pythonnet/src/runtime/PythonTypes/PyObject.cs at master · macaronikazoo/pythonnet · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Dynamic;

using System.Linq;

using System.Linq.Expressions;

using System.Runtime.Serialization;

using System.Threading;

namespace Python.Runtime

{

/// <summary>

/// Represents a generic Python object. The methods of this class are

/// generally equivalent to the Python "abstract object API". See

/// PY2: https://docs.python.org/2/c-api/object.html

/// PY3: https://docs.python.org/3/c-api/object.html

/// for details.

/// </summary>

[Serializable]

[DebuggerDisplay("{" + nameof(DebuggerDisplay) + ",nq}")]

public partial class PyObject : DynamicObject, IDisposable, ISerializable

{

#if TRACE_ALLOC

/// <summary>

/// Trace stack for PyObject's construction

/// </summary>

public StackTrace Traceback { get; } = new StackTrace(1);

#endif

protected IntPtr rawPtr = IntPtr.Zero;

internal readonly int run = Runtime.GetRun();

internal BorrowedReference obj => new (rawPtr);

public static PyObject None => new (Runtime.PyNone);

internal BorrowedReference Reference => new (rawPtr);

/// <summary>

/// PyObject Constructor

/// </summary>

/// <remarks>

/// Creates a new PyObject from an IntPtr object reference. Note that

/// the PyObject instance assumes ownership of the object reference

/// and the reference will be DECREFed when the PyObject is garbage

/// collected or explicitly disposed.

/// </remarks>

[Obsolete]

internal PyObject(IntPtr ptr)

{

if (ptr == IntPtr.Zero) throw new ArgumentNullException(nameof(ptr));

rawPtr = ptr;

Finalizer.Instance.ThrottledCollect();

}

[Obsolete("for testing purposes only")]

internal PyObject(IntPtr ptr, bool skipCollect)

{

if (ptr == IntPtr.Zero) throw new ArgumentNullException(nameof(ptr));

rawPtr = ptr;

if (!skipCollect)

Finalizer.Instance.ThrottledCollect();

}

/// <summary>

/// Creates new <see cref="PyObject"/> pointing to the same object as

/// the <paramref name="reference"/>. Increments refcount, allowing <see cref="PyObject"/>

/// to have ownership over its own reference.

/// </summary>

internal PyObject(BorrowedReference reference)

{

if (reference.IsNull) throw new ArgumentNullException(nameof(reference));

rawPtr = new NewReference(reference).DangerousMoveToPointer();

Finalizer.Instance.ThrottledCollect();

}

internal PyObject(BorrowedReference reference, bool skipCollect)

{

if (reference.IsNull) throw new ArgumentNullException(nameof(reference));

rawPtr = new NewReference(reference).DangerousMoveToPointer();

if (!skipCollect)

Finalizer.Instance.ThrottledCollect();

}

internal PyObject(in StolenReference reference)

{

if (reference == null) throw new ArgumentNullException(nameof(reference));

rawPtr = reference.DangerousGetAddressOrNull();

Finalizer.Instance.ThrottledCollect();

}

/// <summary>

/// Create a new PyObject instance of this object, bumping the reference

/// count.

/// </summary>

public PyObject NewReference() => new(this);

// Ensure that encapsulated Python object is decref'ed appropriately

// when the managed wrapper is garbage-collected.

~PyObject()

{

if (!IsDisposed)

{

#if TRACE_ALLOC

CheckRun();

#endif

// Drop the reference if Python is tearing down; queued Py_DecRef would crash.

if (Runtime._Py_IsFinalizing() == true)

{

rawPtr = IntPtr.Zero;

}

else

{

Interlocked.Increment(ref Runtime._collected);

Finalizer.Instance.AddFinalizedObject(ref rawPtr, run

#if TRACE_ALLOC

, Traceback

#endif

);

}

Dispose(false);

}

/// <summary>

/// Gets the native handle of the underlying Python object. This

/// value is generally for internal use by the PythonNet runtime.

/// </summary>

[Obsolete]

public IntPtr Handle

{

get { return rawPtr; }

}

/// <summary>

/// Gets raw Python proxy for this object (bypasses all conversions,

/// except <c>null</c> <==> <c>None</c>)

/// </summary>

/// <remarks>

/// Given an arbitrary managed object, return a Python instance that

/// reflects the managed object.

