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/*
* 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:
explicit GlobalEnvironment(GlobalObject&);
virtual Optional<Variable> get_from_environment(FlyString const&) const override;
virtual bool put_into_environment(FlyString const&, Variable) override;
virtual bool delete_from_environment(FlyString const&) override;
virtual bool has_this_binding() const final { return true; }
virtual Value get_this_binding(GlobalObject&) const final;
virtual bool has_binding(FlyString const& name) 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;
Value global_this_value() const;
// [[ObjectRecord]]
ObjectEnvironment& object_record() { return *m_object_record; }
// [[DeclarativeRecord]]
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 };
DeclarativeEnvironment* m_declarative_record { nullptr };
Vector<FlyString> m_var_names;
};
template<>
inline bool Environment::fast_is<GlobalEnvironment>() const { return is_global_environment(); }
}
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