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56 lines
2.8 KiB
C++
56 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <andreas@ladybird.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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JS_DECLARE_ALLOCATOR(GlobalEnvironment);
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public:
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virtual bool has_this_binding() const final { return true; }
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virtual ThrowCompletionOr<Value> get_this_binding(VM&) const final;
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virtual ThrowCompletionOr<bool> has_binding(DeprecatedFlyString const& name, Optional<size_t>* = nullptr) const override;
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virtual ThrowCompletionOr<void> create_mutable_binding(VM&, DeprecatedFlyString const& name, bool can_be_deleted) override;
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virtual ThrowCompletionOr<void> create_immutable_binding(VM&, DeprecatedFlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<void> initialize_binding(VM&, DeprecatedFlyString const& name, Value, Environment::InitializeBindingHint) override;
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virtual ThrowCompletionOr<void> set_mutable_binding(VM&, DeprecatedFlyString const& name, Value, bool strict) override;
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virtual ThrowCompletionOr<Value> get_binding_value(VM&, DeprecatedFlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<bool> delete_binding(VM&, DeprecatedFlyString 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(DeprecatedFlyString const& name) const;
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bool has_lexical_declaration(DeprecatedFlyString const& name) const;
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ThrowCompletionOr<bool> has_restricted_global_property(DeprecatedFlyString const& name) const;
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ThrowCompletionOr<bool> can_declare_global_var(DeprecatedFlyString const& name) const;
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ThrowCompletionOr<bool> can_declare_global_function(DeprecatedFlyString const& name) const;
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ThrowCompletionOr<void> create_global_var_binding(DeprecatedFlyString const& name, bool can_be_deleted);
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ThrowCompletionOr<void> create_global_function_binding(DeprecatedFlyString const& name, Value, bool can_be_deleted);
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private:
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GlobalEnvironment(Object&, Object& this_value);
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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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GCPtr<ObjectEnvironment> m_object_record; // [[ObjectRecord]]
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GCPtr<Object> m_global_this_value; // [[GlobalThisValue]]
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GCPtr<DeclarativeEnvironment> m_declarative_record; // [[DeclarativeRecord]]
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Vector<DeprecatedFlyString> 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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