/// </remarks>

public static PyObject FromManagedObject(object ob)

{

// Special case: if ob is null, we return None.

if (ob == null)

{

return new PyObject(Runtime.PyNone);

}

return CLRObject.GetReference(ob).MoveToPyObject();

}

/// <summary>

/// Creates new <see cref="PyObject"/> from a nullable reference.

/// When <paramref name="reference"/> is <c>null</c>, <c>null</c> is returned.

/// </summary>

internal static PyObject? FromNullableReference(BorrowedReference reference)

=> reference.IsNull ? null : new PyObject(reference);

/// <summary>

/// AsManagedObject Method

/// </summary>

/// <remarks>

/// Return a managed object of the given type, based on the

/// value of the Python object.

/// </remarks>

public object? AsManagedObject(Type t)

{

if (!Converter.ToManaged(obj, t, out var result, true))

{

throw new InvalidCastException("cannot convert object to target type",

PythonException.FetchCurrentOrNull(out _));

}

return result;

}

/// <summary>

/// Return a managed object of the given type, based on the

/// value of the Python object.

/// </summary>

public T As<T>() => (T)this.AsManagedObject(typeof(T))!;

internal bool IsDisposed => rawPtr == IntPtr.Zero;

void CheckDisposed()

{

if (IsDisposed) throw new ObjectDisposedException(nameof(PyObject));

}

protected virtual void Dispose(bool disposing)

{

if (IsDisposed)

{

return;

}

if (Runtime.Py_IsInitialized() == 0 && Runtime._Py_IsFinalizing() != true)

{

throw new InvalidOperationException("Python runtime must be initialized");

}

nint refcount = Runtime.Refcount(this.obj);

Debug.Assert(refcount > 0, "Object refcount is 0 or less");

if (refcount == 1)

{

Runtime.PyErr_Fetch(out var errType, out var errVal, out var traceback);

try

{

Runtime.XDecref(StolenReference.Take(ref rawPtr));

Runtime.CheckExceptionOccurred();

}

finally

{

// Python requires finalizers to preserve exception:

// https://docs.python.org/3/extending/newtypes.html#finalization-and-de-allocation

Runtime.PyErr_Restore(errType.StealNullable(), errVal.StealNullable(), traceback.StealNullable());

}

else

{

Runtime.XDecref(StolenReference.Take(ref rawPtr));

}

this.rawPtr = IntPtr.Zero;

}

/// <summary>

/// The Dispose method provides a way to explicitly release the

/// Python object represented by a PyObject instance. It is a good

/// idea to call Dispose on PyObjects that wrap resources that are

/// limited or need strict lifetime control. Otherwise, references

/// to Python objects will not be released until a managed garbage

/// collection occurs.

/// </summary>

public void Dispose()

{

GC.SuppressFinalize(this);

Dispose(true);

}

internal StolenReference Steal()

{

GC.SuppressFinalize(this);

return StolenReference.Take(ref this.rawPtr);

}

[Obsolete("Test use only")]

internal void Leak()

{

Debug.Assert(!IsDisposed);

GC.SuppressFinalize(this);

rawPtr = IntPtr.Zero;

}

internal IntPtr DangerousGetAddressOrNull() => rawPtr;

internal void CheckRun()

{

if (run != Runtime.GetRun())

throw new RuntimeShutdownException(rawPtr);

}

internal BorrowedReference GetPythonTypeReference()

=> Runtime.PyObject_TYPE(obj);

/// <summary>

/// GetPythonType Method

/// </summary>

/// <remarks>

/// Returns the Python type of the object. This method is equivalent

/// to the Python expression: type(object).

/// </remarks>

public PyType GetPythonType()

{

var tp = Runtime.PyObject_Type(Reference);

return new PyType(tp.StealOrThrow(), prevalidated: true);

}

/// <summary>

/// TypeCheck Method

/// </summary>

/// <remarks>

/// Returns true if the object o is of type typeOrClass or a subtype

/// of typeOrClass.

/// </remarks>

public bool TypeCheck(PyType typeOrClass)

{

if (typeOrClass == null) throw new ArgumentNullException(nameof(typeOrClass));

return Runtime.PyObject_TypeCheck(obj, typeOrClass.obj);

}

internal PyType PyType => this.GetPythonType();

/// <summary>

/// HasAttr Method

/// </summary>

/// <remarks>

/// Returns true if the object has an attribute with the given name.

