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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:
GlobalEnvironment(GlobalObject&, Object& this_value);
virtual bool has_this_binding() const final { return true; }
virtual ThrowCompletionOr<Value> get_this_binding(GlobalObject&) const final;
virtual ThrowCompletionOr<bool> has_binding(FlyString const& name, Optional<size_t>* = nullptr) const override;
virtual ThrowCompletionOr<void> create_mutable_binding(GlobalObject&, FlyString const& name, bool can_be_deleted) override;
virtual ThrowCompletionOr<void> create_immutable_binding(GlobalObject&, FlyString const& name, bool strict) override;
virtual ThrowCompletionOr<void> initialize_binding(GlobalObject&, FlyString const& name, Value) override;
virtual ThrowCompletionOr<void> set_mutable_binding(GlobalObject&, FlyString const& name, Value, bool strict) override;
virtual ThrowCompletionOr<Value> get_binding_value(GlobalObject&, FlyString const& name, bool strict) override;
virtual ThrowCompletionOr<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;
ThrowCompletionOr<bool> has_restricted_global_property(FlyString const& name) const;
ThrowCompletionOr<bool> can_declare_global_var(FlyString const& name) const;
ThrowCompletionOr<bool> can_declare_global_function(FlyString const& name) const;
ThrowCompletionOr<void> create_global_var_binding(FlyString const& name, bool can_be_deleted);
ThrowCompletionOr<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(); }
}
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