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9ccc2f6c4d
Previously, EnvironmentRecord was a JS::Object. This was done because GlobalObject inherited from EnvironmentRecord. Now that this is no longer the case, we can simplify things by making EnvironmentRecord inherit from Cell directly. This also removes the need for environment records to have a shape, which was awkward. This will be removed in the following patch.
73 lines
2.7 KiB
C++
73 lines
2.7 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/EnvironmentRecord.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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struct Binding {
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Value value;
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bool strict;
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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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class DeclarativeEnvironmentRecord : public EnvironmentRecord {
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JS_ENVIRONMENT_RECORD(DeclarativeEnvironmentRecord, EnvironmentRecord);
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public:
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enum class EnvironmentRecordType {
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Declarative,
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Function,
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Object,
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Module,
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};
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DeclarativeEnvironmentRecord();
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DeclarativeEnvironmentRecord(EnvironmentRecordType);
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explicit DeclarativeEnvironmentRecord(EnvironmentRecord* parent_scope);
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DeclarativeEnvironmentRecord(HashMap<FlyString, Variable> variables, EnvironmentRecord* parent_scope);
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DeclarativeEnvironmentRecord(HashMap<FlyString, Variable> variables, EnvironmentRecord* parent_scope, EnvironmentRecordType);
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virtual ~DeclarativeEnvironmentRecord() override;
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// ^EnvironmentRecord
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virtual Optional<Variable> get_from_environment_record(FlyString const&) const override;
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virtual void put_into_environment_record(FlyString const&, Variable) override;
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virtual bool delete_from_environment_record(FlyString const&) override;
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HashMap<FlyString, Variable> const& variables() const { return m_variables; }
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EnvironmentRecordType type() const { return m_environment_record_type; }
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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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protected:
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virtual void visit_edges(Visitor&) override;
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private:
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virtual bool is_declarative_environment_record() const override { return true; }
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EnvironmentRecordType m_environment_record_type : 8 { EnvironmentRecordType::Declarative };
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HashMap<FlyString, Variable> m_variables;
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HashMap<FlyString, Binding> m_bindings;
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};
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template<>
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inline bool EnvironmentRecord::fast_is<DeclarativeEnvironmentRecord>() const { return is_declarative_environment_record(); }
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}
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