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LibJS: Mark classes and virtual functions final where possible

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These cases were found with GCC's `-Wsuggest-final-{types,methods}`
warnings, which catch calls that could have been devirtualized had we
declared the functions `final` in the source.

To reproduce, Link Time Optimization needs to be enabled. The easiest
way to achieve this is to set the `CMAKE_INTERPROCEDURAL_OPTIMIZATION`
cache variable to `ON`. The `.incbin` directive in LibCompress' Brotli
decompressor might needs to be changed to an absolute path for this to
work.

This commit also removes a pair of unused virtual functions.
This commit is contained in:
Daniel Bertalan 2023-08-13 12:53:46 +02:00 • committed by Andreas Kling
parent 72c9f56c66
commit 65232b6681
9 changed files with 17 additions and 20 deletions
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10
Userland/Libraries/LibJS/Runtime/DeclarativeEnvironment.h
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@ -32,11 +32,11 @@ public:
virtual ~DeclarativeEnvironment() override = default;
virtual ThrowCompletionOr<bool> has_binding(DeprecatedFlyString const& name, Optional<size_t>* = nullptr) const override;
virtual ThrowCompletionOr<void> create_mutable_binding(VM&, DeprecatedFlyString const& name, bool can_be_deleted) override;
virtual ThrowCompletionOr<void> create_immutable_binding(VM&, DeprecatedFlyString const& name, bool strict) override;
virtual ThrowCompletionOr<void> initialize_binding(VM&, DeprecatedFlyString const& name, Value, InitializeBindingHint) override;
virtual ThrowCompletionOr<void> set_mutable_binding(VM&, DeprecatedFlyString const& name, Value, bool strict) override;
virtual ThrowCompletionOr<bool> has_binding(DeprecatedFlyString const& name, Optional<size_t>* = nullptr) const override final;
virtual ThrowCompletionOr<void> create_mutable_binding(VM&, DeprecatedFlyString const& name, bool can_be_deleted) override final;
virtual ThrowCompletionOr<void> create_immutable_binding(VM&, DeprecatedFlyString const& name, bool strict) override final;
virtual ThrowCompletionOr<void> initialize_binding(VM&, DeprecatedFlyString const& name, Value, InitializeBindingHint) override final;
virtual ThrowCompletionOr<void> set_mutable_binding(VM&, DeprecatedFlyString const& name, Value, bool strict) override final;
virtual ThrowCompletionOr<Value> get_binding_value(VM&, DeprecatedFlyString const& name, bool strict) override;
virtual ThrowCompletionOr<bool> delete_binding(VM&, DeprecatedFlyString const& name) override;