Method arrayproto_map

builtin_array.go:780–813

(call FunctionCall)

}

func (r *Runtime) arrayproto_map(call FunctionCall) Value {
	o := call.This.ToObject(r)
	length := toLength(o.self.getStr("length", nil))
	callbackFn := r.toCallable(call.Argument(0))
	fc := FunctionCall{
		This:      call.Argument(1),
		Arguments: []Value{nil, nil, o},
	}
	a := arraySpeciesCreate(o, length)
	if _, stdSrc := o.self.(*arrayObject); stdSrc {
		if arr, ok := a.self.(*arrayObject); ok {
			values := make([]Value, length)
			for k := int64(0); k < length; k++ {
				idx := valueInt(k)
				if val := o.self.getIdx(idx, nil); val != nil {
					fc.Arguments[0] = val
					fc.Arguments[1] = idx
					values[k] = callbackFn(fc)
				}
			}
			setArrayValues(arr, values)
			return a
		}
	}
	for k := int64(0); k < length; k++ {
		idx := valueInt(k)
		if val := o.self.getIdx(idx, nil); val != nil {
			fc.Arguments[0] = val
			fc.Arguments[1] = idx
			createDataPropertyOrThrow(a, idx, callbackFn(fc))
		}
	}
	return a
}

func (r *Runtime) arrayproto_filter(call FunctionCall) Value {
	o := call.This.ToObject(r)