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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/LogStream.h>
28#include <AK/String.h>
29#include <LibJS/Heap/Heap.h>
30#include <LibJS/Interpreter.h>
31#include <LibJS/Runtime/ArrayConstructor.h>
32#include <LibJS/Runtime/BooleanConstructor.h>
33#include <LibJS/Runtime/ConsoleObject.h>
34#include <LibJS/Runtime/DateConstructor.h>
35#include <LibJS/Runtime/ErrorConstructor.h>
36#include <LibJS/Runtime/FunctionConstructor.h>
37#include <LibJS/Runtime/GlobalObject.h>
38#include <LibJS/Runtime/MathObject.h>
39#include <LibJS/Runtime/NativeFunction.h>
40#include <LibJS/Runtime/NumberConstructor.h>
41#include <LibJS/Runtime/ObjectConstructor.h>
42#include <LibJS/Runtime/Value.h>
43
44namespace JS {
45
46template<typename ConstructorType>
47void GlobalObject::add_constructor(const FlyString& property_name, ConstructorType*& constructor, Object& prototype)
48{
49 constructor = heap().allocate<ConstructorType>();
50 prototype.put("constructor", constructor);
51 put(property_name, constructor);
52}
53
54GlobalObject::GlobalObject()
55{
56 put_native_function("gc", gc);
57 put_native_function("isNaN", is_nan, 1);
58
59 // FIXME: These are read-only in ES5
60 put("NaN", js_nan());
61 put("Infinity", js_infinity());
62 put("undefined", js_undefined());
63
64 put("globalThis", this);
65 put("console", heap().allocate<ConsoleObject>());
66 put("Math", heap().allocate<MathObject>());
67
68 add_constructor("Array", m_array_constructor, *interpreter().array_prototype());
69 add_constructor("Boolean", m_boolean_constructor, *interpreter().boolean_prototype());
70 add_constructor("Date", m_date_constructor, *interpreter().date_prototype());
71 add_constructor("Error", m_error_constructor, *interpreter().error_prototype());
72 add_constructor("Function", m_function_constructor, *interpreter().function_prototype());
73 add_constructor("Number", m_number_constructor, *interpreter().number_prototype());
74 add_constructor("Object", m_object_constructor, *interpreter().object_prototype());
75}
76
77GlobalObject::~GlobalObject()
78{
79}
80
81void GlobalObject::visit_children(Visitor& visitor)
82{
83 Object::visit_children(visitor);
84
85 visitor.visit(m_array_constructor);
86 visitor.visit(m_boolean_constructor);
87 visitor.visit(m_date_constructor);
88 visitor.visit(m_error_constructor);
89 visitor.visit(m_function_constructor);
90 visitor.visit(m_number_constructor);
91 visitor.visit(m_object_constructor);
92}
93
94Value GlobalObject::gc(Interpreter& interpreter)
95{
96 dbg() << "Forced garbage collection requested!";
97 interpreter.heap().collect_garbage();
98 return js_undefined();
99}
100
101Value GlobalObject::is_nan(Interpreter& interpreter)
102{
103 if (interpreter.argument_count() < 1)
104 return js_undefined();
105 return Value(interpreter.argument(0).to_number().is_nan());
106}
107
108}