80170887db
This code is non-conforming and will eventually get cleaned out once we implement proper variable bindings. However, this will aid us in improving other parts of the code right now.
61 lines
2.4 KiB
C++
61 lines
2.4 KiB
C++
/*
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* Copyright (c) 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 <LibJS/Runtime/Environment.h>
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namespace JS {
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class GlobalEnvironment final : public Environment {
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JS_ENVIRONMENT(GlobalEnvironment, Environment);
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public:
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explicit GlobalEnvironment(GlobalObject&);
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virtual Optional<Variable> get_from_environment(FlyString const&) const override;
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virtual bool put_into_environment(FlyString const&, Variable) override;
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virtual bool delete_from_environment(FlyString const&) override;
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virtual bool has_this_binding() const final { return true; }
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virtual Value get_this_binding(GlobalObject&) const final;
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virtual bool has_binding(FlyString const& name) const override;
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virtual void create_mutable_binding(GlobalObject&, FlyString const& name, bool can_be_deleted) override;
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virtual void create_immutable_binding(GlobalObject&, FlyString const& name, bool strict) override;
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virtual void initialize_binding(GlobalObject&, FlyString const& name, Value) override;
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virtual void set_mutable_binding(GlobalObject&, FlyString const& name, Value, bool strict) override;
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virtual Value get_binding_value(GlobalObject&, FlyString const& name, bool strict) override;
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virtual bool delete_binding(GlobalObject&, FlyString const& name) override;
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Value global_this_value() const;
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// [[ObjectRecord]]
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ObjectEnvironment& object_record() { return *m_object_record; }
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// [[DeclarativeRecord]]
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DeclarativeEnvironment& declarative_record() { return *m_declarative_record; }
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bool has_var_declaration(FlyString const& name) const;
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bool has_lexical_declaration(FlyString const& name) const;
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bool has_restricted_global_property(FlyString const& name) const;
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bool can_declare_global_var(FlyString const& name) const;
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bool can_declare_global_function(FlyString const& name) const;
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void create_global_var_binding(FlyString const& name, bool can_be_deleted);
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void create_global_function_binding(FlyString const& name, Value, bool can_be_deleted);
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private:
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virtual bool is_global_environment() const override { return true; }
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virtual void visit_edges(Visitor&) override;
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ObjectEnvironment* m_object_record { nullptr };
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DeclarativeEnvironment* m_declarative_record { nullptr };
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Vector<FlyString> m_var_names;
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};
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template<>
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inline bool Environment::fast_is<GlobalEnvironment>() const { return is_global_environment(); }
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}
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