(args []Value, newTarget *Object)
| 347 | } |
| 348 | |
| 349 | func (f *classFuncObject) construct(args []Value, newTarget *Object) *Object { |
| 350 | if newTarget == nil { |
| 351 | newTarget = f.val |
| 352 | } |
| 353 | if f.prg == nil { |
| 354 | instance := f.createInstance(args, newTarget) |
| 355 | f._initFields(instance) |
| 356 | return instance |
| 357 | } else { |
| 358 | var instance *Object |
| 359 | var thisVal Value |
| 360 | if !f.derived { |
| 361 | instance = f.createInstance(args, newTarget) |
| 362 | f._initFields(instance) |
| 363 | thisVal = instance |
| 364 | } |
| 365 | ret := f._call(args, newTarget, thisVal) |
| 366 | |
| 367 | if ret, ok := ret.(*Object); ok { |
| 368 | return ret |
| 369 | } |
| 370 | if f.derived { |
| 371 | r := f.val.runtime |
| 372 | if ret != _undefined { |
| 373 | panic(r.NewTypeError("Derived constructors may only return object or undefined")) |
| 374 | } |
| 375 | if v := r.vm.stack[r.vm.sp+1]; v != nil { // using residual 'this' value (a bit hacky) |
| 376 | instance = r.toObject(v) |
| 377 | } else { |
| 378 | panic(r.newError(r.getReferenceError(), "Must call super constructor in derived class before returning from derived constructor")) |
| 379 | } |
| 380 | } |
| 381 | return instance |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | func (f *classFuncObject) assertConstructor() func(args []Value, newTarget *Object) *Object { |
| 386 | return f.construct |
no test coverage detected