jcs.org
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/Interpreter.h>
29#include <LibJS/Runtime/Array.h>
30#include <LibJS/Runtime/Error.h>
31
32namespace JS {
33
34Array::Array()
35{
36 set_prototype(interpreter().array_prototype());
37 put_native_property("length", length_getter, length_setter);
38}
39
40Array::~Array()
41{
42}
43
44Value Array::shift()
45{
46 if (elements().size() == 0)
47 return js_undefined();
48 return Value(elements().take_first());
49}
50
51Value Array::pop()
52{
53 if (elements().size() == 0)
54 return js_undefined();
55 return Value(elements().take_last());
56}
57
58void Array::push(Value value)
59{
60 elements().append(value);
61}
62
63Value Array::length_getter(Interpreter& interpreter)
64{
65 auto* this_object = interpreter.this_value().to_object(interpreter.heap());
66 if (!this_object)
67 return {};
68 if (!this_object->is_array())
69 return interpreter.throw_exception<Error>("TypeError", "Not an array");
70 return Value(static_cast<const Array*>(this_object)->length());
71}
72
73void Array::length_setter(Interpreter&, Value)
74{
75 ASSERT_NOT_REACHED();
76}
77
78}