/// </remarks>

public bool HasAttr(string name)

{

if (name == null) throw new ArgumentNullException(nameof(name));

return Runtime.PyObject_HasAttrString(Reference, name) != 0;

}

/// <summary>

/// HasAttr Method

/// </summary>

/// <remarks>

/// Returns true if the object has an attribute with the given name,

/// where name is a PyObject wrapping a string or unicode object.

/// </remarks>

public bool HasAttr(PyObject name)

{

if (name == null) throw new ArgumentNullException(nameof(name));

return Runtime.PyObject_HasAttr(Reference, name.Reference) != 0;

}

/// <summary>

/// GetAttr Method

/// </summary>

/// <remarks>

/// Returns the named attribute of the Python object, or raises a

/// PythonException if the attribute access fails.

/// </remarks>

public PyObject GetAttr(string name)

{

if (name == null) throw new ArgumentNullException(nameof(name));

using var op = Runtime.PyObject_GetAttrString(obj, name);

return new PyObject(op.StealOrThrow());

}

/// <summary>

/// Returns the named attribute of the Python object, or the given

/// default object if the attribute access throws AttributeError.

/// </summary>

/// <remarks>

/// This method ignores any AttrubiteError(s), even ones

/// not raised due to missing requested attribute.

///

/// For example, if attribute getter calls other Python code, and

/// that code happens to cause AttributeError elsewhere, it will be ignored

/// and <paramref name="_default"/> value will be returned instead.

/// </remarks>

/// <param name="name">Name of the attribute.</param>

/// <param name="_default">The object to return on AttributeError.</param>

[Obsolete("See remarks")]

public PyObject GetAttr(string name, PyObject _default)

{

if (name == null) throw new ArgumentNullException(nameof(name));

using var op = Runtime.PyObject_GetAttrString(obj, name);

if (op.IsNull())

{

if (Exceptions.ExceptionMatches(Exceptions.AttributeError))

{

Runtime.PyErr_Clear();

return _default;

}

else

{

throw PythonException.ThrowLastAsClrException();

}

return new PyObject(op.Steal());

}

/// <summary>

/// GetAttr Method

/// </summary>

/// <remarks>

/// Returns the named attribute of the Python object or raises a

/// PythonException if the attribute access fails. The name argument

/// is a PyObject wrapping a Python string or unicode object.

/// </remarks>

public PyObject GetAttr(PyObject name)

{

if (name == null) throw new ArgumentNullException(nameof(name));

using var op = Runtime.PyObject_GetAttr(obj, name.obj);

return new PyObject(op.StealOrThrow());

}

/// <summary>

/// Returns the named attribute of the Python object, or the given

/// default object if the attribute access throws AttributeError.

/// </summary>

/// <remarks>

/// This method ignores any AttrubiteError(s), even ones

/// not raised due to missing requested attribute.

///

/// For example, if attribute getter calls other Python code, and

/// that code happens to cause AttributeError elsewhere, it will be ignored

/// and <paramref name="_default"/> value will be returned instead.

/// </remarks>

/// <param name="name">Name of the attribute. Must be of Python type 'str'.</param>

/// <param name="_default">The object to return on AttributeError.</param>

[Obsolete("See remarks")]

public PyObject GetAttr(PyObject name, PyObject _default)

{

if (name == null) throw new ArgumentNullException(nameof(name));

using var op = Runtime.PyObject_GetAttr(obj, name.obj);

if (op.IsNull())

{

if (Exceptions.ExceptionMatches(Exceptions.AttributeError))

{

Runtime.PyErr_Clear();

return _default;

}

else

{

throw PythonException.ThrowLastAsClrException();

}

return new PyObject(op.Steal());

}

/// <summary>

/// SetAttr Method

/// </summary>

/// <remarks>

/// Set an attribute of the object with the given name and value. This

/// method throws a PythonException if the attribute set fails.

/// </remarks>

public void SetAttr(string name, PyObject value)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (value == null) throw new ArgumentNullException(nameof(value));

int r = Runtime.PyObject_SetAttrString(obj, name, value.obj);

if (r < 0)

{

throw PythonException.ThrowLastAsClrException();

}

/// <summary>

/// SetAttr Method

/// </summary>

/// <remarks>

/// Set an attribute of the object with the given name and value,

/// where the name is a Python string or unicode object. This method

/// throws a PythonException if the attribute set fails.

