instance.HEAPU8.buffer, ptr, length)
+            as JSFloat32Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+}
+
+extension Int16ListExtension on Int16List {
+  Pointer<Int16> get address {
+    if (this.lengthInBytes == 0) {
+      return nullptr;
+    }
+    final ptr = getPointer<Int16>(this, this.toJS);
+    final bar = Int16ArrayWrapper(NativeLibrary.instance.HEAPU8, ptr, length)
+        as JSInt16Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+}
+
+extension Uint16ListExtension on Uint16List {
+  Pointer<Uint16> get address {
+    final ptr = getPointer<Uint16>(this, this.toJS);
+    final bar =
+        Uint16ArrayWrapper(NativeLibrary.instance.HEAPU8.buffer, ptr, length)
+            as JSUint16Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+}
+
+extension UInt32ListExtension on Uint32List {
+  Pointer<Uint32> get address {
+    if (this.lengthInBytes == 0) {
+      return nullptr;
+    }
+    final ptr = getPointer<Uint32>(this, this.toJS);
+    final bar = Uint32ArrayWrapper(NativeLibrary.instance.HEAPU8, ptr, length)
+        as JSUint32Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+}
+
+extension Int32ListExtension on Int32List {
+  Pointer<Int32> get address {
+    if (this.lengthInBytes == 0) {
+      return nullptr;
+    }
+    final ptr = getPointer<Int32>(this, this.toJS);
+    final bar = Int32ArrayWrapper(NativeLibrary.instance.HEAPU8, ptr, length)
+        as JSInt32Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+}
+
+extension Int64ListExtension on Int64List {
+  Pointer<Float32> get address {
+    throw Exception();
+  }
+
+  static Int64List create(int length) {
+    throw Exception();
+  }
+}
+
+extension Float64ListExtension on Float64List {
+  Pointer<Float64> get address {
+    if (this.lengthInBytes == 0) {
+      return nullptr;
+    }
+    final ptr = getPointer<Float64>(this, this.toJS);
+    final bar =
+        Float64ArrayWrapper(NativeLibrary.instance.HEAPU8.buffer, ptr, length)
+            as JSFloat64Array;
+    bar.toDart.setRange(0, length, this);
+    return ptr;
+  }
+
+  // static Float64List create(int length) {
+  //   final ptr = malloc(length * 8);
+  //   final buffer = _NativeLibrary.instance._emscripten_make_f64_buffer(ptr.cast(), length).toDart;
+  //   _allocated.add(buffer);
+  //   return buffer;
+  // }
+}
+
+int sizeOf<T extends NativeType>() {
+  switch (T) {
+    case Float:
+      return 4;
+    default:
+      throw Exception();
+  }
+}
+
+typedef IntPtrList = Int32List;
+typedef Utf8 = Char;
+typedef Float = Float32;
+typedef Double = Float64;
+typedef Bool = bool;
+
+class FinalizableUint8List {
+  final Pointer name;
+  final Uint8List data;
+
+  FinalizableUint8List(this.name, this.data);
+}
+
+class CallbackHolder<T extends Function> {
+  final Pointer<NativeFunction<T>> pointer;
+
+  CallbackHolder(this.pointer);
+
+  void dispose() {
+    pointer.dispose();
+  }
+}
+
+extension DPCF on DartPickCallbackFunction {
+  CallbackHolder<DartPickCallbackFunction> asCallback() {
+    final ptr = addFunction<DartPickCallbackFunction>(this.toJS, "viidddd");
+    final cbh = CallbackHolder(ptr);
+    return cbh;
+  }
+}
+
+extension GPFBP on void Function(int, double, double, double) {
+  CallbackHolder<GizmoPickCallbackFunction> asCallback() {
+    final ptr = addFunction<GizmoPickCallbackFunction>(this.toJS, "viddd");
+    return CallbackHolder(ptr);
+  }
+}
+
+extension VFCB on void Function() {
+  CallbackHolder<void Function()> asCallback() {
+    final ptr = addFunction<void Function()>(this.toJS, "v");
+    return CallbackHolder(ptr);
+  }
+}
+
+final _completers = <int, Completer>{};
+void Function(int) _voidCallback = (int requestId) {
+  _completers[requestId]!.complete();
+  _completers.remove(requestId);
+};
+
+final _voidCallbackPtr = _voidCallback.addFunction();
+
+Future<void> withVoidCallback(
+    Function(Pointer<NativeFunction<Void Function()>>) func) async {
