1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Function.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/ArrayPrototype.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
namespace JS {
Array* Array::create(GlobalObject& global_object)
{
return global_object.heap().allocate<Array>(global_object, *global_object.array_prototype());
}
Array::Array(Object& prototype)
: Object(prototype)
{
auto& vm = this->vm();
define_native_property(vm.names.length, length_getter, length_setter, Attribute::Writable);
}
Array::~Array()
{
}
Array* Array::typed_this(VM& vm, GlobalObject& global_object)
{
auto* this_object = vm.this_value(global_object).to_object(global_object);
if (!this_object)
return {};
if (!this_object->is_array()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAn, "Array");
return nullptr;
}
return static_cast<Array*>(this_object);
}
JS_DEFINE_NATIVE_GETTER(Array::length_getter)
{
auto* array = typed_this(vm, global_object);
if (!array)
return {};
return Value(static_cast<i32>(array->indexed_properties().array_like_size()));
}
JS_DEFINE_NATIVE_SETTER(Array::length_setter)
{
auto* array = typed_this(vm, global_object);
if (!array)
return;
auto length = value.to_number(global_object);
if (vm.exception())
return;
if (length.is_nan() || length.is_infinity() || length.as_double() < 0) {
vm.throw_exception<RangeError>(global_object, ErrorType::ArrayInvalidLength);
return;
}
array->indexed_properties().set_array_like_size(length.as_double());
}
}
|