/// </remarks>

public void SetAttr(PyObject name, PyObject value)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (value == null) throw new ArgumentNullException(nameof(value));

int r = Runtime.PyObject_SetAttr(obj, name.obj, value.obj);

if (r < 0)

{

throw PythonException.ThrowLastAsClrException();

}

/// <summary>

/// DelAttr Method

/// </summary>

/// <remarks>

/// Delete the named attribute of the Python object. This method

/// throws a PythonException if the attribute set fails.

/// </remarks>

public void DelAttr(string name)

{

if (name == null) throw new ArgumentNullException(nameof(name));

int r = Runtime.PyObject_DelAttrString(obj, name);

if (r < 0)

{

throw PythonException.ThrowLastAsClrException();

}

/// <summary>

/// DelAttr Method

/// </summary>

/// <remarks>

/// Delete the named attribute of the Python object, where name is a

/// PyObject wrapping a Python string or unicode object. This method

/// throws a PythonException if the attribute set fails.

/// </remarks>

public void DelAttr(PyObject name)

{

if (name == null) throw new ArgumentNullException(nameof(name));

int r = Runtime.PyObject_DelAttr(obj, name.obj);

if (r < 0)

{

throw PythonException.ThrowLastAsClrException();

}

/// <summary>

/// GetItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// return the item at the given object index. This method raises a

/// PythonException if the indexing operation fails.

/// </remarks>

public virtual PyObject GetItem(PyObject key)

{

if (key == null) throw new ArgumentNullException(nameof(key));

using var op = Runtime.PyObject_GetItem(obj, key.obj);

if (op.IsNull())

{

throw PythonException.ThrowLastAsClrException();

}

return new PyObject(op.Steal());

}

/// <summary>

/// GetItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// return the item at the given string index. This method raises a

/// PythonException if the indexing operation fails.

/// </remarks>

public virtual PyObject GetItem(string key)

{

if (key == null) throw new ArgumentNullException(nameof(key));

using var pyKey = new PyString(key);

return GetItem(pyKey);

}

/// <summary>

/// GetItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// return the item at the given numeric index. This method raises a

/// PythonException if the indexing operation fails.

/// </remarks>

public virtual PyObject GetItem(int index)

{

using var key = new PyInt(index);

return GetItem(key);

}

/// <summary>

/// SetItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// set the item at the given object index to the given value. This

/// method raises a PythonException if the set operation fails.

/// </remarks>

public virtual void SetItem(PyObject key, PyObject value)

{

if (key == null) throw new ArgumentNullException(nameof(key));

if (value == null) throw new ArgumentNullException(nameof(value));

int r = Runtime.PyObject_SetItem(obj, key.obj, value.obj);

if (r < 0)

{

throw PythonException.ThrowLastAsClrException();

}

/// <summary>

/// SetItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// set the item at the given string index to the given value. This

/// method raises a PythonException if the set operation fails.

/// </remarks>

public virtual void SetItem(string key, PyObject value)

{

if (key == null) throw new ArgumentNullException(nameof(key));

if (value == null) throw new ArgumentNullException(nameof(value));

using var pyKey = new PyString(key);

SetItem(pyKey, value);

}

/// <summary>

/// SetItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// set the item at the given numeric index to the given value. This

/// method raises a PythonException if the set operation fails.

/// </remarks>

public virtual void SetItem(int index, PyObject value)

{

if (value == null) throw new ArgumentNullException(nameof(value));

using var pyindex = new PyInt(index);

SetItem(pyindex, value);

}

/// <summary>

/// DelItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// delete the item at the given object index. This method raises a

/// PythonException if the delete operation fails.

/// </remarks>

public virtual void DelItem(PyObject key)

{

if (key == null) throw new ArgumentNullException(nameof(key));

int r = Runtime.PyObject_DelItem(obj, key.obj);

if (r < 0)

{

throw PythonException.ThrowLastAsClrException();

}

/// <summary>

/// DelItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// delete the item at the given string index. This method raises a

/// PythonException if the delete operation fails.

/// </remarks>

public virtual void DelItem(string key)

{

if (key == null) throw new ArgumentNullException(nameof(key));

using var pyKey = new PyString(key);

DelItem(pyKey);

}

/// <summary>

/// DelItem Method

/// </summary>

/// <remarks>

/// For objects that support the Python sequence or mapping protocols,

/// delete the item at the given numeric index. This method raises a

/// PythonException if the delete operation fails.

