mirror of
https://github.com/RGBCube/serenity
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64 lines
2.4 KiB
C++
64 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/HashMap.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/Environment.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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class DeclarativeEnvironment : public Environment {
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JS_ENVIRONMENT(DeclarativeEnvironment, Environment);
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public:
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DeclarativeEnvironment();
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explicit DeclarativeEnvironment(Environment* parent_scope);
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virtual ~DeclarativeEnvironment() override;
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virtual ThrowCompletionOr<bool> has_binding(FlyString const& name, Optional<size_t>* = nullptr) const override;
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virtual ThrowCompletionOr<void> create_mutable_binding(GlobalObject&, FlyString const& name, bool can_be_deleted) override;
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virtual ThrowCompletionOr<void> create_immutable_binding(GlobalObject&, FlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<void> initialize_binding(GlobalObject&, FlyString const& name, Value) override;
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virtual ThrowCompletionOr<void> set_mutable_binding(GlobalObject&, FlyString const& name, Value, bool strict) override;
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virtual ThrowCompletionOr<Value> get_binding_value(GlobalObject&, FlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<bool> delete_binding(GlobalObject&, FlyString const& name) override;
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void initialize_or_set_mutable_binding(Badge<ScopeNode>, GlobalObject& global_object, FlyString const& name, Value value);
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// This is not a method defined in the spec! Do not use this in any LibJS (or other spec related) code.
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[[nodiscard]] Vector<String> bindings() const;
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ThrowCompletionOr<Value> get_binding_value_direct(GlobalObject&, size_t index, bool strict);
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ThrowCompletionOr<void> set_mutable_binding_direct(GlobalObject&, size_t index, Value, bool strict);
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protected:
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virtual void visit_edges(Visitor&) override;
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private:
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FlyString const& name_from_index(size_t) const;
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virtual bool is_declarative_environment() const override { return true; }
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struct Binding {
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Value value;
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bool strict { false };
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bool mutable_ { false };
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bool can_be_deleted { false };
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bool initialized { false };
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};
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HashMap<FlyString, size_t> m_names;
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Vector<Binding> m_bindings;
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};
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template<>
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inline bool Environment::fast_is<DeclarativeEnvironment>() const { return is_declarative_environment(); }
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}
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