mirror of
https://github.com/LadybirdBrowser/ladybird
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68fa684f76
Report outline storage retained by scripts, environments, module namespace objects, iterator helpers, property name iterators, argument objects, and error tracebacks. These objects keep vectors and maps that can grow independently from their GC cell sizes.
51 lines
2.0 KiB
C++
51 lines
2.0 KiB
C++
/*
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* Copyright (c) 2022, David Tuin <davidot@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/Module.h>
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#include <LibJS/Runtime/DeclarativeEnvironment.h>
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#include <LibJS/Runtime/Environment.h>
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namespace JS {
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// 9.1.1.5 Module Environment Records, https://tc39.es/ecma262/#sec-module-environment-records
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class JS_API ModuleEnvironment final : public DeclarativeEnvironment {
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JS_ENVIRONMENT(ModuleEnvironment, DeclarativeEnvironment);
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GC_DECLARE_ALLOCATOR(ModuleEnvironment);
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public:
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// Note: Module Environment Records support all of the declarative Environment Record methods listed
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// in Table 18 and share the same specifications for all of those methods except for
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// GetBindingValue, DeleteBinding, HasThisBinding and GetThisBinding.
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// In addition, module Environment Records support the methods listed in Table 24.
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virtual ThrowCompletionOr<Value> get_binding_value(VM&, Utf16FlyString const& name, bool strict) override;
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virtual ThrowCompletionOr<bool> delete_binding(VM&, Utf16FlyString const& name) override;
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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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ThrowCompletionOr<void> create_import_binding(Utf16FlyString name, Module* module, Utf16FlyString binding_name);
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private:
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explicit ModuleEnvironment(Environment* outer_environment);
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virtual void visit_edges(Visitor&) override;
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virtual size_t external_memory_size() const override;
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struct IndirectBinding {
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Utf16FlyString name;
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GC::Ptr<Module> module;
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Utf16FlyString binding_name;
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};
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IndirectBinding const* get_indirect_binding(Utf16FlyString const& name) const;
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virtual Optional<BindingAndIndex> find_binding_and_index(Utf16FlyString const& name) const override;
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// FIXME: Since we always access this via the name this could be a map.
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Vector<IndirectBinding> m_indirect_bindings;
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};
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}
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