1e79934acf
Instead of hardcoding the environment's global object as the return value of GlobalEnvironment::global_this_value(), it now stores an Object reference which is passed to the constructor for this purpose. From the spec (https://tc39.es/ecma262/#sec-global-environment-records): [[GlobalThisValue]] | Object | The value returned by this in global scope. Hosts may provide any ECMAScript Object value.
58 lines
2.6 KiB
C++
58 lines
2.6 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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GlobalEnvironment(GlobalObject&, Object& this_value);
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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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ObjectEnvironment& object_record() { return *m_object_record; }
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Object& global_this_value() { return *m_global_this_value; }
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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 }; // [[ObjectRecord]]
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Object* m_global_this_value { nullptr }; // [[GlobalThisValue]]
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DeclarativeEnvironment* m_declarative_record { nullptr }; // [[DeclarativeRecord]]
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Vector<FlyString> m_var_names; // [[VarNames]]
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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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