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Serenity Operating System
1/*
2 * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/Function.h>
28#include <LibJS/Heap/Heap.h>
29#include <LibJS/Interpreter.h>
30#include <LibJS/Runtime/Array.h>
31#include <LibJS/Runtime/ObjectConstructor.h>
32#include <LibJS/Runtime/Shape.h>
33
34namespace JS {
35
36ObjectConstructor::ObjectConstructor()
37{
38 put("prototype", interpreter().object_prototype());
39
40 put_native_function("getOwnPropertyNames", get_own_property_names, 1);
41 put_native_function("getPrototypeOf", get_prototype_of, 1);
42 put_native_function("setPrototypeOf", set_prototype_of, 2);
43}
44
45ObjectConstructor::~ObjectConstructor()
46{
47}
48
49Value ObjectConstructor::call(Interpreter& interpreter)
50{
51 return interpreter.heap().allocate<Object>();
52}
53
54Value ObjectConstructor::construct(Interpreter& interpreter)
55{
56 return call(interpreter);
57}
58
59Value ObjectConstructor::get_own_property_names(Interpreter& interpreter)
60{
61 if (!interpreter.argument_count())
62 return {};
63 auto* object = interpreter.argument(0).to_object(interpreter.heap());
64 if (interpreter.exception())
65 return {};
66 auto* result = interpreter.heap().allocate<Array>();
67 for (size_t i = 0; i < object->elements().size(); ++i) {
68 if (!object->elements()[i].is_empty())
69 result->push(js_string(interpreter, String::number(i)));
70 }
71
72 for (auto& it : object->shape().property_table())
73 result->push(js_string(interpreter, it.key));
74 return result;
75}
76
77Value ObjectConstructor::get_prototype_of(Interpreter& interpreter)
78{
79 if (!interpreter.argument_count())
80 return {};
81 auto* object = interpreter.argument(0).to_object(interpreter.heap());
82 if (interpreter.exception())
83 return {};
84 return object->prototype();
85}
86
87Value ObjectConstructor::set_prototype_of(Interpreter& interpreter)
88{
89 if (interpreter.argument_count() < 2)
90 return {};
91 if (!interpreter.argument(0).is_object())
92 return {};
93 auto* object = interpreter.argument(0).to_object(interpreter.heap());
94 if (interpreter.exception())
95 return {};
96 object->set_prototype(&const_cast<Object&>(interpreter.argument(1).as_object()));
97 return {};
98}
99
100}