+  final completer = Completer();
+  final requestId = _completers.length;
+  _completers[requestId] = completer;
+
+  final fn = () {
+    completer.complete();
+  };
+
+  final ptr = fn.addFunction();
+
+  func.call(ptr.cast());
+  while (!completer.isCompleted) {
+    _NativeLibrary.instance._execute_queue();
+    await Future.delayed(Duration(milliseconds: 1));
+  }
+  await completer.future;
+}
+
+Future<Pointer<T>> withPointerCallback<T extends NativeType>(
+    Function(Pointer<NativeFunction<Void Function(Pointer<T>)>>) func) async {
+  final completer = Completer<Pointer<T>>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(Pointer<T>) callback = (Pointer<T> ptr) {
+    completer.complete(ptr.cast<T>());
+  };
+
+  final onComplete_interopFnPtr = callback.addFunction();
+
+  func.call(onComplete_interopFnPtr.cast());
+
+  var ptr = await completer.future;
+  onComplete_interopFnPtr.dispose();
+
+  return ptr;
+}
+
+Future<bool> withBoolCallback(
+    Function(Pointer<NativeFunction<Void Function(Bool)>>) func) async {
+  final completer = Completer<bool>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(int) callback = (int result) {
+    completer.complete(result == 1);
+  };
+
+  final onComplete_interopFnPtr = callback.addFunction();
+
+  func.call(onComplete_interopFnPtr.cast());
+  await completer.future;
+
+  return completer.future;
+}
+
+Future<double> withFloatCallback(
+    void Function(Pointer<NativeFunction<void Function(double)>>) func) async {
+  final completer = Completer<double>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(double) callback = (double result) {
+    completer.complete(result);
+  };
+  var ptr = callback.addFunction();
+  func.call(ptr);
+  await completer.future;
+  return completer.future;
+}
+
+Future<int> withIntCallback(
+    Function(Pointer<NativeFunction<Void Function(Int32)>>) func) async {
+  final completer = Completer<int>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(int) callback = (int result) {
+    completer.complete(result);
+  };
+  // final nativeCallable =
+  //     NativeCallable<Void Function(Int32)>.listener(callback);
+  // func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  // nativeCallable.close();
+  return completer.future;
+}
+
+Pointer<T> allocate<T extends NativeType>(int count) {
+  switch (T) {
+    case PointerClass:
+      return malloc(count * 4);
+    default:
+      throw Exception(T.toString());
+  }
+}
+
+Future<int> withUInt32Callback(
+    Function(Pointer<NativeFunction<Void Function(int)>>) func) async {
+  final completer = Completer<int>();
+  // ignore: prefer_function_declarations_over_variables
+  void Function(int) callback = (int result) {
+    completer.complete(result);
+  };
+  // final nativeCallable =
+  //     NativeCallable<Void Function(Uint32)>.listener(callback);
+  // func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  // nativeCallable.close();
+  return completer.future;
+}
+
+Future<String> withCharPtrCallback(
+    Function(Pointer<NativeFunction<Void Function(Pointer<Char>)>>)
+        func) async {
+  final completer = Completer<String>();
+  // ignore: prefer_function_declarations_over_variables
+  // void Function(Pointer<Char>) callback = (Pointer<Char> result) {
+  //   completer.complete(result.cast<Utf8>().toDartString());
+  // };
+  // final nativeCallable =
+  //     NativeCallable<Void Function(Pointer<Char>)>.listener(callback);
+  // func.call(nativeCallable.nativeFunction);
+  await completer.future;
+  // nativeCallable.close();
+  return completer.future;
+}
+
+extension DartBigIntExtension on int {
+  BigInt get toBigInt {
+    return BigInt.from(this);
+  }
+}
+
+Pointer stackSave() => _NativeLibrary.instance.stackSave();
+
+void stackRestore(Pointer ptr) =>
+    _NativeLibrary.instance.stackRestore(ptr.cast());
+
+void getStackFree() {
+  print(_NativeLibrary.instance._emscripten_stack_get_free());
+}