/// </remarks>

public virtual void DelItem(int index)

{

using var pyindex = new PyInt(index);

DelItem(pyindex);

}

/// <summary>

/// Returns the length for objects that support the Python sequence

/// protocol.

/// </summary>

public virtual long Length()

{

var s = Runtime.PyObject_Size(Reference);

if (s < 0)

{

throw PythonException.ThrowLastAsClrException();

}

return s;

}

/// <summary>

/// String Indexer

/// </summary>

/// <remarks>

/// Provides a shorthand for the string versions of the GetItem and

/// SetItem methods.

/// </remarks>

public virtual PyObject this[string key]

{

get { return GetItem(key); }

set { SetItem(key, value); }

}

/// <summary>

/// PyObject Indexer

/// </summary>

/// <remarks>

/// Provides a shorthand for the object versions of the GetItem and

/// SetItem methods.

/// </remarks>

public virtual PyObject this[PyObject key]

{

get { return GetItem(key); }

set { SetItem(key, value); }

}

/// <summary>

/// Numeric Indexer

/// </summary>

/// <remarks>

/// Provides a shorthand for the numeric versions of the GetItem and

/// SetItem methods.

/// </remarks>

public virtual PyObject this[int index]

{

get { return GetItem(index); }

set { SetItem(index, value); }

}

/// <summary>

/// Return a new (Python) iterator for the object. This is equivalent

/// to the Python expression "iter(object)".

/// </summary>

/// <exception cref="PythonException">Thrown if the object can not be iterated.</exception>

public PyIter GetIterator() => PyIter.GetIter(this);

/// <summary>

/// Invoke Method

/// </summary>

/// <remarks>

/// Invoke the callable object with the given arguments, passed as a

/// PyObject[]. A PythonException is raised if the invocation fails.

/// </remarks>

public PyObject Invoke(params PyObject[] args)

{

if (args == null) throw new ArgumentNullException(nameof(args));

if (args.Contains(null)) throw new ArgumentNullException();

var t = new PyTuple(args);

using var r = Runtime.PyObject_Call(obj, t.obj, null);

t.Dispose();

return new PyObject(r.StealOrThrow());

}

/// <summary>

/// Invoke Method

/// </summary>

/// <remarks>

/// Invoke the callable object with the given arguments, passed as a

/// Python tuple. A PythonException is raised if the invocation fails.

/// </remarks>

public PyObject Invoke(PyTuple args)

{

if (args == null) throw new ArgumentNullException(nameof(args));

using var r = Runtime.PyObject_Call(obj, args.obj, null);

return new PyObject(r.StealOrThrow());

}

/// <summary>

/// Invoke Method

/// </summary>

/// <remarks>

/// Invoke the callable object with the given positional and keyword

/// arguments. A PythonException is raised if the invocation fails.

/// </remarks>

public PyObject Invoke(PyObject[] args, PyDict? kw)

{

if (args == null) throw new ArgumentNullException(nameof(args));

if (args.Contains(null)) throw new ArgumentNullException();

using var t = new PyTuple(args);

using var r = Runtime.PyObject_Call(obj, t.obj, kw is null ? null : kw.obj);

return new PyObject(r.StealOrThrow());

}

/// <summary>

/// Invoke Method

/// </summary>

/// <remarks>

/// Invoke the callable object with the given positional and keyword

/// arguments. A PythonException is raised if the invocation fails.

/// </remarks>

public PyObject Invoke(PyTuple args, PyDict? kw)

{

if (args == null) throw new ArgumentNullException(nameof(args));

using var r = Runtime.PyObject_Call(obj, args.obj, kw is null ? null : kw.obj);

return new PyObject(r.StealOrThrow());

}

/// <summary>

/// InvokeMethod Method

/// </summary>

/// <remarks>

/// Invoke the named method of the object with the given arguments.

/// A PythonException is raised if the invocation is unsuccessful.

/// </remarks>

public PyObject InvokeMethod(string name, params PyObject[] args)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (args == null) throw new ArgumentNullException(nameof(args));

if (args.Contains(null)) throw new ArgumentNullException();

PyObject method = GetAttr(name);

PyObject result = method.Invoke(args);

method.Dispose();

return result;

}

/// <summary>

/// InvokeMethod Method

/// </summary>

/// <remarks>

/// Invoke the named method of the object with the given arguments.

/// A PythonException is raised if the invocation is unsuccessful.

