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/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <AK/HashMap.h>
#include <LibJS/Runtime/Environment.h>
#include <LibJS/Runtime/Value.h>
namespace JS {
class DeclarativeEnvironment : public Environment {
JS_ENVIRONMENT(DeclarativeEnvironment, Environment);
public:
DeclarativeEnvironment();
explicit DeclarativeEnvironment(Environment* parent_scope);
DeclarativeEnvironment(HashMap<FlyString, Variable> variables, Environment* parent_scope);
virtual ~DeclarativeEnvironment() override;
// ^Environment
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;
HashMap<FlyString, Variable> const& variables() const { return m_variables; }
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;
protected:
virtual void visit_edges(Visitor&) override;
private:
virtual bool is_declarative_environment() const override { return true; }
HashMap<FlyString, Variable> m_variables;
struct Binding {
Value value;
bool strict { false };
bool mutable_ { false };
bool can_be_deleted { false };
bool initialized { false };
};
HashMap<FlyString, Binding> m_bindings;
};
template<>
inline bool Environment::fast_is<DeclarativeEnvironment>() const { return is_declarative_environment(); }
}
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