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
|
/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Runtime/Environment.h>
namespace JS {
class GlobalEnvironment final : public Environment {
JS_ENVIRONMENT(GlobalEnvironment, Environment);
public:
GlobalEnvironment(GlobalObject&, Object& this_value);
virtual bool has_this_binding() const final { return true; }
virtual Value get_this_binding(GlobalObject&) const final;
virtual bool has_binding(FlyString const& name, Optional<size_t>* = nullptr) const override;
virtual void create_mutable_binding(GlobalObject&, FlyString const& name, bool can_be_deleted) override;
virtual void create_immutable_binding(GlobalObject&, FlyString const& name, bool strict) override;
virtual void initialize_binding(GlobalObject&, FlyString const& name, Value) override;
virtual void set_mutable_binding(GlobalObject&, FlyString const& name, Value, bool strict) override;
virtual Value get_binding_value(GlobalObject&, FlyString const& name, bool strict) override;
virtual bool delete_binding(GlobalObject&, FlyString const& name) override;
ObjectEnvironment& object_record() { return *m_object_record; }
Object& global_this_value() { return *m_global_this_value; }
DeclarativeEnvironment& declarative_record() { return *m_declarative_record; }
bool has_var_declaration(FlyString const& name) const;
bool has_lexical_declaration(FlyString const& name) const;
bool has_restricted_global_property(FlyString const& name) const;
bool can_declare_global_var(FlyString const& name) const;
bool can_declare_global_function(FlyString const& name) const;
void create_global_var_binding(FlyString const& name, bool can_be_deleted);
void create_global_function_binding(FlyString const& name, Value, bool can_be_deleted);
private:
virtual bool is_global_environment() const override { return true; }
virtual void visit_edges(Visitor&) override;
ObjectEnvironment* m_object_record { nullptr }; // [[ObjectRecord]]
Object* m_global_this_value { nullptr }; // [[GlobalThisValue]]
DeclarativeEnvironment* m_declarative_record { nullptr }; // [[DeclarativeRecord]]
Vector<FlyString> m_var_names; // [[VarNames]]
};
template<>
inline bool Environment::fast_is<GlobalEnvironment>() const { return is_global_environment(); }
}
|