/// </remarks>

public PyObject InvokeMethod(string name, PyTuple args)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (args == null) throw new ArgumentNullException(nameof(args));

PyObject method = GetAttr(name);

PyObject result = method.Invoke(args);

method.Dispose();

return result;

}

/// <summary>

/// InvokeMethod Method

/// </summary>

/// <remarks>

/// Invoke the named method of the object with the given arguments.

/// A PythonException is raised if the invocation is unsuccessful.

/// </remarks>

public PyObject InvokeMethod(PyObject name, params PyObject[] args)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (args == null) throw new ArgumentNullException(nameof(args));

if (args.Contains(null)) throw new ArgumentNullException();

PyObject method = GetAttr(name);

PyObject result = method.Invoke(args);

method.Dispose();

return result;

}

/// <summary>

/// InvokeMethod Method

/// </summary>

/// <remarks>

/// Invoke the named method of the object with the given arguments.

/// A PythonException is raised if the invocation is unsuccessful.

/// </remarks>

public PyObject InvokeMethod(PyObject name, PyTuple args)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (args == null) throw new ArgumentNullException(nameof(args));

PyObject method = GetAttr(name);

PyObject result = method.Invoke(args);

method.Dispose();

return result;

}

/// <summary>

/// InvokeMethod Method

/// </summary>

/// <remarks>

/// Invoke the named method of the object with the given arguments

/// and keyword arguments. Keyword args are passed as a PyDict object.

/// A PythonException is raised if the invocation is unsuccessful.

/// </remarks>

public PyObject InvokeMethod(string name, PyObject[] args, PyDict? kw)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (args == null) throw new ArgumentNullException(nameof(args));

if (args.Contains(null)) throw new ArgumentNullException();

PyObject method = GetAttr(name);

PyObject result = method.Invoke(args, kw);

method.Dispose();

return result;

}

/// <summary>

/// InvokeMethod Method

/// </summary>

/// <remarks>

/// Invoke the named method of the object with the given arguments

/// and keyword arguments. Keyword args are passed as a PyDict object.

/// A PythonException is raised if the invocation is unsuccessful.

/// </remarks>

public PyObject InvokeMethod(string name, PyTuple args, PyDict? kw)

{

if (name == null) throw new ArgumentNullException(nameof(name));

if (args == null) throw new ArgumentNullException(nameof(args));

PyObject method = GetAttr(name);

PyObject result = method.Invoke(args, kw);

method.Dispose();

return result;

}

/// <summary>

/// IsInstance Method

/// </summary>

/// <remarks>

/// Return true if the object is an instance of the given Python type

/// or class. This method always succeeds.

/// </remarks>

public bool IsInstance(PyObject typeOrClass)

{

if (typeOrClass == null) throw new ArgumentNullException(nameof(typeOrClass));

int r = Runtime.PyObject_IsInstance(obj, typeOrClass.obj);

if (r < 0)

{

Runtime.PyErr_Clear();

return false;

}

return r != 0;

}

/// <summary>

/// Return <c>true</c> if the object is identical to or derived from the

/// given Python type or class. This method always succeeds.

/// </summary>

public bool IsSubclass(PyObject typeOrClass)

{

if (typeOrClass == null) throw new ArgumentNullException(nameof(typeOrClass));

return IsSubclass(typeOrClass.Reference);

}

internal bool IsSubclass(BorrowedReference typeOrClass)

{

if (typeOrClass.IsNull) throw new ArgumentNullException(nameof(typeOrClass));

int r = Runtime.PyObject_IsSubclass(Reference, typeOrClass);

if (r < 0)

{

Runtime.PyErr_Clear();

return false;

}

return r != 0;

}

/// <summary>

/// IsCallable Method

/// </summary>

/// <remarks>

/// Returns true if the object is a callable object. This method

/// always succeeds.

/// </remarks>

public bool IsCallable()

{

return Runtime.PyCallable_Check(obj) != 0;

}

/// <summary>

/// IsIterable Method

/// </summary>

/// <remarks>

/// Returns true if the object is iterable object. This method

View remainder of file in raw view

pythonnet/src/runtime/PythonTypes/PyObject.cs at master · macaronikazoo/pythonnet · GitHub

Repository navigation

Expand file tree

Breadcrumbs

PyObject.cs

Latest commit

History

Breadcrumbs

PyObject.cs

File metadata and controls